Standard integrated system for feed water treatment

Abstract

The utility model discloses a standard integrated system for feed water treatment, belongs to the technical field of water treatment, and solves the problems of large occupied area and higher cost of the existing water plant. The system comprises a grating pretreatment system, a mixing system, a flocculation basin system, a sedimentation basin system and a V-shaped basin filtering system which are connected in sequence, the grating pretreatment system is connected with a main water inlet pipe, the water outlet end of the V-shaped basin filtering system is connected with a backwashing basin through a V-shaped basin water outlet pipe, and the V-shaped basin water outlet pipe is further connected to a backwashing water adjusting basin. A first valve is arranged at one end, close to the backwashing tank, of the V-shaped tank water outlet pipe, a second valve is arranged at one end, close to the backwashing water adjusting tank, of the V-shaped tank water outlet pipe, the backwashing tank is connected to a V-shaped tank filtering system through a backwashing pipe, a backwashing water pump and a third valve are arranged at one end, close to the backwashing tank, of the backwashing pipe, and the backwashing tank is connected with a main water outlet pipe. Due to the compact integrated design, connecting pipelines between structures can be saved, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment, and in particular relates to a standard integrated system for water treatment. Background Art

[0002] At present, the cost of building new water plants in some small and medium-sized cities in my country is relatively high, with a large number of structures and buildings and a large land area. It is necessary to comprehensively consider factors such as the scale of the water plant, project investment, and project cycle. The notable features of integrated water treatment technology are saving connecting pipes between structures, small head loss, reduced operating costs, convenient operation and management, reduced land occupation, and reduced project investment. In addition, the development of sewage collection and treatment technology has become mature, but in terms of recycled water utilization, due to the lack of overall understanding and systematic planning, blind infrastructure construction has led to serious waste of resources and funds.

[0003] In view of this, the utility model provides a standard integrated system for water treatment. In terms of water treatment, it has the characteristics of being able to simplify the complex design process, the process should be flexible, can adapt to certain changes in water quality and water quantity, greatly shorten the working cycle, reduce the design cost, simple operation and management, and improve water treatment efficiency. Utility Model Content

[0004] The utility model aims to provide a standard integrated system for water treatment to solve the problems of large floor space and high cost of existing water plants.

[0005] The technical scheme of the utility model is: a standard integrated system for water treatment, comprising a grid pretreatment system, a mixing system, a flocculation tank system, a sedimentation tank system and a V-type tank filtration system connected in sequence, the grid pretreatment system is connected with a main water inlet pipe, the water outlet end of the V-type tank filtration system is connected with a backwash tank through a V-type tank outlet pipe, the V-type tank outlet pipe is also connected to a backwash water regulating tank, a first valve is provided at one end of the V-type tank outlet pipe close to the backwash tank, a second valve is provided at one end of the V-type tank outlet pipe close to the backwash water regulating tank, the backwash tank is connected to the V-type tank filtration system through a backwash pipe, a backwash water pump and a third valve are provided at one end of the backwash pipe close to the backwash tank, and the backwash tank is connected with the main water outlet pipe.

[0006] As a further improvement of the utility model, the backwash water regulating tank is connected to the main water inlet pipe through a return pipe.

[0007] As a further improvement of the utility model, the grid pretreatment system and the mixing system are connected via a connecting pipe.

[0008] As a further improvement of the utility model, the mixing system includes a stage I mixing tank and a stage II mixing tank connected in series, the stage I mixing tank is connected to a connecting pipe, and the stage II mixing tank is connected to a flocculation tank system.

[0009] As a further improvement of the utility model, the flocculation tank system includes a flocculation reaction zone and a water outlet zone. The flocculation reaction zone is connected to the level II mixing tank through a water hole, and the water outlet zone is connected to the sedimentation tank system. The flocculation reaction zone is connected to multiple sludge discharge branch pipes, and the sludge discharge branch pipes are collectively connected to the sludge discharge main pipe.

[0010] As a further improvement of the utility model, the sedimentation tank system includes a front sedimentation zone and multiple inclined tube sedimentation zones. The front sedimentation zone is connected to the water outlet zone through a water hole. The multiple inclined tube sedimentation zones are arranged side by side. A water collecting trough is provided between adjacent inclined tube sedimentation zones. The bottom of the inclined tube sedimentation zone is connected to the front sedimentation zone, and the upper part of the inclined tube sedimentation zone is connected to the water collecting trough. The water collecting troughs are connected to a main outlet channel, the main outlet channel is connected to a V-shaped tank filtration system, and the main outlet channel is connected to a sedimentation tank mud discharge pipe.

[0011] As a further improvement of the utility model, it also includes a mud water regulating tank, the mud main pipe and the sedimentation tank mud pipe are both connected to the mud water regulating tank, and the mud water regulating tank is connected to a mud water outlet pipe.

[0012] As a further improvement of the present invention, the V-shaped pool filtration system includes an inlet channel and multiple single-cell V-shaped filter tanks, the inlet channel is connected to the main outlet channel, the multiple single-cell V-shaped filter tanks are arranged side by side, the upper part of the single-cell V-shaped filter tank is connected to the inlet channel, the bottom of the single-cell V-shaped filter tank is connected to an outlet branch pipe, and the outlet branch pipes are collectively connected to the V-shaped pool outlet pipe.

[0013] As a further improvement of the utility model, a plurality of backwashing branch pipes are connected to the backwashing pipe, and each backwashing branch pipe is connected to each single-cell V-shaped filter tank in a one-to-one correspondence.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model designs a standard integrated system for water treatment. The compact integrated design can save connecting pipes between structures, reduce head loss, and reduce operating costs.

[0016] 2. The utility model adopts an integrated design, which is beneficial to reducing the footprint of the water plant, reducing investment costs, and facilitating operation and management; at the same time, it can effectively improve engineering design efficiency, construction efficiency, and shorten the water plant construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] In the figure: 1- main water inlet pipe; 2- grid pretreatment system; 201-I channel; 202- II channel; 203-III channel; 3- connecting pipe; 4- mixing system; 401-I-level mixing tank; 402-II-level mixing tank; 5- flocculation tank system; 501- flocculation reaction zone; 502- outlet zone; 503- mud discharge branch pipe; 504- mud discharge main pipe; 6- sedimentation tank system; 601- front sedimentation zone; 602- inclined tube sedimentation zone; 603- inclined tube; 605- water collection tank; 606- main water outlet channel; 607- sedimentation tank mud discharge pipe; 7- V-type pool filtration system; 701- water inlet channel; 702- single-cell V-type filter tank; 703- outlet branch pipe; 704- first valve; 706- V-shaped pool outlet pipe; 707-first valve; 8-backwash pool; 801-backwash water pump; 802-third valve; 803-backwash pipe; 804-backwash branch pipe; 9-backwash water regulating pool; 901-first mixer; 902-reflux pump; 903-reflux pipe; 10-mud water regulating pool; 1001-second mixer; 1002-mud water outlet pipe; 11-main outlet pipe. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1 As shown, a standard integrated system for water treatment includes a grid pretreatment system 2, a mixing system 4, a flocculation tank system 5, a sedimentation tank system 6 and a V-type tank filtration system 7 connected in sequence, the grid pretreatment system 2 is connected to a main water inlet pipe 1, the outlet end of the V-type tank filtration system 7 is connected to a backwash tank 8 through a V-type tank outlet pipe 706, the V-type tank outlet pipe 706 is also connected to a backwash water regulating tank 9, a first valve 704 is provided at one end of the V-type tank outlet pipe 706 close to the backwash tank 8, a second valve 707 is provided at one end of the V-type tank outlet pipe 706 close to the backwash water regulating tank 9, the backwash tank 8 is connected to the bottom of the V-type tank filtration system 7 through a backwash pipe 803, a backwash water pump 801 and a third valve 802 are provided at one end of the backwash pipe 803 close to the backwash tank 8, and the backwash tank 8 is connected to a main water outlet pipe 11.

[0021] The backwash water regulating tank 9 is connected to the main water inlet pipe 1 through a return pipe 903, and a return pump 902 is provided on the return pipe 903. A first mixer 901 is provided in the backwash water regulating tank 9.

