低碳源污水的奥贝尔氧化沟脱氮除磷影响因素分析
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摘要
温州市中心片污水处理厂采用奥贝尔氧化沟工艺,近年来随着进水碳源浓度的降低,生物脱氮除磷效率也不断下降。结合该厂的实际运行数据,分析了沿程各构筑物对TN、TP的去除效果。由于长期处理低碳源污水,生物段各构筑物的实际运行工况与原设计功能有较大差异。影响脱氮除磷效果的限制因素是碳源不足、预处理段充氧、回流污泥携带硝态氮等。对此可通过控制曝气沉砂池的曝气强度、优化和调整氧化沟的溶解氧浓度、污泥回流比等加以解决。
The Orbal oxidation ditch process was adopted in Wenzhou Central Sewage Treatment Plant. With the decrease of influent carbon source,the efficiency of biological nitrogen and phosphorus removal also decreased in the past few years. Based on the actual operation data of the plant,the removal effect of TN and TP along the process was analyzed. Because of the long-term treatment of sewage with low carbon source,there were large differences between the actual operating conditions of each biological structure and the function of the original design. The limiting factors of nitrogen and phosphorus removal were the low carbon source,the oxygenation of the pretreatment section,and the nitrate nitrogen in return sludge,etc. These problems could be solved by controlling the aeration intensity of aerated grit chamber,optimizing and adjusting dissolved oxygen concentration of oxidation ditch and sludge return ratio,and so on.
The Orbal oxidation ditch process was adopted in Wenzhou Central Sewage Treatment Plant. With the decrease of influent carbon source,the efficiency of biological nitrogen and phosphorus removal also decreased in the past few years. Based on the actual operation data of the plant,the removal effect of TN and TP along the process was analyzed. Because of the long-term treatment of sewage with low carbon source,there were large differences between the actual operating conditions of each biological structure and the function of the original design. The limiting factors of nitrogen and phosphorus removal were the low carbon source,the oxygenation of the pretreatment section,and the nitrate nitrogen in return sludge,etc. These problems could be solved by controlling the aeration intensity of aerated grit chamber,optimizing and adjusting dissolved oxygen concentration of oxidation ditch and sludge return ratio,and so on.
引文
[1]李若谷,张雁秋,孙艳,等.低碳源污水中ECOSUNIDE工艺的碳源利用分析[J].中国给水排水,2013,29(13):97-100.
[2]郝晓地,衣兰凯,付昆明.侧流磷回收强化低碳源污水脱氮除磷效果的模拟与实验研究[J].环境工程学报,2013,7(1):231-236.
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[7]刘智晓,Gert Petersen,张伟,等.低碳源条件下利用侧流活性污泥水解技术强化生物脱氮除磷[J].给水排水,2013,39(1):53-57.
[8]王盈盈,于海琴,赵刚,等.倒置A2/O-MBR工艺处理低碳源污水脱氮除磷效果研究[J].水处理技术,2013,39(6):77-79.
[9]杨庆娟,王淑莹,刘莹,等.污泥回流比对A2N反硝化除磷工艺脱氮除磷的影响[J].中国给水排水,2008,24(13):37-41.
[10]令云芳,王淑莹,王伟,等.厌氧段HRT对A2N工艺反硝化除磷脱氮效果的影响[J].水处理技术,2006,32(10):44-47.
[11]张智,陈杰云,李勇,等.处理低碳源污水的倒置A2/O工艺强化脱氮技术研究[J].中国给水排水,2009,25(13):7-9.
[12]高守有,彭永臻,王淑莹,等.Orbal氧化沟生物脱氮的中试研究[J].中国给水排水,2005,21(8):5-9.
[13]郭春艳,王淑莹,李夕耀,等.聚磷菌和聚糖菌的竞争影响因素研究进展[J].微生物学通报,2009,36(2):267-275.
[2]郝晓地,衣兰凯,付昆明.侧流磷回收强化低碳源污水脱氮除磷效果的模拟与实验研究[J].环境工程学报,2013,7(1):231-236.
[3]孙慧,郑兴灿,孙永利,等.外加碳源对改良A2/O工艺反硝化除磷的影响[J].中国给水排水,2010,26(13):82-85.
[4]黄健,汤利华,唐玉朝,等.化学除磷比值对低碳源污水脱氮除磷的影响[J].中国给水排水,2012,28(3):94-97.
[5]郝晓地,衣兰凯,王克巍.强化低碳源污水生物除磷的技术方式探究[J].中国给水排水,2012,28(1):95-99.
[6]吉芳英,郭倩,金展,等.低碳源污水的强化反硝化除磷研究[J].中国给水排水,2012,28(13):7-10.
[7]刘智晓,Gert Petersen,张伟,等.低碳源条件下利用侧流活性污泥水解技术强化生物脱氮除磷[J].给水排水,2013,39(1):53-57.
[8]王盈盈,于海琴,赵刚,等.倒置A2/O-MBR工艺处理低碳源污水脱氮除磷效果研究[J].水处理技术,2013,39(6):77-79.
[9]杨庆娟,王淑莹,刘莹,等.污泥回流比对A2N反硝化除磷工艺脱氮除磷的影响[J].中国给水排水,2008,24(13):37-41.
[10]令云芳,王淑莹,王伟,等.厌氧段HRT对A2N工艺反硝化除磷脱氮效果的影响[J].水处理技术,2006,32(10):44-47.
[11]张智,陈杰云,李勇,等.处理低碳源污水的倒置A2/O工艺强化脱氮技术研究[J].中国给水排水,2009,25(13):7-9.
[12]高守有,彭永臻,王淑莹,等.Orbal氧化沟生物脱氮的中试研究[J].中国给水排水,2005,21(8):5-9.
[13]郭春艳,王淑莹,李夕耀,等.聚磷菌和聚糖菌的竞争影响因素研究进展[J].微生物学通报,2009,36(2):267-275.
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