Minggu, 25 November 2012

Explanation Text


1.  Explanation text about Religion

 

Ramadhan events

Islam's holiest month Ramadhan, is observed through many events. As Muslims must fast during the day during Ramadan, mosques will host iftar dinners after sunset and the fourth required prayer of the day, maghrib. Food is provided, at least in part, by members of the community, thereby creating nightly potluck dinners. Because of the community contribution necessary to serve iftar dinners, mosques with smaller congregations may not be able to host the iftar dinners daily. Some mosques will also hold suhoor meals before dawn to congregants attending the first required prayer of the day, fajr. As with iftar dinners, congregants usually provide the food for suhoor, although able mosques may provide food instead. Mosques will often invite poorer members of the Muslim community to share in beginning and breaking the fasts, as providing charity during Ramadan is regarded in Islam as especially honorable.
Following the last obligatory daily prayer (isha) special, optional tarawih prayers are offered in larger mosques. During each night of prayers, which can last for up to two hours each night, usually one member of the community who has memorized the entire Qur'an will recite a segment of the book. Sometimes, several such people (not necessarily of the local community) take turns to do this. During the last ten days of Ramadan, larger mosques will host all-night programs to observe Laylat al-Qadr, the night Muslims believe that Muhammad first received Qur'anic revelations. On that night, between sunset and sunrise, mosques employ speakers to educate congregants in attendance about Islam. Mosques or the community usually provide meals periodically throughout the night.
During the last ten days of Ramadan, larger mosques within the Muslim community will host i'tikaf, a practice in which at least one Muslim man from the community must participate. Muslims performing i'tikaf are required to stay within the mosque for ten consecutive days, often in worship or learning about Islam. As a result, the rest of the Muslim community is responsible for providing the participants with food, drinks, and whatever else they need during their stay.














2.    Explanation text about Social     

Suicide

The National Confidential Inquiry into Suicide and Homicide by People with Mental Illness, along with many other studies, reported that the majority of people who completed suicide were either unemployed or had a long-term illness (Department of Health, 1999). Compared with the general population, people who attempt suicide belong more often to the social categories associated with social destabilisation and poverty.
Gunnell et al(1995) examined the relations between suicide, parasuicide and socio-economic deprivation. A strong association was found between suicide and parasuicide, with socio-economic deprivation accounting for much of this relationship. Furthermore, homicide and suicide occur more frequently in highly populated, deprived areas (Kennedy et al, 1999). This finding is also supported by Crawford & Prince (1999), who noted increasing rates of suicide in young unemployed men living in conditions of extreme social deprivation. It is also true that the mortality rates of overdoses involving cocaine and opiates are significantly associated with poverty status (Marzuk et al, 1997).






























