Treating method for industrial waste water

A treatment method and technology for industrial wastewater, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. question

Inactive Publication Date: 2015-11-11
ANHUI JIANGWEI PRECISION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a pollutant produced in production, industrial wastewater will inevitably be produced in the actual production process, and the amount produced is relatively large. When industrial wastewater is directly discharged into the water body, it often contains heavy metals and other substances, so that once it is discharged into the water body It has a great i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] After mixing 100g sodium hydroxide, 40g potassium hydroxide, 20g sodium carbonate, 10g magnesium carbonate, 3g activated carbon and 3g nano-calcium oxide, a heavy metal precipitant was prepared; 50g heavy metal precipitant was dropped into 1kg industrial waste water, and placed for 1h; Hydrochloric acid was added to the above treated industrial wastewater until the pH value was 6.8, and then filtered through a filter to obtain treated industrial wastewater A1.

Embodiment 2

[0027] After mixing 100g sodium hydroxide, 60g potassium hydroxide, 30g sodium carbonate, 20g magnesium carbonate, 7g activated carbon and 7g nano-calcium oxide, a heavy metal precipitant was prepared; 70g heavy metal precipitant was dropped into 1kg industrial waste water, and placed for 5h; Hydrochloric acid was added to the above-mentioned treated industrial wastewater until the pH value was 7.5, and then filtered through a filter to obtain treated industrial wastewater A2.

Embodiment 3

[0029] 100g sodium hydroxide, 50g potassium hydroxide, 25g sodium carbonate, 15g magnesium carbonate, 5g activated carbon and 5g nano-calcium oxide were mixed to prepare heavy metal precipitant; 60g heavy metal precipitant was dropped into 1kg industrial waste water and placed for 3h; Hydrochloric acid was added to the above treated industrial wastewater until the pH value was 7.2, and then filtered through a filter to obtain treated industrial wastewater A3.

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PUM

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Abstract

The invention discloses a treating method for industrial waste water. The treating method includes the steps that firstly, a heavy metal precipitating agent is input into industrial waste water and placed for 1-5 hours; secondly, the industrial waste water treated in the first step is filtered through a filtering net, and the treated industrial waste water is obtained, wherein the heavy metal precipitating agent comprises sodium hydroxide, potassium hydroxide, sodium carbonate, magnesium carbonate, activated carbon and nanometer calcium oxide. Relative to the sodium hydroxide of 100 weight parts, the content of the potassium hydroxide is 30-70 weight parts, the content of the sodium carbonate is 10-50 weight parts, the content of the magnesium carbonate is 1-30 weight parts, the content of the activated carbon is 1-10 weight parts, and the content of the nanometer calcium oxide is 1-10 weight parts. By means of the technical scheme, toxic and harmful substances in the treated industrial waste water are greatly reduced, and the water quality is greatly improved.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a treatment method for industrial wastewater. Background technique [0002] As a pollutant produced in production, industrial wastewater will inevitably be produced in the actual production process, and the amount produced is relatively large. When industrial wastewater is directly discharged into the water body, it often contains heavy metals and other substances, so that once it is discharged into the water body Heavy metals have a great impact on water bodies, so that when people use these polluted water sources, heavy metals will be deposited in the body, or even poisoned, and it is also extremely unfavorable to the ecological environment. However, in the prior art, only simple treatment is performed to filter impurities, so that the treated industrial wastewater is still extremely harmful. [0003] Therefore, it is an urgent problem to be solved in the present...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/20
Inventor 纪沿海沈福建万美云褚诗泉
Owner ANHUI JIANGWEI PRECISION IND
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