Preparation and application of aerobic denitrifying bacterial agent for enhancing lakeside wetland nitrogen removal function

The technology of nitrifying bacteria agent and wetland is applied in the field of preparation and application of aerobic denitrifying bacteria agent, which can solve the problems such as the limited number of aerobic denitrifying bacteria and the limitation of nitrogen removal effect, so as to increase the removal rate and enhance the denitrification effect. , the effect of strong application prospects

Inactive Publication Date: 2014-08-13
YUNNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the number of aerobic denitrifying bacteria in the lakeside wetland ecosystem is

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] In a lakeside wetland in Dianchi Lake, Kunming, the total nitrogen content of the influent water quality is 8.25 mg / l, and the total nitrogen content of the effluent water quality is 3.71 mg / l. Add 100g per square meter of aerobic denitrifying bacteria to the roots of wetland plants. After 72 hours, the total nitrogen content of the effluent is 2.41 mg / l, which increases the nitrogen removal efficiency by 35%.

Embodiment 2

[0015] In a lakeside wetland in Dianchi Lake, Kunming, the total nitrogen content of the influent water quality is 10.33 mg / l, and the total nitrogen content of the effluent water quality is 4.23 mg / l. Add 200g per square meter of aerobic denitrifying bacteria to the roots of wetland plants. After 72 hours, the total nitrogen content of the effluent is 2.54 mg / l, which increases the nitrogen removal efficiency by 40%.

Embodiment 3

[0017] In a lakeside wetland in Dianchi Lake, Kunming, the total nitrogen content of the influent water quality is 6.79 mg / l, and the total nitrogen content of the effluent water quality is 2.99 mg / l. Add 300g per square meter of aerobic denitrifying bacteria to the roots of wetland plants. After 72 hours, the total nitrogen content of the effluent is 1.74 mg / l, which increases the nitrogen removal efficiency by 41.8%.

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PUM

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Abstract

The invention relates to preparation and an application of an aerobic denitrifying bacterial agent for enhancing a lakeside wetland nitrogen removal function, and belongs to the fields of bioengineering technology and environmental protection. The invention provides the aerobic denitrifying bacterial agent for enhancing the lakeside wetland nitrogen removal function, wherein the bacterial agent includes 3 strains (WF065, WF084, WF092) of pseudomonas spp., and is obtained by separating and screening from Dian lake lakeside wetland plant root system soil. Culture materials of the 3 pseudomonas spp. strains are mixed according to the weight ratio of 1:1:1. The prepared aerobic denitrifying bacterial agent can obviously enhance the lakeside wetland nitrogen removal function.

Description

technical field [0001] The invention relates to the preparation and application of an aerobic denitrification bacterial agent for enhancing the denitrification function of lakeside wetlands, and belongs to the fields of bioengineering technology and environmental protection. Background technique [0002] Lakeside wetlands are an important technical measure to control polluted lakes. The lakeside wetland is mainly composed of water body, substrate, aquatic wet plants and microorganisms. It makes full use of the physical, chemical and biological triple coordination of the substrate-microbe-plant complex ecosystem to purify the lake water. The removal of nitrogen in lake water mainly depends on the nitrification reaction to firstly remove NH 3- N oxidation to N0 3 -N, and then denitrify the N0 3 -N reverts to N 2 and escape from the water. Bacterial denitrification includes four reduction steps, which are catalyzed by nitrate reductase, nitrite reductase, nitric oxide redu...

Claims

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Application Information

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IPC IPC(8): C12N1/20C02F3/34C12R1/38
Inventor 何洁沈锐侯春李莹琨侯念妤朱留芳杨宗成朱博伟
Owner YUNNAN UNIV
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