CN217756970U - Dish tubular reverse osmosis membrane subassembly integrated system - Google Patents
Dish tubular reverse osmosis membrane subassembly integrated system Download PDFInfo
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- CN217756970U CN217756970U CN202221794033.4U CN202221794033U CN217756970U CN 217756970 U CN217756970 U CN 217756970U CN 202221794033 U CN202221794033 U CN 202221794033U CN 217756970 U CN217756970 U CN 217756970U
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Abstract
The utility model discloses a dish tubular reverse osmosis membrane subassembly integrated system, including high-pressure pump, first order dish tubular membrane group and second level dish tubular membrane group, the high-pressure pump export communicate with first order dish tubular membrane group, the thick liquid entry linkage of thick liquid export and second level dish tubular membrane group of first order dish tubular membrane group, it still includes: the concentrated liquid outlet of the second-stage disc-tube membrane group is communicated with a sewage discharge pipe, and the concentrated liquid outlet regulating valve is arranged at the outlet of the sewage discharge pipe; the concentrated solution discharge valve is also arranged on the blow-off pipe and is connected with the concentrated solution discharge regulating valve in parallel; the inlet of the flushing backflow pipe is communicated with the sewage discharge pipe, and the outlet of the flushing backflow pipe is communicated with the inlet of the high-pressure pump; a concentrated solution reflux valve, the concentrated solution reflux valve establish on washing the back flow, the utility model provides a dish tubular reverse osmosis membrane subassembly integrated system that produces water recovery rate is high.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a dish tubular reverse osmosis membrane subassembly integrated system.
Background
The landfill leachate treatment gradually forms typical treatment processes, such as anaerobic treatment, aerobic treatment, MBR treatment, NF/RO treatment, two-stage disc tube type reverse osmosis DTRO treatment, biochemical treatment, advanced oxidation, filtration treatment, evaporation concentration treatment and the like, and the adopted processes are various due to the fact that the actual water quality conditions of each leachate are different. According to the prior art, the integration of a disc tube type reverse osmosis (DTRO) membrane component is often a parallel combination mode shown in figure 1, firstly, a high-pressure pump provides osmotic pressure, and then a circulating pump is matched to provide the optimal circulating flow for the operation of the membrane component, so that the recovery rate of produced water is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: overcome above prior art's defect, provide a dish tubular reverse osmosis membrane subassembly integrated system that produces water recovery rate height.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a dish tubular reverse osmosis membrane subassembly integrated system, includes high-pressure pump, first order dish tubular membrane group and second level dish tubular membrane group, the high-pressure pump export and first order dish tubular membrane group intercommunication, the thick liquid outlet of first order dish tubular membrane group be connected with the thick liquid entry of second level dish tubular membrane group, it still includes:
the concentrated liquid outlet of the second-stage disc-tube membrane group is communicated with a sewage discharge pipe, and the concentrated liquid outlet regulating valve is arranged at the outlet of the sewage discharge pipe;
the concentrated solution discharge valve is also arranged on the blow-off pipe and is connected with the concentrated solution discharge regulating valve in parallel;
the inlet of the flushing backflow pipe is communicated with the sewage discharge pipe, and the outlet of the flushing backflow pipe is communicated with the inlet of the high-pressure pump;
and the concentrated liquid reflux valve is arranged on the flushing reflux pipe.
After the structure more than adopting, compared with the prior art, the utility model has the following advantage: the direct recovery rate of the system is ensured by adjusting the opening of the concentration discharge adjusting valve; in order to further improve the water recovery rate of the system, the system is provided with a concentrated solution discharge valve and a concentrated solution return valve, and the concentrated solution is controlled to flow by alternately opening and closing the two valves. Specifically, when a concentrated solution discharge valve is opened, concentrated solution enters a rear-end processing facility for processing; opening a concentrated solution reflux valve, and refluxing concentrated solution to a water inlet facility at the front end of the system and then entering the system for treatment; therefore, the indirect recovery rate of the system can be effectively controlled through the alternate opening and closing of the two valves and the opening and closing time control, the range of the indirect recovery rate is usually controlled to be 50-60%, and under the superposition effect of the direct recovery rate and the indirect recovery rate, the comprehensive recovery rate of the system can reach more than 70%, so that the recovery rate of the produced water is high.
