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Wednesday, July 22, 2020 | History

2 edition of Lime stabilization and ultimate disposal of municipal wastewater sludges found in the catalog.

Lime stabilization and ultimate disposal of municipal wastewater sludges

Robert M Otoski

Lime stabilization and ultimate disposal of municipal wastewater sludges

by Robert M Otoski

  • 358 Want to read
  • 17 Currently reading

Published by U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory, Center for Environmental Research Information [distributor] in Cincinnati, OH .
Written in English

    Subjects:
  • Sewage sludge,
  • Sewage disposal in the ground,
  • Stabilizing agents

  • Edition Notes

    StatementRobert M. Otoski
    ContributionsMunicipal Environmental Research Laboratory (Cincinnati, Ohio)
    The Physical Object
    Pagination3, [1] p. :
    ID Numbers
    Open LibraryOL14892933M

    Municipal Wastewater, Sewage Sludge, and Agriculture 19 sludge treatment). Treated effluents are customarily discharged into a surface water body. With advances in wastewater treatment technology, wastewater effluents can achieve consistently high quality and are increasingly reclaimed for reuse. Municipal Sewage Sludge Management: A Reference Text on Processing, Utilization and Disposal, Second Edition, Volume IV - CRC Press Book FROM THE PREFACEThis textbook explains and discusses many of the unit operations used for processing municipal sewage sludge.

    The book offers important information on emerging practices for safe and legal sludge disposal. Numerous case studies and sample problems are included for the benefit of instructors and students. Special features: comprehensive explanation of sludge theory and engineering design; covers US and European disposal regulations and practices; and. Sludge may be stabilized by use of lime, by aerobic digestion, or by anaerobic digestion. Lime stabilization is achieved by adding lime (as hydrated lime, Ca(OH) 2, or as quicklime, CaO) to the sludge and thus raising the pH to 11 or above. This significantly reduces odor and .

    Sludge, biosolids, and faecal sludge are generated during management of wastewater and the contents of latrines. The direct disposal of untreated sludge is not desirable because it: 1) has odors, 2) is comprised primarily of water which makes transport and disposal expensive, and 3) contains harmful environmental pollutants and pathogens. Several processes can decrease pathogen concentrations. AN INTRODUCTION TO SLUDGE HANDLING, TREATMENT AND DISPOSAL 1. GENERAL CONSIDERATIONS. Sludge, or residual solids, is the end product of wastewater treatment, whether biological or physical/chemical treatment. Primary sludge is from 3 to 6 percent solids. Treatment objectives are reduction of the sludge.


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Lime stabilization and ultimate disposal of municipal wastewater sludges by Robert M Otoski Download PDF EPUB FB2

Introduction The process of lime stabilization in- volves adding lime to wastewater- derived sludge in quantities sufficient to raise the pH of the sludge to for a contact period of at least 2 hours.

PB Liar.e Stabilization and Ultimate Disposal of Municipal Wastewater Sludges Camp, Dresser and McKee, Inc. Boston, MA Prepared for ¦unicipal Environmental Research Lab Cincinnati, OH May 81 3 U.S. OtpartMtt of Cmmm National Technical Information Service.

: Sludge Engineering: The Treatment and Disposal of Wastewater Sludges (): F from Water Treatment Plants Iron Sludges from Wastewater Treatment Plants Lime and Water Softening Sludges Metal Hydroxides Ultimate Disposal of Industrial Sludges Conclusions References 4/5(1).

Get this from a library. Lime stabilization and ultimate disposal of municipal wastewater sludges. [Robert M Otoski; Municipal Environmental Research Laboratory.].

Lime Disinfection of Wastewater Sludges. will find that dry lime stabilization is a cost-effective innovative technology. (See also W) (Author 's The ultimate disposal method for.

Treatment and disposal of wastewater sludges. Aarne Vesilind yield filtration floc flocculation flotation Hazen-Williams equation head loss heavy metals incinerator increase laboratory lb/day lime liquid machine solids concentration solids flux solids recovery specific gravity specific resistance tank temperature thermophilic tion.

