发明名称 |
Pre-treatment reverse osmosis water recovery method for brine retentate metals removal |
摘要 |
A pre-treatment method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into waters with suspended solids in a liquid fraction to be filtered to form sulfurous acid (H2SO3) to acid leach heavy metals into the liquid fraction, reduce alkalinity and mineral scaling, add sufficient SO2 as a biocide to attack bacteria and other micro organisms to prevent membrane fouling, reduce iron to prevent iron deposit build-up, scavenge and remove dissolved oxygen prior to filtration to prevent membrane oxidation, and then sequentially filtering the acidified water through membrane filters to create a metal free permeate and a brine retentate, which can be pH adjusted to remove the heavy metals as metal hydroxide precipitates. |
申请公布号 |
US8101083(B2) |
申请公布日期 |
2012.01.24 |
申请号 |
US20100798087 |
申请日期 |
2010.03.30 |
申请人 |
RUEHR THOMAS A.;RUEHR, LEGAL REPRESENTATIVE EVELYN;GONG TERRY R.;THEODORE MARCUS G.;EARTH RENAISSANCE TECHNOLOGIES, LLC |
发明人 |
RUEHR THOMAS A.;RUEHR, LEGAL REPRESENTATIVE EVELYN;GONG TERRY R.;THEODORE MARCUS G. |
分类号 |
C02F1/44;B01D61/04;B01D65/08 |
主分类号 |
C02F1/44 |
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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