Sludge self-circulation dispersed sewage treatment device applicable to directly-discharged water body and method thereof

Abstract

The invention discloses a sludge self-circulation dispersed sewage treatment device applicable to a directly-discharged water body and a method of the device, and belongs to the technical field of sewage treatment. The sludge self-circulation dispersed sewage treatment device comprises an integrated reactor, wherein the integrated reactor is internally divided into an anoxic area, a sewage ascending area, a sewage descending area and a settling area; a first isolation plate is arranged between the anoxic area and the sewage ascending area; a second isolation plate is arranged between the sewage ascending area and the sewage descending area; and a third isolation plate is arranged between the sewage descending area and the settling area. The device adopts a sludge self-circulation nitrogen and phosphorus intensification elimination method which is applied to the directly-discharged water body, and through anoxic denitrification and chemical dosing auxiliary dephosphorization, the requirements on water effluent of one-class B in Municipal Sewage Treatment Plant Pollutant Discharge Standard (GB / T18918-2002) can be met. The biological reaction pool is high in sludge concentration, needs no sludge backflow facility, low in effluent concentration, simple and convenient in operation in sewage treatment and diverse in function, and unattended operation in a sewage treatment station is realized.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to a sewage treatment device and a sewage treatment method using the device, in particular to a sewage treatment system that can be used not only for urban and village sewage, but also for scattered villas, tourist areas and low-concentration organic industrial wastewater. A treatment device and a method for using it for sewage treatment. Background technique [0002] Sewage mainly includes domestic sewage and industrial wastewater. According to different population concentration conditions, residents in my country are divided into urban (including county) residents and village (including township) residents. Sewage generated in towns and villages is usually defined as centralized urban sewage and scattered village sewage. With the rapid development of our country's economy, the amount of urban sewage production continues to increase, and the quality of the urban water envir...

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Problems solved by technology

Relatively speaking, urban sewage treatment plants and most urban enterprises have a relatively high level of wastewater construction, and the automation level of sewage treatment units is relatively high. In order to deal with the removal of organic matter and nitrogen and phosphorus pollutants, a long process has been adopted. In the implementation, a relatively complicated process is applied, and even a membrane separation technology with a large investment is used.

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