المنتجات الساخنة
Efficient continuous electrokinetic dewatering of phosphatic
网页2019年3月1日 The phosphate deposits consist of phosphate ore, clay, and sand in approximately equal proportions [2]. The beneficiation of phosphate ore is achieved by froth flotation. The phosphate is converted to phosphoric acid for subsequent use as an
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Phosphates in Sewage and Sludge Treatment. IV. Effect
网页FeCl3 to obtain optimum dewatering time. The optimum amount of ferric chloride required was approximately 1.7 per cent Fe on a dry matter basis. The optimum dewatering time
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Electrokinetic dewatering of a phosphate clay ScienceDirect
网页1997年8月1日 Previous investigation An investigation of electrical dewatering of the phosphate clays was conducted by the US Bureau of Mines in 1964 (Stanczyk and Feld,
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Full scale optimisation of sludge dewatering and phosphate removal
网页2018年3月1日 At Harnaschpolder wwtp phosphate removal from wastewater and sludge dewatering is optimised by dosing magnesium hydroxide to digested sludge. To optimise
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Electrokinetic dewatering of a phosphate clay ScienceDirect
网页1997年8月1日 Electrokinetic dewatering of a phosphate clay was investigated in an experimental program. The results show that the velocity of sedimentation is controlled
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Effect of dewatering conditioners on phosphorus removal
网页The phosphorus adsorption mechanism of the dewatering sludge biochar was analysed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Fourier
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Conditioning and Dewatering of Phosphorus-Rich Biological Sludge
网页2007年2月6日 The conditioning and dewatering of phosphorus-rich biological sludge, obtained from a pilot-scale biological phosphorus removal plant, was investigated. Dual
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[19) [II] [4S] [54] MEmOD FOR DEWATERING
网页2004年2月4日 A method for dewatering phosphate slimes and recov-ering a liquid solution involves adding a calcium sulfate hemihydrate to the slimes, mixing the resulting admix
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Chemical Conditioning for Removal of Water and Phosphate
网页The chemical conditioning required to improve water removal from waste activated sludge and phosphorus from the filtrate was examined in this study. The sludge, collected from a
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STATE-OF-THE-ART OF PHOSPHATIC CLAY DEWATERING
网页2014年12月2日 DEWATERING TECHNOLOGY AND DISPOSAL TECHNIQUES (In Two Parts) 1. A Review of Phosphatic Clay Dewatering Research By Walter E. Pittman, 1 and
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Phosphates in Sewage and Sludge Treatment. IV. Effect
网页FeCl3 to obtain optimum dewatering time. The optimum amount of ferric chloride required was approximately 1.7 per cent Fe on a dry matter basis. The optimum dewatering time varied from 1.1 to 1.3 minutes. The phos phorus compounds used were phos phoric acid, H3PO4; monocalcium phosphate, Ca(H2P04)2,H20; diam monium phosphate (NH4)2
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Electrokinetic dewatering of a phosphate clay ScienceDirect
网页1997年8月1日 Electrokinetic dewatering of a phosphate clay was investigated in an experimental program. The results show that the velocity of sedimentation is controlled by the applied current density and that electro-osmotic permeability dominates the effectiveness of electrokinetic consolidation. The intermittent current and polarity reversal can
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Process for dewatering and utilization of mining wastes
网页2004年2月1日 FIPR/DIPR process: a rapid phosphate clay dewatering scheme; H. El-Shall et al. Dewatering of phosphatic clays––role of polymer flocculation; View more references. Cited by (11) De-sliming followed by froth flotation for the recovery of phosphorus and enrichment of rare earth elements from Florida waste clay.
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(PDF) Heavy metal contamination and health risk
网页2018年10月1日 Heavy metal contamination and health risk assessment in waste mine water dewatering using phosphate beneficiation processes in Jordan October 2018 Environmental Earth Sciences 77(19):1-14
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New Techniques in Beneficiation of the Florida Phosphates
网页Despite recent economic problems, the future of the Florida phosphate industry appears optimistic. Florida has enormous reserves and will continue to produce a third of the world’s phosphate supply simply by making changes in the present system of mining, beneficiation, waste disposal, and land reclamation. The geology and mineralogy of future deposits are
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Treatment of phosphate slimes HARDMAN; GILBERT J.
网页A process of dewatering phosphate slimes comprising providing as a phosphate slime a mixture of hydrophilic clay, phosphate salt and at least about 95 percent water; disposing a first time unit's production of such slime in a given unit area to a depth of about 12 to 24 inches exposing such slime in such areas to air at a relative humidity of less than 100
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Dewatering performance of sludge using coconut shell
网页2021年7月3日 During the dewatering process, the removal of heavy metal (cadmium, chromium, lead, and nickel) and phosphate (50.6%) was evident. Hence attempt of coconut shell biochar modified with ferric chloride as a skeleton material is an economical and promising option for sludge dewatering.
