Exploration of treatment technology for heavy metal wastewater

• Published in: E3S web of conferences 2023-01, Vol.393, p.3031
• Main Authors: Li, Yunchu, Huang, Ziyan, Lyu, Chenxi, Yan, Yijuan, Zhu, Shengnan
• Format: Article
• Language: English
• ISSN: 2267-1242; 2267-1242
• DOI: 10.1051/e3sconf/202339303031

Among the current pollutants in our water bodies, the one that has the greatest degree of pollution and impact on the water environment is heavy metal wastewater. Various heavy metal ions in water bodies can seriously disrupt the ecological balance of water bodies and spread throughout the biosphere through the natural material cycle and other means. Excess heavy metal ions not only seriously endanger the health of aquatic organisms, but can also enrich in animals and even humans, posing a serious threat to human health and causing failure or damage to vital organs such as the human internal organs and brain. The common heavy metal ions in existing water bodies are Cu 2+ , Hg 2+ , Pb 2+ etc. Due to their inherent difficulty in degradation, enrichment and persistence, heavy metal ions make heavy metal wastewater treatment different from other traditional pollutant treatment methods. This paper examines the two main techniques currently used to remove heavy metals from water bodies: physical, chemical and biological techniques, and summarises the advantages and disadvantages of both methods. It is proposed that future treatment methods for heavy metal wastewater should develop an environmentally friendly and efficient systematic approach based on biotechnology and synergistic multi-technologies.