Preferably, the second disc tubular membrane module comprises a circulating pump and a second disc tubular reverse osmosis membrane module, an inlet of the circulating pump is communicated with a concentrated solution outlet of the second disc tubular reverse osmosis membrane module, an outlet of the circulating pump is communicated with a concentrated solution inlet of the second disc tubular reverse osmosis membrane module, the pressurizing circulating pump is used for providing the optimal circulating flow rate for the operation of the membrane module in the section, meanwhile, the pressure loss of the membrane module in the previous section is supplemented, and the pressure loss of the section is overcome.
Preferably, the water production outlet of the first-stage disc-tube type membrane module and the water production outlet of the second-stage disc-tube type membrane module are connected to the same water production pipe, so that the water production recovery rate can be counted conveniently.
Preferably, the water production pipe is provided with a water production conductivity meter for detecting the conductivity of the produced water, when the conductivity of the produced water exceeds the limit value of 8ms/cm, membrane elements may be damaged, and automatic alarm is provided for manual intervention inspection.
Preferably, the water production pipe is also provided with a water production flow meter for detecting the flow of the produced water.
Preferably, a temperature sensor is arranged at the outlet of the sewage draining pipe and used for detecting the temperature of the sewage draining pipe, and when the operating temperature is higher than 35 ℃, an alarm is automatically given; when the operation temperature is higher than 40 ℃, the machine is automatically stopped, and the safe operation of the membrane element is ensured not to be damaged.
Preferably, the outlet of the sewage discharge pipe is also provided with a concentration discharge flow meter for detecting the concentration discharge flow.
Preferably, the washing device further comprises a washing water inlet pipe, the outlet of the washing water inlet pipe is communicated with the first-stage disc pipe type membrane group, and a washing water inlet valve is arranged on the washing water inlet pipe, so that the whole system can be washed conveniently.
Preferably, the device also comprises a cleaning return pipe, wherein the inlet of the cleaning return pipe is communicated with a sewage discharge pipe, and a cleaning control valve is arranged on the cleaning return pipe, so that the cleaned water can be conveniently discharged or recycled.
Preferably, it further comprises:
the water inlet pipe is used for the raw water to enter and is communicated with the inlet of the high-pressure pump;
the water inlet pressure switch is used for detecting water inlet pressure and is arranged on the water inlet pipe;
the water inlet valve is also arranged on the water inlet pipe, raw water enters the system through the water inlet pipe, and the water inlet valve is opened after the set limit value of the water inlet pressure switch is reached. Ensure that the system water inflow is normal, avoid equipment to change futilely and damage.
Drawings
FIG. 1 is a flow diagram of a prior art integrated system of a disc tube reverse osmosis membrane module.
Fig. 2 is a flow chart of the disc tube type reverse osmosis membrane component integrated system of the utility model.
The system comprises a high-pressure pump 1, a high-pressure pump 2, a first-stage disc tubular membrane group 210, a membrane component inlet pressure sensor 220, a first-stage disc tubular reverse osmosis membrane component 3, a second-stage disc tubular membrane group 310, a circulating pump 320, a second-stage disc tubular reverse osmosis membrane component 4, a concentration discharge regulating valve 5, a sewage discharge pipe 6, a concentrate discharge valve 7, a flushing return pipe 8, a concentrate return valve 9, a water production pipe 10, a water production conductivity meter 11, a water production flow meter 12, a temperature sensor 13, a concentration discharge flow meter 14, a cleaning return pipe 15, a cleaning control valve 16, a cleaning water inlet pipe 17, a cleaning water inlet valve 18, a water inlet pipe 19, a water inlet pressure switch 20 and a water inlet valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 2, the utility model provides a disc-tube type reverse osmosis membrane component integrated system, which comprises a water inlet pipe 18, a high-pressure pump 1, a first-stage disc-tube type membrane component 2, a second-stage disc-tube type membrane component 3, a blow-off pipe 5 and a water production pipe 9, wherein the water inlet pipe 18, the high-pressure pump 1 and the first-stage disc-tube type membrane component 2 are connected in sequence; a concentrated solution outlet of the first-stage disc-tube type membrane group 2 is connected with a concentrated solution inlet of the second-stage disc-tube type membrane group 3; the water production outlet of the first-stage disc-tube type membrane group 2 and the water production outlet of the second-stage disc-tube type membrane group 3 are both communicated with a water production pipe 9; a concentrated solution outlet of the second-stage disc-tube type membrane group 3 is communicated with a sewage discharge pipe 5; the first stage disc tubular membrane group 2 comprises a membrane component inlet pressure sensor 210 and a first stage disc tubular reverse osmosis membrane component 220, and the second stage disc tubular membrane group 3 comprises a circulating pump 310 (a pressurization circulating pump) and a second stage disc tubular reverse osmosis membrane component 320. Selecting proper high-pressure pump flow according to the system treatment capacity, matching a certain number of membrane modules according to the high-pressure pump flow, and under the proper high-pressure pump flow, the first-stage disc-tube type reverse osmosis membrane module 220 can be not matched with a circulating pump, and the concentrated solution treated by the first-stage disc-tube type reverse osmosis membrane module is pressurized by a pressurizing circulating pump and then enters the second-stage disc-tube type reverse osmosis membrane module 320 for treatment; the matched pressurizing circulating pump provides the optimal circulating flow for the operation of the membrane module in the section, simultaneously supplements the pressure loss of the membrane module in the previous section and overcomes the pressure loss in the section, and the overflowing amount of one membrane module is 0.8-1.2 m 3 The flow rate is preferably set to be lower, the membrane element is easy to block when the flow rate is too low, and the electric load is high when the flow rate is too high.
As an embodiment, in order to detect the produced water and the concentration discharge flow in real time and calculate the water recovery rate of the system, a produced water flowmeter 11 is also arranged on the produced water pipe 9; and a concentration discharge flowmeter 13 is also arranged at the outlet of the sewage discharge pipe 5.
As an embodiment, the outlet of the sewage draining pipe 5 is provided with the concentration discharging regulating valve 4, the opening of the concentration discharging regulating valve 4 can be regulated, the direct recovery rate of the system is ensured, when the concentration discharging regulating valve 4 is in a fully open state, the direct recovery rate is still lower than the set lower limit, the membrane element is indicated to be blocked, and automatic alarm is carried out by manual intervention for cleaning.
As an embodiment, in order to further improve the recovery rate of the produced water of the system, the system is provided with a concentrated solution discharge valve 6, a flushing return pipe 7 and a concentrated solution return valve 8, wherein the concentrated solution discharge valve 6 is arranged on a blow-off pipe 5, and the concentrated solution discharge valve 6 is connected with a concentrated solution discharge regulating valve 4 in parallel; the inlet of the flushing reflux pipe 7 is communicated with the blow-off pipe 5, the outlet of the flushing reflux pipe 7 is communicated with the inlet of the high-pressure pump 1, and the concentrated solution reflux valve 8 is arranged on the flushing reflux pipe 7. The direction of the concentrated solution is controlled by alternately opening and closing the two valves; when the concentrated solution discharge valve 6 is opened, the concentrated solution enters a rear-end processing facility for processing; opening a concentrated solution reflux valve 8, and refluxing the concentrated solution to a water inlet facility at the front end of the system and then entering the system for treatment; thus, the indirect recovery rate of the system can be effectively controlled by the alternate opening and closing of the two valves and the control of the opening and closing time, and the range of the indirect recovery rate is usually controlled to be 50-60%.
As an embodiment, in order to guarantee the quality of produced water, a produced water conductivity meter 10 is arranged on a produced water pipe 9, when the produced water conductivity exceeds a limit value of 8ms/cm, membrane elements can be damaged, and an automatic alarm is provided, so that manual intervention inspection is performed.
As an embodiment, in order to ensure that the membrane element is not damaged during the safe operation, the sewage discharge pipe 5 is provided with a temperature sensor 12, and when the operation temperature is higher than 35 ℃, the automatic alarm is given; when the operation temperature is higher than 40 ℃, the machine is automatically stopped.
As an embodiment, in order to ensure the water inlet of the system is normal and avoid the damage of the dry rotation of the equipment, a water inlet pressure switch 19 and a water inlet valve 20 are respectively arranged on the water inlet pipe 18, and the water inlet valve 20 is opened after the set limit value of the water inlet pressure switch 19 is reached.
