CN214781211U - Two-stage reverse osmosis treatment system for landfill leachate and reverse osmosis device thereof - Google Patents
Two-stage reverse osmosis treatment system for landfill leachate and reverse osmosis device thereof Download PDFInfo
- Publication number
- CN214781211U CN214781211U CN202121145417.9U CN202121145417U CN214781211U CN 214781211 U CN214781211 U CN 214781211U CN 202121145417 U CN202121145417 U CN 202121145417U CN 214781211 U CN214781211 U CN 214781211U
- Authority
- CN
- China
- Prior art keywords
- reverse osmosis
- pipe
- stage
- water inlet
- plunger pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model belongs to the technical field of sewage treatment device. The two-stage reverse osmosis treatment system comprises two reverse osmosis devices, wherein a water inlet end of a first-stage variable frequency plunger pump is communicated with a raw water pipe, a first-stage permeate liquid outlet pipe is communicated with water inlet ends of two variable frequency plunger pumps, and a second-stage concentrate outlet pipe is communicated with a water inlet end of the first-stage variable frequency plunger pump; the reverse osmosis device comprises a variable frequency plunger pump, a variable frequency circulating pump and a reverse osmosis membrane group which are sequentially connected in series, wherein the variable frequency plunger pump and the variable frequency circulating pump are both arranged on a water inlet pipe of the reverse osmosis membrane group; and a concentrated solution return pipe is also arranged between the variable-frequency plunger pump and the variable-frequency circulating pump, one end of the concentrated solution return pipe is communicated with the water inlet pipe, and the other end of the concentrated solution return pipe is communicated with the concentrated solution outlet pipe. The utility model discloses a return the concentrated hydraulic pressure of second grade to the one-level and intake the end and participate in production circulating filtration again, avoided the emission of second grade concentrate, total output equals total inflow and subtracts one-level reverse osmosis concentrate emission, has improved total output water yield.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment device, a landfill leachate two-stage reverse osmosis treatment system and reverse osmosis unit thereof is related to.
Background
The domestic landfill leachate mainly comprises fresh leachate generated by a waste incineration power plant and aged leachate generated by a landfill. The treatment capacity of the percolate of the waste incineration power plant is stable and cannot exceed the design limit value, and the percolate is relatively fresh and is easy to carry out biochemical treatment on the landfill site, so that the treatment process can be cured into two parts: biochemical treatment process and advanced treatment process. The landfill leachate is seriously influenced by time, the landfill time is increased, the concentration of organic matters in the landfill leachate is reduced, and organic compounds with poor biodegradability and large relative molecular mass are dominant, which shows that the efficiency of treating the landfill leachate by a biological method is lower and lower; the influence of manual-season rainfall on the quality of percolate in the landfill site has large fluctuation, the change rule is difficult to determine, and the quality of percolate is unstable, so that a treatment system is required to have strong impact load resistance; the landfill leachate has the characteristics of high organic content, complex components, high heavy metal content, high chromaticity, high salt content and the like, and the high-concentration leachate is extremely difficult to treat and is also a difficult problem in the field of leachate treatment.
The net pipe type reverse osmosis (STRO) membrane technology removes inorganic ions, bacteria, viruses, organic matters, colloid and other impurities in raw water to obtain high-quality purified water, overcomes the defects of other similar products, greatly reduces the common scaling problem in a reverse osmosis component due to excellent fluid dynamics design, can directly receive raw leachate without pretreatment and biochemical treatment, has obvious treatment effect on the leachate with high concentration of COD, high concentration of ammonia nitrogen and high salt content, and can greatly improve the quality of outlet water. It is suitable for treating waste water and material with high concentration and has high pollution resistance.
At present, a net pipe type reverse osmosis equipment STRO system is used as a link in a percolate treatment process and is matched with other process equipment for use. And (3) filtering the percolate after the reaction of the biochemical system by using an internal MBR (membrane bioreactor) or an external ultrafiltration system, and passing the permeate through a network management type reverse osmosis device. Or a 'net pipe type reverse osmosis + roll type reverse osmosis' two-stage reverse osmosis process is adopted, and the process is directly adopted for filtration without biochemical reaction.
The traditional landfill leachate treatment process has low utilization rate and serious waste. Various process equipment are combined for use, and each set of equipment has standard water yield, so that the total water production efficiency is low, the concentrated solution is increased, and the process flow has defects.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at solving the problem that current filtration liquid processing system water yield is low, provide a landfill leachate two-stage reverse osmosis processing system and reverse osmosis unit thereof.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a reverse osmosis device comprises a variable frequency plunger pump, a variable frequency circulating pump and a reverse osmosis membrane group which are sequentially connected in series, wherein a water inlet pipe for introducing liquid to be filtered, a concentrated solution outlet pipe for discharging concentrated solution generated by the reverse osmosis membrane group and a permeate outlet pipe for discharging permeate generated by the reverse osmosis membrane group are arranged on the reverse osmosis membrane group; the variable-frequency plunger pump and the variable-frequency circulating pump are arranged on the water inlet pipe and are communicated with the reverse osmosis membrane group through the water inlet pipe; still be equipped with the concentrate back flow between frequency conversion plunger pump and the frequency conversion circulating pump, concentrate back flow one end and inlet tube intercommunication, the other end and concentrate outlet pipe intercommunication.
In the basic scheme, part of the concentrated solution is introduced into the water inlet pipe for secondary filtration, so that the water yield of the reverse osmosis device is improved; meanwhile, when the inflow does not meet the water quantity required by the reverse osmosis device, part of the concentrated solution flows back to the reverse osmosis device through the variable-frequency circulating pump to supplement the inflow so as to ensure that the inflow has enough flow and flow velocity and avoid the pollution of the reverse osmosis device.
Further, the reverse osmosis membrane group is a plurality of STRO membrane groups or DTRO membrane groups connected in parallel, and has the advantages that: the number of the reverse osmosis membrane groups can be adjusted according to the water production requirement, so that the applicability is stronger; the reverse osmosis membrane group can adopt a DTRO membrane group or a STRO membrane group; the STRO membrane group can directly receive raw leachate without pretreatment and biochemical treatment, has obvious treatment effect on high-concentration COD, high-concentration ammonia nitrogen and high-salinity leachate, can greatly improve the quality of effluent, is suitable for treating wastewater with higher concentration, and has strong pollution resistance.
Further, the play water end of frequency conversion plunger pump is equipped with bumper shock absorber, beneficial effect: the frequency conversion plunger pump provides sufficient inflow and osmotic pressure for the system, all has a bumper shock absorber behind every frequency conversion plunger pump for absorb the pressure pulse that the frequency conversion plunger pump produced, provide steady pressure for reverse osmosis unit.
Further, still be equipped with pressure regulating valve on the concentrate outlet pipe, pressure regulating valve is located after concentrate back flow and the concentrate goes out water piping connection department, beneficial effect: the pressure regulating valve is used for increasing the pressure in the reverse osmosis device so as to ensure the water yield
The utility model provides a landfill leachate two-stage reverse osmosis treatment system, includes two foretell reverse osmosis unit, is one-level reverse osmosis unit, second grade reverse osmosis unit respectively, one-level reverse osmosis unit's frequency conversion plunger pump is intake and is held and communicate with the former water pipe, one-level reverse osmosis unit's permeate liquid outlet pipe and second grade reverse osmosis unit's frequency conversion plunger pump's the end intercommunication of intaking, second grade reverse osmosis unit's concentrate outlet pipe and one-level reverse osmosis unit's frequency conversion plunger pump are intake and are held the intercommunication.
The utility model discloses in, the inlet tube of one-level reverse osmosis unit is reintroduced to the concentrate that produces second grade reverse osmosis unit, carries to one-level reverse osmosis unit and participates in production circulation and filters, has avoided the direct emission of second grade concentrate, and the total output water volume equals the total intake to subtract the one-level concentrate emission in numerical value to the total output water yield of see-through liquid has been improved.
Further, second grade reverse osmosis unit's concentrate outlet pipe still with second grade reverse osmosis unit's frequency conversion plunger pump intake end intercommunication, beneficial effect: the secondary concentrated solution is used for supplementing the flow of the primary permeate, and the flow is increased through a variable frequency plunger pump, so that the inflow and the pressure of the secondary reverse osmosis device are ensured.
