Primary sludge definition

Primary sludge means sewage sludge removed from primary settling tanks designed in accordance with this chapter that is readily thickened by gravity thickeners designed in accordance with this chapter.
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Primary sludge means sewage sludge removed from primary settling tanks that is readily thickened by gravity thickeners.
Sample 1Sample 2Sample 3
Primary sludge means sewage sludge removed from primary settling tanks designed in accordance with
Sample 1

Examples of Primary sludge in a sentence

  • Primary sludge and thickened waste activated sludge are combined and pumped through a force main to the SOCWA RTP for treatment and disposal.

  • Primary sludge removal was found to be missing from the WWTP in Santa Catarina Palopó and is thus not considered.

  • Primary sludge of 154 m3/d (at 3% solids) together with waste activated sludge of 180 m3/d (at 3% solids) is routed to the anaerobic digester.

  • Primary sludge that settles to the bottom of the clarifiers is collected and pumped out of each clarifier to the gravity thickeners.

  • Primary sludge is thickened by gravity and excess sludge is thickened by centrifuge.

  • Primary sludge and thickened WAS are pumped to the anaerobic digesters for stabilization and solids reduction.

  • Primary sludge generally digests more completely than waste activated (secondary) sludge and gives a higher volatile solids reduction.

  • Primary sludge contains numerous readily available organics that would induce a rapid growth of biomass if treated aerobically.

  • Primary sludge is collected in septic tanks located at individual properties throughout the service area.

  • Primary sludge, excess biomass from the secondary treatment and backwash water from PSF will be collected in the sludge sump.


More Definitions of Primary sludge

Primary sludge means the solid Organic Waste generated in the pre-treatment step of the Wastewater Treatment System;
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Related to Primary sludge

  • primary school means a school classified as a primary school or an intermediate school under the Education and Training Act 2020.

  • 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.

  • Primary Source means the Screen Page specified as such in the applicable Pricing Supplement and (in the case of any Screen Page provided by any information service other than the Reuters Monitor Money Rates Service (“Reuters”)) agreed to by the Agent Bank;

  • 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).

  • 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.

  • Secondary school means a nonprofit institutional day or residential school including a public secondary charter school that provides secondary education for grades 9-12.

  • Grease means an organic substance recoverable by procedures set forth in "Standard Methods" and includes but is not limited to hydrocarbons, esters, fats, oils, waxes and high molecular carboxylic acids;

  • chemical tanker means a ship constructed or adapted and used for the carriage in bulk of any liquid product listed in chapter 17 of the International Bulk Chemical Code;

  • 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.

  • Drug paraphernalia means all equipment, products, and materials of any kind, which are used for injecting, ingesting, inhaling or otherwise introducing a drug into the human body. This includes, but is not limited to, all equipment, products and materials prohibited or controlled by State or Federal laws.

  • Submerged fill pipe means any fill pipe the discharge opening of which is entirely submerged when the liquid level is six inches above the bottom of the tank, or when applied to a tank which is loaded from the side, shall mean any fill pipe the discharge opening of which is entirely submerged when the liquid level is eighteen inches above the bottom of the tank.

  • Uppermost aquifer means the geologic formation nearest the natural ground surface that is an aquifer, as well as lower aquifers that are hydraulically interconnected with this aquifer within the facility's property boundary.

  • Cabinet x-ray system means an x-ray system with the x-ray tube installed in an enclosure independent of existing architectural structures except the floor on which it may be placed. The cabinet x-ray system is intended to contain at least that portion of a material being irradiated, provide radiation attenuation, and exclude personnel from its interior during generation of radiation. Included are all x-ray systems designed primarily for the inspection of carry-on baggage at airline, railroad, and bus terminals, and in similar facilities. An x-ray tube used within a shielded part of a building, or x-ray equipment that may temporarily or occasionally incorporate portable shielding, is not considered a cabinet x-ray system.

  • Chemical Storage Facility means a building, portion of a building, or exterior area adjacent to a building used for the storage of any chemical or chemically reactive products.

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

  • Pump spray means a packaging system in which the product ingredients within the container are not under pressure and in which the product is expelled only while a pumping action is applied to a button, trigger or other actuator.

  • Firefighter means any regular, paid or volunteer, member of a lawfully constituted fire department of a municipal corporation, township, fire district, or village.

  • Aliquot means a fractional part of a specimen used for testing. It is taken as a sample representing the whole specimen.

  • Sewage sludge fee weight means the weight of sewage sludge, in dry U.S. tons, excluding admixtures such as liming materials or bulking agents. Annual sewage sludge fees, as per section 3745.11(Y) of the Ohio Revised Code, are based on the reported sludge fee weight for the most recent calendar year.

  • Tailings means material rejected from a mill after most of the valuable minerals have been extracted.

  • Small quantity generator means a generator who generates less than 1000 kg of hazardous waste in a calendar month.

  • Geothermal fluid means water in any form at temperatures greater than 120

  • Tanks has the meaning set forth in Section 4.12(b).

  • Terminal means the EMV-enabled machine, terminal or other hardware device you obtain from NCR Voyix as an item of Hardware to use in connection with the Service to make the Offering to the Service User and to access the EMV PSP Service.

  • Hydraulic lift tank means a tank holding hydraulic fluid for a closed-loop mechanical system that uses compressed air or hydraulic fluid to operate lifts, elevators, and other similar devices.

  • Engine degreaser means a cleaning product designed to remove grease, grime, oil and other contaminants from the external surfaces of engines and other mechanical parts.