Combined rural sewage treatment process and system

A technology of rural sewage and treatment process, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. , to achieve the effect of convenient management, saving operating costs and simple process

Inactive Publication Date: 2011-04-06
SHANGHAI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the rapid development of small towns and villages in our country, the continuous expansion of built-up area, the rapid expansion of township enterprises, and the continuous population density have exacerbated the environmental pollution problems of small towns and villages: the sewage discharge of small towns and villages has continued to increase, but Most of them do not have effective treatment facilities, and are often discharged into the surrounding water system randomly. This not only causes the environmental pollution of small towns and villag

Method used

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  • Combined rural sewage treatment process and system
  • Combined rural sewage treatment process and system

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Effect test

Embodiment 1

[0017] Embodiment one: see figure 1 , the treatment steps of this composite rural sewage treatment process are as follows:

[0018] 1) Wastewater is treated by high-efficiency anaerobic reaction: after the waste water is pretreated by grit chamber 2 from grid well 1, it is treated by high-efficiency anaerobic reaction in high-efficiency anaerobic pond 3, that is, it is hydrolyzed by acidifying bacteria in high-efficiency anaerobic reactor Decomposition, hydrolysis and acidification, gradually decomposed into organic acids, alcohols and small molecular organic substances, and then further converted into methane and carbon dioxide by methanogenic bacteria;

[0019] 2) Multi-filler biological filtration treatment: the wastewater treated by high-efficiency anaerobic reaction, under the lifting action of the pump 7, enters the multi-filler bio-trickling filter 4 for treatment by the spray system, and the multi-filler bio-filler in the pool degrades organic pollution substances and...

Embodiment 2

[0021] Embodiment two: see Figure 1 , this composite rural sewage treatment system is applied to the above sewage treatment process, including a high-efficiency anaerobic tank 3 and a multi-filler biological trickling filter 4, and the outlet of a grid well 1 is connected to the high-efficiency anaerobic tank through a grit chamber 2 The inlet of the oxygen tank 3, the outlet of the high-efficiency anaerobic tank 3 is connected to the spray system on the top of the multi-filler biological trickling filter 4 through a pump 7, and the outlet of the multi-filler biological trickling filter 4 passes through a pump 7 The secondary settling tank 5 is connected to a constructed wetland 6, and the constructed wetland 6 discharges up-to-standard purified water.

[0022] The pool structure of the multi-filler biological trickling filter: adopts an open network multilayer structure, which is a layered module structure, with 8 layers in total; each layer of module structure is supported ...

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Abstract

The invention relates to a combined rural sewage treatment process and system. The process comprises the following steps: 1) efficient anaerobic treatment of wastewater; 2) multi-filler biological filtration; and 3) artificial wetland purification. In the system, an outlet of a grating well is connected with an inlet of an efficient anaerobic pond through a grit basin; the outlet of the efficient anaerobic pond is communicated with a spraying system on the upper part of a multi-filler biological trickling filter through a pump; the outlet of the multi-filler biological trickling filter is communicated with an artificial wetland through a secondary sedimentation tank; and the artificial wetland discharges standard purified water. By the process, most of the CODcr, BOD5, NH3-N and the like in the wastewater are removed, wherein the removal rate of CODcr can reach 80-85%, the removal rate of BOD5 can reach 90-95%, and the removal rate of NH3-N can reach 70-80%.

Description

technical field [0001] The invention relates to a process and system for treating domestic sewage in small towns, in particular to a compound rural sewage treatment process and system, belonging to the technical field of environmental engineering water treatment. Background technique [0002] With the rapid development of small towns and villages in our country, the continuous expansion of built-up area, the rapid expansion of township enterprises, and the continuous population density have exacerbated the environmental pollution problems of small towns and villages: the sewage discharge of small towns and villages has continued to increase, but Most of them do not have effective treatment facilities, and are often discharged into the surrounding water system randomly. This not only causes the environmental pollution of small towns and villages to become increasingly serious, but also becomes an important source of pollution for the regional water environment, resulting in a ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 戴英俊邹联沛霍耀东温从汉
Owner SHANGHAI UNIV
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