Chemically enhanced primary treatment of municipal wastewater with ferrate(VI)
- 1 November 2020
- journal article
- research article
- Published by Wiley in Water Environment Research
- Vol. 93 (6), 817-825
- https://doi.org/10.1002/wer.1473
Abstract
Chemically enhanced primary treatment (CEPT) with ferrate(VI), a multifunctional treatment agent, was investigated for treatment of municipal wastewater in a laboratory‐scale study. The treatment performance was evaluated at different ferrate(VI) doses (0.0‐9.0 mg/L) and pH (6.0 and 7.5). The optimal removals of total suspended solids (TSS) (52%), total chemical oxygen demand (COD) (34%), and total phosphorus (47%) were achieved at the highest ferrate(VI) dose (9.0 mg/L) and the weakly alkaline condition (pH 7.5). The pollutant abatements principally ascribed to formation of large‐sized aggregate and ensuing sedimentation fell within the reported ranges of CEPT with traditional coagulants. However, different from conventional CEPT, ferrate(VI) appreciably removed recalcitrant dissolved organic phosphorus (49%) and simultaneously inactivated total coliform (3.30 log removal) and E. coli (3.67 log removal) at 9.0 mg/L Fe(VI) and pH 7.5. The CEPT with ferrate(VI) offers an innovative alternative for improving municipal wastewater treatment.Keywords
Funding Information
- New Jersey Water Resources Research Institute
- Montclair State University
This publication has 29 references indexed in Scilit:
- Optimization of chemical precipitation to improve the primary treatment of wastewaterDesalination and Water Treatment, 2013
- Removal of selected endocrine disrupting chemicals (EDCs) and pharmaceuticals and personal care products (PPCPs) during ferrate(VI) treatment of secondary wastewater effluentsWater Research, 2012
- Oxidation and coagulation of humic substances by potassium ferrateWater Science & Technology, 2010
- Oxidative transformation of micropollutants during municipal wastewater treatment: Comparison of kinetic aspects of selective (chlorine, chlorine dioxide, ferrateVI, and ozone) and non-selective oxidants (hydroxyl radical)Water Research, 2010
- Chemically enhanced primary treatment (CEPT) for removal of carbon and nutrients from municipal wastewater treatment plants: a case study of ShanghaiWater Science & Technology, 2009
- Ferric coagulant recovered from coagulation sludge and its recycle in chemically enhanced primary treatmentWater Science & Technology, 2009
- Recycle of Alum recovered from water treatment sludge in chemically enhanced primary treatmentJournal of Hazardous Materials, 2009
- Spectrophotometric determination of ferrate (Fe(VI)) in water by ABTSWater Research, 2005
- The use of ferric chloride and anionic polymer in the chemically assisted primary sedimentation processChemosphere, 1999
- Optimised particle separation in the primary step of wastewater treatmentWater Science & Technology, 1998