It is understood that, at present, most of the sewage is directly discharged into sewers or rivers after a single treatment, and advanced treatment is needed for uses such as drinking water, landscape water, and green space irrigation.
According to Yuan Xiqiang, senior engineer of the Chief Engineer Office of Puhua Holdings Co., Ltd., the micro-filter cloth filter is mainly used for further purification of surface water, advanced treatment of wastewater, and reuse of water. The advanced treatment and reclaimed water of the micro-filter cloth filter is installed after the conventional secondary sewage treatment system. It is especially suitable for the upgrading of the existing sewage treatment plant. Combined with dosing, phosphorus and heavy metals can be removed to make the water flow from Class B reaches Class A. When the effluent of a sewage treatment plant introduces rivers and lakes with a relatively small dilution capacity for use as urban landscape water and general reuse water, the first-level standard A standard is implemented.
Micro filter cloth filter is not an innovation of filtration mechanism, but an innovation of design ideas. Since the pore size of the filter cloth is as small as micron, fine particles with a particle size of a few micrometers can be cut off. Therefore, the quality of the effluent and the stability of the effluent are better than those of the particulate filter. The performance parameter table of the micro-filter cloth filter shows that when the micro-filter cloth filter is used to filter the effluent of the activated sludge in the final settling tank, the suspended solids can be equal to or less than the design water quality of 30 mg/L. 5mg/L, but the general effect of sand filtration is greater than 10mg/L. In addition, the equipment also features low operating costs, low installed power and small footprint. At present, the technology and equipment have been put into use at Anyang Steel Plant, Anyang Wastewater Treatment Plant and Dalian Tiger Beach Wastewater Treatment Plant.
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