Wastewater Evaporators FAQ's & Info

How do you evaporate the wastewater? Like boiling water on a stove, the steam rises and the minerals and food stay in the pot. It's that easy. Dirt, heavy metals, grease, oil and other contaminates don't evaporate. They remain in the evaporator as sludge.

How do you clean out the sludge? First remove the turntable, screens and chip tray (option). If the wastewater reduces by up to 95%, the residual solid slurry will drain out of the machine through the drain port. If you concentrate the solids until you have removed all of the water, the sludge will be brick hard and almost impossible to remove. The thermostat controlling evaporation shuts the machine off at the 95% wastewater reduction level for easy cleanout.

How do I know what size evaporator to purchase? To properly size a Hydro-Vap™ evaporator, the daily production of waste should be documented. The evaporator capacity should be 1.5 times the actual daily waste stream volume. Using 1.5 times as a multiplier accommodates periodic evaporator maintenance, clean out and inspection within a normal shift.

Why do I have to do an Material Stream Test? So Hydro-Blast, Inc. can assist in the sizing and help determine the appropriate construction materials for the wetted parts, a Material Stream Assessment (MSA) must be done for all of your waste streams. An MSA will characterize the waste stream with detailed information such as the presence of heavy metals, suspended and dissolved solids, VOCs, chlorides, etc. This information can help determine if pretreatment prior to evaporation will be required.

Is it safe to evaporate the wastewater? Many waste streams are mainly water and the list of what you can evaporate is almost endless. Some common waste streams currently being evaporated include:

·          aqueous cleaning solution

·          rinse water

·          water based machining coolants

·          acid and caustic baths

·          air compressor condensation

·          floor scrubber water

·          mop bucket water, etc.

Hydro-Blast, Inc. recommends that you have a Material Stream Assessment completed on all of your waste streams before evaporating wastewater.

Do you need a permit to evaporate the wastewater? The need to permit evaporators varies from state to state and from local and county air sheds. You will need to contact your local Air Quality Control Board to see if permitting is necessary. A Material Stream Assessments (MSA) helps in the permitting process if required.