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Method for repairing micro-polluted water body by utilizing bottom mud biological agent

A biological preparation, micro-pollution technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as decline, difficult to deal with foreign bacteria agents, etc., and achieve the treatment effect Good, good biosecurity, effectiveness in preventing and controlling eutrophication

Inactive Publication Date: 2013-05-22
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding biological agents to slightly polluted water will cause ecological risks, and it is difficult for foreign agents to adapt to the source water environment in a short time, resulting in a decline in the treatment effect

Method used

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  • Method for repairing micro-polluted water body by utilizing bottom mud biological agent
  • Method for repairing micro-polluted water body by utilizing bottom mud biological agent
  • Method for repairing micro-polluted water body by utilizing bottom mud biological agent

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Experimental program
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Effect test

Embodiment 1

[0035] The micro-polluted water body to be treated in this embodiment is: the landscape water body of Tang Furong Garden in Xi'an City, according to the technical scheme of the present invention, according to the characteristics of the water quality of the micro-polluted water body to be treated, 2 parts by weight of nitrification sediment and 1 weight part The denitrification bottom mud of 100% is mixed to make the mixed bottom mud, and the volume of the bottom mud biological agent added is one millionth of the volume of the micro-polluted water body to be treated, and there is a good treatment effect, from figure 1 and figure 2 It can be seen that the removal effect of the sediment biological agent on ammonia nitrogen and total nitrogen is poor when the dosage is 1 / 10 million, while the removal effect of 1 / 100,000 and 1 / 1 million is not much different. Considering To 1 / 1000000, the amount of sediment biological preparation is less, and the actual application dosage is 1 / 100...

Embodiment 2

[0037] The slightly polluted water source water to be treated in this embodiment is: Shibianyu Reservoir, Xi'an City. According to the technical scheme of the present invention, according to the water quality characteristics, only the denitrification sediment is used as the biological agent, and the volume of the added sediment biological agent is When one millionth of the volume of the micro-polluted water body to be treated has a better treatment effect, from image 3 and Figure 4 It can be seen that after 15 days of continuous measurement, the sediment biological preparation can significantly accelerate the nitrification process of the water body, and the final ammonia nitrogen removal rate reaches 96.84%. The removal rate of the preparation, the removal rate of the total nitrogen by the sediment biological preparation reached 39.45%, and the highest removal rate of the control was only 14.64%, and the bottom mud biological preparation showed a better biological nitrogen r...

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Abstract

The invention discloses a method for repairing a micro-polluted water body by utilizing a bottom mud biological agent. The method comprises the following steps of: firstly enriching acclimatized heterotrophic nitrifiers by utilizing a manner of gradually reducing the concentration of nutrients to enable the heterotrophic nitrifiers to be dominant flora; secondly enriching acclimatized aerobic denitrifying bacteria by utilizing the manner of gradually reducing the concentration of the nutrients to enable the aerobic denitrifying bacteria to be the dominant flora; thirdly compounding acclimatized nitrified and denitrified bottom mud according to different water qualities to obtain the bottom mud biological agent; and finally injecting the prepared bottom mud biological agent into the micro-polluted water body, and carrying out in-situ repair on the micro-polluted water body by utilizing the bottom mud biological agent. According to the method for repairing the micro-polluted water body by utilizing the bottom mud biological agent, disclosed by the invention, the utilized biological agent bacteria source is from water body bottom mud to be treated, the adaptive capacity to environment is strong, and a treatment effect is good; carbon removal and denitrification can be synchronized, the water quality of the micro-polluted water body is modified, and water body prevents from generating eutrophication; simultaneously, the method disclosed by the invention has excellent biological safety and low ecological risk.

Description

technical field [0001] The invention relates to sewage treatment technology, in particular to a method for repairing micro-polluted water bodies with sediment biological preparations. Background technique [0002] In recent years, the problem of eutrophication of lakes and reservoirs in my country has become increasingly serious. Only in 2006 and 2007, there were more than a dozen cases of water source reservoirs (lakes) seriously affecting urban water supply due to eutrophication, such as Wuxi Taihu Lake, Changchun Cyanobacteria outbreaks and water eutrophication occurred in Xinlicheng Reservoir, Tashan Reservoir in Ganyu County, Jiangsu Province, Liuwan Reservoir in Tongchuan, Shaanxi, Chaohu Lake in Anhui, Gangnan Reservoir and Huangbizhuang Reservoir in Shijiazhuang, and Fenghuangshan Reservoir in Zhuhai. Among the 28 nationally controlled key lakes (reservoirs) tested in 2008, 4 met Class II water quality, accounting for 14.3%; 2 met Class III water quality, accounting f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34
Inventor 苏俊峰黄廷林王旭冕卢金锁魏巍袁杰智利黄文斌
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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