3. Explanation text about Economy

Monetary Policy
From the moment the financial crisis took hold in 2008, Fed Chairman Ben Bernanke has looked to lower the dollar’s value and cause asset prices to rise – especially in real estate. But his pitch has been wildly off the mark.
Real estate will be the last asset class to respond to the Fed’s dollar debasement strategy. Now, the Feds can’t control the ‘exact’ rate of inflation, nor can it direct where inflation will be distributed across the economy. In other words, inflation is like throwing a paper airplane: once you let it loose, you’re never really sure where it’s going to land. Rising prices is usually caused by an increase in the money supply or more commonly known as government money printing. And the recent increases in the prices of energy and other commodities are currently putting upward pressure on inflation”.  Simply put, Inflation is often defined, as “too much money chasing too few goods”.
As it right now, we are seeing rising prices everywhere except where Bernanke really wants them – real estate. Commercial and residential real estate is vacant. As housing sales fall – so will big bank balance sheets. That means we could be facing another credit collapse. Unless the Fed starts to create credit to buy houses directly off the market, and remove mandates and regulations, it will be very difficult to get real estate values to move higher.
Commercial real estate properties are hemorrhaging and in order to short-circuit major commercial defaults, what we might see is the government attempt to step-in with another TARP-like funds or TARP-leftover funds.
  • Housing is choked. Copper prices are in the toilet. Copper, is an indicator of new construction which means there is no new construction. Without an up tick in construction, the economy can’t really get much better
  • If people were working again, they would be gobbling up housing foreclosures. Some are over 50% off their high. No one is touching them.
  • Data released last week shows that the median price of existing homes declined 5.2% in February compared to the previous year. New home prices fared even worse; tumbling 9%!
  • 11% of homes nationwide are being left vacant, causing nearly 25% of mortgage holders to be without any equity in the home.
  • Bernanke and Obama have other problems, that is :
  • Manufacturing reports are a mixed bag. Heavy equipment is doing well but they have over seas markets to rely on in a US downturn. 30% of every refined barrel of oil is used directly (as an ingredient) or indirectly (provides machinery energy) in the manufacturing of products, as the price of oil goes up, so does the cost of manufacturing.
  • The American consumer, who makes up 70% of GDP, will be spending more and more disposable income they make on food and energy and necessities and less on luxury disposable income
  • Auto numbers are being skewed. Dealer inventories are up from 30 to 90 days. The auto industry, especially GM, is pushing 0% financing. That is a sure sign that you are not moving units; especially with spring in the air.
  • Economist uses bulk carload freight and transport indicators as one of the primary measures of economic activity. For the first eleven weeks of 2011, U.S. freight railroads originated an uptick of 5.3% from last year and trailers and containers were up 8.1% from the same point in 2010. That sounds like a nice gain — and it is — but to keep it in perspective, other than 2009 and 2010 it’s still the lowest March average since 1994. And, overall, intermodal traffic is the second slowest reading in over a year.
So,  by any reasonable account, Bernanke has failed. It is clear that by trying to channel his inflation into just one asset class, real estate, Bernanke has placed the entire US economy in severe danger.
He now faces a serious conundrum.
Does he raise interest rates significantly to fight inflation at the cost of a second housing market collapse, or does he sit idly by and watch the broader economy become just as unaffordable? Neither choice is pleasant, but one thing’s for sure: if the bond vigilantes start to raise interest rates for him, his paper airplane is headed for a crash.
Let me place this inflation discussion in more practical terms
Business operators believe that future prices for many goods and services will be higher next month than they are today. So, those companies and households with savings and capital that can afford to do so will buy the supplies they’ll need in the future today. This buying activity, which is driven by expectations of higher prices in the future, results in a transfer of future economic activity into the present. While some industries and companies enjoy pricing power, most do not. Those without pricing power will see weaker profit margins as higher raw material prices flow through the chain of production.
It’s the type of activity that Keynesian central bankers like Ben Bernanke want to encourage. But the transfer of future economic activity into the present hardly materializes and carries with it the same problems we saw during the housing and credit bubbles: when the “borrowed-against” future finally arrives, we see a collapse in demand for the pre-bought items. Pushing consumers and businesses to “buy now” with the expectation of higher prices in the future is hardly different from subsidizing the reckless growth in debt.
All this has lead to Bernanke’s quantitative easing experiments. Since last November, Bernanke has expanded the monetary base by over $325 billion and he’s not through. In all, it will be more than $600 Billion.
The result? We’ll see sugar rushes in economic activity, followed by hangovers. When the hangover sobriety settles in. The government prints more money. More sugar high.  His reckless monetary policy is driving down the dollar and driving up commodity prices. Central banks and the Obama government remain blind to the inflationary consequences of their policies. Based on his public comments, Bernanke seems to view rising energy and food prices as a deflationary shock to the US economy – which would, in his mind, necessitate even more money printing.
He sees no connection between the expansion of the Fed’s balance sheet and rising prices for everyday necessities. And, some fear that interest rates are being kept too low from the central bank.
The result will be stagflation.
Stagflation, in simple terms, can best be described as ‘elevated inflation and high unemployment’. Almost all the growth we have seen to date is from government orders. I’ve always been dubious of the inventory rebuild scenario. No one ever seems to have  solid numbers on it which makes it suspicious.








































4. Explanation text about Sains

Sprightly Explanation For UFO Sightings?

