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1. 发明专利

JPH1099898A TREATMENT OF WASTE WATER IN WASTE REFUSE INCINERATION TREATMENT FACILITIES 失效
公开(公告)号：JPH1099898A
公开(公告)日：1998-04-21
申请号：JP25427196
申请日：1996-09-26
申请人： HITACHI SHIPBUILDING ENG CO
发明人： OBATA HIROICHI , DEGUCHI HIDETOSHI , MINO SADAO
IPC分类号： C02F9/00 , C02F1/52 , C02F3/06
摘要： PROBLEM TO BE SOLVED: To miniaturize treatment equipment by adding a chemical agent consisting of an alkali agent, a flocculant and a flocculation aid to inorg. waste water not only to insolubilize heavy metals as hydroxides but also to flocculate a suspended substance to sediment and separate them and mixing org. waste water with supernatant waste water to biologically treat org. matter. SOLUTION: Inorg. waste water stored in a first raw water tank 1 is sent to a reaction tank 2 and a chemical agent, a flocculant and a flocculation aid is added to inorg. waste water not only to insolubilize heavy metals as hydroxides but also to flocculate a suspended substance. Next, this inorg. waste water is sent to a sedimentation tank 3 and, after flocs are sedimented and separated, alkaline supernatant waste water is sent to a neutralization tank 4 and a neutralizing agent is added to the supernatant waste water to neutralize the same. Subsequently, the waste water is sent to a second raw water tank 5 to be stored therein and org. waste water is added to the waste water and this mixed waste water is sent to a biological treatment tank 6 and org. matter is metabolized and decomposed by aerobic bacteria bonded to a contact material. Thereafter, the waste water is sent to a sedimentation tank 7 and sludge composed of decomposed matter of org. matter is sedimented and separated to be sent to a treated water tank 8.

2. 发明专利

JPH09225255A SUPPLY DEVICE OF HARMFUL COMPONENT REMOVING AGENT 失效
公开(公告)号：JPH09225255A
公开(公告)日：1997-09-02
申请号：JP3254396
申请日：1996-02-21
申请人： HITACHI SHIPBUILDING ENG CO
发明人： OBATA HIROICHI , MAEKAWA TOSHIHIRO , DEGUCHI HIDETOSHI
IPC分类号： B01D53/34 , B01D53/50 , B01D53/81
摘要： PROBLEM TO BE SOLVED: To prevent from clogging of a harmful component removing agent, especially slaked lime by providing removing agent supply piping connected with a blower at the end part in midway of exhaust pipeline, and besides connecting with an auxiliaries extracting device and a slaked lime extracting device, in midway of the removing agent supply pipeline. SOLUTION: In midway of pipeline 3 for discharging the exhaust gas discharged from a waste incineration furnace 1 through a chimney 2 into the air, a bag filter 4 and an induced draft fun 5, etc., are arranged. In order to remove harmful components such as Cl, S, etc., in the exhaust gas, a device 11 for feeding the harmful component removing agent consisting of slaked lime and auxiliaries, is connected in midway of the pipeline 3. The device 3 is connected with the removing agent supply pipeline 13 connected with a blower 12 at the end part, and with the auxiliaries extracting device 14 at the upperstream side and the slaked lime extracting device 15 at the downstream side. Then, even though the slaked lime sticks on an inside wall surface of the pipeline, the inside wall surface is rubbed with the auxiliaries from the upperstream and then the slaked lime is naturally dropped off.

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