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Physical waste water treatment method

　　The method of physical treatment of wastewater by a physical effect separation and removal of contaminants in suspension in water insoluble (including film, oil droplets) of. Process, the chemical nature of the contaminant does not change. Methods: ① gravity separation method, the processing unit precipitate, floating (flotation) and other processing equipment used in the sedimentation tanks, grit chambers, grease traps, flotation tank and its subsidiary devices. ② centrifugation, which itself is a processing unit, using a centrifugal separator equipment, rotating water separators and the like. ③ sieving method interception, interception and filtering have grizzly handled in two units, the former uses grille, screen, which uses sand filters, porous filter machines. In addition, waste water evaporation process method, gas-liquid exchange treatment of waste water, waste water treatment method of high gradient magnetic separation, adsorption process of wastewater and the like. Advantages physical treatment method: Most equipment is relatively simple, easy operation, good separation, it is very widely used.

Chemical treatment of wastewater

　　Chemical treatment of wastewater is isolated by a chemical reaction and mass transfer, removal of the wastewater was dissolved, colloidal contaminants or to convert it into harmless substances wastewater treatment method. In pharmaceutical dosing chemical reaction based processing unit has coagulation, neutralization, redox, etc; to mass transfer-based processing unit has extraction, stripping, stripping, adsorption, ion exchange, and electrical and wicking such as reverse osmosis. Waste water and treatment, wastewater coagulation treatment, chemical precipitation of wastewater treatment, wastewater oxidation treatment, extraction treatment of wastewater and the like. Compared with biological treatment, can more quickly and effectively remove more pollutants, measures can be used as tertiary treatment after biological treatment. This method also has the equipment is easy to operate, easy to implement automatic detection and control, ease of recycling and so on. Chemical treatment of waste water can effectively remove a variety of toxic and highly toxic pollutants.