ScienceDaily (Feb. 24, 2009) — In legend, sprites are trolls, elves and other spirits that dance high above our ozone layer. But scientists at Tel Aviv University have discovered that some very real "sprites" are zipping across the atmosphere as well, providing a possible explanation for those other legendary denizens of the skies, UFOs.
Thunderstorms, says Prof. Colin Price, head of the Geophysics and Planetary Sciences Department at Tel Aviv University, are the catalyst for a newly discovered natural phenomenon he calls "sprites." He and his colleagues are one of the leading teams in the world studying the phenomenon, and Prof. Price leads the study of "winter sprites" ― those that appear only in the northern hemisphere's winter months.
"Sprites appear above most thunderstorms," explains Prof. Price, "but we didn't see them until recently. They are high in the sky and last for only a fraction of a second." While there is much debate over the cause or function of these mysterious flashes in the sky, they may, Prof. Price says, explain some bizarre reports of UFO sightings.














5. Explanation text about Politic

Political Corruption
Political corruption is the use of legislated powers by government officials for illegitimate private gain. Misuse of government power for other purposes, such as repression of political opponents and general police brutality, is not considered political corruption. Neither are illegal acts by private persons or corporations not directly involved with the government. An illegal act by an officeholder constitutes political corruption only if the act is directly related to their official duties.
Forms of corruption vary, but include bribery, extortion, cronyism, nepotism, patronage, graft, and embezzlement. While corruption may facilitate criminal enterprise such as drug trafficking, money laundering, and human trafficking, it is not restricted to these activities.
The activities that constitute illegal corruption differ depending on the country or jurisdiction. For instance, certain political funding practices that are legal in one place may be illegal in another. In some cases, government officials have broad or poorly defined powers, which make it difficult to distinguish between legal and illegal actions. Worldwide, bribery alone is estimated to involve over 1 trillion US dollars annually. A state of unrestrained political corruption is known as a kleptocracy, literally meaning "rule by thieves".
Source: http://en.wikipedia.org/wiki/Political_corruption#cite_note-0











6. Explanation text about Environment

The Effect of Global Warming
At the beginning year of 2000, the world got shock with the global warming issue. This issue, of course, makes many people all over the world panic, because the research of the experts of nature said that it was the beginning of apocalypse of the world. Their opinion is strengthened by the melting of eternal ice in South and North Pole. If it continues in a periods, it will make the level of sea volume increase. This condition is proven by the lost of small Indonesian islands each year. Even the research show that there are about 200 small Indonesian islands lost each year. We can imagine what will happen if global warming can not be stopped. Gradually, the sea water will dig many parts of earth. As a result, there is no living anymore. Besides drowning many parts of lands, this case will also make the temperature of sea water cool. This condition, according to the research, will be the beginnings of ice era, the same case like in the past that make so many creatures disappear, because of unfriendly nature, of course, people. The other effect of global warming is the irregular changes of seasons. Actually, this condition makes many people uncomfortable, the day can be so cool and so hot that cause the illness, such as, cold, fever, asthma, and so on. This effect, irregular changeover of seasons, also influences the agriculture activity, many rice fields get dry because the period of dry season is become longer. So rice cannot grow. In fact, rice is the main food of human being. However, in rainy seasons there are too many rain fall, flood, landslides, are a few example of the effect of too much rain fall. It also influences agriculture activity. Many farmers can not plant their commodity well. Finally, the food stock decreased and it is the classic problem that causes a hunger and it is possible to make the world dangerous with the apparent of war. Among countries battle each other to get their needs like in the past time. Can you imagine there is colonialism again? It is too hard too explain just because of global warming. Global warming is really dangerous, isn’t it?
However, there is still an opportunity to save our earth from global warming effects. All people, I am sure, can be the environmental emissary by plant trees, at least a tree for a person. Why? Because global warming is the result of green house affect that is produced by carbon dioxide emission gas. The function of tree, I mean, its leaves, is to produce oxygen and absorb CO2. Be a good pedestrian is the other way to reduce global warming effect or use public transportation. The last, of course, it has to start today, at the moment.






