Dewatering Phosphate

Dewatering And Phosphorus Removal In Wastewater Treatment

Lanthanides bind differently, reducing biomass and facilitating dewatering. Phosphorus removal using lanthanides, cerium and lanthanum, remove phosphorus by forming a precipitate mineral with the phosphate

US20140352380A1 - 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 ...

[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-ture to effect formation of calcium sulfate dihydrate crystals in the admixture, and recovering a liqwd

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 ...

Electrokinetic dewatering of a phosphate clay - ScienceDirect

Aug 01, 1997 · Electrokinetic dewatering of a phosphate clay suspension from Florida was investigated in an electrokinetic cell and in a model tank. The results demonstrated that the sedimentation velocity was controlled by the applied current density. The techniques of intermittent current and polarity reversal improved the effectiveness and efficiency of ...

US Patent for Process for the dewatering of phosphate ...

Dec 03, 1993 · The problem of dewatering phosphate slimes, slurries and muds is especially troublesome because the slimes generally fail to settle out principally because of the small size of the particulate material. Because of the hydrophilic nature of the phosphate slime, the solid content of the slime, even if placed in a settling pond for considerable ...

STATE-OF-THE-ART OF PHOSPHATIC CLAY DEWATERING

Dec 02, 2014 · DEWATERING TECHNOLOGY AND DISPOSAL TECHNIQUES (In Two Parts) 1. A Review of Phosphatic Clay Dewatering Research By Walter E. Pittman, 1 and John W. Sweeney 2 ABSTRACT The Florida phosphate industry currently produces more than 80 pct of the total U.S .supply of phosphate rock.

[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-ture to effect formation of calcium sulfate dihydrate crystals in the admixture, and recovering a liqwd

PHOSPHATE FERTILIZER EXPERTISE

• Dewatering, disposal, and reclamation of wastes • Dewatering, preparation, and load-out of product • Plant water, reclaim water and make-up water systems • Dust suppression and collection • Offsites, ancillaries and services. In today’s global economy, phosphate rock must be produced to meet

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 ...

Large-Scale Dewatering of Phosphatic Clay Waste From

LARGE.SCALE DEWATERING OF PHOSPHATIC CLAY WASTE FROM POLK COUNTY, FL By D. R. Brooks, 1 B. J. Scheiner, 2 A. G. Smelley, 3 and J. R. Boyle, Jr.4 02 ABSTRACT The Bureau of Mines has tested a dewatering technique for phosphatic

Clay Settling Ponds - Florida Industrial and Phosphate ...

Dewatering and consolidating the clay, which retains water, is easier said than done. FIPR developed a process known as the FIPR-DIPR (Dewatering Instantaneously with Pulp Recycle) about 10 years ago and is again studying ways to make the rapid dewatering process economically feasible.

AirPrex™: Biosolids Treatment Optimization Process with ...

• The specific phosphate precipitation by Struvite crystallization (AirPrex™) leads to the following advantages • Minimize the crystallization potential • Positive impact on the sludge dewatering by a constant P-Elimination rate between 90 and 95% • AirPrex™ is an approved and reliable technology with large-scale references

Efficient continuous electrokinetic dewatering of ...

Mar 01, 2019 · The Florida Phosphate Land Reclamation Act 28.378(2) mandated the restoration of mined lands and the development of technologies to accelerate dewatering. The initiative has spurred the development of enhanced dewatering technologies for phosphatic clay.

Enzymatic dewatering of Florida phosphate slimes ...

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 mechanical binding between slime particles.

Zinc Phosphate Sludge Dewatering Equipment

Sep 01, 2021 · Welcome to the premier industrial source for Dewatering Equipment: Sludge, Zinc Phosphate. The companies featured in the following listing offer a comprehensive range of Dewatering Equipment: Sludge, Zinc Phosphate, as well as a variety of related products and services. ThomasNet provides numerous search tools, including location, certification and keyword filters,

LEG-R 048 01 09-12 Mining and Dewatering Materials Other ...

MINING AND DEWATERING OF MATERIALS OTHER THAN PHOSPHATE WATER USE PERMIT APPLICATION PARTS II & III LEG-R.048.01 (9/12) Page 3 of 24 40D-2.101(2)(d), F.A.C D. SERVICED PROPERTY: This applies to land for which the applicant will provide water for another property owner’s

EloVac®-P - ELIQUO Technologies

EloVac®-P is a compact, skid-mounted vacuum degassing technology for digested sludge with simultaneous phosphate precipitation, which improves dewatering and reduces the phosphate return load. This technology is particularly beneficial for any anaerobic digestion plant with struvite scaling issues looking to improve dewatering and reduce ...

Enhancing sludge dewaterability and phosphate removal ...

