CN202555084U

CN202555084U - Settling and filtering device for sea-water desalinating system

Info

Publication number: CN202555084U
Application number: CN201220146584XU
Authority: CN
Inventors: 孙洪波; 杨耐
Original assignee: Qinhuangdao Bandao Environmental Engineering Co Ltd
Current assignee: Qinhuangdao Bandao Environmental Engineering Co Ltd
Priority date: 2012-04-10
Filing date: 2012-04-10
Publication date: 2012-11-28
Anticipated expiration: 2022-04-10

Abstract

A settling and filtering device for a sea-water desalinating system is provided with a settling and filtering tank. A coagulation reaction tank is arranged in the front of the settling and filtering tank, an inclined tube settling tank is arranged in the rear of the settling and filtering tank, a filtering box is arranged on one side of the settling and filtering tank, the coagulation reaction tank is provided with a plurality of reaction tank units which are sequentially communicated by communicating ports, an effluent weir at the upper end of the inclined tube settling tank is connected with a water collecting tank, a filtering box water inlet pipe is arranged below the water collecting tank, the filtering box is provided with an upper clear water cavity and a lower filtering cavity, an inverted U-shaped back flushing blow-off pipe is communicated with the filtering cavity, and the top of the back flush blow-off pipe is connected with a back flush control pipe. The settling and filtering device serves as a sea-water pretreatment device for the sea-water desalinating system and integrates coagulation reaction, settling, filtering, back flushing and blow-off, coagulation reaction, sea-water filtering and filter material back flushing are automatically completed by gravity, and the settling and filtering device has the advantages of fine sea-water desalinating pretreatment effect, small occupied area and low investment and running cost.

Description

Seawater desalination system sedimentation and filtration equipment

Technical field

The utility model relates to water treatment facilities, is specifically related to a kind of seawater desalination system sedimentation and filtration equipment.

Background technology

Along with the scarcity day by day of industrial expansion and freshwater resources, desalination technology obtains attention more and more widely.At present; Reflection is passed through the embrane method desalination technology and is tending towards ripe; The key issue that restricts its industrialization popularization and application is that investment of devices and operating cost are too high, therefore, how can reduce equipment investment; Reducing operating cost, is a major issue that presses for solution in the present desalinization industry development.

Summary of the invention

The purpose of the utility model is to the problems referred to above, provide a kind of simple in structure, operation energy consumption is low, can effectively reduce the seawater desalination system sedimentation and filtration equipment of seawater desalination system equipment investment and operating cost.

The technical scheme that realizes above-mentioned purpose is: a kind of seawater desalination system sedimentation and filtration equipment, and it has a sedimentation and filtration ditch body, and the front portion of this sedimentation and filtration ditch body is provided with that coagulation reaction tank, rear portion are provided with tube settler, a sidepiece is provided with Rose Box; Described coagulation reaction tank is separated into a plurality of reaction tanks unit by the perpendicular coagulation reaction tank demarcation strip of putting, and each reaction tank unit is communicated with through the communication port that is arranged on the coagulation reaction tank demarcation strip successively, and the water inlet of this coagulation reaction tank is connected with the seawater water inlet pipe; The water inlet of said tube settler is connected with the delivery port of said coagulation reaction tank, and the effluent weir of this tube settler upper end links to each other with a water leg; Be provided with in the described Rose Box and this Rose Box is separated into one places the clear water chamber and on top to place the diaphragm plate of the filter chamber of bottom; Be connected said water leg below have the bottom to take the shape of the letter U the Rose Box water inlet pipe; The delivery port of this Rose Box water inlet pipe places the position of leaning on top in the filter chamber; In the filter chamber of Rose Box, be provided with the screen pipe group of forming by water outlet vertical tube and the horizontal screen casing that is connected this water outlet vertical tube lower end and filter filtrate; The delivery port of its screen pipe group places in the clear water chamber of Rose Box, and this clear water chamber is connected with horizontal clear water outlet pipe; An end that is the recoil blow-off pipe of being inverted U-shaped connects the filter chamber of said Rose Box, and the other end is connected to blowdown tank; Top at the recoil blow-off pipe is connected with the recoil control valve, and the other end of this recoil control valve stretches in the clear water chamber of Rose Box; Bottom at said coagulation reaction tank and said tube settler is respectively arranged with discharge pipeline.

The bottom of said tube settler is provided with the strong washing pipe of spoil disposal.

Described filtration filtrate is a sea sand.

