CN216808374U

CN216808374U - Shale gas produced water filtration and disinfection processing apparatus

Info

Publication number: CN216808374U
Application number: CN202121183053.3U
Authority: CN
Inventors: 沙月华; 陈俊琛; 秦庆戊
Original assignee: 5Elem Hi Tech Corp Technology Co Ltd
Current assignee: 5Elem Hi Tech Corp Technology Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-06-24
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a shale gas produced water filtering and disinfecting treatment device, which comprises a rack, a first packing auger, a second packing auger and a square treatment box, wherein the first packing auger, the second packing auger and the treatment box are arranged on the rack from top to bottom, and an interception layer is arranged in the treatment box; a snake-shaped water channel is arranged in the interception block, a concave groove is formed in the horizontal position in the middle of the snake-shaped water channel, and a plurality of narrow areas are formed in the snake-shaped water channel, so that particles can be completely intercepted, and the treatment effect is good; the treatment incasement can pressurize for the velocity of water flow improves work efficiency.

Description

Shale gas produced water filtration and disinfection processing apparatus

Technical Field

The utility model belongs to the technical field of shale gas extraction, and particularly relates to a shale gas produced water filtering and disinfecting treatment device.

Background

Shale gas is a natural gas resource which is stored in a shale layer and can be exploited, and the recoverable reserves of shale gas in China are large. The shale gas exploitation can make up the defect that the oil exploitation amount in China cannot meet the requirement, a large amount of water is needed in the shale gas exploitation process, the hydraulic fracturing technology is used for breaking underground rock strata, the shale gas in the underground rock strata is released, the water injected into the rock strata can be flowback at different stages of shale gas production, the water is called as produced water, investigation shows that most shale gas exploitation areas are in water-deficient areas, the discharged produced water is urgently needed to be treated and reused, the produced water contains sludge, high-concentration total dissolved solids, chemical additives and heavy metal ions, the produced water is difficult to degrade and difficult to treat, and if the produced water is directly discharged into a water channel, the ecological environment can be polluted; meanwhile, the method also brings serious threat to drinking water, aquatic organisms and daily living environment of residents. The existing common biological treatment method and physical and chemical method for treating shale gas produced water have poor interception effect of particles, more bacteria and less water treatment amount, cannot achieve the purpose of recycling, and need to be improved.

Disclosure of Invention

In order to solve the problems, the utility model discloses a shale gas produced water filtering and disinfecting treatment device, which is used for firstly pressing mud for draining water, intercepting, disinfecting and filtering particles, improving the quality of effluent water and achieving the purpose of recycling.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a shale gas produced water filtering and disinfecting treatment device comprises a rack, a first packing auger, a second packing auger and a square treatment box, wherein the first packing auger, the second packing auger and the treatment box are arranged on the rack from top to bottom, the first packing auger comprises a first motor, a first horizontal spiral shaft and a first arc-shaped bottom cover, the first motor is connected with the first horizontal spiral shaft, the first arc-shaped bottom cover is attached below the first horizontal spiral shaft, a plurality of first drainage holes are formed in the first arc-shaped bottom cover, a first sludge discharge hole is formed in the rear end of the first arc-shaped bottom cover, a first cylinder is arranged on the outer side of the first sludge discharge hole, a first telescopic rod connecting pressure plate of the first cylinder props against the first sludge discharge hole, the second packing auger comprises a second motor, a second horizontal spiral shaft and a second arc-shaped bottom cover, the second motor is connected with the second horizontal spiral shaft, the second arc-shaped bottom cover is attached below the second horizontal spiral shaft, a plurality of second drainage holes are formed in the second arc-shaped bottom cover, a second sludge discharge hole is formed in the rear end of the second arc-shaped bottom cover, a second air cylinder is arranged outside the second sludge discharge port, a telescopic rod of the second air cylinder is connected with a second pressing plate to prop against the second sludge discharge port, the second sludge discharge port is smaller than the first sludge discharge port, the first air cylinder and the second air cylinder are started at regular intervals, a first chemical feeding port (natural plant modified polymeric flocculant) is arranged between the first auger and the second auger, a flow cover is arranged below the second arc bottom cover and communicated with the upper part of the treatment box, a pressurizing port is arranged on the treatment box, a hollow bracket is arranged in the middle of the treatment box, an intercepting layer consisting of a plurality of intercepting blocks is arranged on the bracket, a water inlet and a water outlet are arranged on the upper surface and the lower surface of each intercepting block, a snake-shaped water channel is arranged between the water inlet and the water outlet, a concave groove is arranged at the middle horizontal part of the snake-shaped water channel, an air blowing hole is connected with an air blowing hole, a second chemical feeding port and a water outlet are arranged below the side of the treatment box, a filter screen is arranged in the water outlet.

