公开(公告)号：US5217615A

公开(公告)日：1993-06-08

申请号：US659723

申请日：1991-02-25

Applicant: Rajeshwar D. Tyagi ,  Devender K. Jain ,  Denis Couillard

Inventor： Rajeshwar D. Tyagi ,  Devender K. Jain ,  Denis Couillard

IPC: C02F3/34 ,  C02F11/00 ,  C22B3/18

CPC classification number: C02F3/345 ,  C02F11/004 ,  C22B3/18 ,  Y02P10/234 ,  Y10S210/912 ,  Y10S435/832

Abstract: The present invention relates to a process for removing heavy metals and substantially destroying indicator bacteria present in municipal sludges, which comprises: lowering, under aerobic conditions, the pH of a municipal sludge from about 7 to 8 to about 2.0 to 2.5 by adding to said sludge 10% by volume of an inoculum containing a mixture of microorganisms comprising Thiobacillus thiooxidans ATCC 55127 and Thiobacillus thioparus ATCC 55128 with 1 to 3 g per liter of sulphur, and incubating for a period of at least 40 hours where the heavy metals originally present in said sludge have been substantially solubilized and the concentration of the indicator bacteria have been lowered to a non-toxic level; and recovering the metals from the low pH treated sludge of step a).

Abstract translation: 本发明涉及一种去除重金属并显着破坏城市污泥中存在的指示菌的方法，其包括：在需氧条件下，将市政污泥的pH从约7至约2.0至约2.0至2.5降低至所述 将含有含有硫氧化硫杆菌ATCC 55127和硫杆菌硫杆菌ATCC 55128的微生物混合物的接种物的10体积％与1至3克/升的硫混合，并将至少40小时的温度孵育至最初存在的重金属 所述污泥已基本溶解，指示剂细菌的浓度降低至无毒水平; 并从步骤a）的低pH处理污泥中回收金属。

公开(公告)号：US5211724A

公开(公告)日：1993-05-18

申请号：US685339

申请日：1991-04-15

Applicant: Motasimur R. Khan ,  Ronald J. McKeon

Inventor： Motasimur R. Khan ,  Ronald J. McKeon

IPC: C02F11/06 ,  C01B3/36 ,  C02F1/04 ,  C02F1/38 ,  C02F11/00 ,  C02F11/10 ,  C02F11/12 ,  C10J3/46 ,  C10L1/32 ,  C10L5/46 ,  C10L7/00

CPC classification number: C02F11/123 ,  C01B3/36 ,  C02F1/048 ,  C02F11/10 ,  C10J3/466 ,  C10J3/86 ,  C10K1/101 ,  C10L5/46 ,  C10J2300/0926 ,  C10J2300/0996 ,  C10J2300/1223 ,  C10J2300/1606 ,  C10J2300/165 ,  C10J2300/1656 ,  C10J2300/1671 ,  C10J2300/1846 ,  Y02E50/10 ,  Y02E50/30 ,  Y02P20/145 ,  Y02W10/40 ,  Y10S48/07

Abstract: An improved process for the low-cost disposal of noxious sewage sludge in a safe way without polluting the environment. In the process, sewage sludge having a solids content of about 0.5 to 20 wt.% is concentrated by pressing in a belt filter press, optionally followed by pressing in a high intensity press. It was unexpectedly found that the morphology of the resulting dewatered sewage sludge is changed by such mechanical treatment so that slurries with higher concentrations of solids are achieved. The dewatered sewage sludge is heated, flash evaporated and/or centrifuged, and mixed with a supplemental fuel e.g., liquid hydrocarbonaceous and/or solid carbonaceous fuel to produce a pumpable fuel slurry having a total solids content in the range of about 50 to 70 wt.% and comprising about 10 to 40 wt.% dewatered sewage sludge and having a higher heating value in the range of about 5,000 to 14,000 BTU/Lb. The fuel slurry may be reacted by partial oxidation in a conventional gasifier to produce synthesis gas and/or fuel gas. The thermal energy in hot byproduct steam and flue gas streams are used to heat the dewatered sewage sludge. In one embodiment, the pumpable slurry of dewatered sewage sludge and supplemental fuel is burned by complete combustion in a furnace or incinerator for the production of steam.

