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公开(公告)号：US4224149A
公开(公告)日：1980-09-23
申请号：US34118
申请日：1979-04-30
CPC分类号： C02F1/52 , C02F1/54 , C02F5/10 , Y10S210/907
摘要： Use of an effective amount of a precipitant or sequestrant for calcium ions improves performance of anionic polymeric carboxylic acid flocculants in flocculating phosphate slimes.
摘要翻译： 使用有效量的沉淀剂或螯合剂用于钙离子改善了絮凝磷酸盐泥浆中阴离子聚合物羧酸絮凝剂的性能。
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公开(公告)号：US4217214A
公开(公告)日：1980-08-12
申请号：US949932
申请日：1978-10-10
申请人： Paul L. Dubin
发明人： Paul L. Dubin
CPC分类号： C02F1/54 , C02F1/5236
摘要： High molecular weight polyvinylamine hydrochloride for use as a flocculating agent in waste water systems is disclosed.
摘要翻译： 公开了用作废水系统中的絮凝剂的高分子量聚乙烯胺盐酸盐。
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公开(公告)号：US4211652A
公开(公告)日：1980-07-08
申请号：US936064
申请日：1978-08-23
申请人： Robert C. Thomas
发明人： Robert C. Thomas
CPC分类号： B03D1/1431 , B03D1/02 , B03D1/028 , C02F1/24 , C02F9/00
摘要： Dirty process water collected from a process unit is held in a raw water holding tank. Air and process chemicals enter the system in this tank. Water from the tank passes at a uniform rate through a flotation cell where solids are frothed by flocculation and aeration and removed. Makeup water saturated with air and at a lower temperature than the process water liberates air in the cell as part of the aeration. Air dissolved in the tank provides further aeration in the cell. Water from the cell is held in a treated water holding tank and uniformly withdrawn from the tank to a filter for the removal of more solids. Filtered water is stored in a filtered water storage vessel for use in the process facility. Heat exchange keeps the filtered water at required temperature. Water discharged from the system to a sanitary sewer may have various degrees of purity.
摘要翻译： 从处理单元收集的脏的加工水被保持在原水储存罐中。 空气和过程化学品进入该罐中的系统。 来自罐的水通过浮选槽以均匀的速率通过，其中固体通过絮凝和通气而被除去。 饱和空气和温度低于工艺水的补充水在曝气中释放细胞中的空气。 溶解在罐中的空气在电池中进一步曝气。 将来自电池的水保持在经处理的储水罐中，并从罐中均匀地排出到过滤器以除去更多的固体。 过滤后的水储存在过滤的储水容器中，用于工艺设备。 热交换将过滤的水保持在所需温度。 从系统排放到卫生下水道的水可能具有不同程度的纯度。
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公开(公告)号：US4206052A
公开(公告)日：1980-06-03
申请号：US868801
申请日：1978-01-12
申请人： Mikkel G. Mandt
发明人： Mikkel G. Mandt
CPC分类号： C02F1/5236 , C02F1/52
摘要： Systems for flocculation processing in water purification treatment in which a first jet flash mixing field of relatively high specific energy requirement and turbulence intensity is provided for intimate mixture of the flocculant and influent water to produce a thoroughly mixed product stream having residual energy, and in which the product stream from the first mixing field is used as the motive stream to power a flocculation field of lower specific energy requirement and turbulence intensity.
摘要翻译： 用于水净化处理中的絮凝处理系统，其中提供相对较高比能量需求和湍流强度的第一喷射闪蒸混合场用于絮凝剂和流入水的紧密混合，以产生具有剩余能量的充分混合的产物流，其中 来自第一混合场的产物流被用作为较低比能量需求和湍流强度的絮凝场的动力流。
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公开(公告)号：US4200528A
公开(公告)日：1980-04-29
申请号：US968938
申请日：1978-12-13
CPC分类号： C02F1/281 , C22B3/24 , Y02P10/234 , Y10S210/912 , Y10S210/913
摘要： Amorphous, hydrated magnesium silicate is effective in reducing the concentration of various metal ions in aqueous solutions or effluent streams. Both mono- and multi-valent ions can be treated in this manner thereby providing a method of preventing release of metal ions to the environment. The method is especially efficient in removal of chrome values from effluents generated in chrome tanning operations. Efficient adsorption of the chrome requires that the pH of the effluent-magnesium silicate slurry be adjusted to or maintained at a value between 5.3 and 9.8. The chrome value may be recovered from the magnesium silicate by acidification of the complex.
