Pretreatment device for solid-liquid separation of liquid hazardous wastes

Abstract

The utility model discloses a pretreatment device for solid-liquid separation of liquid hazardous wastes, and belongs to the technical field of pretreatment of liquid hazardous wastes. The device is composed of a liquid hazardous waste liquid inlet tank, a solid salt substance separating tank and a solid salt substance collecting tank, and the solid salt substance separating tank is arranged under the liquid hazardous waste liquid inlet tank and used for precipitating solid salt substances in the liquid hazardous waste; a liquid inlet is formed in the upper end of the end face of one side of the liquid hazardous waste liquid inlet groove and is of an outwards-expanded oval structure. A liquid outlet is formed in the lower end of the end face of the other side of the liquid hazardous waste liquid inlet groove, and a filter screen is arranged in front of the liquid outlet and used for filtering solid salt substances which are not completely precipitated in liquid before the liquid flows out. A drawing type sealing plate is arranged between the solid salt substance separating tank and the solid salt substance collecting tank and is used for controlling the discharging of solid salt substances. According to the utility model, a large amount of solid salt substances in the dangerous waste liquid can be simply, conveniently and quickly separated, and the work of operators can be greatly simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of pre-treatment of liquid hazardous wastes, and in particular relates to a pre-treatment device for solid-liquid separation of liquid hazardous wastes. Background Art

[0002] Solid-liquid separation of liquid hazardous waste refers to the process of separating the solid matter in the liquid hazardous waste collected from various biochemical laboratories, chemical pharmaceutical plants and chemical plants before sending them to the incinerator for incineration.

[0003] Since the hazardous waste liquids from some chemical pharmaceutical plants contain a large amount of solid salt substances such as chlorine and sulfur, they will have a high degree of corrosive destructiveness to the incinerator and damage the heat-resistant material structure of the incinerator. This shortens the life of the incinerator and increases the cost of use. Solid salt substances have a low calorific value, and if they are not separated, they will also affect the feed compatibility. Therefore, a pre-treatment device that can separate the solid and liquid of liquid hazardous waste is needed. At present, the pre-treatment devices for solid-liquid separation are suitable for the solid-liquid separation of liquid hazardous waste with less solid matter components. According to current production needs, a solid-liquid separation device suitable for liquid hazardous waste with more solid salt components is needed. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art and to propose a pre-treatment device for solid-liquid separation of liquid hazardous waste.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pre-treatment device for solid-liquid separation of liquid hazardous waste, comprising a liquid hazardous waste inlet tank, a solid salt substance separation tank, and a solid salt substance collecting tank. The liquid hazardous waste inlet tank and the solid salt substance collecting tank are rectangular parallelepiped structures, and the solid salt substance separation tank is an inverted cone structure; the solid salt substance separation tank is arranged directly below the liquid hazardous waste inlet tank, and the size of its upper surface is consistent with the size of the lower surface of the liquid hazardous waste inlet tank, and the solid salt substance separation tank is used to precipitate solid salt substances in the liquid hazardous waste; a liquid inlet is arranged at the upper end of the end surface of one side of the liquid hazardous waste inlet tank, which is an outwardly expanded elliptical structure, which is convenient for feeding liquid hazardous waste; a liquid outlet is arranged at the lower end of the end surface of the other side of the liquid hazardous waste inlet tank, which is convenient for the outflow of liquid after the solid salt substances are precipitated; a filter is arranged in front of the liquid outlet, which is used to filter the solid salt substances that have not been completely precipitated in the liquid before the liquid flows out. The lower surface of the solid salt separation tank is the solid salt discharge port, and the solid salt is discharged into the solid salt collecting tank through the solid salt separation tank; a pull-out sealing plate is provided between the solid salt separation tank and the solid salt collecting tank to control the discharge of the solid salt.

[0007] A cover plate is arranged above the liquid hazardous waste inlet tank to isolate the pungent smell emitted by the liquid hazardous waste; a liquid outlet sealing plate is arranged at the front end of the liquid outlet to control the discharge of the hazardous waste liquid.

[0008] Preferably, the liquid hazardous waste inlet tank, solid salt separation tank, solid salt collection tank, liquid outlet sealing plate, pull-out sealing plate, liquid inlet, liquid outlet, and cover plate are all made of corrosion-resistant PE or 2205 stainless steel.

[0009] Preferably, the solid salt substance separation tank and the solid salt substance collecting tank are completely separated by a pull-out sealing plate.

[0010] Preferably, the pull-out sealing plate is slidably fitted to the lower surface of the solid salt substance separation tank.