As an improvement of the utility model, sealing rings are arranged between the first pressure plate and the first sludge discharge port and between the second pressure plate and the second sludge discharge port.

As an improvement of the utility model, the side surface of the bracket is provided with a buffer layer.

As an improvement of the utility model, the diameter of the snakelike water channel is smaller than that of the drain hole II, and a plurality of narrow areas are arranged inside the snakelike water channel.

As an improvement of the utility model, a detection port is arranged below the side of the treatment box.

As an improvement of the utility model, a pipeline is arranged below the side of the treatment box and is communicated with the second packing auger, and a water pump is arranged on the pipeline.

As a refinement of the utility model, the water outlet is provided with a control valve.

As an improvement of the utility model, an overhaul window is arranged at the water outlet.

A shale gas produced water filtering and disinfecting treatment device comprises the following steps:

(1) the shale gas produced water enters from the front end of the first packing auger, the lower end of the first horizontal screw shaft is attached to the first arc-shaped bottom cover, so that the first horizontal screw shaft can push sludge of the shale gas produced water to the rear end to press water out and only leave solid sludge, sewage flows into the second packing auger from the water discharge hole, the air cylinder is started for a while to discharge the solid sludge,

(2) adding the natural plant modified polymeric flocculant from the first chemical adding port into a second auger, stirring the second auger to mix the flocculant with the wastewater, treating the wastewater flowing into the second auger in the same way as the first auger in the step (1), pushing flocculated foam, sediment and residual sludge by a horizontal spiral shaft to the rear end to press the foam, the sediment and the residual sludge into solid garbage, discharging the sewage from a second drainage hole into a treatment tank, starting a cylinder at regular time to discharge the solid garbage,

(3) pressurizing the inside of the treatment box from a pressurizing port, enabling inflow sewage to enter from a water inlet of the intercepting block and flow out from a water outlet after passing through the snake-shaped water channel, arranging a plurality of narrow areas in the snake-shaped water channel, forming a bridging phenomenon when the residual particles in the sewage pass through the narrow areas, blocking other particles from flowing to the next procedure when the particles are accumulated, but not influencing the water flow, arranging a downward concave groove in the middle horizontal position of the snake-shaped water channel, sinking the residual particles into the groove under the action of gravity when the sewage passes through, and finally forming a conical column to block other particles from flowing to the next procedure, but not influencing the water flow,

(4) and (4) enabling the sewage flowing down in the step (3) to enter the lower half part of the treatment box, adding a strong chlorine solid medicament with the content of more than 90% from the medicament adding port II to disinfect the sewage, finally filtering the disinfected water through a filter screen, enabling the disinfected water to flow out from a water outlet, arranging a detection port below the side of the treatment box, detecting the water before flowing out, and pumping the water into the auger II along a pipeline through a water pump to be treated again if the disinfected water is unqualified.

The beneficial effects of the utility model are:

(1) the utility model integrates the procedures of mud pressing, flocculation, particle interception, disinfection, filtration and the like, has novel structure and convenient operation, improves the quality of the effluent, and can be recycled;

(2) the particle interception is to intercept all particles in the sewage through three processes of the first auger, the second auger and the interception block, so that the treatment effect is good;

(3) the interception layer in the treatment box is formed by combining a plurality of interception blocks, the interception blocks are prefabricated in advance, and can be combined and spliced according to the size of the treatment box, so that the application range is wide;

(4) a snake-shaped water channel is arranged in the intercepting block, a concave groove is formed in the horizontal position in the middle of the snake-shaped water channel, and a plurality of narrow areas are further arranged in the snake-shaped water channel, so that particles can be completely intercepted, and the treatment effect is good;

(5) the inside of the treatment box is pressurized from the pressurizing port, so that the water flow speed is accelerated, and the working efficiency is improved;

(6) after the use is finished, the interception block can be taken out, the plug is taken away, air is blown towards the air blowing hole or the water outlet, and the garbage is cleaned up so as to be convenient for continuous use next time; after the use of the same principle, can open the maintenance window, take out the clearance with the filter screen.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of an interception block according to the present invention.

