CN115350998A - Bulk solid waste water washing device and operation method - Google Patents

Abstract

The invention provides a bulk solid waste water washing device and an operation method thereof. The washing device is simple in structure, complete in function, simple and ingenious in operation method, and the washing device conforms to the concept of green development of China, greatly improves the pretreatment efficiency of the bulk solid waste, and has important engineering practical significance for promoting the resource utilization of the bulk solid waste.

Description

Bulk solid waste water washing device and operation method

Technical Field

The invention relates to the field of solid waste resource utilization, in particular to a bulk solid waste washing device and an operation method.

Background

The bulk solid waste is generally a byproduct formed in an industrial production process, and often contains impurities such as organic matters, heavy metals and the like (for example, except calcium sulfate, the impurities mainly comprise phosphorus-containing impurities, fluorine-containing impurities, organic matter impurities and the like), so pretreatment, generally calcination and washing treatment, is needed before the bulk solid waste is recycled. The calcination is to place the solid waste into a furnace for calcination treatment at a certain temperature, and has high equipment requirement, high energy consumption and difficult wide application. The water washing method is that the bulk solid waste is put into a barrel, water with the solid-liquid volume ratio of about 1: 3 is put into the barrel, the mixture is fully stirred and then stands for a period of time, then the upper layer water is poured out, and the washing is repeated for a plurality of times until the pH value of the solid waste is close to 7. Although the water washing method has the advantages of simple operation, low equipment requirement and good treatment effect, the water washing method has low treatment efficiency and consumes manpower, and the generated sewage can cause secondary environmental pollution and harm to the ecological environment.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a bulk solid waste washing device and an operation method thereof so as to improve the pretreatment efficiency of bulk solid waste and promote the resource utilization of the bulk solid waste.

The invention adopts the following technical scheme for realizing the purpose of the invention:

a bulk solid waste water washing device comprises a main body device and a control system;

the main body device comprises a water washing tank, a filtering system with a layered structure is arranged in the water washing tank, and a pH sensor is arranged in the water washing tank above the filtering system;

the control system comprises the control system, the water source is connected to one end of the water pump, the other end of the water pump is connected with the water washing box through the water pipe, and the controller controls the water pump and the pH sensor through being electrically connected with the water pump and the pH sensor.

The further technology of the invention is as follows:

preferably, the water washing tank is a uncovered hollow tank body with a rectangular cross section, and the height of an inner cavity of the tank body is H; a water outlet is formed in the center of the bottom of the water washing tank, the water washing tank is arranged in the center of the top face of the movable support frame, and the solution collector is arranged in the center of the lower portion of the movable support frame and corresponds to the water outlet vertically.

Preferably, any two parallel tank plates on the water washing tank are marked as plates A, the filtering system comprises a lower partition plate fixedly connected with the plates A in the water washing tank, and an upper partition plate fixedly connected with the plates A in the water washing tank; the upper partition plate and the lower partition plate are uniformly distributed with through holes.

Preferably, the upper baffle plate and the lower baffle plate are replaceable parts, the diameter of a through hole of the upper baffle plate is 10-75um, and the diameter of a through hole of the lower baffle plate is 5-10mm.

Preferably, a stirrer is arranged above the upper partition plate, and the stirrer is powered by an external power supply and is controlled by a control system.

The invention also provides an operation method of the bulk solid waste washing device, which comprises the steps of pouring the crushed solid waste into a washing box, then washing, stirring by a stirrer, and permeating the washing solution into a solution collector through an adsorption plate. When the pH value of the water washing solution in the solid waste chamber is close to neutrality, the water washing is completed.

The method specifically comprises the following steps:

step 1, crushing of solid wastes

Crushing the screened solid waste to enable the particle size to be below 1 cm;

step 2, fixing the roller of the movable support frame, then placing the washing tank in the center of the top surface of the movable support frame, connecting the water guide pipe with the water outlet, then placing the adsorption plate in the adsorption chamber, and placing the solution collector in the center of the lower part of the movable support frame; finally, the inspection controller is connected with the water pump, the stirrer and the pH sensor through lines;

step 3, washing of solid waste

Step 3.1, pouring the solid waste subjected to crushing treatment into a solid waste chamber, wherein the volume of the solid waste chamber is not more than 3/4 of the volume of the solid waste chamber;

step 3.2, opening a controller switch; the water pump enters water in a water source into the solid waste chamber through a water delivery pipe, and after the solid waste chamber is submerged by water, the stirrer starts to work to drive the solid waste to stir together; the water washing solution enters the adsorption chamber through the through hole of the upper clapboard, then permeates into the water chamber after being adsorbed by the adsorption plate, and finally enters the solution collector from the water outlet through the water guide pipe;

step 3.3, stopping water washing when the pH value reaches 7 +/-0.5, and entering step 4; otherwise, continuing to carry out the step 3.2;

step 4, washing the solid waste water

And (4) recording the pH value, removing the solution collector after the solution in the solid waste chamber completely permeates, and finishing the solid waste water washing.

Compared with the prior art, the invention has the beneficial effects that:

1) The adsorption plate in the water washing device can be conveniently replaced, a proper adsorption plate can be replaced for different bulk solid wastes, so that the impurities in the solid waste water washing solution can be effectively adsorbed, and meanwhile, the generated aqueous solution can be directly discharged into the environment, so that the secondary pollution to the ecological environment is avoided;

2) The solid waste water washing device has the advantages of simple structure, complete functions, simple and ingenious operation method and improvement on the treatment efficiency of bulk solid waste water washing.

Drawings

FIG. 1 is a schematic view (front view) of the overall structure of a water washing apparatus of the present invention;

FIG. 2 is a schematic top view of the water washing tank, the upper partition, the lower partition, and the movable support of the present invention;

FIG. 3 is a schematic structural diagram of a controller according to the present invention;

in the figure: 1. a water source; 2. a water pump; 3. a water delivery pipe; 4. a controller; 5. a water washing tank; 6. a box bottom; 7. a water outlet; 8. an upper partition plate; 9. a lower partition plate; 10. a solid waste chamber; 11. an adsorption chamber; 12. a stirrer; 13. a pH sensor; 14. an adsorption plate; 15. a water chamber; 16. a water conduit; 17. a movable support frame; 18. a roller; 19. a solution collector; 20. a power key; 21. a start key; 22. a pause key; 23. washing the bond with water; 24. a stirring key; 25. the pH value; 26. a display screen; 27. and (5) solid waste.

Detailed Description

Embodiments of the present invention are described in detail below with reference to fig. 1-3.

The invention provides a bulk solid waste water washing device which comprises a main body device and a control system, wherein the main body device comprises a washing tank 5, a stirrer 12, a pH sensor 13, an adsorption plate 14, a movable support frame 17 and a solution collector 19;

the water washing tank 5 is a uncovered hollow tank body with a rectangular cross section, and the height of an inner cavity of the tank body is H; a water outlet 7 is arranged at the center of the bottom 6 of the water washing tank 5; marking any two parallel box plates on the washing tank 5 as plates A, fixedly connecting a lower partition plate 9 which is mutually vertical to the plates A at a position with the height h1 in the washing tank 5, and fixedly connecting an upper partition plate 8 which is mutually vertical to the plates A at a position with the height h2 in the washing tank 5, wherein the thickness of the upper partition plate is h3; the upper partition plate 8 and the lower partition plate 9 are fully distributed with through holes; the part above an upper partition plate 8 in the washing tank 5 is a solid waste chamber 10, the part between the upper partition plate 8 and a lower partition plate 9 in the washing tank 5 is an adsorption chamber 11, and the part below the lower partition plate 9 in the washing tank 5 is a water chamber 15; the stirrer 12 is arranged at the center of the top surface of the upper clapboard 8; the pH sensor 13 is arranged in the solid waste chamber 10; the adsorption plate 14 is arranged in the adsorption chamber 11 and has a thickness h4; the top surface of the movable support frame 17 is of a rectangular structure, a rectangular hollow part is arranged at the center, and the hollow area is smaller than the area of the box bottom 6 of the washing box 5; in operation, the water washing tank 5 is arranged at the center of the top surface of the movable supporting frame 17, and the solution collector 19 is arranged at the center of the lower part of the movable supporting frame 17.