Further, one-level reverse osmosis unit's frequency conversion plunger pump is intake and is held still to be equipped with and be used for coarse filtration's safety filter, beneficial effect: the cartridge filter is used for removing fine solid particles in raw water so as to avoid mechanical damage to a variable-frequency plunger pump and a membrane component at the rear end.
Further, the water inlet end of the cartridge filter is also provided with a scale inhibitor injection pipe, and the scale inhibitor injection pipe is communicated with the raw water pipe; the scale inhibitor injection pipe is provided with a scale inhibitor injection valve, and has the advantages that: and scale inhibitor is injected into raw water to prevent scaling.
Further, water inlet and delivery port on safety filter ware, frequency conversion plunger pump, the frequency conversion circulating pump all are equipped with pressure sensor, beneficial effect: the pressure sensor is used for detecting the pressure change of the pipeline, so that the pressure is convenient to adjust and kept in an optimal range.
The cleaning device further comprises a cleaning box, wherein a cleaning water outlet pipe and a cleaning water inlet pipe are arranged on the cleaning box; the cleaning water outlet pipe is respectively communicated with the water inlet end of the cartridge filter and the water inlet end of the variable-frequency plunger pump of the secondary reverse osmosis device; wash the inlet tube and communicate with one-level reverse osmosis unit's concentrate outlet pipe, second grade reverse osmosis unit's permeate liquid outlet pipe respectively, beneficial effect: the cleaning box is used for containing chemical cleaning agents and carrying out chemical cleaning through the whole device.
The beneficial effects of the utility model reside in that:
1) the utility model discloses well reverse osmosis unit can adopt DTRO membrane group or STRO membrane group, and two membrane groups are established ties, but direct processing landfill leachate, do not need the biochemical system of front end, also need not use with other process units combination, have saved a series of expenses of construction biochemical reaction pond, outfit other process units etc..
2) The utility model discloses in the concentrate part backward flow that produces reverse osmosis unit to the inlet tube, filter once more, reduced the discharge capacity of concentrate, improved the water yield.
3) The utility model discloses but well system's equipment independent processing landfill leachate, can integrate in chassis or container, small, mobility are strong, can handle old and useless landfill leachate at random, and the utilization ratio is higher, the flexibility is stronger, has also reduced extra economic input simultaneously.
4) The utility model discloses a return one-level reverse osmosis unit's the end of intaking with second grade reverse osmosis unit's concentrated hydraulic pressure and participate in production circulation again and filter, avoided the emission of second grade concentrate, total water yield equals total inflow in numerical value and subtracts one-level reverse osmosis concentrate discharge, compares in traditional process systems, has improved the total water yield of permeate liquid, energy saving and emission reduction more.
5) The utility model discloses an add the frequency conversion plunger pump, the frequency conversion plunger pump can be according to pressure, the inflow change in the system, carries out real-time adjustment to satisfy the actual production demand, ensure the system reliable and stable operation; increase the operating condition that the frequency conversion circulating pump can be based on the reverse osmosis membrane group, match more accurate flow and osmotic pressure, avoid the reverse osmosis membrane group to receive the damage or unmatched flow influence water yield because of too big pressure, played the life of extension membrane and the effect of protection equipment flexible operation.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic diagram of the arrangement of the treatment system in the present invention.