How Nuclear Waste Affects People and the Environment
Although the benefits of nuclear power seem to make it the obvious choice for the power source of the future, nuclear power can be danger for our environment. Our environment does not have any protections features to protect it from the harmful effects of nuclear waste.
Obviously, nuclear waste consists of Uranium broken down during the fission process that creates nuclear energy. During the fission process, anything has come in contact with the energy created becomes radioactive.
Mostly, nuclear waste it just dumped in low population areas all over the Earth with the population growing as fast as it is. Nuclear waste begins to destroy the environment we are trying so hard to protect.
Contaminated soil and groundwater do not have to be a problem. Increasing the risk of cancer, birds defects, and infertility are just a few of the harmful of nuclear waste. The effects of nuclear waste on the population aren’t only physical, they are mental.
If humans become exposed to nuclear waste, their cells may become damaged, and repair themselves incorrectly, resulting in biophysical damage that more often than not results in cancer. Different types of cancer than have resulted from radiation exposure from nuclear waste leukemia, breast, lung, liver and so on (Military Nuclear Mess).
Humans become exposed to nuclear waste radiation when nuclear waste is disposed of improperly. One example is when low-level waste that is not properly stored seeps through its containment area and comes in contact with groundwater. The same goes for the soil. In this manner however, plants become contaminated, and in turn the organisms that feed on them, including humans



















7. Explanation text about Culture

How Roman Roads were Built
The system of roads for mobility has been begun early decades. It was started since the Roman Empire conquered the world. The roads in Roman era were known as the best construction.
The Romans built roads are for the purpose of mobility, especially for the army. Having the best road, the army could march from one place to another. They built the roads as straight as possible, so that the army could take the shortest route.
It is interesting to know how the roads were built, which some of them are still in use today. First, the Romans builders would clear the ground of rocks and trees. Then they dug a trench where the road was to go and filled it with big stones. Next, they put in big stones, pebbles, cement and sand which they packed down to make a firm base. After that, they added another layer of cement mixed with broken tiles. On top of that rough construction, then they put paving stones to make the flat surface. These stones were cut so that they fitted together tightly. As the finishing touch, kerb stones were put at each sides of the road to hold in the paving stones. It was also used to make a channel for the water to run away.


Makalah kunjungan PT Sasa Inti Kecamatan Gending Kabupaten Probolinggo, jawa timur


BAB I
PENDAHULUAN
1.1 Latar Belakang
Indonesia merupakan negara kepulauan yang luas terbentang dari sabang sampai merauke. Selain itu Indonesia berada di daerah garis khatulistiwa. Hal ini menyebabkan Indonesia memiliki lahan pertanian yang subur. Mayoritas mata pencaharian penduduknya adalah petani. Tak heran, hampir semua kebutuhan sembako dapat terpenuhi, seperti halnya di daerah Probolinggo. Di daerah Probolinggo banyak lahan yang digunakan sebagai lahan pertanian dan tanaman yang ditanam juga bermacam-macam, seperti tebu, padi, jagung, bawang, dan sebagainya. Pertanian tebu sangat mudah ditemukan di daerah ini. Hasil dari pertanian tebu akan menghasilkan tetes tebu. Tetes tebu akan diangkut dan diolah oleh pabrik MSG( Monosodium Glutamate ) yang ada di daerah Probolinggo, yaitu PT Sasa Inti Gending.  Di pabrik ini hasil tetes tebunya diolah untuk dibuat bahan baku pembuatan MSG. Semua pabrik industri akan mengeluarkan hasil sampingan yang berbahaya jika tidak di netralisir, seperti limbah, terutamanya limbah cair.
Selama ini limbah terkenal karena baunya yang tidak sedap, khususnya dikalangan masyarakat di dekat area perindustrian. Jika limbah cair tidak diolah terlebih dahulu, limbah akan mencemari lingkungan, terutama di aliran sungai yang dijadikan sebagai pembuangan limbah cair oleh sebagian besar pabrik industri di Indonesia, tak terkecuali PT Sasa Inti. Limbah cair buangan PT Sasa Inti diproses terlebih dahulu sebelum dibuang dan dialirkan ke sungai. Tidak hanya itu, sebelum dibuang, kualitas pH air limbah cair diukur terlebih dahulu. Hal tersebut dilakukan dengan tujuan agar tidak membahayakan biota air sungai dan masyarakat  yang memanfaatkan air sungai untuk keperluan sehari-hari, seperti mencuci, mandi, buang air, dan sebagainya. Selain itu, air sungai juga dimanfaatkan untuk keperluan irigasi sawah masyarakat sekitar.
            Dalam makalah ini, kami akan membahas mengenai seputar limbah cair, terutama dalam hal pengukuran kualitas air limbah cair yang dikeluarkan oleh PT Sasa Inti Gending. Karena kualitas air limbah cair  yang dibuang ke sungai sangat berpengaruh bagi masyarakat yang tinggal di sekitar pabrik industri MSG tersebut.

