CN201525782U - Sewage treatment unit integrating coagulation and air flotation - Google Patents
Sewage treatment unit integrating coagulation and air flotation Download PDFInfo
- Publication number
- CN201525782U CN201525782U CN2009201986489U CN200920198648U CN201525782U CN 201525782 U CN201525782 U CN 201525782U CN 2009201986489 U CN2009201986489 U CN 2009201986489U CN 200920198648 U CN200920198648 U CN 200920198648U CN 201525782 U CN201525782 U CN 201525782U
- Authority
- CN
- China
- Prior art keywords
- air
- coagulation
- section
- cross
- sectional area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a sewage treatment unit integrating coagulation and air flotation. The sewage treatment unit comprises four parts, namely a pipeline mixer, a gas dissolving device, an expansion section stay coagulation region and an attenuation section air flotation region. Sewage directly enters a settling pond after passing though the sewage treatment unit, thus achieving the purpose of solid-liquid separation. The sewage treatment unit has the characteristics of simple equipment, small occupied area, low energy consumption, easy control, high air flotation efficiency and the like, and is especially suitable for treatment of sewage with smaller flow rate.
Description
Technical field
The utility model relates to a kind of waste disposal plant, specifically is meant the waste disposal plant of a kind of coagulation, air supporting unification.
Background technology
The air supporting method is one of current new in the world water treatment method, and it can be used for the inapplicable sewage disposal occasion of the precipitator method, approaches water and is difficult to sedimentary suspended substance to separate proportion, and for example grease, fiber, algae etc. also can be in order to concentrate active sludge.Its principle of work is under pressure condition, and a large amount of air are soluble in water, forms dissolved air water, as working medium, by dissolved air release sudden pressure reduction snap-out release, produces a large amount of microbubbles.Condensation product in microbubble and the coagulating sewage adheres to each other, and flco proportion is bubbled through the water column less than water, thereby pollutent is separated from water, reaches the water purifying purpose.In addition, in order to improve daf efficiency, often in conjunction with coagulating agent colloidal solid is formed in the air supporting method and be flco, flco has network structure, easy voids, thus improve daf efficiency.
At present, the common method that produces microbubble in the air supporting method is the pressure air-dissolving air-float method, and it produces microbubble principle of work is that air pressurized is dissolved in the water and reached capacity, and the decompression of dissolved air water stream disengages microbubble when entering air flotation pool, claim the pressure air-dissolving air-float method, also claim the pressure air-dissolving method.
Traditional pressure air-dissolving air-float method the sewage disposal working process be: rely on water pump that the part of the water purifying after air supporting is handled is refluxed to pressurize and enter dissolving, by the pressure of air compressor machine or the suction on water sprayer or the water pump water absorption tube air is pressed into molten gas simultaneously, air dissolves in the water under certain pressure condition, by dissolved air release the dissolved air water pressure recovery is arrived normal pressure then, the a large amount of microbubbles that disengage will adhere to the wadding grain in the sewage, and the wadding grain is removed.
There is the problem of three aspects in this traditional pressurized dissolved air flotation method: the first, need coagulation basin and air flotation pool simultaneously, and floor space is big; The second, the recirculation water with about 10% is as dissolved air water, and as shown in Figure 1, air-dissolving apparatus needs the pressure of 5-6kg, and dissolved-air pressure is big, the energy consumption height; The 3rd, dissolved air water is reduced to normal pressure by 5-6kg pressure, and molten gas outlet pressure reduction is big, and gas release is fast, forms air pocket easily, influences daf efficiency.The 4th, just the water purifying part after air supporting is handled is back to and generates dissolved air water in the dissolving, as shown in Figure 1, enter into the dissolved air water of air flotation pool and mix easily inhomogeneous from dissolving through the sewage that coagulation basin enters air flotation pool, cause microbubble not of uniform size, and skewness makes that the network structure mesh of the flco that the regional area of sewage forms is bigger, is difficult to remove the little suspended substance of granularity.
The utility model content
The purpose of this utility model is in order to overcome the shortcoming and defect that prior art exists, and a kind of floor space is little, energy consumption is low, daf efficiency is good and provide, the good coagulation of sewage purification ability, the waste disposal plant of air supporting unification.
