CN1397503A - Countercurrent, copolymerizing and air-float process for purifying water and its equipment - Google Patents
Countercurrent, copolymerizing and air-float process for purifying water and its equipment Download PDFInfo
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- CN1397503A CN1397503A CN 01120638 CN01120638A CN1397503A CN 1397503 A CN1397503 A CN 1397503A CN 01120638 CN01120638 CN 01120638 CN 01120638 A CN01120638 A CN 01120638A CN 1397503 A CN1397503 A CN 1397503A
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Abstract
A process for cleaning water includes mixing the flocculant with the water to be treated in water inlet pump, flocculating and reaction between air bubbles and floc in countercurrent copolymerizing reactor, flowing the water downward and the air upward, discharging the resultant water from bottom of reactor, and discharging dregs from top of reactor.
Description
Technical field
The invention belongs to water-treatment technology field, specifically, relate to a kind of countercurrent, copolymerizing and air-float process for purifying water and device.
Background technology
Air-dissolving air-float is used for starting from the sixties to water treatment as a kind of technology of particulate separation efficiently, development through many decades, be widely used at present the processing of low temperature, low turbid rich algae water, it is higher than traditional precipitate and separate better effects if, load, and is more economic preconditioning technique for the particulate filter filtration process.Along with going deep into of research, the workers that are engaged in water treatment recognize that further air-dissolving air-float is a kind of more advanced technology at present, it not only has higher removal efficient to water-borne glue body material, and can reach removal efficient more than 80% to humic-acid kind natural organic matter, algae cause of disease material etc.The flco optimum size that contacts with microbubble in the dissolved air flotation process should be in micro scale, the intensity of flco should be able to anti-certain flow shear, therefore require the preceding flocculation time of air-dissolving air-float can be reduced to 2.5-5 minute even lower, Xiang Yingyou flocculation hydraulics G value is in 40-100s
-1Even it is higher.
Copolymerizing and air-float is flocculation and the integrated water technology of air supporting section, the purport of copolymerizing and air-float water treatment is to make microbubble to participate in the cohesion of the pollutents such as colloidal solid, organism in flocculation agent and the water and the flocculation process of micro-floccule, make full use of the contact medium effect of microbubble, make microbubble, micro-floccule in suitable reactor, carry out contact flocculation, it is one that the homophase of particulate matter and out-phase contact flocculation process are melted two, the final interpolymer that is fit to isolating bubble-flco that forms.Strengthening copolymerizing and air-float is the interaction that utilizes metal, organism and microorganism on the particulate matter interface, adopt corresponding means to strengthen above-mentioned polymerization process, improve the removal of dissolved air flotation process on the one hand, improve the removal of dissolved air flotation process on the other hand underwater gold genus, organism, algae and eutrophication material to the colloidal solid material in the water.
Traditional air-float water treatment process is first with flocculation agent (generally adopting Tai-Ace S 150) and pending water thorough mixing, adopts the mode of following current to make pending water and dissolved air water carry out flocculation reaction then, to reach the purpose of water treatment.This traditional water technology time is long, need simultaneously to be provided with to mix and the flocculation unit, so floor space is big, and the expense of equipment is also high.
Summary of the invention
The object of the present invention is to provide a kind of countercurrent, copolymerizing and air-float process for purifying water and device, can shorten the time of water treatment procedure, reduce the floor space and the capital cost of water processing establishment.
For achieving the above object, a kind of countercurrent, copolymerizing and air-float process for purifying water provided by the invention is:
Flocculation agent is thrown in the water sucking mouth of pending water intake pump, flocculation agent is mixed in water pump with pending water;
Mixed pending water is opposite with the flow direction of dissolved air water in the countercurrent, copolymerizing reactor.
Be used to realize above-mentioned purpose countercurrent, copolymerizing and air-float purifier, mainly include:
A countercurrent, copolymerizing and air-float reactor is a column tank container, and the upper end of its inside is provided with a pending water water-in, and pending water is inflow reactor from up to down; The lower end is provided with a dissolved air release, the bottom-up inflow reactor of dissolved air water; The top is provided with a dreg collecting slot, collects the scum silica frost that reaction produces; The bottom is provided with treating water outlet, and the water after the processing flows out from this water outlet; Bottommost is provided with an evacuated tube, to remove the throw out of bottom.
An intake pump, one end are provided with pending water water inlet pipe and flocculant concentration pipe, and the pending water water-in in the other end and the reactor is connected;
A dissolved air water water inlet pipe, the one end is connected with pressure air-dissolving tank, and the dissolved air release in the other end and the reactor is connected.
Dreg collecting slot connects a scum pipe in the said apparatus, and scum silica frost is discharged thus.
The treating water water outlet is provided with a valve in the said apparatus, can regulate reactor median water level height.
Be connected with under meter and water pump valve between intake pump and the pending water water-in in the said apparatus, can show and control the flow velocity of pending water.
Process of the present invention is: being blended in the intake pump of flocculation agent and pending water finished, being reflected in the countercurrent, copolymerizing reactor of flocculation and bubble and flco finished, pending water flows downward in the reactor, dissolved air water upwards flows, water after the processing flows out at reactor bottom, and scum silica frost is discharged in the reactor head overflow.
Description of drawings
Provide embodiment below and also in conjunction with the accompanying drawings the present invention is described in detail, wherein:
Fig. 1 is the synoptic diagram of apparatus of the present invention.
