7/31/2019 Watermark Clarifier 2-Page Brochure

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7/31/2019 Watermark Clarifier 2-Page Brochure

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M.W. WATERMARK L.L.C.4660 136th Avenue Holland, MI 49424 ph 616.399.8850

fax 616.399.8860www.mwwatermark.com

M.W. WATERMARK, L.L.C. Resources For All of Your Water & Wastewater Needs

Service Experience Expertise Savings

Principles ofSlant Plate Clarifiers

Options

Mixers for Floc / Flash Tanks

Coal-Tar Epoxy interior coating

Feed Pumps

Custom Design

Sludge Removal Pumps

A particle carried forward by the velocity of the liquid flow must settle ata rate that allows it to reach the bottom before passing through theclarifier. Thus, particles beginning at a point "A" must traverse someroute lying between AB and AB' in order to avoid being carried over theoutlet.

If V is the horizontal velocity of the liquid, S the solids particle verticalsettling velocity, L the length of the settling device, and D its depth, thenparticles entering at point A will settle to the bottom of the device only ifV does not exceed: S(L/D)

Since Vmax / S = L / D then, Vmax = S (L / D)

Therefore, the velocity at which a horizontal clarifying device may beoperated successfully is directly proportional to its length and inverselyproportional to its depth.

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System Design

Influent is fed into the clarifier downward through a feed

channel between the laminar plate sections. As thevelocity of the influent decreases near the bottom of thechannel, larger particulate settles to the clarifier bottom.

The influent enters the lower area of the laminar platesections from the bottom of the influent channel. Theliquid is then distributed across the entire width of theplates, and flows upward under laminar flow conditions.Particulates settle onto the plates and slide down to theclarifier bottom. The liquid exits the plate sections overweirs at the top that are designed to develop adequate

pressure drop to maintain balanced flow through theplates. The liquid then flows into effluent channels, andout of the clarifier.