Steel and iron waste water treatment agent and method using same to treat waste water

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

Active Publication Date: 2018-11-09
怀宁县恒源再生科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Steel and iron waste water treatment agent and method using same to treat waste water
  • Steel and iron waste water treatment agent and method using same to treat waste water

Examples

Experimental program
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Effect test

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 steel and iron waste water treatment agent and a method using the same to treat the waste water, which relates to the technical field of waste water treatment. The waste watertreatment agent is prepared from the following raw materials in parts by weight: 20 to 30 parts of polyacrylamide, 4 to 6 parts of ferrous sulfate, 12 to 16 parts of polymeric aluminum chloride, 4 to8 parts of zeolite, 2 to 4 parts of cobalt acetate, and 1 to 2 parts of alumina powder. The method using the treatment agent to treat the waste water comprises the following steps: pretreating the steel and iron waste water, catalyzing, precipitating, treating the precipitates by using the treatment agent, distilling, purifying and the like. By adopting the steel and iron waste water treatment agent and the method using the same to treat the waste water, the weaknesses of the prior art are overcome, the steel and iron waste water treatment efficiency can be improved, the purification degree of the waste water is improved, on the premise of ensuring no pollution, the recyclable water is obtained, the economic loss in the iron and steel production process can be reduced, the environment-friendly production principle can be satisfied, and the waste of water resource can be reduced.

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 Applications(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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