发明名称 |
METHOD FOR TREATING AQUEOUS LIQUID EFFLUENTS CONTAINING ORGANIC AND INORGANIC MATERIALS TO ENABLE RECYCLING THEREOF |
摘要 |
<p>A method for treating an aqueous liquid effluent containing organic and inorganic materials, particularly manure, said effluent having a dry matter content of at most 12 wt.%, in order to produce a purified aqueous liquid phase and a solid organic ameliorant and/or organic fertiliser, is disclosed. The method comprises subjecting the effluent to one or more primary liquid/solid separation steps and optionally one or more physico-chemical treatment steps to produce both a liquid medium containing no more than 3 wt.% of dry matter and having a turbidity of at most 300 NTU, and a group of concentrates containing at least 15 wt.% of dry matter in all; subjecting the resulting liquid medium to an ultra- or microfiltration step to produce an ultra- or microfiltrate containing no more than 1 wt.% of dry matter and having a turbidity of at most 100 NTU; subjecting the ultra- or microfiltrate to a reverse osmosis step to produce a concentrate and a permeate, which permeate forms the purified aqueous phase; optionally adding a particulate organic complement to the group of concentrates and mixing it therewith to produce a mixture containing 20-40 wt.% of dry matter; and carrying out aerobic fermentation of said mixture to produce an organic ameliorant and/or an organic fertiliser having a dry matter content of 40-60 wt.%.</p> |
申请公布号 |
WO9728101(A1) |
申请公布日期 |
1997.08.07 |
申请号 |
WO1997FR00166 |
申请日期 |
1997.01.28 |
申请人 |
RHONE POULENC CHIMIE;LAMY, PIERRE-YVES;COMMUNAL, JEAN-PIERRE |
发明人 |
LAMY, PIERRE-YVES;COMMUNAL, JEAN-PIERRE |
分类号 |
B01D61/04;B01D61/16;C02F1/24;C02F1/38;C02F1/44;C02F1/52;C02F1/56;C02F3/28;C02F9/00;C02F11/12;C05F3/00;C09K17/32;C09K101/00;(IPC1-7):C05F3/00 |
主分类号 |
B01D61/04 |
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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