CN112624363A - Alkali recovery process and recovery device for alkali-containing wastewater - Google Patents
Alkali recovery process and recovery device for alkali-containing wastewater Download PDFInfo
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- CN112624363A CN112624363A CN202011315850.2A CN202011315850A CN112624363A CN 112624363 A CN112624363 A CN 112624363A CN 202011315850 A CN202011315850 A CN 202011315850A CN 112624363 A CN112624363 A CN 112624363A
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- 239000003513 alkali Substances 0.000 title claims abstract description 106
- 239000002351 wastewater Substances 0.000 title claims abstract description 35
- 238000011084 recovery Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 104
- 239000012535 impurity Substances 0.000 claims abstract description 71
- 238000001728 nano-filtration Methods 0.000 claims abstract description 46
- 238000010992 reflux Methods 0.000 claims abstract description 40
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- 239000000706 filtrate Substances 0.000 claims abstract description 18
- 239000012141 concentrate Substances 0.000 claims abstract description 7
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 71
- 238000004064 recycling Methods 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
- B01D29/035—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting with curved filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
Abstract
The invention discloses an alkali recovery process for alkali-containing wastewater, which comprises the following steps: s1, conveying the wastewater in the wastewater pool to a pretreatment device through a pipeline; s2, conveying the liquid filtered by the pretreatment device to an inlet of a nanofiltration device through a pipeline, and automatically moving the impurities filtered by the pretreatment device to an impurity cleaning device under the action of gravity; s3, conveying the liquid filtered by the nanofiltration device to a filtrate tank through a pipeline. According to the invention, impurities filtered out from the pretreatment device are accommodated by the impurity cleaning device, the liquid in the filtrate tank is conveyed to the impurity cleaning device through a pipeline, alkali liquor attached to the surface of the impurities in the impurity cleaning device is washed, the washing liquid containing a small amount of alkali liquor is conveyed to the nanofiltration device to concentrate the liquid, and the concentrated alkali-containing liquid is conveyed to the reflux tank, so that the small amount of alkali liquor attached to the surface of the impurities is recycled, and the waste of the alkali liquor is avoided.
Description
Technical Field
The invention relates to the technical field of alkali liquor recovery, in particular to an alkali recovery process and an alkali recovery device for alkali-containing wastewater.
Background
The alkali liquor recovery refers to the removal of hemicellulose and macromolecular substances in waste alkali liquor from wastewater in industries such as chemical fiber industry, printing and dyeing industry, paper making industry, pharmaceutical industry, food industry and the like, so as to realize the recycling of the waste alkali.
The existing process for recycling alkali in wastewater is characterized in that waste liquid is mostly filtered through a pretreatment device, filtered liquid is concentrated through a nanofiltration device, the amount of alkali in the liquid is adjusted through multiple times of concentration of the filtered liquid until the alkali content reaches the standard of alkali liquid recycling, but the alkali liquid mixed in impurities can be wasted due to the fact that the alkali liquid can not be used for filtering the attached alkali liquid on the impurities, and the recycling effect of the alkali liquid is influenced.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide an alkali recovery process and an alkali recovery device for alkali-containing wastewater, so as to solve the problems in the background technology.
2. Technical scheme
In order to solve the problems, the invention adopts the following technical scheme:
an alkali recovery process for alkali-containing wastewater, which comprises the following steps:
s1, conveying the wastewater in the wastewater pool to a pretreatment device through a pipeline;
s2, conveying the liquid filtered by the pretreatment device to an inlet of a nanofiltration device through a pipeline, and automatically moving the impurities filtered by the pretreatment device to an impurity cleaning device under the action of gravity;
s3, conveying the liquid filtered by the nanofiltration device to a filtrate tank through a pipeline, and conveying the liquid concentrated by the nanofiltration device to a reflux tank through a pipeline;
s4, conveying the liquid in the reflux pool to an inlet of a nanofiltration device through a pipeline again, concentrating the liquid in the reflux pool through the nanofiltration device again, conveying the liquid filtered by the nanofiltration device into a filtrate pool through the pipeline, allowing the liquid concentrated by the nanofiltration device to flow into the reflux pool again, detecting the alkali content of the liquid in the reflux pool, and recycling the alkali-containing concentrated liquid in the reflux pool when the alkali content in the concentrated liquid in the reflux pool reaches the standard of alkali liquid recycling;
s5, conveying the liquid in the filtrate tank to an impurity cleaning device through a pipeline, flushing alkali-containing liquid attached to the outer surface of the impurity in the impurity cleaning device through the liquid in the filtrate tank, conveying the flushed alkali-containing solution to a nanofiltration device through a pipeline, concentrating the alkali-containing liquid flushed from the outer surface of the impurity through the nanofiltration device, conveying the liquid filtered out by the nanofiltration device into a filtrate tank through a pipeline, conveying the alkali-containing liquid concentrated out by the nanofiltration device into a reflux tank through a pipeline, and then repeating the step S to concentrate the alkali-containing liquid in the reflux tank until the alkali content in the concentrated liquid in the reflux tank reaches the standard of alkali liquor recovery, and then recycling the alkali-containing concentrated liquid in the reflux tank.
