Hazardous wastewaterDealing with difficulties

The main sources of hazardous chemical industry include medical wastewater, pesticide wastewater, organic solvent wastewater, waste mineral oil, dye and coating wastewater, non-ferrous metal wastewater, and other industries. A large amount of corrosive, toxic, and flammable wastewater is discharged during the production process. The problem of how to handle it has plagued the environmental protection industry for many years. The huge production volume, the need to improve processing capacity, and the low load rate of processing equipment are all current difficult issues.

The main controller of the production process automation control system adopts high-performance PLC programmable logic controller, forming a safe and stable industrial network control system with the characteristics of "decentralized control, centralized management, and data sharing", which can monitor the production process in real time and automatically process production data statistics. PLC configuration is flexible, with good stability and easy development, maintenance, and operation. Its application is also very flexible, allowing it to work in harsh environments.

Five characteristics of automated monitoring system for hazardous chemical wastewater

① It can achieve hierarchical distributed control, realize "centralized management and decentralized control", greatly improving the security of the system;

② High reliability and convenient networking. The hardware system configuration is simple, and it is easy to add or remove PLCs in the network to achieve the purpose of expanding the network;

③ Easy programming, short development cycle, and easy maintenance;

④ The configuration and adjustment within the system are very convenient;

⑤ Directly connected to industrial field signals, it is easy to achieve mechatronics integration.

Four treatment methods for hazardous chemical wastewater

Hazardous chemical wastewater contains oils, organic compounds, and high floating substances, and only after completing the wastewater treatment can other hazardous chemical wastewater treatment methods be carried out. Due to the different types of wastewater, different treatment methods must be implemented for each type of wastewater.

Treatment of heavy metal polluted wastewater

Chemical precipitation+activated carbon filter+multiphase catalysis+evaporative crystallizer

Emulsion wastewater treatment

Oil filter+air flotation machine+multiphase catalysis+evaporative crystallizer

Waste acid and alkali treatment method

Neutralization precipitation+multiphase catalysis+evaporative crystallizer

Cyanide containing wastewater treatment

Distillation+Multiphase Catalysis+Evaporative Crystallizer

The above are the four mainstream solutions for the treatment of hazardous wastewater in the industry. Among these four solutions, the use of evaporative crystallizers is not only efficient, energy-saving, and easy to operate, but also saves a lot of operating costs and helps enterprises achieve sustainable development. Therefore, it has been widely applied in current hazardous wastewater treatment projects.