Jun 29, 2015· The dewatering performance and fractal characteristics of alum sludge from a drinkingwater treatment plant were investigated in this study. Variations in residual turbidity of supernatant, dry solid content (DS), specific resistance to filtration (SRF), floc …
The effect of anionic polyacrylamide flocculant on the dewatering performance was also evaluated. Results indicate that geotextile tubes can be effectively used for dewatering flocculated fly ash slurries, and that the strength of retained fly ash can be improved by adding fibers.
A laboratory investigation was conducted for studying the efficacy of geotextile tubes for dewatering hydraulically transported fly ash slurry. The dewatering behavior of unmodified fly ash was compared with that of specimens reinforced with randomly dispersed flexible PVA fibers and/or flocculated with optimized polyacrylamide.
Method for dewatering sewage sludge with the aid of organic polymeric flocculating agents (polyelectrolytes) made preferably by emulsion polymerization. To obtain optimum dewatering results, a substantial amount of the aqueous phase of the sludge is removed by decantation after flocculant addition prior to the dewatering treatment proper.
Oct 27, 2014· In some cases, the reduction in surface tension and the increase in hydrophobicity or a combination of both are able to improve surfactant dewatering . Interfacial tension can be reduced in the sludge system by adding CTAB, a good dewatering performance is obtained .
Improved dewatering behavior of clay minerals dispersions via interfacial chemistry and particle interactions optimization more by Angus McFarlane and Kristen Bremmell Orthokinetic flocculation of clay dispersions at pH and 22 degrees C has been investigated to determine the influence of interfacial chemistry and shear on dewatering and ...
Wet pressing webs of higheryield kraft pulp for improved strength Daniel F. Caulfield, Teresa L. Young, and Theodore H. Wegner ... where dewatering behavior is pressure limited, increasing press nip pressure is the most effective means of ... Wet pressing webs of higheryield kraft pulp for improved strength ...
Further application of shear to presedimented pulps improved consolidation by 5–7 wt% solid. Higher shear yield stresses and greater settling rates were displayed by PAM A based than PAM N based pulps and this is attributed to the former's more expanded interfacial conformation and greater clay …
“Estimation of dewatering intensity of the paper web in the wet part of paper machine 2009 and selection of alternative additives to improve dewatering intensity” 4 Preface The main objective of this thesis is to assess factors affecting dewatering behavior of the
Eﬀects of potassium permanganate conditioning on dewatering and rheological behavior of pulping activated sludge: mechanism and feasibility† Xin Zhang, abd Hui Cai,abd Jun Shenc and Hui Zhang*a The diﬃculties in sludge dewatering are associated with the high organic content, colloidal materials in
Common problems are: less fabric stability, wrinkles, fabric wear, changing dewatering behavior, distorted paper profiles, increased bearing load, broken rolls and torn fabrics. Three good reasons to measure tension with the TensioMaster. Calibrated for forming fabrics, but also suitable to measure changes in felts and dryer fabrics.
Improved dewatering of clay rich mineral dispersions using recyclable superabsorbent polymers. ... J. RalstonInfluence of hydrolyzable metal ions on the interfacial chemistry, particle interactions, and dewatering behavior of kaolinite dispersions. J. Colloid Interface Sci., 261 (2) (2003), pp. 349359.
The Effect of Solids Concentration, Flocculant Dosage and Particle Size on Dewatering Behavior of Tailings Sample at Shahrebabk Copper Complex M. R. Garmsiri1*, M. Hosseini Nasab2 1 Department of mining engineering, Sirjan branch, Islamic Azad University, Sirjan, Iran
Aug 29, 1989· The flocculated and thickened sludge may then be dewatered much more quickly with the dewatering behavior improved additionally by causing a reactivating flocculation to take place on the delivery side of the sludge feed pump. The Figures show a preferred embodiment of the inventive sludge dewatering system using a recessed plate press.