1.2 Rumusan Masalah
1.      Bagaimana proses pengolahan limbah cair yang ada di PT Sasa Inti Gending?
2.      Berapa ukuran kualitas air limbah cair yang dikeluarkan oleh PT Sasa Inti Gending?
3.      Apa saja tujuan mengukur kualitas limbah cair?
4.      Apa akibatnya jika parameter pH  limbah cair tidak disesuaikan dengan standart parameter yang telah ditetapkan?

1.3 Tujuan
1.      Menjelaskan proses pengolahan limbah cair yang ada di PT Sasa Inti Gending.
2.      Mengetahui ukuran kualitas limbah cair yang dikeluarkan oleh PT Sasa Inti Gending.
3.      Mengetahui tujuan-tujuan mengukur kualitas limbah cair.
4.      Mengetahui akibat yang ditimbulkan jika parameter pH limbah cair tidak disesuaikan dengan standart parameter yang telah ditetapkan.

BAB II
KAJIAN PUSTAKA
2.1  Limbah
      Limbah adalah buangan yang dihasilkan dari suatu proses produksi baik industri maupun domestik (rumah tangga). Menurut UU No.23 Tahun 1997 tentang Pengelolaan Lingkungan Hidup, limbah adalah sisa suatu usaha dan/ atau kegiatan.Dimana masyarakat bermukim, disanalah berbagai jenis limbah akan dihasilkan. Ada sampah, ada air kakus (black water), dan ada air buangan dari berbagai aktivitas domestik lainnya (grey water).
Limbah padat lebih dikenal sebagai sampah, yang seringkali tidak dikehendaki kehadirannya karena tidak memiliki nilai ekonomis. Bila ditinjau secara kimiawi, limbah ini terdiri dari bahan kimia Senyawa organik dan Senyawa anorganik. Dengan konsentrasi dan kuantitas tertentu, kehadiran limbah dapat berdampak negatif terhadap lingkungan terutama bagi kesehatan manusia, sehingga perlu dilakukan penanganan terhadap limbah. Tingkat bahaya keracunan yang ditimbulkan oleh limbah tergantung pada jenis dan karakteristik limbah.
Berdasarkan karakteristiknya limbah industri dapat dibagi menjadi tiga bagian, yaitu:
  1. Limbah cair biasanya dikenal sebagai entitas pencemar air. Komponen pencemaran air pada umumnya terdiri dari bahan buangan padat, bahan buangan organik, dan bahan buangan anorganik.
  2. Limbah padat
  3. Limbah gas dan partikel

