CN212024984U - Loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and recycling resources - Google Patents
Loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and recycling resources Download PDFInfo
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- CN212024984U CN212024984U CN202020704402.0U CN202020704402U CN212024984U CN 212024984 U CN212024984 U CN 212024984U CN 202020704402 U CN202020704402 U CN 202020704402U CN 212024984 U CN212024984 U CN 212024984U
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Abstract
The utility model provides a loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and recycling resources, which comprises a centrifugal device, a nanofiltration device and an adsorption device, wherein the centrifugal device comprises a fixed box, a rotary box and a motor, the rotary box is arranged in the fixed box and is connected with an output shaft of the motor, and the side wall of the rotary box is provided with a water permeable hole; a water outlet pipe I is arranged outside the fixed box and connected with the nanofiltration box, and a primary nanofiltration membrane and a secondary nanofiltration membrane are arranged in the nanofiltration box; and a water outlet pipe II of the nanofiltration tank is connected with an adsorption device, and the adsorption device is sequentially provided with an electrostatic adsorption plate, a resin adsorption layer and a through hole from top to bottom. The utility model discloses at first utilize the impurity centrifugation of rotatory case in with the waste water to detach, then utilize to receive the filter membrane and separate dyestuff and inorganic salt, set for simultaneously and beat the device, beat the filter membrane, knock off the deposit dyestuff, utilize adsorption equipment to adsorb the processing to waste water, water purification guarantees the safety of quality of water.
Description
Technical Field
The utility model relates to a waste water treatment field, concretely relates to loose filter membrane adsorption equipment that receives for handling printing and dyeing wastewater and resource recovery.
Background
Currently, the printing and dyeing industry is considered to be one of the most serious pollution industries, and waste water discharged in the process has adverse effects on ecological systems and public health. Both in the dye synthesis and dyeing process, a large amount of dye waste water is generated. In general, dye wastewater contains a large amount of inorganic salts (mainly NaCl). These inorganic salts are mainly derived from acid-base neutralization reactions during dye synthesis or are used as additives to increase the dye absorption rate during dyeing. With the deep understanding of the concept of sustainable environmental development, the dye waste water can be regarded as a potential resource for utilization. Wherein, the high-concentration dye in the dye wastewater can be further extracted and reused for dyeing textiles, thereby reducing the dyeing cost; and the high-concentration NaCl can be used as a salt source in the membrane separation processes of forward osmosis, reverse electrodialysis or bipolar membrane electrodialysis and the like. However, the conventional methods such as biodegradation, adsorption, flocculation/coagulation, advanced oxidation and the like mainly remove the dye by means of form conversion or dye structure destruction, and cannot realize resource treatment of dye wastewater.
Loose nanofiltration membranes (molecular weight cut-off of 500-1000 Da) have attracted increasing attention in the separation of dyes and inorganic salts. Because the surface structure of the nanofiltration membranes is loose and the aperture is large, NaCl can effectively permeate through the nanofiltration membranes, but the dyes can be efficiently trapped. Therefore, the loose nano-wave and the membrane have greater application value in the field of separation of dye and NaCl. Lin et al (Journal of Membrane Science, 2015, 477, 183-193) reported that commercial loose nanofiltration membranes with cut-off molecular weight of 860 Da can effectively cut off direct red dye with cut-off rate as high as 99.6% or more and NaCl penetration rate of 96.7%. However, in the application process of the loose nanofiltration membrane, a large amount of dye is deposited on the surface of the membrane and forms a filter cake, so that the effect of promoting concentration polarization by the filter cake is remarkable, the membrane resistance is improved, the membrane flux is greatly reduced, and the energy consumption of the membrane stack during operation is sharply increased. Meanwhile, the nanofiltration process needs to be combined with a percolation process to desalt the dye, a large amount of water is consumed, and the nanofiltration permeate with low salt content is difficult to be recycled.
SUMMERY OF THE UTILITY MODEL
The utility model provides a loose filter membrane adsorption equipment that receives for handling printing and dyeing wastewater and resource recovery not only can solve the sedimentary problem of dyestuff that receives the membrane use and appear, can also adsorb the processing to waste water, water-purifying.
