Municipal sewage treatment system

A technology for treating system and urban sewage, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as high cost and low efficiency
CN104876341AInactive Publication Date: 2015-09-02้ป„ๅ‹‡
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
้ป„ๅ‹‡
Publication Date
2015-09-02
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to the field of sewage treatment, in particular to a municipal sewage treatment system comprising an adjustment pool (4), a treatment pool (1), a sludge pool (5) and a sludge concentration pool (6) which are connected sequentially through a pipeline. A stirring device (2) is arranged on the rear side wall of the treatment pool (1) and comprises four fixed stirring blades different in length, a baffle (250) perpendicular to the fourth stirring blade (25) is arranged at the end of the same, and pebbles (3) are laid in the treatment pool (1). Irregular flowing of water flow in the treatment pool can be realized, the water flow can be fully disordered, medicament placed into the treatment pool can be ensured to be mixed with a water body fully, and the pebbles, with surface mycoderm, below the treatment pool can be made to contact with the water body above the treatment pool, so that decrease amount of chemical oxygen demand (COD) and biochemical oxygen demand (BOD) in water can be increased, and effect of removing carbon, sulfur and solid nitrogen can be realized to greatest extent.
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Description

technical field

[0001] The invention relates to the field of sewage treatment, in particular to an urban sewage treatment system. Background technique

[0002] With the growth of urban population in our country, the expansion of residential areas and the further concentration of population, domestic water consumption has also increased, resulting in more and more sewage discharged from cities. Urban domestic sewage is mainly composed of kitchen washing, toilet flushing, bathing, laundry water, etc. The organic nitrogen and ammonia nitrogen contained in the sewage mainly come from the waste of protein metabolism in human food, such as feces. At present, urban domestic sewage has become the main pollution source of urban water in my country, and the existing sewage treatment facilities are unable to withstand the increasing amount of sewage treatment, resulting in a large amount of domestic sewage being discharged into rivers and lakes without purification, polluting natural w...

Claims

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