A system and method for short-range nitrification/denitrification biological denitrification in artificial wetland

A short-range nitrification and artificial wetland technology, which is applied in chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve the problems of external carbon source and low nitrification efficiency, and achieve enhanced reoxygenation capacity and nitrification capacity , Promote the effect of internal reoxygenation efficiency

Active Publication Date: 2020-04-10
BEIJING WATER SCI & TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages of the short-range nitrification / denitrification system in the prior art that require an additional carbon source and low nitrification efficiency, thereby providing a short-range nitrification / denitrification biological denitrification system in the artificial wetland and method

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  • A system and method for short-range nitrification/denitrification biological denitrification in artificial wetland

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Embodiment 1

[0058] This embodiment provides a biological nitrification / denitrification artificial wetland system, which includes an aeration tank 11 , a primary wetland unit 2 , a water collection tank 4 , a secondary wetland unit 3 and a biological pond 7 connected in sequence.

[0059] The above-mentioned system, wherein the main body of the system is arranged in the form of a composite vertical flow artificial wetland, the form of the primary wetland unit 2 is downstream, and the form of the secondary wetland unit 3 is upstream.

[0060] The above-mentioned system, wherein, the system also includes an inlet pump 9, a microporous aerator (aerator 12);

[0061] Wherein, the water inlet of the water inlet pump 9 is connected to the polluted water body, and its water outlet is connected to the water inlet arranged in the aeration tank 11, and the water inlet is located at the top of the aeration tank 11; the water outlet of the aeration tank 11 is connected to the primary wetland unit 2. T...

Embodiment 2

[0074] This embodiment provides a biological nitrification / denitrification artificial wetland system, which includes an aeration tank 11 , a primary wetland unit 2 , a water collection tank 4 , a secondary wetland unit 3 and a biological pond 7 connected in sequence.

[0075] The above-mentioned system, wherein the main body of the system is arranged in the form of a composite vertical flow artificial wetland, the form of the primary wetland unit 2 is downstream, and the form of the secondary wetland unit 3 is upstream.

[0076] The above-mentioned system, wherein, the system also includes an inlet pump 9, a microporous aerator (aerator 12);

[0077] Wherein, the water inlet of the water inlet pump 9 is connected to the polluted water body, and its water outlet is connected to the water inlet arranged in the aeration tank 11, and the water inlet is located at the top of the aeration tank 11; the water outlet of the aeration tank 11 is connected to the primary wetland unit 2. T...

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Abstract

The invention belongs to the technical field of domestic sewage treatment, and concretely relates to a system and a method for short-cut nitrification and denitrification biological nitrogen removal of a constructed wetland, especially suitable for treating micro-polluted surface water or domestic sewage. The main body of the system provided by the invention learns from the biological nitrogen removal water purification principle, and the circulating return form design of a multistage subsurface flow wetland system is adopted, so the system has the functions of plant absorption, medium sediment adsorption and microbial degradation; and aeration, water volume / water level regulation and other treasures in the front section are adopted to construct an anoxic / anaerobic-aerobic environment in the wetland unit, so the short-cut nitrification / denitrification nitrogen removal are achieved in the same wetland unit, and the biological nitrogen removal efficiency is significantly increased. The system does not require an external carbon source, so the system is economical, and the influences of the external source on the self balance of the wetland system are avoided.

Description

technical field [0001] The invention belongs to the technical field of domestic sewage treatment, and in particular relates to a short-range nitrification / denitrification biological denitrification system and method in artificial wetlands. The system and method are especially suitable for the treatment of slightly polluted surface water or domestic sewage. Background technique [0002] Constructed wetland is a kind of sewage ecological treatment project that simulates natural wetland, is artificially designed and constructed, and can be supervised and controlled. It is a composite ecosystem composed of substrate, plants, microorganisms and water body. Its decontamination mechanism is to use The physical, chemical and biological triple coordination among the substrate, plants and microorganisms realizes the efficient purification of sewage through filtration, adsorption, sedimentation, ion exchange, plant absorption and microbial decomposition. Because of the advantages of lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F1/281C02F3/302C02F3/32C02F3/34C02F9/00C02F2101/30
Inventor 战楠黄炳彬孟庆义楼春华赵立新
Owner BEIJING WATER SCI & TECH INST
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