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Water pollution prevention principles.The main problem of pollution from a simple principle: community is to reduce the amount of impurities contained in the waste water as well as waste disposal, water sources in the incinerator to exclude scraps that came from the container and rinse water in a waste water treatment system construction rarabai River into the canals. The criteria to make a community wastewater treatment system that is suitable for households, housing and small buildings with 3 categories are: 1. waste water treatment through water quality standards must be from building 2. should be treated with inexpensive and easy-to-maintain control. 3. is there a way to deal with what's left, and what that result from the treatment of sewage sludge. In addition to reducing waste water treatment methods are also another format is very popular in the community is the initial treatment and then leave it to absorb into the soil because it is cheap and simple system to maintain less than other systems, but there are limitations in the landscape is an area that is in, flood, watershed, including high-level ngaphuenthi is not suitable for this method.
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