Bio-floating bed and on-site three-dimensional bio-remediation method for micro-polluted water body

A biological floating bed and micro-pollution technology, which is applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of low efficiency of biological floating bed in-situ repair technology, small number of rhizosphere microorganisms, Poor adaptability and other problems, to achieve good water quality improvement effect, long duration of action, and improve transparency

Inactive Publication Date: 2014-02-12
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing biological floating bed mainly uses plants and rhizosphere microorganisms to remove pollutants in water. Due to the small number of rhizosphere microorganisms and poor adaptability, the efficiency of in-situ repair technology of biological floating beds is low.

Method used

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  • Bio-floating bed and on-site three-dimensional bio-remediation method for micro-polluted water body
  • Bio-floating bed and on-site three-dimensional bio-remediation method for micro-polluted water body
  • Bio-floating bed and on-site three-dimensional bio-remediation method for micro-polluted water body

Examples

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Effect test

Embodiment 1

[0050] In this embodiment, the micro-polluted water body sediment to be treated comes from Nanhu Lake in Xi'an City. According to the technical solution of the present invention, in-situ three-dimensional bioremediation is performed on the micro-polluted water body.

[0051] In this embodiment, zeolite, gravel and calcite are used as the covering bottom mud filler, mixed according to the ratio of 6:3:1, and the filler used in the biological floating island is a composite filler.

[0052] In this example, the SSW culture solution is used to prepare the film-hanging culture solution according to the mud-water volume ratio of 1:50. The DO concentration of the film-hanging device is controlled at 5 mg / L through the aeration device to accelerate the film-hanging process. The film-hanging process is continuously aerated for 5 days. After the filler forms a yellow biofilm, it indicates that the hanging film is over, and the adsorbed bacteria on the surface of the filler are washed awa...

Embodiment 2

[0057] The difference from the example is that the micro-polluted water body sediment to be treated in this example comes from the Datang Furong Garden in Xi'an City. Due to the low temperature in winter, the ecological floating island only uses a combination of biological fillers, and no plants are planted on the floating bed body. . According to the technical scheme of the invention, in-situ three-dimensional bioremediation is carried out on the slightly polluted water body.

[0058] from image 3 with Figure 4 It can be seen that the concentration of total nitrogen and total phosphorus in the water body continued to increase due to the influence of sediment and pollutants entering the water body with dust, and the concentrations of total nitrogen and total phosphorus in the water body were 4.63 mg / L on the 30th day. and 1.05mg / L. However, in the micro-polluted water body using in-situ three-dimensional bioremediation, the concentrations of total nitrogen and total phosp...

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Abstract

The invention relates to a bio-floating bed and an on-site three-dimensional bio-remediation method for a micro-polluted water body. The bio-floating bed relating in the invention comprises a floating bed body, and a combined biological stuffing is arranged on the floating bed body. Also, plants can be grown on the floating bed body. Efficient microflora obtained by enriching and domesticating bottom sediment of a to-be-treated water body is suspended on the used combined biological stuffing, and has the advantages of being high in biological activity, strong in adaptability and good in treatment effect. The invention further relates to an on-site three-dimensional bio-remediation method for the micro-polluted water body. The method comprises the steps of: covering the bottom sediment of the micro-polluted water body with about 1-2cm coal ash, then spraying the film-suspended biological stuffing on the coal ash by about 1-2cm; then covering the water surface of the micro-polluted water body with the bio-floating bed, wherein the coverage area takes up 10%-20% of the water surface area of the micro-polluted water body. Through the remediation method, the micro-polluted water body can be continuously purified for three to four months.

Description

technical field [0001] The invention relates to the technical field of slightly polluted water body treatment, in particular to a biological floating bed and an in-situ three-dimensional bioremediation method for slightly polluted water bodies. Background technique [0002] With the continuous development of society and the continuous improvement of people's living conditions, people's requirements for the living environment are getting higher and higher. Parks, residential areas, water features in public places, and rivers and lakes in cities and other slightly polluted water bodies with less pollution , and slowly integrated into people's lives, the status of slightly polluted water in modern social life is rising day by day. [0003] However, with the rapid development of industry and agriculture, most urban micro-polluted lakes have suffered varying degrees of pollution, and the degree of eutrophication in urban suburban waters is generally high, such as Hangzhou West La...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34
Inventor 苏俊峰黄廷林周真明叶羡婧郭琳袁杰杨少斐张凯
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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