Clarifier


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clarifier

[′klar·ə‚fī·ər]
(engineering)
A device for filtering a liquid.

Clarifier

 

an installation for water purification in a water-supply system. It is used to remove suspended matter and colloidal impurities from water by passing the water upward through a layer of flocculant sediment, which was previously produced by a coagulant. The rate of upward flow in the clarification zone is controlled and ranges from 0.6 mm/sec (relatively clear, low-turbidity water) to 1.4 mm/sec (high-turbidity water), depending on the impurities present. The sediment layer in the clarifier must be at least 2 m thick, and the protective layer of clarified water above it must be at least 1.5 m deep. The excess of sediment is removed through receiving ports or pipes and passes into a sediment compactor, whose volume is 20–40 percent of the clarifier volume.

References in periodicals archive ?
The existing secondary clarifier mechanism also is being replaced and the peripheral feed clarifier retrofitted to a center-feed design.
The development of compact and efficient unit operations such as influent clarifiers, demineralizers, membrane separation equipment, and BOD reduction facilities all provide "more for less" to the paper industry.
Before a clarifier was brought back on-line, the area where the splitter box connects with the discharge elbow was cleaned and sealed to improve resistance to corrosive wastewater being distributed from the box.
Long basins called primary clarifiers then remove solid particles that remain.
Rising down-time due to the fact that the clarifier was the only one operational within the plant, thus requiring softening plant shut down to perform maintenance on the clarifier.
Notes: inspection of clarifier drives will be held on october 26, 2017 from 10:00 am to 1:00 pm at sewer plant, 250a shore road, greenwich, ct 06830.
Compact and cost-effective, the clarifier benefits from a fully integrated dewatering system, which ensures removal of large particles and solids from the company's 24/7 operation, in which it processes large volumes of mackerel, pilchards, cuttlefish and flatfish.
The PP resin must contain at least 25 ppm of aluminum catalyst residue for the clarifier to work effectively.
At the Toronto, Ontario, Main Treatment Plant, solids recycle stream loading affected primary clarifier performance, primary and secondary solids generation, and aeration-system loading rates and oxygen demand.
In addition, the company has plans to replace the wastewater system's existing clarifier.
Tenders are invited for upgrading of a 52~ clarifier to a center feed design, including installation of a new clarifier mechanism, drive, 20" feed pipe, capping influent channel, miscellaneous piping modifications; and all materials, equipment, services, and construction inherent to the work.