The invention discloses microwave repair equipment for organic contaminated soil. The equipment comprises a charging and discharging system, a microwave heating system, a deduster, a tail gas treating system and a control system center, wherein, the charging and discharging system is arranged in the microwave heating system, and the microwave heating system, the deduster and the tail gas treatingsystem are connected sequentially. The microwave heating system comprises a first microwave generator and a cylindrical oven body, the inner layer of the cylindrical oven body is a silicon carbide layer, and the external layer of the cylindrical oven body is an alumina silicate heat-insulation layer; the tail gas treating system comprises a microwave catalytic pyrolysis tower and an adsorption tower, the microwave catalytic pyrolysis tower comprises a cylindrical alumina silicate insulation shell, multilayer silicon carbide porous filter boards and a catalyst, the multilayer silicon carbide porous filter boards are vertically inserted in the cylindrical alumina silicate insulation shell at equal distance, and the catalyst is arranged on the silicon carbide porous filter boards. The microwave repair equipment provided in the invention has the advantages of strong capability in treating organic contaminated soil, thorough treatment of tail gas, no secondary pollution, high efficiency, energy conservation and easy operation and control.

Microwave repair equipment for organic contaminated soil

Computer-controlled automatic liquid micro-extraction device

The invention discloses a microwave remediation method for a polycyclic aromatic hydrocarbon contaminated site. The method comprises the following steps: air-drying soil contaminated by polycyclic aromatic hydrocarbon and total petroleum hydrocarbon under natural conditions, ensuring that the moisture content of the air-dried soil is 10-25%, screening the air-dried soil, removing big stones and concrete blocks to obtain the to-be-processed soil, mixing certain amount of a microwave absorbent and the to-be-processed soil evenly, putting the to-be-processed soil mixed with the microwave absorbent into a microwave processing device, starting a microwave generator of the microwave processing device, ensuring that the temperature in the microwave processing device reaches a preset temperature, and carrying out microwave processing on the to-be-processed soil for a period of time. The method provided by the application of the invention is simple and easy in operation, short in operation time and high in processing efficiency, is removable, safe and environment-friendly, more importantly, the yield of tail gas in the processing stage is low, the purifying cost is low, and a novel effective method is provided for thermal remediation of the contaminated soil.

Microwave remediation method for polycyclic aromatic hydrocarbon contaminated site

The present disclosure relates to a volatile organic compound removal system using microwaves, which has a structure in which an adsorption filter and an oxidation filter for oxidizing volatile organic compounds desorbed from the adsorption filter are arranged successively in a flowing passage in the atmosphere which generally contains volatile organic compounds, and which heats the adsorption filter and the oxidation filter respectively by using microwaves. and the system comprises: a first body part having a first inlet and a first outlet and having the flowing passage formed therein; a first adsorption filter and a first oxidation filter provided in the first body part and provided to allow gases flowing in the flowing passage to pass through successively in the direction from the first inlet to the first outlet; and a plurality of first magnetrons provided, at one side of the first body part, so as to correspond to the first adsorption filter and the first oxidation filter respectively, and selectively irradiating microwaves to the first adsorption filter and the first oxidation filter.

Volatile organic compound removal system using microwaves

Contaminant-containing soil can be remediated by subjecting the soil to microwave irradiation to heat the soil to a combustion temperature of from 150° C. to 1200° C. to initiate combustion. A target amount of the contaminant in the soil is destroyed. An oxidizer gas can be flowed through the soil using a gas blower and at least one gas injection line and controlled at a rate such that a self-sustaining smoldering combustion front is formed that moves through the soil. A microwave absorber additive can be added to the soil to accelerate the heating of the soil. At least one waveguide connected to a source of microwave energy directs microwaves into the soil.

Systems and methods for thermal treatment of contaminated material

The utility model provides a computer-controlled automatic micro-extraction device of liquid phase, which comprises a computer, an injection pump, a switching valve, a hollow fiber membrane, a stirring device, a peristaltic pump and an ultrasound device. The switching valve is provided at least four connectors, the injection pump is connected with a first connector of the switching valve through a connection pipe, a receptor-phase solution bottle and a sample feeding bottle are respectively connected with other connectors of the switching valve through connection pipes, and the hollow fiber membrane is U-shaped. During use, two ends of the hollow fiber membrane are respectively connected with other connectors of the switching valve through the connection pipes. The U-shaped bottom of the hollow fiber membrane is inserted in a liquid sample bottle arranged on the stirring device. One end of a liquid pick-up pipe is inserted in the liquid sample bottle, the other end of the liquid pick-up pipe is connected with one end of the peristaltic pump, and the other end of the peristaltic pump is arranged in a solid sample bottle placed in the ultrasound device in connection mode. The computer is connected with the injection pump and a microprocessor arranged in the switching vale through serial interfaces. The computer-controlled automatic micro-extraction device is high in automation degree, convenient to operate, good in repeatability and easy to be connected with detection instruments for use.

Computer-controlled automatic micro-extraction device of liquid phase

The utility model discloses a microwave remediation device for organically-polluted soil, which comprises a material inlet and outlet system, a microwave heating system, a deduster, a tail gas disposal system and a control system center, wherein the material inlet and outlet system is arranged in the microwave heating system, and the microwave heating system, the deduster and the tail gas disposal system are sequentially connected The microwave heating system comprises a first microwave generator and a cylindrical furnace body, the inner layer of the cylindrical furnace body is a silicon carbide layer, and the outer layer of the cylindrical furnace body is an aluminum silicate thermal insulation layer The tail gas disposal system comprises a microwave catalysis pyrolysis tower and an adsorption tower, the microwave catalysis pyrolysis tower comprises a cylindrical aluminum silicate thermal insulation casing, multiple layers of silicon carbide porous filter boards and catalysts, the multiple layers of silicon carbide porous filter boards are vertically inserted on the cylindrical aluminum silicate thermal insulation casing at the same intervals, and the catalyst is arranged on the silicon carbide porous filter boards The microwave remediation device for organically-polluted soil has the advantages of being high in organically-polluted soil disposal capacity, thorough in tail gas disposal, efficient, energy-saving and easy to operate and control and generating no secondary pollution

Microwave remediation device for organically-polluted soil

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Microwave repair equipment for organic contaminated soil

Computer-controlled automatic liquid micro-extraction device

Computer-controlled automatic micro-extraction device of liquid phase

Microwave remediation device for organically-polluted soil