CN215161879U - Shale gas produced water treatment facility - Google Patents
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- CN215161879U CN215161879U CN202121240348.XU CN202121240348U CN215161879U CN 215161879 U CN215161879 U CN 215161879U CN 202121240348 U CN202121240348 U CN 202121240348U CN 215161879 U CN215161879 U CN 215161879U
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Abstract
The utility model discloses a shale gas production water treatment facilities relates to waste water treatment technical field. The shale gas produced water treatment equipment comprises a regulating device, a magnetic dense medium purifying device, a filtering and sterilizing device and an advanced treatment device. Adjusting device is connected with magnetism dense medium purifier, magnetism dense medium purifier passes through the filtration degassing unit and is connected with deep treatment device, magnetism dense medium purifier is used for handling shale gas extraction water, and send into the filtration degassing unit with the primary treatment water that generates, the filtration degassing unit is used for filtering and disinfecting primary treatment water, and send into deep treatment device with the secondary treatment water that generates, deep treatment device is used for purifying secondary treatment water, and generate the purified water. The utility model provides a shale gas production water treatment facilities can carry out purification treatment to shale gas production water, and purification efficiency is high, and purifying effect is good, guarantees that the quality of water after handling is up to standard.
Description
Technical Field
The utility model relates to a waste water treatment technical field particularly, relates to a shale gas production water treatment facilities.
Background
At present, shale gas development is a new bright spot for global oil and gas resource development, in the process of shale gas exploitation, a hydraulic fracturing technology is utilized to fracture an underground rock stratum and release shale gas therein, and water injected into the rock stratum can be flowback at different stages of shale gas production, namely, produced water. Shale gas produced water has the characteristics of complex water quality components, large water yield, low salt content, various pollutants and the like, and the environment pollution to soil and surface water can be caused by improper treatment, so that the social problem is caused. But the purification efficiency of the produced water is low, the purification effect is poor, and the water quality after treatment can not completely reach the national pollutant discharge concentration standard.
In view of this, it is very important to design and manufacture a shale gas produced water treatment device with good purification effect, especially in shale gas exploitation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a shale gas production water treatment facilities can carry out purification treatment to shale gas production water, and purification efficiency is high, and purifying effect is good, guarantees that the quality of water after handling is up to standard.
The utility model is realized by adopting the following technical scheme.
The utility model provides a shale gas extraction water treatment facilities, including adjusting device, magnetism dense medium purifier, filtration degassing unit and advanced treatment unit, adjusting device is connected with magnetism dense medium purifier, adjusting device is used for adjusting the pH valve of shale gas extraction water to neutral, magnetism dense medium purifier passes through the filtration degassing unit and is connected with advanced treatment unit, magnetism dense medium purifier is used for handling shale gas extraction water, and send the primary treatment water that generates into filtration degassing unit, filtration degassing unit is used for filtering and disinfecting primary treatment water, and send the secondary treatment water that generates into advanced treatment unit, advanced treatment unit is used for purifying secondary treatment water, and generate the purifying water.
Optionally, the magnetic dense medium purification device comprises a coagulation reactor and a magnetic dense medium clarifier, the coagulation reactor is connected with the magnetic dense medium clarifier, the magnetic dense medium clarifier is connected with the filtering and disinfecting device, the coagulation reactor is used for coagulating the magnetic dense medium and the shale gas produced water and sending the generated coagulated water into the magnetic dense medium clarifier, and the magnetic dense medium clarifier is used for settling the coagulated water and generating primary treated water.
Optionally, the shale gas produced water treatment equipment further comprises a magnetic dense medium recovery device, the magnetic dense medium recovery device is connected with the coagulation reactor and the magnetic dense medium clarifier at the same time, the magnetic dense medium clarifier is further used for sending sediment generated by the settled and coagulated water into the magnetic dense medium recovery device, and the magnetic dense medium recovery device is used for recovering the magnetic dense medium in the sediment and sending the magnetic dense medium back to the coagulation reactor.
Optionally, the shale gas produced water treatment equipment further comprises a first sludge tank, the first sludge tank is connected with the magnetic dense medium recovery device, and the magnetic dense medium recovery device is further used for discharging sludge generated by recovering sediments into the first sludge tank.
