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公开(公告)号：US20080149227A1
公开(公告)日：2008-06-26
申请号：US11645447
申请日：2006-12-26
IPC分类号： C23C8/00
CPC分类号： C23C8/20
摘要： A method of oxygen-free heat treatment of a steel part in an atmospheric pressure furnace is disclosed. The present method employs an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies as a function of time, with the balance of the gas atmosphere being nitrogen. The presently disclosed oxygen-free heat treatment process, preferably a carburization process, uses a precisely controlled atmosphere to minimize inter-granular oxidation, eliminate the formation of soot and cementite or other metallic carbides, and avoid hydrogen embrittlement.
摘要翻译： 公开了一种在大气压力炉中对钢部件进行无氧热处理的方法。 本方法采用无氧的可控气体气氛，包括浓度在约1.0％至10.0％之间的氢气，烃气体（如丙烯）的浓度在约0.1％至10.0％之间，其浓度随时间而变化， 气体气氛的平衡是氮气。 目前公开的无氧热处理方法，优选渗碳方法，使用精确控制的气氛以使颗粒间氧化最小化，消除烟灰和渗碳体或其它金属碳化物的形成，并避免氢脆化。
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公开(公告)号：US20080149225A1
公开(公告)日：2008-06-26
申请号：US11959825
申请日：2008-02-14
IPC分类号： C23C8/20
摘要： A method of oxygen-free heat treatment of a steel part in an atmospheric pressure furnace is disclosed. The present batch treatment process employs an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies as a function of time, with the balance of the gas atmosphere being nitrogen. The present continuous furnace treatment process employs a plurality of zones with each zone including an oxygen-free controlled gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent that varies across the different zones, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies across the different zones, with the balance of the gas atmosphere within each zone being nitrogen. The presently disclosed oxygen-free heat treatment processes, preferably carburization processes, use a precisely controlled atmosphere to minimize inter-granular oxidation, eliminate the formation of soot and cementite or other metallic carbides, and avoid hydrogen embrittlement.
摘要翻译： 公开了一种在大气压力炉中对钢部件进行无氧热处理的方法。 本批次处理方法采用无氧可控气体气氛，其中浓度为约1.0％至10.0％之间的氢气，烃类气体（如丙烯）的浓度为约0.1％至10.0％，其浓度为 时间，天然气气氛的平衡是氮气。 本连续炉处理方法采用多个区域，每个区域包括无氧的可控气体气氛，包括在不同区域之间变化的浓度在约1.0％至10.0％之间的氢气，烃气体如丙烯， 在不同区域之间变化的约0.1％和10.0％之间的浓度，每个区域内的气体气氛的平衡是氮气。 目前公开的无氧热处理方法，优选渗碳方法，使用精确控制的气氛以使颗粒间氧化最小化，消除烟灰和渗碳体或其它金属碳化物的形成，并避免氢脆化。
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公开(公告)号：US20080149226A1
公开(公告)日：2008-06-26
申请号：US11645443
申请日：2006-12-26
IPC分类号： C23C8/00
摘要： A method of controlling an oxygen-free heat treating process in an atmospheric pressure furnace is disclosed. The present method employs an oxygen-free gas atmosphere including hydrogen gas in concentrations between about 1.0 percent to 10.0 percent, a hydrocarbon gas, such as propylene, in concentrations of between about 0.1 percent and 10.0 percent that varies as a function of time, with the balance of the gas atmosphere being nitrogen. The presently disclosed oxygen-free carburization process uses a precisely controlled gas atmosphere to minimize inter-granular oxidation, eliminate the formation of soot and cementite, and avoid hydrogen embrittlement.
