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Microbial remediation method coupled with easily degradable organic wastewater and heavy metal polluted wastewater

A technology for microbial remediation and organic wastewater, which is applied in water pollutants, water/sludge/sewage treatment, chemical instruments and methods, etc. strong effect

Active Publication Date: 2022-03-04
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of high cost of external carbon source in the existing method, and to provide a microbial remediation method for coupling easily degradable organic wastewater and heavy metal polluted wastewater

Method used

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Examples

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Effect test

specific Embodiment approach 1

[0025] Specific Embodiment 1: In this embodiment, the microbial remediation method for the coupling of easily degradable organic wastewater and heavy metal-contaminated wastewater is as follows:

[0026] 1. Select two types of polluted water bodies: easily degradable organic wastewater and heavy metal polluted wastewater;

[0027] 2. Mix easily degradable organic wastewater and heavy metal polluted wastewater into the water body with BOD content of 20-50mg / L, COD content of 50-100mg / L, heavy metal content of 50-100mg / L, and add sewage treatment bacteria agent, sewage The volume ratio of the treated bacteria agent to the water body to be treated is 1:1000-5000;

[0028] 3. According to the area of ​​the reservoir, according to the ratio of 2-5kg of solid filler per square meter, place the filler at the bottom of the water body obtained in step 2;

[0029] 4. Before the number of microorganisms stops growing, that is, when the OD value of the microorganisms in the logarithmic g...

specific Embodiment approach 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the easily degradable organic wastewater described in step 1 is aquatic product, meat and vegetable fresh food processing wastewater; dessert, beverage, and dairy food manufacturing wastewater; Brewing and fermentation industrial wastewater. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the heavy metal-polluted wastewater described in step 1 is industrial wastewater prepared from coal, metallurgy, electroplating, tanning and catalysts. Others are the same as those in the first or second embodiment.

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Abstract

The invention discloses a microbial remediation method coupled with easily degradable organic waste water and heavy metal polluted waste water, relates to a method for treating heavy metal polluted waste water by using organic waste water and microbial adsorption, and belongs to the technical field of environmental protection. The invention aims to solve the technical problem that the cost of adding an external carbon source is too high in the existing method. This method: mix easily degradable organic wastewater and heavy metal polluted wastewater, add sewage treatment bacteria, place fillers at the bottom of the water body, and place hanging fillers, take out the bottom fillers and hanging fillers of the water body, remove surface microbial residues, until the water body When the chromium content in the medium is less than 1.5mg / L and the lead content is less than 0.5mg / L, it is completed. The method of the invention utilizes the organic nutrients in the organic wastewater, combined with the determination of key indicators, limits the carbon source in the heavy metal wastewater as an added node for the organic wastewater, provides an organic carbon source for the heavy metal adsorbing microorganisms, effectively absorbs the heavy metal, and improves the utilization of the organic wastewater rate, to achieve the purpose of treating waste with waste.

Description

technical field [0001] The invention relates to a method for treating heavy metal polluted wastewater by adopting organic wastewater and microbial adsorption, and belongs to the technical field of environmental protection. Background technique [0002] Heavy metal pollution in water is one of the common pollutions. All countries in the world are committed to seeking sewage treatment technologies with low energy consumption, low cost and low secondary pollution. Heavy metals come from a wide range of sources, mainly from waste water from fuel combustion, mining metallurgy, petroleum refining, and chemical production. The development of industry has led to excessive heavy metals in some waters, causing serious pollution to the ecological environment and serious damage to human health. Microorganisms have certain adaptability to heavy metal ions, and through their own metabolism and metabolites, they convert toxic metal ions into low-toxic or non-toxic precipitates in a redox ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F101/20C02F101/22
CPCC02F3/34C02F2101/20C02F2101/22
Inventor 魏自民卢倩蔡柏岩席北斗赵越骆生曹金香李艳杰刘振勇
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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