MVR (Mechanical Vapor Recompression) waste gas treatment and collection device for sewage station

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a sewage station MVR waste gas treatment and collection device which comprises a waste gas treatment unit, the waste gas treatment unit is connected to a concentrated solution collection box through an insertion pipe, the concentrated solution collection box is arranged in a sealed mode, a breather valve is arranged on the concentrated solution collection box, and a gas collection cover is arranged on the breather valve. And the gas collecting hood is connected to a waste gas treatment system through an exhaust pipe. The breather valve is arranged on the concentrated solution collecting box, waste gas generated in the concentrated solution collecting box is led out to the waste gas treater, and the situation that the waste gas is discharged irregularly and pollutes the environment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment and collection device for MVR waste gas treatment in wastewater treatment plants. Background Technology

[0002] MVR (Medium-Vacuum Recycling) effectively utilizes the secondary steam and its energy generated by the evaporation system itself. The concentrated mother liquor produced by MVR evaporation has an off-odor during the collection process.

[0003] To prevent gas leakage, the existing technology seals the collection tank. However, due to the internal pressure generated in the collection tank, pressure buildup occurs when discharging material into the collection tank. In addition, if the collection electrode is not sealed tightly, some waste gas will also be released into the environment, causing pollution. Utility Model Content

[0004] The purpose of this invention is to solve the above problems by providing a wastewater treatment and collection device for MVR waste gas treatment. A breather valve is installed on the concentrate collection tank to discharge the waste gas generated in the concentrate collection tank to the waste gas processor, thereby preventing the waste gas from being discharged improperly and polluting the environment.

[0005] The technical solution adopted by this utility model is:

[0006] A wastewater treatment plant MVR exhaust gas treatment and collection device is characterized by comprising an exhaust gas treatment unit, which is connected to a concentrate collection tank via a pipe. The concentrate collection tank is sealed, and a breather valve is installed on the concentrate collection tank. A gas collection hood is installed on the breather valve, and the gas collection hood is connected to an exhaust gas treatment system via an exhaust pipe.

[0007] Furthermore, the concentrate collection tank is equipped with a lid, the tubing is inserted into the concentrate collection tank from the lid, a vent is provided on the lid, and a breathing valve is provided on the vent.

[0008] Furthermore, the gas collection hood is a wide-angle mask that is connected to the exhaust pipe via a flexible hose, and the gas collection hood is fixed to the insertion tube.

[0009] Furthermore, the exhaust pipe is located above the gas collection shroud.

[0010] Furthermore, the waste gas treatment unit includes a preheater, an evaporator, and a separator. After the wastewater is preheated by the preheater, it is heated and evaporated into primary steam by the evaporator. The primary steam is separated into secondary steam and concentrate by the separator. The concentrate is sent to the concentrate recovery tank, and the secondary steam is compressed and returned to the evaporator.

[0011] Furthermore, the exhaust pipe of the evaporator is connected to a preheater to preheat the wastewater.

[0012] The beneficial effects of this utility model are:

[0013] The exhaust gas is discharged through the vent on the concentrate collection tank, and under the adsorption of the gas collection hood, it enters the exhaust gas treatment system through the pipeline, thereby achieving the emission standard. Attached Figure Description

[0014] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Appendix Figure 2 This is a magnified view of the location of the concentrate collection tank.

[0016] The labels in the attached diagram are as follows:

[0017] 1. Intubation; 2. Concentrate collection tank;

[0018] 3. Bucket lid; 4. Breathing valve;

[0019] 5. Gas collection hood; 6. Flexible hose;

[0020] 7. Exhaust pipe. Detailed Implementation

[0021] The following detailed description of the specific implementation method of the wastewater treatment and collection device for MVR (Mechanical Vapor Regeneration) of this utility model, with reference to the accompanying drawings, is provided in detail.

[0022] See appendix Figure 1 The waste gas treatment unit includes a preheater, an evaporator, and a separator. Wastewater is preheated in the preheater and then evaporated into primary steam in the evaporator. The primary steam is separated into secondary steam and concentrate in the separator. The concentrate is sent to a concentrate recovery tank, and the secondary steam is compressed and returned to the evaporator. The exhaust pipe of the evaporator in the waste gas treatment system is connected to the preheater to preheat the wastewater.

[0023] See appendix Figure 2 The concentrated liquid separated by the separator is connected to the concentrated liquid collection tank 2 through the insertion tube 1. The concentrated liquid collection tank 2 of the exhaust gas treatment system is sealed and has a lid 3. The insertion tube 1 is inserted into the concentrated liquid collection tank 2 through the lid 3. A vent is provided on the lid 3, and a breather valve 4 is provided on the breather. A gas collection hood 5 is provided on the breather valve 4, and the gas collection hood 5 is connected to the exhaust gas treatment system through an exhaust pipe 7.

[0024] The gas collection hood 5 is a wide-face mask, connected to the exhaust pipe 7 via a flexible hose 6, and is fixed to the insertion tube 1. The exhaust pipe 7 is located at a height above the gas collection hood 5, creating a chimney effect and preventing gas from escaping from the breathing valve 4.

[0025] During operation, the breather valve 4 is set with a pressure value. When the pressure in the concentrate collection tank 2 reaches the predetermined value, the breather valve 4 opens to exhaust gas. The exhaust gas is intermittently discharged from the breather valve 4, and the suction generated by the wide opening of the gas collection hood 5 transports the exhaust gas to the exhaust gas treatment system. This ensures that the exhaust gas from the wastewater treatment plant's MVR system does not cause any pollution to the environment.

[0026] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A wastewater treatment and collection device for MVR exhaust gas, characterized in that: It includes an exhaust gas treatment unit, which is connected to a concentrate collection tank via a pipe. The concentrate collection tank is sealed and equipped with a breather valve and a gas collection hood. The gas collection hood is connected to the exhaust gas treatment system via an exhaust pipe.

2. The wastewater treatment and collection device for MVR waste gas treatment according to claim 1, characterized in that: The concentrate collection tank is equipped with a lid, the tubing is inserted into the concentrate collection tank through the lid, a vent is provided on the lid, and a breathing valve is provided on the vent.

3. The wastewater treatment and collection device for MVR waste gas treatment according to claim 1, characterized in that: The gas collection hood is a wide-angle mask that is connected to the exhaust pipe via a flexible hose. The gas collection hood is fixed to the insertion tube.

4. The wastewater treatment and collection device for MVR waste gas treatment according to claim 3, characterized in that: The exhaust pipe is located above the gas collection shroud.

5. A wastewater treatment and collection device for MVR waste gas treatment according to any one of claims 1 to 4, characterized in that: The waste gas treatment unit includes a preheater, an evaporator, and a separator. After being preheated by the preheater, the wastewater is heated and evaporated into primary steam by the evaporator. The primary steam is separated into secondary steam and concentrate by the separator. The concentrate is sent to the concentrate recovery tank, and the secondary steam is compressed and returned to the evaporator.

6. The wastewater treatment and collection device for MVR waste gas treatment according to claim 5, characterized in that: The exhaust pipe of the evaporator is connected to the preheater to preheat the wastewater.

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