Electroplating wastewater comprehensive treating agent

A comprehensive treatment agent and electroplating wastewater technology, which is applied in metallurgical wastewater treatment, water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of lack of targeted effect and insignificant cyanide effect, and achieve simple and low-cost treatment methods. Inexpensive, cost-effective results

Active Publication Date: 2015-04-29
深圳金湖电镀有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It lacks targeted effect on complexes and chelates, and has no obvious effect on cyanide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A comprehensive treatment agent for electroplating wastewater, which is composed of the following components in terms of mass percentage: selected grade calcium oxide 51%, activated alumina 9%, potassium permanganate 18%, potassium permanganate 13%, insoluble starch yellow Ortho ester 2%, selected grade active diatomite 5%, basic catalyst Li + / SiO 2 2%.

[0019] Take 1L of wastewater from the electroplating wastewater treatment station in a beaker. The raw water indicators of the comprehensive electroplating wastewater are pH 5.3, COD 1650mg / L, Cr 6+ 3.68mg / L, Ni 2+ 87.5mg / L, Cu 2+ 32.22mg / L, CN 19.15mg / L, Zn 2+ 212mg / L, Z-P 50.04mg / L, NH 3 -N 47.92mg / L, add 3g of the electroplating wastewater treatment agent, react for 40 minutes, after the action of the treatment agent, the upper liquid in the wastewater is completely clarified, and the measured results of the upper liquid are: pH 8.7, COD 78.4mg / L , Cr 6+ 0.004mg / L, Ni 2+ 0.23mg / L, Cu 2+ 0.05mg / L, CN...

Embodiment 2

[0022] A comprehensive treatment agent for electroplating wastewater, which is composed of the following components in terms of mass percentage: 58% of selected grade calcium oxide, 5% of activated alumina, 10% of potassium persulfate, 6% of potassium ferrate, and insoluble starch xanthogen Ester 8%, selected grade active diatomaceous earth 12%, K + / SiO 2 1%.

[0023] Take 1L of comprehensive electroplating wastewater in a beaker. The raw water indicators of the comprehensive electroplating wastewater are: pH5.3, COD 1730mg / L, Cr 6+ 4.63mg / L, Ni 2+ 60mg / L, Cu 2+ 36.7mg / L, CN 16mg / L, Zn 2+ 242mg / L, Z-P 53.9mg / L, NH 3 -N 42mg / L, add 3g of the electroplating wastewater treatment agent, and react for 40 minutes. After the treatment agent is applied, the supernatant in the wastewater is completely clarified. The measured results of the supernatant are: pH8.2, COD 44.3mg / L , Cr 6+ 0.004mg / L, Ni 2+ 0.14mg / L, Cu 2+ 0.07mg / L, CN 0.004mg / L, Zn 2+ 0.023mg / L, Z-P 0.183m...

Embodiment 3

[0025] A comprehensive treatment agent for electroplating wastewater, which is composed of the following components in terms of mass percentage: 70% of selected grade calcium oxide, 5% of activated alumina, 10% of sodium persulfate, 5% of potassium ferrate, and insoluble starch xanthate Ester 2%, selected grade active diatomaceous earth 5%, K + / SiO 2 3%.

[0026] Take 1L of comprehensive electroplating wastewater in a beaker. The raw water indicators of the comprehensive electroplating wastewater are: pH4.9, COD 1902mg / L, Cr 6+ 4.2mg / L, Ni 2+ 79mg / L, Cu 2+ 38.4mg / L, CN 25mg / L, Zn 2+ 189mg / L, Z-P 47.46mg / L, NH 3 -N 39.51mg / L, add 3g of the electroplating wastewater treatment agent, react for 40 minutes, after the action of the treatment agent, the upper liquid in the wastewater is completely clarified, and the measured results of the upper liquid are: pH7.8, COD 78.4mg / L, Cr 6+ 0.004mg / L, Ni 2+ 0.23mg / L, Cu 2+ 0.05mg / L, CN 0.012mg / L, Zn 2+ 0.05mg / L, Z-P 0.17...

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PUM

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Abstract

The invention relates to a wastewater treating agent, particularly an electroplating wastewater comprehensive treating agent. The electroplating wastewater comprehensive treating agent is composed of the following components in percentage by mass: 50-70% of calcium oxide, 5-10% of activated alumina, 10-20% of persulfate, 5-15% of oxidizer, 2-10% of insoluble starch xanthate, 5-15% of activated kieselguhr and 1-3% of alkaline catalyst. The electroplating wastewater comprehensive treating agent can remove heavy-metal chelates, COD (chemical oxygen demand), coloring matters and eutrophy phenomena in wastewater, and has the advantages of convenient acting, high efficiency and low cost.

Description

technical field [0001] The invention relates to a wastewater treatment agent, in particular to a comprehensive treatment agent for electroplating wastewater. Background technique [0002] Electroplating wastewater is various wastewater discharged during the electroplating production process. The main sources of electroplating wastewater are: (1) Plating parts cleaning wastewater; (2) Electroplating waste liquid; (3) Other wastewater (including washing workshops, scrubbing floors, and condensed water from ventilation equipment and runoff caused by leakage of plating tanks or improper operation and management) , leaking, dripping, leaking various baths and drainage); (4) cooling equipment water. The composition of the wastewater is complex, the water quality changes greatly, the pH is unstable, and it contains heavy metal ions such as chromium, copper, nickel, cadmium, zinc and cyanide sulfide, various chelates and complexes, solid suspended matter, organic aerobic Substance...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/28C02F1/62C02F1/58
CPCC02F1/281C02F1/286C02F1/5236C02F1/56C02F1/72C02F2101/18C02F2101/20C02F2101/22C02F2103/16
Inventor 林昌民
Owner 深圳金湖电镀有限公司
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