Optionally, the shale gas produced water treatment equipment further comprises a dewatering device, the dewatering device is connected with the first sludge tank and the adjusting device at the same time, and the dewatering device is used for dewatering sludge in the first sludge tank and sending produced dewatering water back to the adjusting device.
Optionally, the dewatering device comprises a driving motor, a casing, a rotating shaft and a helical blade, the driving motor is in transmission connection with the rotating shaft, the rotating shaft is rotatably installed in the casing, the helical blade is fixedly connected to the peripheral surface of the rotating shaft, and the helical blade can be driven by the driving motor to rotate so as to dewater the sludge sent into the casing.
Optionally, the filtering and disinfecting device comprises a filter and a disinfector, the magnetic dense medium purifying device is connected with the filter, the filter is connected with the advanced treatment device through the disinfector, the filter is used for filtering the primary treatment water, and the disinfector is used for disinfecting the primary treatment water.
Optionally, the shale gas produced water treatment equipment further comprises a second sludge tank, the second sludge tank is connected with a filter, and the filter is used for discharging sludge generated by filtering primary treated water into the second sludge tank.
Optionally, the advanced treatment unit comprises an ultrafiltration mechanism and a reverse osmosis mechanism, the filtration and disinfection unit is connected with the reverse osmosis mechanism through the ultrafiltration mechanism, the ultrafiltration mechanism is used for performing ultrafiltration on the secondary treated water so as to enable the secondary treated water to reach the reverse osmosis water inlet requirement, and the reverse osmosis mechanism is used for purifying the secondary treated water and generating purified water.
Optionally, the shale gas produced water treatment equipment further comprises a third sludge tank, the third sludge tank is connected with a reverse osmosis mechanism, and the reverse osmosis mechanism is used for discharging concentrated liquid generated by purifying secondary treated water into the third sludge tank.
The utility model provides a shale gas extraction water treatment facilities has following beneficial effect:
the utility model provides a shale gas extraction water treatment facilities, adjusting device is connected with magnetism dense medium purifier, adjusting device is used for adjusting the pH valve of shale gas extraction water to neutral, magnetism dense medium purifier passes through the filtration degassing unit and is connected with deep treatment device, magnetism dense medium purifier is used for handling shale gas extraction water, and send the primary treatment water that generates into the filtration degassing unit, the filtration degassing unit is used for filtering and disinfecting primary treatment water, and send the secondary treatment water that generates into deep treatment device, deep treatment device is used for purifying secondary treatment water, and generate the purification water. Compared with the prior art, the utility model provides a shale gas production water treatment facilities is owing to adopted the magnetism dense medium purifier who is connected with adjusting device and the deep treatment device who is connected with the filtration degassing unit, so can carry out purification treatment to shale gas production water, purification efficiency is high, and purifying effect is good, and the quality of water after guaranteeing to handle is up to standard.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a block diagram of a shale gas produced water treatment apparatus provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dewatering device in shale gas produced water treatment equipment provided by an embodiment of the utility model.
Icon: 100-shale gas produced water treatment equipment; 110-an adjustment device; 120-magnetic dense medium purification device; 121-a coagulation reactor; 122-magnetic dense medium clarifier; 130-a filter sterilization device; 131-a filter; 132-a sterilizer; 140-a deep treatment device; 141-an ultrafiltration mechanism; 142-a reverse osmosis mechanism; 150-magnetic dense medium recovery unit; 160-presetting a sludge tank; 170-a dehydration device; 171-a drive motor; 172-a housing; 173-a rotating shaft; 174-helical blades; 180-third sludge tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.
Referring to fig. 1 and fig. 2 in combination, an embodiment of the present invention provides a shale gas produced water treatment apparatus 100 for treating shale gas produced water. The shale gas produced water purification device can purify shale gas produced water, is high in purification efficiency and good in purification effect, and ensures that the treated water quality reaches the standard.
In this embodiment, the shale gas produced water treatment apparatus 100 is used to perform purification treatment on produced water produced by producing shale gas, and make the produced purified water meet the use standard of urban service water. But not limited thereto, in other embodiments, the shale gas produced water treatment apparatus 100 may also be used for purifying other wastewater, and the application scenario of the shale gas produced water treatment apparatus 100 is not particularly limited.