The control system comprises a water source 1, a water pump 2, a water delivery pipe 3 and a controller 4; the controller 4 comprises a start switch 21, a pause switch 22, a water washing switch 23, a stirring switch 24, a pH value switch and a display screen 26; the water washing switch 23 controls the water pump 2 to work, the stirring switch 24 controls the stirrer 12, the pH value switch controls the pH sensor 13, and the display screen 26 displays the pH value; when the water washing machine works, one end of a water pump 2 is connected with a water source 1, and the other end of the water pump is connected with a water washing tank 5 through a water conveying pipe 3;

the upper partition plate 8 and the lower partition plate 9 are both replaceable parts, the upper partition plate 8 with the diameter of a through hole of 10-75um can be customized, and the diameter of the through hole on the lower partition plate 9 is 5-10mm;

the adsorption plate 14 is a replaceable part, the adsorption plate 14 made of different porous active materials can be customized, and the pore diameter is 10-75um; h1 is the height of the top surface of the lower clapboard 9, h2 is the height of the top surface of the upper clapboard 8, and h1 is more than or equal to 5cm, h2-h1-h3-h4 is more than or equal to 0 and less than or equal to 2mm; the cross sections of the upper partition plate 8, the lower partition plate 9 and the adsorption plate 14 are the same as the cross section of the water washing tank 5;

in this embodiment, the washing tank 5 is made of 316 stainless steel, the height H of the inner cavity is 80cm, the side length is 50cm, the height H1 of the lower partition plate 9 is 10cm, the height H2 of the upper partition plate 8 is 20cm, the thickness H3 is 1cm, and the thickness H4 of the adsorption plate 14 is 8.9cm. The diameter of the through hole of the upper clapboard 8 is 75um, and the diameter of the through hole of the lower clapboard 9 is 10mm; the used adsorption plate 14 is a porous material plate made of nano silicon dioxide, slag and bentonite, and the aperture is 30-50um;

the present invention also provides a method of operating a bulk solid waste water washing apparatus, which pours the crushed solid waste 27 into a water washing tank 5, then performs water washing, and is stirred by a stirrer 12, and the water washing solution permeates into a solution collector 19 through an adsorption plate 14. When the pH value of the water washing solution in the solid waste chamber 10 is close to neutral, the water washing is completed.

Specifically, the method comprises the following steps:

step 1, crushing of solid wastes

Crushing the screened solid waste 27 by using a crusher to enable the particle size to reach below 1 cm; in this example, the solid waste 27 used was phosphogypsum, which was off-white in color, and was tested to have an initial pH of 3.50, a phosphorus content of 0.15%, a fluorine content of 0.08%, and a zinc content of 0.15mg/L.

Step 2, fixing a roller 18 of a movable support frame 17, then placing a washing tank at the center of the top surface of the movable support frame 17, connecting a water guide pipe 16 with a water outlet 7, then placing an adsorption plate 14 in an adsorption chamber 11, and placing a solution collector 19 at the center of the lower part of the movable support frame 17; finally, the inspection controller 4 is connected with the water pump 2, the stirrer 12 and the pH sensor through lines;

step 3, washing of solid waste

Step 3.1, pouring the crushed solid waste 27 into a solid waste chamber 10, wherein the volume of the crushed solid waste 27 is not more than 3/4 of the volume of the solid waste chamber 10;

step 3.2, sequentially turning on a power switch 20, a starting switch 21, a washing switch 23 and a pH value measuring switch 25 of the controller 4; the water pump 2 is used for feeding water in the water source 1 into the solid waste chamber 10 through the water conveying pipe 3, and the display screen 26 is used for displaying the pH value; after the solid waste 27 is submerged by the water in the solid waste chamber 10, turning on the stirring 24 switch, and starting the stirrer 12 to drive the solid waste 27 to stir together; the water washing solution enters the absorption chamber 11 through the through hole of the upper clapboard 8, then permeates into the water chamber 15 after being absorbed by the absorption plate 14, and finally enters the solution collector 19 from the water outlet 7 through the water guide pipe 16;

step 3.3, when the pH value reaches 7 +/-0.5, pressing the pause switch 22, stopping water washing, and entering step 4; otherwise, continuing to carry out the step 3.2;

step 4, washing the solid waste water

Recording the pH value in the display screen 26, and pressing the power switch 20; and after the solution in the solid waste chamber 10 is completely permeated, removing the solution collector 19, and finishing the water washing of the solid waste 27. In this example, phosphogypsum is white in colour after washing with water, the pH rises to 7.60, the phosphorus content is reduced to 0.03%, the fluorine content is 0.01% and the zinc content is 0.04mg/L.

The solid waste 27 is bulk solid waste, and mainly comprises: coal gangue, fly ash, tailings, industrial by-product gypsum, smelting slag and the like;

the aqueous solution in the solution collector 19 may be poured directly onto the surface.