Realize the technical scheme of the utility model is that:
the loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and resource recovery comprises a centrifugal device, a nanofiltration device and an adsorption device, wherein the centrifugal device comprises a fixed box, a rotary box and a motor, the rotary box is arranged in the fixed box and is connected with an output shaft of the motor, and a water permeable hole is formed in the side wall of the rotary box; a water outlet pipe I is arranged outside the fixed box and connected with the nanofiltration box, and a primary nanofiltration membrane and a secondary nanofiltration membrane are arranged in the nanofiltration box; and a water outlet pipe II of the nanofiltration tank is connected with an adsorption device, and the adsorption device is sequentially provided with an electrostatic adsorption plate, a resin adsorption layer and a through hole from top to bottom.
The beating device is arranged between the first-stage nanofiltration membrane and the second-stage nanofiltration membrane and comprises an electric push rod fixed on the nanofiltration box, the end part of the electric push rod is hinged with a beating rod, and the lower end of the beating rod is provided with a beating ball.
The one-level is received the filter membrane centre gripping and is equipped with the baffle on the internal wall of nanofiltration tank between two elastic net, is equipped with the spring on the baffle, and the tip and the elastic net of spring link to each other, and the upper end and the lower extreme of one-level receive the filter membrane set up with the inner wall clearance of nanofiltration tank.
The bottom of the rotary box is provided with an electromagnetic valve, the bottom of the fixed box is provided with a discharging barrel, and the discharging barrel is arranged at the lower end of the electromagnetic valve.
And a lifting pump is arranged on the water outlet pipe II.
And the adsorption device is provided with a slag discharge port and a water outlet.
The utility model has the advantages that: the utility model discloses at first utilize the impurity centrifugation of rotatory case in with the waste water to detach, then utilize to receive the filter membrane and separate dyestuff and inorganic salt, in order to prevent that the dyestuff deposit from receiving on the filter membrane, set for simultaneously and beat the device, beat the filter membrane, knock off the deposit dyestuff, realize the high efficiency separation of dyestuff and inorganic salt. Meanwhile, the adsorption device is used for adsorbing the wastewater, so that the water quality is purified, and the safety of the water quality is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2.
FIG. 3 is a schematic structural diagram of embodiment 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, the loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and resource recovery comprises a centrifugal device, a nanofiltration device and an adsorption device, wherein the centrifugal device comprises a fixed box 1, a rotary box 2 and a motor 3, the rotary box 2 is arranged in the fixed box 1, the rotary box 2 is connected with an output shaft of the motor 3, and the side wall of the rotary box 2 is provided with a permeable hole 5; a water outlet pipe I6 is arranged outside the fixed box 1, the water outlet pipe I6 is connected with a nanofiltration box 7, and a primary nanofiltration membrane 8 and a secondary nanofiltration membrane 9 are arranged in the nanofiltration box 7; and a water outlet pipe II 4 of the nanofiltration tank 7 is connected with an adsorption device, and the adsorption device is sequentially provided with an electrostatic adsorption plate 18, a resin adsorption layer 19 and a through hole 20 from top to bottom.
Be equipped with the water inlet (not drawing in the picture) in rotatory case 2 upper end, open motor 3 behind the waste water entering rotatory case 2, motor 3 drives rotatory case 2 rotatoryly, high-speed rotatory in-process, solid impurity in the waste water deposits in the bottom of rotatory case 2 under centrifugal force effect, waste water flows out from the hole 5 of permeating water and gets into fixed case 1, flow into through outlet pipe 6 and receive filter box 7 in, waste water passes through the filtering action of one-level receive filter membrane 8 and second grade receive filter membrane 9, carry out abundant separation with dyestuff and inorganic salt, waste water after the separation passes through elevator pump 21 and gets into adsorption equipment, electrostatic absorption plate 18 comprises positive plate and negative plate, adsorb the impurity in the sewage through electrostatic device, later utilize multiple adsorption equipment such as resin adsorption layer, purify quality of water, water flows out from the through-hole, guarantee the safety of quality of water.
Preferably, the bottom of the rotating box 2 is provided with an electromagnetic valve 13, the bottom of the fixed box 1 is provided with a discharging barrel 14, and the discharging barrel 14 is arranged at the lower end of the electromagnetic valve 13. The solid impurities filtered by the centrifugal action are discharged from the solenoid valve 13 and the discharging cylinder 14.
Preferably, the adsorption device is provided with a slag discharge port 22 and a water outlet 23.
