发明名称 |
Treatment of waste liquid and apparatus therefor and a fertilizer composition obtained thereby |
摘要 |
A process for treating a waste liquid which is obtained from a fermentation process, e.g., an alcohol fermentation, and contains organic and inorganic substances which are useful as fertilizer, is provided which includes combusting a concentrate of the waste liquid and bringing the combustion products containing the ashes which are formed from the inorganic substances and the hot combustion gases into direct contact with a fresh portion of the waste liquid. Thereby the liquid is concentrated by evaporation and a slurry of the ashes in the concentrated waste liquid is formed. The slurry is separated into a solid sediment containing the minerals and a part of the organic components of the liquid and a concentrates mother liquid, at least a portion of which is combusted as the concentrate. By drying the sediment with agitation, a granulate which can be used as a fertilizer can be produced.
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申请公布号 |
US4119538(A) |
申请公布日期 |
1978.10.10 |
申请号 |
US19760750375 |
申请日期 |
1976.12.14 |
申请人 |
NITTETU CHEMICAL ENGINEERING LTD. |
发明人 |
YAMAUCHI, TADASHI;AKUNE, MIKIO;KOUCHI, SUSUMO |
分类号 |
C02F1/02;C02F1/04;C02F9/00;C02F11/06;C05F5/00;F23G7/00;F23G7/04;(IPC1-7):C02C5/06 |
主分类号 |
C02F1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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