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Freeze separation to remove nutrients from liquid swine manure.

机译：冷冻分离以除去猪粪中的养分。

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摘要

Thin-layered freezing was used in a pilot-scale field study for the treatment of liquid swine manure. It was found to be a viable mechanism for extracting a large volume of nutrients from liquid swine manure. More than 75% of the nutrients were recovered and concentrated to one-third the original volume. A significant volume of treated water was produced, which may be a valuable resource for use as recycle or irrigation water on farms. The thin-layered freezing process also removed the objectionable odour of the liquid swine manure.; The technical components of the pilot-scale field system and its operation were examined as a basis for developing a full-scale treatment system at intensive livestock operations. The capital cost for constructing a new system was {dollar}38/m 3 of manure treated compared to {dollar}25/m3 treated for retrofitting an existing dual earthen manure storage system. The annual operating costs were found to be {dollar}0.45/m3.
机译：薄层冷冻被用于中试规模的液态猪粪处理研究。发现这是从液态猪粪中提取大量养分的可行机制。回收了超过75％的养分并将其浓缩至原始体积的三分之一。产生了大量的处理过的水，这可能是宝贵的资源，可以用作农场的循环水或灌溉水。薄层冷冻过程还去除了猪粪肥液中令人讨厌的气味。对中试规模田间系统的技术组成及其运行进行了检查，以此作为在集约化畜牧业中开发全面处理系统的基础。与改建现有的双土粪肥存储系统相比，建造新系统的资本成本为38美元/立方米处理过的粪肥，而成本为25美元/立方米处理过的粪便。发现年度运营成本为{$} 0.45 / m3。

著录项

  • 作者

    Willoughby, Amanda Rose.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Engineering Agricultural.; Engineering Civil.; Engineering Environmental.
  • 学位 M.Sc.
  • 年度 2005
  • 页码 94 p.
  • 总页数 94
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 农业工程;建筑科学;环境污染及其防治;
  • 关键词

  • 入库时间 2022-08-17 11:42:17

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