The invention also provides a device adopted in the alkali recovery process of the alkali-containing wastewater, which comprises a pretreatment device and an impurity cleaning device, wherein the pretreatment device comprises a shell, an arc-shaped filter plate arranged in the shell, a water inlet arranged in the middle of the top end of the shell and positioned right above the arc-shaped filter plate, a water collecting tank arranged at the bottom of the shell and communicated with the arc-shaped filter plate, and a water outlet arranged at the bottom of the water collecting tank, wherein the water inlet is connected with a wastewater tank through a pipeline, the water outlet is connected with a nanofiltration device through a pipeline, a support frame is arranged at the bottom end of the shell, the impurity cleaning device comprises hollow cylinders symmetrically arranged at the left end and the right end of the shell and communicated with the interior of the shell, rotating shafts arranged in each hollow cylinder and parallel to the hollow cylinders, threaded blades arranged on each rotating shaft and used for conveying impurities in the hollow cylinders, a discharge hole arranged at, Locate the header tank of every cavity barrel bottom, set up filtration pore and equidistant installing in every cavity barrel top and be used for going on the inlet channel that erodees to the inside impurity of cavity barrel, the pipe connection on inlet channel and the backward flow pond, two the cavity barrel all is parallel with the arc filter, and cavity barrel, arc filter all incline to set up to cavity barrel, arc filter all from the front end gradually high setting to the rear end, every all set up on the cavity barrel with the inside intercommunication of casing and be located the intercommunication mouth of two tip of arc filter respectively, and the intercommunication mouth is located arc filter's bottommost department, the header tank passes through filtration pore and cavity barrel intercommunication, and is equipped with the outlet on the header tank.
Preferably, the water collecting tank is arranged to be of a funnel-shaped structure, and the water outlet is formed in the lowest end of the water collecting tank.
Preferably, the water collecting tank is arranged in parallel with the hollow cylinder, and the water outlet is formed in the lowest end of the water collecting tank.
Preferably, the water inlet is positioned right above the highest end of the arc-shaped filter plate.
3. Advantageous effects
1. According to the invention, impurities filtered out from the pretreatment device are accommodated by the impurity cleaning device, the liquid in the filtrate tank is conveyed to the impurity cleaning device through a pipeline, alkali liquor attached to the surface of the impurities in the impurity cleaning device is washed, the washing liquid containing a small amount of alkali liquor is conveyed to the nanofiltration device to concentrate the liquid, and the concentrated alkali-containing liquid is conveyed to the reflux tank, so that the small amount of alkali liquor attached to the surface of the impurities is recycled, and the waste of the alkali liquor is avoided.
2. According to the invention, through the inclined arrangement of the arc-shaped filter plate and the arrangement that the water inlet is positioned at the highest end of the arc-shaped filter plate, the waste liquid entering the pretreatment device can move to the lowest end of the arc-shaped filter plate and the bottom ends of the two sides of the arc-shaped filter plate along the highest end of the arc-shaped filter plate simultaneously, so that the flowing time of the waste liquid on the arc-shaped filter plate is prolonged, the arc-shaped filter plate can filter impurities in the waste liquid more fully, and the filtering effect of the arc-shaped filter plate is improved.