Fig. 3 is a cross-sectional view of the intercepting block according to the present invention.

List of reference numerals:

1. a frame 2, a first screw auger 3, a second screw auger 4, a treatment box 5, a first motor 6, a first horizontal screw shaft 7, a first arc-shaped bottom cover 8, a first water discharge hole 9, a first sludge discharge port 10, a first air cylinder 11, a first pressure plate 12, a second motor 13, a second horizontal screw shaft 14, a second arc-shaped bottom cover 15, a second water discharge hole 16, a second sludge discharge port 17, a second air cylinder 18, a second pressure plate 19, a first medicine feeding port 20, a second flowing water cover 21, a pressurizing port 22, bracket, 23, interception layer, 24, interception block, 25, water inlet, 26, water outlet, 27, snake-shaped water channel, 28, groove, 29, air blowing hole, 30, plug, 31, medicine adding port II, 32, water outlet, 33, filter screen, 34, sealing ring, 35, buffer layer, 36, narrow area, 37, detection port, 38, pipeline, 39, water pump, 40, control valve, 41 and maintenance window.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and detailed description, which will be understood as being illustrative only and not limiting in scope. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in the figure, the shale gas produced water filtering and disinfecting treatment device comprises a rack 1, a first packing auger 2, a second packing auger 3 and a square treatment box 4, wherein the first packing auger 2, the second packing auger 3 and the treatment box 4 are arranged on the rack 1 from top to bottom, the first packing auger 2 comprises a first motor 5, a first horizontal screw shaft 6 and a first arc-shaped bottom cover 7, the first motor 5 is connected with the first horizontal screw shaft 6, the first arc-shaped bottom cover is attached below the first horizontal screw shaft 6, a plurality of first water drainage holes 8 are formed in the first arc-shaped bottom cover 7, a first sludge discharge hole 9 is formed in the rear end of the first arc-shaped bottom cover 7, a first air cylinder 10 is arranged outside the first sludge discharge hole, a telescopic rod of the first air cylinder is connected with a first pressing plate 11 to prop against the first sludge discharge hole 9, the second packing auger 3 comprises a second motor 12, a second horizontal screw shaft 13 and a second arc-shaped bottom cover 14, the second motor 12 is connected with the second horizontal screw shaft 13, the arc-shaped bottom cover II 14 is attached below the horizontal screw shaft II 13, a plurality of drain holes II 15 are formed in the arc-shaped bottom cover II 14, a sludge discharge hole II 16 is formed in the rear end of the arc-shaped bottom cover II 14, an air cylinder II 17 is arranged on the outer side of the sludge discharge hole II (the air cylinder I and the air cylinder II are fixed on the rack), a telescopic rod of the air cylinder II is connected with a pressing plate II 18 to prop against the sludge discharge hole II, the size of the drain hole II 15 is smaller than that of the drain hole I8, the air cylinder I10 and the air cylinder II 17 are started at intervals at regular time, a chemical feeding hole I19 (natural plant modified polymeric flocculant) is arranged between the auger I and the auger II, a flow cover 20 is arranged below the arc-shaped bottom cover II and communicated with the upper portion of the treatment box 4, a pressurizing hole 21 is formed in the treatment box 4, a hollow bracket 22 is arranged in the middle of the treatment box 4, an intercepting layer 23 consisting of a plurality of intercepting blocks 24 is arranged on the bracket, and a water inlet 25 and a water outlet 26 are arranged on the upper surface and a lower surface of each intercepting block 24, a snake-shaped water channel 27 is arranged between the water inlet 25 and the water outlet 26, a concave groove 28 is arranged at the middle horizontal position of the snake-shaped water channel 27, the bottom of the concave groove is connected with a gas blowing hole 29, a sunk plug 30 is arranged at the gas blowing hole 29, a second dosing hole 31 and a water outlet 32 are arranged below the side of the treatment box, and a filter screen 33 is arranged inside the water outlet 32.

