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dewatering phosphate method

  • Polymers: Precipitation and Dewatering - Tramfloc, Inc.

    Ferric Sulfate [Fe 2 (SO 4) 3] – Applications include water clarification, decolorization of surface water, sludge conditioning and dewatering, trace metals removal, organics removal (including trihalomethanes), sulfide control, phosphate removal, oil &grease separation and DAF. Available as a solid and in solution (10-13% iron) form.

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  • Comparison of pretreatment methods for phosphorus release ...

    Jul 15, 2019· Sludge pretreatment has attracted increasing attention for improving AD since the disposal of WAS can account for 50% of total operating cost for WWTPs while sludge production is expected to increase further in the near future .By pretreatment, sludge as microbial aggregates is disintegrated and partially solubilized to facilitate the hydrolysis of particulate organics and macromolecules ...

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  • A review on sludge dewatering indices - Semantic Scholar

    problem are linked to different aspects of sludge properties, conditioning and dewatering methods. Initially, as mentioned earlier, sewage sludge can vary enormously in terms of physical, chemical and biological characteristics, leading to its relatively unpredictable behaviour, especially dewatering behaviour (Colin et al. 1988). This makes it ...

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  • Treatment Techniques for Removing Phosphorus From ...

    ----- TREATMENT TECHNIQUES FOR REMOVING PHOSPHORUS PROM MUNICIPAL WASTEWATERS John J. Convery Sanitary Engineer Presented at New York Water Pollution Control Association New York, New York Program #17010 Environmental Protection Agency Water Quality Office Advanced Waste Treatment Research Laboratory Cincinnati, Ohio January 29, 1970 For sale by the …

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  • Denmark's DTU invents new concrete production method ...

    The Technical University of Denmark (DTU) has invented a new method to separate ashes from burnt wastewater sludge and use it for concrete production. DTU has patented a method for electrodialytic separation of secondary raw materials. It is now hoping to enter into cooperation with the construction sector to use the wastewater sludge ashes, that have been purified from phosphorus and heavy ...

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  • Chemical Engineering at the University of Florida

    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, dewatering with ...

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  • How Does a Sludge Dewatering Centrifuge Work? - AOS ...

    Aug 21, 2018· A sludge dewatering centrifuge uses a fast rotation of a "cylindrical bowl" to separate wastewater liquid from solids. The wastewater centrifuge dewatering process removes more water than other methods and leaves solid material that is known as cake. Dewatering means less tank space is needed to store waste products.

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  • US4808304A - Apparatus for the dewatering of phosphate ...

    Method and apparatus for dewatering mill tailings, slimes and slurries, wherein ultra fine particles materially reduce the rate of natural dewatering and hinder their disposal in the mining and processing of phosphate, coal, potash, uranium, talc and the like. The invention is preferably carried out in a closed loop system involving the use of electrokinetic densification and substantially ...

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  • Increasing phosphorus recovery from dewatering centrate in ...

    The degassing of CO 2 from sludge dewatering liquors has been described previously as a suitable method to increase the pH of dewatering liquors, but this is not applicable to all WWTPs 5,8.The ...

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  • The role of pH on the biological ... - Scientific Reports

    The degassing of CO 2 from sludge dewatering liquors has been described previously as a suitable method to increase the pH of dewatering liquors, but this is not applicable to all WWTPs 5,8.The ...

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  • Phosphorus Removal From Wastewater, Reduce Sludge From ...

    Oct 31, 2018· The Simple Truth: You Can Lower Phosphorus Levels Without Adding Capital Equipment. A better method for lowering P levels and reducing sludge has been proven effective in more than 50 wastewater treatment plants — and you don't need to add capital equipment

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  • Phosphorus Removal From Wastewater, Reduce Sludge From ...

    Request PDF | Development of Electrokinetic Dewatering for Phosphate Mine Tailings | Solid-liquid separation represents a significant problem for the phosphate mining industry. A dilute suspension ...

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  • (PDF) PHOSPHORUS RECOVERY FROM SEWAGE SLUDGE AND …

    Phosphorus recovery from sewage sludge and leachates At the moment, the most widely used technologies of phosphorus recovery are those based on precipitation of …

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  • AirPrex™: Biosolids Treatment Optimization Process with ...

    Phosphate product (quantity) Phosphate product (quality) Interruption of P-recycling (internal) Prevention of scaling in pipes and pumps Optimization of the dewatering process Pros and Cons of different P-Recovery processes

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  • Dewatering method and agent - Florida Institute of ...

    Nov 16, 1993· A method of dewatering mineral-containing phosphatic clay sludge comprising adding to the sludge (a) ... matted as soil amendments, chemically processed to recover residual phosphate values, etc. The method also provides a suitable method of disposing of paper waste.

