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1. 发明专利

JPH0416294A BIOLOGICAL CONTACT FILTER APPARATUS 失效
公开(公告)号：JPH0416294A
公开(公告)日：1992-01-21
申请号：JP11752990
申请日：1990-05-09
申请人： MUNAKATA CHIKU SUIDOU KIGIYOUD , KURITA WATER IND LTD
发明人： GOTO YUKIO , SATO SHIN , TAKADOI TADASHI , TODOROKI KASUMA , ABE YOSHITERU
IPC分类号： C02F3/06
摘要： PURPOSE:To prevent the outflow of a filter material to a water collecting trough by providing an inclined perforated plate to the outside of the overflow wall of the water collecting trough along the overflow wall and providing a barrier plate whose inclination is reverse to that of the perforated plate from the part under the bottom of the water collecting trough to the part under the perforated plate. CONSTITUTION:A filter bed 2 packet with a filter material is provided in a filter tower 1 and bacteria are held to the filter bed 2 and raw water is passed through the filter bed 2, as an ascending current along with oxygen-containing gas, and filtered treated water is allowed to overflow to the water collecting trough 5 having an overflow wall 6 provided to the upper part in the tower 1. An inclined perforated plate 7, slopping down toward the overflow wall 6 and reaching the part under the bottom of the water collecting trough 5 at the lower end part thereof, is provided outside the overflow wall 6 of the water collecting trough 5 along the overflow wall 6. Further, a barrier plate 7 whose inclination is reverse to that of the perforated plate 7 is provided, from the part under the bottom of the water collecting trough 5 to the part under the perforated plate 7 so as to hold an interval from the lower end of the perforated plate 7. As a result, it can be effectively prevented that the filter material constituting the filter bed flows out to the water collecting trough during operation, and economical efficiency and workability are enhanced.

2. 发明专利

JPH04197491A OZONE TREATMENT METHOD AND APPARATUS 失效
公开(公告)号：JPH04197491A
公开(公告)日：1992-07-17
申请号：JP32742990
申请日：1990-11-28
申请人： KURITA WATER IND LTD , MUNAKATA CHIKU SUIDOU KIGIYOUD
发明人： SATO SHIN , GOTO YUKIO , TAKADOI TADASHI , TODOROKI KAZUMA , ABE YOSHITERU
IPC分类号： C02F1/50 , C02F1/78
摘要： PURPOSE:To rapidly control the proper injection amount of ozone even when the quality of a solution to be treated is changed by calculating the pseudo- primary reaction speed constant K1 of the solution to be treated and controlling the injection amount of ozone on the basis of the calibration curve formed at every constant K1. CONSTITUTION:In an ozone reaction tower 1 where ozone-containing gas is brought into contact with a solution to be treated, the solution to be treated is supplied to a liquid supply passage 2 and discharged from a drain passage 3. Ozone-containing gas is supplied to the reaction tower 1 from an ozone generator 4 by an ozone injection pipe 5 and exhaust gas is discharged from the reaction tower 1 from an exhaust passage 6. Further, the concn. of ozone dissolved in the treated solution or the concn. of ozone in the exhaust gas is measured by ozone densitometers 9, 10, 13. Furthermore, a pseudo-primary reaction speed constant K is operated from the measured value by an operation apparatus 14. A control apparatus 17 controls the injection amount of ozone on the basis of the calibration curve showing the relation between the injection amount of ozone and the concn. of dissolved ozone or the concn. of exhaust ozone prepared at every constant K1.

3. 发明专利

JPH04180888A OZONE CONTACT APPARATUS 失效
公开(公告)号：JPH04180888A
公开(公告)日：1992-06-29
申请号：JP30629290
申请日：1990-11-14
申请人： KURITA WATER IND LTD , MUNAKATA CHIKU SUIDOU KIGIYOUD
发明人： SATO SHIN , GOTO YUKIO , TAKADOI TADASHI , TODOROKI KAZUMA , ABE YOSHITERU
IPC分类号： C02F1/50 , C02F1/78
摘要： PURPOSE:To enhance the ozone absorbing efficiency of water to be treated by providing a packed bed under the water sprinkling device in a contact tank receiving ozone gas from the lower part thereof so as to position the same above the surface of the water. CONSTITUTION:A packed bed 11 is provided under a distributor 2 so as to be positioned above the surface of the water in a contact tank 1. The packed bed 11 is constituted of the packing material placed on a porous support plate 12. The water to be treated sprinkled from the distributor 2 flows down through the packed bed 11 to come into contact with the ozone gas rising through the packed bed 11 to absorb the ozone gas, and subsequently flows downward under the surface of the water to further come into contact with the ozone gas countercurrently to further absorb the ozone gas. The treated water having ozone absorbed therein enters a reaction tank 8 from a communication port 9 and flows upward to be discharged from an overflow port 10. Further, the water in the contact tank 1 is partitioned into many small sections by an accumulated body of grid bodies or honeycomb cylinders opened in up-and-down directions and, by arranging air diffusing spheres 3 to the lower parts of the centers of the respective small sections, water to be treated flowing downward is converted to plug streams and ozone absorbing efficiency can further be enhanced.