Reference numerals: 1-a raw water pipe; 2-a cartridge filter; 3-power frequency plunger pump; 4-first-stage variable frequency plunger pump; 5-first-stage water inlet pipe; 6-first-stage STRO membrane group; 7-first-stage permeate outlet pipe; 8-first-stage pressure regulating valve; 9-first-stage variable frequency circulating pump; 10-first-stage concentrated solution return pipe; 11-a first-stage concentrated solution outlet pipe; 12-a secondary water inlet pipe; 13-a two-stage variable frequency plunger pump; 14-a two-stage variable frequency circulating pump; 15-two-stage STRO membrane group; 16-a secondary permeate outlet pipe; 17-a second-stage concentrated solution return pipe; 18-the second-stage permeate liquid returns to clean the box pipe; 19-a secondary pressure regulating valve; 20-a secondary concentrated solution outlet pipe; 21-returning the second-stage concentrated solution to the secondary tube; 22-returning the second-stage concentrated solution to the first-stage pipe; 23-returning the second-stage concentrated solution to the cleaning box pipe; 24-a washing pump; 25-secondary cleaning of the water outlet pipe; 26-pneumatic valves; 27-a scale inhibitor injection tube; 28-secondary permeate liquid outer discharge pipe; 29-returning the first-stage concentrated solution to a cleaning box pipe; 30-first-stage cleaning of a water outlet pipe; 31-washing tank.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1, a two-stage reverse osmosis treatment system for landfill leachate includes two reverse osmosis devices and a cleaning tank 31; the two reverse osmosis devices are respectively a first-stage reverse osmosis device and a second-stage reverse osmosis device; the primary reverse osmosis device comprises a primary variable frequency plunger pump 4, a primary variable frequency circulating pump 9 and a primary STRO membrane group 6 which are sequentially connected in series; the primary STRO membrane group 6 is provided with a primary water inlet pipe 5, a primary concentrated solution outlet pipe 11 and a primary permeate outlet pipe 7; the primary variable frequency plunger pump 4 and the primary variable frequency circulating pump 9 are both arranged on the primary water inlet pipe 5 and are communicated with the primary STRO membrane group 6 through the primary water inlet pipe 5; a primary concentrated solution return pipe 10 is also arranged between the primary variable frequency plunger pump 4 and the primary variable frequency circulating pump 9, one end of the primary concentrated solution return pipe 10 is communicated with the primary water inlet pipe 5, and the other end is communicated with a primary concentrated solution water outlet pipe 11; the first-stage concentrated solution outlet pipe 11 is also provided with a first-stage pressure regulating valve 8, and the first-stage pressure regulating valve 8 is positioned behind the connection part of the first-stage concentrated solution return pipe 10 and the first-stage concentrated solution outlet pipe 11.
The secondary reverse osmosis device comprises a secondary variable frequency plunger pump 13, a secondary variable frequency circulating pump 14 and a secondary STRO membrane group 15 which are sequentially connected in series, wherein a secondary water inlet pipe 12, a secondary concentrated solution outlet pipe 20 and a secondary permeate outlet pipe 16 are arranged on the secondary STRO membrane group 15; the secondary variable frequency plunger pump 13 and the secondary variable frequency circulating pump 14 are both arranged on the secondary water inlet pipe 12 and are communicated with the secondary STRO membrane group 15 through the secondary water inlet pipe 12; a second-stage concentrated solution return pipe 17 is also arranged between the second-stage variable frequency plunger pump 13 and the second-stage variable frequency circulating pump 14, one end of the second-stage concentrated solution return pipe 17 is communicated with the second-stage water inlet pipe 12, and the other end is communicated with a second-stage concentrated solution outlet pipe 20; the second-stage concentrated solution outlet pipe 20 is also provided with a second-stage pressure regulating valve 19, and the second-stage pressure regulating valve 19 is positioned behind the connection part of the second-stage concentrated solution return pipe 17 and the second-stage concentrated solution outlet pipe 20.
In the embodiment, the water inlet end of a first-stage variable frequency plunger pump 4 is communicated with a raw water pipe 1, a first-stage permeate liquid outlet pipe 7 is communicated with the water inlet end of a second-stage variable frequency plunger pump 13, and a second-stage concentrate outlet pipe 20 is communicated with the water inlet end of the first-stage variable frequency plunger pump 4; the second-stage concentrated solution outlet pipe 20 is also communicated with the water inlet end of the second-stage variable frequency plunger pump 13.
