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公开(公告)号:US2529295A
公开(公告)日:1950-11-07
申请号:US6937949
申请日:1949-01-05
申请人: HOOD JOHN W
发明人: HOOD JOHN W
IPC分类号: C02F3/04
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公开(公告)号:US3591491A
公开(公告)日:1971-07-06
申请号:US3591491D
申请日:1968-10-04
申请人: EDMUND G SMITH , HOOD JOHN W
发明人: SMITH EDMUND G , HOOD JOHN W
CPC分类号: C02F3/1221 , B01D21/2427 , C02F1/325 , C02F3/02 , C02F2201/3221 , C02F2201/3228 , Y02W10/15 , Y10S435/813
摘要: THE METHOD OF TREATING SEWAGE OR OTHER BIODERGRADABLE WASTE MATERIALS IN A SYSTEM INCLUDING AN AEROBIC PROCESS WHEREIN A SETTLEABLE SLUDGE IS FORMED WHICH COMPRISES RETURNING A PART OR ALL OF THE SLUDGE TO A POINT IN ADVANCE OF THE INPUT OF THE AEROBIC PROCESS AND SUBJECTING A SELECTED PORTION OF THE RETURNED SLUDGE TO THE ACTION OF ULTRA VIOLET OR OTHER BACTERIOCIDAL RAYS FOR THE BIOLYSIS OF THE BACTERIA IN SAID PORTION, THE PORTION BEING SELECTED TO MEET THE FOOD REQUIREMENTS OF THE ACTIVE AEROBIC BACTERIA IN THE AEROBIC PROCESS. THE PORTION SUBJECTED TO BIOLYSIS IS SO REGULATED THAT SUBSTANTIALLY ALL OF THE BIODEGRADABLE MATTER IS CONSUMED AND ONLY A RELATIVELY SMALL QUANTITY OF SLUDGE IS REMOVED TO END DISPOSAL.
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公开(公告)号:US1669754A
公开(公告)日:1928-05-15
申请号:US23839127
申请日:1927-12-07
申请人: HOOD JOHN W
发明人: HOOD JOHN W
IPC分类号: E01B9/46
CPC分类号: E01B9/46
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公开(公告)号:US3469330A
公开(公告)日:1969-09-30
申请号:US3469330D
申请日:1967-10-27
申请人: HOOD JOHN W , ARNE W JOHNSON
发明人: HOOD JOHN W , JOHNSON ARNE W
CPC分类号: E02F3/962
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公开(公告)号:US1798673A
公开(公告)日:1931-03-31
申请号:US45713030
申请日:1930-05-29
申请人: HOOD JOHN W
发明人: HOOD JOHN W
IPC分类号: E01B9/60
CPC分类号: E01B9/60
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公开(公告)号:US2658034A
公开(公告)日:1953-11-03
申请号:US19057950
申请日:1950-10-17
申请人: HOOD JOHN W
发明人: HOOD JOHN W
CPC分类号: C02F3/34 , C02F3/04 , Y02W10/15 , Y10S435/818
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