3. The hollow cylinder body is communicated with the pretreatment device, so that impurities filtered from the upper surface of the arc-shaped filter plate can directly pass through the communication port on the hollow cylinder body and enter the hollow cylinder body under the action of gravity, at the moment, the threaded blades on the rotating shaft can convey the impurities in the hollow cylinder body through the rotation of the rotating shaft in the hollow cylinder body, when the impurities are conveyed, the impurities in the hollow cylinder body can be gradually heightened from the front end to the rear end, when the impurities in the hollow cylinder body are conveyed to the high end of the impurities, alkali-containing liquid attached to the outer surface of the impurities can enter the water collecting tank through the filtering holes in the lower half part of the hollow cylinder body, so that the attachment amount of the alkali-containing liquid on the impurities is reduced, and in order to more fully utilize alkali liquor, when the impurities in the hollow cylinder body move to the high end of the hollow cylinder body, the conveyed impurities can be washed by the liquid in, therefore, the alkali-containing liquid attached to the surface of the impurity can fully enter the water collecting tank, the water collecting tank is connected with the nanofiltration device through a pipeline, the nanofiltration device can concentrate the alkali-containing liquid flushed from the surface of the impurity, the concentrated alkali-containing solution is conveyed to the reflux pool, and the alkali-containing liquid is stored through the reflux pool.
4. The communicating port is arranged at the bottommost end of the arc-shaped filter plate, so that impurities filtered out of the arc-shaped filter plate and liquid which does not pass through the filtering holes on the arc-shaped filter plate can only enter the hollow cylinder through the communicating port at the lower end of the arc-shaped filter plate.
Drawings
FIG. 1 is a schematic front view of the internal structure of the present invention;
FIG. 2 is a side view of a partial internal structure of the present invention;
FIG. 3 is a process flow diagram of the present invention.
Reference numerals: 1-a wastewater tank, 2-a pretreatment device, 3-an impurity cleaning device, 4-a nanofiltration device, 5-a backflow tank, 6-a filtrate tank, 21-a shell, 22-an arc-shaped filter plate, 23-a water inlet, 24-a water collecting tank, 25-a water outlet, 26-a support frame, 31-a hollow cylinder, 32-a rotating shaft, 33-a threaded blade, 34-a discharge port, 35-a filter hole, 36-a water collecting tank, 37-a water discharge port, 38-a communication port and 39-a water inlet pipeline.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
An alkali recovery process of alkali-containing wastewater as shown in fig. 1-3, comprising the following steps:
s1, conveying the wastewater in the wastewater tank 1 to the pretreatment device 2 through a pipeline;
s2, conveying the liquid filtered by the pretreatment device 2 to an inlet of the nanofiltration device 4 through a pipeline, and automatically moving the impurities filtered by the pretreatment device 2 to the impurity cleaning device 3 under the action of gravity;
s3, conveying the liquid filtered by the nanofiltration device 4 to a filtrate tank 6 through a pipeline, and conveying the liquid concentrated by the nanofiltration device 4 to a reflux tank 5 through a pipeline;
s4, conveying the liquid in the reflux pool 5 to an inlet of the nanofiltration device 4 again through a pipeline, concentrating the liquid in the reflux pool 5 again through the nanofiltration device 4, conveying the liquid filtered by the nanofiltration device 4 to the filtrate pool 6 through a pipeline, allowing the liquid concentrated by the nanofiltration device 4 to flow into the reflux pool 5 again, detecting the alkali content of the liquid in the reflux pool 5, and recycling the alkali-containing concentrated liquid in the reflux pool 5 when the alkali content in the concentrated liquid in the reflux pool 5 reaches the alkali liquid recycling standard;
s5, conveying the liquid in the filtrate tank 6 to the impurity cleaning device 3 through a pipeline, flushing the alkali-containing liquid attached to the outer surface of the impurity in the impurity cleaning device 3 through the liquid in the filtrate tank 6, conveying the flushed alkali-containing solution to the nanofiltration device 4 through a pipeline, concentrating the alkali-containing liquid flushed from the outer surface of the impurity through the nanofiltration device 4, conveying the liquid filtered out by the nanofiltration device 4 into the filtrate tank 6 through a pipeline, conveying the alkali-containing liquid concentrated out by the nanofiltration device 4 into the reflux tank 5 through a pipeline, and then repeating the step S4 to concentrate the alkali-containing liquid in the reflux tank 5 until the alkali content in the concentrated liquid in the reflux tank 5 reaches the alkali liquid recovery standard, and recycling the alkali-containing concentrated liquid in the reflux tank 5.
