Zhao Zhi-Chao, Huang Jian-Ming, Li Jian, Zhang Wei-Tang, Zhang Li-Hang, Wu Xue-Qing, Chen Yong-Zhi
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
Beijing Enterprises Water Group(China) Investment Limited, Beijing 100124, China.
Huan Jing Ke Xue. 2019 Feb 8;40(2):799-807. doi: 10.13227/j.hjkx.201807093.
A continuous flow reactor (TCFR) with 10 compartments was used to treat domestic sewage. The anaerobic compartments of TCFR were kept at 3. The anoxic compartments of TCFR were reduced from 2 to 0. Therefore, the aerobic compartments of TCFR were increased gradually from 5 to 7. The aerobic compartments were set to continual aeration in Run1 and intermittent aeration from Run2 to Run4. The aeration/non-aeration ratios were 40 min/20 min,40 min/30 min, and 40 min/40 min, respectively. The nitrification liquid reflux ratios were reduced gradually from 150% to 0%. When the average influent concentrations of COD, NH-N, TN, and PO-P were 259.34, 60.26, 64.42, and 6.10 mg·L, respectively, the corresponding effluent concentrations were 26.40, 1.03, 5.84, and 0.3 mg·L, respectively in Run4. The nitrogen removal amounts increased gradually from 192.30 mg·h in Run1 to 244.00 mg·h in Run4, and the corresponding removal rates increased from 65.40% to 95.30%. The activity of denitrifying phosphorus accumulating organisms (DPAOs) and phosphorus accumulating organisms (PAOs) increased from 36.05% and 38.20% in Run1 to 140.50% and 133.40% in Run4, respectively. Simultaneous nitrification and denitrifying phosphorus removal was achieved in TCFR by adopting intermittent aeration, which provided a reference for the reformation of sewage treatment plants.
采用一个具有10个隔室的连续流反应器（TCFR）处理生活污水。TCFR的厌氧隔室保持在3个。TCFR的缺氧隔室从2个减少到0个。因此，TCFR的好氧隔室从5个逐渐增加到7个。在运行1中好氧隔室设置为连续曝气，从运行2到运行4为间歇曝气。曝气/非曝气比分别为40分钟/20分钟、40分钟/30分钟和40分钟/40分钟。硝化液回流比从150%逐渐降低到0%。当进水COD、NH-N、TN和PO-P的平均浓度分别为259.34、60.26、64.42和6.10mg·L时，在运行4中相应的出水浓度分别为26.40、1.03、5.84和0.3mg·L。脱氮量从运行1中的192.30mg·h逐渐增加到运行4中的244.00mg·h，相应的去除率从65.40%增加到95.30%。反硝化聚磷菌（DPAOs）和聚磷菌（PAOs）的活性分别从运行1中的36.05%和38.20%增加到运行4中的140.50%和133.40%。通过采用间歇曝气在TCFR中实现了同步硝化反硝化除磷，为污水处理厂的改造提供了参考。
