发明名称 |
Disposal of paper pulp mill sludge |
摘要 |
A process for the disposal of paper pulp mill sludge by incorporating the sludge in the digestion step of a wood pulping operation without detrimental effects on the quality of the pulp obtained. In one aspect, the sludge is surplus sludge which is obtained from a system which microbiologically purifies spent wood pulping liquor by aeration and sedimentation.
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申请公布号 |
US4030968(A) |
申请公布日期 |
1977.06.21 |
申请号 |
US19760701611 |
申请日期 |
1976.07.01 |
申请人 |
CONSOLIDATED-BATHURST LIMITED |
发明人 |
GOEL, KRISHAN N.;WALKER, OSMAN J. |
分类号 |
C02F3/12;C02F9/00;D21C11/00;(IPC1-7):D21C3/22;C02C5/10 |
主分类号 |
C02F3/12 |
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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