The utility model is as the sea water preprocessing equipment of seawater desalination system, collection coagulating, deposition, collection mud, spoil disposal, catchment, water distribution, filtration, backwash, blowdown be one.Can multiple devices be made up, to satisfy the extensive requirement of handling the water yield.Seawater mixes the unpowered mode of streaming that adopts with medicament; The recoil of filtrate is cleaned the filtration of leaning on self and is produced water, need not to set up the recoil water pump; The recoil of the coagulating of equipment, sea water filter, filtrate is cleaned and is all accomplished no energy consumption by gravity automatically.

The utility model is used for the reverse osmosis membrane seawater desalination system and removes impurity, reduction turbidity in the seawater, and the pretreating effect of its desalinization is good, and occupation area of equipment is few, and equipment investment and operating cost are low.

Description of drawings

Fig. 1 is this seawater desalination system sedimentation and filtration equipment schematic top plan view;

Fig. 2 is the A-A generalized section of Fig. 1.

The specific embodiment

Describe in conjunction with the specific embodiment of accompanying drawing the utility model.

Like accompanying drawing, this seawater desalination system sedimentation and filtration equipment has a sedimentation and filtration ditch body 1, and this sedimentation and filtration ditch body can adopt the Reinforced Concrete Materials moulding, or is made up of steel structure framework built-in anti-corrosion material.The front portion of sedimentation and filtration ditch body 1 is provided with that coagulation reaction tank 2, rear portion are provided with tube settler 3, a sidepiece is provided with Rose Box 4.Coagulation reaction tank 2, tube settler 3 and Rose Box 4 size of shared sedimentation and filtration ditch body bulk are respectively confirmed according to designing requirement.Rose Box 4 can be provided with a plurality of, is arranged in a side of sedimentation and filtration ditch body 1.Coagulation reaction tank 2 is separated into a plurality of reaction tanks unit by the perpendicular demarcation strip of putting in reaction tank 5, and each reaction tank unit connects through the communication port that is arranged on the coagulation reaction tank demarcation strip 5 successively.Straggly the offering of communication port on each coagulation reaction tank demarcation strip 5 height is beneficial to current and in each reaction tank unit, forms and stream, and strengthens the coagulation effect of flocculate medicament and seawater.The water inlet of first reaction tank unit of coagulation reaction tank 2 is connected with seawater water inlet pipe 6, and the delivery port of last reaction tank unit of coagulation reaction tank 2 is connected with the water inlet of tube settler 3.Like accompanying drawing embodiment, the effluent weir 7 of tube settler 3 upper ends can be provided with a plurality of, and an end of each effluent weir 7 links to each other with a water leg 8, will be pooled in the water leg 8 through the seawater that the tube settler post precipitation enters into effluent weir 7.In Rose Box 4, be provided with a diaphragm plate 16, this diaphragm plate 16 places the clear water chamber and on top to place the filter chamber of bottom with being separated into one in the Rose Box 4.The Rose Box water inlet pipe 9 that the bottom takes the shape of the letter U be connected water leg 8 below; The water inlet of this Rose Box water inlet pipe 9 is communicated with water leg 8; The delivery port of this Rose Box water inlet pipe 9 places the interior position of leaning on top of the filter chamber of Rose Box 4; In the filter chamber of Rose Box 4, be provided with the screen pipe group of forming by water outlet vertical tube and the horizontal screen casing that is connected this water outlet vertical tube lower end 17 and filter filtrate 18; The delivery port of its screen pipe group 17 is communicated with the clear water chamber of Rose Box 4, and the clear water chamber of Rose Box 4 connects clear water outlet pipe 10.An end that is the recoil blow-off pipe 11 of being inverted U-shaped connects the filter chamber of Rose Box 4, and the other end connects blowdown tank 12.The top of recoil blow-off pipe 11 connects recoil control valve 13, and the other end of this recoil control valve 13 stretches in the clear water chamber of Rose Box 4.Be arranged to bore the bucket shape shape at the bottom of the pond of coagulation reaction tank 2 and tube settler 3, constitute the sludge hopper of precipitating sludge, this sludge hopper can be provided with a plurality of according to the big or small vertical, horizontal arrangement of pond bulk area.The bottom of each sludge hopper is respectively arranged with discharge pipeline 14.The bottom of tube settler 3 is provided with the strong washing pipe 15 of spoil disposal, and the water inlet of the strong washing pipe 15 of this spoil disposal is connected with strong bath carrier pipe, and the delivery port of the strong washing pipe 15 of spoil disposal places the bottom in the sludge hopper.

The filtration filtrate 18 of the utility model adopts the medium that intensity is good, pollutant holding capability is high, can select sea sand for use, takes conveniently, and use cost is low, can satisfy job requirement.

