Decentralized treatment device adapting to domestic sewage discharge characteristics

Abstract

The invention discloses a decentralized treatment device adapted to domestic sewage discharge characteristics. The decentralized treatment device comprises a contact oxidation tank, a sedimentation tank, a descending vertical subsurface flow constructed wetland, an aeration oxygenation tank and other treatment units, as well as pipeline equipment, a control valve, an aeration assembly and a control device. The treatment device has high biotechnology efficiency and ecological technology stability, and has a good removal effect on organic matters, nitrogen and phosphorus; the treatment device iscompact in structure and reasonable in the layout of purification units, and can greatly reduce the influence of temperature on biological and ecological processes; and based on the control device, the treatment device can adapt to sewage discharge, delay wetland blockage, and reduce operation cost and management difficulty. The treatment device is of a cylindrical structure in appearance, smallin occupied area, convenient to install, low in cost and suitable for treatment of decentralized domestic sewage in rural areas, tourist spots and the like.

Description

technical field [0001] The invention relates to the field of environmental engineering sewage treatment, in particular to a distributed treatment device adapted to the discharge characteristics of domestic sewage. Background technique [0002] Domestic sewage is one of the main sources of water pollution in my country. In urban areas, the perfect drainage pipe network and centralized sewage treatment facilities ensure a high domestic sewage treatment rate. However, in most rural areas and many tourist attractions, limited by economic and technical conditions, the feasibility of centralized sewage treatment is low, and decentralized treatment has become an ideal choice. [0003] Different from centralized domestic sewage, the discharge characteristics of decentralized domestic sewage are as follows: 1) There is a significant difference between day and night, and most of the water is discharged during the day, while the water at night is almost zero; The change pattern withi...

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Problems solved by technology

[0005] The bio-ecological combination technology has a good effect in the application of decentralized domestic sewage treatment, but there are still some problems: 1) The water volume of decentralized domestic sewage varies greatly between day and night, which is easy to cause waste of energy consumption during operation; 2) Different biological and ecological The selection and combination of processes directly affect the purification effect; 3) The treatment efficiency of biological and ecological processes is not good at low temperatures; 4) The problem of easy clogging of ecological processes represented by constructed wetlands still exists

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