Principles for Handling Industrial Wastewater Treatment:
It is preferred to use a non-toxic production process to eliminate or reduce the generation of toxic and hazardous waste water in the production process.
In the process of using toxic raw materials and producing toxic intermediates and products, strict operation and supervision should be carried out to eliminate dripping, reduce loss, and use reasonable processes and equipment as much as possible.
Wastewater containing highly toxic substances, such as heavy metals, radioactive materials, high concentrations of phenol, cyanide wastewater should be separated from other wastewater to treat and recover useful materials.
Wastewater with large flow and light pollution should be properly treated and recycled, and should not be discharged into sewers to avoid increasing urban sewer and urban sewage treatment load.
Organic wastewater similar to municipal wastewater, such as food processing wastewater, sugar wastewater, and papermaking wastewater, can be discharged into urban sewage systems for treatment.
Some toxic waste waters that can be biodegraded, such as phenol and cyanide wastewater, should be treated first, discharged into urban sewers according to the agreed discharge standards, and further biochemical treatment.
Containing toxic waste water that is difficult to biodegrade, it should be treated separately and should not be discharged into urban sewers. The development trend of industrial wastewater treatment is to recycle wastewater and pollutants as useful resources or to implement closed loops.