Water treatment includes: sewage treatment and drinking water treatment. In some places, sewage treatment is further divided into two types:sewage treatment and water reuse. Commonly used water treatment agents are: polyaluminum chloride, polyaluminum ferric chloride, basic aluminum chloride, polyacrylamide, activated carbon and various filter materials, etc.
Sewage treatment (sewage treatment, wastewater treatment): The process of purifying sewage in order to make it meet the water quality requirements for discharge into a water body or for reuse. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical, catering and other fields
Commonly used sewage treatment technologies include biochemical methods, such as Activated Sludge Process, Fixed Biofilm Processes, Combined Biological Processes, etc.; physical and chemical methods, such as granular filtration method (Granular Media Filtration), Activated Carbon Adsorption, Chemical Precipitation, Membrane Processes, etc.; natural treatment methods, such as Stabilization Ponds, oxidation ditch Method (Aerated or Facultative Lagoons), Constructed Wetlands (Constructed Wetlands), Chemical Chromatography Resin Treatment Method. Separation Principle of Nanofiltration Membrane