Technique for deeply purifying urban sewage

A technology for deep purification and urban sewage, applied in the direction of biological water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of small urban sewage with low hydraulic power, poor infrastructure conditions, and complex water quality Large fluctuations and other problems, to achieve the effect of reducing power equipment, reducing construction time, and shortening sludge settling time

Inactive Publication Date: 2016-11-23
中电建环保科技有限公司 +1
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  • Abstract
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  • Application Information

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Problems solved by technology

However, for the sewage treatment and deep purification of small towns in my country, it is difficult to meet the characteristics of smal

Method used

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  • Technique for deeply purifying urban sewage
  • Technique for deeply purifying urban sewage
  • Technique for deeply purifying urban sewage

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with embodiment.

[0035] This embodiment discloses an integrated urban sewage treatment process and deep purification process equipment. The structure of the equipment is as follows: figure 1 with figure 2As shown, it includes a water inlet pipe 1, a regulating pond 2, an anaerobic pond 3, an anoxic pond 4, an aerobic pond 5, a nitrification sedimentation pond 6, a deep bed filter pond 7 and an outlet pipe 10 connected in sequence.

[0036] A water inlet pipe 1 is provided on the upper edge of the regulating tank 2, a nitrification sludge return pipe 8 and an aeration system air distribution pipe 92 are provided at the bottom, and an aeration device 9 is arranged in the regulating tank 2.

[0037] The anaerobic tank 3 contains baffles 31, and fixed fillers 32 are filled between the baffles 31.

[0038] The anoxic tank 4 is provided with a combined filler 41, and an aeration device 9 is arranged at ...

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Abstract

The invention discloses a technique for deeply purifying urban sewage. The technique comprises the following steps: (1) treating the sewage with regulating reservoir, and then putting into an anaerobic tank, an anoxia pool and an aerobiotic pool and performing biochemical treatment, thereby obtaining the purified water A; respectively maintaining sewage in the anaerobic tank, the anoxia pool and the aerobiotic pool for 2.5-3.5h, 5.5-6.5h and 11-13h; controlling the dissolved oxygen concentration in the anoxia pool and the aerobiotic pool at 0.25-0.4mg/L and 0.5-1.0mg/L; filling suspended filler into the aerobiotic pool, wherein the filling volume of the suspended filler is 65-75% of the volume of the aerobiotic pool; (2) putting the purified water A into a nitration settling pond for performing nitration settling treatment, thereby obtaining purified water B and nitrified sludge; returning the nitrified sludge to the regulating reservoir by a gas stripping system through a nitrified sludge return pipe; (3) purifying the purified water B with a deep bed filter chamber, thereby finishing deep purification for urban sewage. According to the technique, the organisms can be doubled, the treating effect can be increased, the tank volume can be reduced and the purifying technical equipment is simple in structure and reliable in process flow.

Description

technical field [0001] The invention relates to a deep purification process of urban sewage, which belongs to the technical field of sewage treatment. Background technique [0002] With the acceleration of urbanization, the population of villages and towns continues to concentrate, township enterprises develop rapidly, and the discharge of urban sewage continues to increase, while the construction of urban infrastructure is far behind and the development of urban construction, lacking necessary sewage collection systems and sewage treatment facilities, sewage The disordered and turbulent flow not only directly pollutes the ecological environment of the small town itself, but also causes serious pollution of the surrounding rivers and lakes. According to relevant reports, more than 70% of domestic sewage in my country will come from towns and communities, and the water pollution area of ​​small towns is quite large. [0003] At present, in the sewage treatment technology, th...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F11/02
CPCC02F1/001C02F3/302C02F9/00C02F11/02Y02W10/20
Inventor 刘德华李勇杜成琼肖武刘常斌
Owner 中电建环保科技有限公司
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