In the embodiment, a security filter 2 for coarse filtration is further installed at the water inlet end of the primary variable frequency plunger pump 4, a scale inhibitor injection pipe 27 is further installed at the water inlet end of the security filter 2, and the scale inhibitor injection pipe 27 is communicated with the raw water pipe 1; the scale inhibitor injection pipe 27 is provided with a scale inhibitor injection valve, wherein pressure sensors are respectively arranged at the water inlet and the water outlet of the security filter 2, the first-stage variable frequency plunger pump 4, the first-stage variable frequency circulating pump 9, the second-stage variable frequency plunger pump 13 and the second-stage variable frequency circulating pump 14; the water outlet ends of the first-stage variable frequency plunger pump 4 and the second-stage variable frequency plunger pump are provided with shock absorbers.
In the embodiment, a cleaning tank 31 is communicated with the water inlet end of the security filter 2 through a primary cleaning water outlet pipe 30, a secondary variable frequency plunger pump 13 is communicated with the primary cleaning water outlet pipe 30 through a secondary cleaning water outlet pipe 25, a cleaning pump 24 is installed on the primary cleaning water outlet pipe 30, and a primary concentrated solution water outlet pipe 11 is communicated with the cleaning tank 31 through a primary concentrated solution return cleaning tank pipe 29; the second-stage permeate outlet pipe 16 is communicated with the cleaning tank 31 through a second-stage concentrated solution return cleaning tank pipe 23.
In the present embodiment, an air-operated valve 26 is further installed in each of the pipes to control opening and closing of each of the pipes, and the position of installation of the air-operated valve 26 is shown in fig. 1.
And (3) filtering the working process: when the system is started, the first-stage reverse osmosis device needs to be started first, and the second-stage reverse osmosis device can be started after the first-stage reverse osmosis device runs at a stable water production rate. The specific working process is as follows:
raw water is fed into the system through a front-end raw water pump, enters a security filter 2 through a raw water pipe 1 and is filtered, and a power frequency plunger pump 3 and a primary variable frequency plunger pump 4 start to work to ensure stable water inlet flow and operation pressure; then the first-stage variable frequency circulating pump 9 starts to work, and the raw water is pumped into the first-stage STRO membrane group 6 for filtration; the primary pressure regulating valve 8 on the primary concentrated solution outlet pipe 11 starts to close, so that the pressure in the system is increased until the water production flow of the primary permeate liquid is increased to a set value. After the water production is stable, the second-stage reverse osmosis device starts to work, the first-stage permeate enters a second-stage water inlet pipe 12 and a second-stage variable frequency plunger pump 13, the second-stage variable frequency circulating pump 14 injects the first-stage permeate into a second-stage STRO membrane group 15, the function of the second-stage variable frequency circulating pump 14 is the same as that of the first-stage variable frequency circulating pump 9, the inlet water is directly sent into the STRO membrane group, and meanwhile, part of concentrated solution of the STRO membrane group is refluxed to a water inlet end for circulating filtration; the secondary pressure regulating valve 19 is gradually closed to enable the secondary reverse osmosis device to stably produce water. In the operation process, the secondary permeate liquid is discharged or recycled through the secondary permeate liquid outer discharge pipe 28, a small part of secondary concentrated liquid enters the secondary STRO membrane group 15 again through the secondary concentrated liquid secondary pipe 21 to make up for the deficiency of water inflow, and most of the secondary concentrated liquid returns to the primary pipe 22 through the secondary concentrated liquid secondary pipe 22 to return to the original water pipe 1 for circulating filtration, so that the treatment efficiency of the whole system is greatly improved.
