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Treating reagent applicable to high-salt pesticide wastewater and preparation method thereof

A technology for pesticide wastewater and chemical treatment, which is applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of non-compliance with environmental protection requirements, complex pollutant components, polluted water bodies, etc. problems, to achieve the effect of excellent coagulation ability, large vitriolization and easy handling, and high removal rate

Inactive Publication Date: 2016-12-21
FOREVERWAY ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) The composition of pollutants is very complex: the production of pesticides involves many organic chemical reactions, and many wastewaters contain not only raw material components, but also many by-products and intermediate products
(3) High toxicity, containing compounds that are difficult to be degraded by microorganisms
[0004] In the industry, flocculants are often used to treat many high-salt and highly toxic wastewater. Enhanced coagulation is an effective method to remove organic pollutants, but many organic polymer flocculants are synthetic high polymers with high toxicity. Therefore, this type The flocculant will pollute the water body and does not meet the requirements of environmental protection

Method used

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  • Treating reagent applicable to high-salt pesticide wastewater and preparation method thereof

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Effect test

Embodiment 1

[0021] A treatment agent suitable for high-salt pesticide wastewater proposed by the present invention includes the following raw materials in parts by weight: 75 parts of rice straw, 52 parts of attapulgite raw ore, 88 parts of 1mol / L dilute hydrochloric acid, 75 parts of aluminum sulfate, and chitosan 10 servings.

[0022] Its preparation method comprises the following steps:

[0023] S1. Drying the rice straw with the specific gravity at 74°C, crushing it and passing it through a 20-mesh sieve to obtain material A;

[0024] S2. Fill material A into a 30mL ceramic crucible, compact it slightly after filling, put the lid on and place in a muffle furnace for carbonization at 530°C for 3.4h, then cool naturally;

[0025] S3. After the material in S2 is naturally cooled to room temperature, take it out and grind it, pass it through a 20-mesh sieve, and set aside;

[0026] S4, take the attapulgite raw ore of the specific gravity and carry out air-dried crushing and grinding, an...

Embodiment 2

[0031] A treatment agent suitable for high-salt pesticide wastewater proposed by the present invention includes the following raw materials in parts by weight: 78 parts of rice straw, 54 parts of attapulgite raw ore, 92 parts of 1mol / L dilute hydrochloric acid, 80 parts of aluminum sulfate, and chitosan 12 servings.

[0032] Its preparation method comprises the following steps:

[0033] S1. Dry the rice straw with the specific gravity at 85° C., crush it and pass it through a 20-mesh sieve to obtain material A;

[0034] S2. Fill material A into a 30mL ceramic crucible, compact it slightly after filling, put the lid on and place it in a muffle furnace for carbonization at 540°C for 3.6h, then cool naturally;

[0035] S3. After the material in S2 is naturally cooled to room temperature, take it out and grind it, pass it through a 20-mesh sieve, and set aside;

[0036] S4, take the attapulgite raw ore of the specific gravity and carry out air-dried crushing and grinding, and th...

Embodiment 3

[0041] A treatment agent suitable for high-salt pesticide wastewater proposed by the present invention includes the following raw materials in parts by weight: 65 parts of rice straw, 50 parts of attapulgite raw ore, 84 parts of 1mol / L dilute hydrochloric acid, 70 parts of aluminum sulfate, and chitosan 9 servings.

[0042] Its preparation method comprises the following steps:

[0043] S1. Dry the rice straw with the specific gravity at 80° C., crush it and pass it through a 20-mesh sieve to obtain material A;

[0044] S2. Fill material A into a 30mL ceramic crucible, compact it slightly after filling, put the lid on and place it in a muffle furnace for carbonization at 550°C for 3.2h, then cool naturally;

[0045] S3. After the material in S2 is naturally cooled to room temperature, take it out and grind it, pass it through a 20-mesh sieve, and set aside;

[0046] S4, take the attapulgite raw ore of the specific gravity and carry out air-dried crushing and grinding, and the...

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PUM

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Abstract

The invention discloses a treating reagent applicable to high-salt pesticide wastewater. The treating reagent comprises the following raw materials by weight: 50 to 90 parts of rice straw, 50 to 60 parts of raw attapulgite ore, 80 to 100 parts of dilute hydrochloric acid, 70 to 90 parts of aluminum sulfate and 8 to 15 parts of chitosan. The treating reagent provided by the invention combines biomass charcoal, modified attapulgite and chitosan for treatment of the wastewater, so recycling of agricultural waste is realized, and a novel environment-friendly effective flocculating agent is provided for treatment of industrial wastewater; the flocculating agent prepared in the invention has excellent coacervation capability, enables the concentration of high-salt substances and high-toxicity organic matters in the pesticide wastewater to be obviously decreased and effectively overcomes the disadvantages of great usage amounts of inorganic flocculating agents and high toxicity of organic flocculating agents in conventional wastewater treatment processes; and the treating reagent applicable to high-salt pesticide wastewater is worth promotion.

Description

technical field [0001] The invention belongs to the field of high-salt wastewater treatment, and in particular relates to a treatment agent suitable for high-salt pesticide wastewater and a preparation method thereof. Background technique [0002] Pesticide production process will produce a large amount of wastewater. The main characteristics of this type of wastewater are: (1) High mass concentration of organic matter: usually the COD of pesticide wastewater before treatment is between several thousand mg / L to tens of thousands mg / L. (2) The composition of pollutants is very complex: the production of pesticides involves many organic chemical reactions, and many wastewaters contain not only raw material components, but also many by-products and intermediate products. (3) It is highly toxic and contains compounds that are difficult to degrade by microorganisms. At the same time, in addition to pesticides and intermediates, some wastewater also contains toxic substances such...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56C02F101/22
CPCC02F1/5245C02F1/5263C02F1/56C02F2101/22
Inventor 许大为赵莉
Owner FOREVERWAY ENVIRONMENTAL SCI & TECH CO LTD
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