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Removal of ammonia from wastewater
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Patent number 4,695,387
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Issue date Sep 22, 1987
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Advanced Separation Technologies Incorporated
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W. Wes Berry
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Advanced separation device and method
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Patent number 4,522,726
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Issue date Jun 11, 1985
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Progress Equities Incorporated
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W. Wess Berry
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE