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41. 发明专利

JPS5712893A DISPOSAL OF WASTE WATER 失效
公开(公告)号：JPS5712893A
公开(公告)日：1982-01-22
申请号：JP8680880
申请日：1980-06-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： YAMAUCHI TOORU , UEDA RIYOUHEI , KAYANO ISAMU , TSUSHIMA TAKETOSHI , FUKUNAGA KAZUO
IPC分类号： C02F3/34
摘要： PURPOSE:To obtain dischargeable purified water with high efficiency, by adding an NO2 salt to waste water containing NH4 , polythionic acid, S-N compounds, etc., oxidizing the waste water with sludge containing sulfur bacteria and nitrifying bacteria, and then reducing nitrogen compounds in the waste water to N2 gas. CONSTITUTION:Waste water containing NH4 , NO2 , NO3 , polythionic acid and S-N compounds is introduced into a disposal vessel 3.The waste water in the vessel 3 is kept at pH about 4 or less and a temperature of about 60 deg.C or higher. NO2-N, having a concentration at least equal to an expected N concentration of the S-N compounds, is fed to the waste water, and the waste water is agitated to decompose the S-N compounds into N2 or N2O gas and SO4 . The treated waste water is let flow into a pH-adjusting vessel 4, where the waste water is neutralized at pH about 6-8. Thereafter, the waste water is oxidized by sulfur bacteria in an aerobic disposal vessel 11 containing a sulfur compound, e.g. SCN- or the like, as a nutritious source. the waste water is further introduced into an anaerobic denitrifying vessel 2 containing denitrifying bacteria, where the waste water is agitated and fluidized to reduce most of NO2 to N2 gas.

42. 发明专利

JPS55142592A WASTE WATER TREATING METHOD 失效
公开(公告)号：JPS55142592A
公开(公告)日：1980-11-07
申请号：JP4975279
申请日：1979-04-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAYANO ISAMU , SUGATA KIYOSHI
IPC分类号： C02F3/08
摘要： PURPOSE:To reduce the BOD load of a circular plate to a large extent and enhance the treatment efficiency by interposing the solid-liquid separating operation in case of biologically treating waste water by a rotary circular plate. CONSTITUTION:In case of biologically treating waste water by plural rotary plates 1, the solid-liquid separating operation is carried out in one or more place between a rotary circular plate. That is, when original waste water is flowed into a contact tank 2 from a line P1, sewage is purified because microorganism addered to a rotary circular plate 1 and the sewage is contacted in a rotary condition and a large amount of excessive sludge is generated. Subsequently, a mixed liquid P2 of the excessive sludge and the sewave and flowed into a solid-liquid separating tank 3 and the separated excessive sludge P4 is exhausted out of a system and the supernant P3 is again flowed into a contact tank 4. Therefore, because the excessive sludge is not blended into the supernant P3, BOD is largely reduced as well as BOD load applied to a contact tank 4 becomes low and the treating property is enhanced to a large extent.

43. 发明专利

JPS55100912A UTILIZATION OF CONVERTER SLUG 失效
公开(公告)号：JPS55100912A
公开(公告)日：1980-08-01
申请号：JP646779
申请日：1979-01-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： ISHIBASHI YASUMASA , KAYANO ISAMU
IPC分类号： C21C5/28 , C21C5/36 , F27D15/00
摘要： PURPOSE:To recover and utilize slug as starting materials of lime for a blast furnace or sintering furnace and as fertilizer or soil improver by a method wherein converter slug is crushed and part containing phosphorus and part containing iron oxide and lime are separated by the difference in their specific gravity. CONSTITUTION:Iron values such as iron oxide, particulate iron, lime value and phosphoric acid value are contained in converter slug. the slug is crushed, and particulate iron is separated by magnetic separation. The specific gravity of a mixed solution of thallium formate and thallium malonate is adjusted to 3.45 to form a specific gravity separation solution. Phosphoric acid-containing part is separated as floating phase and utilized as fertilizer or soil improver. The part precipitated by the specific gravity separation method is stirred in the aqueous solution consisting of the above components, the specific gravity of which is adjusted to 4.0, to precipitate and separate a part containing a large amount of iron oxide and lime. After drying, the part is effectively utilized as a substitute for lime which is used in a blast furnace or iron ore-sintering furnace.

44. 发明专利

JPS54154597A METHANE FERMENTATION 失效
公开(公告)号：JPS54154597A
公开(公告)日：1979-12-05
申请号：JP5996178
申请日：1978-05-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATOU ARATA , KAYANO ISAMU , SUGATA KIYOSHI , MATSUMOTO KAZUNORI
IPC分类号： C02F3/28 , C02F11/04 , C12P5/02
摘要： PURPOSE:A method of methane fermentation by a biochemical way utilizing organic waste in which a specific procedure is applied to reach the steady state of the fermentation in far shorter time than in the conventional process. CONSTITUTION:The organic waste to be treated, such as municipal, or industrial waste, primary waste in agriculture or fishery, is included with a group of methane bacteria, such as microorganisms belonging to methanosulcina, methanococcus or methanobacterium, and then charged into methane fermentator 3. A lower aliphatic acid or alcohol, such as acetic acid, butyric acid, methyl alcohol or ethyl alcohol, is fed from tank 1 into fermentator 3, to accelerate the grow of the methane bacteria. The methane fermentation is continued by feeding the organic waste from tank 1 into fermentator 3, and the gas emerged is recovered into tank 7.

45. 发明专利

JPS54104638A DEVICE FOR REMOVING RESIDUAL CHLORINE FROM COOLING WATER 失效
公开(公告)号：JPS54104638A
公开(公告)日：1979-08-17
申请号：JP1073978
申请日：1978-02-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： TSURU SATOSHI , KAYANO ISAMU , SUGATA KIYOSHI
IPC分类号： C02F1/58
摘要： PURPOSE:To eliminate bad influence of residual chlorine by providing in a cooling water conduit first and second detectors which detect residual chlorine in the used cooling water, providing between the detectors a neutralizer injection device which operates in response to the detected values, and providing a resistor between the injection device and the second detector. CONSTITUTION:Cooling brine is fed with chlorine from an inection port 4 and directed into a heat exchanger 2 via a conduit 1. Residual chlorine in the used cooling water is detected by a first detector which comprises a detection point S1 and an analyzer 7. A chlorine neutralizer injection device comprising pumps 9 and 10, neutralizer tank 11, and injection nozzle 5 is operated for injection of the neutralizer in accordance with the detected value. The mixture is passed through a resistor 6 for promotion of the mixing. The residual chlorine is again detected by a second detector comprising a detection point S2 and an analyzer 8, and the injection device is operated for injection of the neutralizer in accordance with the detected value. Thus residual chlorine is removed from brine, eliminating the bad influence of residual chlorine on fish and shellfishes.

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