CN210944952U - Multifunctional membrane method water treatment device - Google Patents
Multifunctional membrane method water treatment device Download PDFInfo
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- CN210944952U CN210944952U CN201921825267.9U CN201921825267U CN210944952U CN 210944952 U CN210944952 U CN 210944952U CN 201921825267 U CN201921825267 U CN 201921825267U CN 210944952 U CN210944952 U CN 210944952U
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Abstract
The utility model relates to a multifunctional membrane method water treatment device, which comprises a first water tank, a second water tank, a forward osmosis unit, a membrane distillation unit and a valve unit component; the first water tank is connected with the forward osmosis unit through a first forward osmosis unit water inlet connecting pipe; the first water tank is connected with the membrane distillation unit through a first membrane distillation unit water inlet connecting pipe; the forward osmosis unit is connected with the first water tank through a first forward osmosis unit water outlet connecting pipe; the membrane distillation unit is connected with the first water tank through a first membrane distillation unit water outlet connecting pipe; the second water tank is connected with the forward osmosis unit through a second forward osmosis unit water inlet connecting pipe; the second water tank is connected with the membrane distillation unit through a second membrane distillation unit water inlet connecting pipe. The water quality control system has the advantages of reasonable structural design, convenience in operation and use, capability of realizing independent operation of the two modules by adding the valve pipelines, meeting equipment requirements in scientific research and production when different water qualities are processed, reducing cost, saving resources and the like.
Description
Technical Field
The utility model relates to a embrane method water treatment technical field especially relates to a multi-functional embrane method water treatment facilities.
Background
Forward Osmosis (FO) is a new membrane separation technology, and compared with common membrane separation technologies such as ultrafiltration, microfiltration and reverse Osmosis, it does not need external pressure as separation driving force (or can operate under lower external pressure), but rather, it uses the osmotic pressure difference of the solution itself to drive the Forward Osmosis separation process. Compared with pressure-driven membrane separation processes, such as microfiltration, ultrafiltration, nanofiltration, reverse osmosis and other technologies, the FO technology has many unique advantages, such as low-pressure or even non-pressure operation, thus having lower energy consumption, and simultaneously being simple and convenient to operate and having lower requirements on equipment; the hydrophilic membrane has the property of ensuring that the hydrophilic membrane has low membrane pollution; almost completely entraps a plurality of pollutants, and has good separation effect. The forward osmosis technology shows wide application prospect in the aspects of high difficulty and deep water treatment such as seawater desalination, industrial wastewater treatment, landfill leachate, municipal sewage deep treatment and the like.
Membrane Distillation (MD) is a liquid separation technology combining traditional Distillation technology and Membrane separation technology, and its process is that water molecules of hot-side liquid are evaporated and vaporized, and pass through the micropores of hydrophobic Membrane, and the non-volatile solutes of ions and molecules in water phase are retained on one side of Membrane so as to implement solution separation, concentration or purification. The mass transfer power of the membrane distillation process is the water vapor pressure difference caused by the temperature difference of two sides of the membrane. The method has the advantages of low operation temperature, small occupied area, low investment and the like, and simultaneously has the advantages of low operation pressure, theoretical retention rate of 100 percent and the like compared with the membrane separation technology, so that the method is more and more emphasized.
MD is often used in conjunction with FO as a recovery process for forward osmosis draw solutions. The MD concentrates the diluted draw solution and returns the diluted draw solution to the FO unit for recycling, the stable water flux of the system can be maintained through the integration of the FO-MD, the phenomenon of driving force reduction caused by the reduction of the concentration of the FO draw solution in the separation process is avoided, and the method is an efficient process integration mode. But the conventional FO-MD process does not allow for the independent use of two membrane separation modules. The utility model discloses just provide based on under this background, aim at providing a multi-functional embrane method water treatment facilities to overcome above-mentioned defect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the multifunctional membrane water treatment device has the advantages of reasonable structural design, convenience in operation and use, capability of realizing independent operation of two modules by adding a valve pipeline, meeting equipment requirements for treating different water qualities in scientific research and production, reducing cost, saving resources and the like.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a water treatment device adopting a multifunctional membrane method comprises a first water tank, a second water tank, a forward osmosis unit, a membrane distillation unit and a valve unit assembly; the first water tank is connected with the forward osmosis unit through a first forward osmosis unit water inlet connecting pipe; the first water tank is connected with the membrane distillation unit through a first membrane distillation unit water inlet connecting pipe; the forward osmosis unit is connected with the first water tank through a first forward osmosis unit water outlet connecting pipe; the membrane distillation unit is connected with a first water tank through a first membrane distillation unit water outlet connecting pipe; the second water tank is connected with the forward osmosis unit through a second forward osmosis unit water inlet connecting pipe; the second water tank is connected with the membrane distillation unit through a second membrane distillation unit water inlet connecting pipe; the forward osmosis unit is connected with a second water tank through a second forward osmosis unit water outlet connecting pipe; the membrane distillation unit is connected with a second water tank through a second membrane distillation unit water outlet connecting pipe; the valve unit component comprises a first valve arranged on the first forward osmosis unit water inlet connecting pipe, a second valve arranged on the first membrane distillation unit water inlet connecting pipe, a third valve arranged on the second membrane distillation unit water inlet connecting pipe, a fourth valve arranged on the second forward osmosis unit water outlet connecting pipe, a fifth valve arranged on the second membrane distillation unit water outlet connecting pipe and a sixth valve arranged on the first membrane distillation unit water outlet connecting pipe.
