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公开(公告)号:US06838069B2
公开(公告)日:2005-01-04
申请号:US10346896
申请日:2003-01-17
CPC分类号: B01D53/0423 , B01D53/04 , B01D53/10 , B01D2253/10 , B01D2253/104 , B01D2253/1085 , B01D2253/202 , B01D2253/206 , B01D2257/406 , B01D2259/40088 , B01D2259/40092 , B01J20/06 , B01J20/3433 , B01J20/3475 , B01J45/00 , B01J49/53 , Y10S210/903
摘要: Apparatus, materials, and methods for removing ammonia from fluid using metal hydroxides (e.g. zinc hydroxide) and metal cation loaded media (e.g. zinc loaded ion exchange resins); the metal hydroxides and metal cation loaded media may be regenerated with a weak acid (pKa between 3 and 7). Alternatively, ammonia is removed from fluids by using H2SO4 and ZnSO4 and metal cation loaded media; the metal cation loaded media may be regenerated with H2SO4 and ZnSO4; the ammonia containing H2SO4 and H2SO4 may be concentrated as necessary to form (NH4)2SO4.ZnSO4.6H2O (ammonium zinc sulfate hexahydrate) crystals. These crystals are removed from the mother liquor and heated to temperatures exceeding 200° C. releasing NH3 and H2O vapor upon the decomposition of the crystals.
摘要翻译: 使用金属氢氧化物(例如氢氧化锌)和金属负载介质(例如负载锌的离子交换树脂)从流体中除去氨的设备,材料和方法; 金属氢氧化物和金属负载介质可以用弱酸(pKa在3和7之间)再生。 或者,通过使用H 2 SO 4和ZnSO 4和金属负载介质从流体中除去氨; 金属负载介质可以用H 2 SO 4和ZnSO 4再生; 可以根据需要浓缩含有H 2 SO 4和ZnSO 4的氨以形成(NH 4)2 SO 4·ZnSO 4·6H 2 O(六水合硫酸锌)晶体。 将这些晶体从母液中除去并加热到超过200℃的温度,在晶体分解时释放出NH 3和H 2 O的蒸气。
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公开(公告)号:US5221486A
公开(公告)日:1993-06-22
申请号:US685259
申请日:1991-04-12
申请人: Alex G. Fassbender
发明人: Alex G. Fassbender
IPC分类号: C02F1/02 , C02F1/58 , C02F101/16 , C02F103/16
CPC分类号: C02F1/025 , C02F2101/16 , C02F2303/08 , Y10S210/903 , Y10S210/908
摘要: A method is disclosed for denitrification of compounds containing nitrogen present in aqueous waste streams. The method comprises the steps of (1) identifying the types of nitrogen compounds present in a waste stream, (2) determining the concentrations of nitrogen compounds, (3) balancing oxidized and reduced form of nitrogen by adding a reactant, and (4) heating the mixture to a predetermined reaction temperature from about 300.degree. C. to about 600.degree. C., thereby resulting in less harmful nitrogen and oxygen gas, hydroxides, alcohols, and hydrocarbons.
摘要翻译: 公开了一种用于使存在于含水废物流中的含氮化合物脱氮的脱氮的方法。 该方法包括以下步骤:(1)确定存在于废物流中的氮化合物的类型,(2)确定氮化合物的浓度,(3)通过加入反应物平衡氧化和还原形式的氮,和(4) 将混合物加热到约300℃至约600℃的预定反应温度,从而导致较少有害的氮和氧气,氢氧化物,醇和烃。
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公开(公告)号:US5433868A
公开(公告)日:1995-07-18
申请号:US118707
申请日:1993-09-09
申请人: Alex G. Fassbender
发明人: Alex G. Fassbender
CPC分类号: C02F11/08 , C02F1/025 , C02F1/586 , C02F1/76 , C02F11/086 , Y02W10/37 , Y10S210/903
摘要: The invention greatly reduces the amount of ammonia in sewage plant effluent. The process of the invention has three main steps. The first step is dewatering without first digesting, thereby producing a first ammonia-containing stream having a low concentration of ammonia, and a second solids-containing stream. The second step is sending the second solids-containing stream through a means for separating the solids from the liquid and producing an aqueous stream containing a high concentration of ammonia. The third step is removal of ammonia from the aqueous stream using a hydrothermal process.
摘要翻译: 本发明大大降低了污水处理厂废水中氨的含量。 本发明的方法有三个主要步骤。 第一步是在没有首先消化的情况下脱水,从而产生具有低浓度氨的第一含氨物流和第二含固体物流。 第二步是通过用于将固体与液体分离并产生含有高浓度氨的水流的装置来送出第二含固体物流。 第三步是使用水热法从水流中除去氨。
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