The device adopted in the alkali recovery process of the alkali-containing wastewater comprises a pretreatment device 2 and an impurity cleaning device 3, wherein the pretreatment device 2 comprises a shell 21, an arc-shaped filter plate 22 arranged in the shell 21, a water inlet 23 arranged in the middle of the top end of the shell 21 and positioned right above the arc-shaped filter plate 22, a water collecting tank 24 arranged at the bottom of the shell 21 and communicated with the arc-shaped filter plate 22, and a water outlet 25 arranged at the bottom of the water collecting tank 24, wherein the water inlet 23 is connected with the wastewater tank 1 through a pipeline, the water outlet 25 is connected with the nanofiltration device 4 through a pipeline, a support frame 26 is arranged at the bottom end of the shell 21, the water collecting tank 24 is of a funnel-shaped structure, the water outlet 25 is arranged at the lowest end of the water collecting tank 24, the funnel-shaped structure of the water collecting tank 24 can intensively collect water flow filtered by the arc-shaped filter plate 22, and filtered liquid is quickly discharged, the water inlet 23 is positioned right above the highest end of the arc-shaped filter plate 22, and the water inlet 23 is positioned at the highest end of the arc-shaped filter plate 22, so that the waste liquid entering the pretreatment device 2 can move to the lowest end of the arc-shaped filter plate 22 and the bottom end sides of the two sides of the arc-shaped filter plate simultaneously along the highest end of the arc-shaped filter plate 22, the flowing time of the waste liquid on the arc-shaped filter plate 22 is prolonged, the arc-shaped filter plate 22 can fully filter impurities in the waste liquid, and the filtering effect of the arc-shaped filter plate 22 is improved;
the impurity cleaning device 3 comprises hollow cylinders 31 symmetrically arranged at the left end and the right end of a shell 21 and communicated with the inside of the shell 21, rotating shafts 32 arranged inside each hollow cylinder 31 and parallel to the hollow cylinders 31, threaded blades 33 arranged on each rotating shaft 32 and used for conveying impurities inside the hollow cylinders 31, a discharge port 34 arranged at the rear end of each hollow cylinder 31 and used for discharging the impurities, a water collecting tank 36 arranged at the bottom end of each hollow cylinder 31, filtering holes 35 arranged on the lower half part of each hollow cylinder 31 and water inlet pipelines 39 which are arranged at the top end of each hollow cylinder 31 at equal intervals and used for flushing the impurities inside the hollow cylinders 31, wherein the water inlet pipelines 39 are connected with pipelines on a reflux pool 5, the two hollow cylinders 31 are both parallel to arc-shaped filter plates 22, the hollow cylinders 31 and the arc-shaped filter plates 22 are both obliquely arranged, and the hollow cylinders 31 and the arc-shaped filter plates 22 are both gradually heightened from the front end, each hollow cylinder 31 is provided with a communicating port 38 which is communicated with the inside of the shell 21 and is respectively positioned at two end parts of the arc-shaped filter plate 22, the communicating port 38 is positioned at the bottommost end part of the arc-shaped filter plate 22, the water collecting tank 36 is communicated with the hollow cylinder 31 through the filter hole 35, the water collecting tank 36 is provided with a water outlet 37, the water collecting tank 36 is arranged in parallel with the hollow cylinder 31, the water outlet 37 is arranged at the bottommost end of the water collecting tank 36, the water collecting tank 36 is arranged in parallel with the hollow cylinder 31, so that the liquid filtered out from the hollow cylinder 31 can flow to the bottommost end part of the water collecting tank 36 along the inner bottom part of the water collecting tank 36, the filtered liquid can be concentrated and gathered at the bottommost end part of the water collecting tank 36, and the drainage effect of the.
