Waste water means water that contains any substance or contamination of impurities to make water changes to pages that are not recycled can be useful, and what is in the water, fat, oil, detergent, SOAP, insecticide. Any other source of waste water enough to split into 2 major source: waste water from a community source,Wastewater from industrial activities. The impact of sewage and foul smell. Cannot be used to consume, and consume a harmful organisms both in the water and affect the ecology and environment. And as a means of bringing diseases, etc.
การแปล กรุณารอสักครู่..