In:
Water Science and Technology, IWA Publishing, Vol. 76, No. 10 ( 2017-11-23), p. 2753-2763
Kurzfassung:
Hydrogen sulfide (H2S) represents one of the main odorant gases emitted from sewer networks. A mathematical model can be a fast and low-cost tool for estimating its emission. This study investigates two approaches to modeling H2S gas transfer at a waterfall in a discharge manhole. The first approach is based on an adaptation of oxygen models for H2S emission at a waterfall and the second consists of a new model. An experimental set-up and a statistical data analysis allowed the main factors affecting H2S emission to be studied. A new model of the emission kinetics was developed using linear regression and taking into account H2S liquid concentration, waterfall height and fluid velocity at the outlet pipe of a rising main. Its prediction interval was estimated by the residual standard deviation (15.6%) up to a rate of 2.3 g H2S·h−1. Finally, data coming from four sampling campaigns on sewer networks were used to perform simulations and compare predictions of all developed models.
Materialart:
Online-Ressource
ISSN:
0273-1223
,
1996-9732
DOI:
10.2166/wst.2017.428
Sprache:
Englisch
Verlag:
IWA Publishing
Publikationsdatum:
2017
ZDB Id:
764273-8
ZDB Id:
2024780-1
SSG:
14
