Near-zero-release treatment system and method for high concentrated organic wastewater

A near-zero-release process system for high concentrated organic wastewater, comprising:

• a wastewater transport unit, a reaction unit, an oxygen supplying unit and a reprocessing unit, wherein
• the wastewater transport unit comprises a sludge tank (1) and a sludge buffer tank (3), wherein a homogeneous emulsification pump (2) is on a pipe between the sludge tank (1) and the sludge buffer tank (3);
• the reaction unit comprises a heat exchanger (5) and a tubular reactor (6);
• a high-pressure variable-frequency plunger pump (4) is on a pipe between the sludge buffer tank (3) and the heat exchanger (5);
• an outlet of a pipe side of the heat exchanger (5) is connected to an inlet of the tubular reactor (6);
• an outlet of the tubular reactor (6) is connected to an inlet of a shell side of the heat exchanger (5);
• the oxygen supplying unit is connected to the tubular reactor (6);
• the reprocessing unit comprises a pressure relief device (7), a self-cleaning filter (8), a gas liquid separator (9), a MVR (mechanical vapor recompression) crystallization unit (10) and an advanced treatment unit (11);
• wherein an outlet of the shell side of the heat exchanger (5) is connected to an inlet of the pressure relief device (7);
• an outlet of the pressure relief device (7) is connected to an inlet of the self-cleaning filter (8);
• an outlet of a clean fluid of the self-cleaning filter (8) is connected to the gas liquid separator (9);
• an air vent is set on a top of the gas liquid separator (9);
• a liquid outlet is set on a bottom of the gas liquid separator (9);
• the liquid outlet on the bottom of the gas liquid separator (9) is connected to an inlet of the MVR crystallization unit (10);
• an outlet of the MVR crystallization unit (10) is connected to an inlet of the advanced treatment unit.