Iron Sludges from Wastewater Treatment Plants Lime and Water Softening Sludges Metal Hydroxides Ultimate Disposal of Industrial Sludges Conclusions References Problems. CHAPTER LAND DISPOSAL OF SLUDGE AS BIOSOLIDS Benefits of Sludge Disposal on Land Land Application of Biosolids.

Purpose for Alkaline (Lime) Stabilization of Sludge. In order to be land applied, municipal biosolids must meet certain EPA-defined criteria in regards to pathogen content reduction and vector attraction reduction. There are several options available to wastewater treatment plants for meeting these criteria.

Characteristics of process solids, sludges and residuals that can be generated during operation and maintenance of decentralized wastewater treatment systems. Treatment at a municipal wastewater treatment plant Lime : Robert L.

Siegrist. Lime-Stabilized Sludge Treatment Systems by Claro Inc. Claro designs and manufacturers reliable and cost-effective lime-sludge stabilization systems that deliver EPA Class A- or Class B-certified biosolids.

Reduction of pathogens, odors, and the vect. Raw (primary) sludges from the mechanical biological municipal sewage treatment plant were used. Aerobic stabilization and lime hydrated stabilization were carried out in a laboratory fermentor.

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.

Municipal Wastewater and Sludge Treatment also illustrates the origin and treatment of municipal wastewater sludges applied to cropland. Following treatment, sludges may be disposed of (for example, in a landfill) or used for food crop can appreciably increase the mass of solids in sludges.

Biological stabilization acts to. The lime stabilization of the lagoon sludges was evaluated by dosing the sludges with lime and applying sludges to bench scale drying beds.

Lime addition produced high fecal coliform reduction, and the limed sludges readily dewatered on both sand and soil by: 1.

Lime stabilization of primary sludges Joseph B. Farrell, James E. Smith, Jr., Steven W. Hathaway, and Robert B. Dean In latethe Municipal Treatment Technology Program at the Environ mental Protection Agency's (epa) National Environmental Research Center in Cincin nati conducted a pilot plant study at the Lebanon, Ohio, wastewater.

Stabilization of sludge can be done chemically or biologically, though the latter is more common and effective. Lime stabilization is achieved when a sufficient amount of lime is added to the sludge to alter the value of pH to a high level (>11) that no microorganisms can survive. The standard lime stabilization process and two process modifications are effective procedures for reducing fecal streptococcus concentrations (disinfection) in wastewater sludges.

Depending on the process modification, fecal streptococcus concentrations in treated sludges ranged from a 7-log decrease to a 3-log increase over seven by: 5. 9 For small waste treatment facilities, the simple answer is to avoid the generation of waste sludge from the start.

At large facilities, the simple answer is to turn from sludge disposal to sludge utilization: the millions of tons of sludge generated each day are a valuable and sustainable energy Size: 2MB.

Likewise, the composition of sewage sludge and SSA depends on the wastewater origin, but also on the technological process of wastewater and sludge treatment (for instance, which level of treatment is applied (secondary or tertiary) or whether lime is added to sludge in the final phase of treatment, etc.) (Nakic et al.

).Cited by: 2. lime sludges. They reported 1bat the average coefficient of compressibility for the first three alum sludges ranged b - tween andwhereas that of the lime sludge waindicating that the lime ludge is con iderably les compre s­ ible than the alum sludge. The coefficient of compres ibility.

Guidelines for the application of municipal wastewater sludges to agricultural lands were first published by Alberta Environment in March The guidelines were intended for the use of municipalities considering or practicing land application as a method of municipal wastewater sludge disposal.Alkaline or lime stabilization is a very simple process.

Its principal advantages over other stabilization processes include low cost and simplicity of operation. However, lime stabilization accomplished at a pH of –, may allow odors to return during storage owing to pH decay.A method for the lime stabilization of wastewater sludge, comprising the steps of: dewatering sludge so as to produce a sludge cake containing from about 10 to 60% by weight of dry solids; and thereafter mechanically separating and fluidizing said sludge cake to expose the surface area thereof in Cited by: