CN216890444U

CN216890444U - Physicochemical treatment and solid-liquid separation device in water treatment

Info

Publication number: CN216890444U
Application number: CN202220473568.5U
Authority: CN
Inventors: 杨道林; 周乔; 马晨皓; 朱良; 代罡; 钟庆; 赵炯; 黄钰婷; 方达; 李鹏程; 顾单玲
Original assignee: Jiangsu Ruida Environmental Technology Co ltd
Current assignee: Jiangsu Ruida Environmental Technology Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-05
Anticipated expiration: 2032-03-04

Abstract

The utility model relates to the technical field of water treatment, in particular to a physicochemical treatment and solid-liquid separation device in water treatment, which solves the problem that the water treatment efficiency in the prior art needs to be improved. A physicochemical treatment and solid-liquid separation device in water treatment comprises: remove hard reaction system, including reactor and agitator, the reactor intercommunication has the inlet tube, the reactor is inside to be divided into four reaction chambers, the agitator is provided with four. The utility model combines the hardness removing reaction system and the separation and filtration system, realizes the water treatment device integrating sewage hardness removal and membrane filtration separation, simultaneously ensures the continuous stability of water treatment by alternately working and back flushing the first membrane filter and the second membrane filter, and has higher water treatment efficiency, continuous and stable use of water treatment and stronger usability compared with the prior hardness removing device.

Description

Physicochemical treatment and solid-liquid separation device in water treatment

Technical Field

The utility model relates to the technical field of water treatment, in particular to a physicochemical treatment and solid-liquid separation device in water treatment.

Background

The chemical hardness removal is to add an alkaline agent such as lime, sodium hydroxide, sodium carbonate and the like into water to react with calcium and magnesium ions in the water to generate calcium carbonate and magnesium hydroxide precipitates, so that the calcium and magnesium ions in the water are separated out in a solid phase form. Chemical hardness removal is a treatment means which is necessary before the sewage is recycled by using reverse osmosis, and scale formation can be prevented only by removing hardness. The existing reactor applied to chemical hardness removal is mainly a high-density coagulation tank.

A high-density sedimentation tank (hereinafter referred to as a high-density tank) is a novel clarification tank based on inclined tube sedimentation and sludge backflow technology. The high-density sedimentation tank is divided into 4-5 grids, and consists of a coagulation tank, a lime adding tank, a Na2CO3 reaction tank, a flocculation tank and an inclined tube sedimentation tank. The auxiliary pump facilities comprise a stirrer, a mud scraper, a sludge circulating pump and a sludge discharge pump. The reaction principle is to control the crystal form, volume and quantity of the generated calcium carbonate and magnesium hydroxide crystals. If the reaction equilibrium is controlled only, the generated calcium-magnesium crystals are large in quantity and small in volume, and most of the calcium-magnesium crystals exist in a colloidal state. Such colloidal slurries are difficult to filter and separate.

Therefore, the key of better filtering and settling of sludge is to control the dynamic process of the hardness removal reaction while ensuring the thermodynamic equilibrium of the hardness removal reaction, and thus, the physicochemical treatment and solid-liquid separation device in water treatment is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a physicochemical treatment and solid-liquid separation device in water treatment, which solves the problem that the water treatment efficiency needs to be improved in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a physicochemical treatment and solid-liquid separation device in water treatment comprises:

the hardness removal reaction system comprises a reactor and four stirrers, wherein the reactor is communicated with a water inlet pipe, the interior of the reactor is divided into four reaction chambers, the four stirrers are arranged to stir the four reaction chambers respectively, the four reaction chambers are communicated with each other, and the bottom ends of the four reaction chambers are communicated with the same water delivery pipe;

the filtering and separating system comprises a first membrane filter and a second membrane filter, the first membrane filter and the second membrane filter are identical in structure, the first membrane filter comprises a backwashing driving piece, a column plate and a PI detector, a plurality of filter membrane cylinders are connected to the bottom of the column plate, so that the first membrane filter is divided into a clear liquid area, a filtering area and a sludge deposition area from top to bottom, the first membrane filter, the second membrane filter and the clear liquid area are connected with a same first water outlet pipe, the bottoms of the first membrane filter and the second membrane filter are connected with a same second water outlet pipe, one end of the backwashing driving piece is communicated with the clear liquid area, the other end of the backwashing driving piece is communicated with a spray head opposite to the filter membrane cylinders, and a water conveying pipe is communicated with the filtering area of the first membrane filter or communicated with the filtering area of the second membrane filter.