4. 发明专利

JPH0416290A OZONE CONTACT APPARATUS 失效
公开(公告)号：JPH0416290A
公开(公告)日：1992-01-21
申请号：JP11752890
申请日：1990-05-09
申请人： MUNAKATA CHIKU SUIDOU KIGIYOUD , KURITA WATER IND LTD
发明人： SATO SHIN , GOTO YUKIO , TAKADOI TADASHI , TODOROKI KASUMA , ABE YOSHITERU
IPC分类号： C02F1/50 , B01F3/04 , C02F1/78
摘要： PURPOSE:To enhance the ozone absorbing efficiency of water to be treated by dividing the interior of a contact tank into a plurality of small sections opened up and down each having a specific size by partition walls and arranging air diffusing devices discharging ozone to the lower part in the tank directly under the centers of the respective small sections. CONSTITUTION:The interior of a contact tank 1 is divided into two or more small sections 4 opened up and down each having a cross-sectional area of 0.01-0.5m and a cross section aspect ratio of 1-2 by partition walls 3 and water to be treated is allowed to flow downwadly through the small sections 4 of the tank 1 as plug streams, Air diffusing spheres 5 are arranged directly under the centers of the respective small sections 4 to discharge ozone gas. Therefore, the ozone gas uniformly comes into contact with the water to be treated flowing down through the small sections as plug streams. By this method, the ozone absorbing efficiency of the water to be treated is enhanced.

5. 发明专利

JPH03123693A BIOLOGICAL CONTACT FILTERING METHOD 失效
公开(公告)号：JPH03123693A
公开(公告)日：1991-05-27
申请号：JP25892889
申请日：1989-10-05
申请人： MUNAKATA CHIKU SUIDO KIGIYOUDA , KURITA WATER IND LTD
发明人： SATO SHIN , GOTO YUKIO , TAKADOI TADASHI , TODOROKI KASUMA , ABE YOSHITERU
IPC分类号： C02F3/06
摘要： PURPOSE:To enhance the removal capacity of ammonia nitrogen in the treatment of raw water varied in load by passing raw water through a filter tower packed with a filter bed holding bacteria while alternately changing over the same to upward flow and downward flow at every 1-10 days. CONSTITUTION:Raw water is brought into contact with nitrifying bacteria held to a filter bed 2 while filtered by the filter bed 2 and ammonia nitrogen in raw water is oxidized to be removed. Raw water is passed through the filter bed 2 while alternately changed over to downward flow and upward flow at every 1-10 days. By alternately performing the downward flow passage and upward flow passage of water at this frequency, nitrifying bacteria oxidizing ammonia nitrogen can be allowed to live not only in the upper part of the filter bed 2 but also in the lower part thereof in much quantity and the quantity of nitrifying bacteria held by the whole of the filter bed becomes very much. By this method, the lowering of the removal capacity of ammonia nitrogen can be suppressed low with respect to load variation such that the concn. of ammonia nitrogen in raw water suddenly increased.

6. 发明专利

JPH03123687A BIOLOGICAL CONTACT FILTER APPARATUS 失效
公开(公告)号：JPH03123687A
公开(公告)日：1991-05-27
申请号：JP25892789
申请日：1989-10-05
申请人： MUNAKATA CHIKU SUIDO KIGIYOUDA , KURITA WATER IND LTD
发明人： GOTO YUKIO , SATO SHIN , TAKADOI TADASHI , TODOROKI KASUMA , ABE YOSHITERU
IPC分类号： C02F3/06 , B01J19/30 , C02F1/28 , C02F3/10
摘要： PURPOSE:To perform treatment from a stage of an acclimation period even when the moldy smell decompositing bacterial bonded to an activated carbon filter material are not yet acclimatized by packing a filter tower with columnar granular activated carbon having a specific diameter as a filter bed. CONSTITUTION:In a biological contact filter apparatus wherein bacteria are held to the filtered in a filter tower formed by packing the filter tower with a filter material 3 and raw water is passed through the filter bed. The filter tower is packed with columnar granular activated carbon having a diameter (d) of 2.0-4.0mm as a filter bed. Herein, the granular shape of activated carbon is not a rod shape low in strength but means a shape whose length L to the diameter (d) is about 0.5-2.0. The filter bed constituted of the filter material 3 is low in the trapping ratio of suspended matter and a moldy smell is adsorbed by the properties of the activated carbon itself of the filter material during about two months at the beginning of operation until moldy smell decomposing bacteria are acclimatized.

