发明名称 |
DISPOSITIF DE TRAITEMENT D'EFFLUENTS SALINS SURSATURES EN PRESENCE D'INHIBITEURS DE PRECIPITATION |
摘要 |
The present invention relates to a method for treating an aqueous liquid effluent containing calcium and carbonate ions and containing precipitation-inhibiting products, said process comprising the following successive steps: a) providing an aqueous liquid effluent supersaturated with CaCO3 and containing precipitation-inhibiting products; b) having the effluent obtained in step a) pass into a reactor with high solid content with a solid content maintained between 20 and 800 g/l and integrated solid-liquid separation, at a pH comprised between 8 and 9.2 allowing in a single step precipitation in situ of the aragonite polymorph of calcium carbonate and removal of the precipitation-inhibiting products; c) recovering an aqueous liquid supernatant containing a suspended solids content of less than or equal to 0.1% by mass of the solid content in the reactor, advantageously a suspended solids content of less than 50 mg/l, the precipitation-inhibiting products being phosphonates. |
申请公布号 |
FR3025792(B1) |
申请公布日期 |
2016.11.25 |
申请号 |
FR20140058779 |
申请日期 |
2014.09.17 |
申请人 |
VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT |
发明人 |
GRANGE DIDIER;COSTE M.;BARBIER E. |
分类号 |
C02F9/02;C02F1/44;C02F1/52;C02F1/66 |
主分类号 |
C02F9/02 |
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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