CN101011636A

CN101011636A - Highly effective reaction deep-cone settling method and apparatus

Info

Publication number: CN101011636A
Application number: CNA200610136949XA
Authority: CN
Inventors: 湛含辉; 龙小兵; 罗定提; 陆振荣; 张晶晶; 彭春徕
Original assignee: Hunan University of Technology
Current assignee: Hunan University of Technology
Priority date: 2006-12-27
Filing date: 2006-12-27
Publication date: 2007-08-08
Anticipated expiration: 2026-12-27
Also published as: CN100443139C

Abstract

The highly effective reaction deep cone settling comprises coagulation reaction by mixing the mixer and sewage into the coagulation device, with the density of the sewage 1-60g/l, mechanical blending speed 200-400r/m, forming floc suspension which goes through is generated into secondary flow, and forms on the slanting plate big grain aggregates, sliding to the deep cone density chamber through the conical slanting plate center in sedimentation reaction, and with the big grain aggregates crushed and condensed in the density chamber and exhausted with further dehydration in deep cone condensation. It combines the deep cone sedimentation, coagulation and condensation. It is mainly used for the treatment of high density fine grain sewage with mud.

Description

Highly effective reaction deep-cone settling method and device

Technical field

The present invention relates to a kind of highly effective reaction deep-cone settling method and device, especially highly effective reaction deep-cone settling method and the device that the fluid of high concentration subparticle is handled.

Background technology

Coagulant precipitation is one of sewage disposal important technology of carrying out Separation of Solid and Liquid, adopt the coagulant precipitation technology, solid particle in the sewage and medicament coagulation are decided agent reaction back and are formed floc sedimentation, thereby rapid subsidence realizes that higher concentration suspension separates fast with clear water at short notice.The coagulant precipitation technology is suitable for the suspension of low concentration.Yet along with demand of practical production, it is in need of immediate treatment a lot of high concentration sludge water to occur, because the sinking speed of high concentration fine grained mud is low, if adopting the natural subsidence method handles, because sludge water concentration is higher, the hindered falling phenomenon is serious between particle, and the volume of sedimentation basin will be very huge; If still adopt traditional coagulant precipitation technology, then dosing is very big, the processing cost height, even though can play certain Separation of Solid and Liquid effect in economic allowed band, treatment effeciency is very low, and effect is relatively poor.Therefore at present high concentration fine grained sludge water is treated as a more scabrous problem.

Present traditional precipitation apparatus both domestic and external mainly is horizontal sedimentation tank, vertical sedimentation tank, dortmund's tank, swash plate (pipe) sedimentation basin etc., though these several equipment have his own strong points, concludes and gets up to exist following defective:

1, floor space is big, and the unit volume disposal ability is little;

2, the sedimentation time long, efficient is low, the content height of effluent quality amount suspension;

3, principle is single, can only be applicable to single operation;

4, investment is big, and automaticity is low, operating difficulties, and maintenance, repair labour intensity is big;

5, operating cost height;

6, the underflow concentration of emission is low, adds to the difficulties for the subsequent treatment of underflow.

Summary of the invention

The object of the present invention is to provide a kind of principle advanced person, compact conformation, technology simple, reliable, investment and operating cost highly effective reaction deep-cone settling method and device low, applied widely are to overcome above-mentioned defective.

For achieving the above object, technical solution of the present invention is: make full use of the space of equipment, collection coagulating, sedimentation reaction, dark awl concentrate in one, finish coagulant precipitation and separate overall process, water treatment technological process is greatly simplified, and occupation area of equipment greatly reduces.

Highly effective reaction deep-cone settling method of the present invention adopts coagulant sewage wide to concentration range under mechanical agitation, that contain fine suspended particle to handle, and it is characterized in that following steps:

(1) coagulating, coagulant and sewage enter coagulation device, at concentration of wastewater 1-60 grams per liter, stir under the condition that mechanical agitation speed is 200-400 rev/min, and coagulant is contacted with suspended particulate in the sewage, form the flco suspension;

(2) sedimentation reaction contains the sewage of flco suspension, and the secondary flow-generator through lower end, coagulating chamber produces secondary stream, makes the flco suspension form the bulky grain aggregate on the conical inclination plate and slide to dark awl enriched chamber under conical inclination plate center;

(3) dark awl concentrates, and slides to the bulky grain aggregate of dark awl enriched chamber down, discharges after extrusion and collision is concentrated in the enriched chamber, carries out follow-up dehydration.

Be used for the highly effective reaction deep-cone settling device of the inventive method, comprise coagulation reaction device, sedimentation device and enrichment facility, it is characterized in that:

A, described coagulation reaction device comprise sewage water inlet pipe 1, chemical feed pipe 2, dividing plate 5 and shell 16, be provided with cylinder 7 in this shell, be provided with the shaft 3 of band blade 4 in the cylinder, the one end links to each other with reductor 20, the other end links to each other with bearing block 21, sewage water inlet pipe 1 and chemical feed pipe 2 then are connected with cylinder 7, and cylinder 7 is separated at least two coagulating chambers 8 that interconnect by dividing plate 5;

B, described sedimentation device comprise Outer Taper 10, swash plate support 12, conical inclination plate 13 and expansion chamber 15, conical inclination plate 13 places on the swash plate support 12, support 12 is connected with Outer Taper 10, the upper end of conical inclination plate 13 is provided with expansion chamber 15, and the upper end of this expansion chamber is connected with overflow launder 17;

C, described enrichment facility comprise dark awl enriched chamber 11, concentrate discharge pipe 9, and the upper end of enriched chamber 11 is connected with hang plate 13, and the lower end is connected with concentrate discharge pipe 9.