As a further optimization of the scheme, an electric heater and a temperature controller are arranged in the first water tank and the second water tank; the temperature controller is connected with the electric heater in a control way; the temperature control range of the temperature controller is 60-90 ℃.
Adopt the utility model discloses a multi-functional embrane method water treatment facilities has following beneficial effect: the device has simple structure, reasonable design and flexible and convenient operation and use, can realize the function of the 3-membrane separation treatment device through one device, and is economic and effective, saves resources and reduces the cost.
Drawings
FIG. 1 is a schematic structural view of the multifunctional membrane water treatment device of the present invention.
Detailed Description
The multi-functional membrane water treatment apparatus of the present invention will be described in detail with reference to fig. 1.
A water treatment device with a multifunctional membrane method comprises a first water tank, a second water tank, a forward osmosis unit 3, a membrane distillation unit 4 and a valve unit assembly; wherein the first water tank is connected with the forward osmosis unit through a first forward osmosis unit water inlet connecting pipe 5; the first water tank is connected with the membrane distillation unit through a first membrane distillation unit water inlet connecting pipe 6; the forward osmosis unit is connected with a first water tank through a first forward osmosis unit water outlet connecting pipe 7; the membrane distillation unit is connected with a first water tank through a first membrane distillation unit water outlet connecting pipe 8; the second water tank is connected with the forward osmosis unit through a second forward osmosis unit water inlet connecting pipe 9; the second water tank is connected with the membrane distillation unit through a second membrane distillation unit water inlet connecting pipe 10; the forward osmosis unit is connected with a second water tank through a second forward osmosis unit water outlet connecting pipe 11; the membrane distillation unit is connected with a second water tank through a second membrane distillation unit water outlet connecting pipe 12; the valve unit component comprises a first valve 13 arranged on the first forward osmosis unit water inlet connecting pipe, a second valve 14 arranged on the first membrane distillation unit water inlet connecting pipe, a third valve 15 arranged on the second membrane distillation unit water inlet connecting pipe, a fourth valve 16 arranged on the second forward osmosis unit water outlet connecting pipe, a fifth valve 17 arranged on the second membrane distillation unit water outlet connecting pipe and a sixth valve 18 arranged on the first membrane distillation unit water outlet connecting pipe.
The first water tank and the second water tank are both provided with an electric heater and a temperature controller; the temperature controller is connected with the electric heater in a control way; the temperature control range of the temperature controller is 60-90 ℃.
The utility model discloses foretell theory of operation as follows:
(1) based on the forward osmosis single treatment method, the steps are as follows with reference to fig. 1:
opening the first valve and the fourth valve, and closing the second valve, the third valve, the fifth valve and the sixth valve.
(2) The individual treatment method based on membrane distillation, with reference to fig. 1, comprises the following steps:
opening valves two and six, and closing valves one, three, four and five.
(3) Based on a forward osmosis-membrane distillation coupling treatment method, the method comprises the following steps with reference to figure 1:
opening valves I, III, IV and V, and closing valves II and VI.
The specific application examples are as follows:
example 1: the independent operation of the FO unit is suitable for situations where the draw solution does not need to be recovered.
Take the raw material solution as reverse osmosis concentrated water and the draw solution as saturated fertilizer solution as an example. And (2) injecting reverse osmosis concentrated water into the water tank, injecting saturated fertilizer solution into the water tank, opening a first valve to realize circulation of the FO raw material liquid side under the drive of the pump, and opening a fourth valve to realize circulation of the FO drawing liquid side under the drive of the pump. The other valves are closed. Under the action of osmotic pressure, the concentrated reverse osmosis water is concentrated and the fertilizer is diluted. When the osmotic pressure of two sides tends to be close, can stop the operation, the liquid of drawing after being diluted need not concentrated recovery, can directly irrigate the farmland.
