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Title: Evaluation of a simple model for predicting phosphorus removal by soils during land treatment of wastewater
Authors: Massey University. Institute of Natural Resources
Grassland Research Institute (Hurley, Berkshire, England)
Ryden, J. C.
Iskandar, I. K. (Iskandar Karam), 1938-
Syers, John K. (John Keith)
Keywords: Land treatment
Phosphorus removal
Waste water
Waste treatment
Waste disposal
Water treatment
Soil chemistry
Mathematical models
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 82-14.
Description: Special Report
Abstract: This report evaluates a simple P balance model to predict site longevity with respect to P removal during land treatment of wastewater. The model is based on measured inputs and outputs of P at the treatment site and on an estimate of the P storage capacity of the soil profile. Sorption of P by three soils used for land treatment conformed to the P sorption model based on a generalized isotherm. Laboratory sorption tests were used to predict P storage capacity of the soil profiles at a solution P concentration equivalent to that in the effluent applied to the soil. For two soil profiles the P balance model predicted site longevities of approximately 50 and 210 years. The existing depth of P enrichment in these profiles predicted from the model agreed closely with measurements of P enrichment based on amounts of NaOH-extractable P and on measured soil solution P concentrations.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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