A fully pneumatic integrated domestic sewage treatment device and method

Abstract

The invention relates to a fully-pneumatic integrated treatment device for domestic sewage. The fully-pneumatic integrated treatment device comprises a water collecting tank, a mud-water mixing tank, an SND (Simultaneous Nitrification and Denitrification) reaction tank, a three-phase separation tank, an outlet water tank and a pneumatic device, wherein a pneumatic water lifting device is arranged at one side of the water collecting tank, disc type aerators are arranged at the bottom of the SND reaction tank, and a pneumatic sludge return pipe is arranged at the bottom of the three-phase separation tank; and the pneumatic device comprises an air storage cabinet and an air compressor, wherein an air inlet end of the air storage cabinet is connected with the air compressor through an air control valve, an air outlet end of the air storage cabinet is divided into three branch pipelines from the back of a trunk pipeline, a first branch pipeline is connected with the water collecting tank through a pressure reducing valve, a second branch pipeline is connected with the SND reaction tank through a pressure reducing valve, and a third branch pipeline is connected with the pneumatic sludge return pipe at the bottom of the three-phase separation tank through a pressure reducing valve. According to the integrated treatment device disclosed by the invention, the structure is simple, control components are few, and the overhaul and maintenance are convenient; and meanwhile, through realizing microbial nitrification and denitrification reaction in the same system, the efficient removal of organic matters and nitrogen from the sewage is realized.

Description

technical field [0001] The invention relates to a domestic sewage treatment device and a treatment method, belonging to the field of water treatment, in particular to a fully pneumatic integrated domestic sewage treatment device and method. Background technique [0002] With the rapid development of China's rural economy, rural domestic sewage has become one of the main reasons for the deterioration of the rural water environment. China's rural sewage has the characteristics of a large total amount of discharge, but as an individual, the amount of water is small; the discharge is irregular; scattered, the area is large, and there is a lack of a complete sewage collection system. In view of this feature, it is more economically feasible to collect the sewage according to the divisions and disperse them separately for treatment. The integrated domestic sewage treatment device has opened up a new way for decentralized small-scale domestic sewage treatment. [0003] The integr...

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Problems solved by technology

However, the equipment is buried underground, which is not conducive to the regular maintenance of the mechanical equipment in the integrated device, especially after the equipment fails, it is inconvenient to maintain and replace parts.

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