Oxidative destruction device for an insoluble matter of sludge purification, by thermal and ultrasonic coupling, comprises a main reactor having sludge with an air injection unit, and an unit for applying ultrasound to the sludge

摘要

The oxidative destruction device for an insoluble matter of sludge purification by thermal and ultrasonic coupling, comprises a main reactor (1) having sludge with an air injection unit (4), an unit (M) for applying ultrasounds to the sludge, a temperature measuring unit (5) for a reactional medium in the reactor, and a regulation unit for comparing a measured temperature value with a recorded temperature value of the reactional medium. The unit (M) is made up of sonication reactor. The oxidative destruction device for an insoluble matter of sludge purification by thermal and ultrasonic coupling, comprises a main reactor (1) having sludge with an air injection unit (4), an unit (M) for applying ultrasounds to the sludge, a temperature measuring unit (5) for a reactional medium in the reactor, and a regulation unit for comparing a measured temperature value with a recorded temperature value of the reactional medium. The unit (M) is made up of sonication reactor. The regulation unit starts the unit (M) when the measured temperature is lower than the recorded temperature, and the unit stops the unit (M) when the measure temperature is at least the recorded temperature. The sonication reactor is laid out on a loop (8) of the main reactor, which reinjects a treated sludge in the main reactor, and on an upstream of the main reactor with an inlet pipe. The sludge flow in the loop is at least to the sludge flow entering in the main reactor through the inlet pipe. The sonication reactor comprises a metallic pipe passed over by the sludge flow. Ultrasound transmitters are diametrically distributed along a pipe. The ultrasounds are emitted by the ultrasound transmitter. The ultrasound transmitter is made up of a sonotrode having a generator with a nozzle whose end is extended against the external surface of the pipe, and a probe having a generator provided with a nozzle, which passes over the wall of the pipe in an invulnerable way. The power ratio of the sonication reactor to the sludge flow is 15 kW/m3/h. The recorded temperature in the main reactor is higher than 60[deg]C.