生物建模在污水处理厂问题诊断与运行优化中的应用

为应对国内污水处理厂普遍遇到的稳定达标难、能耗药耗高等运营技术问题，以泗县污水处理厂改良型氧化沟工艺为案例，利用系统性三步数据清洗方法，基于Biowin-ASDM模型完成了全厂生物建模与模型校正。校正后的模型可识别污水处理厂常规工况下的运行问题，基于生物模型提出的运行优化方案切实可行。该方法仅通过常规运行参数的原位调整，即可在出水稳定达标的前提下，进一步实现污泥脱水药剂减量使用，平均每日药剂投加量环比节省至少46%，生产电耗节省至少840 kW·h·d^-1。该案例可为生物建模在国内污水处理厂问题诊断与运行优化应用中提供参考。

Application of biological modeling in problem diagnosis and operation optimization of wastewater treatment plants

To address the difficulty in meeting effluent discharge standard stably, high energy consumption, and high chemical dosage of domestic wastewater treatment plants, a case study of improved oxidation ditch process of Sixian wastewater treatment plant (WWTP) is carried out. The modeling procedure and model calibration of the WWTP are completed based on the Biowin-ASDM model by applying the systematic three-step data cleaning method. Benefited from the reliable biological modeling technology, the calibrated model can correctly identify the operation problems of WWTP under normal conditions, and the operation optimization plan based on the biological model is feasible. Only through in-situ adjustment of operational parameters, the consumption of sludge dewatering chemicals can be saved up to 46% and the reduction of power consumption is over 840 kW·h·d−1, both on the basis of providing stable effluent quality. The practical application results show that the biological modeling has guiding significance in the problem diagnosis and operation optimization of domestic WWTPs.