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| DOI：10.13522/j.cnki.ggps.2017.0351 |
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| Pilot-scale Study on In-situ Reduction of Black and Odorous Sediment in River Channel by Immobilized Microorganism Technology |
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YAO Chenzhen, XU Zhiqiang, YANG Jie, LIU Rongrong, ZHOU Aichao
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State Key Laboratory of Eco-hydraulic Engineering in Arid Area， Xi’an University of Technology， Xi’an 710048, China;Xi’an ZhuoYuan Environmental Protection Engineering Co., Ltd., Xi’an 710048, China
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| Abstract: |
| 【Objective】 Solve the problem of polluted water caused by natural water shortage in western city and constantly discharging of WWTP tail water. 【Method】 A testing site was established in a river wetland of Xi’an, and the immobilized microorganism technology was used to eliminate the black and foul sediment and improve the water quality, which created favorable conditions for the subsequent restoration of aquatic plants and the promotion of water quality. 【Result】 The concentration of CODCr, NH4+-N, TN, TP in testing site maintained at 22.0 mg/L, 5.0 mg/L, 11.5 mg/L, 1.7 mg/L, the thickness of sediment was reduced by 50%, the color of sediment changed from black to khaki, and the biochemical degradation ability of sediment was enhanced after 3 months. 【Conclusion】 The combined use of type I and II immobilized microorganisms technology can effectively solve the problem of polluted water. |
| Key words: immobilized microorganism technology; polluted water; complex microbial community; in-situ remediation |
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