GAOChen-chen,MUYing,LIUYu,et al.Selection of Conventional Indicators Based on Quantitative Diagnosis of Sewage Pipe Network Mixed Flow[J].China Water & Wastewater,2023,39(8):11-16.
Selection of Conventional Indicators Based on Quantitative Diagnosis of Sewage Pipe Network Mixed Flow
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第8期
Page:
11-16
Column:
Date of publication:
2023-04-17
- Keywords:
- sewage collection; clean water and sewage mixed flow; chemical mass balance; quantitative diagnosis
- Abstract:
- The inflow and penetration of clean or slightly-polluted water in the urban sanitary sewer system is an important reason for low influent pollutant concentration and high wastewater treatment demand in the wastewater treatment plant, which will lead to lower operation efficiency of wastewater collection and treatment facilities. Taking the commonly used chemical mass balance model (CMBM) as a reference, 36 combined indicators consisting of conventional wastewater indicators were adopted to select the appropriate indicators to quantify the mixing ratio of sanitary sewer systems. The results demonstrated that the combination of conductivity and other conventional wastewater indicators showed higher sensitivity and stability in the calculation of the proportion of sewage. The conductivity indicator has the advantages of relatively stable results, simple and fast measurement, and low test cost. It is suggested that the combination indicator of conductivity should be preferred to quantitative diagnosis of clean water mixing inflow and penetrating in sewage systems.
Last Update:
2023-04-17