Last edited by Shaktitaxe
Saturday, May 16, 2020 | History

2 edition of butane freezing process for dewatering sludge found in the catalog.

butane freezing process for dewatering sludge

M. Z. Ali Khan

butane freezing process for dewatering sludge

by M. Z. Ali Khan

  • 375 Want to read
  • 28 Currently reading

Published by Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University in Blacksburg .
Written in English

    Subjects:
  • Sewage sludge -- Drying.

  • Edition Notes

    StatementM. Z. Ali Khan, Clifford W. Randall, N. Thomas Stephens.
    SeriesBulletin - Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University ; 94, Bulletin (Virginia Water Resources Research Center) ;, 94.
    ContributionsRandall, Clifford W., joint author., Stephens, N. Thomas, joint author.
    Classifications
    LC ClassificationsTD201 .V57 no. 94, TD769.7 .V57 no. 94
    The Physical Object
    Paginationvi, 83 p. :
    Number of Pages83
    ID Numbers
    Open LibraryOL4695214M
    LC Control Number77621915

    Close mobile search navigation. Article navigation. Volume 28, Issue 1Cited by: Dewatering for food waste high biochemical oxygen demand and high variations in pH (Kroyer, ). With a dewatering process, the underlying advantage is that the water is removed in the liquid state. The lack of a phase change renders the process less energy-intensive and in some instances may improve the end-product quality.

    Jan 14,  · Denitrification problems can be often controlled by increasing the recycle pump to reduce sludge blanket depth/sludge retention time in the clarifier. The problem is often related to an increase in influent ammonia/nitrogen that is converted by beneficial nitrifiers into NO2 or NO3 via the autotrophic nitrification process. Find sludge dewatering (water and wastewater) books and publications, the world’s largest environmental industry marketplace and information resource. Sludge Dewatering Books. Natural Wastewater Treatment Systems, Second Edition Tailings are fine-grained residues from the milling process, emerging as slurries that are deposited in.

    Get this from a library! Evaluation of conditioning and dewatering sewage sludge by freezing. [Anthony Geinopolos; Milwaukee (Wis.). Sewerage Commission.; United States. Environmental Protection Agency. Office of Research and Monitoring.] -- Data was obtained for a direct comparison between the freeze conditioning and dewatering technique and the conditioning and dewatering methods presently. Sludge issues are truly international in scope and this is also reflected in the new book, covering both policies and practices with a global perspective. This is the best available text for any course on sludge and biosolids management.


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Butane freezing process for dewatering sludge by M. Z. Ali Khan Download PDF EPUB FB2

Bulletin 94 November A Butane Freezing Process for Dewatering Sludge. Ali Khan Department of Environmental Conservation Albany, New York. Note: Citations are based on reference standards. However, formatting rules can vary widely between applications and fields of interest or study.

The specific requirements or preferences of your reviewing publisher, classroom teacher, institution or organization should be applied. BibTeX @MISC{Khan76abutane, author = {M. Ali Khan and Clifford W. Randall and N. Thomas Stephens and M.

Ali Khan and Clifford W. Randall and N. Thomas Stephens}, title = {A Butane Freezing Process for Dewatering Sludge}, year = {}}. The authors contend that sludge freezing can be a practical process for dewatering—when done at the right rate with a sludge that has been adequately prepared.

SLUDGE DEWATERING BY FREEZING - Logsdon - - Journal - AWWA - Wiley Online LibraryCited by: Liquid butane was used as the refrigerant and it was bubbled through the liquid sludge to form an ice-sludge slurry.

Economic investigation included butane recovery techniques. The results of the investigation showed that the dewaterability of waste activated sludge can be greatly improved by slurry freezing with liquid butane. Slurry freezing results in better conditioning and a better quality supernatant than does solid freezing because fewer cellular solids are destroyed by the freezing Cited by: Freezing, a process to completely solidify sludge, separating water into sheets of ice and concentrating the electrolytes in the sludge, is a very effective method for reducing the quantity of water bound in the matter.

