发明名称 |
AQUEOUS FERROUS WASTE CONVERSION PROCESS |
摘要 |
<p>An aqueous ferrous sulfate waste stream is converted into sludge and improved water effluent by a preferably ambient indoor temperature and pressure flow process comprising: turbently mixing said stream with a substantial excess of gaseous oxygen and a small excess of impalpable calcium carbonate in a reaction zone until the iron content of said stream is virtually all sludged; classifying resulting sludge into a coarser solids fraction ( a portion of which is recycled to the sludging operation) and an aqueous suspension of finer solids; and separating finer solids from such aqueous suspension. As such streams usually contain free sulfuric acid, it is desirable to first precipitate from the stream a primary gypsum product by neutralization prior to such sludging operation.</p> |
申请公布号 |
CA1124894(A) |
申请公布日期 |
1982.06.01 |
申请号 |
CA19790340635 |
申请日期 |
1979.11.26 |
申请人 |
SCM CORPORATION |
发明人 |
FITCH, STEVEN J.;PEELING, PHILIP R.;HEISER, DAVID J. |
分类号 |
C02F1/64;(IPC1-7):02F1/64 |
主分类号 |
C02F1/64 |
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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