A method for repairing micro-polluted water body and subsurface flow constructed wetland system

A constructed wetland system and micro-pollution technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of smooth surface that is not conducive to microbial attachment and growth, nitrogen and phosphorus pollutants Low removal rate, limited pollutant removal effect, etc., to achieve the effect of strong impact load resistance, low wetland resistance, and not easy to clog
CN102276110AInactive Publication Date: 2011-12-14CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2011-12-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for remedying the micro-polluted water body. The method comprises the following steps: 1) the micro-polluted water body firstly enters a first-stage water treatment area to perform sand settling and uniform water distribution; 2) the water body secondly enters a second-stage water treatment area-wetland bed, wherein the wetland bed is mainly composed of filler anda water plant, the water plant is giant reed, the filler is composed of upper filler and lower filler, the upper filler is gravel and the particle size is 5-10mm; the lower filler is the shale brick,the particle size of the shale brick is 10-60mm and the root system of the water plant grows in the filler; and 3) the water body finally enters a third-stage water treatment area to homogenize the effluent quality, and the water body can be discharged and enter the outer water body. The system has the following advantages: (1) no energy is consumed, the system is difficult to block; (2) the investment is low, the system is convenient to operate and manage; (3) the shock resistance is strong; and (4) the nitrogen-phosphorus removal rate is high and the system has a certain economic benefit.
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Description

technical field

[0001] The invention relates to a method for repairing polluted water bodies and the corresponding improved subsurface flow constructed wetland system of "Luzhu-shale bricks" for repairing polluted water bodies. field of environmental engineering.

[0002] Background technique

[0003] Slightly polluted source water refers to water bodies that are polluted by organic matter, and some water quality indicators exceed the standard for Class III water bodies in the "Environmental Quality Standards for Surface Water" (GB3838-2002). Slightly polluted water is generally caused by the sewage generated in industry, agriculture and life without proper treatment and directly discharged into water supply sources. Slightly polluted water mainly contains harmful pollutants such as particulate matter, trace organic matter, pesticides, and ammonia nitrogen. Micro-pollutants in slightly polluted water have the characteristics of large pollution range and wide influence ran...

Claims

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