Concentrations of Phosphorous, Magnesium and Calcium in Swine Wastewater and Possibility of Removing These Components through Crystallization

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In order to confirm the possibility of crystallization of P, Mg and Ca in swine wastewater, the concentration of P, Mg and Ca in such wastewater was determined by estimation and measurement of real swine wastewater, and artificial induction of a crystallizing reaction was attempted in swine wastewater. Based on estimates of the material flow of P, Mg and Ca in the average swine husbandry system in Japan, the concentrations of P, Mg and Ca in swine wastewater were calculated as 11.3mmol/l, 6.2mmol/l and 10.2mmol/l, respectively, when 100% of feces excreted was mixed into urine and washing water. It was shown that real swine wastewater also includes P, Mg and Ca in high concentrations, and that a considerable portion of PO43-, Mg and Ca naturally exist as crystal in swine wastewater of relatively high pH (7.7-8.7). It was confirmed that artificial crystallization of soluble PO43-, Mg and Ca can be done by adding NaOH to swine wastewater. Moreover, it was clarified that crystal in swine wastewater does not redissolve if a high pH condition is maintained. Crystal can be removed easily by sedimentation because of its high density. An artificial crystallizing process will contribute to a scale-free purification system for swine wastewater.

収録刊行物

  • 日本畜産學會報 = The Japanese journal of zootechnical science

    日本畜産學會報 = The Japanese journal of zootechnical science 72(1), 72-79, 2001-01-01

    Japanese Society of Animal Science

参考文献:  16件中 1-16件 を表示

被引用文献:  4件中 1-4件 を表示

各種コード

  • NII論文ID(NAID)
    10008020658
  • NII書誌ID(NCID)
    AN00195188
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13443941
  • NDL 記事登録ID
    5646912
  • NDL 雑誌分類
    ZR22(科学技術--農林水産--畜産)
  • NDL 請求記号
    Z18-348
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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