摘要翻译： 公开了一种在大气压力炉中控制无氧热处理工艺的方法。 本发明方法采用无氧气体气氛，其中浓度为约1.0％至10.0％之间的氢气，烃气体（例如丙烯）的浓度为约0.1％至10.0％，其浓度随时间而变化， 天然气气氛的平衡是氮气。 目前公开的无氧渗碳方法使用精确控制的气体气氛来最小化颗粒间氧化，消除烟灰和渗碳体的形成，并避免氢脆化。
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4.发明授权System for activated sludge wastewater treatment with high dissolved oxygen levels 失效高溶解氧水平的活性污泥废水处理系统公开(公告)号：US07699980B2
公开(公告)日：2010-04-20
申请号：US12117785
申请日：2008-05-09
申请人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
发明人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
IPC分类号： C02F3/00
CPC分类号： C02F3/12 , B01F3/04609 , B01F13/0049 , C02F3/16 , C02F3/206 , C02F3/26 , C02F2209/001 , C02F2209/10 , C02F2209/22 , Y02W10/15
摘要： An activated sludge wastewater treatment system is provided. The disclosed system includes: an uncovered activated sludge basin; a high purity oxygen aeration system; a secondary clarifier; a return activated sludge line and a waste activated sludge line; wherein the system operates at a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor; a dissolved oxygen level in the aeration basin in the range of between about 5 mg to 15 mg; and a solids retention time of between about 7 days and 40 days.
摘要翻译： 提供了一种活性污泥废水处理系统。 所公开的系统包括：未被覆盖的活性污泥池; 高纯度氧气曝气系统; 次级澄清器 回收活性污泥生产线和废活性污泥生产线; 其中所述系统以每升混合液体约3000mg至约10000mg悬浮固体之间的固体负载运行; 在曝气池中的溶解氧水平在约5mg至15mg之间的范围内; 固体保留时间为约7天至40天。
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5.发明授权Method for activated sludge wastewater treatment with high dissolved oxygen levels 失效高溶解氧水平的活性污泥废水处理方法公开(公告)号：US07699986B2
公开(公告)日：2010-04-20
申请号：US12117791
申请日：2008-05-09
申请人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
发明人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
IPC分类号： C02F3/00
CPC分类号： C02F3/12 , B01F3/04609 , B01F13/0049 , C02F3/16 , C02F3/206 , C02F3/26 , C02F2209/001 , C02F2209/10 , C02F2209/22 , Y02W10/15
摘要： An activated sludge wastewater treatment method is provided. The disclosed method includes: receiving a stream of wastewater into a mixed liquor in an uncovered activated sludge basin; introducing high purity oxygen to the mixed liquor in the activated sludge basin to produce euoxic conditions (i.e. a dissolved oxygen level in the range of between about 5 mg to 15 mg) in the activated sludge basin; passing a portion of the mixed liquor in the activated sludge basin through a clarifier to separate activated sludge and produce an effluent stream and an activated sludge stream; and recycling a portion of the activated sludge stream to the activated sludge basin to produce a mixed liquor having a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor and a solids retention time of between about 7 days and 40 days.
摘要翻译： 提供了一种活性污泥废水处理方法。 所公开的方法包括：将废水流接收到未覆盖的活性污泥池中的混合液中; 向活性污泥池中的混合液中引入高纯度的氧气，以产生活性污泥池中的无氧条件（即溶解氧水平在约5mg至15mg之间）; 将活性污泥池中的一部分混合液通过澄清器分离出活性污泥并产生流出物流和活性污泥流; 并将活性污泥流的一部分再循环到活性污泥池中以产生每升混合液体的固体负载量为约3000mg至约10000mg悬浮固体和约7天之间的固体保留时间的混合液 和40天。
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6.发明申请SYSTEM FOR ACTIVATED SLUDGE WASTEWATER TREATMENT WITH HIGH DISSOLVED OXYGEN LEVELS 失效高分解氧化水平的活性污泥废水处理系统公开(公告)号：US20090050552A1
公开(公告)日：2009-02-26
申请号：US12117785
申请日：2008-05-09
申请人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
发明人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
IPC分类号： C02F3/12
CPC分类号： C02F3/12 , B01F3/04609 , B01F13/0049 , C02F3/16 , C02F3/206 , C02F3/26 , C02F2209/001 , C02F2209/10 , C02F2209/22 , Y02W10/15
摘要： An activated sludge wastewater treatment system is provided. The disclosed system includes: an uncovered activated sludge basin; a high purity oxygen aeration system; a secondary clarifier; a return activated sludge line and a waste activated sludge line; wherein the system operates at a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor; a dissolved oxygen level in the aeration basin in the range of between about 5 mg to 15 mg; and a solids retention time of between about 7 days and 40 days.
