Novel process for BC urban sewage treatment

A technology of urban sewage and new technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve the effect of simple process, saving operating costs, and convenient operation of enterprises

Active Publication Date: 2014-07-09
青海洁神环境科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of biological contact oxidation treatment technology are: limited by the design parameters and process layout, if the design and operation are improper, the filler may be blocked, in addition, the water distribution and aeration are not easy to be uniform, and dead ends may appear locally
[0008] In summary, the existing technology has the following problems: the removal rate of nitrogen and phosphorus is not high, the floor area is large, and the power consumption is high
The removal process of nitrogen and phosphorus is complex, generally involving microbial nitrification, denitrification, phosphorus release and phosphorus absorption, etc.
The removal rate of nitrogen and phosphorus in the traditional activated sludge method is very low, so the traditional activated sludge method has been improved, and the denitrification capacity can be improved by prolonging the aeration time and reducing the load operation, but it will inevitably increase the area occupied , power consumption and operating costs, due to the limitation of biomass in the activated sludge process and the characteristics of phosphorus accumulating bacteria, the phosphorus removal effect is not obvious; the main disadvantage of biological contact oxidation treatment technology is: limited by design parameters and process layout, If the design and operation are improper, the packing may be blocked. In addition, the water distribution and aeration are not easy to be uniform, and there may be dead spots in some parts. This method is currently only used in industrial wastewater or small-scale domestic wastewater.

Method used

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  • Novel process for BC urban sewage treatment

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: A new process for BC urban sewage treatment, which consists of the following steps, the first step: domestic sewage enters the coarse grid well through the municipal pipe network to remove large volumes of pollutants, and the coarse grid mesh is 25 mm; Step 2: The water from the coarse grid well flows into the sewage lift pump well, and then from the sewage lift pump well to the fine grid well through the lift pump. The fine grid will intercept impurities and large particles in the water, and the fine grid mesh is 1.5 mm; the third step: the water from the fine grid well flows into the grit chamber, and the sediment in the water is settled in the grit chamber; the fourth step: the water from the grit chamber flows into the mixing distribution tank, and in the mixing distribution tank, the secondary sedimentation tank returns sewage The mud, the return sewage of the aeration tank and the raw water are mixed, and the mixing ratio is 1:1:2; the fifth step: the...

Embodiment 2

[0029] Embodiment 2: A new process for BC urban sewage treatment, which is composed of the following steps, the first step: the domestic sewage enters the coarse grid well through the municipal pipe network to remove large volumes of pollutants, and the coarse grid mesh is 65mm; the second Step 2: The water from the coarse grid well flows into the sewage lift pump well, and then from the sewage lift pump well to the fine grid well through the lift pump. The fine grid will intercept impurities and large particles in the water, and the fine grid mesh is 17mm; The third step: the effluent of the fine grid well flows into the grit chamber, and the grit chamber settles the sediment in the water; the fourth step: the effluent of the grit chamber flows into the mixing distribution tank, and in the mixing distribution tank, the secondary sedimentation tank returns sludge, The return sewage and raw water in the aeration tank are mixed, and the mixing ratio is 1:1:2; the fifth step: add ...

Embodiment 3

[0030] Embodiment 3: A new process for BC urban sewage treatment, which is composed of the following steps, the first step: the domestic sewage enters the coarse grid well through the municipal pipe network to remove large volumes of pollutants, and the coarse grid mesh is 100mm; the second Step 2: The water from the coarse grid well flows into the sewage lifting pump well, and then from the sewage lifting pump well to the fine grid well through the lifting pump. The fine grid will intercept impurities and large particles in the water, and the fine grid mesh is 25mm; The third step: the effluent of the fine grid well flows into the grit chamber, and the grit chamber settles the sediment in the water; the fourth step: the effluent of the grit chamber flows into the mixing distribution tank, and in the mixing distribution tank, the secondary sedimentation tank returns sludge, The return sewage and raw water in the aeration tank are mixed, and the mixing ratio is 1:1:2; the fifth ...

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Abstract

The invention discloses a novel process for BC urban sewage treatment, relates to a sewage treatment process, and particularly relates to the novel process for the BC urban sewage treatment. According to the method, the sewage is discharged after being processed by a municipal pipe, a coarse screen well, a sewage pump well, a fine screen well, a grit chamber, JS-BC equipment, an aeration tank, a secondary sedimentation tank, a disinfection system and a measuring tank. The method has efficient nitrogen and phosphorus removal capacities and wonderingly BOD removal effect, is in no need of an additional deodorization system, can save energy and floor space, can greatly reduce residual sewage, and is good in effluent water quality. Municipal sewage treated by the method can reach an A-level standard of a discharge standard of pollutants for a municipal wastewater treatment plant.

Description

1. Technical field [0001] The invention relates to a sewage treatment process, in particular to a new process for BC urban sewage treatment. 2. Technical Background [0002] Urban domestic sewage mainly comes from households, businesses and urban public facilities, etc. Organic matter is the main pollutant of domestic sewage, such as: starch, protein, sugar and vegetable oil, etc. The chemical oxygen demand, biological oxygen demand, total Nitrogen and total phosphorus are relatively high. When water with high nitrogen and phosphorus content is discharged into the natural world, it will easily cause eutrophication of the water body, causing algae to grow and reproduce in large numbers, and in severe cases, it will cause red tides and algal blooms, which will deteriorate the water quality and pollute the environment. The main pollutants in urban domestic sewage are organic matter. For domestic sewage, biological methods are mainly used at home and abroad. Biological meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 柴建中陈洪福赵明杨植谢丁燕冯大伟梅华王伟伟刘文武刘刚曹美娜胡生虎
Owner 青海洁神环境科技股份有限公司
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