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Enzymatic dewatering of Florida phosphate slimes
网页The effects of the enzyme, peroxidase, on the sedimentation and consolidation characteristics of Florida phosphate slimes were investigated. Results indicate that pretreatment with the enzyme was beneficial for slime dewatering and consolidation. Biological activity, resulting from slime pretreatment with the enzyme, induced higher
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WO2013055279A1 Dewatering of phosphate precipitates
网页The present invention describes a process for the treatment of a precipitate starting material comprising magnesium ammonium phosphate, magnesium potassium phosphate or potassium phosphate, or any derivate thereof, or a mixture thereof, said process comprising dewatering of the precipitate starting material, wherein the dewatering is performed by
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Dewatering And Phosphorus Removal In
网页Phosphorus removal using lanthanides, cerium and lanthanum, remove phosphorus by forming a precipitate mineral with the phosphate that is very dense. This mineral precipitates quickly and easily, without forming a floc
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Heavy metal contamination and health risk
网页2018年9月24日 Heavy metal contamination and health risk assessment in waste mine water dewatering using phosphate beneficiation processes in Jordan September 2018 Environmental Earth Sciences 77(19):661
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Chemical Engineering at the University of Florida
网页2012年9月11日 The Florida Institute of Phosphate Research (FIPR) supported bench- and pilot-scale studies to determine the technical and economic feasibility of a variety of processes to rapidly dewater the clay associated with phosphate mining: freeze-thaw technique, flocculation with a polymer, in-line sand-clay mixing, dredge-mix process,
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The benefits of dewatering tailings ScienceDirect
网页2020年2月1日 Mike Swintak, regional senior product manager for Weir Minerals, says: “Dewatering tailings can be a difficult process, however when undertaken successfully, it can deliver significant benefits to mine operators.”. The most important benefit of dewatering tailings is the reduction of water that needs to be transported from a process plant
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CN101702433A Method for preparing battery-grade lithium dihydrogen
网页The invention discloses a method for preparing battery-grade lithium dihydrogen phosphate, characterized by comprising the technological steps: (1) purifying industrial lithium hydroxide monohydrate; (2) acid-base neutralization reaction; (3) spray-drying products; and (4) deeply dewatering the products to obtain the products of battery-grade lithium dihydrogen
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Conditioning and Dewatering of Phosphorus-Rich Biological Sludge
网页2007年2月6日 The conditioning and dewatering of phosphorus-rich biological sludge, obtained from a pilot-scale biological phosphorus removal plant, was investigated. Dual conditioning utilizing a polyampholyte (AC4601) in combination with aluminum chloride (AlCl 3), ferric chloride (FeCl 3), and calcium chloride (CaCl 2) was studied. Capillary suction
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Chemical Conditioning for Removal of Water and Phosphate
网页The chemical conditioning required to improve water removal from waste activated sludge and phosphorus from the filtrate was examined in this study. The sludge, collected from a local municipal wastewater treatment plant, was adjusted to 10 g/L total solids (TS) before testing. The conditioning chemicals were ferric chloride (FeC1 3) and cation
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Dewatering method and agent Florida Institute of Phosphate
网页1993年11月12日 A method of dewatering mineral-containing sludge by adding to the sludge (a) an aqueous solution or emulsion of acrylamide polymer flocculating agent and (b) a microfiber additive. By using this metho See Bureau of Mines "The Florida Phosphate Slimes Problem: A Review and a Bibliography," Information Circular 8868, United States
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Biological release of phosphorus is more efficient from activated than
网页2020年7月6日 Sewage sludge is a rich source of phosphorus. The kinetics of orthophosphate release and the efficiency of phosphorus recovery from aerobic granular sludge (GS) and activated sludge (AS) were
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Efficient continuous electrokinetic dewatering of phosphatic
网页2019年3月1日 The phosphate deposits consist of phosphate ore, clay, and sand in approximately equal proportions [2]. The beneficiation of phosphate ore is achieved by froth flotation. The phosphate is converted to phosphoric acid for subsequent use as an essential nutrient in fertilizer [3]. The sand component is separated and reinserted into the open
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Characterization of morphology and component of struvite
网页2016年6月5日 A lab-scale struvite pellet crystallization system was used to study phosphorus (P) removal and recovery from sludge dewatering liquor (SDL). Influences of total suspended solids (TSS) and phosphate concentrations on P removal as well as the size, morphology, purity, and components of struvite pellets were investigated.
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