改良 Bardenpho 工艺的设计与运行效果分析

济南某污水处理厂工程设计规模为4万m3/d，二级处理采用改良Bardenpho工艺，同时通过设置多点进水、碳源多点投加，前端设置预缺氧池，增设二级缺氧/好氧可变段等措施，为污水厂提供多种工艺运行模式。运行结果表明:改良Bardenoho工艺对CODCr、NH3-N、TN、TP等污染物去除率分别达到了94.98%、98.35%、93.95%、79.68%，出水CODCr、NH3-N、TN、TP分别为11.7、0.68、3.03、0.77 mg/L，除TP尚需通过深度处理强化去除外，其余指标均优于设计出水水质。

Analysis on Design and Operation Effect of Modified Bardenpho Process

The design scale of a wastewater treatment plant (WWTP) project in Jinan is 40 000 m3/d, and the improved Bardenpho process is used for the secondary treatment. At the same time, by setting up the multi-point inflow and the multi-point carbon addition, the pre-anaerobic is constructed at the front end, and the secondary anaerobic/aerobic changeable section is added, which provide the multiple technological operation modes for WWTP. The operation result shows that the pollutant removal rates of CODCr, NH3-N, TN and TP by the modified Bardenoho process are 94.98%, 98.35%, 93.95% and 79.68% respectively, and the effluent CODCr , NH3-N, TN and TP are 11.7, 0.68, 3.03 and 0.77 mg/L respectively. Except for TP, which need to be enhanced by the advanced treatment, and the other indexes are all better than the designed effluent qualities.