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| The use of immobilized microorganism reactor-integrated constructed wetland (IMR-ICW) system for rural comprehensive wastewater treatment |
| Received:December 16, 2016 |
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| KeyWord:integrated industrial wastewater;degradation bacteria;immobilized microorganism reactor (IMR);constructed wetland;toxic organic compounds |
| Author Name | Affiliation | E-mail | | MAN Ying | Research Center of Hydrobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China | | | TAO Ran | Research Center of Hydrobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
Engineering Research Center of Tropic and Subtropic Aquatic Ecological Engineering, Ministry of Education, Guangzhou 510632, China | | | YANG Yang | Research Center of Hydrobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
Engineering Research Center of Tropic and Subtropic Aquatic Ecological Engineering, Ministry of Education, Guangzhou 510632, China | yangyang@scies.org | | WAN Xiang | Research Center of Hydrobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China | | | GUO Jing-jing | Research Center of Hydrobiology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China | |
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| Abstract: |
| Combined with integrated constructed wetlands (ICW), an immobilized microorganism reactor (IMR) that contained a broad spectrum and highly efficient degradation bacteria Lysinibacillus sp. FS1 (CCTCC M 2013561) were used to treat rural comprehensive wastewater in industrial cluster towns. The results showed that the immobilized microorganism reactor-integrated constructed wetland (IMR-ICW) system had high removal efficiencies of chemistry oxygen demand (COD), total nitrogen (TN), ammonium nitrogen (NH3-N), total phosphorous (TP) as well as total suspended solids (TSS), with average removal rates of 71.5%, 59.5%, 56.9%, 46.0% and 82.9%, respectively. Meanwhile, the effluent quality of COD and TSS met the first class A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002). Furthermore, the results of GC-MS indicated that the removal rates for ten of main organic pollutants in comprehensive wastewater were over 50% by the IMR, and it reached 81.2% and 95.6% for toxic organic compounds 3, 4-dichlorophenol and phenylacetate especially. The detoxification and harm-reduction abilities of IMR could relieve the ecological pressure on constructed wetlands, which significantly increased the removal efficiencies of COD (P<0.01), TN (P<0.01) and NH3-N (P<0.05) in the combined process. |
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