Activated sludge definition

Activated sludge means a biological wastewater treatment process in which a mixture of wastewater and sludge floc, produced in a raw or settled wastewater by the growth of microorganisms, is agitated and aerated in the presence of a sufficient concentration of dissolved oxygen, followed by sedimentation.
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Activated sludge means sludge floc produced in raw or settled wastewater by the growth of zoogleal bacteria and other organisms in the presence of dissolved oxygen and accumulated in sufficient concentration by returning floc previously formed;
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Activated sludge means a biological wastewater treatment process in which biodegradable pollutants in wastewater are absorbed, or adsorbed, by living aerobic organisms and bacteria in an aerated suspension that is separated from the treated wastewater.
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Examples of Activated sludge in a sentence

  • If at any stage it is found that the information/ documents supplied by the Tenderer is incorrect/forged, CERT-In reserves the right to initiate appropriate legal proceedings including Termination of the contract & forfeiture of EMD deposit.

  • Substance did not cause acute toxicity to the freshwater invertebrates EC₅₀, 48 hours: >1000 mg/l, Daphnia magnaEC₅₀, > 72 hours: 1000 mg/l, Freshwater algaeSubstance did not cause acute toxicity to the freshwater green algae EC₅₀, >: 100 mg/l, Activated sludge NOEC, 28 days: 0.131 mg/l, Oncorhynchus mykiss (Rainbow trout) NOEC, 28 days: 0.23 mg/l, Daphnia magnaPersistence and degradability There are no data on the degradability of this product.

  • Fraternal club means an organization of persons engaged in keeping, conducting and maintaining an establishment for bona fide fraternal, social, recreational, charitable, or athletic purposes or a political subdivision or entity of the state which is not engaged in the sale of alcoholic beverages solely for pecuniary gain or commercial profit.

  • Activated sludge was added in order to have initial concentration of 1 g L-1 of dry matter.

  • I also wish to thank the Association of Industrial Archaeologists for awarding me the 2008 Essay Prize and publishing the paper in Industrial Archaeology Review (Vol.

  • Activated sludge showed a very low sensitivity to sodium sulfate.

  • Basic of microbiology Biological : Wastewater treatment systems : BDO, Kinetics, Kinetics and Design of Aerobic Processes- Activated sludge process and its modifications.

  • Substance did not cause acute toxicity to the freshwater invertebrates EC₅₀, 48 hours: >1000 mg/l, Daphnia magnaEC₅₀, > 72 hours: 1000 mg/l, Freshwater algaeSubstance did not cause acute toxicity to the freshwater green algae EC₅₀, >: 100 mg/l, Activated sludge NOEC, 28 days: 0.131 mg/l, Oncorhynchus mykiss (Rainbow trout) NOEC, 28 days: 0.23 mg/l, Daphnia magnaPersistence and degradability The product is not expected to be biodegradable.

  • NOEC, 48 hours: pH 5.5 , Daphnia magna EC₅₀, 48 hours: pH 4.92 , Daphnia magna REACH dossier information.EC₅₀, 72 hours: pH 4.7 , Chlorella vulgaris REACH dossier information.EC₅₀, 3 hours: pH 5 - 5.5 , Activated sludge REACH dossier information.Persistence and degradability There are no data on the degradability of this product.

  • Activated sludge converts non-settleable and dissolved organic contaminants into biological floc, which can then be removed from the wastewater with further treatment.


More Definitions of Activated sludge

Activated sludge means a biological wastewater treatment process in which a mixture of wastewater and activated sludge is agitated and aerated and includes extended aeration and oxidation ditch treatment processes.
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Activated sludge means a biological sewage treatment process in which a mixture of sewage and sludge floc, produced in a raw or settled sewage by the growth of zoogloea and other organisms, is agitated and aerated in the presence of a sufficient concentration of dissolved oxygen, followed by sed- imentation. This definition includes but is not limited to: conventional activated sludge, extended aeration, step aeration, contact stabilization, Kraus process, Hatfield process, complete mix, high-rate aeration and oxidation ditches.
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Activated sludge means the suspended biomass containing living microbial organisms used in the Aeration Basin to degrade and remove dissolved organics from the wastewater.
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Related to Activated sludge

  • Activated means the status of any capacity or part of the Cable System in which any Cable Service requiring the use of that capacity or part is available without further installation of system equipment, whether hardware or software.

  • Reactivate or “reactivation” means the process as outlined in rule 645—21.16(17A,147,272C) by which an inactive license is restored to active status.

