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A kind of iron and steel wastewater treatment agent and the method for using the treatment agent to treat wastewater

A technology of wastewater treatment agent and treatment method, which is applied in metallurgical wastewater treatment, multi-stage water treatment, water/sewage treatment, etc., to achieve the effect of increasing the sedimentation rate

Active Publication Date: 2021-06-08
怀宁县恒源再生科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a treatment agent for iron and steel wastewater and a method for treating wastewater using the treatment agent, which improves the efficiency of the treatment of iron and steel wastewater, enhances the degree of purification of the wastewater, and treats the wastewater without pollution. Obtain recyclable water, reduce the economic loss in the steel production process, and at the same time comply with the principle of environmental protection production, and reduce the waste of water resources

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  • A kind of iron and steel wastewater treatment agent and the method for using the treatment agent to treat wastewater
  • A kind of iron and steel wastewater treatment agent and the method for using the treatment agent to treat wastewater

Examples

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Embodiment 1

[0022] A steel wastewater treatment agent, the wastewater treatment agent is made of the following raw materials in parts by weight: 20 parts of polyacrylamide, 4 parts of ferrous sulfate, 12 parts of polyaluminium chloride, 4 parts of zeolite, 2 parts of cobalt acetate, alum 1 part of soil powder.

[0023] A treatment method for iron and steel wastewater, said treatment method comprising the following steps:

[0024] (1) Iron and steel wastewater pretreatment: the iron and steel wastewater is first passed through the coarse particle separator equipment to remove the suspended impurities of large particles, and then the wastewater except for large particles is passed into the sedimentation tank;

[0025] (2) Catalytic precipitation: add ferric hydroxide to the iron and steel wastewater in the sedimentation tank, then pass nitrogen monoxide into the tank for catalytic oxidation, let it stand for a period of time, filter and precipitate, and the wastewater continues to precipita...

Embodiment 2

[0030] A steel wastewater treatment agent, the wastewater treatment agent is made of the following raw materials in parts by weight: 30 parts of polyacrylamide, 6 parts of ferrous sulfate, 16 parts of polyaluminum chloride, 8 parts of zeolite, 4 parts of cobalt acetate, alum 2 parts of soil powder.

[0031] A treatment method for iron and steel wastewater, said treatment method comprising the following steps:

[0032] (1) Iron and steel wastewater pretreatment: the iron and steel wastewater is first passed through the coarse particle separator equipment to remove the suspended impurities of large particles, and then the wastewater except for large particles is passed into the sedimentation tank;

[0033] (2) Catalytic precipitation: add ferric hydroxide to the iron and steel wastewater in the sedimentation tank, then pass nitrogen monoxide into the tank for catalytic oxidation, let it stand for a period of time, filter and precipitate, and the wastewater continues to precipita...

Embodiment 3

[0038] A steel wastewater treatment agent, the wastewater treatment agent is made of the following raw materials in parts by weight: 25 parts of polyacrylamide, 5 parts of ferrous sulfate, 14 parts of polyaluminum chloride, 6 parts of zeolite, 3 parts of cobalt acetate, alum 1.5 parts of soil powder.

[0039] A treatment method for iron and steel wastewater, said treatment method comprising the following steps:

[0040] (1) Iron and steel wastewater pretreatment: the iron and steel wastewater is first passed through the coarse particle separator equipment to remove the suspended impurities of large particles, and then the wastewater except for large particles is passed into the sedimentation tank;

[0041] (2) Catalytic precipitation: add ferric hydroxide to the iron and steel wastewater in the sedimentation tank, then pass nitrogen monoxide into the tank for catalytic oxidation, let it stand for a period of time, filter and precipitate, and the wastewater continues to precipi...

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Abstract

The invention provides a treatment agent for iron and steel wastewater and a method for treating wastewater using the treatment agent, and relates to the technical field of wastewater treatment. The wastewater treatment agent is made of the following raw materials in parts by weight: 20-30 parts of polyacrylamide, 4-6 parts of ferrous sulfate, 12-16 parts of polyaluminum chloride, 4-8 parts of zeolite, 2-4 parts of cobalt acetate 1-2 parts of bauxite powder. The method for using the treatment agent to treat wastewater includes the steps of pretreatment of iron and steel wastewater, catalytic precipitation, treatment agent treatment of precipitation, distillation and purification, and the like. The present invention overcomes the deficiencies of the prior art, improves the efficiency of iron and steel wastewater treatment, enhances the degree of purification of wastewater, and obtains recyclable water under the condition of ensuring no pollution, reducing the economic cost in the iron and steel production process. Loss, while complying with the principles of environmentally friendly production, reducing waste of water resources.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an iron and steel wastewater treatment agent and a method for using the treatment agent to treat wastewater. Background technique [0002] The production process of the modern iron and steel industry includes material selection, iron, steelmaking (continuous casting), steel rolling and other production processes. Iron and steel industry wastewater mainly comes from production process water, equipment and product cooling water, flue gas washing and site flushing, etc., but 70% of the wastewater still comes from cooling water. Indirect cooling water is only polluted by heat during use, and can be reused after cooling; direct cooling water contains pollutants due to direct contact with product materials, and can be reused or cascaded after being treated. How to treat and recycle the wastewater in the process of iron and steel smelting, so as to facilitate recycling and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/56C02F9/10C02F103/16C02F101/14C02F101/10
CPCC02F1/001C02F1/04C02F1/5236C02F1/56C02F1/66C02F1/725C02F9/00C02F2001/007C02F2101/103C02F2101/14C02F2103/16C02F2301/08
Inventor 樊双七
Owner 怀宁县恒源再生科技有限公司
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