使用聚丙烯酰胺从冲洗猪粪中去除固体和营养物。

Solids and nutrient removal from flushed swine manure using polyacrylamides.

机构信息

Agriculture Technological Institute of Castilla y Leon (ITACyL), Livestock Research Area, Carretera de Burgos, Valladolid, Spain.

出版信息

J Environ Manage. 2012 Jan;93(1):67-70. doi: 10.1016/j.jenvman.2011.07.020. Epub 2011 Sep 18.

DOI:10.1016/j.jenvman.2011.07.020

PMID:22054572

Abstract

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.

摘要

液态猪粪中的大部分有机营养元素（氮和磷）和碳化合物都包含在细小的悬浮颗粒中。用聚丙烯酰胺（PAM）絮凝处理后再进行筛选是分离猪粪中固液部分的最佳方法之一，从而去除与固体相关的营养元素。在本研究中，评估了一种合成聚丙烯酰胺处理猪粪的效果。在聚合物处理后，对样品进行了筛分，对滤液进行了分析。液体部分的 TSS、VSS 和 COD 浓度分别为 2.17、1.93 和 16.42 g/L，使用 30mg/L 的 PAM 可分别去除 TSS、VSS 和 COD 的 94%、94%和 77%。