Abstract translation: 以安全的方式低成本处置有害污水污泥而不污染环境的改进措施。 在此过程中，固体含量约为0.5-20重量％的污水污泥通过在带式压滤机中压制而浓缩，任选地在高强度压榨机中压制。 意外地发现，通过这种机械处理改变得到的脱水污水污泥的形态，从而实现具有较高浓度固体的浆料。 脱水的污水污泥被加热，闪蒸和/或离心，并与补充燃料例如液体含烃和/或固体碳质燃料混合以产生总固含量在约50-70重量％范围内的可泵送燃料浆料 ％，并且包含约10至40重量％的脱水污水污泥，并且具有在约5,000至14,000BTU / Lb范围内的较高热值。 燃料浆料可以在常规气化器中通过部分氧化反应以产生合成气和/或燃料气体。 热副产物蒸汽和烟气流中的热能用于加热脱水污水污泥。 在一个实施方案中，脱水污水污泥和补充燃料的可泵送浆料通过在用于生产蒸汽的炉子或焚化炉中完全燃烧而燃烧。

公开(公告)号：US5205910A

公开(公告)日：1993-04-27

申请号：US752120

申请日：1991-08-29

Applicant: Tommaso Arbizzani ,  Gualtiero Ghelardini

Inventor： Tommaso Arbizzani ,  Gualtiero Ghelardini

IPC: C02F11/00 ,  C02F11/12 ,  D06F43/08 ,  F26B17/20

CPC classification number: D06F43/081 ,  Y10S203/11 ,  Y10S203/90

Abstract: Distillation chamber for extracting solvent from sludge, in particular for dry-cleaning machines, having a bottom shaped like a half-cylinder with a horizontal axis. The bottom is provided, in a downward position, at one end, with an outlet for extracting dried sludge. A shaft is axially and rotatably mounted in the chamber and spatula-like sectors, suitable for stirring the sludge and for pushing it toward the outlet upon the rotation of the shaft, are fixed to the shaft itself.

公开(公告)号：US5190649A

公开(公告)日：1993-03-02

申请号：US366808

申请日：1989-06-14

Applicant: Antonio M. Celi

Inventor： Antonio M. Celi

IPC: B01D11/02 ,  B09C1/02 ,  C02F11/00 ,  C05F7/00

CPC classification number: C02F11/004 ,  B01D11/02 ,  B09C1/02 ,  C05F7/00

Abstract: The invention relates to a method of removing metals from metal-charged waste sludges from industry, clarification plants, or the like, in which the sludges are treated with a solvent for the metals, the resulting solution is separated from the undissolved substances and worked up to yield the metals, and the remaining solids are dumped as safe waste materials or used as fertilizers. The invention also relates to an apparatus for carrying out this working-up method, characterized by a mixing apparatus for mixing the solvent and the sludge which is to be treated, a residence zone, an adjoining apparatus for separating the metal-charged solvent from the insoluble fraction, and optionally an apparatus for drying the insoluble fraction. Metal sludges can be continuously worked up, if desired, in the apparatus according to the invention.

Abstract translation: 本发明涉及一种从工业，澄清植物等中的金属填充废渣除去金属的方法，其中用金属溶剂处理污泥，将所得溶液与未溶解的物质分离并处理 以产生金属，并且剩余的固体作为安全的废物倾倒或用作肥料。 本发明还涉及一种用于实施这种处理方法的装置，其特征在于：用于混合溶剂和待处理污泥的混合装置，停留区，用于从金属加入的溶剂中分离出带电荷的溶剂的邻接装置 不溶性级分，以及任选的用于干燥不溶性级分的装置。 如果需要，可以在根据本发明的装置中连续地处理金属污泥。

公开(公告)号：US5161915A

公开(公告)日：1992-11-10

申请号：US674864

申请日：1991-03-25

Applicant: David L. Hansen

Inventor： David L. Hansen

IPC: B09B1/00 ,  B09B3/00 ,  C02F11/00 ,  C04B22/00 ,  C04B28/04 ,  C09K8/46

CPC classification number: B09B3/0041 ,  B09B1/004 ,  C02F11/008 ,  C04B22/002 ,  C04B28/04 ,  C09K8/46 ,  Y02W30/32 ,  Y02W30/78 ,  Y02W30/92 ,  Y02W30/95 ,  Y02W30/97

Abstract: A synthetic cover for waste piles may be formed from a mixture of liquid, binder, cellulose fibers and plastic fibers. These constituents may be mixed and applied to cover a waste pile. The cover will harden to minimize odor and affinity to birds, flies and other insects. The liquid may include water; the binder may include cement kiln dust with or without bentonite, or portland cement with flyash or stone dust. The cellulose fibers may comprise shredded paper or wood.