摘要翻译： 无定形水合硅酸镁有效降低水溶液或流出物流中各种金属离子的浓度。 可以以这种方式处理单价和多价离子，从而提供一种防止金属离子释放到环境中的方法。 该方法特别有效地从铬鞣制作用中产生的流出物中除去铬值。 铬的有效吸附需要将流出物 - 硅酸镁浆料的pH调节至或维持在5.3至9.8之间的值。 可以通过络合物的酸化从硅酸镁中回收铬值。
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公开(公告)号：US4196077A
公开(公告)日：1980-04-01
申请号：US633378
申请日：1975-11-19
CPC分类号： C02F11/002
摘要： Substantial dewatering of a secondary sewage sludge stream is obtained by admixing same with various hydrocarbon oils, the initial sludge/oil weight ratio being maintained in an amount less than 0.6, at shear rates of at least 130 seconds.sup.-1, and allowing the mixture thus formed to settle at temperatures of at least 72.degree. F. Substantially complete disposal of the solids thus removed from the secondary sludge stream can be achieved by subjecting same to evaporation and incineration processes.
摘要翻译： 通过将其与各种烃油混合，初始污泥/油重量比在至少130秒-1的剪切速率下保持小于0.6的初始污泥/油重量比获得二次污水污泥流的大量脱水，并且允许混合物 形成为在至少72°F的温度下沉降。通过对其进行蒸发和焚烧处理，可以实现对从第二污泥流中除去的固体的基本完全处理。
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公开(公告)号：US4191645A
公开(公告)日：1980-03-04
申请号：US860809
申请日：1977-12-15
CPC分类号： C02F1/54
摘要： Use of a cationic copolymer prepared by incremental addition of a cationic monomer during the polymerization reaction of a nonionic monomer in the dewatering of sewage sludges provides improved performance characteristics.
摘要翻译： 在非离子单体在污水污泥脱水中的聚合反应期间通过增加阳离子单体制备的阳离子共聚物的使用提供了改进的性能特征。
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公开(公告)号：US4186088A
公开(公告)日：1980-01-29
申请号：US876870
申请日：1978-02-13
CPC分类号： C02F9/00 , C02F1/72 , C02F2101/20
摘要： An aqueous ferrous sulfate waste stream is converted into sludge and improved water effluent by a preferably ambient indoor temperature and pressure flow process comprising: turbulently mixing said stream with a substantial excess of gaseous oxygen and a small excess of impalpable calcium carbonate in a reaction zone until the iron content of said stream is virtually all sludged; classifying resulting sludge into a coarser solids fraction (a portion of which is recycled to the sludging operation) and an aqueous suspension of finer solids; and separating finer solids from such aqueous suspension. As such streams usually contain free sulfuric acid, it is desirable to first precipitate from the stream a primary gypsum product by neutralization prior to such sludging operation.
摘要翻译： 通过优选环境室内温度和压力流动方法将硫酸亚铁废水流转化成污泥和改进的水流出物，其包括：在反应区中将所述料流与基本过量的气态氧和少量过量的不可渗透的碳酸钙湍流混合直到 所述流的铁含量几乎全部被排除; 将得到的污泥分类成较粗的固体馏分（其一部分再循环至淤泥操作）和较细固体的水悬浮液; 并从这种水性悬浮液中分离更细的固体。 因为这些料流通常含有游离硫酸，因此在这样的淤渣操作之前，首先通过中和从料流中沉淀初级石膏产品。
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公开(公告)号：US4147625A
公开(公告)日：1979-04-03
申请号：US900210
申请日：1978-04-26
申请人： John R. Dodd
发明人： John R. Dodd
CPC分类号： C07C37/86
摘要： Trimethylhydroquinone (TMHQ) which is discolored in organic solution because of air oxidation can be made nearly colorless by addition of small amounts of alkali metal borohydride to the discolored solution. Products remaining in the TMHQ solution after discoloration removal can be extracted by water wash. This technique represents a very simple and efficient method for removing discoloration which has proved troublesome in the prior art.
摘要翻译： 由于空气氧化而在有机溶液中变色的三甲基氢醌（TMHQ）可以通过向变色溶液中加入少量碱金属硼氢化物而变得几乎无色。 脱色后残留在TMHQ溶液中的产品可以通过水洗提取。 该技术代表了一种非常简单和有效的消除变色的方法，这已经证明在现有技术中是麻烦的。
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公开(公告)号：US4145282A
公开(公告)日：1979-03-20
申请号：US761685
申请日：1977-01-24
申请人： Stanley Bruckenstein
发明人： Stanley Bruckenstein
CPC分类号： C02F1/583 , C02F1/5236 , C02F1/5245 , C02F1/66 , C02F2101/14 , C02F2209/06 , Y10S210/915
摘要： A process for purifying waste water containing fluoride which comprises precipitating fluoride from the waste water as fluorapatite. Fluoride is removed as fluorapatite by having sufficient available calcium for each mole of fluoride present in the waste water and sufficient available phosphate for each mole of fluoride in the waste water to form a precipitate which is or converts to sufficient fluorapatite to remove essentially all fluoride from the waste water.
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