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.
Sample 1Sample 2Sample 3
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 scum shall be removed using positive displacement pumps.

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

  • I believe that it is essential that my children and all children receive a complete and equitable education.

  • The high cost of the digital transition and the low means of African states will urge most of them to run again for external financing sources.

  • Primary sludge is anaerobically digested and waste activated sludge is thickened and aerobically digested.

  • Figure 32nd Generation ATAD Schematic (Thermal Process) JET AERATION MANIFOLDJET MOTIVE PUMPBLOWERFOAM CONE EDUCTORFOAM LAYER SYSTEM DESIGN CRITERIA The Three Rivers ATAD is designed to treat three sources of waste solids listed below and in Table 1: • Primary sludge at 4.5% TS• TWAS thickened in a rotary drum thickener at 5% Ts• Septage, screened and degritted in a combination septage treatment station.• The sludges are combined in a common well and decanted to remove excess water.

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

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


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.

  • Aboveground tank means a device meeting the definition of tank that is situated in such a way that the entire surface area of the tank is completely above the plane of the adjacent surrounding surface and the entire surface area of the tank (including the tank bottom) is able to be visually inspected.

  • Analytical x-ray system means a group of components utilizing x-rays to determine the elemental composition or to examine the microstructure of materials.

  • 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.

  • 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.

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

  • Nuclear pharmacy means a pharmacy providing radio-pharmaceutical 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.

  • Modular building manufacturer means a person or corporation who owns or operates a

  • Disinfectant means any oxidant, including but not limited to chlorine, chlorine dioxide, chloramines, and ozone added to water in any part of the treatment or distribution process, that is intended to kill or inactivate pathogenic microorganisms.

  • Water source means any faucet used to obtain water for drinking or food preparation for day care operations. Water sources include, but are not limited to, sinks, bathtubs, hoses, drinking fountains, bubblers, and refrigerator or freezer water or ice dispensers.