Example 2: the MD unit operates independently and is suitable for high-power concentration of feed liquid without low-surface-energy substances (such as surfactant) in a water source.
Taking seawater as raw material liquid as an example. Injecting the seawater into the first water tank, heating to 60-85 deg.C, opening valves II and VI, and closing other valves. The circulation of MD raw material liquid is realized under the driving of a pump, under the action of vapor pressure, water vapor penetrates through a membrane to reach a condensation side of MD to produce water, and the seawater liquid is continuously concentrated. The MD condensation side can be in the form of direct contact type membrane distillation, air swept type membrane distillation, vacuum type membrane distillation and air swept type membrane distillation, the condensation temperature is controlled to be between 5 ℃ and 25 ℃, and pure water can be obtained after the permeated water vapor is condensed.
Example 3: the FO-MD coupling is used together, and is suitable for the situation that the drawing solution needs to be concentrated and recycled in the forward osmosis process.
The raw material liquid is a digested liquid obtained by anaerobic digestion of sludge, and the draw liquid is a 1.5M/L sodium chloride solution, and is also taken as an MD feed liquid as an example. And (4) placing the digestive juice in a raw material box, opening a first valve to realize FO raw material liquid circulation, and keeping a second valve and a sixth valve closed. Opening valve four, the FO draws the liquid side and begins the circulation, and at this moment, single FO unit operation, the digestion liquid is constantly concentrated, draws the liquid and constantly is diluted. And adjusting the heating temperature of the second water tank to 60-85 ℃, continuously opening the third valve and the fifth valve, starting the cyclic operation of membrane distillation, enabling the drawing liquid of the FO unit to become the feed liquid of the MD unit, and starting the coupling treatment process. The FO process dilutes the drawing liquid, the MD concentrates the drawing liquid, and the dynamic balance of the concentration of the feed liquid in the second water tank is realized through the adjustment of the operating conditions. The end result is a concentration of the digestive juice and a pure water yield.
The embodiments described above are intended to facilitate one of ordinary skill in the art to understand and practice the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments herein, and those skilled in the art should understand that modifications and alterations made without departing from the scope of the present invention are within the protection scope of the present invention.
Claims (2)
1. A water treatment device with a multifunctional membrane method is characterized in that: the device comprises a first water tank (1), a second water tank (2), a forward osmosis unit (3), a membrane distillation unit (4) and a valve unit assembly; the first water tank is connected with the forward osmosis unit through a first forward osmosis unit water inlet connecting pipe (5); the first water tank is connected with the membrane distillation unit through a first membrane distillation unit water inlet connecting pipe (6); the forward osmosis unit is connected with the first water tank through a first forward osmosis unit water outlet connecting pipe (7); the membrane distillation unit is connected with a first water tank through a first membrane distillation unit water outlet connecting pipe (8); the second water tank is connected with the forward osmosis unit through a second forward osmosis unit water inlet connecting pipe (9); the second water tank is connected with the membrane distillation unit through a second membrane distillation unit water inlet connecting pipe (10); the forward osmosis unit is connected with a second water tank through a second forward osmosis unit water outlet connecting pipe (11); the membrane distillation unit is connected with a second water tank through a second membrane distillation unit water outlet connecting pipe (12); the valve unit component comprises a first valve (13) arranged on the first forward osmosis unit water inlet connecting pipe, a second valve (14) arranged on the first membrane distillation unit water inlet connecting pipe, a third valve (15) arranged on the second membrane distillation unit water inlet connecting pipe, a fourth valve (16) arranged on the second forward osmosis unit water outlet connecting pipe, a fifth valve (17) arranged on the second membrane distillation unit water outlet connecting pipe and a sixth valve (18) arranged on the first membrane distillation unit water outlet connecting pipe.
2. The multi-membrane process water treatment device according to claim 1, characterized in that: the first water tank and the second water tank are both provided with an electric heater and a temperature controller; the temperature controller is connected with the electric heater in a control way; the temperature control range of the temperature controller is 60-90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825267.9U CN210944952U (en) | 2019-10-28 | 2019-10-28 | Multifunctional membrane method water treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825267.9U CN210944952U (en) | 2019-10-28 | 2019-10-28 | Multifunctional membrane method water treatment device |
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| CN210944952U true CN210944952U (en) | 2020-07-07 |
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| CN201921825267.9U Active CN210944952U (en) | 2019-10-28 | 2019-10-28 | Multifunctional membrane method water treatment device |
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- 2019-10-28 CN CN201921825267.9U patent/CN210944952U/en active Active
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