For achieving the above object, the technical solution of the utility model is to include the mixing duct mixing tank that is used for sewage and coagulating agent, and air-dissolving apparatus, settling tank, it is characterized in that: described air-dissolving apparatus is connected in the exit end of line mixer, the exit end of this air-dissolving apparatus is connected with the coagulation air-float device, described coagulation air-float device exit end is connected in settling tank, described coagulation air-float device includes subtracting the cross section air flotation zone and expanding the cross section of being communicated with up and down and stops the coagulation district, described coagulation air-float device is provided with liquid-inlet pipe with respect to the below of expanding stop coagulation district, cross section, the fluid inlet of this liquid-inlet pipe is the fluid inlet of coagulation air-float device, and be provided with dissolved air release in this liquid-inlet pipe, the sectional area that described expansion cross section stops the coagulation district is big than the sectional area of liquid-inlet pipe, and the sectional area that the described sectional area that subtracts the cross section air flotation zone expands stop coagulation district, cross section is little.
The utility model mixes all sewage and coagulating agent, and enters in the air-dissolving apparatus, generate dissolved air water, then, dissolved air water enters into the coagulation air-float device, the dissolved air release exit pressure drop is less relatively, and the microbubble of generation is little, even, is easy to control; Condensation product in the coagulation air-float device in microbubble and the coagulating sewage adheres to each other, and flco proportion is bubbled through the water column less than water, and pollutent is separated from water, reaches the water purifying purpose.The sectional area that expands stop coagulation district, cross section in the coagulation air-float device is relatively large, the speed that the liquid stream of dissolved air water rises is slack-off, liquid is in this stop, exchange, and the time forms flco to make in coagulating agent in the dissolved air water and the sewage suspended particle have more fully, forms good coagulation effect; Subtract cross section air flotation zone sectional area in the coagulation air-float device and diminish, it is big that unit surface microbubble density becomes, and the reticulated structure mesh of flco diminishes, and can take away littler condensation product, thereby improve daf efficiency.
The used air-dissolving apparatus of the utility model can be force (forcing) pump, dissolving and air compressor etc., and described line mixer is to have whipping appts and pipeline difference opening sewage import and coagulating agent import.These devices are the sewage treatment area common device, and all there is sale the market.
Further be provided with is that to stop the coagulation district be that sectional area is provided with to increasing gradually upward with respect to the linkage section of liquid-inlet pipe in described expansion cross section.This liquid stream that is arranged so that dissolved air water rises more evenly slowly, and liquid makes that in this stop, exchange coagulating agent and the colloidal solid in the dissolved air water has time formation flco more fully, forms good coagulation effect.
Further being provided with is that the described cross section air flotation zone that subtracts is that sectional area is provided with to reducing gradually upward with respect to the linkage section that the expansion cross section stops the coagulation district, and unit surface microbubble density becomes greatly, and the mesh of flco network structure diminishes more even, and air flotation effect is better.
Further being provided with is that described dissolved air release is a shower nozzle.
Advantage of the present utility model is:
(1) the utility model unites two into one coagulation basin and air flotation pool, and equipment is simple, floor space is little.
(2) energy consumption is low, and is energy-conservation: as dissolved air water, air-dissolving apparatus needs the pressure of 5-6kg to the conventional press dissolved air flotation device, the energy consumption height with about 10% recirculation water.As dissolved air water, according to Henry's law (at a certain temperature, the equilibrium pressure of this gas is directly proportional on the concentration of certain gas in solution and the liquid level), air-dissolving apparatus only need be no more than the pressure of 1kg to the utility model with all sewage, and energy consumption is low.
(3) easy to control, the daf efficiency height: conventional press dissolved air flotation device backflow dissolved air water mixes mutually with coagulation sewage, mixes even inadequately.Dissolved air release exit pressure drop big (dissolved air water pressure is 5-6kg) is wayward simultaneously, forms air pocket easily, influences air flotation effect.The utility model as dissolved air water, and coagulates all sewage Air-float separator and is provided with and expands the cross section and stop the coagulation district and subtract the cross section air flotation zone, dissolved air release exit pressure drop little (dissolved air water pressure is no more than 1kg), and gas release is even, control easily, air flotation effect height.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 conventional press air-dissolving air-float treatment unit structural representation;
The waste disposal plant structural representation of Fig. 2 the utility model coagulation, air supporting unification;
Embodiment
Below by embodiment the utility model is carried out concrete description; only be used for the utility model is further specified; can not be interpreted as the qualification to the utility model protection domain, the technician in this field can make some nonessential improvement and adjustment to the utility model according to the content of above-mentioned utility model.
