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71. 发明专利

JPS61242689A DEPHOSPHORIZING METHOD 失效
公开(公告)号：JPS61242689A
公开(公告)日：1986-10-28
申请号：JP8329885
申请日：1985-04-18
申请人： KURITA WATER IND LTD
发明人： OHASHI NORIO , ETO YOSHIHIRO , SAWADA SHIGEKI
IPC分类号： C02F1/28 , C02F1/58
摘要： PURPOSE:To prevent the leakage of phosphoric ions from an Al-contg. granular material by passing water contg. phosphoric ions through a layer packed with the granular material at specified pH in the presence of an Al salt, reactivating the deactivated granular material and allowing the Al salt to be present. CONSTITUTION:Water contg. phosphoric ions is passed at 3-8pH in the presence of an Al salt (e.g., Al chloride) through a layer packed with an Al-contg. granular material (e.g., granular activated alumina), the deactivated granular material is brought into contact with an alkaline agent and reactivated and water contg. phosphoric ions is passed through the layer packed with the granular material at 3-8.5pH. At this time, a requisite amt. of an Al salt (the salt as Al >=2 times the phosphoric ions as P by pts.wt.) is allowed to be present to prevent the leakage of phosphoric ions from the reactivated granular material. Consequently, phosphoric ion-contg. water can be stably treated and the leakage of phosphoric ions from the granular material after reactivation can be finished in a short time.

72. 发明专利

JPS61157393A DEPHOSPHORIZATION APPARATUS 失效
公开(公告)号：JPS61157393A
公开(公告)日：1986-07-17
申请号：JP27869284
申请日：1984-12-28
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI , JOKO ISAO , GOTO CHUICHI
IPC分类号： C02F1/58 , B01D9/02
摘要： PURPOSE:To efficiently perform reactivation treatment, by mounting an upward flow type solid-liquid contact apparatus having a contact bed having a seed crystal contained therein, a stirring blade type release tank and a return means. CONSTITUTION:A supply pipe 6 for supplying a seed crystal to the contact bed of the uppermost stage from a reactivation part 10 is provided to a treatment tower 1. A raw water supply pipe 7 is provided to the treatment tower 1 so as to be positioned below a lowermost stage support plate 2 and a seed crystal withdrawal pipe 8 is connected to the bottom of the tower 1 while the flow pipe 9 for flowing raw water is connected to reactivation part 10 in a T-shape. Opening and closing valves V1, V2 are provided on the way of withdrawal pipe 8 and to the upstream side of the crossing point of the flow pipe 9 and the withdrawal pipe 8. The crystal seed is continuously or intermittently replenished to the uppermost stage contact bed 3 by the supply pipe 6 and the liquid to be treated is flowed upwardly through the tower 1 while an alkali agent and a chlorine agent are added to the water supply pipe 7 from chemical injection devices 23, 24, 25.

73. 发明专利

JPS60221485A SOIL CONDITIONER 失效
公开(公告)号：JPS60221485A
公开(公告)日：1985-11-06
申请号：JP7744484
申请日：1984-04-17
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI , JIYOUKOU ISAO
IPC分类号： C09K17/00 , C05B7/00 , C05B17/00 , C05G3/80 , C09K17/02 , C09K17/06 , C09K17/08 , C09K101/00
摘要： PURPOSE:To recover and utilize effectively phosphorus resources and obtain an economically advantageous soil conditioner, by bringing water containing a phosphate into contact with zeolite at a specific pH in the presence of calcium ions to form a fluidized bed. CONSTITUTION:A soil conditioner, obtained by bringing water containing a phosphate, usually 0.1-10mg/l phosphorus concentration into contact with zeolite, preferably having 10-300 mesh particle size in the presence of calcium ions in the state of a fluidized bed. The expansion coefficient of the fluidized bed is preferably 40-80%, and the pH of the reaction system is desirably 6-12. An alkali agent is added to source water as necessary.

