CHAI Xiao-li,HAN Hong-bo,ZHANG Hong-liang,et al.Full-scale Test of HPB Process Applied in Upgrading and Capacity Expansion of a Wastewater Treatment Plant[J].China Water & Wastewater,2021,37(1 1):9-15.
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Full-scale Test of HPB Process Applied in Upgrading and Capacity Expansion of a Wastewater Treatment Plant

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 1 1 Page: 9-15 Column: Date of publication: 2021-01-01
Author(s):
CHAI Xiao-li1; 2; HAN Hong-bo2; ZHANG Hong-liang3; WU Bo-ran1; SHANG Jun-cai4; HUANG Qing5; MU Yue2; JIANG Li-an3; CHAO Zhen2; DAI Xiao-hu1
(1. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; 2. Hunan Sanyou Environmental Protection Co. Ltd., Changsha 410205, China; 3. North China Municipal Engineering Design & Research Institute Co. Ltd., Tianjin 300381, China; 4. Changsha Water Group Co. Ltd., Changsha 410015, China; 5. Hunan Keyou Environmental Protection Co. Ltd., Changsha 410205, China)
Keywords:
high concentration powder carrier bio-fluidized bed; two independent sludge age; nitrogen and phosphorus removal
Abstract:
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 (KZ≥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).
Last Update: 2021-01-01