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Method and repair filler for jointly removing heavy metal in water bodies by humin and microorganisms

A technology of microorganisms and heavy metals, applied in biological water/sewage treatment, chemical instruments and methods, water pollutants, etc., can solve the problems of excessive heavy metal ions in crops, pollution and hazards of soil and groundwater sources, and achieve the goal of reducing secondary pollution Effects of risk, location and time flexibility, impact resistance enhancement

Active Publication Date: 2019-05-10
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Using sludge containing heavy metal ions as fertilizer and irrigating farmland with waste water containing heavy metal ions will lead to pollution of soil and groundwater sources, resulting in excessive heavy metal ions in crops; and heavy metals in water will also be enriched in aquatic organisms and eventually pass through the food chain Enter the human body and cause serious harm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0015] Specific embodiment one: In this embodiment, a method for the joint removal of heavy metals in water by humin and microorganisms is carried out in the following steps:

[0016] 1. Mix the liquid medium, microorganisms and humin to make a repair solution;

[0017] 2. Soak the filler in the repair solution, then take it out and put it into the water body containing heavy metals, so as to realize the removal of heavy metals in the water body;

[0018] Wherein, the microorganism in step 1 is a bacterial strain or a bacterial group capable of converting heavy metal ions into a low-toxic or non-toxic state;

[0019] The liquid medium is a medium suitable for the growth of microorganisms in step one;

[0020] The restoration solution is prepared according to the ratio of 20±2ml liquid culture medium, 5±0.5ml microorganism and 10±1mg humin.

specific Embodiment approach 2

[0021] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the concentration of the microorganisms is 10 6 ~10 8 cfu / ml. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0022] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: described microorganism is liquid composite microbial inoculum 1 (liquid composite microbial inoculum 1 is made of Aspergillus niger fungus and Pseudomonas by 1: The volume ratio of 1 is mixed, and the concentration of Aspergillus niger fungal liquid is 10 6 ~10 8 cfu / ml, the concentration of Pseudomonas bacteria liquid is 10 6 ~10 8 cfu / ml), Bacillus cereus, Bacillus licheniformis, Bacillus thuringiensis and / or Pseudomonas nitroreducens. Other steps and parameters are the same as those in Embodiment 1 or 2.

[0023] The microorganism described in this embodiment can be a single strain or a composite microbial agent of multiple strains.

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PUM

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Abstract

The invention discloses a method for jointly removing heavy metal in water bodies by humin and microorganisms, and provides a method and a repair filler for excellently removing heavy metal in water bodies. The method and the repair fillers are simple and can be reused. The method includes firstly, mixing liquid culture media, microorganisms and humin with one another to obtain repair liquid; secondly, placing fillers in the repair liquid, soaking the fillers in the repair liquid, then taking out the fillers, and placing the fillers in the water bodies with the heavy metal so as to remove theheavy metal in the water bodies. The repair filler comprises the liquid culture media, the microorganisms and the humin. The method and the repair filler have the advantages that the method is flexible in placing location and time when the heavy metal contaminated water bodies are repaired, the placing locations and time can be changed at any time, the method and the repair filler can be used forrepairing the dynamic water bodies, and the method is simple and is low in cost; the fillers can be reused after the repair filler is eluted, eluant is convenient to collect, and accordingly risks ofsecondary pollution further can be reduced.

Description

technical field [0001] The invention relates to a method for removing heavy metals in water to repair fillers. Background technique [0002] The rapid development of industrialization in recent years has made environmental problems, especially water pollution, increasingly serious. Among them, heavy metal pollution is one of the most important factors causing water pollution. Heavy metal pollution in water refers to the pollution of water caused by pollutants containing heavy metal ions entering the water. Heavy metal wastewater (containing chromium, cadmium, copper, mercury, nickel, zinc and other heavy metal ions) produced in industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation is the most serious water pollution and the most harmful industry to humans. One of the wastewater. [0003] Using sludge containing heavy metal ions as fertilizer and irrigating farmland with waste water conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/20
Inventor 赵越张旭魏自民高昕童解新宇张闯杨红宇
Owner NORTHEAST AGRICULTURAL UNIVERSITY