Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (8): 139-145.

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Effects of Locations of Biological Filter Added to Conventional Process on Water Supply

Lu Shao-ming  Li Dong  Hu Chang-hao   

  1. School of Environmental Science and Engineering,South China University of Technology,Guangzhou 510006,Guangdong,China
  • Received:2011-11-03 Revised:2012-02-21 Online:2012-08-25 Published:2012-07-01
  • Contact: 陆少鸣(1958-) ，男，教授，主要从事给水技术与水污染控制研究． E-mail:lushaom@163.com
  • About author:陆少鸣(1958-) ，男，教授，主要从事给水技术与水污染控制研究．
  • Supported by:

    国家水体污染控制与治理科技重大专项( 2009ZX07423-003)

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Abstract:

In this investigation,engineering cases and pilot-scale experiments were used to compare three kinds of processes with different locations of biological filters added to the conventional water supply process,namely,prepositioned biological filter ( HUBAF) ,mid-positioned biological filter ( UBACF) and post-positioned down-flow biological activated carbon filter ( DBACF) . The results show that ( 1) the three biological treatment processes all effectively improve the removal efficiency of organic matters; ( 2) DBACF generally removes NH3-N with an efficiency of not more than 1.5 mg /L,but microorganism leak may occur in subtropical areas; ( 3) HUBAF is of a higher NH3-N removal efficiency,but it has to suffer from the impacts of high turbidity,shellfish and algae in the raw water;and ( 4) UBACF possesses the advantages of both HUBAF and DBACF,so it is more suitable for new waterworks.

Key words: water supply, micro-polluted source water, conventional treatment, biological filter, advanced treatment, biological pretreatment

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