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Method for comprehensively treating electroplating comprehensive wastewater

A comprehensive and comprehensive electroplating treatment technology, which is applied in special compound water treatment, filtration treatment, precipitation treatment, etc., can solve the problems of difficult treatment, large variation in electroplating wastewater quality, and complex components.

Pending Publication Date: 2021-08-24
苏州融和福天宝环保科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The water quality of electroplating wastewater varies greatly, and the wastewater pollutants produced by each production line are of various types and complex components, so the treatment is difficult

Method used

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  • Method for comprehensively treating electroplating comprehensive wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Collect comprehensive electroplating wastewater, sample and analyze electroplating wastewater, its composition is: suspended matter 200mg / L, COD1500mg / L, ammonia nitrogen 150mg / L, total nitrogen 1000mg / L, total phosphorus 1200mg / L, total copper 800mg / L, total chromium 1200mg / L, total nickel 900mg / L, total zinc 1000mg / L, total iron 200mg / L, total aluminum 800mg / L. The treatment process of comprehensive electroplating wastewater is as follows: figure 1 As shown, the specific steps are as follows:

[0083] 1) Adjust the pH value of the comprehensive electroplating wastewater to 6.5, and stir for 60 minutes. Adding mass concentration is 0.1% PAM, the adding amount of said PAM is 6L / m 3 The comprehensive electroplating wastewater was added with PAM and then reacted for 30 minutes, followed by pressure filtration to obtain the first supernatant and the first solid.

[0084] The pollutant components and contents in the first supernatant are: suspended matter 5mg / L, COD 980m...

Embodiment 2

[0104] Collect comprehensive electroplating wastewater, sample and analyze electroplating wastewater, its composition is: suspended matter 50mg / L, COD3500mg / L, ammonia nitrogen 50mg / L, total nitrogen 100mg / L, total phosphorus 120mg / L, total copper 100mg / L, total chromium 200mg / L, total nickel 300mg / L, total zinc 150mg / L, total iron 1000mg / L, total aluminum 200mg / L, etc. The treatment process of comprehensive electroplating wastewater is as follows: figure 1 As shown, the specific steps are as follows:

[0105] 1) Adjust the pH value of the comprehensive electroplating wastewater to 5.5, and stir for 60 minutes to react. Adding mass concentration is 0.1% PAM, the adding amount of said PAM is 6L / m 3 The comprehensive electroplating wastewater was added with PAM and then reacted for 30 minutes, followed by pressure filtration to obtain the first supernatant and the first solid.

[0106] The content of each pollutant component in the first supernatant is: suspended matter 5mg / L...

Embodiment 3

[0123] Collect comprehensive electroplating wastewater, sample and analyze electroplating wastewater, its composition is: suspended matter 20mg / L, COD 500mg / L, ammonia nitrogen 50mg / L, total nitrogen 100mg / L, total phosphorus 120mg / L, total copper 100mg / L, total Chromium 200mg / L, total nickel 300mg / L, total zinc 150mg / L, total iron 300mg / L, total aluminum 400mg / L, etc. The treatment process of comprehensive electroplating wastewater is as follows: figure 1 As shown, the specific steps are as follows:

[0124] 1) Adjust the pH value of the comprehensive electroplating wastewater to 5.5, and stir for 60 minutes to react. Adding mass concentration is 0.1% PAM, the adding amount of said PAM is 6L / m 3 The comprehensive electroplating wastewater was added with PAM and then reacted for 30 minutes, followed by pressure filtration to obtain the first supernatant and the first solid. The content of each pollutant component in the first supernatant is: suspended matter 5mg / L, COD 400m...

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Abstract

The invention provides a method for comprehensively treating electroplating comprehensive wastewater, and belongs to the technical field of sewage treatment. The electroplating comprehensive wastewater is treated by comprehensively applying various treatment methods such as electrochemical sedimentation treatment, metal enrichment, oxidation, filtration, salt concentration and separation, reverse osmosis and the like, so that enrichment and recovery of valuable metal ions in the comprehensive electroplating wastewater, reduction of mud and deep purification treatment of chemical pollutants are realized; and the recycling of water resources is effectively ensured, and meanwhile, industrial salt, valuable metal products and mud are separated, so that zero discharge of wastewater and recycling of resources are achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for comprehensively treating electroplating comprehensive wastewater. Background technique [0002] The electroplating industry is an industry related to the national economy and people's livelihood, and it is also an industry with high pollution and high water consumption. The water quality of electroplating wastewater is complex. The wastewater contains heavy metal ions such as chromium, zinc, copper, nickel, and cadmium, as well as highly toxic impurities such as acid, alkali, and cyanide. If it is discharged directly without treatment, it will cause great damage to the surrounding water. pollution, thus endangering aquatic plants and animals and the crops, animals and human beings on which they depend. [0003] Although the domestic treatment of electroplating wastewater has a history of more than 50 years, the relevant industry discharge standards were off...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C02F101/16C02F101/20C02F101/22C02F103/16
CPCC02F9/00C02F2001/007C02F1/001C02F1/72C02F1/441C02F1/04C02F1/28C02F1/42C02F1/26C02F1/4672C02F1/78C02F1/725C02F1/32C02F1/302C02F1/305C02F1/38C02F1/44C02F1/4693C02F1/442C02F1/447C02F2103/16C02F2101/16C02F2101/20C02F2101/203C02F2101/22C02F2305/026
Inventor 孙亚辉刘建军年夫久杨洋席丽丽伏志省顾强黄建阳
Owner 苏州融和福天宝环保科技有限责任公司
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