The chemical cleaning process flow comprises the following steps: the chemical cleaning of the primary and secondary reverse osmosis units is separate. The chemical cleaning is a continuous circulation process, no liquid is required to be discharged, and the permeate and the concentrated solution of the primary STRO membrane group 6 and the secondary STRO membrane group 15 return to the cleaning tank 31 again. The chemical cleaning agent is sent into the pipeline through the cleaning pump 24, passes through the security filter 2, and does not need to be pressurized to operate, so the first-stage variable frequency plunger pump 4 and the second-stage variable frequency plunger pump 13 do not need to be opened, and the first-stage variable frequency circulating pump 9 is started to wash the cleaning agent at a high speed on the inner surface of the first-stage STRO membrane group 6, so that the optimal cleaning effect is achieved. A small amount of first-level permeate liquid that produces among the cleaning process returns through first-level concentrate and washs case pipe 29 and get back to and wash case 31, and most cleaner returns through first-level permeate liquid outlet pipe 7, second grade inlet tube 12, second grade concentrate outlet pipe 20, second grade concentrate and washs case pipe 23 and gets back to and washs case 31. After one-level reverse osmosis unit washs the completion, wash second grade reverse osmosis unit again after shutting down one-level reverse osmosis unit, the cleaner is from wasing case 31 through one-level washing outlet pipe 30, second grade washing outlet pipe 25, second grade inlet tube 12, send into second grade STRO membrane group 15 by second grade frequency conversion circulating pump 14 again in, a small amount of second grade permeate liquid of production passes through second grade permeate liquid outlet pipe 16, second grade permeate liquid returns to wash case pipe 18 and returns to washing case 31, most cleaner passes through second grade concentrate outlet pipe 20, second grade concentrate returns to wash case pipe 23 and gets back to and wash case 31.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (10)
1. A reverse osmosis apparatus characterized by: the device comprises a variable-frequency plunger pump, a variable-frequency circulating pump and a reverse osmosis membrane group which are sequentially connected in series, wherein the reverse osmosis membrane group is provided with a water inlet pipe for introducing liquid to be filtered, a concentrated solution outlet pipe for discharging concentrated solution generated by the reverse osmosis membrane group and a permeate outlet pipe for discharging permeate generated by the reverse osmosis membrane group; the variable-frequency plunger pump and the variable-frequency circulating pump are arranged on the water inlet pipe and are communicated with the reverse osmosis membrane group through the water inlet pipe; still be equipped with the concentrate back flow between frequency conversion plunger pump and the frequency conversion circulating pump, concentrate back flow one end and inlet tube intercommunication, the other end and concentrate outlet pipe intercommunication.
2. A reverse osmosis apparatus according to claim 1, wherein: the reverse osmosis membrane group is a plurality of parallel STRO membrane groups or DTRO membrane groups.
3. A reverse osmosis apparatus according to claim 1, wherein: and a shock absorber is arranged at the water outlet end of the variable-frequency plunger pump.
4. A reverse osmosis apparatus according to claim 1, wherein: the concentrated solution outlet pipe is also provided with a pressure regulating valve which is positioned behind the connection part of the concentrated solution return pipe and the concentrated solution outlet pipe.
5. The utility model provides a landfill leachate two-stage reverse osmosis processing system which characterized in that: the reverse osmosis device comprises two reverse osmosis devices according to any one of claims 1 to 4, namely a first-stage reverse osmosis device and a second-stage reverse osmosis device, wherein the water inlet end of a variable frequency plunger pump of the first-stage reverse osmosis device is communicated with a raw water pipe, the permeate water outlet pipe of the first-stage reverse osmosis device is communicated with the water inlet end of a variable frequency plunger pump of the second-stage reverse osmosis device, and the concentrate water outlet pipe of the second-stage reverse osmosis device is communicated with the water inlet end of the variable frequency plunger pump of the first-stage reverse osmosis device.
6. The two-stage reverse osmosis treatment system for landfill leachate of claim 5, wherein: and a concentrated solution outlet pipe of the second-stage reverse osmosis device is also communicated with a water inlet end of a variable-frequency plunger pump of the second-stage reverse osmosis device.
7. The two-stage reverse osmosis treatment system for landfill leachate of claim 5, wherein: and the water inlet end of the variable frequency plunger pump of the first-stage reverse osmosis device is also provided with a security filter for coarse filtration.
8. The two-stage reverse osmosis treatment system for landfill leachate of claim 7, wherein: the water inlet end of the cartridge filter is also provided with a scale inhibitor injection pipe which is communicated with a raw water pipe; and a scale inhibitor injection valve is arranged on the scale inhibitor injection pipe.
9. The two-stage reverse osmosis treatment system for landfill leachate of claim 7, wherein: and pressure sensors are arranged at the water inlet and the water outlet of the security filter, the variable-frequency plunger pump and the variable-frequency circulating pump.