During the utility model work; Flocculation medicament and bactericidal agent and seawater get into coagulation reaction tank 2 by seawater water inlet pipe 6; Seawater and medicament carry out sufficient hybrid reaction in the process of each reaction tank unit of flowing through; Granule foreign that seawater dashes and fine suspension are gathered into bigger floccule body, and the relatively large floccule body of a part of gravity precipitates in coagulation reaction tank 2, and another part gets into current and further accomplishes deposition in the tube settler 3.Be deposited to coagulation reaction tank 2 and regularly discharge through discharge pipeline 14, do not arrange for a long time or when hardening phenomenon, can carry out by force towards spoil disposal through the strong washing pipe 15 of spoil disposal like mud with the mud in the tube settler 3 bottom sludge hoppers.The seawater rising of in tube settler 3, accomplishing the floccule body deposition flow into water leg 8 through effluent weir 7, and in the filter chamber of Rose Box water inlet pipe 9 entering Rose Boxes 4, accomplishes filtration through filtering filtrate 18, further reduces the turbidity of seawater.The seawater clear water that reduces turbidity enters into through screen pipe group 17 in the clear water chamber of Rose Box 4, is flowed out by clear water outlet pipe 10, accomplishes the sea water preprocessing of desalting process.In this equipment running process; Passing in time; The resistance that filters 18 pairs of seawater of filtrate increases gradually, and the water level in Rose Box 4 filter chambers also rises gradually, when water level in the filter chamber rises to the peak of recoil blow-off pipe 11; Water in the recoil blow-off pipe 11 can flow to rapidly in the blowdown tank 12 and through sewage draining exit and flow out; Because the speed and the gravity of current can produce negative pressure in the filter chamber of Rose Box 4, make the clear water in the Rose Box 4 clear water chambeies pass through to filter filtrate 18 through screen pipe group 17 reverse flow, realize the recoil of filtering filtrate 18 is cleaned.The sewage that recoil is cleaned gets into blowdown tank 12 through recoil blow-off pipe 11 and is flowed out by sewage draining exit.Clean in the running in above-mentioned recoil; Water level in the Rose Box 4 clear water chambeies can descend; When water level in the clear water chamber drops to the lower nozzle that is lower than recoil control valve 13; Negative pressure in the recoil blow-off pipe 11 is disappeared, and recoil is cleaned operation and is stopped, and equipment changes normal seawater sedimentation and filtration operation again over to.

The entire work process of the utility model is accomplished by gravity, and the peak that the pressure head that only need intake is higher than this equipment gets final product.

Claims

1. seawater desalination system sedimentation and filtration equipment; It is characterized in that: it has a sedimentation and filtration ditch body (1), and the front portion of this sedimentation and filtration ditch body (1) is provided with that coagulation reaction tank (2), rear portion are provided with tube settler (3), a sidepiece is provided with Rose Box (4); Described coagulation reaction tank (2) is separated into a plurality of reaction tanks unit by the perpendicular coagulation reaction tank demarcation strip of putting (5); Each reaction tank unit is communicated with through the communication port that is arranged on the coagulation reaction tank demarcation strip (5) successively, and the water inlet of this coagulation reaction tank (2) is connected with seawater water inlet pipe (6); The water inlet of said tube settler (3) is connected with the delivery port of said coagulation reaction tank (2), and the effluent weir (7) of this tube settler (3) upper end links to each other with a water leg (8); Be provided with in the described Rose Box (4) and this Rose Box (4) is separated into one places the clear water chamber and on top to place the diaphragm plate (16) of the filter chamber of bottom; Be connected said water leg (8) below have the bottom to take the shape of the letter U Rose Box water inlet pipe (9); The delivery port of this Rose Box water inlet pipe (9) places the position of leaning on top in the filter chamber; In the filter chamber of Rose Box (4), be provided with the screen pipe group of forming by water outlet vertical tube and the horizontal screen casing that is connected this water outlet vertical tube lower end (17) and filter filtrate (18); The delivery port of its screen pipe group (17) places in the clear water chamber of Rose Box (4), and this clear water chamber is connected with horizontal clear water outlet pipe (10); An end that is the recoil blow-off pipe (11) of being inverted U-shaped connects the filter chamber of said Rose Box (4), and the other end is connected to blowdown tank (12); Be connected with recoil control valve (13) at the top of recoil blow-off pipe (11), the other end of this recoil control valve (13) stretches in the clear water chamber of Rose Box (4); Bottom at said coagulation reaction tank (2) and tube settler (3) is respectively arranged with discharge pipeline (14).

2. seawater desalination system sedimentation and filtration equipment according to claim 1 is characterized in that: the bottom of said tube settler (3) is provided with the strong washing pipe of spoil disposal (15).

3. seawater desalination system sedimentation and filtration equipment according to claim 1 is characterized in that: described filtration filtrate (18) is a sea sand.