2.2 Parameter pH Limbah Cair
            Dalam pengolahan air limbah itu sendiri, terdapat beberapa parameter kualitas yang digunakan. Parameter kualitas air limbah dapat dikelompokkan menjadi tiga, yaitu parameter organik, karakteristik fisik, dan kontaminan spesifik. Parameter organik merupakan ukuran jumlah zat organik yang terdapat dalam limbah. Parameter ini terdiri dari total organic carbon (TOC), chemical oxygen demand (COD), biochemical oxygen demand (BOD), minyak dan lemak (O&G), dan total petrolum hydrocarbons (TPH). Karakteristik fisik dalam air limbah dapat dilihat dari parameter total suspended solids (TSS), pH, temperatur, warna, bau, dan potensial reduksi. Sedangkan kontaminan spesifik dalam air limbah dapat berupa senyawa organik atau inorganik.
Sumber: http://majarimagazine.com/2008/01/teknologi-pengolahan-air-limbah/
2.3 PT Sasa Inti Gending
PT SASA Inti Gending merupakan salah satu perusahaaan industri yang terkenal di Kabupaten Probolinggo, kecamatan Gending.  Perusahaan ini berdiri pada tahun 30 Agustus 1975. Perusahaan ini merupakan rintisan dari Perusahaan Gedangan yang terletak di Sidoarjo, namun perusahaan Gedangan ini telah ditutup karena terjebak lumpur lapindo, sekitar tahun 2004. Sehingga produksi semua di alihkan ke PT SASA Inti. Dahulu PT SASA Inti kekurangan karyawan, sedangkan produksi yang dituntut banyak, lebih dari kapasitas karyawan, sehingga semua orang yang berminat bisa menjadi karyawan PT SASA Inti. Akan tetapi kini karyawan PT SASA Inti semakin banyak, tidak imbang dengan produksi yang akan dihasilkan, seseorang yang berminat untuk bekerja di PT SASA Inti ini harus melewati beberapa ujian ( semacam test ) agar di terima menjadi karyawan PT SASA Inti. Setiap karyawan harus menghafal Visi dan Misi PT SASA Inti, supaya dapat di praktekkan dalam kehidupan sehari-hari khususnya pada saat bekerja, jika tidak menghafal perlu ditanyakan loyalitasnya. Karyawan PT SASA Inti masuk bekerja di bagi menadi beberpa Shift, yakni Shift malam, Shift siang, Shift sore, Shift pagi.
            Perusahaan ini memproduksi Vetsin ( penyedap rasa ) , setiap ibu rumah tangga tidak pernah lepas daribumbu penyedap rasa, karena setiap masakan membutuhkan bumbu itu supaya masakan lebih gurih dan sedap. Maka dari itu PT SASA Inti memproduksi Vetsin non stop yaitu selama 12 bulan, sehingga perusahaan ini menampung tetes tebu yang merupakan bahan dasar pembuatan Vetsin sebanyak 15000 ton tetes tebu. Karena PT SASA INTI ini lokasinya ddekat dengan pabrik gula maka PT SASA inti, mengambil tetes tebu dari, pabrik gula tsb. Karena pabrik gula itu giling dan menghasilkan tetes tebu setiap 6 bulan sekali, maka PT SASA Inti menampung tetes tebu sebanyak 15000 ton kedalam beberapa bak.  Hasil produksi di ekspor ke 5 benua namun sebagian besar di ekspor ke benua Eropa. Setiap benua kemasan yang di gunakan berbeda.
            Setiap perusahaan industri pasti menghasilkan limbah, tak terkecuali di PT SASA Inti ini, namun disini terdapat tempat pengolahan limbah yakni 13 bak pengolahan limbah, dan juga kolam limbah yang telah di olah dan terdapat ikan yang digunakan sebagai indikator air limbah, setelah itu limbah yang telah diolah dibuang di di sungai melalui pipa. Sehingga air tersebut tidak membahayakan kesehatan manusia yang menggunakan jasa air sungai serta tidak berbahaya bagi biota air.


BAB III
METODOLOGI KUNJUNGAN
Metode “berasal dari kata “Metode”yang artinya cara yang cepat untuk melakukan sesuatu; dan “logos” yang artinya ilmu dan pengetahuan. Jadi, metodologi artinya cara melakukan sesuatu dengan menggunakan pikiran secara seksama untuk mencapai suatu tujuan.sedangkan peneliyian adalah suatu kegiatan untuk mencari,mencatat,merumuskan,dan menganalisis sampai menyusun laporannya.
(Drs. Cholid Narbuko dan Drs Abu Achmadi,2008: 1)
3.1  Pemilihan Subjek
            Subjek yang diamati dalam kunjungan ini adalah limbah cair yang terdapat di PT Sasa Inti Gending. Limbah tersebut diolah dan dialirkan ke sungai.
3.2 Sumber Data
            Adapun data primer dalam kunjungan ini diperoleh dengan cara observasi ke lapangan (PT Sasa Inti Gending) yang dilakukan pada tanggal 17 Februari 2011. Sedangkan data sekunder diperoleh melalui internet dan berbagai sumber buku dan literatur.