Embodiment of the present utility model as shown in Figure 2, include line mixer 1, air-dissolving apparatus 2, settling tank 4, described line mixer 1 is for to have whipping appts and pipeline that have sewage import and coagulating agent import, described air-dissolving apparatus 2 is connected in the exit end of line mixer 1, the exit end of this air-dissolving apparatus 2 is connected with coagulation air-float device 3, described coagulation air-float device 3 exit end are connected in settling tank 4, described coagulation air-float device 3 includes subtracting cross section air flotation zone 33 and expanding the cross section of being communicated with up and down and stops coagulation district 32, described coagulation air-float device 3 is provided with liquid-inlet pipe 31 with respect to the below of expanding stop coagulation district, cross section 32, the fluid inlet 311 of this liquid-inlet pipe 31 is the fluid inlet of coagulation air-float device 3, and be provided with dissolved air release 312 in this liquid-inlet pipe 31, the sectional area that described expansion cross section stops coagulation district 32 is big than the sectional area of liquid-inlet pipe 31, and the sectional area that the described sectional area that subtracts cross section air flotation zone 33 expands stop coagulation district, cross section 32 is little.
Working process of the present utility model is, sewage is pumped from sewage lagoon, add coagulating agent by line mixer 1, pass through air-dissolving apparatus 2 (pressure is no more than 1kg) and air mixed again, form dissolved air water through dissolved air release 311 ejections, the process that sewage rises stops coagulation district 32 through the expansion cross section of coagulation air-float device 3, liquid stops, exchanges, enter one then and subtract cross section air flotation zone 33, with suspended substance in the sewage with through contact with microbubble formation scum silica frost and floating of the throw out that the dispensing effect produces.Sewage enters settling tank 4 backs at last and realizes solid-liquid separation, and clear water is discharged, and scum silica frost is discharged by skim gate 5, and so circulation is disposed of sewage, the routine configuration that this skim gate 5 is a settling tank 4.
The cross section that the used expansion cross section of the utility model stops coagulation district 32, subtract cross section air flotation zone 33 can be circular, oval, rectangle or Polygons etc.
In order to make the liquid stream of dissolved air water rise more evenly slowly, make that the width of mesh of flco network structure is more even, air flotation effect is better, and stop coagulation district 32, the described expansion of present embodiment cross section is that sectional area is provided with to increasing gradually upward with respect to the linkage section of liquid-inlet pipe 31.Described to subtract cross section air flotation zone 33 with respect to the linkage section that expands coagulation district, cross section 32 be that sectional area is provided with to reducing gradually upward, so unit surface microbubble density becomes big, and the mesh of flco network structure diminishes more even, and air flotation effect is better.
Claims (4)
1. coagulation, the waste disposal plant of air supporting unification, include the mixing duct mixing tank that is used for sewage and coagulating agent, and air-dissolving apparatus, settling tank, it is characterized in that: described air-dissolving apparatus is connected in the exit end of line mixer, the exit end of this air-dissolving apparatus is connected with the coagulation air-float device, described coagulation air-float device exit end is connected in settling tank, described coagulation air-float device includes subtracting the cross section air flotation zone and expanding the cross section of being communicated with up and down and stops the coagulation district, described coagulation air-float device is provided with liquid-inlet pipe with respect to the below of expanding stop coagulation district, cross section, the fluid inlet of this liquid-inlet pipe is the fluid inlet of coagulation air-float device, and be provided with dissolved air release in this liquid-inlet pipe, the sectional area that described expansion cross section stops the coagulation district is big than the sectional area of liquid-inlet pipe, and the sectional area that the described sectional area that subtracts the cross section air flotation zone expands stop coagulation district, cross section is little.
