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公开(公告)号：US4052301A
公开(公告)日：1977-10-04
申请号：US596162
申请日：1975-07-15
申请人： Rainer Klein , Jurgen Helberg
发明人： Rainer Klein , Jurgen Helberg
CPC分类号： C02F1/52 , C02F2101/20 , C02F2103/38
摘要： Extraction waste water produced upon the polymerization of olefins, which contains titanium and aluminum compounds and which is adjusted to a pH varying from 4.5 to 9.5. Hereby titanium and aluminum hydroxides occur in an easily precipitating state.
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公开(公告)号：US4049545A
公开(公告)日：1977-09-20
申请号：US703549
申请日：1976-07-08
申请人： Peter J. Horvath
发明人： Peter J. Horvath
CPC分类号： C02F3/1215 , C02F1/52 , C02F1/5236 , C02F1/66 , C02F1/72 , C02F9/00 , C02F1/78 , Y02W10/15 , Y02W10/37
摘要： A method of treating domestic, commercial or industrial waste water which includes the steps of mixing the waste water with a coagulant aid so as to bring the pH of the mixture to within a range of about 9.0-10.5, and thereafter adding precipitating agents in at least two successive steps so as to lower the pH of the mixture by about one unit for each step and thereby precipitate solids therefrom until the mixture is approximately neutral. After the addition of each precipitating agent, the precipitated solids are separated from the waste water effluent before the next succeeding precipitating agent is added. Preferably two such successive precipitation steps are performed, after which the resultant waste water effluent is treated with an oxidizing and disinfecting agent, filtered, and then treated with a further oxidizing and disinfecting agent to minimize the B.O.D. level. In the course of the process, a portion of the solids separated from the waste water effluent in the respective steps is preferably recycled into the treatment system by mixing it with new incoming waste water to partially take the place of the original coagulant aid. The preferred coagulant aid utilized is portland cement, with aluminum sulfate and copper sulfate preferably being used in sequence as the precipitating agents and potassium permanganate and ozone being used in sequence as the oxidizing and disinfecting agents.
摘要翻译： 一种处理家用，商业或工业废水的方法，其包括将废水与助凝剂混合以使混合物的pH达到约9.0-10.5的范围，然后将沉淀剂加入到 至少两个连续的步骤，以便每个步骤将混合物的pH降低大约一个单位，从而从其中沉淀出固体，直到混合物近似为中性。 加入每种沉淀剂后，将沉淀的固体与废水流出物分离，然后再加入下一个沉淀剂。 优选进行两个这样的连续沉淀步骤，然后用氧化和消毒剂处理所得废水流出物，过滤，然后用另外的氧化和消毒剂处理以最小化B.O.D. 水平。 在该过程中，在相应步骤中从废水流出物分离出的固体的一部分优选通过将其与新进入的废水混合而再次进入处理系统，以部分代替原始的助凝剂。 优选的助凝剂是波特兰水泥，硫酸铝和硫酸铜优选依次用作沉淀剂，高锰酸钾和臭氧按顺序用作氧化和消毒剂。
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23.发明授权Method for the disposal of waste water containing ammonium ions, sulfate ions and organic substances 失效处理含有铵离子，硫酸根离子和有机物质的废水的方法
公开(公告)号：US4045341A
公开(公告)日：1977-08-30
申请号：US674161
申请日：1976-04-06
IPC分类号： C02F1/02 , C01F11/46 , C02F1/04 , C02F1/58 , C02F11/06 , C02F11/12 , F23G5/30 , F23G7/00 , F23G7/04 , C02B1/20
摘要： Disclosed is a method whereby a waste water containing ammonium ions, sulfate ions and organic substances is subjected to combustive disposal subsequent to addition of calcium hydroxide or calcium oxide thereto.
摘要翻译： 公开了一种方法，其中在向其中加入氢氧化钙或氧化钙之后，含有铵离子，硫酸根离子和有机物质的废水进行可燃处理。
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公开(公告)号：US4035293A
公开(公告)日：1977-07-12
申请号：US596708
申请日：1975-07-17
CPC分类号： C01B25/322 , C02F1/025 , C02F1/5236
摘要： Disclosed is a process for purifying an effluent containing acids such as phosphonic and phosphoric acids by the addition of CaO or Ca(OH).sub.2 in an amount ranging from 55-93 per cent by weight basis acids at a temperature of 35.degree. to 100.degree. C to a pH of 8 to 12. After removing the precipitated material, the effluent can be neutralized with CO.sub.2 gas. The precipitate can be calcined to tri calcium phosphate.
摘要翻译： 公开了一种通过在35〜100℃的温度下添加量为55-93重量％的CaO或Ca（OH）2来纯化含有酸如膦酸和磷酸的流出物的方法。 C至pH为8至12.在除去沉淀的材料后，流出物可用CO 2气体中和。 可以将沉淀物煅烧成三磷酸钙。
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公开(公告)号：US4035259A
公开(公告)日：1977-07-12
申请号：US626846
申请日：1975-10-29
申请人： Liborio Casale
发明人： Liborio Casale
CPC分类号： C02F1/5236
摘要： The invention relates to an inorganic flocculating composition consisting of water soluble salts of Al, Fe, Mg and Ca and obtained by attacking clays containing the above chemical elements, the attack being carried out with an acid capable of forming water soluble salts of the said chemical elements. The said composition is capable of destroying the stability of colloidal slurries and can be employed without involving strict conditions, such as pH, temperature and so on.