The specific application process of the device adopted in the alkali recovery process of the alkali-containing wastewater comprises the following steps: the waste water in the waste water tank 1 is transmitted to the water inlet 23 on the shell 21 through a pipeline, the waste water passes through the water inlet 23 and falls into the highest end of the arc-shaped filter plate 22, secondly, the waste water can move towards the lowest end and two sides of the end of the arc-shaped filter plate 22 along the highest end of the arc-shaped filter plate 22, in the moving process of the waste water, the liquid can pass through the filter holes on the arc-shaped filter plate 22 and enter into the water collecting tank 24, the threaded blades 33 on the rotating shafts 32 can convey impurities inside the hollow cylinder 31 through the rotation of the rotating shafts 32 inside the hollow cylinder 31, when the impurities are conveyed, the alkali-containing liquid attached to the outer surface of the impurities can enter into the water collecting tank 36 through the filter holes 35 on the lower half part of the hollow cylinder 31 through the arrangement that the hollow cylinder 31 is gradually higher from the front end to the rear end, so as to reduce the attachment amount of the alkali, in order to make more full use of alkali liquor, when impurities in the hollow cylinder 31 move to the high end of the hollow cylinder, the impurities which are being conveyed can be washed by liquid conveyed in the water inlet pipeline 39, so that alkali-containing liquid attached to the surfaces of the impurities can sufficiently enter the water collecting tank 36, the water collecting tank 36 is connected with a pipeline of the nanofiltration device 4, the nanofiltration device 4 can concentrate the alkali-containing liquid washed from the surfaces of the impurities, the concentrated alkali-containing liquid is conveyed to the reflux pool 5, and the alkali-containing liquid is stored through the reflux pool 5, so that the use process of the device adopted in the alkali recovery process of the alkali-containing wastewater is completed.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (5)
1. An alkali recovery process for alkali-containing wastewater is characterized by comprising the following steps:
s1, conveying the wastewater in the wastewater tank (1) to a pretreatment device (2) through a pipeline;
s2, conveying the liquid filtered by the pretreatment device (2) to an inlet of a nanofiltration device (4) through a pipeline, and automatically moving the impurities filtered by the pretreatment device (2) to an impurity cleaning device (3) under the action of gravity;
s3, conveying the liquid filtered by the nanofiltration device (4) to a filtrate tank (6) through a pipeline, and conveying the liquid concentrated by the nanofiltration device (4) to a reflux tank (5) through a pipeline;
s4, conveying the liquid in the reflux pool (5) to an inlet of a nanofiltration device (4) through a pipeline again, concentrating the liquid in the reflux pool (5) through the nanofiltration device (4) again, transmitting the liquid filtered by the nanofiltration device (4) to a filtrate pool (6) through a pipeline, allowing the liquid concentrated by the nanofiltration device (4) to flow into the reflux pool (5) again, detecting the alkali content of the liquid in the reflux pool (5), and recycling the alkali-containing concentrated liquid in the reflux pool (5) when the alkali content in the concentrated liquid in the reflux pool (5) reaches the alkali liquid recycling standard;
s5, transmitting the liquid in the filtrate tank (6) to an impurity cleaning device (3) through a pipeline, the liquid in the filtering liquid pool (6) is used for washing the alkali-containing liquid attached to the outer surface of the impurities in the impurity cleaning device (3), the alkali-containing solution washed off is conveyed to a nanofiltration device (4) through a pipeline, the alkali-containing liquid flushed from the outer surface of the impurities is concentrated by a nanofiltration device (4), the liquid filtered by the nanofiltration device (4) enters a filtrate tank (6) through a pipeline, the alkali-containing liquid concentrated by the nanofiltration device (4) enters a reflux pool (5) through a pipeline, and then repeating the step of S4 to concentrate the alkali-containing liquid in the reflux pool (5), and recycling the alkali-containing concentrated liquid in the reflux pool (5) until the alkali content in the concentrated liquid in the reflux pool (5) reaches the standard of alkali liquor recycling.
