Waste water treatment methods that are well known both at home and abroad, Thai, it was a victory many turbine development, which I think is the only way is with a shape similar to the water turbine. 9 categories, this category is 9, and both called for more air or mechanical in English called the Aerator, which comes from the word which means the allow aerate air., which is one of the principles of operation of the machine is: Or oxygen into the water themselves.
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