[0022] The grid pretreatment system 2 and the mixing system 4 are connected via a connecting pipe 3 , and the connecting pipe 3 is connected to the bottom of the grid pretreatment system 2 .

[0023] The mixing system 4 includes a level I mixing tank 401 and a level II mixing tank 402 connected in series. The level I mixing tank 401 and the level II mixing tank 402 are plug-flow type mechanical stirring mixing tanks. The level I mixing tank 401 is connected to the connecting pipe 3, and the level II mixing tank 402 is connected to the flocculation tank system 5.

[0024] The flocculation tank system 5 includes a flocculation reaction zone 501 and a water outlet zone 502. The flocculation reaction zone 501 is connected to the level II mixing tank 402 through a water hole, and the water outlet zone 502 is connected to the sedimentation tank system 6. The flocculation reaction zone 501 is connected to multiple mud discharge branch pipes 503, and the mud discharge branch pipes 503 are collectively connected to the mud discharge main pipe 504.

[0025] The sedimentation tank system 6 includes a front sedimentation area 601 and multiple inclined tube sedimentation areas 602. An inclined tube 603 is provided in the inclined tube sedimentation area 602. The front sedimentation area 601 is connected to the water outlet area 502 through a water hole. Multiple inclined tube sedimentation areas 602 are arranged side by side. A water collecting trough 605 is provided between the upper clear water areas of adjacent inclined tube sedimentation areas 602. The bottom of the inclined tube sedimentation area 602 is connected to the front sedimentation area 601, and the upper part of the inclined tube sedimentation area 602 is connected to the water collecting trough 605. Each water collecting trough 605 is connected to a main outlet channel 606. The main outlet channel 606 is connected to the V-shaped pool filtration system 7. A mud discharge pit is provided at the bottom of the main outlet channel 606, and the mud discharge pit is connected to a sedimentation tank mud discharge pipe 607.

[0026] It also includes a mud water regulating tank 10, the mud main pipe 504 and the sedimentation tank mud pipe 607 are both connected to the mud water regulating tank 10, a second mixer 1001 is provided in the mud water regulating tank 10, and the mud water regulating tank 10 is connected to a mud water outlet pipe 1002.

[0027] The V-shaped pool filtration system 7 includes an inlet channel 701 and multiple single-cell V-shaped filter tanks 702. The inlet channel 701 is connected to the main outlet channel 606. The multiple single-cell V-shaped filter tanks 702 are arranged side by side. The upper part of the single-cell V-shaped filter tank 702 is connected to the inlet channel 701. The bottom of the single-cell V-shaped filter tank 702 is connected to an outlet branch pipe 703, and each outlet branch pipe 703 is connected to the V-shaped pool outlet pipe 706.

[0028] A plurality of backwash branch pipes 804 are connected to the backwash pipe 803 , and each backwash branch pipe 804 is connected to the bottom of each single-cell V-shaped filter tank 702 in a one-to-one correspondence.

[0029] The backwash water regulating tank 9 and the sludge water regulating tank 10 are respectively located on both sides of the sedimentation tank system 6 .

[0030] The backwash water regulating tank 9 and the sludge water regulating tank 10 are respectively located on both sides of the sedimentation tank system 6 .

[0031] The main water inlet pipe 1 is connected to the bottom of the grid pretreatment system 2. The grid pretreatment system 2 includes three channels arranged in parallel, namely, channel I 201, channel II 202 and channel III 203.

[0032] The raw water enters the grid pretreatment system 2 from the main water inlet pipe 1, and after being pretreated through three channels, it enters the I-level mixing tank 401 and the II-level mixing tank 402 in sequence through the connecting pipe 3, and then enters the flocculation reaction area 501. After flocculation reaction, it enters the water outlet area 502, and then enters the pre-sedimentation area 601. The water overflows and enters the inclined tube sedimentation area 602 for sedimentation. After sedimentation, the clean water flows into the water collection tank 605, and then converges to the main outlet channel 606 and enters the water inlet channel 701. Usually, the second valve 707 and the third valve 802 are closed, the first valve 704 is opened, and the water in the water inlet channel 701 is distributed to each single-grid V-type filter tank 702. After filtration, it converges to the V-type tank outlet pipe 706 through the outlet branch pipe 703, enters the backwash tank 8, and is discharged through the main outlet pipe 11 and sent to the water plant clean water tank.

