That is, domestic sewage, industrial wastewater and runoff sewage within urban areas. It is generally collected by urban pipelines and should be treated in urban wastewater treatment plants before being discharged. In addition to urban sewage contains a large number of organic matter and germs, viruses, due to the high degree of industrial development, the amount of industrial wastewater (accounting for about 60 ~ 80 per cent of the total amount of urban sewage) water quality is becoming more and more complex and runoff sewage pollution is becoming more and more serious, so that the urban sewage contains a variety of types, to varying degrees of a variety of toxic and hazardous pollutants. The treatment of urban wastewater involves many aspects, and comprehensive planning must be carried out for the sewage system, the location of sewage treatment plants and treatment processes, and the requirements for the utilization and discharge of treated wastewater. Municipal sewage is a water source with highly variable water quality. The water is turbid, malodorous, slightly alkaline, high in nitrogen and phosphorus, and the concentrations of total dissolved solids, COD, BOD, silica, ammonia, and a number of other pollutants change very frequently. In addition to containing a large number of organic matter, germs, viruses, urban sewage also contains various types of toxic and harmful pollutants of different degrees, posing a huge threat to the human living environment.
Simple pre-treatment, only need to remove large particulate impurities, strong anti-pollution ability, long chemical cleaning cycle.Short process, simple control, system recovery rate 85-95%, small footprint, footprint reduce by 30% compared with same recovery rate UF+RO system.Good system stability, there is no ultrafiltration broken wire, membrane flux attenuation problems. OpEx reduce by 30-40%.
Yantai Tuoziwan municipal sewage reclaimed water reuse project 12500m³/d
