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Removal of nitrogen from wastewaters
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Patent number 5,641,413
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Issue date Jun 24, 1997
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Zimpro Environmental, Inc.
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Joseph A. Momont
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Caustic sulfide wet oxidation process
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Patent number 5,082,571
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Issue date Jan 21, 1992
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Zimpro Passavant Environmental Systems Inc.
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David A. Beula
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE