发明名称 |
IMPROVED SEWAGE TREATMENT PROCESS |
摘要 |
A process for the treatment of sewage or other wastewater containing organic matter which comprises the steps of: (a) mixing sewage or other wastewater containing organic matter with a coagulant/adsorbent which is finely divided particulate mineral or clay material the individual particles of which have a thin hydroxylated surface layer, under conditions whereby at least a substantial proportion of the organic material in the sewage or other wastewater containing organic matter becomes attached to the coagulant/adsorbent; (b) separating the coagulant/adsorbent with attached organic material from the mixture to leave a treated liquid effluent; (c) treating the separated coagulant/adsorbent from step (b) with alkali thereby to release the organic material therefrom, separating the coagulant/adsorbent from the resultant concentrated slurry containing the organic material; and (d) adding acid to the concentrated slurry of organic material to lower the pH to less than 4 and thereby to obtain a sludge which separates under gravity and a supernatant liquid which optionally may be recycled to acidify the incoming sewage or other wastewater containing organic matter. |
申请公布号 |
WO9102698(A1) |
申请公布日期 |
1991.03.07 |
申请号 |
WO1990AU00348 |
申请日期 |
1990.08.15 |
申请人 |
COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH OR |
发明人 |
PRIESTLEY, ANTHONY, JOHN;SUDARMANA, DAVID, LOUIS |
分类号 |
C02F1/24;C02F1/28;C02F1/48;C02F1/52;C02F9/00 |
主分类号 |
C02F1/24 |
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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