利用活性初沉池提高传统初沉池出水碳源的研究  

Activated Primary Sedimentation Tank for Improving Carbon Source in Effluent of Traditional Primary Sedimentation Tank

作　　者：王淑珍[1] 郭玉梅 邢美荣 王先宝[1] 金鹏康[1] 吴蔓莉[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]昆明滇池水务股份有限公司,云南昆明650228

出　　处：《中国给水排水》2014年第3期1-4,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2011ZX07302-001);陕西省科技统筹创新工程计划项目(2011KTZB03-03-03);新世纪优秀人才支持计划项目(NCET-12-1043);陕西省创新团队项目(IRT2013KCT-13)

摘　　要：采用生物处理工艺的城市污水处理厂,其传统初沉池出水的碳源难以满足后续生物脱氮除磷的需求,但是取消初沉池会增大生物池的曝气量及能耗。因此提出了一种减少碳源流失的活性初沉池新工艺,并通过中试分析了不同转速及回流比下活性初沉池的出水效果。当活性初沉池的转速由40 r/min增加到80 r/min、回流比由10%增加到30%时,其出水的SCOD、VFA、SCOD/TN、SCOD/TP值都有不同程度的提高。在转速为60 r/min、回流比为20%时,活性初沉池出水的SCOD、VFA、SCOD/TN、SCOD/TP值分别较进水提高了34.00%、30.35%、70.73%、63.15%。The carbon source in the effluent of a traditional primary sedimentation tank in a wastewater treatment plant was difficult to meet the demand for subsequent biological nutrient removal, but cancellation of the primary sedimentation tank could increase the aeration volume and energy con- sumption of biological tank. Therefore, an activated primary sedimentation tank which could decrease or- ganic matter loss was proposed. Through a pilot-scale study, the effluent quality was investigated with dif- ferent rotating speeds and different reflux ratios. The results showed that when the rotating speed of acti- vated primary sedimentation tank was increased from 40 to 80 r/rain and the reflux ratio was increased from 10% to 30%, the SCOD, VFA, SCOD/TN and SCOD/TP in the effluent were all increased. When the rotating speed was 60 r/min, and the reflux ratio was 20%, the values of SCOD, VFA, SCOD/TN and SCOD/TP in the effluent were 34.00%, 30.35%, 70.73% and 63.15% respectively higher than those in the influent.

关 键 词：传统初沉池 活性初沉池 碳源 回流比 

分 类 号：X703[环境科学与工程—环境工程]