Electronic wastewater treatment equipment

With the rapid update of electronic products nowadays, the electronics industry has also accelerated the pace of production innovation. In the production process, the high concentration organic waste liquid generated during PCB board oil cleaning, film removal process, and electroplating process can generally be divided into chromium (Cr) wastewater, nickel (Ni) wastewater, cadmium (Cd) wastewater, copper (Cu) wastewater, zinc (Zn) wastewater, gold (Au) wastewater, silver (Ag) wastewater, etc. If wastewater is directly discharged into the natural environment without treatment, it will cause huge pollution to the environment. The punishment for enterprises that fail to meet environmental impact assessment requirements by the government is very heavy, so the treatment and reuse of electronic wastewater is a major problem faced by every factory now. The electronic wastewater treatment equipment developed and produced by Wuxi Lvhesheng Environmental Protection Technology Co., Ltd. has the characteristics of smooth process flow, reasonable layout, beautiful appearance, automatic control application, convenient operation, and reliable operation.

This process fully ensures the stable and compliant discharge of treated effluent, meeting the requirements for reuse water. The entire system flow is smooth, the layout is reasonable, the appearance is beautiful, the application is automatically controlled, the operation is convenient, and the operation is reliable. The pool body adopts a unique integrated structure, occupying a small area and saving costs. Chemical reaction precipitation is carried out on heavy metal wastewater to meet the requirements of reuse or discharge; Perform chemical precipitation reaction after breaking the complex metal to meet the requirements of reuse or discharge; Collect organic cleaning wastewater and acidified developing wastewater and perform multi-stage A/O biochemical treatment process to meet discharge requirements; At the same time, some concentrated waste liquids will be outsourced for treatment according to national requirements, without generating secondary pollution.

2、 Source of electronic wastewater

The wastewater is mainly generated in the wet process of PC board, such as inner layer brushing, inner layer development, inner layer etching, inner layer film removal, electroplating, chemical copper deposition and other processes. The liquid medicine of each wet process unit uses multiple chemical raw materials to discharge various aged high concentration waste tank liquids and low concentration cleaning wastewater during the production process. The composition of wastewater from PCB production is complex and the concentration difference is large. The wastewater mainly contains Cu2+, Ni2+, COD, acid, alkali, etc EDTA、 Copper ammonia complex ions and other pollutants. Acidic high concentration waste liquid comes from processes such as acid washing and electroplating. The oil removal waste liquid mainly comes from the cleaning of the front board surface of each process. There is not much oil contamination on the PCB board itself, but a certain amount of oil removal liquid is added to the oil removal waste liquid, so the COD content is relatively high. Concentrated ink wastewater mainly refers to high concentration organic waste liquid generated during the development and film removal processes. These waste liquids contain a large amount of photosensitive film, welding film slag, etc. Their common feature is that COD is very high, sometimes reaching tens of thousands, so they must be separately pretreated. The workshop also needs to replace a certain amount of waste tank liquid every day, which increases the difficulty of wastewater treatment. If wastewater containing these components is discharged directly into water bodies without treatment, it will bring a series of hazards to the environment.

3、 Electronic wastewater treatment equipment treatment process

The company has developed a leading domestic industrial wastewater treatment process based on the characteristics of industrial electronic wastewater through extensive research, experimental analysis, and engineering practice. The main idea of this process is to classify and collect wastewater, and adopt different treatment methods. There are currently two treatment processes for treating copper ammonia and copper precipitation wastewater: one is to separate copper ammonia and copper precipitation wastewater into two types of wastewater for chemical treatment; The second method is to combine copper ammonia and copper precipitation wastewater for network breaking treatment. It is feasible from a process principle to treat two types of wastewater separately for process one. However, since the copper ammonia wastewater and the EDTA wastewater used for copper deposition are complex wastewater with similar properties, treating them separately will increase the number of equipment, increase one-time investment costs, and increase equipment maintenance rates and operating electricity costs. Process 2 combines two types of wastewater into one, which can streamline equipment, reduce control, decrease control systems, and make operations more practical.

