Rural domestic sewage treatment system suitable for northern part of China and technology thereof

Abstract

The invention discloses a rural domestic sewage treatment system suitable for the northern part of China and a technology thereof. The system consists of a sewage anaerobic hydrolysis tank, an aerobic biological filter, a horizontal subsurface flow artificial wetland, a water pump and pipes, wherein the aerobic biological filter comprises an atomization nozzle and a light filter material; the horizontal subsurface flow artificial wetland comprises water plants, a dephosphorization filler and a liquid level controller. The sewage to be treated flows automatically into the anaerobic hydrolysis tank from a water inlet; and the treated sewage enters the aerobic biological filter, then enters the horizontal subsurface flow artificial wetland to be treated; and the effluent is discharged according to the standard. An efficient denitrification and dephosphorization technology is adopted in the system, an all-underground treatment facility is used and measures such as wetland liquid level controllable regulation are adopted, thus the operating cost can be reduced, the treatment efficiency can be increased, the efficient and stable operation can be realized in winter under a cold climate and a new rural domestic sewage treatment technology is provided for the northern part of China.

Description

Technical field: [0001] The invention belongs to the technical field of rural domestic sewage treatment, and relates to a rural domestic sewage treatment system and process suitable for the northern regions of my country. Background technique: [0002] With the rapid development of my country's rural economy and the continuous improvement of people's living standards, the discharge of rural domestic sewage continues to increase, which has become an important cause of eutrophication of surface water bodies such as rivers and lakes and excessive nitrate in groundwater. It poses a serious threat and has aroused widespread concern from the whole society. The temperature in the north of China is generally lower than that in the south, especially in winter. Most of the existing decentralized rural sewage treatment technologies such as unpowered anaerobic biological treatment, land infiltration, and constructed wetlands have poor nitrogen and phosphorus removal effects in winter. c...

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Problems solved by technology

The temperature in the north of my country is generally lower than that in the south, especially in winter. Most of the existing decentralized rural sewage treatment technologies such as unpowered anaerobic biological treatment, land infiltration, and constructed wetlands have poor nitrogen and phosphorus removal effects in winter. common problem

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