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1. 发明专利

JPS5348350A PROCESS FOR RENDERING HEXAVALENT CHROMIUM CONTAINING WASTE WATER HARMLESS AND SOLIDIFYING THE SAME 失效
公开(公告)号：JPS5348350A
公开(公告)日：1978-05-01
申请号：JP12282976
申请日：1976-10-15
申请人： HITACHI LTD
发明人： SHIMOKAWABE IKUO , OOTANI KOUJI , KOMORI SHINJI
IPC分类号： C25D21/18 , C02F1/70 , F23G7/00
摘要： PURPOSE:To provide a process for rendering hexavalent chromium containing waste water harmless and solidifying the same, which comprises subjecting hexavalent chromium containing waste water adjusted to a pH value of less than 3 to a contact treatment with a carbonaceous material, and burning the thus obtained sludge thereby to obtain a solid of which no hexavalent chromium melts out.

2. 发明专利

JPS5199688A HAIEKIMATAHA YOEKINO GYAKUSHINTOSHORIHOOYOBI SONOSOCHI 失效
公开(公告)号：JPS5199688A
公开(公告)日：1976-09-02
申请号：JP2392375
申请日：1975-02-28
申请人： HITACHI LTD , HITACHI PLANT ENG & CONSTR CO
发明人： EBARA KATSUYA , TAKAHASHI AKYOSHI , OGAWA TOSHIO , SAWA TOSHIO , NISHIMURA NARIOKI , YOSHIKAWA SEIICHI , KOMORI SHINJI
IPC分类号： C02F1/44 , B01D61/02 , B01D61/54 , B01D61/58 , B01D65/08 , C02F1/58

3. 发明专利

JPS5199686A HAIEKIMATAHA YOEKINO GYAKUSHINTOSHORIHOOYOBI SONOSOCHI 失效
公开(公告)号：JPS5199686A
公开(公告)日：1976-09-02
申请号：JP2392175
申请日：1975-02-28
申请人： HITACHI LTD , HITACHI PLANT ENG & CONSTR CO
发明人： EBARA KATSUYA , TAKAHASHI AKYOSHI , OGAWA TOSHIO , SAWA TOSHIO , NISHIMURA NARIOKI , YOSHIKAWA SEIICHI , KOMORI SHINJI
IPC分类号： C02F1/44 , B01D61/02 , B01D65/02 , B01D65/04 , B01D65/08

4. 发明专利

JPS5199684A 失效
公开(公告)号：JPS5199684A
公开(公告)日：1976-09-02
申请号：JP2391875
申请日：1975-02-28
申请人： HITACHI LTD , HITACHI PLANT ENG & CONSTR CO
发明人： OGAWA TOSHIO , EBARA KATSUYA , TAKAHASHI AKYOSHI , KOMORI SHINJI
IPC分类号： C02F1/44 , B01D61/02 , B01D61/08 , B01D61/10 , B01D61/14 , B01D61/18 , B01D61/20 , B01D61/58

5. 发明专利

JPS59150579A Heavy corrosion-preventing coating method for equipment 失效
标题翻译：重型防腐蚀涂料涂装方法
公开(公告)号：JPS59150579A
公开(公告)日：1984-08-28
申请号：JP2381883
申请日：1983-02-17
申请人： Hitachi Kyowa Kogyo Kk , Hitachi Ltd
发明人： KUWANA YUUJI , KOMORI SHINJI
IPC分类号： B05D7/24 , B05D1/36 , B05D3/12 , B05D7/14
摘要： PURPOSE: To inhibit the penetration of oils into a coating film, by mist coating the coating film of zinc-rich paint formed by undercoating with paint usable as an intermediate or finish coat, in advance of a working step.
CONSTITUTION: A workpiece to be coated formed into equipment to some extent, e.g. the frame of a stator for the power generator of a steam turbine, is shot blasted, and then inorganic zinc-rich paint is immediately applied to thickness of 50W100μm onto the workpiece to be coated. After the lapse of an interval of 24hr, epoxy intermediate or finish coat paint diluted by adding a solvent for exclusive use to it is applied by mist coating. Then, the workpiece is handled in a working step, i.e. machining, assembling and experimental driving. Since the workpiece is large-sized equipment, it is handled in a decomposing step. In addition, the workpiece is roughened with sand paper #60 and then washed with a solvent.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了抑制油渗透到涂膜中，通过在工作步骤之前，通过底漆涂覆形成的可用作中间漆或涂层的油漆而形成的富锌涂料的涂膜。构成：待涂覆的工件在一定程度上形成设备，例如用于蒸汽轮机的发电机的定子的框架进行喷丸处理，然后将无机富锌涂料立即施加到待涂覆的工件上，厚度为50-100μm。间隔24小时后，通过添加专用溶剂稀释后的环氧中间体或精加工涂料涂布。然后，在加工步骤，即加工，组装和实验驱动下处理工件。由于工件是大型设备，故在分解步骤中处理。此外，用砂纸＃60将工件粗糙化，然后用溶剂洗涤。

