ZHOU Jun,GUO Qian-ying,YANG Ying,et al.Comparison of Three-dimensional Electrolytic Fixed Bed with Different Anode Plates Treating Catering Wastewater[J].China Water & Wastewater,2020,36(23 23):58-63.
Comparison of Three-dimensional Electrolytic Fixed Bed with Different Anode Plates Treating Catering Wastewater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
23 23
Page:
58-63
Column:
Date of publication:
2020-12-01
- Keywords:
- catering wastewater; three-dimensional electrolytic fixed bed; titanium plate; activated carbon fiber plate; stainless steel plate
- Abstract:
- In order to improve the treatment efficiency of three-dimensional electrolytic fixed bed treating catering wastewater, different positive plate materials (stainless steel plate, activated carbon fiber plate and titanium plate) were applied in a three-dimensional electrolytic fixed bed. Efficiencies of the three plate materials treating catering wastewater were compared and analyzed comprehensively, and the positive plate material with the best treatment efficiency was selected. By changing the amounts of activated carbon, current density, initial pH and electrolysis time in single-factor experiments, the removal efficiencies of COD and SS were compared among the three plate materials. Considering the treatment efficiency and economy, the titanium plate was the best, followed by the stainless steel plate, and then the activated carbon fiber plate. The influence degree of each factor on the treatment efficiency of titanium plate was determined by orthogonal experiments, and the optimal processing conditions were as follows: dosage of activated carbon was 15 g/L, current density was 50 mA/cm2, initial pH was 3 and electrolysis time was 40 min. Under the optimal experimental conditions, the removal efficiencies of animal and vegetable oils, BOD5, COD and SS were 99.21%, 66.54%, 84.21% and 90.76%, respectively. Therefore, the titanium plate was suggested to be selected as the anode for the three-dimensional electrolytic fixed bed in order to achieve better treatment efficiency and reduce the cost.
Last Update:
2020-12-01