  • Reactivation means the process whereby an inactive licensee obtains a current license.

  • Activate means to enter the Reward Code on the activation website and select a particular supplier of goods or services to register for a Digital Reward Voucher;

  • Sewage sludge means a solid, semi-solid, or liquid residue generated during the treatment of domestic sewage in a treatment works as defined in section 6111.01 of the Revised Code. "Sewage sludge" includes, but is not limited to, scum or solids removed in primary, secondary, or advanced wastewater treatment processes. "Sewage sludge" does not include ash generated during the firing of sewage sludge in a sewage sludge incinerator, grit and screenings generated during preliminary treatment of domestic sewage in a treatment works, animal manure, residue generated during treatment of animal manure, or domestic septage.

  • Sewage sludge weight means the weight of sewage sludge, in dry U.S. tons, including admixtures such as liming materials or bulking agents. Monitoring frequencies for sewage sludge parameters are based on the reported sludge weight generated in a calendar year (use the most recent calendar year data when the NPDES permit is up for renewal).

  • Label means a display of written, printed, or graphic matter upon the immediate container of any

  • Filter means material placed in the useful beam to preferentially absorb selected radiations.

  • Deactivation means the retirement or mothballing of a generating unit governed by Tariff, Part V. Deactivation Avoidable Cost Credit:

  • Sludge dryer means any enclosed thermal treatment device that is used to dehydrate sludge and that has a maximum total thermal input, excluding the heating value of the sludge itself, of 2,500 Btu/lb of sludge treated on a wet-weight basis.

  • Plasma arc incinerator means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.

  • Displacement system means a device by which the seat or one of its parts can be displaced and/or rotated, without a fixed intermediate position, to permit easy access of occupants to the space behind the seat concerned;

  • Delivery System means the design and construction

  • Sludge means any solid, semi-solid, or liquid waste generated from a municipal, commercial, or industrial wastewater treatment plant, water supply treatment plant, or air pollution control facility exclusive of the treated effluent from a wastewater treatment plant.

  • Recycled water or “reclaimed water” means treated or recycled waste water of a quality suitable for non-potable uses such as landscape irrigation and water features. This water is not intended for human consumption.

  • Harvest batch means a specifically identified quantity of dried flower or trim, leaves, and other cannabis plant matter that is uniform in strain, harvested at the same time, and, if applicable, cultivated using the same pesticides and other agricultural chemicals, and harvested at the same time.

  • Sampler means a person who is employed by or is an owner of a licensed laboratory, grower, or processor and is authorized by that employer to collect samples in accordance with the testing laboratory's standard operating procedures and these Rules.

  • Single tomogram system means a CT x-ray system which obtains x-ray transmission data during a scan to produce a single tomogram.

  • Open type traction battery means a type of battery requiring filling with liquid and generating hydrogen gas that is released to the atmosphere.

  • Electrostatic application means the application to a substrate of charged atomized paint droplets that are deposited by electrostatic attraction.

  • Cyanoacrylate adhesive means any adhesive with a cyanoacrylate content of at least 95% by weight.

  • Electrostatic spray means a method of applying a spray coating in which opposite electric charges are applied to the substrate and the coating. The coating is attracted to the substrate by the electrostatic potential between them.

  • Aerosol adhesive means any adhesive packaged as an aerosol product in which the spray mechanism is permanently housed in a nonrefillable can designed for hand-held application without the need for ancillary hoses or spray equipment. Aerosol adhesives include special purpose spray adhesives, mist spray adhesives, and web spray adhesives.

  • Membrane filtration means a pressure or vacuum driven separation process in which particulate matter larger than 1 micrometer is rejected by an engineered barrier, primarily through a size-exclusion mechanism, and which has a measurable removal efficiency of a target organism that can be verified through the application of a direct integrity test. This definition includes the common membrane technologies of microfiltration, ultrafiltration, nanofiltration, and reverse osmosis.

  • Motorized bicycle means any vehicle that either has two tandem wheels or one wheel in the front and two wheels in the rear, that is capable of being pedaled, and that is equipped with a helper motor of not more than fifty cubic centimeters piston displacement that produces no more than one brake horsepower and is capable of propelling the vehicle at a speed of no greater than twenty miles per hour on a level surface.

  • Cartridge means a pleated or surface-type filter component with fixed dimensions that is designed to remove suspended particles from water flowing through the filter.