The shale gas produced water treatment equipment 100 comprises a regulating device 110, a magnetic dense medium purifying device 120, a filtering and sterilizing device 130, an advanced treatment device 140, a magnetic dense medium recycling device 150, a first sludge tank, a dehydrating device 170, a second sludge tank and a third sludge tank 180. The adjusting device 110 is connected with the magnetic dense medium purifying device 120, the shale gas produced water is sent to the adjusting device 110, and the adjusting device 110 is used for adjusting the pH value of the shale gas produced water to be neutral and sending the shale gas produced water to the magnetic dense medium purifying device 120. The magnetic dense medium purification device 120 is connected with the advanced treatment device 140 through the filtering and disinfecting device 130, the magnetic dense medium purification device 120 is used for treating the shale gas produced water and sending the generated primary treated water into the filtering and disinfecting device 130, the filtering and disinfecting device 130 is used for filtering and disinfecting the primary treated water and sending the generated secondary treated water into the advanced treatment device 140, and the advanced treatment device 140 is used for purifying the secondary treated water and generating purified water. Therefore, the shale gas produced water treatment equipment 100 sequentially performs purification treatment of multiple steps of pH value adjustment, magnetic dense medium purification, filtration and disinfection and advanced treatment on the shale gas produced water, so that the generated purified water reaches the standard, and has high purification efficiency and good purification effect.
It should be noted that the magnetic dense medium recovery device 150 is respectively connected with the magnetic dense medium purification device 120 and the first sludge tank, the magnetic dense medium recovery device 150 is used for recovering the magnetic dense medium, so as to recycle the magnetic dense medium, reduce the purification cost, and the magnetic dense medium recovery device 150 is also used for discharging the sludge into the first sludge tank. Dewatering device 170 is connected with first sludge impoundment, and dewatering device 170 is used for carrying out dehydration to the mud in the first sludge impoundment to carry out the outward transport of mud and discharge.
Further, the filter sterilizing device 130 is connected to a second sludge tank, and the filter sterilizing device 130 is used for discharging sludge into the second sludge tank. The dewatering device 170 is connected with the second sludge tank, and the dewatering device 170 is also used for dewatering the sludge in the second sludge tank so as to facilitate outward transportation and discharge of the sludge. The advanced treatment device 140 is connected with the third sludge tank 180, and the advanced treatment device 140 is used for discharging the concentrated solution into the third sludge tank 180.
In this embodiment, the first sludge tank and the second sludge tank are the same sludge tank, which is called as a preset sludge tank 160, and the sludge produced by the magnetic dense medium recovery device 150 and the sludge produced by the filtering and disinfecting device 130 are both discharged into the preset sludge tank 160. Dewatering device 170 is connected with presetting sludge impoundment 160, and dewatering device 170 is used for presetting sludge in sludge impoundment 160 and carries out dehydration to carry out the outward transport of mud and discharge. However, the method is not limited thereto, and in other embodiments, the first sludge tank and the second sludge tank may be different sludge tanks, and the number of the dewatering devices 170 is two, wherein one of the dewatering devices 170 is used for dewatering the sludge in the first sludge tank, and the other of the dewatering devices 170 is used for dewatering the sludge in the second sludge tank.
It should be noted that the dewatering device 170 is connected to the adjusting device 110, the dewatering device 170 generates a large amount of dewatering water during the dewatering treatment of the sludge, and the dewatering device 170 is further configured to send the dewatering water back to the adjusting device 110, so as to recycle the dewatering water and reduce the purification cost.
The magnetic dense medium purification device 120 comprises a coagulation reactor 121 and a magnetic dense medium clarifier 122. The adjusting device 110 is connected with the coagulation reactor 121 through a water pump, and the water pump is used for pumping the shale gas produced water with neutral pH value in the adjusting device 110 into the coagulation reactor 121. The coagulation reactor 121 is connected with a magnetic dense medium clarifier 122, and the magnetic dense medium clarifier 122 is connected with a filtering and disinfecting device 130. The coagulation reactor 121 is used for coagulating the magnetic dense medium and the shale gas produced water, and sending the generated coagulated water to the magnetic dense medium clarifier 122. The magnetic dense medium clarifier 122 is used for settling the coagulated water and generating primary treated water, and the magnetic dense medium clarifier 122 is also used for sending the primary treated water to the filtering and disinfecting device 130.
