Stratification Issues in Water Storage Tanks

Written by Thom Tackman, Kasco Licensed Water Operator

As spring and summer time approaches, saved water movement and temperature will steadily enhance in all water storage tanks whether or not they’re under floor or elevated. Improve within the water temperature sometimes ends in chemical and thermal stratification together with a rise in biofilm progress and a lower within the chlorine residual. The solar warms the skin of the storage tank and the warmth inside will increase the corrosion of metallic above the water line within the headspace of the storage tank. The system operator can’t management the daylight or ambient temperature however with a strong energetic mixer, they’ll get rid of chemical and thermal stratification and scale back headspace temperature.

When water within the tank is totally blended, the blending motion from an energetic mixer will convey the colder and brisker water to the highest of the tank doubtlessly dropping the temperature, in addition to utterly eliminating chemical stratification. The energetic mixer will assist scale back biofilm build-up that will increase TTHM and HAA5 ranges inside the tank and consumes the chlorine residual.

And not using a mixer, thermal stratification will create a separation of the hotter water from the colder water and permit for a temperature separation that may be seen externally on a water storage tank. Temperature testing can affirm thermal stratification. Chemical stratification is one other concern that may be verified by sampling the highest and backside of a storage tank or by utilizing a sump pump (that’s correctly disinfected) to confirm the chlorine residual at a number of ranges inside a water storage tank.

Thermocline Line Seen
on Exterior of Tank
Thermocline Line Eradicated with
Kasco’s CertiSafe Tank Mixer

Kasco’s CertiSafe™ Tank Mixer is an environment friendly and efficient energetic tank mixing answer that can maintain water tanks completely blended from high to backside. These mixers have proven to cut back chlorine stratification to a 0.2 PPM distinction within the full quantity of the water storage tank.

“Our joint buyer case research affirm that the addition of a Kasco CertiSafe™ Mixer is by far essentially the most environment friendly and cost-effective manner to enhance water high quality in a water storage tank,” stated Lucy Allen, Kasco’s CertiSafe™ Product Supervisor.

Thermal or chemical stratification in water tanks is sort of a certainty with out the assistance of a robust, energetic mixer. Maintain your ingesting water wholesome and storage tank construction protected by using a mixing methodology that eliminates any chance for stratification.

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