| 发明名称 |
PROCEDEU PENTRU EPURAREA APELOR REZIDUALE CE CONTIN LIGNOSULFONATI COMPLECSI |
| 摘要 |
<p>Purification of waste water contg. complex lignosulphonates esp. water from petroleum drilling slurries, is effected by co-pptg. the lignosulphonates, in a reaction medium at pH 1-6 (esp. 2.5-b), with a silicate, hydroxide, oxide or hydrated oxid of a divalent or trivalent mtal, so that the solid phas can b sparated from th liq. phas.</p> |
| 申请公布号 |
RO67822(A2) |
申请公布日期 |
1980.12.30 |
| 申请号 |
RO19730076482 |
申请日期 |
1973.10.31 |
| 申请人 |
SOCIETE NATIONALE ELF AQUITAINE (PRODUCTION),FR |
发明人 |
FERRAND,CLAUDE,FR;WEY,RAYMOND,FR;VAUSSARD,ALAIN,FR |
| 分类号 |
C02F1/52;(IPC1-7):C02C1/00 |
主分类号 |
C02F1/52 |
| 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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