74. 发明专利

JPS60202790A DEPHOSPHORIZATION PROCESS 失效
公开(公告)号：JPS60202790A
公开(公告)日：1985-10-14
申请号：JP5576084
申请日：1984-03-22
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI , JIYOUKOU ISAO , GOTOU CHIYUUICHI
IPC分类号： C02F1/58
摘要： PURPOSE:To separate stripped products efficiently from liquid suspension without injection a chemical by allowing crystal seed to contact with water contg. phosphate again and supplying the aq. suspension contg. the stripped product to a porous tube filter to concentrate and separate the stripped product. CONSTITUTION:Water contg. phosphate is allowed to contact with crystal seeds contg. calcium phosphate compd. at >=6pH in the presence of Ca ion to perform dephosphorization. In this case, the surface layer of deposited crystal seeds is stripped and reactivated so as to expose a crystalline apatite layer deposited on the surface of the crystal seeds and the crystal seeds are allowed to contact again with water contg. phosphate. On one hand, the aq. suspension contg. the stripped product is fed to a porous tube filter to concentrate and separate the stripped product. It is preferable that the surface layer is >=50% of the deposited part when the surface layer of the deposited product of the crystal seeds is stripped off.

75. 发明专利

JPS6087892A DEPHOSPHORIZING METHOD 失效
公开(公告)号：JPS6087892A
公开(公告)日：1985-05-17
申请号：JP19688683
申请日：1983-10-20
申请人： KURITA WATER IND LTD
发明人： OOHASHI NORIO , JIYOUKOU ISAO , SAWADA SHIGEKI , GOTOU CHIYUUICHI
IPC分类号： C02F1/58
摘要： PURPOSE:To remove efficiently phosphate ions with high efficiency by allowing the water contg. phosphate ions to pass through a layer packed with granules contg. aluminum in the presence of aluminum compds. while regulating the pH to 3-8.5. CONSTITUTION:The aluminum compd. such as aluminum chloride, aluminum sulfate, and aluminum polychloride is added to the water contg. phosphate ions such as sewage, night soil, and industrial waste water, and the pH is regulated to 3-8.5, or preferably to 5-7. Then the water is passed through a layer packed with granules contg. aluminum such as activated alumina, alumina and silica, and aluminum phosphate, and the reaction product of phosphate ions with aluminum ions is collected. The aluminum compd. is incorporated into said phosphate-contg. water in 1:(0.5-1.5) equivalent ratio of phosphate ions to aluminum ions.

76. 发明专利

JPS6061091A TREATMENT OF WATER CONTAINING PHOSPHATE 失效
公开(公告)号：JPS6061091A
公开(公告)日：1985-04-08
申请号：JP16754983
申请日：1983-09-13
申请人： KURITA WATER IND LTD
发明人： JIYOUKOU ISAO , SAWADA SHIGEKI , GOTOU CHIYUUICHI
IPC分类号： C02F1/58
摘要： PURPOSE:To remove phosphates from water contg. the phosphates with high efficiency by bringing the water contg. phosphates into contact with crystal seeds at >=6pH to remove the phosphates, and reactivating the seeds contg. calcium phosphate with heating. CONSTITUTION:The water contg. phosphates is brought into contact with crystal seeds contg. calcium phosphate such as phosphate rock, bone charcoal, and a granular material having calcium phosphate crystals on the surface at >=6pH in the presence of calcium ions to remove the phosphates. The crystal seeds used for the removal of phasphates are reactivated at 100-650 deg.C, or preferably at 300-600 deg.C. Although the stability can be improved with longer heating time for reactivation, the time is not nesessarily restricted. The heating for 0.5-24hr is enough for obtaining a sufficient reactivation effect. The heating means is also not specifically limited, and a kiln, an electric furnace, etc. can be used.

