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21. 发明专利

JPS56125206A CONTROLLING METHOD OF OXYGEN FLOW RATE IN UTILIZING APPARATUS OF OXYGEN AND CONTROLLING APPARATUS 失效
公开(公告)号：JPS56125206A
公开(公告)日：1981-10-01
申请号：JP2795680
申请日：1980-03-07
申请人： HITACHI LTD
发明人： TOMOMURA MASAOMI , YOKOYAMA HIROSHI , YAHAGI TOSHIO , NOKITA SHIYUNSUKE , OTAHARA YOUJI
IPC分类号： C01B13/02 , B01D53/04 , C10L1/32 , C12M1/04
摘要： PURPOSE:To supply a proper amount of O2 at all time to a utilizing apparatus of oxygen, by detecting the oxygen flow rate supplied to the utilizing apparatus of oxygen and the oxygen concentration expelled from the apparatus, and adjusting the supplying pressure of the mixed gas of N2 and O2 based on the detected values. CONSTITUTION:A mixed gas consisting of N2 and O2 essentially is supplied from a supply pressure pump 4, a water drop separator 5 to an adsorbing column 1 or 2 containing an absorbent for N2, and the resultant gas containing concentrated O2 is stored in an oxygen tank 12. The concentrated oxygen in the tank 12 is supplied from an electromagnetic flowmeter 14 for the oxygen flow rate supplied and a supply port 15 to a utilizing apparatus 16, e.g. a cultivating tank, and expelled from a vent hole 17. The oxygen flow rate detected by the flowmeter 14 and the oxygen concentration detected by a sensor 19 provided at the vent hole 17 are sent to a controller 24, and control signals of the supply pressure of the mixed gas corresponding to the supply oxygen flow rate under the given necessary oxygen concentration based on the detected values are output to the pump 4 to control the supply pressure of the mixed gas.

22. 发明专利

JPS56109596A MEASUREMENT OF CELL CONCENTRATION 失效
公开(公告)号：JPS56109596A
公开(公告)日：1981-08-31
申请号：JP1005380
申请日：1980-02-01
申请人： HITACHI LTD
发明人： SHIMIZU NORIO , YAMAGUCHI TETSUO , SAITOU SETSUO , UENO MASAO , OTAHARA YOUJI
IPC分类号： C12Q1/06
摘要： PURPOSE:In the cultivation of a microorganism, the amount of nitrogen consumed by the microorganism is determined and the result and the nitrogen content of the cells that has been previously determined are used to calculate the amount of the cells in the culture medium, whereby the accurate measurement of the cell concentration is given promptly even when the cells are cultured in high concentration. CONSTITUTION:Even when the microorganism cells cultured in tank 1 reach a high concentration level, analyzer 11 determines the nitrogen content on the supernatant collected from sample tube 3 and arithmetic unit 12 calculates the amount of the cells in the tank on the basis of the data on the nitrogen content. Corresponding to the signals from the arithmetic units 12 and 14, controller 13 controls the rotation of pump 7 to keep the addition of the substrate from substrate tank 9 to the cultivation tank 1 to an appropriate level. Thus, effective cultivation of high-concentration cells can be done. Low-concentration cultivation also is effected in the same way.

23. 发明专利

JPS5547187A WASTE WATER TREATMENT EQUIPMENT 失效
公开(公告)号：JPS5547187A
公开(公告)日：1980-04-03
申请号：JP12078279
申请日：1979-09-21
申请人： HITACHI LTD
发明人： SHIMIZU NORIO , KOIKE SEIJI , NAKAOKA AZUMA , OTAHARA YOUJI
IPC分类号： C02F3/12 , C02F3/20
摘要： PURPOSE:To provide a better settling in a sedimentation basin, a vertical aeration tank contains air diffusion plates consisting of perforated plate, and a deaerator that removes air from the liquid in the tank. CONSTITUTION:Waste water enters a vertical aeration tank 11 through inlet pump 6, mixed with active sludge and exposed to particled air supplied through a blower 7, air diffusion nozzles 12 and a perforated plate 13. The waste water is oxidized and decomposed by active sludge, and overflows the top of the aeration tank 11. Then, the water flows from the receiver 33, enters the inlet 22 of a deaerator 21, and deaired by collinding with liquid contained in the internal receiver 24. Then, the water goes out through the outlet 23 and enters a sedimentation basin 3 where solid and liquid are separated. The treated water is discharged from the top of the sedimentation basin 3.

24. 发明专利

JPS5534175A AEROBIC DIGESTION METHOD OF SLUDGE 失效
公开(公告)号：JPS5534175A
公开(公告)日：1980-03-10
申请号：JP10765578
申请日：1978-09-04
申请人： HITACHI LTD
发明人： YAMAGUCHI TETSUO , SAITOU SETSUO , SHIMIZU NORIO , OTAHARA YOUJI
IPC分类号： C02F11/02 , C02F11/18
摘要： PURPOSE:To accelerate the rate of decomposition of microbe cells and perform aerobic digestion efficiently by heat-treating the biodecomposable sludge then subjecting the same to aerobic digestion treatment. CONSTITUTION:Before the excess sludge from microbe treatment of organic waste water or the biodecomposable live sludge from precipitation treatment of waste water is introduced into a digesting tank, it is heat treated at 60-100 deg.C. Then, the flocks of the sludge are broken down by this heating, making the cells of the microbes constituting the blocks easier to decompose Thereafter, this sludge is directed to the digesting tank, where it is subjected to aerobic digestion treatment. Here, here is a tendency to an increase in the COD concentration in the digesting liquid and therefore fresh foul sludge which has not undergone heat treatment is adeed after heat treatment or after heating then aerobic digestion treatment, whereby aeration treatment is again accomplished.