In one embodiment, in order to clean the whole system, the system further comprises a cleaning water inlet pipe 16 and a cleaning water inlet valve 17, wherein the outlet of the cleaning water inlet pipe 16 is communicated with the inlet of the first-stage butterfly-pipe type reverse osmosis membrane module 220, and the cleaning water inlet valve 17 is arranged on the cleaning water inlet pipe 16. Specifically, in order to discharge or recycle the cleaning water separately, the cleaning device further comprises a cleaning return pipe 14 and a cleaning control valve 15, wherein the inlet 14 of the cleaning return pipe is communicated with the sewage draining pipe 5, and the cleaning control valve 15 is arranged on the cleaning return pipe 14.
Particularly, the principle of the utility model is that the direct recovery rate of the system is ensured by adjusting the opening degree of the concentration discharge adjusting valve 4; in order to further improve the recovery rate of the produced water of the system, the system is provided with a concentrated solution discharge valve 6 and a concentrated solution return valve 8, and the concentrated solution is controlled to go by the alternate opening and closing of the two valves. Specifically, when the concentrated solution discharge valve 6 is opened, the concentrated solution enters a rear-end processing facility for processing; opening a concentrated solution reflux valve 8, and refluxing the concentrated solution to a water inlet facility at the front end of the system and then entering the system for treatment; therefore, the indirect recovery rate of the system can be effectively controlled through the alternate opening and closing of the two valves and the control of the opening and closing time, the range of the indirect recovery rate is usually controlled to be 50-60%, and under the superposition effect of the direct recovery rate and the indirect recovery rate, the comprehensive recovery rate of the system can reach more than 70%, so that the recovery rate of the produced water is high.
Specifically, this technical scheme can effectively be applied to the advanced treatment of high concentration waste water and the softening of high salt waste water, can obtain higher rate of recovery through using this technical scheme, has lower power consumption load simultaneously. Generally, when the TDS of the inlet water is lower than 25g/L, the recovery rate of the outlet water using the integration can reach more than 70 percent, and meanwhile, the power consumption is lower than 4.0 kW/ton of water.
The action process comprises the following steps: 1. raw water enters the system through a water inlet pipe 18, and when the set limit value of a water inlet pressure switch is reached, a water inlet valve 20 is opened; 2. when the water yield detected by the water production flowmeter 11 reaches a set value, starting the high-pressure pump 1 at a low frequency of 15-20 HZ, then starting the circulating pump 310 at an interval of 1-3 min, and adjusting the running frequency of the high-pressure pump 1 in real time 3-5 min after the circulating pump 310 is started according to the detection data of the membrane component inlet pressure sensor 210 to ensure that the water inlet pressure is stabilized within the range of 2.8-3.2 MPa, thereby completing the startup; the operation within a fixed pressure range can ensure stable water yield, slow flux attenuation and low cleaning frequency; 3. in the operation process, the water production flow meter 11 and the concentration discharge flow meter 13 are used for detecting the water production flow and the concentration discharge flow in real time, the water production recovery rate of the system is calculated, generally, the direct recovery rate of the system is set to be 70-80%, and the direct recovery rate of the system can be ensured by adjusting the opening degree of the concentration discharge adjusting valve 4; 4. the system is provided with a concentrated solution discharge valve 6 and a concentrated solution return valve 8, and the indirect recovery rate of the system can be effectively controlled through the alternate opening and closing of the two valves and the control of the opening and closing time, and the range of the indirect recovery rate is usually controlled to be 50-60%. Under the superposition effect of the direct recovery rate and the indirect recovery rate, the comprehensive recovery rate of the system can reach more than 70 percent.
If a multi-stage circulating pump is provided, when the water yield detected by the water production flowmeter 11 reaches a set value, the high-pressure pump 1 is started at a low frequency of 15-20 HZ, then the circulating pumps are started step by step at intervals of 1-3 min, and the operating frequency of the high-pressure pump 1 is adjusted in real time according to the detection data of the membrane component inlet pressure sensor 210 after the last-stage circulating pump is started for 3-5 min, so that the water inlet pressure is stabilized within the range of 2.8-3.2 MPa, and the startup is completed.
On the basis of the above solution, if various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, provided they fall within the scope of the claims and equivalent technology of the present invention, then the present invention is also intended to include these changes and modifications.