77. 发明专利

JPS6022989A DEPHOSPHORIZATION PROCESS 失效
公开(公告)号：JPS6022989A
公开(公告)日：1985-02-05
申请号：JP13041483
申请日：1983-07-15
申请人： KURITA WATER IND LTD
发明人： JIYOUKOU ISAO , SAWADA SHIGEKI , GOTOU CHIYUUICHI
IPC分类号： C02F1/42 , C02F1/58 , C02F1/66 , C02F1/68
摘要： PURPOSE:To perform crystallization of calcium phosphate efficiently by allowing water contg. phosphate to contact with seed crystal contg. calcium phosphate at >=6pH in the presence of Ca ion and then allowing the water to contact with H type ion exchange body, and using the ion exchange body repeatedly. CONSTITUTION:Water contg. phosphate is allowed to contact with seed crystal contg. calcium phosphate in a fixed bed type or fluidized bed type apparatus at >=6pH in the presence of Ca ion. The water is then allowed to contact with H type ion exchange body, and the ion exchange body is regenerated and used repeatedly. Useful seed crystal contg. calcium phosphate is hydroxyapatite, fluoroapatite, or tricalcium silicate, etc., and natural phosphate ore, or bone charcoal are preferred. When the water is allowed to contact with seed crystal contg. calcium phosphate, generated calcium phosphate deposits on the surface of the seed crystal to cause growth of the crystal, and PO4 ion in the water is removed.

78. 发明专利

JPS607992A FLUIDIZED BED TYPE DEPHOSPHORIZATION APPARATUS 失效
公开(公告)号：JPS607992A
公开(公告)日：1985-01-16
申请号：JP11605883
申请日：1983-06-29
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI , JIYOUKOU ISAO , GOTOU CHIYUUICHI
IPC分类号： C02F1/58 , B01J8/20 , B01J8/24 , B01J8/28
摘要： PURPOSE:To remove phosphate ions effectively by providing a means for feeding seed crystals to a fluidized bed, a means for feeding upward flow of raw water to the fluidized bed, a means for discharging water in the fluidized bed and seed crystals out of the system, and a means for classifying discharged seed crystals, etc. CONSTITUTION:Seed crystals are fed to a contact layer at the uppermost stage through a feeding pipe 4, and raw water is fed to below a supporting plate 2' at the lowest stage through a water feeding pipe 5 to flow upward in the column through nozzles on each supporting plate. Seed crystals constituting contact layers on each stage are fluidized boisterously to remove phosphate ions in the water by crystallization reaction, and treated water is transferred to an overflow weir 6 at the top of the column. During operation, Ca agent, alkali agent, and crystallization accelerator (e.g. chlorinecontg. agent, fluoride, etc.) are injected by a chemical injecting device 7 into the raw water. If necessary, the Ca agent, alkali agent, and crystallization accelerating agent are injected also into the fluidized bed at each stage by a chemical injecting device 7.

