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Heavy metal sewage composite treatment agent and preparation method and application thereof

A composite treatment and heavy metal technology, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. Improve the utilization rate, improve the adsorption efficiency, and the effect of not easy to settle

Active Publication Date: 2019-04-19
常州市新未来化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Crop waste is mainly composed of cellulose substances, with complex structure, good stability, large specific surface area, and the development potential of high-efficiency adsorption. However, the density of the pulverized crop waste is small, and it is easy to cause the problem of high dust degree in the subsequent water treatment construction, and the settling speed is relatively slow after being adsorbed as an adsorbent, the separation is difficult, and the subsequent treatment process is cumbersome.

Method used

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  • Heavy metal sewage composite treatment agent and preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0043] A compound treatment agent for heavy metal sewage, made of the following raw materials in parts by weight: 20 parts of pumpkin vine, 20 parts of xanthic acid modified quartz sand, 4 parts of sodium alginate, 10-30 parts of humic acid, 4 parts of chitosan Sugar, 4 parts calcium thioglycolate, 3 parts calcium chloride.

[0044] Described xanthic acid modified quartz sand is made of quartz sand, aminosilane coupling agent, CS 2 It is prepared according to the weight ratio of 1:0.2:0.14.

[0045] The particle size of the quartz sand is 100-200 mesh.

[0046] Its preparation method comprises the following steps:

[0047] (1) Take 100g of quartz sand passing through a 100-200 mesh sieve, wash with water, soak in 200g of 20% sulfuric acid solution for 24 hours, filter, then wash with water until neutral, dry in an oven at 105°C to constant weight, and store for later use;

[0048] (2) Weigh 50 g of the quartz sand in step (1), disperse it in an ethanol solution to form a tu...

Embodiment 2

[0058] A compound treatment agent for heavy metal sewage, prepared from the following raw materials: 25 parts of pumpkin vine waste, 25 parts of xanthic acid modified quartz sand, 5 parts of sodium alginate, 10-30 parts of humic acid, and 5 parts of chitosan Sugar, 7 parts calcium thioglycolate, 4.5 parts calcium chloride.

[0059] The xanthate-modified quartz sand is prepared from quartz sand, aminosilane coupling agent and sodium ethyl xanthate in a weight ratio of 1:0.2:0.13.

[0060] The particle size of the quartz sand is 100-200 mesh.

[0061] Its preparation method comprises the following steps:

[0062] (1) Take 100 g of quartz sand that has passed through a 100-200 mesh sieve, wash it with water, soak it in 200 g of 30% sulfuric acid solution for 15 hours, filter, then wash it with water until neutral, dry it in an oven at 105° C. to constant weight, and store it for later use;

[0063] (2) Weigh 50 g of the quartz sand in step (1), disperse it in an ethanol solutio...

Embodiment 3

[0073] A compound treatment agent for heavy metal sewage, prepared from the following raw materials: 30 parts of pumpkin vine waste, 30 parts of xanthic acid modified quartz sand, 6 parts of sodium alginate, 10-30 parts of humic acid, 6 parts of chitosan Sugar, 10 parts calcium thioglycolate, 6 parts calcium chloride.

[0074] Described xanthic acid modified quartz sand is made of quartz sand, aminosilane coupling agent, CS 2 It is prepared according to the weight ratio of 1:0.4:0.28.

[0075] The particle size of the quartz sand is 100-200 mesh.

[0076] Its preparation method comprises the following steps:

[0077] (1) Take 100g of quartz sand passing through a 100-200 mesh sieve, wash with water, soak in 200g of 30% sulfuric acid solution for 24h, filter, then wash with water until neutral, dry in an oven at 105°C to constant weight, and store for later use;

[0078] (2) Weigh 50 g of quartz sand in step (1), disperse it in an ethanol solution to form a turbid solution, ...

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Abstract

The invention discloses a heavy metal sewage composite treatment agent and a preparation method and application thereof. The heavy metal sewage composite treatment agent is prepared from 20-30 crop waste, 10-30 parts of humic acid, 20-30 parts of xanthic-acid-modified quartz sand, 4-6 parts of sodium alginate, 4-6 parts of chitosan, 4-10 parts of calcium thioglycolate and 3-6 parts of calcium chloride. The treatment agent contains various heavy metal reactive groups and can achieve simultaneous high-efficiency adsorption of various heavy metals, the sedimentation speed, the treatment efficiency, the stability and the environmental tolerance are high, the problem that the crop waste is difficult to treat is solved, the waste is turned into treasure, and the resource utilization of the cropwaste is achieved. Under suitable conditions, the removal rate of the heavy metals can reach 99%. The heavy metal treatment agent is wide in raw material source and simple in preparation process, andhas good application prospects in the aspect of heavy metal treatment.

Description

technical field [0001] The invention belongs to the technical field of heavy metal sewage treatment, specifically relates to a heavy metal sewage composite treatment agent, and at the same time relates to a preparation method and application of a heavy metal sewage composite treatment agent. Background technique [0002] Unlike other organic pollutants, heavy metals cannot be degraded by chemical or biological methods. Once produced, they will exist in the environment for a long time and accumulate continuously. They can also enter our body through breathing, skin contact, and food chains. Threats to our health, heavy metal sewage is closely related to our life, it will enter our body through various direct or indirect ways, such as heavy metal polluted wastewater entering rivers and lakes, heavy metals will accumulate in aquatic organisms, and Enter the human body through the food chain, and also enter the groundwater through seepage, pollute drinking water, and use sewage ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/103B01J20/22B01J20/24C02F1/281C02F1/285C02F1/286C02F2101/20B01J2220/4806B01J2220/4875B01J2220/4812B01J2220/4825
Inventor 刘华
Owner 常州市新未来化工有限公司
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