OPERATION DIAGNOSIS AND CARBON SOURCE OPTIMIZATION OF YONGCHUAN WASTEWATER TREATMENT PLANT USING PROCESS MODELING

WANG Qian; DENG Qiaosi; WU Wei; AI Fangyi; DU Junli; ZHANG Yuanhe; BAI Fan; LEI Mingming; QU Ruihua; GAN Yang; DU Weiwei

doi:10.13205/j.hjgc.202206028

Volume 40 Issue 6

Sep. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(6): 219-225

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WANG Qian, DENG Qiaosi, WU Wei, AI Fangyi, DU Junli, ZHANG Yuanhe, BAI Fan, LEI Mingming, QU Ruihua, GAN Yang, DU Weiwei. OPERATION DIAGNOSIS AND CARBON SOURCE OPTIMIZATION OF YONGCHUAN WASTEWATER TREATMENT PLANT USING PROCESS MODELING[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(6): 219-225. doi: 10.13205/j.hjgc.202206028

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OPERATION DIAGNOSIS AND CARBON SOURCE OPTIMIZATION OF YONGCHUAN WASTEWATER TREATMENT PLANT USING PROCESS MODELING

doi: 10.13205/j.hjgc.202206028

1. Chongqing Yuxi Water Co., Ltd, Chongqing 402160, China;
2. Sichuan Wentao Engineering Technology Co., Ltd, Chengdu 610000, China;
3. Chongqing Yuxi Water Co., Ltd, Yongchuan Branch, Chongqing 402160, China;
4. Chongqing Yuantong Electronic Technology Development Co., Ltd, Chongqing 400000, China

Received Date: 2021-12-15
Available Online: 2022-09-01
Publish Date: 2022-09-01

Abstract

Abstract

The whole plant models were set up for Phase Ⅰ and Phase Ⅱ processes at Yongchuan wastewater treatment plant (WWTP) to evaluate the operation conditions and to determine the potential optimization strategies.The historical data for 1.5 years and supplementary experimental data of Chongqing Yongchuan sewage treatment plant were collected,analyzed and used for the model calibration.And its influent water quality characteristics,operation mode and biochemical reaction state were determined.The digital simulation based on the mechanism model was completed for its annual average state and duration fluctuation state.The historical and current operation conditions of the WWTP was assessed for the potential problems and risks.The optimization strategies including operation improvement and external carbon reduction were determined using the calibrated models.Through the adjustment of operation parameters,the risk of overload of secondary sedimentation tank and uneven distribution of sludge in the system could be effectively avoided with operating at a reasonable sludge age and using inlet water quality characteristics,it could reduce the addition of additional carbon source and reagent on the premise that the effluent quality was stable and up to standard.The quantitative evaluation of the external carbon addition was carried out under average,extreme,and dynamic conditions,respectively.As the result of dynamic simulation analysis:with the improvement on operation parameters such as recycle flow and sludge wastage,the annual average methanol addition can be reduced to 80% for Phase Ⅰ and 60% for Phase Ⅱ,respectively,as compared to the actual dosage at WWTP.
- municipal wastewater,
- wastewater treatment,
- BioWin,
- process modelling,
- operation optimization,
- external carbon source

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References

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