Volume 8 Issue 5
Sep.  2018
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LIU Cuimian, DOU Hong, JIANG Jianbiao, GAO Yuan, CHANG Qing. Study on ammonia emission of sewage treatment process of a pharmaceutical enterprise in Shijiazhuang[J]. Journal of Environmental Engineering Technology, 2018, 8(5): 551-555. doi: 10.3969/j.issn.1674-991X.2018.05.073
Citation: LIU Cuimian, DOU Hong, JIANG Jianbiao, GAO Yuan, CHANG Qing. Study on ammonia emission of sewage treatment process of a pharmaceutical enterprise in Shijiazhuang[J]. Journal of Environmental Engineering Technology, 2018, 8(5): 551-555. doi: 10.3969/j.issn.1674-991X.2018.05.073
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Study on ammonia emission of sewage treatment process of a pharmaceutical enterprise in Shijiazhuang

doi: 10.3969/j.issn.1674-991X.2018.05.073

  • 1. Shijiazhuang Environment Supervision Center, Shijiazhuang 050022, China

  • 2. Shijiazhuang Environmental Monitoring Center, Heibei Province, Shijiazhuang 050022, China

  • Received Date: 2018-04-23
  • Publish Date: 2018-09-20
    Abstract
  • In order to study on ammonia emission characteristics of sewage treatment process of a pharmaceutical enterprise, waste gas samples were collected from several wastewater treatment units and waste gas discharge outlet in sewage treatment progress of pharmaceutical industry to analyze NH3 emission characteristics. The study results showed that:the maximum NH3 emission appeared at hydrolysis acidification unite, the point concentration reached 62.89 mg∕m 3,emission reached 3 360 mg∕m 3 for each treatment of 1 m 3 sewage, The sewage treatment process of each unit of ammonia amount was 0.97 kg∕h, the conversion for each treatment 1 m 3wastewater, ammonia production 9 312 mg∕m 3, after the treatment of waste gas discharged into the environment ammonia was 0.25 kg∕h, emission reached 2 400 mg∕m 3 for each treatment of 1 m 3 sewage, ammonia removal rate was 74.2%, the emission of ammonia gas was obviously reduced after the treatment of exhaust gas. Waste gas treatment in the southern and northern areas adopts the technology of caustic wash+oxidation+washing. The removal rate of ammonia was 93.3% and 83.1%, The ammonia removal rate of the waste gas treatment facility in the biological zone is 39.1%. Caustic wash+oxidation+washing has better effect than biotrickling filter in the removal the ammonia.

     

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