In this embodiment, the magnetic dense medium recovery device 150 is connected to the coagulation reactor 121 and the magnetic dense medium clarifier 122 at the same time, the magnetic dense medium clarifier 122 is further configured to send sediment generated by the settled and coagulated water to the magnetic dense medium recovery device 150, and the magnetic dense medium recovery device 150 is configured to recover the magnetic dense medium in the sediment and send the magnetic dense medium back to the coagulation reactor 121, so as to recycle the magnetic dense medium.
It should be noted that, in the process of purifying the shale gas produced water by using the magnetic dense medium, the neutral shale gas produced water is firstly pumped into the coagulation reactor 121; then adding alkali, a flocculating agent and a magnetic dense medium into the coagulation reactor 121, stirring and coagulating the shale gas produced water and the magnetic dense medium by using the coagulation reactor 121 to generate coagulated water, wherein suspended matters in the water body are combined with the magnetic dense medium in the process, and magnetic flocs are generated; then sending the coagulated water into a magnetic dense medium clarifier 122, and settling the coagulated water by using the magnetic dense medium clarifier 122 to obtain a sediment and primary treated water, wherein the magnetic floc is contained in the sediment; then sending the sediment into a magnetic dense medium recovery device 150, and sending the primary treated water into a filtering and sterilizing device 130; then, the magnetic dense medium recovery device 150 recovers and treats the sediment to obtain a magnetic dense medium and sludge; finally, the magnetic dense medium is sent back to the coagulation reactor 121 for recycling, and the sludge is discharged into a preset sludge tank 160.
In this embodiment, dewatering device 170 is connected with presetting sludge impoundment 160 and adjusting device 110 simultaneously, and dewatering device 170 is used for carrying out dehydration to the mud of presetting in the sludge impoundment 160, obtains the mud cake and the water of dehydrating, transports the mud cake outward and discharges, sends the water of dehydrating back to adjusting device 110 and carries out reuse.
The dehydrating apparatus 170 includes a driving motor 171, a housing 172, a rotating shaft 173, and a screw blade 174. The driving motor 171 is in transmission connection with the rotating shaft 173, the rotating shaft 173 is rotatably installed in the housing 172, and the driving motor 171 can drive the rotating shaft 173 to rotate relative to the housing 172. The spiral blade 174 is fixedly connected to the circumferential surface of the rotating shaft 173, and the spiral blade 174 can be rotated by the driving motor 171 to dehydrate the sludge fed into the housing 172. Specifically, during the operation of the dewatering device 170, the sludge is continuously fed into the housing 172, and the driving motor 171 drives the helical blade 174 to rotate through the rotating shaft 173, so as to drive the sludge to continuously rotate forward, during which the sludge is extruded to form a sludge cake, and the extruded water is the dewatering water.
The filter sterilizing device 130 includes a filter 131 and a sterilizer 132. The magnetic dense medium purification device 120 is connected with a filter 131, and the filter 131 is connected with a deep treatment device 140 through a sterilizer 132. The magnetic dense medium purification device 120 is used for feeding the primary treated water into the filter 131, the filter 131 is used for filtering the primary treated water, and the sterilizer 132 is used for sterilizing the primary treated water and feeding the generated secondary treated water into the advanced treatment device 140.
In this embodiment, the filter 131 is connected to the preset sludge tank 160, and the filter 131 is used for discharging the sludge generated by filtering the primary treatment water into the preset sludge tank 160, so as to facilitate the dehydration of the sludge and the reuse of the dehydrated water.
In the process of filtering and disinfecting the primary treated water by using the filtering and disinfecting device 130, the primary treated water is firstly fed into the filter 131, the primary treated water is filtered by using the filter 131, impurities in the primary treated water are filtered out to form sludge, the sludge is fed into the preset sludge tank 160, and the filtered primary treated water is fed into the disinfector 132; the filtered primary treated water is sterilized by the sterilizer 132, and the resultant secondary treated water is sent to the advanced treatment apparatus 140.