The lower end of described coagulating chamber 8 also is provided with secondary flow-generator 14.

The exit of described dividing plate 5 also is provided with adjusting rod 6.

Advantage of the present invention is:

1) make full use of the space of equipment, collection coagulating, sedimentation reaction, dark awl concentrate in one, and the integral device compactness is greatly simplified water treatment technological process, and the floor space of equipment greatly reduces, investment and operating cost is low, operation management maintain conveniently;

2) sedimentation time short (having only traditional handicraft 1/10);

3) the water outlet suspension content is low;

4) underflow concentration of emission height (be traditional handicraft 3 times), it is easy to discharge the follow-up dehydration of back precipitum;

5) add medicament expense low (have only traditional handicraft 1/3);

6) adaptability is strong, and is stable to the wastewater treatment efficiency of the pan feeding of variable concentrations.

Description of drawings

Accompanying drawing is the structure chart of the utility model highly effective reaction deep-cone settling device.

Among the figure: 1-sewage water inlet pipe, 2-chemical feed pipe, 3-shaft, 4-stirring vane, the 5-dividing plate, 6-adjusting rod, 7-cylinder, 8-coagulating chamber, 9-concentrate discharge pipe, the 10-Outer Taper, 11-bores the enriched chamber deeply, 12-swash plate bracing frame, 13-conical inclination plate, 14-secondary flow-generator, the 15-expansion chamber, 16-shell, 17-overflow launder, the 18-electric machine support, 20-reductor, 21-bearing block.

The specific embodiment

Below in conjunction with accompanying drawing the present invention and the specific embodiment thereof are described in further detail, and provide following examples:

Example 1

Be 100 liters of the coagulant of 25mg/L such as polyacrylamides with containing granule density with concentration be that the sewage 20M3 of 1 grams per liter enters respectively in the coagulating chamber 8 of the cylinder 7 in the coagulation reaction device shell 16 through chemical feed pipe 2 and sewage water inlet pipe 1, actuating motor and reductor 20 thereof, drive shaft 3 and blade 4 rotations, regulating rotating speed is 400 rev/mins, coagulant is fully contacted with suspended particulate in the sewage, form the flco suspension; The sewage that contains this flco suspension, secondary flow-generator 14 through 8 lower ends, coagulating chamber produces secondary stream, make the flco suspension under the center that forms bulky grain aggregate and process conical inclination plate 13 on the conical inclination plate 13, slide to dark awl enriched chamber 11, the supernatant that contains subparticle enters expansion chamber 15 sedimentation once more, and overflow then enters overflow launder 17 and discharges through overflow pipe 18; Slide to the bulky grain aggregate in the dark awl enriched chamber 11 down, extrusion and collision takes place in enriched chamber 11 highly concentrated the follow-up dehydration of back discharge carrying out.Adjusting rod 6 control sewage have good coagulating effect at the flow in 8 exits, coagulating chamber to guarantee sewage and coagulant.

Example 2

With concentration be 25mg/L 500 liters of polyacrylamides with contain the sewage 200M that granule density is 30 grams per liters ³Enter respectively in the coagulating chamber 8 of cylinder 7 through chemical feed pipe 2 and sewage water inlet pipe 1, the rotating speed of shaft 3 is 300 rev/mins, and all the other are with example 1.

Example 3

With concentration be 25mg/L 2000 liters of polyacrylamides with contain the sewage 400M that granule density is 60 grams per liters ³Enter respectively in the coagulating chamber 8 of cylinder 7 through chemical feed pipe 2 and sewage water inlet pipe 1, the rotating speed of shaft 3 is 200 rev/mins, and all the other are with example 1.

Contain granule density less than 1 grams per liter or greater than the sewage of 60 grams per liters, also at the row of protection scope of the present invention.

Claims

1, a kind of highly effective reaction deep-cone settling method adopts coagulant sewage wide to concentration range under mechanical agitation, that contain fine suspended particle to handle, and it is characterized in that following steps:

(1) coagulating, coagulant and sewage enter coagulation device, contain granule density 1-60 grams per liter at sewage, stir under the condition that mechanical agitation speed is 200-400 rev/min, and coagulant is contacted with suspended particulate in the sewage, form the flco suspension;

2, a kind of highly effective reaction deep-cone settling device that is used for claim 1 method comprises coagulation reaction device, and sedimentation device and enrichment facility is characterized in that:

A, described coagulation reaction device comprise sewage water inlet pipe (1), chemical feed pipe (2), dividing plate (5) and shell (16), be provided with cylinder (7) in this shell, be provided with the shaft (3) of band blade (4) in the cylinder, the one end links to each other with reductor (20), the other end links to each other with bearing block (21), sewage water inlet pipe (1) and chemical feed pipe (2) then are connected with cylinder (7), and cylinder (7) is separated at least two coagulating chambers (8) that interconnect by dividing plate (5);

B, described sedimentation device comprise Outer Taper (10), swash plate support (12), hang plate (13) and expansion chamber (15), conical inclination plate (13) places on the swash plate support (12), support (12) is connected with Outer Taper (10), the upper end of conical inclination plate (13) is provided with expansion chamber (15), and the upper end of this expansion chamber is connected with overflow launder (17);

C, described enrichment facility comprise dark awl enriched chamber (11), concentrate discharge pipe (9), and the upper end of enriched chamber (11) is connected with conical inclination plate (13), and the lower end is connected with concentrate discharge pipe (9).

3, by the described settler of claim 2, it is characterized in that the lower end of described coagulating chamber (8) also is provided with secondary flow-generator (14).

4, by the described settler of claim 2, it is characterized in that the exit of described dividing plate (5) also is provided with adjusting rod (6).