Sewage treatment method based on blasting laminated artificial wetland

A sewage treatment method and a technology for constructed wetlands, which are applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problem that the overlap cannot be effectively utilized and the total nitrogen removal effect of sewage is limited. , unsatisfactory sewage treatment effect, etc., to achieve good denitrification and phosphorus removal capacity, improve organic matter and ammonia nitrogen removal capacity, and improve the effect of effluent quality.

Inactive Publication Date: 2012-07-25
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this device for sewage treatment has the advantages of small footprint and wide application range compared with single-layer constructed wetlands or other treatment processes. However, the interior of the treatment device is hollow, and the overlapping parts of each sub-constructed wetland cannot be effectively utilized. , in order to improve the purificatio

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  • Sewage treatment method based on blasting laminated artificial wetland
  • Sewage treatment method based on blasting laminated artificial wetland
  • Sewage treatment method based on blasting laminated artificial wetland

Examples

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Example Embodiment

[0039] Example 1

[0040] The method of the present invention is used to treat a certain rural domestic sewage, the CODcr of the rural domestic sewage is 225mg / L, and the ammonia nitrogen (NH 3 -N) The concentration is 23.5mg / L, the total nitrogen (TN) concentration is 33.7mg / L, and the total phosphorus (TP) concentration is 2.0mg / L. The fine-grid pretreatment unit adopts a water ditch with a fine-grid. The inclination angle of the fine grid is 45°, the gap is 20mm, the flow velocity of sewage in the ditch is 0.5m / s, and the flow velocity through the fine grid is 0.7m / s. The buried anaerobic digester adopts a concrete structure Spherical tank, with a water outlet 30cm from the top of the buried anaerobic digester, the flow rate of the sewage through the outlet is 0.5m / s, and an upper packing support 25cm below the water outlet, at a distance from the buried anaerobic digester A lower filler bracket is set at the bottom 35cm, and elastic three-dimensional filler is fixed and suspe...

Example Embodiment

[0043] Example 2

[0044] Using the method of the present invention to treat a certain rural domestic sewage, the rural domestic sewage CODcr is 258mg / L, ammonia nitrogen (NH 3 -N) The concentration is 28.0mg / L, the total nitrogen (TN) concentration is 37.5mg / L, and the total phosphorus (TP) concentration is 1.8mg / L. The fine-grid pretreatment unit adopts a water ditch with a fine-grid. The inclination angle of the fine grid is 60°, the gap is 25mm, the flow velocity of sewage in the ditch is 0.6m / s, and the flow velocity through the fine grid is 0.85m / s. The buried anaerobic digester adopts concrete structure Spherical tank, with a water outlet 30cm away from the top of the buried anaerobic digester. The flow rate of the sewage through the outlet is 0.6m / s, and an upper packing bracket is set 25cm below the water outlet, at a distance from the buried anaerobic digester A lower filler bracket is set at the bottom 35cm, and elastic three-dimensional filler is fixed and suspended b...

Example Embodiment

[0047] Example 3

[0048] Using the method of the present invention to treat a certain rural domestic sewage, the rural domestic sewage CODcr is 315mg / L, ammonia nitrogen (NH 3 -N) The concentration is 20.8mg / L, the total nitrogen (TN) concentration is 30.5mg / L, and the total phosphorus (TP) concentration is 1.5mg / L. The fine-grid pretreatment unit uses a water ditch with a fine-grid. The inclination angle of the fine grid is 60°, the gap is 16mm, the flow velocity of sewage in the ditch is 0.7m / s, and the flow velocity through the fine grid is 0.9m / s. The buried anaerobic digester adopts concrete structure Spherical tank, with a water outlet 30cm from the top of the buried anaerobic digester, the flow rate of the sewage through the outlet is 0.5m / s, and an upper packing support 25cm below the water outlet, at a distance from the buried anaerobic digester A lower packing bracket is set at the bottom 35cm, and elastic three-dimensional packing is fixed and suspended between the up...

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Abstract

The invention discloses a sewage treatment method based on blasting laminated artificial wetland, which belongs to the technical field of sewage treatment. The sewage treatment method includes that (1) pretreated sewage is obtained after sewage is filtered and digested in an anaerobic manner, and enters the blasting laminated artificial wetland, the blasting artificial wetland structurally comprises an upper layer and a lower layer, and packing is uniformly filled in the blasting laminated artificial wetland; (2) the pretreated sewage in the blasting laminated artificial wetland is uniformly distributed on the top of the upper layer, and contacts with air blasted into the blasting laminated artificial wetland to be biologically degraded when flowing to the bottom of the upper layer; and (3) the sewage is gathered at the bottom of the upper layer after being biologically degraded and then flows into the lower layer, horizontally flows in the lower layer and is decontaminated in an anoxic environment, an anaerobic environment and an aerobic environment sequentially, and sewage treatment is completed. The method is used for treating domestic sewage in rural areas, and has the advantages of high treatment efficiency, fine treatment effect and low operation cost.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment method based on blast laminated constructed wetlands. Background technique [0002] The indiscriminate discharge of rural domestic sewage without treatment can cause serious pollution of surface water runoff, and can also pollute water source water quality, increase water supply risks and treatment costs in cities, and cause difficulties in rural domestic water use. But at the same time, due to the limitation of natural conditions, rural domestic sewage is scattered and difficult to collect, and it is difficult to lay a large-scale sewage collection pipe network, so that rural domestic sewage cannot be included in large-scale centralized sewage treatment plants for centralized treatment. Able to find more suitable high-efficiency and low-consumption sewage treatment processes and methods according to local conditions. [0003] At present, the rural do...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 顾震宇胡智锋韦彦斐裘知
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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