Wei B Tseng

National Sun Yat-sen University, Kao-hsiung-shih, Kaohsiung, Taiwan

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Publications (2)2.33 Total impact

  • Jie C Lou · Hung Y Chan · Chih Y Yang · Wei B Tseng · Jia Y Han
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    ABSTRACT: This study focused on reducing the haloacetic acid (HAA) concentrations in treated drinking water. HAA has been thought to be one possible nutrient supporting heterotrophic bacteria regrowth in drinking water. In this study, experiments were conducted using a pilot-scale system to evaluate the efficiency of biological filters (BF) for reducing excess HAA concentrations in water. The BF system reduced the total HAA concentration and the concentrations of five HAA species in the water. Dichloroacetic acid (DCAA), monobromoacetic acid (MBAA) and dibromoacetic acid (DBAA) were the three main HAA5 species that were present in the treated drinking water in this investigation. Combined, these three species represent approximately 77% of the HAA5 in the finished water after BF. The verification of the empirical HAA equation for the outlet in the BF system indicated linear relationships with high correlation coefficients. The empirical equation for the HAA5 concentrations in the finished water was established by examining other nutrients (e.g., dissolved organic carbon (DOC), ultraviolet absorbance at 254 nm wavelength (UV254), and ammonia nitrogen) that can reduce pathogenic contamination. These findings may be useful for designing advanced processes for conventional water treatment plants or for managing water treatment and distribution systems for providing high-quality drinking water.
    Journal of Environmental Science and Health Part A Toxic/Hazardous Substances & Environmental Engineering 12/2014; 49(14):1693-1700. DOI:10.1080/10934529.2014.951237 · 1.16 Impact Factor
  • Jie C Lou · Wei B Tseng · Ming C Wu · Jia Y Han · Bi H Chen
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    ABSTRACT: This study investigates the removal efficiency of disinfection by-products (DBPs) in raw water at a water treatment plant using a biological powder-activated carbon system (BPACS). The presence of an excessive amount of DBPs has a large impact on the water quality of drinking water treated from the purification process. This study collected rapidly filtered water from an advanced water treatment plant for use in experiments on raw water. The removal efficiency of the trihalomethane formation potential (THMFP) and haloacetic acids formation potential (HAAFP) was studied under various hydraulic retention times and under organic DOC loadings. The results showed that the BPACS lowered the average concentration of dissolved organic carbon (DOC), UV(254) and the SUVA value (equivalent to UV(254)/DOC) in raw water. The system efficiently removed the THMFP and HAAFP during the treatment of the three primary organic carbon items. These results highlight the importance of the BPACS for efficiently treating disinfection by-products. These discoveries provide important information on biological degradation behaviors that can remove excessive amounts of disinfection by-products from drinking water.
    Journal of Environmental Science and Health Part A Toxic/Hazardous Substances & Environmental Engineering 08/2012; 47(10):1478-85. DOI:10.1080/10934529.2012.673310 · 1.16 Impact Factor

Publication Stats

2 Citations
2.33 Total Impact Points


  • 2014
    • National Sun Yat-sen University
      • Institute of Environmental Engineering
      Kao-hsiung-shih, Kaohsiung, Taiwan