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  • DESIGN OF ELECTROLYTIC DEWATERING SYSTEMS FOR …

    how this project fit into the scope of the phosphate mining business. I would also like to thank Charles Guan, Rick Grove, and Brandon Russell of Mosaic Fertilizer LLC for their support. I thank Professor Guerry McClellan, Professor David Bloomquist, and Professor Hassan El-Shall for their advisement on issues related to clays and clay dewatering.

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  • Flocculation and Dewatering of Montmorillonite Modified …

    The method has been field-tested for the dewatering of phosphatic clay waste and coal-clay waste (l-l).3 Previous dewatering studies showed that calcium ion exchange of montmorillonite­ containing phosphate slimes reduced the amount of PEO needed for dewatering (1). It …

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  • Phosphate Rock Dewatering Optimization - Henan TENIC ...

    Phosphate Rock Dewatering Optimization. Back. Phosphate Rock Treatment for Waste Reduction. 01112125Final. Summary. 1.1 Background. Separation of calcite andor dolomite from phosphate rock by flotation is becoming the practice in several phosphate mining areas where higher carbonate contamination is encountered.

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  • EP2766301A1 - Dewatering of phosphate precipitates ...

    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 use of a hydrocyclone followed by the removal ...

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  • Electrokinetic Methods For Dewatering Of Phosphatic Clay ...

    Request PDF | Electrokinetic Methods For Dewatering Of Phosphatic Clay Slurries | Phosphatic clay slurries constitute a waste product of the Florida phosphate mining industry. The clay slurries ...

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  • US4563285A - Method for dewatering phosphate slimes ...

    A method for dewatering phosphate slimes and recovering a liquid solution involves adding a calcium sulfate hemihydrate to the slimes, mixing the resulting admixture to effect formation of calcium sulfate dihydrate crystals in the admixture, and recovering a liquid solution from the resulting crystal-containing admixture. The calcium sulfate hemihydrate addition may be followed by addition of ...

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  • Sludge Dewatering Systems - Centrasep

    Sludge Dewatering Sludge dewatering systems can be custom engineered and integrated into your process to remove solid waste, extracting the water from sludge. Choosing the correct sludge dewatering system that is right for you and your process is vital for maximum efficiency and to …

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  • Dewatering | Ecolab

    Sludge dewatering is the removal of water from wastewater treatment solids slurry (sludge) in quantities greater than what is achieved by thickening. Mechanical processes and land dewatering techniques are detailed to aid in selecting the most appropriate method for the sludge under consideration.

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  • Accelerated Dewatering | Canada's Oil Sands Innovation ...

    A method called Accelerated Dewatering is being piloted to cost effectively, and with minimal energy input, separate process water from large volumes of fluid fine tailings. A tailings pond includes the water, sand, clay and residual oil that is left over after oil sands processing.

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  • [19) [II] [4S] [54] MEmOD FOR DEWATERING PHOSPHATE …

    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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  • Design Manual Dewatering Municipal Wastewater Sludges

    The most common methods of disposing of the cake are shown in Table 4-4. The end-product of each dewatering method is rated in terms of the product acceptability vis-a-vis the ultimate disposal of the residuals. However, this table is not meant to establish the compatibility of the dewatering process and the end- disposal means.

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  • Method 353.2, Revision 2.0: Determination of Nitrate ...

    METHOD 353.2 DETERMINATION OF NITRATE-NITRITE NITROGEN BY AUTOMATED COLORIMETRY 1.0 SCOPE AND APPLICATION 1.1 This method covers the determination of nitrite singly, or nitrite and nitrate combined in drinking, ground, surface, domestic and industrial wastes. 1.2 The applicable range is 0.05-10.0 mg/L nitrate-nitrite nitrogen. The range may

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  • Phosphorus recycling – valuable materials from sewage ...

    The P-RoC (phosphorus recovery from waste and process water by crystallisation of calcium phosphate) developed by the Competence Centre for Material Moisture (CMM) at the Karlsruhe Institute of Technology (KIT) can be used to recover phosphate from sludge water that results from the dewatering of sewage sludge.

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  • STUDY ON THE DEWATERING TREATMENT OF RADIOACTIVE SLUDGES ...

    The most effective dewatering method for bentonite-Konan Floc, calcium phosphate, and ferric hydroxide sludges is summarized. Vacuum filtration after freezing and thawing was considered to be the most effective method.

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  • Increasing phosphorus recovery from dewatering centrate in ...

    However, the phosphorus recovery was below 27% especially when an additional phosphate was provided in the dewatering centrate. Three different phosphate concentrations (1.36, 2.63, and 3.26 mM) were examined in the experimental Set C to simulate downstream wastewater from enhanced biological phosphorus removal processes [28, 29].

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