Heavy Metal Surface Wastewater Treatment Method
Apr 27, 2022
Heavy metal wastewater refers to wastewater containing heavy metals discharged from industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. Heavy metal pollution of water bodies has become one of the most serious environments in the world today. Its wastewater treatment has always been a headache for environmental protection personnel. Due to the different types and concentrations of heavy metals in wastewater generated by different industries, there is even a world of difference. If you directly imitate or apply traditional processes, there will be poor targeting, low efficiency, and effluent quality. non-compliance, etc.
At present, the commonly used technologies for heavy metal wastewater treatment include:
1. Chemical method: chemical precipitation method, redox method, solvent extraction and separation; the leading process is based on a key laboratory of the Ministry of Education of our company, any scheme or equipment debugging is based on water quality analysis, and the combination of theory and experiment is the main body Tailor-made treatment plan.
2. Physical and chemical methods: ion exchange method, adsorption method, membrane separation technology;
3. Biological method: phytoremediation method, biological flocculation method, biological adsorption method. However, biological methods also have certain limitations: 1) It is easily affected by external factors such as ion concentration, temperature, pH, etc. in wastewater; 2) Biological processes are limited by seasons, cultivation cycles and selectivity; 3) Many biological treatment of heavy metal wastewater At present, most of the researches are still in the laboratory stage and still need to be tested in practical applications.
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