| Author Name | Affiliation | | Fang Fang | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China | | Gang Wu | Shuangliang Group Co.Ltd.,Jiangyin 214400,Jiangsu,China | | Hongjun Han | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China | | Mingnin Ma | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China |
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| Abstract: |
| The improvement effect of bioaugmentation with phenol degrading bacteria (PDB) on pollutants removal and chemicals consumption was investigated in a full-scale Lurgi coal gasification wastewater (LCGW) treatment plant. Bioaugmentation with PDB applied in biological contact oxidation tank(BCOT) was carried out in summer to prevent the limitation of low temperature on the bacteria activity. After augmentation, the removal of COD and total phenol (TPh) was significantly enhanced, with efficiencies from 78.5% and 80% to 82.3% and 86.6% in BCOT, respectively. The improvement could also be detected in further processes, including anoxic-oxic, coagulation sedimentation and biological aerated filter, with COD and TPh removal efficiencies increment from 70.1%, 24.7% and 53.4% to 73.9%, 29.1% and 55.9%, from 67.1%, 20% and 25% to 72.5%, 25% and 32%, respectively. In addition, chemicals used for denitrification and coagulation sedimentation showed considerable reduction after bioaugmentation, with methanol, coagulant, coagulant aid and bleaching dosage from 100.0,0.0,0.0 and 60.0 mg/L to 85.0,0.6,7.8 and 45.7 mg/L, respectively. Therefore, bioaugmentation with PDB can be a viable alternative for LCGW treatment plant in pollutants removal and chemicals saving. |
| Key words: bioaugmentation phenol degrading bacteria Lurgi coal gasification wastewater treatment |
| DOI：10.11916/j.issn.1005-9113.16153 |
| Clc Number:X703 |
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| Descriptions in Chinese: |
| 降酚细菌强化鲁奇气化废水处理的研究 方 芳1，吴 刚2，韩洪军1，马明敏1 （1. 哈尔滨工业大学 市政环境工程学院，哈尔滨 150090; 2. 双良集团有限公司,江苏 江阴 214400） 创新点说明：1）首次将降酚菌剂应用于鲁奇废水实际工程应用； 2）发现降酚菌剂对鲁奇废水处理工艺污染物去处具备强化作用； 3）提出降酚菌剂可显著降低鲁奇废水处理工艺的药剂用量。 研究目的： 为强化鲁奇气化废水厂污染物去除和药剂节省提供一种经济可行的方法。 研究方法： 降酚菌剂在夏季于鲁奇气化废水处理工程单元接触氧化池内实施强化。通过测定实际工程中接触氧化以及后续缺氧-好氧（A/O）、混凝沉淀（CS）、曝气生物滤池（BAF）污染物去处率变化，考察生物强化技术对污染物去处的强化作用。通过测定废水处理过程中甲醇、混凝剂、助凝剂、脱色剂用量变化，考察生物强化技术在废水处理过程中药剂节省作用。 结果： 强化后，接触氧化池对COD和总酚去除率分别由78.5%、80%提高至82.3%、86.6%。在后续缺氧-好氧（A/O）、混凝沉淀（CS）、曝气生物滤池（BAF）也可以观察到这种强化作用。另外，强化后用于反硝化和混凝沉淀的药剂量显著降低，甲醇、混凝剂、助凝剂、脱色剂用量分别由100mg/L、864mg/L、619mg/L、518.8mg/L降低至85mg/L、810mg/L、500mg/L、395.5mg/L。 结论： 对于鲁奇气化废水厂污染物强化去除和药剂节省，降酚菌剂生物强化技术是一个可行的选择。 关键词：生物强化；降酚细菌；鲁奇气化废水 |
