低碳源污水的好氧颗粒污泥脱氮除磷中试研究  

Pilot Study on Nitrogen and Phosphorus Removal from Low Carbon Source Sewage by Aerobic Granular Sludge

作　　者：吴远远 郝晓地[2] 许雪乔 林甲 江瀚 WU Yuan-yuan;HAO Xiao-di;XU Xue-qiao;LIN Jia;JIANG Han(Sino-Dutch R&D Centre for Future Wastewater Treatment Technologies,Beijing Capital Co.Ltd.,Beijing 100044,China;Beijing Advanced Innovation Centre of Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京首创股份有限公司中-荷未来污水处理技术研发中心,北京100044 [2]北京建筑大学北京未来城市设计高精尖创新中心,北京100044

出　　处：《中国给水排水》2019年第23期12-16,共5页China Water & Wastewater

摘　　要：我国城镇生活污水具有碳源浓度低、难以满足脱氮除磷需求的特点,因此往往需要通过投加碳源和除磷药剂才能实现去除营养盐的目的。鉴于此,采用好氧颗粒污泥技术,基于北京首创某污水处理厂的低碳源市政污水,进行颗粒污泥培养及营养物去除中试研究。结果表明,在进水COD平均浓度约为150 mg/L的条件下成功培养出了好氧颗粒污泥,且颗粒污泥比例可达到42%左右,同时可实现对N、P的有效去除。中试装置持续运行了160 d,除雨季水量波动、进水COD浓度下降导致除磷效果波动外,在旱季稳定运行条件下出水N、P浓度均可达到GB 18918-2002的一级A排放标准。与该污水厂既有的CAST工艺相比,好氧颗粒污泥工艺的容积负荷要高出2.5倍,而且节省投加的除磷药剂可使处理成本降低0.088元/m^3。Urban domestic sewage in China has the characteristics of low biodegradable substrate concentration,which is difficult to meet the demand for nitrogen and phosphorus removal.Therefore,it is often necessary to add carbon source and phosphorus removal agents to achieve the removal of nutrients.In view of this,aerobic granular sludge(AGS)was applied to treat low carbon source sewage in a WWTP,and a pilot study on AGS cultivation and nutrients removal was carried out.AGS could be successfully formed when the average COD concentration of the influent was about 150 mg/L,the proportion of AGS could reach 42%,and nitrogen and phosphorus could be effectively removed.Except for fluctuation of phosphorus removal caused by the fluctuation of sewage volume and the decrease of influent COD concentration in wet season,the effluent nitrogen and phosphorus concentration could meet the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002)during the stable operation period in dry season.Compared with the existing CAST process of the WWTP,the volumetric load of AGS process was 2.5 times higher,and the treatment cost could be reduced by 0.088 yuan/m^3 by saving the dosage of phosphorus removal agent.

关 键 词：好氧颗粒污泥 低碳源污水 营养物去除 污泥沉降比 

分 类 号：TU992[建筑科学—市政工程]