Preferably, the top of each of the four reaction chambers is respectively communicated with a first feeding pipe, a second feeding pipe, a fourth feeding pipe and a fifth feeding pipe so as to respectively and correspondingly feed lime, calcium carbonate, PAC and PAM, the reaction chamber for feeding calcium carbonate is also provided with a third feeding pipe and a PH detector, and the third feeding pipe is used for feeding sodium hydroxide.

Preferably, the water inlet pipe is provided with a water inlet valve, the bottom ends of the four reaction chambers are respectively provided with a water through valve, the water conveying pipe is communicated with a water conveying pipe, the communicating end of the water conveying pipe and the first membrane filter is provided with a valve A, the communicating end of the water conveying pipe and the second membrane filter is provided with a valve B, and the detection end of the PI detector extends into the corresponding clear liquid area.

Preferably, a valve C is arranged on a communicating pipe between the first membrane filter and the first water outlet pipe, and a valve D is arranged on a communicating pipe between the second membrane filter and the first water outlet pipe.

Preferably, a valve E is arranged on a communicating pipe between the first membrane filter and the second water outlet pipe, and a valve F is arranged on a communicating pipe between the second membrane filter and the second water outlet pipe.

Preferably, the device also comprises a support frame, the support frame is wrapped outside the hard reaction system and the filtering and separating system, and a bracket used for respectively supporting the hard reaction system and the filtering and separating system is arranged on the support frame.

The utility model has at least the following beneficial effects:

through will remove hard reaction system and separation filtration system and combine, when having realized that sewage removes hard and integrative water treatment facilities of membrane filtration separation, first membrane filter and second membrane filter alternate work, and the continuous stability of water treatment has been guaranteed in back flush in turn, compares with current except that hard device, and water treatment efficiency increases, and water treatment can continuous stable operation work, and the usability is stronger.

The utility model also has the following beneficial effects:

1. through removing the setting of hard sediment clarification integrated device, reduce equipment area, intake simultaneously adopts the pipeline static mixer main formula for the chemical agent to add, increases chemical agent and the mixed degree of intaking like this, can dwindle reaction time like this.

2. After filtering for a period of time, the clear liquid zone reversely flows from inside to outside, membrane backwashing is carried out, so that a small amount of sludge attached to the surface of the membrane is separated from the surface of the membrane, the water production effect is good, the turbidity of the produced water is below 1NTU, and the retention rate is 99.5%.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a physical-chemical treatment and solid-liquid separation apparatus;

FIG. 2 is a schematic view of a reaction system for removing hardness;

FIG. 3 is a schematic diagram of a filtration and separation system.

In the figure: 1. a hardness removal reaction system; 101. a reactor; 102. a reaction chamber; 103. a first feeding pipe; 104. a second feeding pipe; 105. a pH detector; 106. a third feeding pipe; 107. a fourth feeding pipe; 108. a fifth feeding pipe; 109. a stirrer; 2. a water inlet pipe; 3. a filtration and separation system; 301. a first membrane filter; 302. a second membrane filter; 303. a backwash driving member; 304. a PI detector; 305. a water supply pipe; 306. a column plate; 4. a first water outlet pipe; 5. a second water outlet pipe; 6. a water inlet valve; 7. a water valve; 8. a water delivery pipe; 9. a valve A; 10. a valve B; 11. a valve C; 12. a valve D; 13. a valve E; 14. a valve F; 15. a support frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 3, a physical and chemical treatment and solid-liquid separation apparatus in water treatment includes:

the hardness removal reaction system 1 comprises a reactor 101 and four stirrers 109, wherein the reactor 101 is communicated with a water inlet pipe 2, the inside of the reactor 101 is divided into four reaction chambers 102, the four stirrers 109 are arranged to stir the four reaction chambers 102 respectively, the four reaction chambers 102 are communicated with each other, and the bottom ends of the four reaction chambers 102 are communicated with the same water conveying pipe 8;