7. 发明专利

JPH0649190B2 失效
公开(公告)号：JPH0649190B2
公开(公告)日：1994-06-29
申请号：JP17697586
申请日：1986-07-28
申请人： KURITA WATER IND LTD
发明人： INAGAKI KYOHIKO , GOTO YUKIO
IPC分类号： C02F1/28 , B01D61/58 , C02F1/44 , C02F9/00

8. 发明专利

JPH03123607A DEVICE FOR FEEDING FLOCCULANT 失效
公开(公告)号：JPH03123607A
公开(公告)日：1991-05-27
申请号：JP25892689
申请日：1989-10-05
申请人： MUNAKATA CHIKU SUIDO KIGIYOUDA , KURITA WATER IND LTD
发明人： GOTO YUKIO , SATO SHIN , TAKADOI TADASHI , TODOROKI KASUMA , ABE YOSHITERU
IPC分类号： B01D21/30
摘要： PURPOSE:To effect coagulating sedimentation efficiently by computing flocculant feed rates depending on the result of detection of an absorbance detecting means based on a relation between predetermined absorbance and flocculant feed rates to compute flocculant feed quantities from said flocculant feed rates and values of a raw water flowmeter. CONSTITUTION:A raw water flowmeter 7, an absorbance detecting means 8 to detect absorbance at a wave length of 260 nm of raw water and flocculant feed means 3, 4 to feed flocculant to raw water are provided. And in an operation controller 10, flocculant feed rates are computed depending on the result of detection of the absorbance detecting means 8 based on a relation between predetermined absorbance and flocculant feed rates to compute feed rates of flocculant, while feed quantities of flocculant which are fed by means of flocculant feed means 3, 4 are controlled. As a result, coagulating sedimentation is performed, following sufficiently the fluctuations of trihalomethane precursor in the raw water.

9. 发明专利

JPH01127004A EXTERNAL PRESSURE FILTER TYPE HOLLOW YARN MEMBRANE MODULE 失效
公开(公告)号：JPH01127004A
公开(公告)日：1989-05-19
申请号：JP28519487
申请日：1987-11-13
申请人： SUMITOMO BAKELITE CO , KURITA WATER IND LTD
发明人： MIURA TAKASHI , GOTO YUKIO
IPC分类号： B01D63/02
摘要： PURPOSE:To make contamination of a filtrate side extremely little and to enable exchanging of a membrane element by integrally bonding and fixing both a hollow yarn membrane part and a cap body forming a flow path of filtrate into one body. CONSTITUTION:Hollow yarn membranes 7 are bundled nearly straightly and both ends are fixed, and the end faces of the membranes 7 in a fixing part 4 side are opened and the end faces of the membranes 7 in a fixing part 5 side sealed. A cap body 3 having a filtrate outlet 9 and a flange 10 is liquid- tightly bonded to the fixing part 4 and both fixing parts 4, 5 are fixed to both end parts of a perforated rigid cylindrical body 6 and thereby a membrane element 1 is formed. A hollow yarn membrane module is manufactured by fitting the membrane element to a housing 2 having a flange 11 supporting the cap body 3, a water supply inlet 8 and a water supply outlet 13 and fixing the flanges 10, 11 via a sealing member 12 and integrating them into one body. By such a way, contamination of the contact face of filtrate at a time for manufacturing the module can be prevented and the membrane module can be easily exchanged.

10. 发明专利

JPS62210095A ION EXCHANGE DEVICE 失效
公开(公告)号：JPS62210095A
公开(公告)日：1987-09-16
申请号：JP5343986
申请日：1986-03-11
申请人： KURITA WATER IND LTD
发明人： INAGAKI KIYOHIKO , GOTO YUKIO
IPC分类号： B01J47/04 , B01J47/02 , C02F1/42
摘要： PURPOSE:To permit efficient drawing of water according to the constitution ratio of cations and anions of raw water by using an ion exchange device of a 2-bed 1-column type using an anion exchange resin and mixed bed type ion exchange resin. CONSTITUTION:The inside of an ion exchange column 20 is segmented to two chambers by a partition wall 23 with a strainer 31. A raw water supplying port 21 is provided to one chamber 24 and a treated water discharge port 22 is provided to the other chamber 25. The anion exchange resin A is packed into the one chamber 24. The cation exchange resin and anion exchange resin are packed into the other chamber 25 as the mixed bed type. More specifically, the total resin amt. can be determined as desired in conformity with the load constitution ratio of the cations and anions of the raw water and therefore, the efficient drawing of the water is made possible; in addition, the constant water quality operation by controlling the specific resistance of the treated water is executed. Since the device is constituted as the 1-column 2-bed type, the size of the device is reduced and the floor area and initial cost are reduced.

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