3 replies to this topic

[DougB]

Hi all,

I have a tank of water with very high concentrations of sodium chloride and sodium hypochlorite. The was is blow down water from a wet scrubber and packed tower. We typically evaporate the water and let the tank dry. As you can imagine, that is a very long process to dry the tank and usually we form a salt dome and have a large slug of trapped water. Then we go in the tank and dig out the salt.

During the evaporation process, the salt begins to precipitate out and form along the sides and bottom of the tank, thus becoming supersaturated.

Does anyone have any knowledge or experience with filtering this type of water (supersaturated) to remove the salt precipitate?

[bmk]

Hi all,

I have a tank of water with very high concentrations of sodium chloride and sodium hypochlorite. The was is blow down water from a wet scrubber and packed tower. We typically evaporate the water and let the tank dry. As you can imagine, that is a very long process to dry the tank and usually we form a salt dome and have a large slug of trapped water. Then we go in the tank and dig out the salt.

During the evaporation process, the salt begins to precipitate out and form along the sides and bottom of the tank, thus becoming supersaturated.

Does anyone have any knowledge or experience with filtering this type of water (supersaturated) to remove the salt precipitate?

Dear DougB,
I suggest that a basket centrifuge will serve the purpose of filtering out the precipitated salt at saturation point. You can estimate the amount of salt formed per shift and select the centrifuge with its solid handling capacity. ---- bmkhare,India

[rk52]

Hi all,

I have a tank of water with very high concentrations of sodium chloride and sodium hypochlorite. The was is blow down water from a wet scrubber and packed tower. We typically evaporate the water and let the tank dry. As you can imagine, that is a very long process to dry the tank and usually we form a salt dome and have a large slug of trapped water. Then we go in the tank and dig out the salt.

During the evaporation process, the salt begins to precipitate out and form along the sides and bottom of the tank, thus becoming supersaturated.

Does anyone have any knowledge or experience with filtering this type of water (supersaturated) to remove the salt precipitate?

Can you further describe your process along with concentrations of salts at various stages

[riven]

Reverse osmosis is sometimes used to remove salts from boiler water. It could have an application here but concentration may be too high.