Hunan Vary Tech Co., Ltd.
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  • Contact Person : Mr. Feng Belly
  • Company Name : Hunan Vary Tech Co., Ltd.
  • Tel : 86-731-82790115
  • Fax : 86-731-82796318
  • Address : Hunan,Chang Sha,No.11, Pan Pan road,National Economy and Technology Development Zone, Chang Sha, Hu Nan
  • Country/Region : China
  • Zip : 410100

Low Copper Content Wastewater Discharge Reduction Equipment

Low Copper Content Wastewater Discharge Reduction Equipment
Product Detailed
Related Categories:Chemical Waste
1. No pollution, acid can be reused. 2. can obtain min. 99.5% purity electro-deposit copper plates.

1. Technical Introduction

It is designed for spent low copper content solution range in 5g/l-50g/l which is produced from tank replacement and tank washing for procedures such as black oxide line and internal layer pretreatment, solder dam pretreatment, chemistry nickel gold and silver line, copper reduction line, horizontal line and OSP, etc. It adopts new technique of direct electro-deposition to obtain min.  99.5% purity electro-deposit copper plates. The copper content of treated solution is reduced to 0.5 g/L which can be used for acidification of spent stripping and developing solution in PCB plant.

2. Application Scope

It is applied to comprehensive copper-containing solution produced in PCB plant, copper electro-plating plant and copper smelting plant.

3. Equipment Introduction

3.1 Work Flow

Spent solution is pumped into electro bath where begin to electro-deposit after additives automatically been added and mixed evenly. Electrolytic copper obtained at cathode after copper ion been deposited and small amount chlorine produced from anode will be discharged after alkaline sprinkle treatment through sweep gas spray tower. The spent copper solution is continuously electrodeposited till concentration of copper is lower than 0.5g/L. Treated solution eventually will be delivered to wastewater treatment station or be used for acidification of spent stripping and developing solution treatment.

3.2 Main Specifications

Add Chemicals

Sweep Gas

Emission

Electrolytic bath

Circulating Cooling Bath

Copper

Sink

Sweep Gas Spray Tower

Raffinate

Acidizing Spent Stripping and Developing Solution

 

Models

RLC-01

RLC-05

RLC-10

RLC-20

Process Capacity (L/D)

1600

8000

16000

32000

Power(kw)

6

30

60

120

Work Floor(m2)

5

35

70

140

Operator(s)

1

3

5

7

Electricity Consumption(kw.h/t)

<5000

Copper Recovery Rate

>95%

Note: Copper content is considered as 10 g/L.

 

4. Environmental-protection Standards

4.1 Exhaust gas emission reaches National Environmental Protection Standards: exhaust gas is discharged after treatment, no odor.

4.2 Spent electro-deposition solution is treated before discharge.

 

5. Features and Advantages

The copper content of low copper content wastewater usually is 10 g/L. Traditional treatment processes such as neutralization-precipitation and cathode electro-deposition only can obtain low added value products.  Here are the effects of different processes as following:

 

Index

Neutralization-precipitation

Traditional Electrolysis Technique

VARY's Electrolysis Technique

Final Product

Copper mud

Copper particles, high water contained

Copper plates, no water contained

Product Purity

5%~20%

78%~82%

>99.5%

Efficiency

-

60%~75%

80%~90%

Electricity Consumption for One Ton Copper Production

-

6000~8000 kW.h

5000 kW.h

Labor Intensity

High, to clean up copper mud

High

Low

Price of Final Product

Very low

Low

High

Effect to Environment

Secondary pollution easily

Pollution, washing water discharged

No pollution, acid can be reused.

 

 

 

 

Low Copper Content Wastewater Discharge Reduction Equipment



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