When the device works, shale gas produced water enters from the front end of the first auger 2, because the lower end of the first horizontal screw shaft 6 is attached to the first arc-shaped bottom cover 7, the first horizontal screw shaft 6 can push sludge of the shale gas produced water to the rear end to press water out to only leave solid sludge, sewage flows into the second auger 3 from the first drain hole 8, the first air cylinder 10 can be started at regular time to discharge the solid sludge, a natural plant modified polymeric flocculant is added into the second auger 3 from the first chemical adding port 19, the second auger 3 plays a role in stirring to mix the flocculant and the wastewater together, the wastewater flowing into the second auger 3 is treated in the same way as the first auger 2, flocculated foams, sediments and residual sludge are pushed by the second horizontal screw shaft 13 to be pressed into solid garbage at the rear end, the sewage flows into the treatment tank from the second drain hole 15, the second air cylinder 17 can be started at regular time to discharge the solid garbage, and the wastewater flows into the treatment tank, pressurizing the treatment box from a pressurizing port 21 (accelerating the water to flow downwards), enabling the inflowing sewage to enter from a water inlet 25 of an intercepting block and flow out from a water outlet 26 after passing through a serpentine water channel 27, enabling the diameter of the serpentine water channel 27 to be smaller than that of a drain hole II 15, enabling a plurality of narrow areas 36 to be arranged in the serpentine water channel 27, enabling residual particles in the sewage to form a bridging phenomenon when passing through the narrow areas 36, enabling the particles to be accumulated to block other particles from flowing to a next procedure without influencing the water flow, and enabling the downward flowing sewage to enter the lower half part of the treatment box 4 without influencing the water flow, and enabling strong chlorine solid medicaments with the content of more than 90 percent to be added from a medicament adding port II 31 to disinfect the sewage under the action of gravity when the residual particles in the sewage pass through the narrow areas 36, and finally forming a conical column to block other particles from flowing to the next procedure without influencing the water flow, the sterilized water finally flows out of the water outlet 32 after being filtered by the filter screen 33, the detection port 37 is arranged below the side of the treatment box, the water is detected before flowing out, and if the water is unqualified, the water is pumped into the second auger 3 by the water pump 39 along the pipeline 38 for retreatment.

The utility model integrates the procedures of mud pressing, flocculation, particle interception, disinfection, filtration and the like, has novel structure and convenient operation, improves the quality of the effluent, and can be recycled; the particle interception is to intercept all particles in the sewage through the combination of three procedures of an auger I, an auger II and an interception block, and the treatment effect is good.

The interception layer 23 in the treatment box is formed by combining a plurality of interception blocks 24, the interception blocks are prefabricated in advance, and can be combined and spliced according to the size of the treatment box, so that the application range is wide. The block 24 is arranged on the hollow bracket 22, and the side surface of the bracket 22 is provided with a buffer layer 35, namely, the block 24 is slowly plugged in the bracket, and water can not flow down from the side.

The interception block 24 is internally provided with the snake-shaped water channel 27, the horizontal position in the middle of the snake-shaped water channel 27 is provided with a concave groove, and the snake-shaped water channel is internally provided with a plurality of narrow areas 36 (with smaller inner diameter), so that particles can be completely intercepted, and the treatment effect is good.

After the use is finished, the interception block 24 can be taken out, the plug is taken away, air is blown towards the air blowing hole or the water outlet, and the garbage is cleaned up so as to be convenient for the next continuous use; after the use in the same way, the maintenance window 41 can be opened, and the filter screen can be taken out for cleaning.

The natural plant modified polymeric flocculant is prepared by chemical modification 691, is prepared from wild plants, is convenient to prepare, stable in performance, safe and non-toxic, low in cost, easy to dissolve in water, wide in applicable water quality range, high in settling speed and good in clarity of treated water.