Furthermore, we demonstrated a dramatic reduction in the concentration of phosphate (P) in anaerobically digested sludge (ADS) under various reaction conditions. H 2 O 2 was employed to convert embedded iron in ADS, in the form of FeS, to Fe (II) and Fe (III), which subsequently reacted to precipitate phosphate compounds, dropping the in situ P ...

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 ...

Phosphates in Sewage and Sludge Treatment. IV. Effect of ...

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 HP04; sodium hexametaphosphate, NaP03 (calgon) ; and disodium phosphate, Na2HP04. The results of a series of experiments are shown in Figure 3,

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.

Phosphorus Treatment and Removal Technologies

with soluble phosphate to form solid precipitates that are removed by solids separation processes including clarification and filtration. The most common metal salts used are in the form of alum (aluminum sulfate), sodium aluminate, ferric chloride, ferric sulfate, ferrous sulfate, and ferrous chloride. Chemical treatment is the most common

Dewatering Upgrades Can Improve Phosphate Tailings Filtration

An International Fertilizer article by Jerold Johnson and Brad Bentley explains how thickener upgrades can optimize phosphate tailings dewatering. An International Fertilizer article by Jerold Johnson and Brad Bentley explains how thickener upgrades can optimize phosphate tailings dewatering. ... Phosphate tailings is a prime example. In this ...

Enhancing sludge dewaterability and phosphate removal ...

Furthermore, we demonstrated a dramatic reduction in the concentration of phosphate (P) in anaerobically digested sludge (ADS) under various reaction conditions. H 2 O 2 was employed to convert embedded iron in ADS, in the form of FeS, to Fe (II) and Fe (III), which subsequently reacted to precipitate phosphate compounds, dropping the in situ P ...

Increasing phosphorus recovery from dewatering centrate in ...

Mar 20, 2017 · Thus, an extra amount of phosphate (1.5, 3.0, or 4.5 mM as Na 2 HPO 4) was added to the dewatering centrate to simulate downstream wastewater from biological phosphorus removal processes. Note that 80% of phosphorus removed from biological phosphorus removal processes was released in anaerobic digestion [ 27 ] and the released amount of ...

SLUDGE DEWATERING - SNF Holding Company

The higher the VS, the more difficult the dewatering. The dryness achieved will be low, the mechanical properties will be low and the flocculant consumption will be high. When the VS of the sludge is high, it is recommended to add a thickening stepin the process in order to achieve a better dewatering. 1.3.3. The colloidal nature of the sludge:

Recirculation of reject water in deep-dewatering process ...

Compared with raw sludge, the deep-dewatering filtrate after different conditioning and dewatering processes had higher ammonia nitrogen (NH 4 +-N) and chemical oxygen demand (COD) contents due to the degradation of organic matter, and much lower total phosphorus (TP) content due to the formation of iron phosphate precipitate.

Well point dewatering of phosphatic clays (Book, 1989 ...

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LEG-R 048 01 09-12 Mining and Dewatering Materials Other ...

MINING AND DEWATERING OF MATERIALS OTHER THAN PHOSPHATE WATER USE PERMIT APPLICATION PARTS II & III LEG-R.048.01 (9/12) Page 3 of 24 40D-2.101(2)(d), F.A.C D. SERVICED PROPERTY: This applies to land for which the applicant will provide water for another property owner’s

Advanced Phosphorus Removal Study Guide

elbows, mixer blades, valves, pump impellers and dewatering equipment. Sludge phosphorus content is defined as the percentage of phosphorus in cell mass and is expressed as P/VSS (%). In a conventional activated sludge treatment process, the sludge phosphorus content is approximately 1.5 - 2.5%. In an enhanced biological phosphorus

5-09 Ferric, Alum or Llime - environmentalleverage

7.5. Iron and aluminum phosphate-containing sludge have been reported to be treated successfully in anaerobic digestion and sludge dewatering processes without phosphate release (Sedlak, 1991). The optimum pH for P removal using alum ranges from 5.5 to 6.5, but

Phosphorus recovery and reuse from wastewater ...

Phosphorus recovery and reuse from wastewater. Phosphorus (P) is essential to human life and vital for food production. It is the critical building block of DNA, cell membrane and bones and plays a crucial role in cellular energy metabolism. Today, P is mostly obtained from mined phosphate (P i) rock, but natural reserves of P i rock are ...

Heavy Metals Removal Industrial Wastewater Solutions

Two-Stage Fluoride and Phosphate Removal Two-Stage Fluoride / Phosphate Removal from Gypsum Stack. WesTech has experience in the phosphoric acid industry includes clarification, thickening, and dewatering. Calcium fluoride and calcium phosphate slurries present specific challenges.

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