Waste acid mixed liquid treatment system

Abstract

A waste acid mixture treatment system includes a storage tank, an ozone generator, and a gravity device. The storage tank contains a waste acid mixture, which includes inorganic oxyacid and hydrogen peroxide. The ozone generator produces an ozone-containing gas. The gravity device connects the storage tank and the ozone generator, and is used to introduce the ozone-containing gas and the waste acid mixture into the system, mixing them to produce an ozone-containing effluent and an oxygen-containing tail gas. This waste acid mixture treatment system can rapidly and significantly reduce the hydrogen peroxide concentration in the waste acid mixture without consuming large amounts of catalyst and without any residual side effects in subsequent use.

Claims

1. A waste acid mixture treatment system, comprising: a storage tank for containing a waste acid mixture, the waste acid mixture containing inorganic oxyacid and hydrogen peroxide; an ozone generator for generating an ozone-containing gas; and a gravity device connected to the storage tank and the ozone generator, and for introducing the ozone-containing gas and the waste acid mixture into the storage tank to mix and obtain an ozone-containing effluent and an oxygen-containing tail gas.

2. The waste acid mixture treatment system as claimed in claim 1 further includes a pump connecting the storage tank and the hypergravity device, and is used to introduce the waste acid mixture in the storage tank into the hypergravity device; and the storage tank is also used to receive the ozone-containing effluent to mix with the waste acid mixture.

3. The waste acid mixture treatment system as described in claim 2, wherein, The liquid storage tank includes a gas-liquid separator installed inside it to prevent gas from being carried into the pump.

4. The waste acid mixture treatment system as described in claim 3, wherein, The gas-liquid separator includes a baffle.

5. The waste acid mixture treatment system as described in claim 3, wherein, The gas-liquid separator includes a wire mesh.

6. The waste acid mixture treatment system as claimed in claim 1 further includes a heater for heating the waste acid mixture to 50~120°C.

7. The waste acid mixture treatment system as described in claim 6, wherein, The heater is located between the liquid storage tank and the hypergravity device.

8. The waste acid mixture treatment system as described in claim 6, wherein, The heater is located inside the liquid storage tank.

9. The waste acid mixture treatment system as described in claim 6, wherein, The heater is a heating jacket that surrounds the liquid storage tank.

10. The waste acid mixture treatment system as claimed in claim 6 further includes a heat exchanger for exchanging heat between the unheated waste acid mixture and the waste acid mixture heated by the heater.

11. The waste acid mixture treatment system as claimed in claim 1 further includes a detector connected to the hypergravity device and used to detect the ozone concentration in the oxygen-containing exhaust gas.

12. The waste acid mixture treatment system as claimed in claim 1 further includes a tail gas treatment device connected to the hypergravity device and used to treat trace amounts of ozone in the oxygen-containing tail gas.

13. The waste acid mixture treatment system as described in claim 12, wherein, The exhaust gas treatment device is an ejector.

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