In this embodiment, the filter 131 is a dow fine particle filter, and the filter 131 has high filtering accuracy to further remove suspended substances in the primary treatment water. Specifically, the number of the filters 131 is multiple, the multiple filters 131 are connected in parallel, the pipelines and the valves are connected according to the use specification, the automatic control system is redesigned, and automatic operation is realized, so that the purification efficiency and the effluent quality are improved.
In this embodiment, the sterilizer 132 is a slow-release sterilizer, and the primary treated water is sterilized by adding chlorine tablets. Specifically, the sterilizer 132 employs an automatic slow-release delayed pressure chlorination process, takes a strong chlorine solid medicament with the content of more than 90% as a main raw material, and adds a sterilization solution generated by reasonably mixing water and the medicament into primary treated water to realize the sterilization effect.
The advanced treatment unit 140 includes an ultrafiltration mechanism 141 and a reverse osmosis mechanism 142. The filtering and sterilizing device 130 is connected with the reverse osmosis mechanism 142 through the ultrafiltration mechanism 141, the filtering and sterilizing device 130 is used for sending the secondary treated water into the ultrafiltration mechanism 141, the ultrafiltration mechanism 141 is used for performing ultrafiltration on the secondary treated water so that the secondary treated water meets the requirement of reverse osmosis water inlet, and the reverse osmosis mechanism 142 is used for purifying the secondary treated water and generating purified water.
In this embodiment, the reverse osmosis mechanism 142 is connected to the third sludge tank 180, and the reverse osmosis mechanism 142 is used for discharging the concentrated solution generated by purifying the secondary treated water into the third sludge tank 180, so as to perform the concentrated treatment on the concentrated solution.
In the process of performing advanced purification treatment on the secondary treated water by using the advanced treatment device 140, the secondary treated water is firstly sent to the ultrafiltration mechanism 141, and the ultrafiltration mechanism 141 is used for performing ultrafiltration on the secondary treated water to remove suspended matters, COD (reduced substances to be oxidized in a water sample) and the like in the secondary treated water, so that the secondary treated water meets the requirement of reverse osmosis water inlet; then, the ultrafiltered secondary treated water is sent to a reverse osmosis mechanism 142, the reverse osmosis mechanism 142 is used for purifying the secondary treated water, the salt content, COD (chemical oxygen demand) and the like in the secondary treated water are further removed, purified water is generated, and in the process, the concentrated solution generated by the reverse osmosis mechanism 142 is discharged into a third sludge tank 180 so as to be conveniently and intensively treated subsequently.
In this embodiment, the ultrafiltration membrane in the ultrafiltration mechanism 141 is an immersed flat membrane, and the ultrafiltration mechanism 141 performs ultrafiltration on the secondary treated water by using a high-efficiency low-pollution purification technology integrating separation and concentration, and has the characteristics of simple operation, convenient maintenance, low energy consumption, strong adaptability and the like.
In this embodiment, reverse osmosis mechanism 142 adopts disc tube type reverse osmosis technique to purify secondary treatment water, and reverse osmosis mechanism 142 can further separate the great molecule organic matter of difficult degradation and partial ammonia nitrogen, further carries out desalination simultaneously for COD, total nitrogen content, salt content reach standard requirement, can also get rid of whole suspended solid, solute and colloid from secondary treatment aquatic, and purifying effect is good.