Abstract translation: 垃圾堆的合成盖可以由液体，粘合剂，纤维素纤维和塑料纤维的混合物形成。 这些成分可以混合并应用于覆盖废料堆。 盖子会硬化，以减少对鸟类，苍蝇和其他昆虫的气味和亲和力。 液体可包括水; 粘合剂可以包括具有或不具有膨润土的水泥窑灰，或具有飞灰或石灰尘的波特兰水泥。 纤维素纤维可以包括切碎的纸或木材。

公开(公告)号：US5160636A

公开(公告)日：1992-11-03

申请号：US822424

申请日：1992-01-17

Applicant: Greg Gilles ,  Matt Husain

Inventor： Greg Gilles ,  Matt Husain

IPC: B09C1/02 ,  C02F1/04 ,  C02F1/26 ,  C02F11/00 ,  G21F9/06 ,  G21F9/08 ,  G21F9/12

CPC classification number: G21F9/08 ,  B09C1/02 ,  C02F1/048 ,  C02F1/26 ,  C02F11/004 ,  G21F9/06 ,  G21F9/125 ,  C02F2101/006

Abstract: A process is presented for treating and detoxifying mixed wastes, especially those containing volatile chemically oxidizable organics, nonvolatile inorganics and radioactive pollutants. The process combines an efficient extraction system, a filtration step, and evaporation system to concentrate the pollutants originally present in the mixed waste and a catalytic oxidation reaction to convert the volatilized organic and inorganic pollutants. A condensate product is obtained that is recycled internally to provide a closed system that discharges only inert gases and treated solid products.

Abstract translation: 提出了一种处理和排毒混合废物的方法，特别是含有挥发性化学可氧化有机物，非挥发性无机物和放射性污染物的废物。 该方法结合了有效的萃取系统，过滤步骤和蒸发系统，以浓缩原来存在于混合废物中的污染物和催化氧化反应，以转化挥发的有机和无机污染物。 获得的冷凝产品在内部被回收以提供仅排出惰性气体和经处理的固体产物的封闭系统。

公开(公告)号：USRE34041E

公开(公告)日：1992-08-25

申请号：US598908

申请日：1990-10-16

Applicant: Darryl J. Doan

Inventor： Darryl J. Doan

IPC: C02F11/00 ,  C04B28/00 ,  G21F9/12 ,  G21F9/16

CPC classification number: G21F9/162 ,  C02F11/008 ,  C04B28/001 ,  G21F9/12 ,  C04B2111/00767 ,  Y02W30/91

Abstract: An improved method of disposing of radioactive or hazardous liquid aqueous waste compositions having a substantial amount of dissolved solids comprises mixing the liquid under a high mechanical shear with a clay selected from the group consisting of attapulgite, sepiolite, and mixtures thereof. Water soluble or miscible organic liquids as well as liquid hydrocarbon mixtures thereof may also be solidified by utilizing the aforesaid clays together with an organic ammonium montmorillonite having at least 10 carbon atoms, the amount of montmorillonite used being proportional to the amount of liquid hydrocarbon present.

公开(公告)号：US5114275A

公开(公告)日：1992-05-19

申请号：US662388

申请日：1991-02-26

Applicant: Philip W. West ,  William H. Daly

Inventor： Philip W. West ,  William H. Daly

IPC: B09B1/00 ,  C02F11/00 ,  C04B28/00 ,  C04B28/02 ,  E02D31/00

CPC classification number: E02D31/00 ,  B09B1/00 ,  C02F11/008 ,  C04B28/001 ,  C04B28/02 ,  C04B2103/0052 ,  C04B2111/00775 ,  Y10S106/90

Abstract: A process for improved hydrophobic waste storage is described wherein a latex comprising a preformed, high molecular weight polymer having a high affinity for hydrophobic liquids, is sprayed on the waste prior to admixing an inorganic matrix material. Alternately, a liner for use in a waste pit which is to contain hydrophobic waste liquids or concentrated aqueous salt solutions is produced in situ by blending and compacting a latex comprising a hydrophobic polymer and clay onto the surface of the waste pit.