10. The two-stage reverse osmosis treatment system for landfill leachate of claim 5, wherein: the cleaning device also comprises a cleaning box, wherein a cleaning water outlet pipe and a cleaning water inlet pipe are arranged on the cleaning box; the cleaning water outlet pipe is respectively communicated with the water inlet end of the cartridge filter and the water inlet end of the variable-frequency plunger pump of the secondary reverse osmosis device; and the cleaning water inlet pipe is respectively communicated with a concentrated solution outlet pipe of the first-stage reverse osmosis device and a permeate outlet pipe of the second-stage reverse osmosis device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121145417.9U CN214781211U (en) | 2021-05-26 | 2021-05-26 | Two-stage reverse osmosis treatment system for landfill leachate and reverse osmosis device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121145417.9U CN214781211U (en) | 2021-05-26 | 2021-05-26 | Two-stage reverse osmosis treatment system for landfill leachate and reverse osmosis device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214781211U true CN214781211U (en) | 2021-11-19 |
Family
ID=78697715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121145417.9U Active CN214781211U (en) | 2021-05-26 | 2021-05-26 | Two-stage reverse osmosis treatment system for landfill leachate and reverse osmosis device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214781211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113173661A (en) * | 2021-05-26 | 2021-07-27 | 重庆三峰科技有限公司 | Two-stage reverse osmosis treatment system for landfill leachate and reverse osmosis device thereof |
-
2021
- 2021-05-26 CN CN202121145417.9U patent/CN214781211U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113173661A (en) * | 2021-05-26 | 2021-07-27 | 重庆三峰科技有限公司 | Two-stage reverse osmosis treatment system for landfill leachate and reverse osmosis device thereof |
| CN113173661B (en) * | 2021-05-26 | 2024-08-13 | 重庆三峰科技有限公司 | Landfill leachate two-stage reverse osmosis treatment system and reverse osmosis device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103288177B (en) | Continuous membrane filtration system and water treatment method | |
| CN103301753B (en) | Washing method for preventing reverse osmosis membrane or nano-filtration membrane from being polluted | |
| CN103073164B (en) | Treating system for sewage containing guanidine salt and treating method thereof | |
| CN201962148U (en) | Reverse osmosis water purifier without effluent discharge | |
| CN110980989A (en) | Water-saving treatment system and treatment method for full-membrane-method first-stage reverse osmosis concentrated water | |
| CN205222857U (en) | Reverse osmosis container formula sea water desalination device | |
| CN214781211U (en) | Two-stage reverse osmosis treatment system for landfill leachate and reverse osmosis device thereof | |
| CN201942574U (en) | Water-saving membrane separate-quality water supply water purifier | |
| CN201424407Y (en) | Reverse osmosis and nanofiltration system used in treating high-density organic wastewater | |
| CN205099414U (en) | Reverse osmosis water treatment equipment | |
| CN202400917U (en) | Purifying device for car washing circulating water | |
| CN106495355A (en) | A kind of electroplating wastewater treatment reclaiming technique and combinations thereof device | |
| CN202808500U (en) | Circulating cooling water treatment system | |
| CN201990563U (en) | Integrated equipment used for advanced treatment of coking wastewater | |
| CN106145265A (en) | Hybrid water is to water pressure water tank and high-recovery counter-infiltration system and the method improving the reverse osmosis purified water rate of recovery | |
| CN204779112U (en) | Straight drink machine that no waste water produced | |
| CN209352697U (en) | Sewerage disposing system for circulating cooling water of power plant | |
| CN104803516B (en) | A kind of integrated container formula sea water desalting equipment and desalinating process thereof | |
| CN2910907Y (en) | Water treatment equipment able to recover total concentration water | |
| CN113173661B (en) | Landfill leachate two-stage reverse osmosis treatment system and reverse osmosis device thereof | |
| CN214243985U (en) | Anti-sedimentation mine water purification treatment system | |
| CN205990263U (en) | Hybrid water is to water pressure water tank and high-recovery counter-infiltration system | |
| CN209010278U (en) | A kind of discharge of heavy metal wastewater thereby high standard and recyclable device | |
| CN203333347U (en) | Continuous membrane filtration system | |
| CN202246210U (en) | Device for treating and recycling vehicle washing waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |