Sewage water reuse treatment equipment

Water reuse treatment technology mechanism can be divided according to their physical and chemical methods, biochemical methods and physicochemical and biochemical composition method. Typically reuse technology needs more rational combination of wastewater treatment technologies that combine various treatment methods depth treatment of sewage, it is because a single treatment method is generally difficult to achieve some kind of reuse water quality requirements. To the current, water reuse process are: biochemical method biochemical methods (referred to as biochemical) use of natural Cunsheng various microbes, decomposition of organic matter in the waste water into harmless substances, the waste water will be purified. Raw water → grid → regulating pool → contact oxidation pond → sedimentation → filtration → disinfection → ground water. Biochemical methods can be divided into activated sludge, biofilm, biological oxidation tower, land treatment system, anaerobic biological treatment methods. 1, activated sludge (1) aeration: the discharge flow aeration, compressed air is continuously bubbled into the wastewater, to ensure a certain degree of dissolved oxygen in the water to sustain microbial life activities, decompose organic matter in water, in order to purify the water effect. (2) mechanical aeration: the surface aerators, the use of mechanical aeration tanks mounted rotating impeller, churning the water, in the air of oxygen dissolved in water for microbial life activities, and biochemical effects in order to purify the sewage effect. (3) Pure Oxygen Aeration: aeration method It is based on pure oxygen is blown into the water, in order to improve oxygenation efficiency, thus speeding up the rate of wastewater treatment. (4) Deep aeration: generally with a diameter of 0.5 ~ 6.0m, the depth of the aerator 50 ~ 60m, the use of hydraulic pressure to increase the rate of transfer of water and oxygen, to enhance its cleaning efficiency. 2, biofilm (1) biofilter: the waste water to flow through the filter surface biofilm growth, through the exchange and biochemical effects of substance between both sides, the degradation of organic matter in the waste water, to purify the purpose. (2) rotating biological contactors: a plurality of closely spaced from the fixed disc of the composition on a horizontal axis, continuously rotating disk surface layer of the biofilm growth, to purify the waste water. (3) Biological Contact Oxidation: habitat for microbial attached packing all immersed in the wastewater, and the use of machinery and equipment to the waste water was filled with air, so that the degradation of organic matter in waste water, to purify water. 3, biological oxidation tower: the use of microorganisms in water algae, aquatic plants and other wastewater aerobic or anaerobic biological treatment of natural or artificial pond. 4, land treatment system (1) Land percolation: use of soil microbial membranes and plant roots purification capacity of pollutants (filtration, adsorption, microbial decomposition, etc.) to deal with sewage, while the use of sewage water and fertilizer to promote crop, grass, trees grow. (2) Sewage Irrigation: The main purpose of irrigation, in order to make full use of purified sewage. 5, anaerobic biological treatment method: the use of anaerobic microorganisms (microbes such as methane, etc.) decomposition of organic matter in waste water, to purify water purposes, while producing methane gas, CO2 and other gases. Anaerobic biological treatment is mainly used for treatment of high concentration organic wastewater and sludge nitrification. Physical chemical raw water tank → → grid → adjust ultrafiltration flocculation and sedimentation tank → → → water disinfection. The use of physical and chemical combined effects of the waste water purification methods. Usually it refers to the wastewater treatment system consists of physical and chemical methods consisting of, or that individual treatment methods include physical and chemical processes, such as flotation, stripping, crystallization, adsorption, extraction, electrolysis, electrodialysis, ion exchange, reverse infiltration. 1935 W. Rudolph and EH Telunike began experimenting with the physical and chemical treatment of sewage treatment systems. With industrial development, the growing complexity of industrial waste water quality, wastewater, many pollutants, such as heavy metal ions, by conventional biological treatment method is difficult to remove; many complex organic compounds, biological degradation is difficult; the concentration of toxic pollutants than microorganisms When the tolerance limit, not suitable for biological treatment. To protect the environment and the rational use of water resources, waste water discharge standards are becoming increasingly stringent, wastewater reuse rate of increasingly demanding. Therefore, since the 1970s, physical chemical treatment to get widespread attention and rapid development.