摘要翻译： 本发明涉及由Al，Fe，Mg和Ca的水溶性盐组成的无机絮凝组合物，其通过攻击含有上述化学元素的粘土而获得，该攻击是用能够形成所述化学物质的水溶性盐的酸进行的 元素。 所述组合物能够破坏胶体浆料的稳定性，并且可以在不涉及严格条件如pH，温度等的情况下使用。
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公开(公告)号：US4013555A
公开(公告)日：1977-03-22
申请号：US669931
申请日：1976-03-24
申请人： William R. Davis
发明人： William R. Davis
CPC分类号： C02F1/66 , C02F1/5236 , C02F1/54
摘要： A process for reducing BOD in aqueous food processing plant wastes which comprises subjecting such wastes to the following series of sequential steps:A. adjusting the pH of the waste to 3 or less to form finely divided suspended particles;B. readjusting the pH of the waste with sodium aluminate to a value within the range of 6-7.5;C. flocculating the particles with an anionic acrylamide polymer; and thenD. removing and collecting the flocculated particles from the food processing plant wastes.
摘要翻译： 一种用于减少含水食品加工厂废物中的BOD的方法，其包括对这些废物进行以下一系列顺序步骤：
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公开(公告)号：US3960723A
公开(公告)日：1976-06-01
申请号：US317919
申请日：1972-12-26
申请人： James W. Butler
发明人： James W. Butler
CPC分类号： C02F1/705 , C02F1/488 , C02F2101/20 , C02F2101/22 , Y10S210/912
摘要： The present invention relates to a process for treating aqueous waste solutions containing complexing or oxidizing agents and dissolved metallic elements or compounds of copper, chromium, nickel, lead or tin. The waste solution is treated with finely divided magnetized ferrous particles, continuing such treatment to allow for homogeneous stirring promoting substantial ion exchange between the solute and ferrous particles, and providing a post-treatment step using an agent to promote precipitation of metallic hydroxides. The precipitates are separated from the solution by deposition in a settling tank and/or filtration.
摘要翻译： 本发明涉及一种处理含有络合或氧化剂和溶解的铜，铬，镍，铅或锡的金属元素或化合物的废水的处理方法。 用细碎的铁化亚铁颗粒处理废液，继续进行这种处理以允许均匀搅拌促进溶质和亚铁颗粒之间的大量离子交换，并提供使用试剂促进金属氢氧化物析出的后处理步骤。 通过沉积在沉淀池中和/或过滤将沉淀物与溶液分离。
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公开(公告)号：US3947354A
公开(公告)日：1976-03-30
申请号：US569431
申请日：1975-04-18
CPC分类号： C02F1/5272 , C02F1/54 , Y10S210/912
摘要： Concentrations of undesirable heavy metals in industrial wastewater are reduced to below or very close to the most stringent aqueous discharge limits. This is accomplished by forming an insoluble metal-polyelectrolyte complex which can be easily and economically removed from the effluent.
摘要翻译： 工业废水中不需要的重金属的浓度降低到非常接近最严格的水排放极限。 这是通过形成不容易的金属 - 聚电解质络合物来实现的，该络合物可以容易且经济地从流出物中除去。
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公开(公告)号：US3933642A
公开(公告)日：1976-01-20
申请号：US451862
申请日：1974-03-18
申请人： George E. Wilson
发明人： George E. Wilson
CPC分类号： C02F1/5281
摘要： Flocculation is carried out by mixing a coagulant, such as alum, with the fluid to be treated, such as water, and introducing the resultant mixture into the upstream end of a conductor. In a preferred form, the conductor comprises a series of discrete pipe sections, each downstream section having a progressively larger diameter and length with diverging transition members connecting adjacent sections. The sizes of the sections and the transition members are carefully predetermined, as is the radius of curvature of the coil, in the event the pipe is wound, so as to afford a velocity gradient and flow condition throughout the length of the pipe yielding optimum results.Modified forms of continuous decayed velocity gradient systems are also disclosed. One form uses a coiled pipe wherein the pipe diameter is constant and the coil radius of curvature progressively increases. Another form utilizes staged compartments, each upstream compartment feeding each adjacent downstream compartment across progressively decreasing differential heads.
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公开(公告)号：US3933634A
公开(公告)日：1976-01-20
申请号：US279267
申请日：1972-08-09
申请人： Toru Seki
发明人： Toru Seki
CPC分类号： C02F11/123 , B01D33/04 , C02F1/52 , C02F1/5236
摘要： A process for concentrating and separating solids from solid/liquid mixtures in the treatment of sewage sludge, which comprises incorporating into such sludge 2 to 10 % by weight of fine dust coal or lignite having such a size distribution that 30 to 50 % by weight of the whole particles have a finer size not greater than 100 mesh and 70 to 50 % by weight of the whole particles have a coarser size exceeding 100 mesh, mixing them under agitation, allowing the resulting admixture to stand still to separate the coal-containing concentrated sludge from the supernatant liquor, and if desired, filtering the coal-containing concentrated sludge to remove water therefrom; and a continuous dehydration apparatus which is used effectively for practice of said process.
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