title: Utilization of artificial recharged effluent as makeup water for industrial cooling system: corrosion and scaling.
abstract: The secondary effluent from wastewater treatment plants was reused for industrial cooling water after pre-treatment with a laboratory-scale soil aquifer treatment (SAT) system. Up to a 95.3% removal efficiency for suspended solids (SS), 51.4% for chemical oxygen demand (COD), 32.1% for Cl(-) and 30.0% SO4(2-) were observed for the recharged secondary effluent after the SAT operation, which is essential for controlling scaling and corrosion during the cooling process. As compared to the secondary effluent, the reuse of the 1.5 m depth SAT effluent decreased the corrosion by 75.0%, in addition to a 55.1% decline of the scales/biofouling formation (with a compacted structure). The experimental results can satisfy the Chinese criterion of Design Criterion of the Industrial Circulating Cooling Water Treatment (GB 50050-95), and was more efficient than tertiary effluent which coagulated with ferric chloride. In addition, chemical structure of the scales/biofouling obtained from the cooling system was analyzed.
authors.affiliation: State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: zhql1962@163.com.
authors.forename: Liangliang
authors.initials: L
authors.lastname: Wei
authors.affiliation: State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: zhql1962@163.com.
authors.forename: Kena
authors.initials: K
authors.lastname: Qin
authors.affiliation: State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: zhql1962@163.com.
authors.forename: Qingliang
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Noguera
authors.affiliation: State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: zhql1962@163.com.
authors.forename: Ming
authors.initials: M
authors.lastname: Xin
authors.affiliation: State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: zhql1962@163.com.
authors.forename: Chengcai
authors.initials: C
authors.lastname: Liu
authors.affiliation: Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.
authors.forename: Natalie
authors.initials: N
authors.lastname: Keene
authors.affiliation: State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: zhql1962@163.com.
authors.forename: Kun
authors.initials: K
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: zhql1962@163.com.
authors.forename: Fuyi
authors.initials: F
authors.lastname: Cui
mesh_terms: D057219:Biofouling; D003343:Corrosion; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical; D018508:Water Purification / Q000379:methods
chemical_list: D062065:Wastewater; D014867:Water; D014874:Water Pollutants, Chemical