CN204281377U - There is the water treatment system of positive permeator - Google Patents
There is the water treatment system of positive permeator Download PDFInfo
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- CN204281377U CN204281377U CN201420709276.2U CN201420709276U CN204281377U CN 204281377 U CN204281377 U CN 204281377U CN 201420709276 U CN201420709276 U CN 201420709276U CN 204281377 U CN204281377 U CN 204281377U
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Abstract
The utility model provides a kind of water treatment system with positive permeator, comprising: the first positive permeator (8), and its first brine inlet (81) fluid is communicated in salt ground water source (2); Second positive permeator (5), its brine inlet (51) fluid is communicated in first brine outlet (82) of the described first positive permeator (8); Reverse osmosis unit (6), its brine inlet (61) fluid is communicated in second brine outlet (84) of the described first positive permeator (8) and the brine outlet (52) of the described second positive permeator, and its brine outlet (62) fluid is communicated in second brine inlet (83) of the described first positive permeator (8).Save energy consumption, improve the processing efficiency of municipal wastewater and salt ground water, and simplify system architecture.
Description
Technical field
The utility model relates to a kind of water treatment system with positive permeator, particularly a kind of water treatment system municipal wastewater and salt ground water simultaneously processed.
Background technology
Under the inland environment of arid, just from more and more deeply and more and more salty waterbearing stratum groundwater abstraction, to supply drinking water.Water from the deep-well in arid region utilizes reverse osmosis (RO) film processing system and equipment to process usually, is more suitable for drinking to make it.Except trace is harmful to salt, RO is effective at the used water height of recovery more than 90% when discarded (reject).Although process mainly in removal trace toxic salt, a large amount of conventional salts (such as, sodium-chlor) and alkali (such as, calcium carbonate) are also discarded by RO film when process.
But the positive infiltration technology used in municipal wastewater and salt ground water treating processes needs to use a large amount of driving liquid containing high density salinity, just permeates to drive.In existing water technology, municipal wastewater and salt ground water process respectively, so can bring that processing cost is high, energy consumption is high, treatment facility complex structure, the low inferior drawback of water treatment efficiency.
Utility model content
For the Related Technical Issues of prior art, the purpose of this utility model is to provide a kind of water treatment system with positive permeator, processes municipal wastewater and salt ground water simultaneously, with the cost reduced in water treatment procedure with improve water treatment efficiency.
For achieving the above object, the utility model provides a kind of water treatment system with positive permeator, comprising: the first positive permeator, and its first brine inlet fluid is communicated in salt ground water source; Second positive permeator, its brine inlet fluid is communicated in the first brine outlet of the first positive permeator; Reverse osmosis unit, its brine inlet fluid is communicated in the second brine outlet of the first positive permeator and the brine outlet of the second positive permeator, and its brine outlet fluid is communicated in the second brine inlet of the first positive permeator.
According to the utility model, wherein, the waste water fluid communication of the second positive permeator is in the waste water source being suitable for just permeating through process.
According to the utility model, the side that the fluid of the first positive permeator is communicated in reverse osmosis unit is provided with and drives liquid entrance.
According to the utility model, water treatment system also comprises: salt solution interflow tank, and the brine inlet being configured to reverse osmosis unit is communicated in the second brine outlet of the first positive permeator and the brine outlet of the second positive permeator by salt solution interflow tank fluid.
According to the utility model, through processing, the waste water source being suitable for just permeating is through digester precipitation, gravitational separation device is separated, the municipal wastewater of ultra-filtration equipment filtration again.
Compared to prior art, advantage of the present utility model is:
1. municipal wastewater and salt ground water process by the utility model in a system simultaneously, and be used in the driving liquid of the brackish water in the first positive permeator after positive osmosis concentration as the second positive permeator to extract the pure water in municipal wastewater, therefore, the extra a large amount of driving liquid added in the second positive permeator are saved.
2. the utility model is carried out extraction pure water by the salt solution interflow as driving liquid of diluting to reverse osmosis unit is concentrated using in the first and second positive permeator, driving liquid reconcentration is circulated, therefore, with extract compared with pure water respectively, improve the processing efficiency of municipal wastewater and salt ground water, and simplify system architecture.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the system according to preferred embodiment of the present utility model.
