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Environmental functional material applied to electroplating wastewater treatment

A technology for functional materials and electroplating wastewater, applied in the fields of metallurgical wastewater treatment, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of restricting the popularization and use of recapture agents, high treatment costs, and achieving difficulty in secondary pollution, Simple equipment and convenient operation

Inactive Publication Date: 2010-02-17
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the processing cost is high, which limits the promotion and use of recapture agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 20% modified diatomaceous earth, 40% humic acid and 40% chitosan into the mixer according to the above ratio, and mix for 2 hours to obtain a multifunctional environment-friendly material that can be applied to electroplating wastewater treatment.

Embodiment 2

[0018] 30% attapulgite, 10% kaolin, 40% humic acid and 20% chitosan were added into the mixer according to the above proportions, and mixed for 3 hours to obtain a multifunctional environment-friendly material that can be applied to electroplating wastewater treatment.

Embodiment 3

[0020] 50% modified diatomite, 5% bentonite, 5% attapulgite, 30% humic acid and 10% chitosan were added to the mixer according to the above ratio and mixed for 4 hours to obtain Multifunctional environment-friendly material for handling.

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Abstract

The invention discloses an environmental functional material applied to electroplating wastewater treatment; all components are as follows by mass percentage; kieselguhr, modified purified diatomite,bentonite, modified purified bentonite, attapulgite, modified purified attapulgite, kaoline and / or 20-80 percent of modified purified kaoline, 10-40 percent of humic acid and 10-40 percent of chitosan. The material has convenient usage, good treatment effect, and large and dense formed floccules, shortens settling time, and is easy to lead heavy metal ions, COD, ammonia-N, phosphorus, chromaticity and other indexes in wastewater to synchronously achieve discharge standard regulated nationally, the produced residue can recycle heavy metal, and secondary pollution is not easy to generate. Thematerial is suitable for treating wastewater in industries such as circuit boards, electro-plating, metal finishing, photographic film manufacturing, coal plants, municipal or industry waste incineration, battery production and the like.

Description

technical field [0001] The invention relates to a technology for removing, purifying or trapping heavy metal ions in water, in particular to a multifunctional environment-friendly material applied to the treatment of electroplating wastewater. Background technique [0002] Industries often produce wastewater containing chromium, nickel, copper, cadmium, lead, zinc, aluminum, gold, silver, mercury and other metal ions. Concentration and long-term toxic side effects and other characteristics, if not properly handled, will cause serious pollution to the environment. [0003] The traditional pH adjustment precipitation method treats wastewater containing heavy metal ions, that is, by adding alkaline chemicals such as sodium hydroxide, sodium carbonate, and lime, the pH value of the wastewater is adjusted to about 11, and the corresponding heavy metal hydroxide precipitates are formed. Remove heavy metal ions. For the pH adjustment precipitation method, the pH value needs to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/42C02F1/52C02F1/62C02F1/64C02F101/20C02F101/22C02F103/16
Inventor 王风贺王力友车呈芳
Owner NANJING NORMAL UNIVERSITY
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