The composition of electroplating wastewater is very complex. In addition to cyanide containing wastewater and chromium containing wastewater, heavy metal wastewater is a potentially hazardous type of wastewater in the electroplating industry. Due to the complexity of electroplating wastewater, different components of wastewater need to be separated and resolved, and the effluent before resolution needs to be mixed and discharged to meet standards. Below, the editor will tell you how to treat electroplating wastewater with excessive heavy metals?

In response to the situation of excessive heavy metals in electroplating wastewater, it is necessary to address the large amount of heavy metal ions in the wastewater in order to achieve standard discharge.

Treatment method for excessive heavy metals in electroplating wastewater:

1. Sedimentation or floating

Transforming heavy metals in wastewater into insoluble metal compounds or elements. Select methods such as neutralization precipitation, sulfate precipitation, upregulation separation, electrolytic deposition (or upregulation), membrane electrolysis, etc.

2. Concentration and Separation

Concentrate and separate heavy metals in wastewater without changing their chemical forms. Choose methods such as reverse osmosis, electrodialysis, volatilization, and ion exchange.

But if the concentration of heavy metals is low after solving the problem, or if it is necessary to urgently discharge the wastewater to meet the standard, we can try using heavy metal capture agents.

Adding heavy metal capture agents to wastewater and using various chelating groups to chelate heavy metal ions, the heavy metals in the wastewater that are in a state of dissolution are transformed into insoluble heavy metal compounds or elements, which are removed from the wastewater through sedimentation; The qualified effluent before resolution can be discharged. In practice, appropriate treatment methods must be selected based on the specific situation of wastewater.

专业水处理的疑难问题，产品选型问题，可以单击下面的微信二维码电话联系贺工在线指导，长按微信二维码可自动识别添加贺工微信沟通解决您的疑难问题