title: Stochastic modeling of total suspended solids (TSS) in urban areas during rain events.
abstract: The load of total suspended solids (TSS) is one of the most important parameters for evaluating wet-weather pollution in urban sanitation systems. In fact, pollutants such as heavy metals, polycyclic aromatic hydrocarbons (PAHs), phosphorous and organic compounds are adsorbed onto these particles so that a high TSS load indicates the potential impact on the receiving waters. In this paper, a stochastic model is proposed to estimate the TSS load and its dynamics during rain events. Information on the various simulated processes was extracted from different studies of TSS in urban areas. The model thus predicts the probability of TSS loads arising from combined sewer overflows (CSOs) in combined sewer systems as well as from stormwater in separate sewer systems in addition to the amount of TSS retained in treatment devices in both sewer systems. The results of this TSS model illustrate the potential of the stochastic modeling approach for assessing environmental problems.
authors.affiliation: Swiss Federal Institute for Environmental Science and Technology (EAWAG), Uberlandstrasse 133, 8600 übendorf, Switzerland. luca.rossi@eawag.ch
authors.forename: Luca
authors.initials: L
authors.lastname: Rossi
authors.forename: Vladimir
authors.initials: V
authors.lastname: Krejci
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Rauch
authors.forename: Simon
authors.initials: S
authors.lastname: Kreikenbaum
authors.forename: Rolf
authors.initials: R
authors.lastname: Fankhauser
authors.forename: Willi
authors.initials: W
authors.lastname: Gujer
mesh_terms: D011336:Probability; D011891:Rain; D012722:Sewage; D013269:Stochastic Processes; D014504:Urban Health; D014874:Water Pollutants, Chemical
chemical_list: D012722:Sewage; D014874:Water Pollutants, Chemical