A kind of river bottom in-situ restoration agent and its preparation method and application

An in-situ remediation agent and sediment technology, applied in chemical instruments and methods, special treatment targets, fixed/solidified sludge treatment, etc., can solve problems such as sediment solidification, achieve fast solidification speed, and maintain the overall ecological environment of the water body Improve and avoid the effect of secondary pollution

Active Publication Date: 2022-01-28
ZHANG ZHOU HALTH VOCATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides an in-situ restoration agent for the river bottom and its preparation method, which realizes the in-situ fixation of the sediment by mixing the polluted sediment with the present invention without destroying the natural circulation of the water body. , It provides a good stable environment for the bottom mud restoration agent, and also creates favorable conditions for the recovery of the river ecosystem, thereby fundamentally eliminating water pollution, to solve the problem of not being able to solidify the inside of the bottom mud in the prior art, and internal pollution The technical problem of solid lock without precipitation

Method used

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  • A kind of river bottom in-situ restoration agent and its preparation method and application
  • A kind of river bottom in-situ restoration agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for preparing a river bottom in situ restoration agent comprises the steps of:

[0049] 1) Weigh 350 parts of ceramsite, 250 parts of fly ash, 20 parts of polyacrylamide, 100 parts of magnesium oxide, and 80 parts of iron filings; put the above powder into a high-speed powder mixer at a speed of 650 rpm, and stir for 60 minutes. Mix evenly to obtain the precursor of the river bottom in-situ restoration agent;

[0050] 2) After mixing 200 parts of the bottom mud material and the precursor of the in-situ repair agent for the river bottom prepared in the previous step, soak and stir in a bacterial culture medium with a pH of 7 to 8 at 30°C for 200 seconds, and mix Evenly; every two days, replace the fresh bacterial culture medium and mix well, after cultivating for 7 days, filter and complete;

[0051] The microbial abundances of photosynthetic bacteria, nitrifying bacteria, denitrifying bacteria, Bacillus subtilis, Pseudomonas, Lactobacillus, sulfur bacteria, an...

Embodiment 2

[0053] A method for preparing a river bottom in situ restoration agent comprises the steps of:

[0054] 1) Weigh 300 parts of ceramsite, 300 parts of fly ash, 30 parts of polyacrylamide, 120 parts of magnesium oxide, and 100 parts of iron filings; put the above powder into a high-speed powder mixer at a speed of 1000 rpm, and stir for 50 minutes. Mix evenly to obtain the precursor of the river bottom in-situ restoration agent.

[0055] 2) After mixing 300 parts of the bottom mud material and the precursor of the river bottom in-situ restoration agent prepared in the previous step, soak and stir in a bacterial culture medium with a pH of 7 to 8 at 35°C for 150 seconds, and mix Evenly; every two days, replace the fresh bacterial culture medium and mix well, after cultivating for 7 days, filter and complete.

Embodiment 3

[0057] In order to verify the improvement effect of the remediation agent prepared in the above examples on the polluted bottom mud, an experiment was carried out on the polluted bottom mud of a river course that often has domestic sewage and industrial wastewater discharged into both sides of a certain place and has a foul smell.

[0058] Get mud sample 1Kg, each get 0.5Kg and place in two large beakers respectively, add appropriate amount of deionized water, stir into slurry, then to one of the beakers, add the ecological restoration agent prepared in Examples 1 and 2 2.5g each, stir quickly to mix evenly, observe the effect of the mud sample after 2 minutes, and the results of sampling and detection indicators after the test are shown in Table 1. Another beaker served as a control group.

[0059] Table 1

[0060]

[0061] The carbon, nitrogen and phosphorus indicators in the sediment before and after the above experiment were detected, and the results of the detection i...

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Abstract

The invention provides a river bottom in-situ restoration agent and a preparation method thereof. The river bottom in-situ restoration agent is prepared by mixing the precursor of the river bottom in-situ restoration agent with sediment materials and culturing them in a bacterial culture medium; The bottom mud material is from the surface sludge at the bottom of the polluted water body to be repaired; the precursor of the river bottom in-situ restoration agent is mixed with ceramsite, fly ash, polyacrylamide, magnesium oxide and iron filings. The restoration agent provided by the present invention can mix the polluted sediment with the present invention on the basis of not destroying the natural circulation of the water body to realize the in-situ fixation of the sediment, which provides a good stable environment for the restoration agent of the sediment and also contributes to the improvement of river ecology. The establishment of the system has created favorable conditions to fundamentally eliminate water body pollution and solve the technical problems in the prior art that the interior of the sediment cannot be solidified and the internal pollutants can be locked without precipitation.

Description

technical field [0001] The invention relates to the technical field of water environment treatment and restoration, in particular to a river bottom in-situ restoration agent and its preparation method and application. Background technique [0002] Our country has a vast territory and many rivers, resulting in many river courses. River courses are the routes through which rivers flow, usually referring to navigable waterways. However, with the acceleration of urbanization, the amount of sewage discharge has increased significantly, and a large amount of sewage and domestic waste are directly discharged into the river. Coupled with rainfall, the runoff, sediment and sewage produced on the surface re-enter the river circulation system, resulting in river pollution. The situation is serious, damaging river biological resources, damaging river water and river environmental quality, and endangering human health. [0003] People try every means to control the pollution of river ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/02C02F101/30C02F101/16C02F101/10
CPCC02F11/008C02F11/02C02F2101/30C02F2101/16C02F2101/105C02F2303/02
Inventor 陈桐君黄仲庆曹林枝林燕燕
Owner ZHANG ZHOU HALTH VOCATIONAL COLLEGE
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