摘要翻译： 提供了一种活性污泥废水处理系统。 所公开的系统包括：未被覆盖的活性污泥池; 高纯度氧气曝气系统; 次级澄清器 回收活性污泥生产线和废活性污泥生产线; 其中所述系统以每升混合液体约3000mg至约10000mg悬浮固体之间的固体负载运行; 在曝气池中的溶解氧水平在约5mg至15mg之间的范围内; 固体保留时间为约7天至40天。
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7.发明申请METHOD FOR ACTIVATED SLUDGE WASTEWATER TREATMENT WITH HIGH DISSOLVED OXYGEN LEVELS 失效高分解氧化水平活性污泥废水处理方法公开(公告)号：US20090050562A1
公开(公告)日：2009-02-26
申请号：US12117791
申请日：2008-05-09
申请人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
发明人： Richard A. Novak , Malcolm Fabiyi , Amitabh Gupta
IPC分类号： C02F3/26
CPC分类号： C02F3/12 , B01F3/04609 , B01F13/0049 , C02F3/16 , C02F3/206 , C02F3/26 , C02F2209/001 , C02F2209/10 , C02F2209/22 , Y02W10/15
摘要： An activated sludge wastewater treatment method is provided. The disclosed method includes: receiving a stream of wastewater into a mixed liquor in an uncovered activated sludge basin; introducing high purity oxygen to the mixed liquor in the activated sludge basin to produce euoxic conditions (i.e. a dissolved oxygen level in the range of between about 5 mg to 15 mg) in the activated sludge basin; passing a portion of the mixed liquor in the activated sludge basin through a clarifier to separate activated sludge and produce an effluent stream and an activated sludge stream; and recycling a portion of the activated sludge stream to the activated sludge basin to produce a mixed liquor having a solids loading of between about 3000 mg and about 10000 mg of suspended solids per liter of mixed liquor and a solids retention time of between about 7 days and 40 days.
摘要翻译： 提供了一种活性污泥废水处理方法。 所公开的方法包括：将废水流接收到未覆盖的活性污泥池中的混合液中; 向活性污泥池中的混合液中引入高纯度的氧气，以产生活性污泥池中的无氧条件（即溶解氧水平在约5mg至15mg之间）; 将活性污泥池中的一部分混合液通过澄清器分离出活性污泥并产生流出物流和活性污泥流; 并将活性污泥流的一部分再循环到活性污泥池中以产生每升混合液体的固体负载量为约3000mg至约10000mg悬浮固体和约7天之间的固体保留时间的混合液 和40天。
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公开(公告)号：US20170014782A1
公开(公告)日：2017-01-19
申请号：US15274507
申请日：2016-09-23
CPC分类号： B01F3/04539 , B01F3/04106 , B01F3/04262 , B01F3/04609 , B01F7/00358 , B01F7/00733 , B01F13/0049 , B01F2003/04553 , B01F2003/04666 , B01F2003/04673 , B01F2003/0468 , B01F2003/04709 , B01F2215/0431 , C02F3/1284 , C02F3/16 , C02F3/206 , C02F3/26 , C02F2101/301 , Y02W10/15
摘要： A method and apparatus for injecting a gas into a liquid in which a rotating helical impeller within a draft tube submerged in the liquid creates a liquid flow within the draft tube. Gas bubbles are injected into the draft tube either above or below or alongside the helical impeller or in all three locations. The liquid is drawn into the draft tube with a superficial velocity greater than a substantially uniform terminal ascent velocity of the gas bubbles to allow entrainment of undissolved gas bubbles in the bulk liquid into the liquid being drawn into the draft tube. The gas bubbles are injected with a uniform diameter of between about 10.0 microns and about 1.0 millimeters. The small bubble size enhances the dissolution of the gas into the liquid and also allow the entrainment of the gas into the liquid being drawn into the draft tube.