the filtering and separating system 3 comprises a first membrane filter 301 and a second membrane filter 302, the first membrane filter 301 and the second membrane filter 302 are identical in structure, the first membrane filter 301 comprises a backwashing driving member 303, a tower plate 306 and a PI detector 304, the bottom of the tower plate 306 is connected with a plurality of filter membrane cylinders so that the first membrane filter 301 is divided into a clear liquid area, a filtering area and a sludge deposition area from top to bottom, the first membrane filter 301, the second membrane filter 302 and the clear liquid area are connected with a same first water outlet pipe 4, the bottoms of the first membrane filter 301 and the second membrane filter 302 are connected with a same second water outlet pipe 5, one end of the backwashing driving member 303 is communicated with the clear liquid area, the other end of the backwashing driving member is communicated with nozzles facing the plurality of filter membrane cylinders, and a water conveying pipe 8 is communicated with the filtering area of the first membrane filter 301 or the filtering area of the second membrane filter 302;

the scheme has the following working processes: by adding water from the water inlet pipe 2 of the hardness removing reaction system 1, sewage respectively reacts in the four reaction chambers 102 for hardness removal and precipitation, and then firstly passes into the first membrane filter 301, the produced water in the first membrane filter 301 is filtered to the clear liquid area at the top by the membrane filtering barrel and flows out from the first water outlet pipe 4, when the solid particles trapped on the surface of the filter membrane cylinder of the first membrane filter 301 increase and the filtration resistance increases, the first membrane filter 301 stops the water filtration treatment, at this time, the second membrane filter 302 is in a water filtration treatment state, at this time, the first membrane filter 301 and the first water outlet pipe 4 are in a closed communication state, then the back washing driving part 303 is started, the back washing driving part 303 uses the clear water retained in the clear liquid area to back wash from the inside of the filter membrane cylinder to the outside of the filter membrane cylinder, so as to wash away solid particles on the surface of the membrane, thereby ensuring the stability of the first membrane filter 301 for continuously carrying out water treatment; the water treatment device integrating sewage hardness removal and membrane filtration separation is realized, compared with the existing hardness removal device, the water treatment efficiency is increased, the water treatment can be continuously and stably used, and the usability is stronger.

Further, the top of the four reaction chambers 102 are respectively communicated with a first feeding pipe 103, a second feeding pipe 104, a fourth feeding pipe 107 and a fifth feeding pipe 108 for respectively and correspondingly feeding lime, calcium carbonate, PAC and PAM, the reaction chamber 102 into which the calcium carbonate is fed is further provided with a third feeding pipe 106 and a PH detector 105, the third feeding pipe 106 is used for feeding sodium hydroxide, and specifically, the PH detector 105 is used for detecting the pH value of the water after hardness removal.

Further, a water inlet valve 6 is installed on the water inlet pipe 2, water passing valves 7 are respectively installed at the bottom ends of the four reaction chambers 102, a water delivery pipe 8 is communicated with a water delivery pipe 305, a valve a9 is installed at the communication end of the water delivery pipe 305 and the first membrane filter 301, a valve B10 is installed at the communication end of the water delivery pipe 305 and the second membrane filter 302, the detection end of the PI detector 304 extends into a corresponding clear liquid area, a valve C11 is installed on a communication pipe between the first membrane filter 301 and the first water outlet pipe 4, a valve D12 is installed on a communication pipe between the second membrane filter 302 and the first water outlet pipe 4, a valve E13 is installed on a communication pipe between the first membrane filter 301 and the second water outlet pipe 5, and a valve F14 is installed on a communication pipe between the second membrane filter 302 and the second water outlet pipe 5, specifically:

when the first membrane filter 301 is in filtration operation, the valve a9 and the valve C11 are in an open state, and the valve B10, the valve D12, the valve F14 and the valve E13 are in a closed state;

when the first membrane filter 301 is back flushed, valve a9 and valve C11 are closed, valve E13, valve B10 and valve D12 are opened, and valve F14 is closed;

when the second membrane filter 302 is filtering, valve a9, valve C11, valve E13 are closed, valve B10 and valve D12 are open, and valve F14 is closed;

when the second membrane filter 302 is backflushed, valve a9 and valve C11 are open, valve E13 is closed, and valve B10, valve D12, and valve F14 are open.

