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Method for preparing water purifying agent from industrial waste sulfuric acid and waste tool bit

A waste sulfuric acid and water purifying agent technology, applied in chemical instruments and methods, ferric sulfate, water/sewage treatment, etc., can solve problems such as difficult to meet standards, unresolved disposal problems, heavy secondary pollution, etc., and achieve Low treatment cost, excellent water purification effect, and the effect of overcoming waste of resources

Pending Publication Date: 2020-05-12
湖南省环境保护科学研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] my country is also a big country of sulfuric acid production and consumption. The production of sulfuric acid produces about 100 million tons of waste sulfuric acid every year. Waste sulfuric acid may cause great harm to groundwater, soil and the atmosphere, but the problem of disposal has not been well resolved.
At present, general enterprises use lime, calcium carbide slag and slaked lime to neutralize waste sulfuric acid. The pH value of the treated waste liquid can meet the requirements, but the remaining indicators are difficult to meet the standards. The secondary pollution is heavy, and a large amount of sulfuric acid slag will still be produced. Pollutants, and due to the current low price of sulfuric acid, the treatment cost is much higher than the product price

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Industrial waste sulfuric acid (sulfuric acid content is 90%) is filtered through a filter to remove impurities, and then put into waste cutter heads (Fe weight content is 70%) to dissolve. The weight ratio of waste cutter heads to industrial waste sulfuric acid is 1:4, and the reaction is 1 at 80°C. hours, and then filtered through a filter screen to intercept solid substances such as copper, tin, zinc slag and diamond, and pour the filtered hot ferrous sulfate into the polymerization reactor, control the temperature at 60°C, and feed liquid oxygen, the amount of liquid oxygen is 16kg / m 3 , the pressure is 450N, and the water purifying agent can be prepared after 3 hours of reaction, which is used for the treatment and purification of waste water.

[0033] The application case of the prepared water purifying agent for treating wastewater:

[0034] 1. Antimony gold ore dressing wastewater: main pollution indicators arsenic and antimony, the concentration of arsenic in t...

Embodiment 2

[0039] Industrial waste sulfuric acid (sulfuric acid content is 95%) is filtered through a filter to remove impurities, and then put into waste cutter heads (Fe weight content is 80%) to dissolve. The weight ratio of waste cutter heads to industrial waste sulfuric acid is 1:6, and the reaction is 3 at 50°C. hours, and then filtered through a filter screen to intercept solid substances such as copper, tin, zinc slag and diamond, and pour the filtered hot ferrous sulfate into the polymerization reactor, control the temperature at 80°C, and feed liquid oxygen, the amount of liquid oxygen is 18kg / m 3 , the pressure is 400N, and the water purifier can be prepared after 2 hours of reaction, which is used for the treatment and purification of waste water.

[0040] The application case of the prepared water purifying agent for treating wastewater:

[0041] 1. Antimony gold ore dressing wastewater: main pollution indicators arsenic and antimony, the concentration of arsenic in the raw ...

Embodiment 3

[0046]Industrial waste sulfuric acid (sulfuric acid content is 85%) is filtered through a filter to remove impurities, and then put into waste cutter heads (Fe weight content is 75%) to dissolve. The weight ratio of waste cutter heads to industrial waste sulfuric acid is 1:5, and the reaction is 0.5 hours, and then filtered through a filter to intercept solid substances such as copper-tin-zinc slag and diamond, and pour the filtered hot ferrous sulfate into the polymerization reactor, control the temperature at 50°C, and feed liquid oxygen, the amount of liquid oxygen is 15kg / m 3 , the pressure is 500N, and the water purifier can be prepared after 4 hours of reaction, which is used for the treatment and purification of waste water.

[0047] The application case of the prepared water purifying agent for treating wastewater:

[0048] 1. Antimony gold ore dressing wastewater: main pollution indicators arsenic and antimony, the concentration of arsenic in the raw water is 0.5-5 mg...

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Abstract

The invention provides a method for preparing a water purifying agent from industrial waste sulfuric acid and a waste tool bit, and belongs to the field of resource recycling. The method is based on valuable component analysis of the waste tool bit and the industrial waste sulfuric acid; the industrial waste sulfuric acid is used for dissolving iron in the waste tool bit to produce an iron-based water purifying agent, which is used for treating various kinds of wastewater, so that resource utilization of the industrial waste sulfuric acid and the waste tool bit is achieved. According to the invention, a new mode of cooperative treatment of the two kinds of waste is provided, so that resource waste is overcome, waste is turned into wealth, and huge social, economic and environmental benefits are brought into play. The treatment cost is low, and the economic benefit generated by the produced water purifying agent can make up the waste treatment cost; no secondary pollution is generated,and calcium sulfate slag secondary pollutants can be generated by a conventional method.

Description

technical field [0001] The invention relates to the technical field of resource reuse, in particular to a method for preparing a water purifying agent by using industrial waste sulfuric acid and waste cutter heads. Background technique [0002] Discarded cutter heads mainly come from major stone factories, and more than 5,000 tons of waste are generated every year. If this waste is discarded randomly, it will not only cause waste of resources, but also cause pollution to water sources and soil. By recycling waste cutter heads , can produce huge economic and social benefits. [0003] my country is also a big producer and consumer of sulfuric acid. The production of sulfuric acid produces about 100 million tons of waste sulfuric acid every year. Waste sulfuric acid may cause great harm to groundwater, soil and the atmosphere, but the problem of disposal has not been well resolved. At present, general enterprises use lime, calcium carbide slag and slaked lime to neutralize was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/14C02F1/00
CPCC01G49/14C02F1/00
Inventor 许友泽方亚飞成应向徐波张金龙赵媛媛付广义钟宇
Owner 湖南省环境保护科学研究院
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