Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Copper-containing wastewater treatment process and its application

A wastewater treatment and process technology, which is applied in water/sewage treatment, water treatment parameter control, water/sewage multi-stage treatment, etc. It can solve the problem that the biochemical treatment process is difficult to operate stably, cannot stably reach the effluent standard, treatment and maintenance costs Expensive and other problems, to achieve the effect of increasing the ozone utilization rate, improving the biodegradability, and increasing the generation base

Active Publication Date: 2021-07-23
GUANGDONG UNIV OF TECH +2
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current methods are high in technical cost, complex in process, low in efficiency, unstable in effect, expensive in treatment and maintenance, and because the quality of the influent water in the factory fluctuates greatly, it cannot stably meet the standard of the effluent water, and the equipment is useless
Furthermore, if the heavy metal pollutants at the front end cannot be effectively removed, it will make it difficult for the biochemical treatment process that continues to be used at the back end to operate stably, resulting in a total collapse

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Copper-containing wastewater treatment process and its application
  • Copper-containing wastewater treatment process and its application
  • Copper-containing wastewater treatment process and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0170] The actual electroless plating wastewater was taken from an electroplating wastewater treatment plant in a park in Dongguan. The copper-containing wastewater was tested to compare the water quality of the wastewater before and after treatment. Further, the copper-containing wastewater used in this embodiment is wastewater from a pH correction pool in an electroplating wastewater treatment plant in a park in Dongguan.

[0171] refer to figure 1 -4, the catalyst dosing device 3, the dosing pipe and the three-way interface 4 are connected, and the water inlet pipeline of the dissolved air pump 1 is provided with a three-way interface 4, and the catalyst passes through the catalyst dosing device 3, the dosing pipe and the three-way interface 4 Throw it into copper-containing waste water; the intake line of the dissolved air pump 1 is connected to the gas supply line of the ozone generator 2, and a gas flow meter 5 and a gas volume regulating valve 6 are arranged on the gas ...

Embodiment 2

[0187] A copper-containing wastewater treatment process, the difference from Example 1 is that in this example:

[0188] The gas-liquid mixing ratio is 1:9;

[0189] The dosage of hydrogen peroxide catalyst is 4mL / L;

[0190] The dosing concentration of DTC heavy metal collector is 80mg / L, the dosing concentration of coagulant PAC (polyaluminum chloride) is 70mg / L, and the dosing concentration of coagulant PAM (polyacrylamide) is 8mg / L L;

[0191] The chelated heavy metal pollutants flow into the vertical flow sedimentation tank after flocculation and coagulation. After sedimentation, the heavy metal pollutant flocs are deposited at the bottom of the tank.

[0192] In this embodiment, after being dispersed by the micro-nano bubble aeration head, the dissolution of ozone is accelerated, the mass transfer efficiency of gas and liquid is reduced, and the utilization rate of ozone reaches 96%, which greatly improves the utilization rate of ozone.

[0193] The water quality of t...

Embodiment 3

[0198] The copper-containing wastewater used in this example is copper-containing wastewater collected separately from an electroplating wastewater treatment plant in a park in Qingyuan.

[0199] refer to figure 1 -4. A copper-containing wastewater treatment process, comprising the following steps:

[0200] Fill the water tank with copper-containing wastewater to be treated, turn on the ozone generator air pump switch, wait for the air intake to stabilize for 3 minutes, turn on the circulating water cooling device, and control the temperature of the circulating water at 15°C. After ensuring that the cooling water flows into the ozone generator tube stably, turn on the ozone switch and adjust the ozone concentration and oxygen flow to 80% and 5L / min respectively; after the ozone is output stably, turn on the dissolved air pump and control the gas-liquid mixing ratio to 1:8 , inhale ozone and copper-containing wastewater to be treated at the same time, and initially dissolve oz...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of industrial wastewater treatment, and relates to a copper-containing wastewater treatment process and its application. The copper-containing wastewater treatment process includes the following steps: S1. After adding a catalyst to the copper-containing wastewater, it is fully mixed with ozone through a micro-nano bubble aeration device, and sprayed into a folded-plate catalytic ozonation reactor for oxidative decomposition. Network pretreatment; S2. After the pretreated wastewater is detected by the pH online monitoring and control device, it enters the reaction pool, and the heavy metal collector, coagulant and coagulant are added in sequence to carry out the parasite competition chelation reaction, Coagulation reaction and flocculation reaction; S3, the waste water after the reaction enters the solid-liquid separation device for solid-liquid separation to obtain waste water from which heavy metal copper has been removed. The invention can effectively reduce the copper content in the waste water, ensure that the heavy metal copper concentration in the effluent continuously and stably meets the discharge standard, and the total copper content in the effluent is lower than 0.3mg / L, and has simple process, low operation cost and strong applicability.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to a copper-containing wastewater treatment process and its application. Background technique [0002] Excessive copper ion discharge in electroplating wastewater will affect the survival of aquatic organisms, pollute water quality, surrounding soil and growing plants. It is difficult to biodegrade and easy to accumulate in the environment, which can have long-term adverse effects on the environment and human health. At present, according to the different types of electroplating wastewater, there are different forms in the solution. According to the nature, it can be divided into cyanide-containing wastewater, chromium-containing wastewater, copper-containing wastewater, heavy metal wastewater, acid-base wastewater, and mixed wastewater; it can also be based on the electroplating process. Different, it is simply divided into wastewater containing ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F101/20C02F101/30
CPCC02F1/001C02F1/5236C02F1/56C02F1/62C02F1/722C02F1/725C02F1/76C02F1/78C02F9/00C02F2001/007C02F2101/20C02F2101/30C02F2209/06
Inventor 关智杰孙水裕区雪连郭艳平阳健任杰陈楠纬周思宇奚瑞锋林晖徐百艺陈金炫
Owner GUANGDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com