发明名称 |
ACID SLUDGE ADSORPTION OF DNT WASTE WATER |
摘要 |
<p>A process for working up alkaline process wastewater from the nitration of aromatic compounds to mono-, di- and trinitroaromatics, said alkaline process wastewater having a pH of 7.5 to 13, comprising the steps of a) acidifying the alkaline process wastewater by adding concentrated sulfuric acid which originates from the workup of the aqueous, sulfuric acid-containing phase obtained in the nitration to a pH below 5, which forms a mixture A consisting of organic phase which separates out and acidic aqueous phase, b) contacting the mixture A with fresh sewage sludge, and c) removing the sewage sludge.</p> |
申请公布号 |
EP2513034(B1) |
申请公布日期 |
2014.07.30 |
申请号 |
EP20100788085 |
申请日期 |
2010.12.13 |
申请人 |
BASF SE |
发明人 |
FRITZ, RÜDIGER;HEMPEL, RENATE;ZÖLLINGER, MICHAEL;MERTEN, ANNE-KATHRIN;ZSCHIESCHANG, DORIS;HOMANN, INA;GERSDORF, ANNETT;ALLARDT, HOLGER;REETZ, REINER;FLEGEL, ELVIRA |
分类号 |
C07C201/08;C07C205/06;C07C205/12 |
主分类号 |
C07C201/08 |
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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