79. 发明专利

JPS59162998A Dephosphorization 失效
标题翻译：脱磷
公开(公告)号：JPS59162998A
公开(公告)日：1984-09-13
申请号：JP3794383
申请日：1983-03-08
申请人： Kurita Water Ind Ltd
发明人： JIYOUKOU ISAO , SAWADA SHIGEKI , FUKASE TETSUROU , GOTOU CHIYUUICHI
IPC分类号： C02F1/58 , C02F3/30
摘要： PURPOSE: To stabilize the concentration of phosphorus in finally treated water, in anaerobic and aerobic treatments for waste water disposal, by adding a calcium agent to precipitate calcium phosphate when the concentration of phosphorus in an anaerobic tank exceeds a predetermined value.
CONSTITUTION: Raw water is supplied to a primary precipitation tank 1, and the resulting supernatant liquid is supplied together with returned sludge from a returning pipe 9 to a denitrification tank 2 and an anaerobic tank 3 to sequentially perform anaerobic treatment, aerated in an aerobic tank 4 and then separated into a liquid and solid matter in a final precipitation tank 5. In this disposal process, when the concentration of phosphorus exceeds a predetermined value with the increase of the amount of phosphorus discharged in the anaerobic tank 3, a calcium or alkali agent is added through a chemical feeder pipe 6 to make said concentration suited to the precipitation of calcium phosphate. Hence, excess phosphorus above the predetermined concentration is precipitated in the state of calcium phosphate, and the interior of the anaerobic tank 3 is maintained below the predetermined concentration. Hereon, said predetermined concentration of phosphorus is preferably about 15mg/l in general.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了稳定最终处理水中的磷浓度，在废水处理的厌氧和需氧处理中，当厌氧池中的磷浓度超过预定值时，通过添加钙剂来沉淀磷酸钙。构成：将原水供给到一次沉淀池1，将所得上清液与返回的污泥一起从返回管9供给到脱氮罐2和厌氧罐3，以依次进行厌氧处理，在需氧罐中充气 4，然后在最终的沉淀槽5中分离为液体和固体物质。在该处理过程中，当磷的浓度随着厌氧池3中排出的磷的量的增加而超过预定值时，钙或碱通过化学进料管6加入试剂以使所述浓度适合于磷酸钙的沉淀。因此，超过规定浓度的过量的磷在磷酸钙的状态下析出，使厌氧槽3的内部保持在规定浓度以下。因此，所述磷的预定浓度通常优选为约15mg / l。

80. 发明专利

JPS59109295A Treatment of sludge 失效
标题翻译：污泥处理
公开(公告)号：JPS59109295A
公开(公告)日：1984-06-23
申请号：JP21812082
申请日：1982-12-13
申请人： Kurita Water Ind Ltd
发明人： YOSHIKI JIYUNICHI , JIYOUKOU ISAO , SAWADA SHIGEKI , GOTOU CHIYUUICHI
IPC分类号： C02F11/04
CPC分类号： Y02E50/343
摘要： PURPOSE: To prevent elution of phosphorus in a separated liquid by subjecting phosphorus-contg. sludge to elution of phosphorus in an anaerobic state in the presence of calcium ion and under a condition of 6W9.5pH and subjecting the same to a solid-liquid sepn. after crystallizing the phosphorus.
CONSTITUTION: Excess sludge is introduced through a sludge discharging pipe 13 into a sludge stagnation tank 6, where slaked lime is added to the sludge through a chemical feed pipe 15 and the sludge is stagnated for 1W2 days in the presence of calcium ion and under a condition of 6W9.5pH, that is, under the condition under which calcium phosphate is formed. The sludge is slowly agitated during this time under the isolation from air, whereby the anaerobic treatment is executed. The fine crystal of calcium phosphate is generated in a sludge stagnation tank 16, and the pohsopate ion is insolubilized successively by the growing phenomenon of the crystal. The sludge subjected to the anaerobic treatment in the tank 6 is introduced through a communication pipe 16 into a concentrating tank 17 where the sludge is subjected to a solid-liquid sepn. and is thus concd.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为防止分离液体中磷的磷污染。污泥在钙离子存在下在厌氧状态下溶解磷，并在6-9.5pH的条件下进行处理，并对其进行固液分离。使磷结晶。构成：通过污泥排放管13将过量污泥通过污泥停滞罐6引入，其中通过化学进料管15将淤泥加入到污泥中，并且在钙离子存在下将污泥停滞1-2天; 在6-9.5pH的条件下，即在形成磷酸钙的条件下。在这段时间内，与空气隔离，缓慢搅拌污泥，进行厌氧处理。在污泥停滞罐16中产生磷酸钙的微细结晶，并且由于晶体的生长现象，磷酸根离子依次不溶解。在罐6中进行厌氧处理的污泥通过连通管16引入浓缩槽17中，在该浓缩槽17中，污泥经受固液分离。因此是一致的。

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