2. the waste disposal plant of coagulation according to claim 1, air supporting unification is characterized in that: stop coagulation district, described expansion cross section is that sectional area is provided with to increasing gradually upward with respect to the linkage section of liquid-inlet pipe.
3. the waste disposal plant of coagulation according to claim 1 and 2, air supporting unification is characterized in that: the described cross section air flotation zone that subtracts is that sectional area is provided with to reducing gradually upward with respect to the linkage section that the expansion cross section stops the coagulation district.
4. the waste disposal plant of coagulation according to claim 3, air supporting unification, it is characterized in that: described dissolved air release is a shower nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201986489U CN201525782U (en) | 2009-10-29 | 2009-10-29 | Sewage treatment unit integrating coagulation and air flotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201986489U CN201525782U (en) | 2009-10-29 | 2009-10-29 | Sewage treatment unit integrating coagulation and air flotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201525782U true CN201525782U (en) | 2010-07-14 |
Family
ID=42517075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201986489U Expired - Lifetime CN201525782U (en) | 2009-10-29 | 2009-10-29 | Sewage treatment unit integrating coagulation and air flotation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201525782U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826623A (en) * | 2012-09-21 | 2012-12-19 | 中国石油化工股份有限公司 | Air floating device |
| CN102951714A (en) * | 2012-12-03 | 2013-03-06 | 杭州太一化工科技有限公司 | Gas dissolving floatation machine |
| CN107758935A (en) * | 2017-12-06 | 2018-03-06 | 张斐斐 | A kind of apparatus for treating sewage for paper making equipment |
-
2009
- 2009-10-29 CN CN2009201986489U patent/CN201525782U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826623A (en) * | 2012-09-21 | 2012-12-19 | 中国石油化工股份有限公司 | Air floating device |
| CN102951714A (en) * | 2012-12-03 | 2013-03-06 | 杭州太一化工科技有限公司 | Gas dissolving floatation machine |
| CN107758935A (en) * | 2017-12-06 | 2018-03-06 | 张斐斐 | A kind of apparatus for treating sewage for paper making equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103936093B (en) | A kind of high-efficiency dissolved air flotation system | |
| CN203128240U (en) | Horizontal-flow dissolved air flotation machine | |
| CN103964529B (en) | A kind of mixed flow air-float process for purifying water | |
| CN101708910B (en) | Sewage disposal plant combining coagulation and air flotation | |
| CN207498173U (en) | For the water pump self-suction dissolved air flotation device of seriously polluted river water processing | |
| CN104370323B (en) | A kind of shallow air-floatation device and the method for sewage disposal | |
| CN201525782U (en) | Sewage treatment unit integrating coagulation and air flotation | |
| CN202152290U (en) | Pressurized dissolved-air floating system | |
| CN205501073U (en) | Papermaking wastewater treatment system | |
| CN207294243U (en) | A kind of dissolved gas floatator | |
| CN101575124B (en) | Rotary dissolving air flotation purifier | |
| CN108439652A (en) | A kind of high-efficiency dissolued-air air-floating apparatus and its sewage water treatment method based on waterpower principle | |
| CN205933455U (en) | Industrial waste water high -efficiency processing device | |
| CN208454677U (en) | A kind of high-efficiency dissolued-air air-floating apparatus based on waterpower principle | |
| CN208087256U (en) | A kind of efficient high tower air floatation machine | |
| CN205442699U (en) | Pressure dissolves gas airfloat equipment | |
| CN105565414A (en) | Pressure air dissolving device of air float | |
| CN204607760U (en) | A kind of new-type air-floatation mud discharging device | |
| CN207404882U (en) | A kind of no air saturator type efficient air-floating apparatus | |
| CN204342469U (en) | A kind of shallow air-floatation device | |
| CN209853875U (en) | Integrated water purifying device | |
| CN105481039A (en) | Air flotation pressure dissolved air type device | |
| CN107473440A (en) | A kind of device for improving ozone utilization rate in multistage ozone air-float technique | |
| CN209383553U (en) | Multipotency current stabilization air-floating apparatus | |
| CN207525066U (en) | A kind of repair system of water pollution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100714 Effective date of abandoning: 20091029 |