[0033] When it is necessary to clean the single-cell V-type filter 702, close the first valve 704 and open the second valve 707 and the third valve 802. The water in the backwash tank 8 enters each single-cell V-type filter 702 through the backwash pipe 803 and the backwash branch pipe 804, and the single-cell V-type filter 702 is backwashed. The wastewater after backwashing flows to the backwash water regulating tank 9 through the outlet branch pipe 703 and the V-type tank outlet pipe 706, and is sent to the main water inlet pipe 1 by the reflux pump 902 after regulation, and enters the water treatment process again.

[0034] The sludge water of the flocculation tank system 5 is discharged to the sludge water regulating tank 10 through the sludge discharge branch pipe 503 and the sludge discharge main pipe 504, and the sludge water of the sedimentation tank system 6 is discharged to the sludge water regulating tank 10 through the sedimentation tank sludge discharge pipe 607. After adjustment, the water is discharged from the sludge water outlet pipe 1002 and sent to the sludge dewatering room.

[0035] Embodiment 1,

[0036] The inlet conditions are as follows: potassium permanganate index is 4.0~6.0 mg / L, chemical oxygen demand (COD) is 15.0~20.0 mg / L, ammonia nitrogen (NH3-N) is 0.5~1.0 mg / L, and total nitrogen is 0.5~1.0 mg / L.

[0037] After being treated by the utility model, the water quality indicators of the effluent are as follows: turbidity is less than 0.7NTU, chromaticity is less than 15 degrees, no odor or taste, total dissolved solids are less than 1000mg / L, potassium permanganate index is less than 3mg / L, and ammonia nitrogen is less than 0.45mg / L. The effluent indicators meet the requirements of the "Sanitary Standard for Drinking Water" (GB5749-2022).

[0038] Embodiment 2,

[0039] The inlet conditions are as follows: chemical oxygen demand (COD) concentration is 60.0~100.0 mg / L, biochemical oxygen demand (BOD5) concentration is 20.0~30.0 mg / L, suspended solids (SS) concentration is 30.0~50.0 mg / L, total nitrogen (TN) concentration is 15.0~20.0 mg / L, ammonia nitrogen concentration is 8.0~15.0 mg / L, total phosphorus (TP) concentration is 1.0~1.5 mg / L, and chromaticity is 30.0~40.0 degrees.

[0040] After being treated by the utility model, the effluent water quality indicators are as follows: chemical oxygen demand (COD) effluent concentration is lower than 26.5 mg / L, biochemical oxygen demand (BOD5) effluent concentration is lower than 5.5 mg / L, total nitrogen (TN) effluent concentration is lower than 1.45 mg / L, ammonia nitrogen effluent concentration is lower than 1.45 mg / L, and total phosphorus (TP) effluent concentration is lower than 0.35 mg / L. The effluent indicators meet the requirements of Class IV water quality in the surface water environmental quality standard (GB 3838-2002).

[0041] The utility model can simplify the complex design process, the process should be flexible, can adapt to certain changes in water quality and water volume, greatly shorten the working cycle, reduce the design cost, simplify the operation and management, and improve the water treatment efficiency. The utility model is applied to the standardization and integration of the design drawings of deep treatment of water supply projects and small and medium-sized sewage projects. It has significant advantages in small towns and small and medium-sized water plants, and plays an important role in improving the work efficiency of the water supply industry.