Example 2
As shown in fig. 2, the primary nanofiltration membrane 8 is clamped between two elastic nets 15, a partition plate 16 is arranged on the inner wall of the nanofiltration tank 7, a spring 17 is arranged on the partition plate 16, the end part of the spring 17 is connected with the elastic nets 15, and the upper end and the lower end of the primary nanofiltration membrane 8 are arranged in a gap with the inner wall of the nanofiltration tank 7.
When waste water passes through the one-level nanofiltration membrane 8, under the effect of rivers, drive the elasticity net 15 and rock about, and then let the one-level nanofiltration membrane 8 rock, shake the dyestuff and fall.
The rest of the structure is the same as that of example 1.
Example 3
As shown in fig. 3, a beating device is arranged between the first-stage nanofiltration membrane 8 and the second-stage nanofiltration membrane 9, the beating device comprises an electric push rod 10 fixed on the nanofiltration box 7, the end of the electric push rod 10 is hinged with a beating rod 11, and the lower end of the beating rod 11 is provided with a beating ball 12.
In order to prevent the dye from depositing on the primary nanofiltration membrane 8, the primary nanofiltration membrane 8 is knocked by the knocking ball 12, and the dye is shaken off. Electric putter 10 passes through control switch and connects the power, and electric putter 10 beats 11 reciprocating motion through flexible drive, beats ball 12 and beats the one- level nanofiltration membrane 8, and 8 both ends of one-level nanofiltration membrane can be like embodiment 2, set up two elastic nets and protect it.
The rest of the structure is the same as that of example 1.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A loose nanofiltration membrane adsorption equipment for handling printing and dyeing wastewater and resource recovery, its characterized in that: the device comprises a centrifugal device, a nanofiltration device and an adsorption device, wherein the centrifugal device comprises a fixed box (1), a rotary box (2) and a motor (3), the rotary box (2) is arranged in the fixed box (1), the rotary box (2) is connected with an output shaft of the motor (3), and a water permeable hole (5) is formed in the side wall of the rotary box (2); a water outlet pipe I (6) is arranged outside the fixed box (1), the water outlet pipe I (6) is connected with a nanofiltration box (7), and a primary nanofiltration membrane (8) and a secondary nanofiltration membrane (9) are arranged in the nanofiltration box (7); and a water outlet pipe II (4) of the nanofiltration tank (7) is connected with an adsorption device, and the adsorption device is sequentially provided with an electrostatic adsorption plate (18), a resin adsorption layer (19) and a through hole (20) from top to bottom.
2. The loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and resource recovery according to claim 1, wherein the device comprises: be equipped with between one-level nanofiltration membrane (8) and second grade nanofiltration membrane (9) and beat the device, beat the device including fixing electric putter (10) on receiving filter box (7), the tip of electric putter (10) articulates there is beating pole (11), and the lower extreme of beating pole (11) is equipped with beats ball (12).
3. The loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and resource recovery according to claim 2, wherein the device comprises: one-level receive filter membrane (8) centre gripping between two elasticity net (15), receive and be equipped with baffle (16) on filter box (7) inner wall, be equipped with spring (17) on baffle (16), the tip of spring (17) links to each other with elasticity net (15), the upper end and the lower extreme of one-level receive filter membrane (8) and the inner wall clearance setting of receiving filter box (7).
4. The loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and resource recovery according to claim 1, wherein the device comprises: the bottom of the rotary box (2) is provided with an electromagnetic valve (13), the bottom of the fixed box (1) is provided with a discharging barrel (14), and the discharging barrel (14) is arranged at the lower end of the electromagnetic valve (13).
5. The loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and resource recovery according to claim 1, wherein the device comprises: and a lifting pump (21) is arranged on the water outlet pipe II (4).
6. The loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and resource recovery according to claim 1, wherein the device comprises: the adsorption device is provided with a slag discharge port (22) and a water outlet (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020704402.0U CN212024984U (en) | 2020-04-30 | 2020-04-30 | Loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and recycling resources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020704402.0U CN212024984U (en) | 2020-04-30 | 2020-04-30 | Loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and recycling resources |
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| Publication Number | Publication Date |
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| CN212024984U true CN212024984U (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020704402.0U Expired - Fee Related CN212024984U (en) | 2020-04-30 | 2020-04-30 | Loose nanofiltration membrane adsorption device for treating printing and dyeing wastewater and recycling resources |
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| CN (1) | CN212024984U (en) |
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2020
- 2020-04-30 CN CN202020704402.0U patent/CN212024984U/en not_active Expired - Fee Related
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