LEICheng,HUANGWen-feng,ZHANGhui,et al.A Pilot Study on Advanced Treatment of Arsenic-containing Wastewater in Gallium Arsenide Chip Industry[J].China Water & Wastewater,2023,39(5):101-105.
A Pilot Study on Advanced Treatment of Arsenic-containing Wastewater in Gallium Arsenide Chip Industry
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第5期
Page:
101-105
Column:
Date of publication:
2023-03-01
- Keywords:
- gallium arsenide chip; arsenic-containing wastewater; advanced treatment; electrochemistry; three-dimensional electrode; integrated device
- Abstract:
- The arsenic concentration in the wastewater from a gallium arsenide chip manufacturer was still 0.2 mg/L after the treatment of lime-ferric salt process, which did not meet the requirement of reuse water. A pilot-scale integrated arsenic removal device containing activated carbon three-dimensional electrode was used for the advanced treatment of arsenic-containing wastewater. The optimal operational parameters were as follows: chemicals dosage of 0.10 g/L, reaction time of 60 min and pH of 9. After 30 days of operation with these parameters, the removal rate of arsenic in the wastewater basically stabilized above 98%, and the arsenic concentration in the effluent was less than 0.005 mg/L, which met the limit specified in Standards for Drinking Water Quality (GB 5749-2006) and could be reused to production.
Last Update:
2023-03-01