This property remains stable after the ice has melted and produces a sludge that is much more filterable. Summary of freeze-thaw conditioning of chemical sludges Specific resistance Dewatered cake Sludge type Conditioning method (m kg-~10") solids concentration (%) (1) Fe (OH)3(s) sludge None 31 from WTP Direct freezing (butane) 19 Indirect freezing 7 (2) AI(OH)3(s) sludge None from Radford, Va WTP Direct freezing (butane) Direct freezing (Freon) Cited by: Activation of nitrite by freezing process for anaerobic digestion enhancement of waste activated sludge: Performance and mechanisms Author links open overlay panel Xuran Liu a b Xiaoding Huang a b Yanxin Wu a b Qiuxiang Xu a b Mingting Du a b Dongbo Wang a b Qi Yang a b Yiwen Liu c Bing-Jie Ni c Guojing Yang d Fan Yang e Qilin Wang cAuthor: Xuran Liu, Xiaoding Huang, Yanxin Wu, Qiuxiang Xu, Mingting Du, Dongbo Wang, Qi Yang, Yiwen Liu, Bin.

The mass loadings used during the dewatering of the freeze conditioned activated sludge was on the order of 60 pounds per hour of dry solids per square foot as compared to 1 to 5 pounds per hour per square foot for conventional vacuum filtration.

Characteristics and dewatering of MBR sludge. The results showed that the direct slurry freezing process using liquid normal butane as the refrigerant is an extremely effective method for. built up throughout the series and the books, from the determination of the waste-water characteristics, the impact of the discharge into rivers and lakes, the design of several wastewater treatment processes and the design of the sludge treatment and disposal units.

The series is comprised by the following books, namely: (1) Wastewater. The introduction of the sludge conditioning process as a pre-dewatering stage helps separate sludge into the solid and liquid phases and reduces forces that bind water to the surfaces of solids.

The actual freezing point of the sludge was since the freezing point was depressed by the dissolved solids. The liquid butane rate of flow was fts s-t (30 ml min- t) per rill of sludge and "butane contact" or freezing times of 10, 20, 40, Cited by: Mar 01,  · In this study, nitrite was added into sludge during freezing process to evaluate its role in waste activated sludge (WAS) solubilization and effect on sludge dewatering characteristics.

The results showed that the introduction of mg L−1 of nitrite could increase dissolved organic carbon Cited by: Dewatering wastewater treatment sludge by clathrate freezing: A bench-scale feasibility study [Benjamin Molayem] on abcdfestivalgoa.com *FREE* shipping on qualifying abcdfestivalgoa.com: Benjamin Molayem.

EMWATER E-LEARNING COURSE PROJECT FUNDED BY THE EUROPEAN UNION LESSON B5: SEWAGE SLUDGE TREATMENT Page 3 of 23 Overview and summary of this Lesson Sludge originates from the process of treatment of wastewater and is separated from the treatment process by sedimentation or flotation.

Dewatering involves controlling groundwater by pumping, to locally lower groundwater levels in the vicinity of the excavation. Groundwater Engineering’s team has decades of experience in dewatering projects around the world, and we provide a complete design and installation service to control your groundwater problems.

Utilizing butane as the refrigerant, the direct slurry freezing process was employed to condition waste activated sludge in order to improve subsequent dewatering.

Using batch and continuous flow labreactors, the process was evaluated from both a technical and economical standpoint. United States Environmental Protection Agency EPA// Technology Transfer Design Manual Dewatering Municipal Wastewater Sludges critical review of municipal wastewater sludge dewatering process technology.

as rainfall and freezing weather have an impact on usefulness Requires large land areas High labor requirement for sludge. Gravity Table GT: effective pre-dewatering of sludge with low solids in filtrate.

The ANDRITZ Gravity Table GT is used as a first dewatering stage for sludge prior to subsequent pressing operations (e.g. pressure filters of sludge screw presses). Oil Sands Sludge Dewatering by Freeze-thaw and Evapotranspiration.

Author(s) / Creator(s) Koverny, L. Bork, P. Johnson, R. L. James, W. H. Allen, E. A. D. The dewatering of oil sands sludge is a major technological, economical, and environmental challenge to the oil sands industry of northeastern abcdfestivalgoa.com by: 8.Utilizing butane as the refrigerant, the direct slurry freezing process was employed to condition waste activated sludge in order to improve subsequent dewatering.PhD University of Texas, Contact.

About. direct slurry freezing. High recovery rate of butane is one reason why process effectively and economically accomplishes sludge dewatering.