In-situ restoration method for polluted bottom sludge of black and odorous water body based on pelelith

A technology for in-situ restoration of black and odorous water bodies, applied in water pollutants, water/sludge/sewage treatment, sludge detoxification, etc. Achieve the effect of inhibiting the generation of odorous substances, no secondary pollution, and strong adsorption capacity

Inactive Publication Date: 2018-06-01
GUANGZHOU EP ENVIROMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Modified clay, zero-valent iron and other modified materials are used as covering materials, which have a good control effect on nitrogen, phosphorus and organic matter in sediment, but these materials are often small in particle size and are not easy to be used in complex hydrological conditions. Otherwise, it is easy to pollute the overlying water

Method used

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  • In-situ restoration method for polluted bottom sludge of black and odorous water body based on pelelith
  • In-situ restoration method for polluted bottom sludge of black and odorous water body based on pelelith

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for in-situ remediation of black and odorous water contaminated sediment based on volcanic rocks, comprising the following steps:

[0029] S1: Immerse volcanic rocks with a radius of 0.5cm~4cm into the aerobic tank of urban domestic sewage for biological loading and film formation. The sludge concentration in the aerobic tank is 3.0g / L. The aerobic tank mainly contains Acinetobacter, Nitrobacter, Nitrosospira, Nitrosomonas, Alcaligenes, Pseudomonas, Stenobacterium, Pleuromonas, Pyromorpha minor, Sulfur bacteria, etc., the bioburden time is 15 days;

[0030] S2: Put the volcanic rock that has completed the biological loading and film formation into the bottom mud tank of the black and odorous water body. The size of the tank is 100x100x100cm, the mud depth is 20cm, the water depth is 60cm, and the addition amount is 0.4kg per square meter;

[0031] S3: Perform intermittent aeration at 30 cm above the bottom mud of the black and odorous water body to ensure that ...

Embodiment 2

[0034] A method for in-situ remediation of black and odorous water contaminated sediment based on volcanic rocks, comprising the following steps:

[0035] S1: Immerse volcanic rocks with a radius of 0..5cm~4cm into the aerobic pool of urban domestic sewage for biological loading and film formation. The sludge concentration in the aerobic pool is 4.0g / L, and the aerobic pool mainly contains immobile Bacillus, Nitrobacter, Nitrosospira, Nitrosomonas, Alcaligenes, Pseudomonas, Stenobacterium, Pleuromonas, Pyromorpha minor, Sulfur bacteria, etc., the bioburden time is 15 days;

[0036] S2: Put the volcanic rocks that have completed the biological loading and film formation into the bottom mud tank of the black and odorous water body. The size of the tank is 100x100x100cm, the mud depth is 20cm, the water depth is 60cm, and the addition amount is 2kg per square meter;

[0037] S3: Aerate 30cm above the bottom mud of the black and odorous water body to ensure that the dissolved oxyg...

Embodiment 3

[0040] S1: Immerse volcanic rocks with a radius of 0.5cm~4cm into the aerobic tank of urban domestic sewage for biological loading and film formation. The sludge concentration in the aerobic tank is 2.5g / L. The aerobic tank mainly contains Acinetobacter, Nitrobacter, Nitrosospirillum, Nitrosomonas, Alcaligenes, Pseudomonas, Stenobacterium, Trichomonas, Pyromorpha microbes, Sulfur bacteria, etc., the bioburden time is 20 days;

[0041] S2: Put the volcanic rock that has completed the biological loading and film formation into the bottom mud tank of the black and odorous water body. The size of the tank is 100x100x100cm, the mud depth is 20cm, and the water depth is 60cm. The amount of addition is 0.1kg per square meter;

[0042] S3: Perform intermittent aeration at 30 cm above the bottom mud of the black and odorous water body to ensure that the dissolved oxygen concentration in the water body is ≥ 2 mg / L, and aerate for 8 hours a day.

[0043] After running this repair method ...

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Abstract

The invention discloses an in-situ restoration method for polluted bottom sludge of a black and odorous water body based on pelelith. The in-situ restoration method for the polluted bottom sludge of the black and odorous water body based on the pelelith comprises the following steps of S1, soaking the pelelith into activated sludge to perform microorganism loading and film hanging, wherein the microorganism loading and film hanging period is greater than or equal to 15 days; S2, feeding the pelelith after microorganism loading and film hanging into the bottom sludge of the black and odorous water body to perform in-situ restoration, wherein the feeding amount is 0.1 to 2kg/cm<2>; S3, aerating above the bottom sludge of the black and odorous water body, wherein the concentration of dissolved oxygen in the water body is greater than or equal to 2mg/L. The in-situ restoration method has the advantages that after the natural peletith is subject to the microorganism loading and film hanging, the ammonia nitrogen in the bottom sludge of the black and odorous water body can be well removed, the deposited bottom sludge of the black and odorous water body can be treated, the generation of odorous substances is inhibited, and the water body and the bottom sludge are free from obvious smelly odor; the used materials are natural and are easy to obtain, the cost is low, the operation is simple, the stability is good, the application range is broad, the secondary pollution is avoided, and the like.

Description

technical field [0001] The invention relates to the technical field of remediation of water body polluted bottom mud, in particular to an in-situ repair method for black and odorous water body polluted bottom mud based on volcanic stones. Background technique [0002] In recent years, with the continuous development of my country's economy and society, water pollution control and treatment measures are relatively lagging behind, and the discharge of sewage and wastewater continues to increase, resulting in serious pollution of receiving water bodies. The concentration of chemical oxygen demand (COD), nitrogen and phosphorus and other pollutants in polluted water bodies exceeds the standard, which can easily lead to eutrophication of water bodies, and even seasonal or year-round black and odorous water bodies. [0003] Black and odorous water pollution is mainly divided into exogenous and endogenous pollution. Endogenous pollution mainly comes from sediment, which is one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C02F11/00C02F101/30
CPCC02F11/004C02F11/02C02F2101/30C02F2303/02C02F2303/04C02F2303/06
Inventor 李锐敬阳重阳曹姝文王文静刘小平许嘉辉曾华洁
Owner GUANGZHOU EP ENVIROMENTAL ENG
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