The embodiment of the utility model provides a shale gas produced water treatment facility 100, adjusting device 110 is connected with magnetism dense medium purifier 120, adjusting device 110 is used for adjusting the pH valve of shale gas produced water to neutral, magnetism dense medium purifier 120 is connected with advanced treatment unit 140 through filter disinfection device 130, magnetism dense medium purifier 120 is used for handling shale gas produced water, and send the primary treatment water that generates into filter disinfection device 130, filter disinfection device 130 is used for filtering and disinfecting primary treatment water, and send the secondary treatment water that generates into advanced treatment unit 140, advanced treatment unit 140 is used for purifying the secondary treatment water, and generate the purified water. Compared with the prior art, the utility model provides a shale gas production water treatment facilities 100 is owing to adopted the magnetism dense medium purifier 120 of being connected with adjusting device 110 and the advanced treatment unit 140 of being connected with filtering and disinfecting device 130, so can carry out purification treatment to shale gas production water, and purification efficiency is high, and purifying effect is good, guarantees that the quality of water after handling is up to standard.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a shale gas production water treatment facilities, its characterized in that includes adjusting device, magnetism dense medium purifier, filtration degassing unit and advanced treatment unit, adjusting device with magnetism dense medium purifier is connected, adjusting device is used for adjusting the pH valve of shale gas production water to neutral, magnetism dense medium purifier pass through filtration degassing unit with advanced treatment unit connects, magnetism dense medium purifier is used for right shale gas production water is handled to send the primary treatment water that will generate into filtration degassing unit, filtration degassing unit is used for right primary treatment water filters and disinfects, and send the secondary treatment water that will generate into advanced treatment unit, advanced treatment unit is used for right secondary treatment water purifies, and the formation purification water.
2. The shale gas produced water treatment equipment according to claim 1, wherein the magnetic dense medium purification device comprises a coagulation reactor and a magnetic dense medium clarifier, the coagulation reactor is connected with the magnetic dense medium clarifier, the magnetic dense medium clarifier is connected with the filtering and disinfecting device, the coagulation reactor is used for coagulating magnetic dense medium and the shale gas produced water and sending the generated coagulated water to the magnetic dense medium clarifier, and the magnetic dense medium clarifier is used for settling the coagulated water and generating the primary treated water.
3. The shale gas produced water treatment equipment according to claim 2, further comprising a magnetic dense medium recovery device, wherein the magnetic dense medium recovery device is connected with the coagulation reactor and the magnetic dense medium clarifier simultaneously, the magnetic dense medium clarifier is further used for sending sediment generated by settling the coagulated water to the magnetic dense medium recovery device, and the magnetic dense medium recovery device is used for recovering the magnetic dense medium in the sediment and sending the magnetic dense medium back to the coagulation reactor.
4. The shale gas produced water treatment equipment according to claim 3, further comprising a first sludge pond, wherein the first sludge pond is connected with the magnetic dense medium recovery device, and the magnetic dense medium recovery device is further used for discharging sludge generated by recovering the sediment into the first sludge pond.
5. The shale gas produced water treatment equipment according to claim 4, further comprising a dehydration device, wherein the dehydration device is connected with the first sludge tank and the adjusting device at the same time, and is used for dehydrating the sludge in the first sludge tank and sending the generated dehydrated water back to the adjusting device.
6. The shale gas produced water treatment equipment according to claim 5, wherein the dewatering device comprises a driving motor, a casing, a rotating shaft and a helical blade, the driving motor is in transmission connection with the rotating shaft, the rotating shaft is rotatably installed in the casing, the helical blade is fixedly connected to the peripheral surface of the rotating shaft, and the helical blade can be driven by the driving motor to rotate so as to dewater the sludge fed into the casing.
7. The shale gas produced water treatment equipment of claim 1, wherein the filtration and disinfection device comprises a filter and a disinfector, the magnetic dense medium purification device is connected with the filter, the filter is connected with the advanced treatment device through the disinfector, the filter is used for filtering the primary treated water, and the disinfector is used for disinfecting the primary treated water.
8. The shale gas produced water treatment apparatus according to claim 7, further comprising a second sludge tank, wherein the second sludge tank is connected with the filter, and the filter is used for discharging sludge generated by filtering the primary treated water into the second sludge tank.
9. The shale gas produced water treatment equipment according to claim 1, wherein the advanced treatment device comprises an ultrafiltration mechanism and a reverse osmosis mechanism, the filtration and disinfection device is connected with the reverse osmosis mechanism through the ultrafiltration mechanism, the ultrafiltration mechanism is used for performing ultrafiltration on the secondary treated water so that the secondary treated water meets the requirement of reverse osmosis water inflow, and the reverse osmosis mechanism is used for purifying the secondary treated water and generating the purified water.
10. The shale gas produced water treatment equipment according to claim 9, further comprising a third sludge tank, wherein the third sludge tank is connected with the reverse osmosis mechanism, and the reverse osmosis mechanism is used for discharging concentrated liquid generated by purifying the secondary treated water into the third sludge tank.
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