Abstract translation: 描述了一种用于改进疏水性废物储存的方法，其中包含预先形成的对疏水性液体具有高亲和性的高分子量聚合物的胶乳在混合无机基质材料之前喷洒在废物上。 或者，通过将包含疏水性聚合物和粘土的胶乳混合并压实到废物坑的表面上，原位生产用于包含疏水性废液或浓缩盐水溶液的废物坑中的衬垫。

公开(公告)号：US5102556A

公开(公告)日：1992-04-07

申请号：US502287

申请日：1990-03-30

Applicant: Morton M. Wong

Inventor： Morton M. Wong

IPC: C02F1/70 ,  C02F9/00 ,  C02F11/00

CPC classification number: C02F9/00 ,  C02F1/705 ,  C02F11/004 ,  C02F2101/20 ,  Y10S210/912

Abstract: A method is provided for selectively treating flocculated heavy metal contaminated iron-based sludges from an industrial waste water treatment process. The method removes the heavy metal contaminants with a minimum loss of the iron therein. The method comprises dissolving the sludge in hydrochloric acid to produce a ferric chloride solution. The solution is filtered to remove precipitated heavy metal salts, such as lead chloride. The filtrate containing the remaining heavy metal chlorides and ferric chloride is then cooled or otherwise treated to remove additional heavy metal chlorides. The remaining ferric chloride based solution is then reduced (exposed to iron powder) to a ferrous chloride solution and heavy metals. After filtration of any additional precipitated heavy metals, the ferrous chloride solution is ready for recycling. The precipitated/filtered heavy metal salts can be supplied to one or more conventional recovery processes to produce one or more heavy metals, instead of disposing of them as hazardous waste.

Abstract translation: 提供了一种从工业废水处理过程中选择性处理絮凝的重金属污染的铁基污泥的方法。 该方法以最小的铁损失去除重金属污染物。 该方法包括将污泥溶解在盐酸中以产生氯化铁溶液。 过滤溶液以除去沉淀的重金属盐，如氯化铅。 然后将含有剩余的重金属氯化物和氯化铁的滤液冷却或以其他方式处理以除去另外的重金属氯化物。 然后将剩余的氯化铁溶液还原（暴露于铁粉）至氯化亚铁溶液和重金属。 在过滤任何另外沉淀的重金属后，氯化亚铁溶液就可以循环使用了。 沉淀/过滤的重金属盐可以提供给一种或多种常规回收方法以产生一种或多种重金属，而不是将它们作为危险废物处理。

公开(公告)号：US5028338A

公开(公告)日：1991-07-02

申请号：US521397

申请日：1990-05-10

Applicant: Carel W. J. Hooykaas

Inventor： Carel W. J. Hooykaas

IPC: B01J20/12 ,  B09B20060101 ,  B09B3/00 ,  C02F11/00 ,  C04B18/18 ,  C04B20/10

CPC classification number: C04B20/1022 ,  B01J20/12 ,  B09B3/00 ,  C02F11/008 ,  C04B18/18 ,  C04B2111/00017 ,  C04B2111/00784 ,  Y02W30/96 ,  Y10S210/908 ,  Y10S210/909

Abstract: A process is disclosed for immobilizing environmentally noxious organic, particularly aromatic, substances by absorbing them on a layered clay mineral modified by exchange with a quaternary ammonium compound, thereby increasing the spacing between the layers and rendering the adsorption surfaces hydrophobic.After adsorption of the organic compounds the spacing between the layers of the layered clay mineral is reduced by a layer spacing reducing agent, and subsequently the clay mineral containing the organic compounds is mixed with a hardenable inorganic binder and the whole is hardened.A typical example of a modifying agent is a quanternary ammonium compound, and of a layer spacing reducing agent an alkaline substance, such as sodium hydroxide.Typical clay minerals are chosen among the smectite minerals, tectosilicates and phyllosilicates; preferably montmorillonite clay is used.The inorganic binder may be a calcium hydroxide compound or a calcium containing cement, preferably containing fly ash.