In the present invention, features are not necessarily present in isolation, but are interleaved with each other unless explicitly stated or limited. The foregoing shows and describes the principles, essential features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and the description are only preferred examples of the present invention, and are not intended to limit the present invention to become the only choice. The invention may be further modified and optimized while remaining within the spirit and scope of the claimed invention, as defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a bulk solid waste water washing device which characterized in that: comprises a main body device and a control system;

the main body device comprises a water washing tank (5), a filtering system with a layered structure is arranged in the water washing tank (5), and a pH sensor (13) is arranged in the water washing tank (5) above the filtering system;

the control system comprises a water source (1), a water pump (2), a water pipe (3) and a controller (4), one end of the water pump (2) is connected with the water source (1), the other end of the water pump is connected with a water washing box (5) through the water pipe (3), and the controller (4) controls the water pump (2) and the pH sensor (13) through electric connection with the water pump (2) and the pH sensor (13).

2. The bulk solid waste water washing device as claimed in claim 1, wherein the washing tank (5) is a hollow tank body with a rectangular cross section and without a cover, a water outlet (7) is formed in the center of the bottom (6) of the washing tank (5), the washing tank (5) is arranged in the center of the top surface of the movable support frame (17), and the solution collector (19) is arranged in the center of the lower portion of the movable support frame (17) and vertically corresponds to the water outlet (7).

3. The bulk solid wastewater washing device as claimed in claim 2, wherein any two parallel tank plates on the washing tank (5) are marked as plates A, the filtering system comprises a lower partition plate (9) which is fixedly connected in the washing tank (5) and mutually perpendicular to the plates A, an upper partition plate (8) which is fixedly connected in the washing tank (5) and mutually perpendicular to the plates A, through holes are uniformly distributed in the upper partition plate (8) and the lower partition plate (9), and an adsorption plate (14) is arranged between the upper partition plate (8) and the lower partition plate (9).

4. The bulk solid waste water washing device according to claim 3, wherein the upper partition plate (8) and the lower partition plate (9) are replaceable parts, the diameter of the through hole of the upper partition plate (8) is 10-75um, and the diameter of the through hole of the lower partition plate (9) is 5-10mm.

5. The bulk solid waste water washing device according to claim 3, wherein a stirrer (12) is arranged above the upper partition plate (8), and the stirrer is powered by an external power supply and is controlled by a control system.

6. A method of operating a bulk solid waste water washing apparatus according to claims 1-5 wherein the crushed solid waste (27) is dumped into a water washing tank (5) and then washed with water and agitated by an agitator (12) and the water washing solution is passed through an adsorption plate (14) to a solution collector (19) and the washing is completed when the pH of the water washing solution in the solid waste chamber (10) approaches neutral.

7. The method of operating a bulk solid waste water washing apparatus according to claim 6, comprising the steps of:

step 1, crushing of solid wastes

Crushing the screened solid waste (27) to enable the particle size to be below 1 cm;

step 2, fixing rollers (18) of a movable support frame (17), then placing a washing tank at the center of the top surface of the movable support frame (17), connecting a water guide pipe (16) with a water outlet (7), then placing an adsorption plate (14) in an adsorption chamber (11), and placing a solution collector (19) at the center of the lower part of the movable support frame (17); finally, the inspection controller (4) is connected with the water pump (2), the stirrer (12) and the pH sensor through lines;

step 3, washing of solid waste

Step 3.1, pouring the crushed solid waste (27) into a solid waste chamber (10), wherein the volume of the solid waste chamber is not more than 3/4 of the volume of the solid waste chamber (10);

step 3.2, opening a switch (25) of the controller (4); the water pump (2) is used for feeding water in the water source (1) into the solid waste chamber (10) through the water delivery pipe (3), and after the solid waste (27) is submerged by the water in the solid waste chamber (10), the stirrer (12) starts to work to drive the solid waste (27) to stir together; the water washing solution enters the adsorption chamber (11) through the through hole of the upper clapboard (8), then permeates into the water chamber (15) after being adsorbed by the adsorption plate (14), and finally enters the solution collector (19) from the water outlet (7) through the water guide pipe (16);

step 3.3, stopping water washing when the pH value reaches 7 +/-0.5, and entering step 4; otherwise, continuing to carry out the step 3.2;

step 4, washing the solid waste water

And recording the pH value, removing the solution collector (19) after the solution in the solid waste chamber (10) is completely infiltrated, and finishing the water washing of the solid waste (27).

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