BAB IV
PEMBAHASAN
4.1    Pengolahan Limbah Cair di PT.  SASA INTI
1.    Limbah cair ditampung di bak nomor 4 selama 2-3 jam untuk proses sedimentasi. Limbah cair tersebut berwarna bening karena limbah cair tersebut merupakan air hujan.
2.    Dari bak nomor 4 dialirkan ke bak nomor 3 dan ditampung selama 2-3 jam. Limbah cair tersebut berupa air aese.
3.    Dari bak nomor 3 dialirkan ke bak nomor 2 dan ditampung selama 2-3 jam.
4.    Dari bak nomor 2 dialirkan ke bak nomor 1 untuk memisahkan padatan yang ada di dalam limbah cair, kemudian dialirkan ke bak measuring weir.
5.    Dari bak measuring weir, limbah cair dialirkan ke bak air 1 dan 2 dan ditambah dengan mikroorganisme. Kemudian limbah cair tersebut diukur dengan alat DO untuk mengukur kadar oksigen yang larut dalam limbah cair tersebut. Selain itu, limbah cair tersebut juga diukur kadar pH-nya.
6.    Limbah cair tersebut kemudian dialirkan ke kolam ikan untuk mengetahui kualitas air limbah. Jika ikan yang ada di kolam tersebut tidak mati, maka limbah cair tersebut akan dibuang ke sungai.

4.2         Ukuran Kualitas Air Limbah Cair yang Dikeluarkan Oleh PT Sasa Inti Gending
Sebelum air limbah diuji kualitasnya dengan menampung air limbah ke dalam 13 bak, masing-masing bak diuji kualitas limbahnya dengan mengukurnya menggunakan pH meter, pH meter yang digunakan ada tiga jenis, yaitu BOD, COD, dan DO.
·      DO (Disolved Oksigen) =4-9 ppm
DO adalah oksigen terlarut yang terkandung di dalam air, berasal dari udara dan hasil proses fotosintesis tumbuhan air.  Pengukurannya dalam waktu 1 jam.
·      BOD (Biochemical Oxygent Demand) ≤ 10 ppm
BOD adalah jumlah oksigen yang digunakan dalam reaksi oksidasi oleh bakteri. Pemeriksaan BOD diperlukan untuk menentukan beban pencemaran akibat air buangan. Pengukurannya dalam waktu 5 hari.
·       COD (Chemical Oxygent Demand) ≤ 30 ppm
COD adalah jumlah oksigen  yang dibutuhkan untuk mengoksidasi zat-zat organik yang ada dalam 1 liter sampel air. Pengukurannya dalam waktu 2 jam.
Persamaan dari masing-masing pH meter tersebut adalah untuk mengukur oksigen terlarut dalam bak air limbah.
Parameter air limbah adalah pH 6-9. Jika pH air limbah mencapai parameter air limbah tersebut dan oksigen yang terlarut di dalam air limbah meningkat jumlahnya maka air limbah sudah siap untuk dialirkan ke sungai. Sebelum dialirkan ke sungai, air limbah ditmpung di kolam ikan. Jika ikan yang ada di kolam tersebut tidak mati, maka air llimbah tersebut baik untuk dialirkan ke sungai.
4.3         Tujuan Mengukur Kualitas Limbah Cair
Sebelum limbah cair dibuang/dialirkan ke sungai, limbah dialirkan ke IPAL (Instalasi Pengolahan Air Limbah), hal ini dilakukan untuk mengolah limbah dan diukur kualitasnya. IPAL ini tidak pernah berhenti proses , yakni selalu mengolah agar limbah tidak berlimpah. Sesuai dengan SK No.45 Tahun 2005, limbah harus memiliki parameter sebelum dibuang ke lingkungan. Tujuannya adalah agar air limbah yang dibuang ke sungai tidak membahayakan kesehatan manusia yang menggunakan jasa air sungai serta tidak membahayakan biota air yang hidup di air sungai, sehingga PT SASA Inti merupakan perusahaan yang bersih dan bebas dari pencemaran air.
4.4         Akibat yang Timbul Apabila Parameter pH Limbah Cair Tidak Disesuaikan
dengan  Standart yang Telah Ditetapakan
Akibat yang ditimbulkan apabila parameter air limbah tidak disesuaikan dengan standart yang ditetapkan antara lain :
1.      Pencemaran air
Limbah yang tidak diolah akan mencemari kualitas air sungai karena air sungai tidak dapat menyatu dengan air limbah.
2.      Merusak biota air
Pada dasarnya, limbah sangat berbahaya bagi biota air sungai karena limbah merupakan sisa hasil kegiatan industri yang belum dinetralisir, sehingga mengakibatkan kerusakan ekosistem biota air.
3.      Merusak drainase tanah
Limbah dapat terserap kedalam tanah sehingga merusak drainase tanah yang seharusnya seimbang.
4.      Mengurangi daya ikat air tanah
Daya ikat air sangat penting untuk area pertanian. Jika limbah mencemari tanah, limbah akan terserap oleh tanah, yang mana air tersebut seharusnya mengalir ke daerah pertanian. Karena limbah telah diserap oleh tanah maka daya ikat air akan berkurang. Jika daya ikat air berkurang maka kualitas pertanian juga akan berkurang.
5.      Penyakit ( untuk orang yang MCK di sungai )
Sebagian besar masyarakat sekitar memanfaatkan air sungai untuk melakukan kebutuhan sehari- hari, seperti mandi, cuci, dan tinja. Jika air sungai dicemari oleh air limbah yang tidak disesuaikan parameternya maka dapat menimbulkan penyakit.
6.      Menganggu estetika
Air sungai yang telah dicemari dapat mengganggu estetika, karena warna air sungai yang menyatu dengan air limbah berwarna cokelat kehitaman.
7.      Kualitas air bersih menurun
Apabila air sungai dicemari maka akan terjadi kelangkaan air bersih. Masyarakat sekitar yang kurang mampu dalam segi ekonominya akan memanfaatkan jasa air sungai, sehingga kualitas air bersih menurun.

