A high-salt wastewater air powered evaporation device (20), operating at ambient temperature or slightly higher than the ambient temperature, comprising:
- a steel structure frame (1) for the device (20), comprising:
- a lifting platform (2) and a tray (14), wherein the tray is mounted on the lifting platform;
- an air-powered water heater device, comprising;
- an air inlet (5) and a water inlet (9) mounted on the tray (14), wherein air distribution pipe(s) (6) and water distribution pipe(s) (7) are arranged above the air inlet (5), and wherein the air distribution pipe(s) (6) distribute air from the air inlet (5) and the water distribution pipe(s) (7) are in communication with air from the air inlet (5) via a heat exchanger (22);
- an air heater, wherein the air heater produces hot air;
- and
- an air blower, wherein the air blower either blasts the hot air into the air inlet (5), or, the air blower blasts air, utilizing the thermal energy of the air as energy used for evaporation, without using steam or electric heating, thus providing a low cost and low energy consumption;
- a concentrated liquid waste collecting groove (4) placed above the air inlet (5),
- wherein concentrated solution outlets on side walls of the concentrated liquid waste collecting groove (4) are connected to a concentrated liquid outlet (10) for collecting concentrated liquid waste;
- a crystallization tank (30),
- wherein a plurality of mounting holes are defined in the bottom of the concentrated liquid waste collecting groove (4), and the mounting holes are provided with air distribution pipe(s) (6)
- wherein the air distribution pipe(s) (6) are connected to the air inlets (5), and the top of the air distribution pipe(s) (6) is provided with an atomizer (8),
- wherein the atomizer (8) is in communication with the water distribution pipe(s) (7) and the water inlet (9);
- a plurality of nested tube column tubes (33) in a nested tube column (3),
- wherein each nested column tube (33) is vertically installed outside the air distributing pipes (6), and each nested column tube (33) has no direct contact with each air distribution pipe(s) (6),
- wherein the nested column tubes and nested tube column extends to the top of the steel structure frame (1), wherein a gas collecting cover (12) is fixed at a top end of the steel structure frame,
- wherein the gas collecting cover (12) is in communication with the nested tube column (3), and the gas collecting cover (12) is provided with an exhaust port (13) for collecting gas;
- a demister (11) is disposed inside the cover (12);
- and
- a gas collection tank (31) fixed on the top of the steel structure frame (1), operably coupled to the nested column tubes and the nested tube column (3) and installed with an exhaust outlet(s).