Abstract:
In order to control the odours caused by H2S produced from anaerobic microorganism in sewers,measurement should be made firstly,and the characteristics of H2S produced in sewers should be understood.In this paper,the concentration of H2S in field manhole including dormitory,residential and mess hall was monitored.The results indicated that H2S spilled from sewers had the characteristic of period,and subjected to quadratic curve estimation and normal distribution approximatively by fitting of Boltzmann function and analyzing of regression analysis.In the same day,with the flow velocity increasing,the concentration of H2S was higher.Different H2S concentration was engendered in different sewage.These characteristics could improve the foundation for controlling and administering the odours caused by H2S in sewers.