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Method for improving microbial activity of artificial wetland

A technology for microbial activity and constructed wetlands, which is applied in the field of improving the microbial activity of various constructed wetlands. It can solve the problems of poor activity and small number of microorganisms, so as to promote distribution, improve the quality of living microenvironment, and improve biological activity and pollutant degradation ability. Effect

Inactive Publication Date: 2011-02-16
SOUTHEAST UNIV
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Problems solved by technology

[0004] Aiming at the problems of small number and poor activity of microorganisms in various wetland systems, the present invention provides a method for improving the activity of microorganisms in constructed wetlands, and effectively improves the activity and quantity of microorganisms by utilizing the synergistic effect of aquatic animals and biological plants

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Embodiment 1

[0031] The anaerobic-constructed wetland treatment system for rural domestic sewage is used to improve microbial activity. The system flow is as follows figure 1 As shown, among them, 1 is the artificial wetland, 2 is the anaerobic tank, 1-1 is the water inlet pipe, 1-2 is the gate valve, 1-3 is the water outlet pipe, 1-4 is the filling cinder, and the water inlet pipe and the water outlet pipe are perforated Tube. Adopt the Japanese Chizi Eisei earthworm of the present invention to be placed in the 50cm area below the surface layer of the wetland, the insertion age of the earthworm is ≤ half a year old, the body length deviation is ≤ 20%, and the inoculation density of the earthworm is 3 / dm 3 . The planting density of ordinary reeds is 40-60cm between rows, 15-30cm between plants, the weight of reeds is between 4g-16g, and the height of the bed below the reeds is ≥50cm. After adopting this scheme, the average DO concentration in the wetland effluent was 0.3mg / L higher than...

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Abstract

The invention discloses a method for improving microbial activity of an artificial wetland. The microbial activity of the artificial wetland is improved by adopting synergistic effect of an aquatic animal and an aquatic plant, wherein the aquatic animal is any one of earthworm, viviparus and loach; the aquatic plant is any one of reed, wild rice shoot and cress; and the method realizes the synergistic effect of the aquatic animal and the aquatic plant by certain condition control, and improves the microbial activity of the wetland and the pollutant removing capacity of the wetland. The controlled conditions comprise variety selection of the aquatic animal and the aquatic plant, quantity control, planting depth and density and the like. The method is suitable for improving the activity of various wetland microbes, can improve the treated microbe number of a wetland treatment system by one order of magnitude in domestic sewage treatment, and is particularly favorable for improving the denitrification efficiency of the wetland system.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a method for improving the activity of microorganisms in various constructed wetlands. Background technique [0002] Constructed wetland is a kind of artificially built and supervised and controlled wetland system. It makes full use of the characteristics of natural wetland system to purify sewage and the triple synergy of physics, chemistry and biology in natural ecosystems. Through filtration, adsorption, precipitation, ion exchange , plant absorption and microbial decomposition to achieve efficient purification of sewage, but due to insufficient natural oxygen supply, easy compaction and blockage of fillers, and insufficient number of microorganisms, especially the number of nitrogen and phosphorus removal bacteria, it is difficult to achieve standard treatment of sewage in a short period of time. It causes technical problems such as large floor area and low process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 李先宁吴磊金秋
Owner SOUTHEAST UNIV
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