Claims

1. A standard integrated system for water treatment, characterized in that: The invention comprises a grid pretreatment system (2), a mixing system (4), a flocculation tank system (5), a sedimentation tank system (6) and a V-shaped tank filtration system (7) which are connected in sequence. The grid pretreatment system (2) is connected to a main water inlet pipe (1). The water outlet end of the V-shaped tank filtration system (7) is connected to a backwash tank (8) via a V-shaped tank outlet pipe (706). The V-shaped tank outlet pipe (706) is also connected to a backwash water regulating tank (9). A first valve (704) is provided at one end of the V-shaped tank outlet pipe (706) close to the backwash tank (8). A second valve (707) is provided at one end of the V-shaped tank outlet pipe (706) close to the backwash water regulating tank (9). The backwash tank (8) is connected to the V-shaped tank filtration system (7) via a backwash pipe (803). A backwash water pump (801) and a third valve (802) are provided at one end of the backwash pipe (803) close to the backwash tank (8). The backwash tank (8) is connected to a main water outlet pipe (11).

2. A standard integrated system for water treatment according to claim 1, characterized in that: The backwash water regulating tank (9) is connected to the main water inlet pipe (1) via a return pipe (903).

3. A standardized integrated system for water treatment according to claim 1 or 2, characterized in that: The grid pretreatment system (2) and the mixing system (4) are connected via a connecting pipe (3).

4. A standardized integrated system for water treatment according to claim 3, characterized in that: The mixing system (4) comprises a first-stage mixing tank (401) and a second-stage mixing tank (402) which are connected in series with each other. The first-stage mixing tank (401) is connected to a connecting pipe (3), and the second-stage mixing tank (402) is connected to a flocculation tank system (5).

5. A standardized integrated system for water treatment according to claim 4, characterized in that: The flocculation tank system (5) comprises a flocculation reaction zone (501) and a water outlet zone (502); the flocculation reaction zone (501) is connected to the Class II mixing tank (402) via a water hole; the water outlet zone (502) is connected to the sedimentation tank system (6); the flocculation reaction zone (501) is connected to a plurality of mud discharge branch pipes (503); and the mud discharge branch pipes (503) are collectively connected to a mud discharge main pipe (504).

6. A standardized integrated system for water treatment according to claim 5, characterized in that: The sedimentation tank system (6) comprises a front sedimentation area (601) and a plurality of inclined tube sedimentation areas (602); the front sedimentation area (601) is connected to the water outlet area (502) via a water hole; the plurality of inclined tube sedimentation areas (602) are arranged side by side; a water collecting trough (605) is provided between adjacent inclined tube sedimentation areas (602); the bottom of the inclined tube sedimentation area (602) is connected to the front sedimentation area (601); the upper part of the inclined tube sedimentation area (602) is connected to the water collecting trough (605); the water collecting troughs (605) are collectively connected to a main water outlet channel (606); the main water outlet channel (606) is connected to a V-shaped tank filtration system (7); and the main water outlet channel (606) is connected to a sedimentation tank mud discharge pipe (607).

7. A standardized integrated system for water treatment according to claim 6, characterized in that: It also comprises a mud discharge water regulating pool (10), wherein the mud discharge main pipe (504) and the sedimentation tank mud discharge pipe (607) are both connected to the mud discharge water regulating pool (10), and the mud discharge water regulating pool (10) is connected to a mud discharge water outlet pipe (1002).

8. A standardized integrated system for water treatment according to claim 7, characterized in that: The V-shaped pool filtration system (7) comprises an inlet channel (701) and a plurality of single-cell V-shaped filter tanks (702); the inlet channel (701) is connected to a main outlet channel (606); the plurality of single-cell V-shaped filter tanks (702) are arranged side by side; the upper portion of the single-cell V-shaped filter tanks (702) is connected to the inlet channel (701); the bottom of the single-cell V-shaped filter tanks (702) is connected to an outlet branch pipe (703); and the outlet branch pipes (703) are collectively connected to the V-shaped pool outlet pipe (706).

9. A standardized integrated system for water treatment according to claim 8, characterized in that: The backwash pipe (803) is connected to a plurality of backwash branch pipes (804), and each backwash branch pipe (804) is connected to each single-cell V-shaped filter tank (702) in a one-to-one correspondence.

10. A standardized integrated system for water treatment according to claim 9, characterized in that: The backwash water regulating tank (9) and the sludge water regulating tank (10) are respectively located on both sides of the sedimentation tank system (6).

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