2. The recovery device used in the alkali recovery process of alkali-containing wastewater according to claim 1, comprising a pretreatment device (2) and an impurity cleaning device (3), wherein the pretreatment device (2) comprises a shell (21), an arc-shaped filter plate (22) arranged in the shell (21), a water inlet (23) arranged in the middle of the top end of the shell (21) and positioned right above the arc-shaped filter plate (22), a water collecting tank (24) arranged at the bottom of the shell (21) and communicated with the arc-shaped filter plate (22), and a water outlet (25) arranged at the bottom of the water collecting tank (24), wherein the water inlet (23) is connected with a wastewater tank (1) through a pipeline, the water outlet (25) is connected with a nanofiltration device (4) through a pipeline, a support frame (26) is arranged at the bottom end of the shell (21), and the impurity cleaning device (3) comprises a hollow cylinder (31) which is symmetrically arranged at the left end and the right end of the shell (21) and is communicated with the, The filter comprises rotating shafts (32) which are arranged inside each hollow cylinder (31) and are parallel to the hollow cylinders (31), threaded blades (33) which are arranged on each rotating shaft (32) and are used for conveying impurities inside the hollow cylinders (31), a discharge hole (34) which is arranged at the rear end of each hollow cylinder (31) and is used for discharging the impurities, a water collecting tank (36) which is arranged at the bottom end of each hollow cylinder (31), filter holes (35) which are arranged on the lower half part of each hollow cylinder (31), and water inlet pipelines (39) which are arranged at the top end of each hollow cylinder (31) at equal intervals and are used for washing the impurities inside the hollow cylinders (31), wherein the water inlet pipelines (39) are connected with a pipeline on the backflow tank (5), the two hollow cylinders (31) are parallel to the arc-shaped filter plates (22), and the hollow cylinders (31) and the arc-shaped filter plates (22) are obliquely arranged, and cavity barrel (31), arc filter (22) all from the front end to the back end gradually high setting, every all set up on cavity barrel (31) with inside intercommunication of casing (21) and be located intercommunication mouth (38) of two tip of arc filter (22) respectively, and intercommunication mouth (38) are located the bottommost department of arc filter (22), header tank (36) are through crossing filtration pore (35) and cavity barrel (31) intercommunication, and are equipped with outlet (37) on header tank (36).
3. A recycling apparatus used in the alkali recycling process of alkali-containing wastewater according to claim 2, wherein the water collection tank (24) is configured as a funnel-shaped structure, and the water outlet (25) is provided at the lowest end of the water collection tank (24).
4. The recycling apparatus for alkali recycling process of alkali-containing wastewater as claimed in claim 2, wherein said water collection tank (36) is disposed in parallel with the hollow cylinder (31), and said drain port (37) is disposed at the lowest end of the water collection tank (36).
5. The recycling apparatus for alkali recycling process of alkali-containing wastewater as set forth in claim 2, wherein said water inlet (23) is located right above the highest end of the arc-shaped filter plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011315850.2A CN112624363A (en) | 2020-11-22 | 2020-11-22 | Alkali recovery process and recovery device for alkali-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011315850.2A CN112624363A (en) | 2020-11-22 | 2020-11-22 | Alkali recovery process and recovery device for alkali-containing wastewater |
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| Publication Number | Publication Date |
|---|---|
| CN112624363A true CN112624363A (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011315850.2A Withdrawn CN112624363A (en) | 2020-11-22 | 2020-11-22 | Alkali recovery process and recovery device for alkali-containing wastewater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689945A (en) * | 2011-03-24 | 2012-09-26 | 吕维学 | Device for treating alkaliferous waste water through nanofiltration |
| CN104549994A (en) * | 2013-10-25 | 2015-04-29 | 大连捌伍捌创新工场科技服务有限公司 | Food screening and cleaning machine |
| CN105536330A (en) * | 2016-01-29 | 2016-05-04 | 象山金鑫轻工机械厂 | Renewable spent lye filter device and using method thereof |
| CN105692769A (en) * | 2016-04-01 | 2016-06-22 | 山东奥美环境股份有限公司 | Continuous synchronous adsorption-regeneration softener |
| CN207108615U (en) * | 2017-06-22 | 2018-03-16 | 重庆中鼎三正科技有限公司 | A kind of efficient sewage treatment installation |
-
2020
- 2020-11-22 CN CN202011315850.2A patent/CN112624363A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689945A (en) * | 2011-03-24 | 2012-09-26 | 吕维学 | Device for treating alkaliferous waste water through nanofiltration |
| CN104549994A (en) * | 2013-10-25 | 2015-04-29 | 大连捌伍捌创新工场科技服务有限公司 | Food screening and cleaning machine |
| CN105536330A (en) * | 2016-01-29 | 2016-05-04 | 象山金鑫轻工机械厂 | Renewable spent lye filter device and using method thereof |
| CN105692769A (en) * | 2016-04-01 | 2016-06-22 | 山东奥美环境股份有限公司 | Continuous synchronous adsorption-regeneration softener |
| CN207108615U (en) * | 2017-06-22 | 2018-03-16 | 重庆中鼎三正科技有限公司 | A kind of efficient sewage treatment installation |
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Application publication date: 20210409 |