[0011] Preferably, the filter screen is made of 80-100 mesh corrosion-resistant nylon filter screen or polypropylene filter screen, and the size of the filter screen matches the size of the liquid outlet.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, liquid hazardous waste enters through the liquid inlet of the liquid hazardous waste inlet tank and flows to the liquid outlet. A large amount of solid salt substances in the liquid hazardous waste are precipitated in the solid salt substance separation tank due to gravity, thereby quickly separating a large amount of solid salt substances in the liquid hazardous waste; the separated liquid flows out through the liquid outlet, which is more convenient for compatibility and disposal, thereby greatly reducing production costs;

[0014] 2. In the utility model, a pull-out movable baffle is provided at the bottom of the solid salt separation tank. When the solid salt needs to be moved out of the solid salt separation tank, the pull-out movable baffle is pulled out, and the solid salt will enter the solid salt collection tank below from the solid salt separation tank.

[0015] In summary, the utility model can separate a large amount of solid salt substances in hazardous waste liquid simply and quickly, and can also greatly simplify the work of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the device of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model device with a filter screen;

[0018] The names of the various parts are: liquid hazardous waste inlet tank 1, solid salt substance separation tank 2, solid salt substance collection tank 3, liquid outlet sealing plate 4, pull-out sealing plate 5, filter screen 6, liquid inlet 7, liquid outlet 8, and cover plate 9. DETAILED DESCRIPTION

[0019] Example 1

[0020] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] Use a rotary forklift to pour the liquid hazardous waste in the barrel into the liquid hazardous waste inlet tank 1 through the liquid inlet 7. When the liquid hazardous waste flows in the liquid inlet tank 1 toward the liquid outlet 8, it passes through the solid salt separation tank 2. Due to the gravity factor, a large amount of solid salt in the liquid hazardous waste will directly settle in the solid salt separation tank 2, and other hazardous waste liquids that do not contain solid salt will flow out through the liquid outlet 8. A filter 6 is arranged at the front end of the liquid outlet 8. A small amount of solid salt in the liquid that has not been completely precipitated will be intercepted by the filter 6 and placed in the liquid hazardous waste inlet tank 1, and then precipitated in the solid salt separation tank 2. When a large amount of solid salt is accumulated in the solid salt separation tank 2, the staff will pull out the pull-out sealing plate 5 arranged between the solid salt separation tank 2 and the solid salt collection tank 3, so that the solid salt accumulated in the solid salt separation tank 2 enters the solid salt material collection tank 3 and is collected.

[0022] A cover plate 9 is arranged above the liquid hazardous waste inlet tank 1 to isolate the pungent smell emitted by the liquid hazardous waste; a liquid outlet sealing plate 4 is arranged at the front end of the liquid outlet 8 to control the discharge of the hazardous waste liquid.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. All modifications, equivalent replacements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-treatment device for solid-liquid separation of liquid hazardous waste, characterized by: The invention comprises a liquid hazardous waste inlet tank (1), a solid salt substance separation tank (2), and a solid salt substance collection tank (3); the liquid hazardous waste inlet tank (1) and the solid salt substance collection tank (3) are rectangular parallelepiped structures, and the solid salt substance separation tank (2) is an inverted cone structure; the solid salt substance separation tank (2) is arranged directly below the liquid hazardous waste inlet tank (1), and the size of its upper surface is consistent with the size of its lower surface of the liquid hazardous waste inlet tank (1); A liquid inlet (7) is provided at the upper end of one end surface of the liquid inlet tank (1) and is an outwardly expanded elliptical structure; a liquid outlet (8) is provided at the lower end of the other end surface of the liquid hazardous waste inlet tank (1), and a filter screen (6) is provided in front of the liquid outlet (8); a pull-out sealing plate (5) is provided between the solid salt substance separation tank (2) and the solid salt substance collection tank (3), and the solid salt substance is discharged into the solid salt substance collection tank (3) through the solid salt substance separation tank (2).

2. A pre-treatment device for solid-liquid separation of liquid hazardous waste according to claim 1, characterized in that: A cover plate (9) is arranged above the liquid hazardous waste inlet tank (1).

3. A pre-treatment device for solid-liquid separation of liquid hazardous waste according to claim 1, characterized in that: A liquid outlet sealing plate (4) is arranged at the front end of the liquid outlet (8).

4. A pre-treatment device for solid-liquid separation of liquid hazardous waste according to claim 1, characterized in that: The filter screen (6) is a corrosion-resistant nylon filter screen or a polypropylene filter screen with a mesh size of 80 to 100.

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