Method, process and apparatus for the very low temperature evaporation system

A low temperature evaporation system for extracting water from a liquid at a temperature between 5° C. to 80° C., comprising:

• a plate heat exchanger;
• a direct contact heater or stripper column;
• a circulation pump;
• a condensate pump;
• a distribution assembly;
• a heat exchanger module comprising a plurality of heat exchanger plate packs;
• a mechanical vapor compression system comprising one or more compressors;
• and a forced circulation evaporator or concentrator;
• wherein:
• the plate heat exchanger is configured to receive an intake of said a liquid from a feed tank through a feed pump and increase temperature of the liquid;
• the direct contact heater is configured to receive the heated liquid from the plate heat exchanger and increase temperature of the liquid;
• the circulation pump is configured to transport the heated liquid from heat exchanger plate packs of the heat exchanger module to the distribution assembly;
• the condensate pump is configured to transport the condensate of condensate tank collected from heat exchanger module and forced circulation evaporator to the plate heat exchanger;
• the distribution assembly is configured to distribute the heated liquid over the heat exchanger plate packs of the heat exchanger module;
• the heat exchanger module is configured to cause water in the heated liquid to evaporate as a vapor and condensate as a water, so that the heated liquid concentrates;
• the mechanical vapor compression system is configured to compress the vapor or non-condensate gases (NCG), and send the compressed vapor and NCG to the heat exchanger module;
• forced circulation evaporator and direct contact heater for heating, evaporation and concentration of the heated liquid;
• and the forced circulation evaporator is configured to collect the concentrated liquid from heat exchanger module, and feed the concentrated liquid to the heat exchanger of forced circulation evaporator through the circulation pump for further evaporation of the concentrated liquid, or release the concentrated liquid for further drying;
• wherein successive evaporations and concentrations of the liquid under vacuum using the compressed vapor or NCG result in recovery of clean water from effluent or wastewater;
• and wherein the low temperature evaporation system is configured to extract the water from the liquid at temperature between 5° C. to 80° C.