Hydrology: Current Research

Huaili Zheng

Publications

• Research Article
  Optimization of the Coagulation-flocculation Process for Wastewater Treatment Using Polymeric Ferric Sulfate (PFS) - Poly-diallyldimethyl Ammonium Chloride (PDADMAC) Composite Coagulant
  
  Author(s): Huaili Zheng, Tiroyaone Tshukudu and Jun YangHuaili Zheng, Tiroyaone Tshukudu and Jun Yang
  
  In this study, coagulation-flocculation process was optimized using PFS, PFPD1, PFPD2 and PFPD3. The response surface methodology was used to investigate the effect changes in the level of coagulant dose and coagulation pH have on turbidity and COD removal. In addition, the optimum combination of coagulant dosage and coagulation pH that yields the maximum removal of turbidity, and COD were determined. The results revealed that the optimum conditions for the four coagulants were dosage of 388 mg/L and pH of 7.6 for PFS; dosage of 388 mg/L and pH of 7.45 for PFPD1; dosage of 351 mg/L and pH of 8.0 for PFPD2; dosage of 419 mg/L and pH of 7.64 for PFPD3. The model showed that for turbidity removal, the effectiveness of the coagulants in decreasing order was PFS>PFPD1>PFPD2>PFPD3 whi.. Read More»
  DOI: 10.4172/2157-7587.1000139

  Abstract