Biological coupled nitrogen and phosphorus removed sewage purification and regeneration treatment method and system

Abstract

The invention discloses a biological coupled nitrogen and phosphorus removed sewage purification and regeneration treatment method and a biological coupled nitrogen and phosphorus removed sewage purification and regeneration treatment system. The method comprises the following steps of: delivering the sewage to a sand settling and water collecting tank; delivering the sewage subjected to sand settling treatment to a regulating tank, and then delivering the sewage to a biological coupled purification tank; delivering the water purified by the biological coupled purification tank to a biological filter tank, finally filtering and removing mixed suspension, and introducing the discharged water to a disinfection tank to perform disinfection; and discharging or recycling the disinfected final water. The system comprises the sand settling and water collecting tank, the regulating tank, the biological coupled purification tank, the biological filter tank and the disinfection discharge tank connected sequentially. According to the biological coupled nitrogen and phosphorus removed sewage purification and regeneration treatment method and the biological coupled nitrogen and phosphorus removed sewage purification and regeneration treatment system, the system has the advantages of long service life, simple daily operating maintenance, low energy consumption, high efficiency and low cost, does not generate secondary pollutants such as sludge, stench and the like; and synchronous nitrogen and phosphorus removal and decomposition of carbon-containing organic substances are realized.

Description

technical field [0001] The invention relates to the technical field of biochemical purification treatment of industrial and domestic sewage, in particular to a technology for simultaneously purifying and regenerating organic industrial wastewater containing carbon, ammonia nitrogen, phosphorus and related organic pollutants and urban domestic sewage by utilizing microorganisms in a low-energy-consumption manner. Background technique [0002] With the development of social economy, the population of urban residents has increased rapidly, bringing a large amount of domestic sewage, and the scattered small factories also produce a large amount of industrial wastewater. These untreated domestic sewage, untreated or substandard industrial wastewater The discharge also increases. When the load of organic pollutants is too high and exceeds the limit of dilution and degradation of the containing water body, the dissolved oxygen in the containing water body will be consumed rapidly an...

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Problems solved by technology

In the daily operation of this type of biofilm treatment device, the management personnel have high technical requirements, complex process, repeated backwashing to prevent clogging, limited service life of the physical filter membrane, high operating energy consumption, and high operating costs. high investment cost

[0006] At present, no matter what kind of sewage treatment process is used to build a sewage treatment plant, a large amount of organic sludge with a water content of more than 80% will be generated, which will easily cause secondary pollution.

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