The water flowing cover 20 is arc-shaped (similar to a funnel shape, the upper part is large and the lower part is small, the downward pressure of water flow is increased), water flowing from the second water discharging hole 15 below the second auger can be guided into the treatment box, and the closed structure is convenient for pressurizing the treatment box from the pressurizing opening 21.

The sealing rings 34 are arranged between the first pressure plate 11 and the first sludge discharge opening 9 and between the second pressure plate 18 and the second sludge discharge opening 16, so that water is prevented from leaking from the sludge discharge openings.

The drain port 32 is provided with a control valve 40 to control the speed and amount of the discharged water.

The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.

Claims

1. The utility model provides a shale gas extraction water filtration disinfection processing apparatus which characterized in that: the spiral conveyor comprises a rack, a first spiral conveyor, a second spiral conveyor and a square processing box, wherein the first spiral conveyor, the second spiral conveyor and the processing box are arranged on the rack from top to bottom, the first spiral conveyor comprises a first motor, a first horizontal spiral shaft and a first arc-shaped bottom cover, the first motor is connected with the first horizontal spiral shaft, the first arc-shaped bottom cover is attached below the first horizontal spiral shaft, a plurality of first drainage holes are formed in the first arc-shaped bottom cover, a first sludge discharge hole is formed in the rear end of the first arc-shaped bottom cover, a first air cylinder is arranged on the outer side of the first sludge discharge hole, a first telescopic rod connecting pressing plate of the first air cylinder supports the first sludge discharge hole, the second spiral conveyor comprises a second motor, a second horizontal spiral shaft and a second arc-shaped bottom cover, the second motor is connected with the second horizontal spiral shaft, a plurality of second drainage holes are formed in the second arc-shaped bottom cover, a second sludge discharge hole is formed in the rear end of the second arc-shaped bottom cover, a second sludge discharge hole is formed in the outer side of the second sludge discharge hole, the sludge discharge device is characterized in that a telescopic rod of the cylinder II is connected with a pressing plate II to prop against a sludge discharge port II, the size of the drain hole II is smaller than that of the drain hole I, the cylinder I and the cylinder II are started at regular intervals, a first chemical feeding port is arranged between the auger I and the auger II, a flow cover communicated with the upper portion of the treatment box is arranged below the arc-shaped bottom cover II, a pressurizing port is formed in the treatment box, a hollowed bracket is arranged in the middle of the treatment box, an interception layer composed of a plurality of interception blocks is arranged on the bracket, a water inlet and a water outlet are formed in the upper surface and the lower surface of each interception block, a snake-shaped water channel is arranged between the water inlet and the water outlet, a concave groove is formed in the middle horizontal position of the snake-shaped water channel, an air blowing hole is connected to the bottom of the groove, a countersunk plug is arranged at the air blowing hole, a second chemical feeding port and a water outlet are formed in the side lower portion of the treatment box, and a filter screen is arranged inside the water outlet.

2. The shale gas produced water filtering and disinfecting treatment device according to claim 1, characterized in that: and sealing rings are arranged between the first pressing plate and the first sludge discharge port and between the second pressing plate and the second sludge discharge port.

3. The shale gas produced water filtering and disinfecting treatment device according to claim 1, characterized in that: and a buffer layer is arranged on the side surface of the bracket.

4. The shale gas produced water filtering and disinfecting treatment device according to claim 1, characterized in that: the diameter of the snake-shaped water channel is smaller than that of the drain hole II, and a plurality of narrow areas are arranged in the snake-shaped water channel.

5. The shale gas produced water filtering and disinfecting treatment device according to claim 1, characterized in that: and a detection port is arranged below the treatment box.

6. The shale gas produced water filtration and disinfection treatment device of claim 5, wherein: and a pipeline is arranged below the side of the treatment box and communicated with the second packing auger, and a water pump is arranged on the pipeline.

7. The shale gas produced water filtering and disinfecting treatment device according to claim 1, characterized in that: the water outlet is provided with a control valve.

8. The shale gas produced water filtering and disinfecting treatment device according to claim 1, characterized in that: and an overhaul window is arranged at the water outlet.