Jan 01, 2006· Polyacrylamide addition, whilst strongly facilitating primary dewatering, at best, played an indifferent role toward improving consolidation of the clay dispersions. The shear induced consolidation behavior appears to result from improved floc network restructuring and interfloc permeability.
was to investigate the dewatering behavior of centrifuged oil sand fine tailings for surface deposition using laboratory investigation program and numerical modeling. A material with 60% solids (e = ) was obtained using a benchscale centrifuge. The fine grained material (52% clay fraction) with a moderate water adsorption capacity
Jan 01, 2006· Read "Improved dewatering behavior of clay minerals dispersions via interfacial chemistry and particle interactions optimization, Journal of Colloid and Interface Science" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
In many cases, the activated sludge and anaerobic sludge will be premixed and transported to the sludge dewatering system, so the alkalinity is affected by the ratio of two sludges and highly changeable in practical operation process. The sludge dewatering performance and process stability can be improved by controlling typical sludge properties.
Effects of potassium permanganate conditioning on dewatering and rheological behavior of pulping activated sludge: mechanism and feasibility† Xin Zhang abd, Hui Cai abd, Jun Shen c and Hui Zhang * a a Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China.
PDF | This paper is concerned with studying the dewatering behavior of three samples of iron ore products. The objective is to improve the industrial filtration performance by taking into account ...
Therefore, addition of CBMs is expected to improve WAS electrodewatering performance for fuel treatment by enhancing sludge conductivity and filterability. In this study, we evaluated the effects of the three carbon materials (AC0, AC5, and graphite) on sludge electrodewatering behavior and the flammability of sludge cakes.
behavior of waste clays and sand tailings/clay mixtures (Bromwell and Oxford, 1977; Keshian, et al., 1977; Martin, et al., 1977), Bromwell Engineering developed laboratory testing and computer modelling techniques to predict the time rate of consolidation (or dewatering) of waste clays and
PDF | On Jul 1, 2019, Yifu Li and others published How does zero valent iron activating peroxydisulfate improve the dewatering of anaerobically digested sludge?
A study of the improvement in dewatering behavior of wastewater ... it might be able to improve the dewaterability of wastewater sludge. The water content and cake specific resistance of dewatered sludge without the addition of fly ash were 80% and ×1014 kg/m, respectively. When 50% (by dry
The dewatering rate, the dewatering behavior of various narrow size distributions, and the addition of several floc culants, oils, and wetting agents (surfactants) were investigated. Gray found that dewatering was improved by each of the above additions; and he alludes to the fact that the efficacy of several highly impure oils in dewatering ...
Feb 01, 2005· Abstract The influence of hydrolyzable metal ions (Mn(II) and Ca(II)) adsorption on the surface chemistry, particle interactions, flocculation, and dewatering behavior of kaolinite dispersions has been investigated at pH and
Oct 10, 2019· Dewatering Behavior of a WoodCellulose Nanofibril Particulate System ... Hakovirta et al. employed a method to improve the dewatering efficiency of pulp furnish through the addition of ...
Request PDF on ResearchGate | Improved Dewatering Behavior of Clay Minerals Dispersions Via Interfacial Chemistry and Particle Interactions Optimization | Orthokinetic flocculation of clay ...
This paper is concerned with studying the dewatering behavior of three samples of iron ore products. The objective is to improve the industrial filtration performance by taking into account the laboratory results. Mineral samples came from the Iron Ore Quadrangle in the state of Minas Gerais, Brazil.
greatly improved as compared to earlier models. Due to these properties, maximum groove depths and widths in particular can be implemented in the surface design. The versatile surface designs give additional void volume for the press roll covers, improve dewatering behavior in the nip and increase dry content. SolarPress A highperformance cover
Dewatering from sludge is an important sustainable issue in recent years, in this work, we found the unique behavior: Skeleton builder additions can improve the dewatering performance greatly, which related to the different pore structure of skeleton builder.
Improved dewatering behavior of clay minerals dispersions via interfacial chemistry and particle interactions optimization Authors: McFarlane, Angus ; Bremmell, Kristen ; AddaiMensah, Jonas