BAB V
KESIMPULAN DAN SARAN
5.1 Kesimpulan
Setelah kami berkunjung ke PT SASA Inti dapat disimpulkan bahwa:
1.      Limbah cair yang dihasilkan oleh PT SASA Inti  diolah secara modern dengan beberapa tahap mulai dari ditampung di 13 bak secara berurutan, diberi bakteri, lalu ditampung di kolam limbah PT SASA Inti yang telah di beri ikan sebagai indikator, sehingga air limbah yang dibuang ke sungai aman untuk digunakan kebuuhan sehari-hari.
2.      Untuk mengukur kualitas air limbah di masing-masing bak diperlukan beberapa pHmeter. pHmeter yang digunakan di PT Sasa Inti Gending terdiri atas 3 jenis, yaitu DO (Disolved Oksigen),  BOD (Biochemical Oxygent Demand), dan COD (Chemical Oxygent Demand).
  1. Tujuan mengukur kualitas air limbah adalah agar limbah yang telah dibuang ke sungai tidak membahayakan kesehatan manusia yang menggunakan jasa air sungai, sehingga tidak menimbulkan berbagai penyakit. Serta tidak membayakan dan tidak merusak biota air sungai.
  2. Akibat-akibat yang ditimbulkan apabila parameter air limbah yang di buang ke sungai tidak sesuai dengan standart yang ditentukan yakni :
a)                            Pencemaran air
b)                            Merusak biota air
c)                            Merusak drainase tanah
d)                            Mengurangi daya ikat air tanah
e)                            Penyakit ( untuk orang yang MCK di sungai )
f)                             Menganggu estetika
g)                            Menurunnya kualitas air bersih

5.2 Saran
Dengan demikian, tidak semua limbah itu membahayakan dan dapat mencemari lingkungan atau bahkan membawa dampak buruk bagi lingkungan. Hal itu kembali pada diri kita sendiri, bagaimana cara mengolah limbah tersebut sehingga bermanfaat bahkan membawa nilai ekonomis bagi kita. Jadi, kita tidak perlu khawatir bahwa limbah akan mencemari lingkungan kita karena saat ini, beberapa perusahaan telah mengolah limbah terlebih dahulu sebelum dibuang ke lingkungan. Sebagai contohnya,  PT Sasa Inti Gending yang merupakan perusahaan yang mengolah limbah secara modern dan bertahap. Oleh karena itu, limbah yang dihasilkan tidak membawa dampak buruk bagi lingkungan, manusia, dan biota air. Sehingga PT Sasa Inti Gending  merupakan perusahaan yang bersih dan bebas dari pencemaran air.



DAFTAR PUSTAKA
Narbuko, Cholid., dan Achmad, Abu. 2008. Metodologi Penelitia. Jakarta: PT Bumi Aksara
http://majarimagazine.com/2008/01/teknologi-pengolahan-air-limbah/