4、 Reclaimed water system after treatment by electronic wastewater treatment equipment

Physical and chemical disinfection processes can be used, as follows:;

Source Water --->Regulating Tank --->Filtration Tank --->Disinfection Tank --->Storage Tank --->Discharge When using residential sewage as the source of reclaimed water, the biochemical+disinfection process can be used, as follows: Source Water --->Hydraulic Screen --->Regulating Tank --->Biochemical Tank --->Filtration Tank --->Disinfection Tank --->Storage Tank --->Discharge The above process facilities can be designed as above ground or underground structures according to the specific situation on site.

5、 What should I pay attention to when purchasing electronic wastewater treatment equipment?

1. Suppliers can be requested to provide successful cases or visit the site to observe the effects

Everything should be based on facts. No matter how the supplier who provides you with the equipment introduces its superior performance, you should ask the supplier to provide previous successful cases and then send someone to inspect its on-site sewage treatment effect. Although it may delay some time, it is crucial to test the professionalism of the merchants you cooperate with and whether the follow-up services can be timely and in place.

Green Hesheng Environmental Protection Technology Co., Ltd. has a large number of cases and has served Fortune 500 companies, schools, and more. Its service area covers the whole country. If you need underground integrated sewage treatment equipment, please feel free to inquire or visit the factory to view engineering cases. We will arrange for you at any time and provide you with satisfactory results display.

2. Distinguish between equipment quality and size

The quality and size of equipment are usually determined by discharge standards, types of treated sewage, and water volume. Currently, the most commonly used underground integrated sewage treatment equipment is made of carbon steel material.

3. Agree on the execution of water discharge standards

Many units fail to specify the sewage treatment standards in the contract when purchasing buried integrated sewage treatment equipment, which can lead to disputes in the future when environmental protection requirements are raised. Because emission standards have a certain impact on acceptance and pricing, there are differences in the cost of sewage treatment. There are several types of emission standards:

Pollutant Discharge Standards for Urban Sewage Treatment Plants (GB18918-2002)

Integrated Wastewater Discharge Standard (GB8978-96)

Sanitary Standards for Drinking Water in the People's Republic of China GB5749-2006

Surface Water Environmental Quality Standards (GB3838-2002)

Design Specification for Water Supply and Drainage in Residential Areas (CECS57-94)

Code for Design of Building Water Supply and Drainage (GB50015-2003)

Design Code for Water Supply and Drainage Engineering (GBJ15-88)

Design Code for Outdoor Drainage (GBJ14-91)

Technical Conditions for Manufacturing Water Treatment Equipment (JB2932-86)

4. Thoroughly understand and communicate the pre -, mid -, and post installation, debugging, and acceptance work in a timely manner

After the equipment purchase process is completed, users need to communicate and contact the manufacturer of the buried integrated sewage treatment equipment more often, and prepare the equipment burial work in advance according to the drawings provided by the manufacturer, such as water and electricity, pipelines, and equipment pit burial three-way and one leveling issues. If the preliminary work is not operated according to the drawings, it will increase unnecessary costs for both parties. Regarding the coordination of equipment unloading, installation, and debugging, the manufacturer provides guidance and training on equipment maintenance and common issues. The necessary materials and acceptance processes for subsequent acceptance should be understood in advance or asked for the manufacturer's cooperation in providing them.

Parameters of industrial wastewater treatment equipment

6、 Service Guide

1. In order to create a better flying rat handling equipment, the parameters of this product will be updated with the continuous improvement of the equipment by the company. Please keep in touch with our company at all times.

If the equipment parameters you want are different from those in this manual, our company can make design changes according to the customer's requirements.

7、 How to choose good wastewater treatment equipment

Choosing a reliable manufacturer is crucial when selecting a good wastewater treatment equipment.

Green Hesheng Environmental Protection Technology specializes in customized production of wastewater treatment equipment suitable for you, just for your satisfied smile.

With 15 years of experience in the environmental protection industry, we have provided high-quality wastewater treatment equipment to thousands of enterprises, and Green Hesheng Environmental Protection Technology is even more trustworthy.

A self-produced and self selling enterprise with guaranteed quality and quantity is a better choice.