Waste liquid recovery system for large storage tank

A waste liquid recovery system for a large storage tank, comprising a control terminal, a transition tank, a water storage tank, a water-ring vacuum pump, a water mist separator, a high-pressure water spray apparatus, a solid waste collecting and weighing apparatus, and a sewage pump, wherein

• a water mist inlet port of the water mist separator is connected with a negative-pressure suction port of the transition tank, a liquid outlet port of the water mist separator is connected to a liquid return port located below the negative-pressure suction port, of the transition tank, and a suction port of the water-ring vacuum pump is connected to an exhaust port of the water mist separator, and used for enabling the transition tank to generate a negative pressure;
• a waste liquid recovery port of the transition tank is connected with one end of a recovery pipeline, and the other end of the recovery pipeline is used for being arranged at the lowest point of waste water collection in the radioactive storage tank;
• the water storage tank is provided with a ventilation valve, a solid-liquid separator, and a rotary stirring apparatus, the solid-liquid separator is arranged at an upper part in the water storage tank, the rotary stirring apparatus is arranged at the bottom in the water storage tank, and the ventilation valve is arranged above the water storage tank and communicates with the water storage tank;
• the transition tank is located above the water storage tank, and connected to an inlet port of the solid-liquid separator through a pipeline with a switching valve;
• a liquid drainage port of the solid-liquid separator is connected into the water storage tank, a solid waste discharge port of the solid-liquid separator is connected to the solid waste collecting and weighing apparatus, and a high-pressure water spray head of the high-pressure water spray apparatus faces the bottom in the water storage tank;
• a waste water outlet port of the water storage tank is connected with the sewage pump through a pipeline with a sewage valve;
• the sewage pump, the sewage valve, the solid waste collecting and weighing apparatus, the high-pressure water spray apparatus, the solid-liquid separator, the rotary stirring apparatus, the ventilation valve, the switching valve, the water-ring vacuum pump and the water mist separator are all electrically connected with the control terminal;
• a connection pipeline between the liquid outlet port of the water mist separator and the transition tank is provided with an emptying valve, and the emptying valve is electrically connected with the control terminal;
• the water storage tank is provided with a first liquid level gauge which is electrically connected with the control terminal, and the first liquid level gauge (2) is used for monitoring a liquid level in the water storage tank;
• the transition tank is provided with a second liquid level gauge which is electrically connected with the control terminal, and the second liquid level gauge is used for monitoring a liquid level in the transition tank;
• an outlet port of the sewage pump is connected to a liquid waste collection box, the liquid waste collection box is provided with a third liquid level gauge which is electrically connected with the control terminal, and the third liquid level gauge is used for monitoring a liquid level in the liquid waste collection box;
• the solid waste collecting and weighing apparatus comprises a weight detector and a solid waste collection box placed on the weight detector, the weight detector is electrically connected with the control terminal, and a solid waste discharge port of the solid-liquid separator is connected to the solid waste collection box;
• and
• a flow meter is arranged at an outlet side of the sewage pump, a mud concentration detector is arranged in the water storage tank, and the mud concentration detector and the flow meter are electrically connected with the control terminal.