6. 发明专利

JPS5413494A SLUDGE TREATING METHOD 失效
公开(公告)号：JPS5413494A
公开(公告)日：1979-01-31
申请号：JP7790877
申请日：1977-07-01
申请人： HITACHI LTD
发明人： OOTANI KOUJI , YOSHIKAWA SEIICHI , KOMORI SHINJI
IPC分类号： C02F11/00 , F23G7/00
摘要： PURPOSE:To prevent the fusion and sticking of sludge contg. Ca salt of hydrofluoric acid or phosphoric acid and form clinker of good quality by granulating the sludge prior to calcination in a calcination furnace.

7. 发明专利

JPS53107149A METHOD OF SIMULTANEOUSLY TREATING HEAVY METALS AND COD IN WASTE WATER 失效
公开(公告)号：JPS53107149A
公开(公告)日：1978-09-18
申请号：JP2157677
申请日：1977-03-02
申请人： HITACHI LTD
发明人： NISHIMURA SHIGEOKI , SHIMADA KAZUNARI , KOMORI SHINJI
IPC分类号： C02F1/28 , C02F1/62
摘要： PURPOSE:To provide a method for simultaneously treating heavy metals and COD components, which comprises adding two-valent iron ions in waste water to oxidize and settle the same, whereby heavy metals and COD components of the waste water are simultaneously treated.

8. 发明专利

JPS5498042A PROCESS FOR TREATING WASTE SOLUTION CONTAINING FLUORIC ACID 失效
公开(公告)号：JPS5498042A
公开(公告)日：1979-08-02
申请号：JP370078
申请日：1978-01-19
申请人： HITACHI LTD
发明人： NISHIMURA SHIGEOKI , TAKAHASHI SANKICHI , KOMORI SHINJI
IPC分类号： C01B7/19 , C02F1/28 , C23G1/36
摘要： PURPOSE:To provide the subject process of subjecting a waste solution containing fluoric acid to active carbon adsorption treatment in the presence of a strong acid thereby to attempt to effectively recover fluoric acid and reduce the treatment cost. CONSTITUTION:When a mineral acid such as hydrochloric acid, sulfuric acid, nitric acid or the like is added to a fluoric acid-containing waste solution exhausted from plating and semiconductor industrial fields thereby to reduce the pH of the solution to less than 2.0 and active carbon is added to the solution, fluoric acid which is in the non-dissociative state is selectively and physically adsorbed. Then, the fluoric acid is recovered by being washed with high-temperature water of about 50 deg.C or is recovered as salt by being washed with alkali. According to this process, it is unnecessary to consume a large quantity of medicals unlike the case of using the conventional slaked lime treating process, it is possible to increase the quantity of calcium fluoride contained in the sludge thereby to remarkably reduce the quantity of the sludge generated.

9. 发明专利

JPS53146464A PROCESS FOR TREATING SLUDGE CONTAINING CALCIUM FLUORIDE 失效
公开(公告)号：JPS53146464A
公开(公告)日：1978-12-20
申请号：JP6110877
申请日：1977-05-27
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： MAEKOYA CHIAKI , OOTANI KOUJI , MIZUNIWA FUMIO , KOMORI SHINJI
IPC分类号： C02F11/00
摘要： PURPOSE:To provide the subject process comprising the steps of ; mixing a reducing agent in a sludge containing calcium fluoride, an burning the mixture, thereby decreasing the elution of hexavalent chromium.

10. 发明专利

JPS5199690A 失效
公开(公告)号：JPS5199690A
公开(公告)日：1976-09-02
申请号：JP2392575
申请日：1975-02-28
申请人： HITACHI LTD , HITACHI PLANT ENG & CONSTR CO
发明人： EBARA KATSUYA , OGAWA TOSHIO , TAKAHASHI AKYOSHI , KOMORI SHINJI
IPC分类号： B01D61/08 , B01D65/08

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