Embodiment
See accompanying drawing, embodiment of the present utility model is described below.
See the example shown in Fig. 1, water treatment system of the present utility model, comprising: the positive permeator 5 of the first positive permeator 8, second, reverse osmosis unit 6, and the first brine inlet 81 fluid of this first positive permeator 8 is communicated in salt ground water source 2; Brine inlet 51 fluid of the second positive permeator is communicated in the first brine outlet 82 of the first positive permeator 8, brine inlet 61 fluid of reverse osmosis unit 6 is communicated in the second brine outlet 84 of the first positive permeator 8 and the brine outlet 52 of the second positive permeator 5, and brine outlet 62 fluid of reverse osmosis unit 6 is communicated in the second brine inlet 83 of the first positive permeator 8.The motivating force of just permeating the pellicular water process of (FO) is the osmotic pressure in Waste brine, distinguishes with the thin-film technique driven by itself and other pressure (pump).FO uses the passive power of drawing of salt to make water enter product water side from waste water side by film.FO also extremely low stain, because have low hydrostaticpressure and relative high surface shear at film place, does not exist the condition forcing particulate to enter membrane pores in FO in RO or pump pressure drive system.Therefore, particulate can not be drawn and be embedded in FO membrane pores.Therefore, compared with other thin-film techniques of similar RO, FO technique has extremely low possibility of pollution.Municipal wastewater and salt ground water process by the utility model in a system simultaneously, and be used in the driving liquid of the brackish water in the first positive permeator after positive osmosis concentration as the second positive permeator to extract the pure water in municipal wastewater, therefore, the extra a large amount of driving liquid added in the second positive permeator are saved.
According to embodiment of the present utility model, the waste water fluid communication of the second positive permeator 5 is in the waste water source being suitable for just permeating through process.This process processes the municipal wastewater that the waste water source being suitable for just permeating is through digester precipitation, gravitational separation device separation, again ultra-filtration equipment are filtered.Specifically, Fig. 1 shows embodiment of the present utility model, it illustrates system 10 and comprises parts for producing B-grade sewage from waste water disposal facility.Waste water enters system 10 via pipeline 17, and enters secondary waste water digester/ventilation plant 18.In element 18 after process, waste water enters gravity separation unit, and selectively can carry out ultrafiltration in ultra filtration unit 21 more subsequently.Alternatively, pump 20 can be used to assist wastewater streams is transported to unit 21.The mud produced by the gravity separation in element 19 and 21 and ultrafiltration is respectively transported to mud except drainage facility, not shown in Figure 1.The B-grade sewage produced by gravity separation and ultrafiltration is transported to the reverse tank 22 of brine loop.The waste water of clarification leaves the bottom of tank 22 and is transported to the second positive permeator 5, alternatively via pump 29.Valve 27,30,31 and 32 is used to control the flowing of liquid by each pipeline.At FO treatment loop tank, B-grade sewage at a side loop of tank, as is illustrated in the left side of fig. 1.The circulation of B-grade sewage can continue, until obtain the recovery per-cent through FO film 6 expected.FO waste is the wastewater sludge of relative enhancement, comprises the solid of nearly about 2%, and is substantially similar to the elementary of the sludge digestion tank being delivered to wastewater treatment plant place and two-stage precipitation solid.With a kind of similar fashion, FO film can be arranged in the aerobic tank of processing plant, to provide osmosis membrane bioreactor system.
Continue with reference to figure 1, the side that the fluid of the first positive permeator 8 is communicated in reverse osmosis unit 6 is provided with driving liquid entrance 36.The pipeline that this driving liquid entrance 36 is communicated with the first positive permeator 8 is also serially connected with valve 35.This driving liquid entrance 36 drives liquid for starting the first positive permeator 8 and then enlightenment whole system or supplementing when system operation drives liquid not enough, and discharges the impurity and unnecessary salt solution that accumulate in systemic circulation if desired.Due to system just enlighten time, liquid side is driven to drive liquid not used for the high density drawing moisture from salt ground water at the first positive permeator 8, the just infiltration of the first positive permeator 8 so can be caused to start, therefore, inject a certain amount of driving liquid to drive the just infiltration of the first positive permeator 8 when enlightening, this driving liquid can be solid salt or high density salt solution etc.In addition, be injected into the salt solution of system from salt ground water source 2 likely at the driving liquid side depositing contaminants etc. of the first positive permeator 8, drive liquid entrance 36 and valve 35 to contribute to discharging these impurity.