Claims (10)
1. The utility model provides a dish tubular reverse osmosis membrane subassembly integrated system, includes high-pressure pump (1), first order dish tubular membrane group (2) and second level dish tubular membrane group (3), high-pressure pump (1) export and first order dish tubular membrane group (2) intercommunication, its characterized in that: the concentrated solution outlet of first order dish tubular membrane group (2) be connected with the concentrated solution inlet of second level dish tubular membrane group (3), it still includes:
the concentrated solution outlet of the second-stage disc-tube membrane group (3) is communicated with a sewage discharge pipe (5), and the concentrated solution discharge regulating valve (4) is arranged at the outlet of the sewage discharge pipe (5);
the concentrated solution discharge valve (6) is also arranged on the blow-off pipe (5), and the concentrated solution discharge valve (6) is connected with the concentrated solution discharge regulating valve (4) in parallel;
the inlet of the flushing return pipe (7) is communicated with the sewage discharge pipe (5), and the outlet of the flushing return pipe (7) is communicated with the inlet of the high-pressure pump (1);
the concentrated liquid reflux valve (8), the concentrated liquid reflux valve (8) is arranged on the flushing reflux pipe (7).
2. The integrated system of a disc tube reverse osmosis membrane module of claim 1, wherein: the second-stage disc-tube type membrane group (3) comprises a circulating pump (310) and a second-stage disc-tube type reverse osmosis membrane component (320), an inlet of the circulating pump (310) is communicated with a concentrated solution outlet of the second-stage disc-tube type reverse osmosis membrane component (320), and an outlet of the circulating pump (310) is communicated with a concentrated solution inlet of the second-stage disc-tube type reverse osmosis membrane component (320).
3. The integrated system of a disc tube reverse osmosis membrane module of claim 1, wherein: the water production outlet of the first-stage disc-tube type membrane group (2) and the water production outlet of the second-stage disc-tube type membrane group (3) are connected to the same water production pipe (9).
4. The integrated disc tube reverse osmosis membrane module system according to claim 3, wherein: the water production pipe (9) is provided with a water production conductivity meter (10).
5. The integrated system of a disc tube reverse osmosis membrane module of claim 3, wherein: the water production pipe (9) is also provided with a water production flow meter (11).
6. The integrated system of a disc tube reverse osmosis membrane module of claim 1, wherein: and a temperature sensor (12) is arranged at the outlet of the sewage discharge pipe (5).
7. The integrated disc tube reverse osmosis membrane module system of claim 1, wherein: and an outlet of the sewage discharge pipe (5) is also provided with a concentration discharge flowmeter (13).
8. The integrated disc tube reverse osmosis membrane module system of claim 1, wherein: it still includes washing inlet tube (16), washing inlet tube (16) export and first order dish tubular membrane group (2) intercommunication, washing inlet tube (16) on be equipped with washing water intaking valve (17).
9. The integrated disc tube reverse osmosis membrane module system of claim 8, wherein: the device also comprises a cleaning return pipe (14), wherein the inlet of the cleaning return pipe (14) is communicated with the sewage discharge pipe (5), and a cleaning control valve (15) is arranged on the cleaning return pipe (14).
10. The integrated disc tube reverse osmosis membrane module system of claim 1, wherein: it still includes:
the water inlet pipe (18) is used for the raw water to enter, and the water inlet pipe (18) is communicated with the inlet of the high-pressure pump (1);
the water inlet pressure switch (19) is used for detecting water inlet pressure and is arranged on the water inlet pipe (18);
and the water inlet valve (20) is also arranged on the water inlet pipe (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221794033.4U CN217756970U (en) | 2022-07-12 | 2022-07-12 | Dish tubular reverse osmosis membrane subassembly integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221794033.4U CN217756970U (en) | 2022-07-12 | 2022-07-12 | Dish tubular reverse osmosis membrane subassembly integrated system |
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| Publication Number | Publication Date |
|---|---|
| CN217756970U true CN217756970U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221794033.4U Active CN217756970U (en) | 2022-07-12 | 2022-07-12 | Dish tubular reverse osmosis membrane subassembly integrated system |
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| Country | Link |
|---|---|
| CN (1) | CN217756970U (en) |
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- 2022-07-12 CN CN202221794033.4U patent/CN217756970U/en active Active
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