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Biological response system for multistage sewage treatment as well as manufacturing method and sewage treatment method

A biological reaction and sewage treatment technology, applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. lower problem

Inactive Publication Date: 2011-07-13
TIANJIN WATER RESOURCES RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many defects and deficiencies. When the dissolved oxygen content in the constructed wetland is low, the aerobic microbial action in the surface aerobic zone is weakened, the water quality of the effluent is poor, and the concentration of dissolved oxygen in the effluent is low, which is not conducive to receiving self-purification of water body
Most of the matrix fillers are made of gravel packing beds. The variety and composition of the matrix fillers are relatively simple. The single composition of the matrix fillers forms a relatively uniform permeation system. The operation process of the water body is a simple horizontal movement, and the exchange between the upper and lower water bodies is poor. The water flow exchange between the upper aerobic and lower anaerobic zones is weak, resulting in a decrease in the purification treatment effect
In order to increase the exchange of upper and lower water bodies and prolong the water flow path in some horizontal flow wetlands, weirs are artificially set up at the bottom of the wetland treatment pool. Although the exchange intensity of the upper and lower water bodies is increased and the water flow path is extended, it is easy to form dead water areas and cause overall purification. Processing efficiency drops

Method used

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  • Biological response system for multistage sewage treatment as well as manufacturing method and sewage treatment method
  • Biological response system for multistage sewage treatment as well as manufacturing method and sewage treatment method
  • Biological response system for multistage sewage treatment as well as manufacturing method and sewage treatment method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0142] It consists of a multi-stage sedimentation pretreatment unit (1), a multi-stage hydrolysis acidification treatment unit (2), an aeration and oxygenation treatment unit (3) and a multi-stage subsurface flow wetland treatment unit (4) connected by a pipeline (14). The inflow wetland pool (35), the 2-component decomposition and infiltration wetland pool (36) and the outlet wetland pool (37) of the multi-stage subsurface flow wetland treatment unit (4) are arranged in sequence, and one side of the multi-stage subsurface flow wetland treatment unit (4) The multi-stage sedimentation pretreatment unit (1), the multi-stage hydrolytic acidification treatment unit (2) and the aeration and oxygenation treatment unit (3) are arranged side by side in sequence, and are connected by pipelines (14), such as figure 1 shown.

Embodiment 2

[0144] The multi-stage sedimentation pretreatment unit (1), the multi-stage hydrolytic acidification treatment unit (2), the aeration and aeration treatment unit (3) and the multi-stage subsurface flow wetland treatment unit (4) are arranged in sequence and connected to each other through the pipeline (14). connection, such as figure 2 shown.

Embodiment 3

[0146]The multi-stage sedimentation pretreatment unit (1) is a closed box, and the box is divided into at least 3 spaces by a partition (33), and the spaces are respectively the sedimentation and decomposition tank (6), the fermentation sedimentation tank (7) and the storage tank (8), a closed slag removal port (10) is arranged on the top of each space, and a sealing cover is installed on the slag removal port (10), forming a closed operating space.

[0147] The upper part of the wall of the sedimentation decomposition tank (6) on the side of the multi-stage sedimentation pretreatment unit (1) is provided with a sewage inlet (11), and the sewage inlet (11) is introduced into the sewage source through the pipeline (14), and the sewage inlet ( 11) A gate valve is set on the pipeline (14) to control the inflow of the sewage source, and the sewage source is domestic sewage and aquaculture wastewater. Set at least one inclined overflow pipe (9) in the middle of the partition (33) b...

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Abstract

The invention discloses a biological response system for multistage sewage treatment as well as a manufacturing method and a sewage treatment method. The biological response system is formed by connecting a multistage precipitation pretreatment unit, a multistage hydrolysis and acidizing treatment unit, an aeration oxygenation treatment unit and a multistage undercurrent wetland treatment unit through pipelines; the multistage undercurrent wetland treatment unit comprises a water inlet wetland pool, two groups of decomposition and percolation wetland pools and a water outlet wetland pool which are sequentially arrayed; and the multistage precipitation pretreatment unit, the multistage hydrolysis and acidizing treatment unit and the aeration oxygenation treatment unit are sequentially arranged on one side of the multistage undercurrent wetland treatment unit in parallel and are connected with one another through pipelines. The biological response system provided by the invention has the advantages of scientific design, reasonable structure, fewer electromechanical devices due to the adoption of an automatic flow mode, low operation cost, low sewage treatment expense, small floor area, obvious sewage treatment effect, convenience for operation and maintenance management, low cost on project capital construction and operation, and capability of carrying out purification treatment all the year round, ; the treated sewage can be directly discharged into reservoirs, rivers and lakes and is in accordance with discharge standards in China; and a bioecological technology has stronger self-regulation capability and repair capability.

Description

technical field [0001] The invention relates to a treatment facility for waste water and sewage, in particular to a biological reaction system for multi-stage sewage treatment, a manufacturing method and a sewage treatment method. Background technique [0002] Water pollution will cause the degradation of the ecosystem and the reduction of biodiversity in rivers and lakes. At present, the quality of surface water in many areas of our country is poor, and it is showing a deteriorating trend. The pollution of rivers flowing through large cities is particularly serious. Ecological deterioration At the same time, it seriously affects the landscape of the city. Usually, urban sewage treatment plants treat industrial and urban domestic sewage as the treatment object, and the effluent water quality is the second-level standard. deal with. Since the 1970s, water treatment technology of constructed wetlands has attracted people's attention. It has the advantages of low investment a...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 李金中刘学功李学菊
Owner TIANJIN WATER RESOURCES RES INST
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