YUAN Wen-jing,TANG Li,HE Sheng-bing.Effect of Magnetic Flocculation with Quadratic General Rotary Combination Design for Treatment of River Water[J].China Water & Wastewater,2021,37(3 3):92-98.
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Effect of Magnetic Flocculation with Quadratic General Rotary Combination Design for Treatment of River Water

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 3 3 Page: 92-98 Column: Date of publication: 2021-02-01
Author(s):
YUAN Wen-jing1; TANG Li2; 3; HE Sheng-bing1; 2
(1. School of Environmental Science and Engineering， Shanghai Jiao Tong University， Shanghai 200240， China； 2. Shanghai Engineering Research Center of Landscape Water Environment, Shanghai 200031， China; 3. Shanghai Landscape Architecture Design Institute, Shanghai 200031， China)
Keywords:
river water; magnetic flocculation; quadratic general rotary combination design; turbidity
Abstract:
River water in Suzhou was treated by magnetic flocculation with quadratic general rotary combination design, and effects of four factors (PAC dosage, PAM dosage, magnetic powder dosage and settling time) on magnetic flocculation performance were analyzed systematically. By using variance analysis, regression model equation analysis, single factor effect analysis and two factor interaction effect analysis, the optimal operating parameters were obtained: PAC dosage of 15 mg/L, PAM dosage of 0.58 mg/L, magnetic powder dosage of 2.7 mg/L and settling time of 2.1 min, and the expected effluent turbidity was 0.73 NTU with the removal efficiency of 97.2%. When these parameters were adopted in the experiment, the actual effluent turbidity was 0.82 NTU with removal efficiency of 96.9%.
Last Update: 2021-02-01