Further, still include support frame 15, support frame 15 package is established except that hard reaction system 1 and filtration piece-rate system 3, is provided with the bracket that is used for holding respectively except that hard reaction system 1 and filtration piece-rate system 3 on support frame 15.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A physicochemical treatment and solid-liquid separation device in water treatment is characterized by comprising:

the hardness removal reaction system (1) comprises a reactor (101) and four stirrers (109), wherein the reactor (101) is communicated with a water inlet pipe (2), the inside of the reactor (101) is divided into four reaction chambers (102), the number of the stirrers (109) is four, the four reaction chambers (102) are respectively stirred, the four reaction chambers (102) are communicated with each other, and the bottom ends of the four reaction chambers (102) are communicated with the same water conveying pipe (8);

the filtering and separating system (3) comprises a first membrane filter (301) and a second membrane filter (302), the first membrane filter (301) and the second membrane filter (302) are identical in structure, the first membrane filter (301) comprises a backwashing driving part (303), a tower plate (306) and a PI detector (304), the bottom of the tower plate (306) is connected with a plurality of filter membrane cylinders, so that the first membrane filter (301) is divided into a clear liquid area, a filtering area and a sludge deposition area from top to bottom, the first membrane filter (301), the second membrane filter (302) and the clear liquid area are connected with the same first water outlet pipe (4), the bottoms of the first membrane filter (301) and the second membrane filter (302) are connected with the same second water outlet pipe (5), one end of the backwashing driving part (303) is communicated with the clear liquid area, and the other end of the backwashing driving part is communicated with spray heads facing the filter membrane cylinders, the water conveying pipe (8) is communicated with the filtering area of the first membrane filter (301) or the filtering area of the second membrane filter (302).

2. The device for materialization treatment and solid-liquid separation in water treatment according to claim 1, wherein the top of each of the four reaction chambers (102) is respectively communicated with a first feeding pipe (103), a second feeding pipe (104), a fourth feeding pipe (107) and a fifth feeding pipe (108) for feeding lime, calcium carbonate, PAC and PAM correspondingly, the reaction chamber (102) for feeding calcium carbonate is further provided with a third feeding pipe (106) and a PH detector (105), and the third feeding pipe (106) is used for feeding sodium hydroxide.

3. The device for materialization treatment and solid-liquid separation in water treatment according to claim 1, wherein a water inlet valve (6) is installed on the water inlet pipe (2), water passing valves (7) are respectively installed at the bottom ends of the four reaction chambers (102), the water conveying pipe (8) is communicated with a water conveying pipe (305), a valve A (9) is installed at the communication end of the water conveying pipe (305) and the first membrane filter (301), a valve B (10) is installed at the communication end of the water conveying pipe (305) and the second membrane filter (302), and the detection end of the PI detector (304) extends into the corresponding clear liquid area.

4. The apparatus for physical and chemical treatment and solid-liquid separation in water treatment according to claim 1, wherein a valve C (11) is installed on a communication pipe between the first membrane filter (301) and the first water outlet pipe (4), and a valve D (12) is installed on a communication pipe between the second membrane filter (302) and the first water outlet pipe (4).

5. The apparatus for physicochemical treatment and solid-liquid separation in water treatment according to claim 1, wherein a valve E (13) is attached to a communication pipe between the first membrane filter (301) and the second water outlet pipe (5), and a valve F (14) is attached to a communication pipe between the second membrane filter (302) and the second water outlet pipe (5).

6. The device for physicochemical treatment and solid-liquid separation in water treatment according to claim 1, further comprising a support frame (15), wherein the support frame (15) is wrapped outside the hardness-removing reaction system (1) and the filtration separation system (3), and brackets for respectively supporting the hardness-removing reaction system (1) and the filtration separation system (3) are arranged on the support frame (15).