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Project of river water pollution source identification formation and practice (3/3)

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This project attempted to investigate spatial and temporal distributions of water pollution sources and their impacts on the river water quality. River Water samples were collected from selected sites at the Houlong river, Beigang river, Jishui river, as well as Agongdian river. Source profiles were obtained from sampling and analysis of industrial waste water. Source contributions to river water were estimated by statistical and modeling analysis. An advance training course and a practical workshop were completed to serve the purpose of river-pollution-source-identification skill cultivation. It also enhanced the experience sharing between departments. The works of this project were summarized as follows: (1) Literature review: analytical results of pollutants in river water, water pollution source profile, and application of source apportionment models were reviewed and summarized; (2) Sampling and analysis of industrial waste water: a total of 97 wastewater samples from 67 effluent discharges and 30 manufacture unit discharges were collected and analyzed; (3) Characterization of industrial waste water: specific markers of industrial waste water were identified; (4) Sampling and analysis of river water: a total of 342 water samples were collected from the upstream and downstream areas of the potential pollution sources in two phases, followed by analyses of 52 heavy metals and varies organic compounds; (5) Spatial and temporal distributions of pollutants in river water: temporal variations of pollutants were observed at a selected site in each river, which was identified as the most polluted hotspot; (6) Source apportionment of river water pollutants: the percent mass accounted for measured mass (%MASS) were calculated during the monitoring periods. Potential sources of pollutants, including heavy metals, and their possible locations were estimated for further investigation; (7) Modified the guideline for source apportionment of water pollution that was drafted last year for future applications.
Keyword
Industrial waste water, River water pollution, Pollution hotspot, Source apportionment
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