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Bottom mud repairing agent for mud-water interface aerobic layer of polluted bottom mud as well as preparation and application of the bottom mud repairing agent

A technology for polluting sediment and aerobic layers, applied in the field of environmental remediation, can solve the problems of low biochemical reaction efficiency, easy loss, lack of pertinence of sediment remediation agents, etc., and achieves the effects of low cost, promotion of growth and reproduction, and simple operation.

Pending Publication Date: 2022-01-25
SHANGHAI EMPEROR OF CLEANING HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of lack of pertinence, easy loss, and low biochemical reaction efficiency of the bottom mud restoration agent, the purpose of the present invention is to provide a bottom mud restoration agent for the aerobic layer of the contaminated bottom mud mud-water interface and its preparation and application method

Method used

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  • Bottom mud repairing agent for mud-water interface aerobic layer of polluted bottom mud as well as preparation and application of the bottom mud repairing agent
  • Bottom mud repairing agent for mud-water interface aerobic layer of polluted bottom mud as well as preparation and application of the bottom mud repairing agent
  • Bottom mud repairing agent for mud-water interface aerobic layer of polluted bottom mud as well as preparation and application of the bottom mud repairing agent

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preparation example Construction

[0055] Second object of the present invention is to provide the preparation method of the bottom mud restoration agent of polluted bottom mud mud-water interface aerobic layer, comprising the following steps:

[0056] (1) Preparation of preparation A: mix the microbial agent, bio-growth-promoting agent, weighting agent, binder, and adsorbent in proportion, then stir, and use a tablet press to compress the product with a diameter less than 100kN under a pressure of more than 100kN. For 10mm tablets, the specific gravity of the tablet is 1-1.2g / ml.

[0057] (2) Preparation of preparation B: Mix the biochemical reaction electron acceptor, weighting agent, binder, and adsorbent in proportion, then stir, and use a tablet machine to compress it into a tablet with a diameter of less than 10mm under a pressure of more than 100kN. tablet, the specific gravity of the tablet is 1-1.2g / ml.

[0058] The third object of the present invention is to provide an application method of the botto...

Embodiment 1

[0062] This embodiment provides a bottom mud restoration agent for the aerobic layer of the polluted bottom mud mud-water interface.

[0063] A plexiglass reactor with a diameter of 200mm and a height of 600mm was made, and the sediment of a black and odorous river in Guangdong was injected into the reactor. The thickness of the sediment was 200mm. After standing for 3 days, the sulfide content (characterized by AVS), oxidation-reduction potential (ORP), and organic matter content (characterized by TOC) in the bottom mud were tested, and then the treatment was started. The reactors were divided into treatment group 1, treatment group 2, Treatment group 3 and control group, treatment group 1 was dosed with sediment A preparation, treatment group 2 was dosed with sediment B preparation, treatment group 3 was dosed with sediment A preparation and B preparation, and the control group was not added.

[0064] The bottom mud restoration agent includes A preparation and B preparation....

Embodiment 2

[0082] This embodiment provides a bottom mud restoration agent for the aerobic layer of the polluted bottom mud mud-water interface.

[0083] A plexiglass reactor with a diameter of 200 mm and a height of 600 mm was made, and the bottom mud of a lake in Guangdong was injected into the reactor with a thickness of 200 mm. After standing for 3 days, the sulfide content (characterized by AVS), oxidation-reduction potential (ORP), and organic matter content (characterized by TOC) in the bottom mud were tested, and then the treatment was started. The reactor was divided into treatment group 1, treatment group 2, Treatment group 3 and control group, treatment group 1 was dosed with preparation A, treatment group 2 was dosed with preparation B, treatment group 3 was dosed with the mixed reagent of preparation A and preparation B, and the control group was not dosed with medicine.

[0084] The bottom mud restoration agent includes A preparation and B preparation.

[0085] Each compone...

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Abstract

The invention relates to the technical field of environmental remediation, in particular to a bottom mud repairing agent for a mud-water interface aerobic layer of polluted bottom mud as well as preparation and application thereof. The bottom mud repairing agent comprises a microbial agent, a biological growth promoting agent, a biochemical reaction electron acceptor, a counterweight agent, a binder and an adsorbent, the raw materials are finally prepared into a preparation A and a preparation B, and then the two repairing agent preparations are mixed to obtain the bottom mud repairing agent. Through a direct sowing mode and an aerobic layer covering the surface of the bottom mud SWI, mineralized organic pollutants are effectively degraded, the oxidation-reduction potential of a mud-water interface is rapidly improved, ammonia nitrogen and total phosphorus are inhibited from being released to an overlying water body, the thickness of the bottom mud SWI aerobic layer is improved, dissolved oxygen can be continuously provided for life activities of microorganisms, the thickness of the bottom mud is reduced, the micro-ecological environment of the polluted bottom mud is improved, the lasting self-cleaning capability of the polluted bottom mud is enhanced, and the water quality is kept.

Description

technical field [0001] The invention relates to the technical field of environmental restoration, in particular to a bottom mud restoration agent for an aerobic layer at the mud-water interface of polluted bottom mud and its preparation and application. Background technique [0002] Sediment is an important endogenous pollution of the river. It continuously releases pollutants into the water body, causing water quality to deteriorate. Under anaerobic conditions, denitrification and methanation of the sediment produce a large amount of gas, which directly causes the sediment to float up, and the water body is black and smelly. Therefore, the sediment Restoration is an important part of the ecological restoration of urban rivers and lakes, especially in urban river regulation, after dredging, sewage interception, bank revetment and other engineering measures are completed, sediment restoration is an important part of fundamentally solving river and lake pollution and rapidly im...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/02C02F101/30C02F101/16
CPCC02F3/34C02F3/02C02F2103/007C02F2101/30C02F2101/16C02F2305/06Y02W10/10
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
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