DONGJin-bo,ZHANGJia-quan,WUZhi-guo,et al.Evaluation of Total Maximum Daily Load Based on Coupling of Multiple Water Environment Models[J].China Water & Wastewater,2023,39(23):118-123.
Evaluation of Total Maximum Daily Load Based on Coupling of Multiple Water Environment Models
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第23期
Page:
118-123
Column:
Date of publication:
2023-12-01
- Abstract:
- Under the background of sponge city construction, a model for coupling subcatchment with water quantity and quality of river and lake was established to simulate and evaluate the total maximum daily load (TMDL) that could be distributed in each subcatchment under the condition that the water environment quality of Jinshan Lake in Zhenjiang met the surface water standard. The water environment models included the highly developed subcatchment model (PCSWMM), the low developed subcatchment model (HSPF) and the river and lake model (EFDC). After calibrated and verified by the collected water quantity and quality data, the model evaluated the change of TMDL in the sponge city construction. The simulation results of subcatchment model showed that the sponge city construction demonstrated the load reduction rates of over 90%, 67% and 63% for non-point source pollutants COD, NH3-N and TP, respectively. The simulation results of the coupling model showed that the current pollution load of Jinshan Lake reached the target load and there was no need for additional reduction.
Last Update:
2023-12-01