Title: Exploring Sewage Treatment Methods: A Green Technology Treasure for Protecting the Water Environment.
In daily life, sewage discharge is an unavoidable phenomenon, which contains all kinds of organic matter, inorganic salts, microorganisms and harmful substances. How to effectively treat this sewage to protect the environment and ensure the quality of human life is a crucial issue. Here are a few common methods of sewage treatment:
1.Physical treatment method: separation of large particulate matter and suspended solids in sewage by sedimentation, screening, centrifugation, etc., such as grid interception and grit tank removal.
2.Biological treatment method: the use of activated sludge method, biofilm method, etc., with the help of aerobic or anaerobic microorganisms to degrade and transform organic pollutants, to achieve nitrogen, phosphorus and other nutrients and energy (such as biogas).
3.Chemical treatment method: add coagulant to aggregate the tiny particles in the sewage into larger flocs, and then separate them by sedimentation or air flotation technology; And through redox, neutralization, adsorption and other ways to eliminate toxic and harmful substances.
4.Physicochemical combination treatment such as ultrafiltration and reverse osmosis: for refractory organic matter and heavy metal ions, ultrafiltration and reverse osmosis technology can be used for deep purification.
In summary, the wastewater treatment process involves the synergistic application of multiple methods, aiming to minimize pollutant discharge, ensure the sustainable use of water resources, and promote the construction of ecological civilization. Therefore, understanding and mastering these sewage treatment technologies is of great practical significance for every citizen who cares about environmental protection and water resource security.