25. 发明专利

JPS54131573A GAS STIRRING TYPE SOLIDDLIQUID CONTACTOR 失效
公开(公告)号：JPS54131573A
公开(公告)日：1979-10-12
申请号：JP3878978
申请日：1978-04-04
申请人： HITACHI LTD
发明人： ISHIBASHI HITOSHI , NISHIMURA YUUSAKU , OTAHARA YOUJI , KUBOTA SHIYOUJI
IPC分类号： C02F3/08 , B01F13/02 , B01J8/20 , B01J8/22 , C12M1/08
摘要： PURPOSE:A gas-stirring type solid-liquid contactor capable of fluidizing great amounts of solid particles and also of performing good liquid-liquid contact, having plural openings pervious to solid particles in the side walls of draft tube provided in its tank. CONSTITUTION:The draft tube 2 is provided in the gas stirring tank 1, and the draft tube 2 is provided with the plural openings 5 pervious to solid particles 4. The plural openings 5 are provided similarly in the lower 1/3 zonal side wall of the draft tube 2, in the central 1/3 zonal side wall of the draft tube 2, in the lower half zonal side wall of the draft tube 2, or in the whole zonal side wall of the draft tube 2, according to need. Or, if necessary, notches may be formed at an invterval and alternately right and left in the draft tube or plural small draft tubes are stacked vertically in such a way that their central axles conicide with each other with width large enough to make solid particles pass.

26. 发明专利

JPS5385947A METHOD OF TREATING WASTE LIQUID CONTAINING NITROGEN COMPOUNDS 失效
公开(公告)号：JPS5385947A
公开(公告)日：1978-07-28
申请号：JP12077
申请日：1977-01-05
申请人： HITACHI LTD
发明人： NISHIMURA YUUSAKU , ISHIBASHI HITOSHI , ISHIDA MASAHIKO , KUBOTA SHIYOUJI , OTAHARA YOUJI
IPC分类号： C02F3/34
摘要： PURPOSE:To permit the reactions of nitrification and denitrification in the biological treatment of the waste liquid to be brought about efficiently by combining an absorption treatment with zeolite and a biological treatment and also permit the organic carbon source required by denitrifying bacteria in thedenitrification process to be self-sustained within the treatment system.

27. 发明专利

JPS5349855A METHOD OF ANAEROBIC DIGESTION OF ORGANIC WASTE MATTER 失效
公开(公告)号：JPS5349855A
公开(公告)日：1978-05-06
申请号：JP12383376
申请日：1976-10-18
申请人： HITACHI LTD
发明人： ISHIDA MASAHIKO , HAGA RIYOUICHI , OTAHARA YOUJI
IPC分类号： C02F3/28 , B09B3/00 , C02F11/04 , C05F17/00 , C12N1/20
摘要： PURPOSE:To remove offensive odor of waste liquid containing organic waste matter without giving rise to pollution problems by adding alkali to and then heating the liquid for bringing about hydrolysis and further subjecting the liquid to anaerobic digestion.

28. 发明专利

JPS52103854A PROCESS FOR TREATING ACTIVATED SLUDGE 失效
公开(公告)号：JPS52103854A
公开(公告)日：1977-08-31
申请号：JP1888276
申请日：1976-02-25
申请人： HITACHI LTD
发明人： SHIMIZU NORIO , OTAHARA YOUJI
IPC分类号： C02F3/12
摘要： PURPOSE:To provide a process for separating solid from liquid efficiently so as to prevent sludge from floating, by making a sedimentation tank into a pressurized sedimentation tank of closed type in activated sludge process.

29. 发明专利

JPS5279556A METHOD OF TREATING AEROPHOBICALLY DIGESTED LIQUID 失效
公开(公告)号：JPS5279556A
公开(公告)日：1977-07-04
申请号：JP15624875
申请日：1975-12-25
申请人： HITACHI LTD
发明人： ISHIDA MASAHIKO , HAGA RIYOUICHI , OTAHARA YOUJI
IPC分类号： C02F9/00 , C02F1/58 , C02F3/12 , C02F3/28 , C02F3/30
摘要： PURPOSE:To effectively remove BOD nitrogen and phosphorus from the organic waste liquid that has been aerophobically digested.

30. 发明专利

JPS5233359A AERATION METHOD OF ORGANIC WASTE WATER AND THE DEVICE 失效
公开(公告)号：JPS5233359A
公开(公告)日：1977-03-14
申请号：JP10888975
申请日：1975-09-10
申请人： HITACHI LTD
发明人： SHIMIZU NORIO , OTAHARA YOUJI , YAMAGUCHI TETSUO , SAITOU SETSUO , NAKAOKA AZUMA , ICHIHASHI KAZUAKI
IPC分类号： C02F3/20 , C02F3/22 , C02F3/26 , C02F3/34
摘要： PURPOSE:To provide an aeration process and the device of organic waste water by using a deep layer aeration tank capable of the complete mixing of the water and the air utilizing oxygen at high rate and heavy duty disposition.

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