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The Effect of Suspended Solids in Wastewater on Soil Hydraulic Conductivity: I. Suspended Solids Labelling Method
Author(s) -
Vinten A. J. A.,
Mingelgrin U.,
Yaron B.
Publication year - 1983
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1983.03615995004700030002x
Subject(s) - suspended solids , volatile suspended solids , total suspended solids , total dissolved solids , effluent , soil water , leaching (pedology) , suspension (topology) , hydraulic conductivity , wastewater , desorption , chemistry , environmental science , residence time (fluid dynamics) , environmental engineering , soil science , adsorption , geology , geotechnical engineering , mathematics , chemical oxygen demand , organic chemistry , homotopy , pure mathematics
Abstract A method for labelling suspended solids in sewage effluent with 14 C‐DDT [1,1,1, trichloro‐2,2‐bis(p‐chlorophenyl)ethane] is presented. The method allows the vertical distribution of deposited solids in a soil, following leaching with effluent, to be determined. A simple physical model which describes transport of labelled suspension through the soil is developed. This enables the conditions necessary for successful utilization of the method to be defined. Procedures for the estimation of the parameters required for the model are presented and the application of the method is demonstrated for two soils. It is shown that the method for tracing the fate of suspended solids is valid, as long as the label is sufficiently strongly adsorbed on suspended solids. It is also required that the rate of desorption of label from suspended solids be low compared with the residence time of mobile suspended solids in the soil.