With more gold and silver mountains, it is better to create tens of thousands of green water and green mountains for children and grandchildren. The awareness of environmental protection starts from bit by bit.
Main points of galvanizing wastewater treatment:
1. The zinc ion content in wastewater should not be greater than 50mg/L;
2. The treated cleaning water can be recycled, but fresh water is used to update the treated water volume by 10-15% every day;
3. The mixed flocculation time can be 5-10min;
4. The pH value of wastewater during mixed flocculation should be controlled at 8.0-9.0;
5. The dosage of basic aluminum chloride should be 15mg/L (calculated as aluminum ion);
6. The volume of zinc-containing sludge (with a moisture content of 99.7 percent) can be determined by 4 to 8 percent of the volume of the treated wastewater.
