发明名称 |
FOERFARANDE FOER BEHANDLING AV PROCESSVATTEN |
摘要 |
Methods of treating process water containing metal ions is disclosed including contacting the process water with a pulp comprising lignocellulose-containing material at a pH of above about 7 and a temperature of from about 50 DEG to 120 DEG C. whereby at least a portion of the metal ions are removed from the process water. Preferably the process water is produced from initially washing a pulp solution prior to a bleaching step employing hydrogen peroxide or ozone. |
申请公布号 |
SE9301160(D0) |
申请公布日期 |
1993.04.07 |
申请号 |
SE19930001160 |
申请日期 |
1993.04.07 |
申请人 |
SUNDS DEFIBRATOR INDUSTRIES AB |
发明人 |
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分类号 |
C02F9/00;D21C9/00;D21C9/10;D21C9/153;D21C9/16;D21C11/00 |
主分类号 |
C02F9/00 |
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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