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Solids and nutrient removal from flushed swine manure using polyacrylamides
Most of the organic nutrient elements (nitrogen and phosphorus) and carbon compounds in liquid swine are contained in fine suspended particles. Flocculation treatment with polyacrylamide (PAM) followed by screening is one the best methods to separate the liquid fraction from the solid fraction in sw...
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Published in: | Journal of environmental management 2012, Vol.93 (1), p.67-70 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Most of the organic nutrient elements (nitrogen and phosphorus) and carbon compounds in liquid swine are contained in fine suspended particles. Flocculation treatment with polyacrylamide (PAM) followed by screening is one the best methods to separate the liquid fraction from the solid fraction in swine manure, and thus to eliminate nutrient elements associated with solids.
In this study, the efficiency of a synthetic polyacrylamide to treat swine manure was evaluated. After polymer treatment samples were sieved and the filtrated liquid was analyzed. TSS, VSS and COD concentrations in the liquid fraction were 2.17, 1.93 and 16.42 g/L respectively, accounting for 94, 94 and 77% removal percentages for TSS, VSS and COD using 30 mg/L of PAM.
► The efficiency of a synthetic polyacrylamide to treat swine manure was evaluated. ► Polymer efficiency was determined by changes of manure suspended fractions. ► We concluded that 1g of TSS separated was associated with 1.72 g reduction of COD. |
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ISSN: | 0301-4797 1095-8630 |
DOI: | 10.1016/j.jenvman.2011.07.020 |