We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Influence of solids contained in septic tank effluent on lifespan of soil infiltration systems.
- Authors
Spychała, Marcin; Pawlak, Maciej; Makowska, Małgorzata
- Abstract
The aim of the study was to assess the clogging time according to several decisive parameters and conditions. Mathematical model describing solids' accumulation and decomposition in a soil filter as a function of time and, for example, total suspended solids (TSS) load in septic tank effluent (STE) was presented. The calculation procedure was based on the Kozeny-Carman equation. The experimental results of the hydraulic gradient were used to estimate the infiltration velocity. The empirical data of TSS concentrations in STE were taken from the literature and own study. The analyses of the factors affecting the time of clogging of the soil infiltration system (TSS concentration, biomass density, hydraulic load, clogging layer depth) were shown. Besides the decisive factors of clogging such as TSS concentration, water content and distribution of solids in the vertical cross-section of the filter were identified also as important factors. Due to the fact that the only controllable factor is the concentration of the suspension, one should strive to use highly efficient septic tanks or polishing systems in order to obtain the lowest possible concentrations of total suspended solids in the wastewater entering the soil drainage system.
- Subjects
SEPTIC tanks; SOIL infiltration; TOTAL suspended solids; WATER distribution; FACTOR analysis
- Publication
Desalination & Water Treatment, 2020, Vol 181, p204
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2020.25101