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公开(公告)号:US3361534A
公开(公告)日:1968-01-02
申请号:US44412765
申请日:1965-03-31
Applicant: UNION CARBIDE CORP
Inventor: JOHNSON JOHN E , SINGMAN THOMAS L , VAHLDIECK NATHAN P
CPC classification number: F25J3/0233 , C01B3/48 , C01B2203/0233 , C01B2203/0244 , C01B2203/0283 , C01B2203/0415 , C01B2203/046 , C01B2203/048 , C01B2203/0495 , C01B2203/0811 , C01B2203/0816 , C01B2203/0844 , C01B2203/0866 , C01B2203/0883 , C01B2203/0894 , C01B2203/1047 , C01B2203/1094 , C01B2203/1241 , C01B2203/142 , C01B2203/143 , C01B2203/147 , C01B2203/148 , C01B2203/82 , F25J3/0223 , F25J3/0252 , F25J3/0625 , F25J3/0655 , F25J2200/70 , F25J2205/04 , F25J2205/30 , F25J2235/60 , F25J2245/02 , F25J2270/12 , F25J2270/42 , F25J2270/60
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2.
公开(公告)号:US3532547A
公开(公告)日:1970-10-06
申请号:US3532547D
申请日:1965-06-10
Applicant: UNION CARBIDE CORP
Inventor: VAHLDIECK NATHAN P , MATSCH LADISLAS C
CPC classification number: H01M8/0606
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公开(公告)号:US3926794A
公开(公告)日:1975-12-16
申请号:US48425574
申请日:1974-06-28
Applicant: UNION CARBIDE CORP
Inventor: VAHLDIECK NATHAN P
CPC classification number: C02F3/1221 , C02F3/26 , Y02W10/15
Abstract: Oxygen gas is used for digestion of activated sludge in a warm covered zone and the off-gas is used as at least the major part of the aeration gas in a cooler covered zone for secondary treatment of wastewater.
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4.
公开(公告)号:US3148031A
公开(公告)日:1964-09-08
申请号:US8774461
申请日:1961-02-08
Applicant: UNION CARBIDE CORP
Inventor: VAHLDIECK NATHAN P , WANG DAVID I J
IPC: C01B3/50
CPC classification number: C01B3/505 , C01B2203/0405
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