Enter a bit according to embodiment of the present utility model, water treatment system 10 also comprises: salt solution interflow tank 12, and the brine inlet that this salt solution interflow tank is configured to described reverse osmosis unit is communicated in the second brine outlet 84 of the first positive permeator 8 and the brine outlet 52 of the second positive permeator 5 by described salt solution interflow tank 12 fluid.The utility model is carried out extraction pure water by the salt solution interflow as driving liquid of diluting to reverse osmosis unit is concentrated using in the first and second positive permeator, driving liquid reconcentration is circulated, therefore, with extract compared with pure water respectively, improve the processing efficiency of municipal wastewater and salt ground water, and simplify system architecture.
The workflow of water treatment system of the present utility model is: the driving liquid of salt ground water flows into the first positive permeator 8 brine side and driving liquid side from salt ground water source 2 occurs just permeating and is concentrated, the process of brine side and waste water side that the salt solution after being concentrated flow into the second positive permeator 8 processes the waste water being suitable for just permeating and occurs just to permeate, thus the moisture in waste water is absorbed in concentrated salt solution through forward osmosis membrane, the salt solution concentrated is diluted again, and the salt solution then diluted flows into reverse osmosis unit 6 face through salt solution interflow tank 12 and is extracted pure water.First positive permeator 8 also flows into reverse osmosis unit 6 face through salt solution interflow tank 12 after driving the water suction of the driving liquid of liquid side to be diluted and is extracted pure water simultaneously, be extracted pure water and salt solution after being concentrated and drive the driving liquid side flowing into the first positive permeator 8 together with liquid from reverse osmosis unit, absorbing water using the driving liquid circulated as next.
These are only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. there is a water treatment system for positive permeator, it is characterized in that, comprising:
First positive permeator (8), its first brine inlet (81) fluid is communicated in salt ground water source (2);
Second positive permeator (5), its brine inlet (51) fluid is communicated in first brine outlet (82) of the described first positive permeator (8);
Reverse osmosis unit (6), its brine inlet (61) fluid is communicated in second brine outlet (84) of the described first positive permeator (8) and the brine outlet (52) of the described second positive permeator, and its brine outlet (62) fluid is communicated in second brine inlet (83) of the described first positive permeator (8).
2. the water treatment system with positive permeator according to claim 1, is characterized in that, the waste water fluid communication of the described second positive permeator is in the waste water source being suitable for just permeating through process.
3. water treatment system according to claim 1, is characterized in that, the side that the fluid of the described first positive permeator (8) is communicated in described reverse osmosis unit (16) is provided with and drives liquid entrance (36).
4. the water treatment system with positive permeator according to claim 1, is characterized in that, also comprise:
Salt solution interflow tank (12), the brine inlet being configured to described reverse osmosis unit (16) is communicated in the second brine outlet of the described first positive permeator (8) and the brine outlet of the described second positive permeator by described salt solution interflow tank (12) fluid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420709276.2U CN204281377U (en) | 2014-11-21 | 2014-11-21 | There is the water treatment system of positive permeator |
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| CN201420709276.2U CN204281377U (en) | 2014-11-21 | 2014-11-21 | There is the water treatment system of positive permeator |
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| CN204281377U true CN204281377U (en) | 2015-04-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668830A (en) * | 2016-01-18 | 2016-06-15 | 青岛理工大学 | Method and system for synergic production of fresh water from sewage plant secondary effluent and strong brine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668830A (en) * | 2016-01-18 | 2016-06-15 | 青岛理工大学 | Method and system for synergic production of fresh water from sewage plant secondary effluent and strong brine |
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