Copper-containing wastewater treatment technology and application

A wastewater treatment and process technology, which is applied in water/sewage treatment, water treatment parameter control, oxidized water/sewage treatment, etc. It can solve the problem that the biochemical treatment process is difficult to operate stably, cannot stably reach the effluent standard, and the treatment and maintenance costs are expensive. and other problems, to achieve the effect of improving ozone utilization rate, low gas-liquid mass transfer resistance, and improving biodegradability

Active Publication Date: 2019-03-22
GUANGDONG UNIV OF TECH +2
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  • 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 efflu

Method used

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  • Copper-containing wastewater treatment technology and application
  • Copper-containing wastewater treatment technology and application
  • Copper-containing wastewater treatment technology and 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...

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Abstract

The invention belongs to the technical field of industrial wastewater treatment and relates to a copper-containing wastewater treatment technology and application. The copper-containing wastewater treatment technology comprises the following steps: S1, adding a catalyst into copper-containing wastewater, utilizing a micro-nano bubble aerating device to fully mix the copper-containing wastewater with ozone, spraying into a folded plate type catalyzed ozonation reactor and performing oxidization complexation breaking pretreatment; S2, detecting the pretreated wastewater through a pH online monitoring joint control device, sending the pretreated wastewater into a reaction tank and sequentially adding a heavy metal capturing agent, a coagulant and a coagulant aid to perform counterpoint competition chelation reaction, agglomeration reaction and flocculation reaction; S3, sending the reacted wastewater into a solid-liquid separation device to perform solid-liquid separation to obtain the heavy metal copper removed wastewater. The copper-containing wastewater treatment technology disclosed by the invention can effectively reduce the copper content in the wastewater, can ensure that the heavy metal copper concentration in effluent continuously and stably reach the discharge standard and the total copper content of the effluent is lower than 0.3 mg/L and has the advantages of simple technology, low operation cost and strong adaptability.

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

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Application Information

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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
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