摘要翻译： 一种用于将气体注入液体中的方法和装置，其中在浸没在液体中的引流管内的旋转螺旋叶轮在引流管内产生液体流。 在螺旋叶轮的上方或下方或旁边，或者在所有三个位置，将气泡注入引流管。 液体以大于气泡的基本上均匀的终点上升速度的表观速度被吸入引流管，以允许将本体液体中未溶解的气泡夹带到被引入引流管的液体中。 气泡以约10.0微米至约1.0毫米的均匀直径喷射。 小的气泡尺寸增加了气体溶解到液体中并且还允许将气体夹带到被吸入引流管的液体中。
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公开(公告)号：US20130140232A1
公开(公告)日：2013-06-06
申请号：US13690956
申请日：2012-11-30
IPC分类号： C02F1/78
CPC分类号： C02F1/78 , C02F1/20 , C02F3/006 , C02F3/1221 , C02F3/14 , C02F3/26 , C02F3/301 , C02F2209/003 , C02F2209/005 , C02F2209/02 , C02F2209/03 , C02F2209/22 , C02F2209/225 , C02F2209/23 , C02F2209/245 , C02F2209/38 , C02F2209/40 , C02F2301/043 , C02F2301/046 , C02F2303/04 , C02F2303/18 , Y02W10/15
摘要： A system and method for ozone vent gas reuse is provided. The disclosed system and method involve controlling or conditioning the ozone vent gas stream or degassing unit vent gas stream and directing the stream to a mechanically agitating contactor in an aerobic section of the wastewater treatment system. The oxygen content of the vent gas stream is controlled so as to ensure sufficient oxygenation to the aerobic section of the wastewater treatment system. Control may be effected by adjusting the oxygen content of the vent gas stream in response to sensor or measurement inputs characterizing the gas contents of the vent gas stream or the dissolved oxygen levels. The volumetric flow of the vent gas stream to the aerobic section may also be controlled by adjusting the rotational speed of the mechanically agitating contactor in an aerobic section of the wastewater treatment system.
摘要翻译： 提供臭氧排放气体再利用的系统和方法。 所公开的系统和方法包括控制或调节臭氧排出气流或脱气单元排出气流，并将流引导到废水处理系统的需氧段中的机械搅拌接触器。 排出气流的氧含量被控制，以确保足够的氧合给废水处理系统的需氧段。 控制可以通过响应于表征排放气体流的气体含量或溶解氧水平的传感器或测量输入来调节排放气体流的氧含量来实现。 也可以通过调节废水处理系统的需氧部分中的机械搅拌接触器的转速来控制排气流到好氧段的体积流量。
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公开(公告)号：US20130140231A1
公开(公告)日：2013-06-06
申请号：US13685330
申请日：2012-11-26
申请人： Richard A. Novak , Malcom E. Fabiyi
发明人： Richard A. Novak , Malcom E. Fabiyi
IPC分类号： C02F3/30
CPC分类号： C02F1/78 , C02F1/20 , C02F3/006 , C02F3/1221 , C02F3/14 , C02F3/26 , C02F3/301 , C02F2209/003 , C02F2209/005 , C02F2209/02 , C02F2209/03 , C02F2209/22 , C02F2209/225 , C02F2209/23 , C02F2209/245 , C02F2209/38 , C02F2209/40 , C02F2301/043 , C02F2301/046 , C02F2303/04 , C02F2303/18 , Y02W10/15
摘要： Method and system for treating wastewater includes treating sludge with ozone in a plug-flow type reactor to cause lysis of biosolids in the sludge. The ozonated sludge may be provided to an anaerobic or anoxic section of the wastewater treatment system to aid the denitrification processes occurring in the anaerobic or anoxic section of the wastewater treatment system or to other sections of the wastewater treatment system such as a fermenter, an aerobic digester, or an anaerobic digester.
摘要翻译： 用于处理废水的方法和系统包括在活塞式反应器中用臭氧处理污泥以引起污泥中生物固体的裂解。 可以将臭氧化污泥提供给废水处理系统的厌氧或缺氧部分，以帮助在废水处理系统的厌氧或缺氧部分或废水处理系统的其它部分（例如发酵罐，有氧）中发生的脱氮过程 蒸煮器或厌氧消化器。
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