A liquid concentrator having an evaporator assembly and a cyclonic separator includes features designed to improve the performance of the liquid concentrator. A settling chamber is separated from a sump of the cyclonic separator. A liquid inlet opening into a mixing chamber of the evaporator injects
A liquid concentrator having an evaporator assembly and a cyclonic separator includes features designed to improve the performance of the liquid concentrator. A settling chamber is separated from a sump of the cyclonic separator. A liquid inlet opening into a mixing chamber of the evaporator injects wastewater at low pressures. Features to aid in the cleaning of the liquid concentrator include easy open doors and clean water injection ports for cleaning interior portions of the liquid concentrator. In one feature a settling tank is disposed below the cyclonic separator and has a width that is larger than the width of the cyclonic separator. In another variation, the cyclonic separator has a tubular body with an interior that is substantially unobstructed between an inlet from the evaporator assembly and an exhaust outlet. In yet another variation, the cyclonic separator has an upper chamber that is separated from a lower chamber.
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1. A liquid concentrator comprising: an evaporator assembly comprising a mixing chamber arranged to mix wastewater with gas and evaporate liquids from the wastewater, a wastewater inlet operatively arranged to supply wastewater to the mixing chamber, and a gas inlet operatively arranged to supply a
1. A liquid concentrator comprising: an evaporator assembly comprising a mixing chamber arranged to mix wastewater with gas and evaporate liquids from the wastewater, a wastewater inlet operatively arranged to supply wastewater to the mixing chamber, and a gas inlet operatively arranged to supply a flow of gas the mixing chamber; anda cyclonic separator comprising a tubular body having an inlet into a lower portion, the inlet operatively connected with the evaporator assembly to receive the mixed wastewater and gas and the lower portion arranged to centrifugally separate the gas from solids and the wastewater, an exhaust outlet proximate to a top of the tubular body arranged to exhaust the gas from the tubular body, and a fan arranged to draw the mixed wastewater and gas into the lower portion;wherein the tubular body is substantially unobstructed between the inlet and the exhaust outlet. 2. The liquid concentrator of claim 1, wherein the fan is disposed inside an upper portion of the tubular body. 3. The liquid concentrator of claim 1, wherein the fan is disposed in the exhaust outlet. 4. The liquid concentrator of claim 1, wherein the fan is located outside of the cyclonic separator, an outlet of the fan is operatively connected with an interior of the cyclonic separator by a duct, and an inlet of the fan draws air from an exterior of the cyclonic separator. 5. The liquid concentrator of claim 1, wherein the tubular body has a straight axis oriented substantially vertically. 6. The liquid concentrator of claim 1, wherein the evaporator assembly comprises a mixing chamber arranged to receive the wastewater and gas and an evaporator section connected with the mixing chamber. 7. The liquid concentrator of claim 1, wherein the evaporator assembly comprises a venturi evaporator. 8. The liquid concentrator of claim 1, comprising a sump disposed below the inlet in the lower portion of the tubular body, the sump arranged to collect wastewater and solids separated from the gas, and a recirculation conduit connecting the sump and the evaporator assembly, wherein the recirculation conduit transports wastewater from the sump to the evaporator assembly. 9. The liquid concentrator of claim 1, further comprising: a clean water injection port arranged to spray clean water against an interior surface of the tubular body of the cyclonic separator, wherein clean water injected through the water injection port washes the interior surface to prevent build up of scale and/or sludge on the thereon. 10. A liquid concentrator comprising: an evaporator assembly arranged to mix wastewater with gas and evaporate liquids from the wastewater, a wastewater inlet operatively arranged to supply wastewater to the evaporator assembly, and a gas inlet operatively arranged to supply a flow of gas the evaporator assembly;a cyclonic separator comprising a body that is vertically oriented, wherein the body defines a lower chamber and an upper chamber disposed directly above the upper chamber, the lower chamber having an inlet operatively connected to the evaporator assembly to receive the mixed wastewater and gas and to separate the gas from solids and the wastewater, the upper chamber having an exhaust outlet arranged to exhaust the gas, a fan arranged to draw the mixed wastewater and gas into the lower chamber, and a divider wall that extends across the tubular body, wherein the divider wall hydraulically separates the upper chamber from the lower chamber to prevent liquids and solids from falling from the upper chamber down into the lower chamber; anda duct arranged to allow gas flow from the lower chamber to the upper chamber. 11. The liquid concentrator of claim 10, further comprising a first sump disposed at the bottom of the lower chamber and a second sump disposed at the bottom of the upper chamber. 12. The liquid concentrator of claim 11, wherein the body of the cyclonic separator comprises a tubular body. 13. The liquid concentrator of claim 12, wherein the duct has a first end that opens into the lower chamber, a second end that opens into the upper chamber, and at least one curved section between the first and second ends that extends around the divider wall. 14. The liquid concentrator of claim 13, wherein the duct has a substantially U-shaped axis located on an exterior side of the tubular body. 15. The liquid concentrator of claim 13, wherein the first end of the duct is disposed above the first sump and the second end of the duct is disposed above the second sump.
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