Wastewater Treatment in Coconut Factories

A good way to protect Thailand Rivers.

By: Naipak Hatthapan

Forty five stingray deaths had been found in Mea Klong River, Samut Song Khram, on 12 October 2016 due to toxin from factories (ThaiPBS.  2016: Online). That gave me an idea to clean the river because Samut Song Khram is my hometown. The best way to do this is to starting with small coconut factories around my house.

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Two people are processing coconuts

In the village, people have set up small factories to buy coconut from villagers to process and sell to big companies. One coconut tree can make many products such as a coconut broom made from the leaf stalk, coconut sugar made from the flower, coconut milk made from the meat, etc. Many factories process only the meat and after that they will put all of meat into bucket and fill water and little of chemical to wash away dirtiness before putting it in a bag. Finally, they will drain the wastewater to the sewage into the canal. If they do that every day, someday the river will eventually be polluted.

The easiest way is “not to drain wastewater into the canal.” But where should they dump it? I search for several easy ways for wastewater treatment. I will make a handbook of wastewater treatment, give it to factory’s owner, talk with them, and show them how to do it.In the village, people have set up small factories to buy coconut from villagers to process and sell to big companies. One coconut tree can make many products such as a coconut broom made from the leaf stalk, coconut sugar made from the flower, coconut milk made from the meat, etc. Many factories process only the meat and after that they will put all of meat into bucket and fill water and little of chemical to wash away dirtiness before putting it in a bag. Finally, they will drain the wastewater to the sewage into the canal. If they do that every day, someday the river will eventually be polluted.

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Step of Wastewater Treatment

First, classify the waste. Second is Primary Treatment. Start with putting the water into large settlement tanks for the solids to sink to the bottom of the tank. The settled solids are called ‘sludge’. Then Secondary Treatment is called “Aeration Lane.” Air is pumped into the water to encourage bacteria to break down the tiny bits of sludge that escaped the sludge scrapping process. Final Treatment is passed through a settlement tank. Here, more sludge is formed at the bottom of the tank from the settling of the bacterial action. Again, the sludge is scraped and collected for treatment. The water at this stage is almost free from harmful substances and chemicals. The water is allowed to flow over a wall where it is filtered through a bed of sand to remove any additional particles (eschooltoday.  2016: online).

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Coconuts Factory near the canal.

 

People in the village are like a family because we will help each other. We use water in the same canal. They think it looks like small problem. Let’s do it before it’s too late. It is a mini campaign that I can do. I believe if we do it together, it will be better than I do it myself.

Tagline: naipak@hotmail.co.th

Reference:

http://eschooltoday.com/pollution/water-pollution/sewage-treatment-process-for-kids.html

http://siangtai.com/new/index6.php?name=hotnews-index&file=readnews&id=25689

http://www.bangkokpost.com/archive/alarm-over-dead-stingrays-in-mae-klong-river/1104828

http://englishnews.thaipbs.or.th/cause-mass-stingray-deaths-not-yet-established/

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