Tips For Selecting The Valve For Alkali Recovery Treatment

Alkali recovery treatment is a subdivision field in wastewater treatment, and it is also a technology that has received the most attention at present. The paper industry, textile industry, electronic production industry, and chemical industry will produce wastewater containing alkaline substances due to the characteristics of their processing processes. If this type of wastewater is discharged directly without treatment, it will pollute the soil and water, and affect the human living environment and the balance of the ecosystem.

What is alkali recovery treatment?

Alkali recovery treatment refers to the recovery and reuse of chemical substances in wastewater containing alkaline chemical substances, through liquid-solid separation, recovery of chemical substances, acid neutralization, precipitation and other steps to separate chemical substances, alkaline substances and water. The purpose of the technology is to recover and reuse chemicals, as well as improve the recycling rate of water resources.

Benefits of Alkali Recovery Treatment

Through alkali recovery treatment, the discharge of waste water can be effectively reduced, the utilization rate of chemical substances can be improved, energy consumption can be reduced, and raw materials can be saved. Therefore, alkali recovery treatment is an environmentally friendly and sustainable technology.

During the alkali recovery process, the liquid needs to be transported to different processing equipment and storage tanks through pipelines, so it is necessary to use valves to adjust the flow, adjust the pressure or change the flow direction of the liquid, so that the liquid can be transported smoothly and the entire process can be effectively controlled.

5 Types of Valves Common Used In Alkali recovery treatment

Every kind of wastewater treatment will have more than 2 processing processes, and the same is true for alkali recovery treatment. Depending on the process, different types of valves may be required.

In the liquid-solid separation stage, knife gate valves, diaphragm valves or butterfly valves are required to control the flow of inlet and outlet. Since the liquid at this stage contains impurities, it is easy to block the valve, so we need to use a knife gate valve to avoid system shutdown caused by blockage. After the crystals in the medium are separated, flow control can be performed using a diaphragm valve or a butterfly valve.

In the alkali recovery stage, we need to use regulating valves to control parameters such as the heating temperature and pressure of the evaporator to ensure the smooth and safe operation of this stage.

Acid neutralization is a process of raising the pH value of wastewater to neutral or alkaline, so as to meet the water quality requirements of discharge standards. In this process, control valves such as ball valves or globe valves will be used to control liquid delivery and emission.

All of the above valves can be equipped with electric actuators or pneumatic actuators, so as to achieve the purpose of fluid automation and improve project processing efficiency.

In summary, alkali recycling is an environmentally friendly technology that can help maintain the overall ecological balance. Unused processes will have different requirements on the valves, so we must choose carefully. Anything we could help, feel free to consult us at