HPB工艺用于污水厂提标扩容改造的生产性试验研究  

Full-scale Test of HPB Process Applied in Upgrading and Capacity Expansion of a Wastewater Treatment Plant

作　　者：柴晓利[1,2] 韩红波 张宏亮 武博然 尚俊材 黄庆 牟悦 姜立安 巢真 戴晓虎 CHAI Xiao-li;HAN Hong-bo;ZHANG Hong-liang;WU Bo-ran;SHANG Jun-cai;HUANG Qing;MU Yue;JIANG Li-an;CHAO Zhen;DAI Xiao-hu(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;Hunan Sanyou Environmental Protection Co.Ltd.,Changsha 41Q2Q5,China;North China Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300381,China;Changsha Water Group Co.Ltd.,Changsha 410015,China;Hunan Keyou Environmental Protection Co.Ltd.,Changsha 410205,China)

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]湖南三友环保科技有限公司,湖南长沙410205 [3]中国市政工程华北设计研究总院有限公司,天津300381 [4]长沙水业集团有限公司,湖南长沙410015 [5]湖南科友环保有限公司,湖南长沙410205

出　　处：《中国给水排水》2021年第1期9-15,共7页China Water & Wastewater

基　　金：湖南省科技厅2019年度战略性新兴产业科技攻关与重大科技成果转化项目(2019GK4004)。

摘　　要：基于HPB工艺中试研究结果,为进一步验证HPB工艺在提标扩容实际生产工况下的处理效果和可实施性,在湖南某水质净化厂进行了生产性试验。试验期间,在总进、出水量保持不变的条件下,进行HPB工艺改造,将现状两组生化池(A2/O)切换为单组运行,处理水量提升1倍,总停留时间缩短为5. 0 h以下。通过复合粉末载体的投加及排泥过程中载体和附着微生物的回收循环,实现了"双泥龄",克服了脱氮菌和除磷菌的污泥龄矛盾,提高了脱氮除磷效率。试验结果表明,生化池混合液浓度控制在10 000 mg/L左右,在厂区进水水量和水质变化较大(K_(Z)≥1. 3)、水温低于冬季设计温度时,HPB工艺系统运行稳定,主要出水水质指标COD <30 mg/L、NH3-N <1. 5 mg/L、TN <10 mg/L、TP <0. 3 mg/L,能够实现高效、稳定达标。Based on pilot test results of the high concentration powder carrier bio-fluidized bed( HPB) process,the full-scale test was carried out in a wastewater treatment plant( WWTP) in Hunan Province,which aimed to further verify the performance and feasibility of HPB process under actual production condition of upgrading and capacity expansion. During the test period,the current process was transformed to HPB process with no change of the total amount of influent and effluent,and the current two biochemical tanks( A2/O) were switched to a single group operation,in which the treatment capacity doubled and the total hydraulic residence time was shortened to less than 5. 0 h. Through adding composite powder carriers and recycling carriers and biofilm attached on them during sludge discharge process,the two independent sludge age was realized,which overcame the contradiction of sludge age between nitrogen and phosphorus removal bacteria and improved the removal efficiency of nitrogen and phosphorus. The full-scale test showed that the concentration of mixed liquid suspended solid could be controlled at 10 000 mg/L. When the quantity and quality of influent of the WWTP changed greatly( K_(Z)≥1. 3) and the water temperature was lower than the design temperature in winter,the HPB process system operated stably,and the main water quality indexes of the effluent could efficiently and stably meet the discharge standard( COD < 30 mg/L,NH3-N < 1. 5 mg/L,TN < 10 mg/L and TP < 0. 3 mg/L).

关 键 词：高浓度复合粉末载体生物流化床 双泥龄 脱氮除磷 

分 类 号：TU92[建筑科学—建筑设计及理论]