Integrated separation unit for microplastics in the coastal sediments and collection method of microplastics

An integrated separation unit for microplastics in the coastal sediments, wherein the unit comprises:

• a holder (A), a separation cylinder (B), a collection bottle (C), a central baffle plate (1), a baffle plate control knob (2), a stirring propeller (3), a motor, a cylinder switch, a filtration screen (4), a welding nozzle (5), a filter membrane and a vacuum pump;
• the holder (A) is connected to one end of the separation cylinder (B) through screw threads, and the other end of the separation cylinder (B) is connected to the collection bottle (C) through a bayonet;
• the inner bottom of the separation cylinder (B) is provided with a stirring propeller (3), the stirring propeller (3) is connected to a motor, the cylinder switch is arranged on the outer wall of the separation cylinder (B), and the motor is connected with the cylinder switch;
• the central baffle plate (1) is arranged in the inner center of the separation cylinder, the central baffle plate (1) is circular, a rotating shaft is arranged along one diameter of the central baffle plate (1), one end of the rotating shaft passes through the separation cylinder (B) and connected with the baffle plate control knob (2);
• a filtration screen (4) is arranged at the neck of the collection bottle (C), and the filtration screen (4) is provided with a filter membrane, a welding nozzle (5) is arranged at the lower side of the collection bottle (C), and the welding nozzle (5) is connected with the vacuum pump.