Fig. 2 is the relation of dosage of the present invention and turbidity removal rate.
Fig. 3 changes along the journey turbidity for reactor of the present invention.
Fig. 4 is the water turbidity after handling under the different hydraulic load situations of the present invention.
Embodiment
Please in conjunction with reference to figure 1, flocculation agent enters water pipe 1 from the mouth 3 that adds that adds pipe 2, form mixed solution with pending water, utilize the impeller rotation of intake pump 4 to mix, mixing water down enters countercurrent, copolymerizing and air-float reactor 8 through pending water water-in 7 current, and its flow velocity is shown and control by under meter 5 and water pump valve 6.Pressure air-dissolving tank 13 up enters countercurrent, copolymerizing and air-float reactor 8, and discharges microbubble by dissolved air water water inlet pipe 9, dissolved air release 10 current.Mixing water is in the process that flows downward, micro-bubble in the micro-floccule and the mobile dissolved air water that makes progress comes in contact throwing out, the dreg collecting slot 16 that the interpolymer that forms utilizes the buoyancy of bubble to rise to reactor 8 tops is discharged through scum pipe 17, and treating water flows downward and flows out by the treating water outlet 11 of reactor 8 bottoms.For guaranteeing the quality for the treatment of water, an evacuated tube 15 by valve 14 controls is set in the bottom of reactor 8, be used for getting rid of the throw out of reactor 8 bottoms; For guaranteeing that scum silica frost can enter dreg collecting slot 16 smoothly in the reactor 8, can come the elevation of water surface in the conditioned reaction device 8 simultaneously, scum silica frost is overflowed in the dreg collecting slot 16, finally discharge by scum pipe 17 by the valve 12 that is located at treating water water outlet 11.
The present invention has made full use of pneumatically supported advantage, and the water-borne glue body particle after microbubble and dispensing are taken off is surely interacted; The fluidised form of pending water and dissolved air water countercurrent flow is disorderly attitude, and it is more abundant that bubble is contacted with particulate; At utmost utilized the contact medium effect of bubble, made the rapider reaction of flocculation; Form bubble-flco suspended layer in reactor, can at utmost block and carry particulate matter, the removal because scum silica frost constantly floats has guaranteed the renewal of suspended layer again simultaneously.
Under request in person in conjunction with referring to figs. 2 to Fig. 4, in order to effect of the present invention to be described:
Fig. 2 is the relation of dosage of the present invention and turbidity removal rate.Impose a condition and close aluminium, water inlet pipe caliber 20mm, countercurrent, copolymerizing and air-float reactor diameter 200mm for: flocculation agent adopts polymerization chlorine, high 2100mm, water-in are apart from reactor head 200mm, and dissolved air release is apart from reactor bottom 400mm, water outlet is apart from bottom 100mm, dissolving pressure 3.9Kgf/cm
2, reflux ratio is 10%, treating water flow 300L/hr, and as can be seen from Figure 2, the present invention just can reach removal effect preferably when dosage is smaller.
Fig. 3 shows changing along the journey turbidity of reactor of the present invention.Impose a condition for: flocculation agent closes aluminium for polymerization chlorine, and dosage is with AL
2O
3Count 10mg/L, install same precedent.As can be seen from the figure, turbidity is higher in distance water-in 20-80cm scope, even above raw water turbidity, explanation has formed bubble-flco suspended layer in the countercurrent, copolymerizing reactor, when the distance water-in surpasses 100cm, turbidity obviously descends, and illustrates that most of particulate matter mass-energy removes in suspended layer.
Fig. 4 shows the water turbidity of the present invention after handling under the different hydraulic load situations.Install same precedent.As can be seen from the figure, increase along with hydraulic load, turbidity removal rate reduces right, but work as hydraulic load in 200-400L/hr (2.40-4.49mm/s) scope, it is not very greatly that delivery turbidity changes, when hydraulic load reached 500L/hr, clearance just sharply descended, but treatment process of the present invention has certain shock absorption to the impact of hydraulic load.
The inventive method is easy, and the device compact layout and structure is convenient to automatic control, saves floor space and working time.
Claims (5)
1, a kind of countercurrent, copolymerizing and air-float process for purifying water is characterized in that:
Flocculation agent is thrown in the water sucking mouth of pending water intake pump, made flocculation agent and pending water at water
Mix in the pump;
Mixed pending water is opposite with the flow direction of dissolved air water in the countercurrent, copolymerizing reactor.
2, be used to realize the device of the described method of claim 1, mainly include:
A countercurrent, copolymerizing and air-float reactor is a column tank container, and the upper end of its inside is provided with a pending water water-in, and pending water is inflow reactor from up to down; The lower end is provided with a dissolved air release, the bottom-up inflow reactor of dissolved air water; The top is provided with a dreg collecting slot, collects the scum silica frost that reaction produces; The bottom is provided with treating water outlet, and the water after the processing flows out from this water outlet; Bottommost is provided with an evacuated tube, to remove the throw out of bottom;
An intake pump, one end are provided with pending water water inlet pipe and flocculant concentration pipe, and the pending water water-in in the other end and the reactor is connected;
A dissolved air water water inlet pipe, the one end is connected with pressure air-dissolving tank, and the dissolved air release in the other end and the reactor is connected
3, device according to claim 2 is characterized in that dreg collecting slot connects a scum pipe.
4, device according to claim 2 is characterized in that the treating water water outlet is provided with a valve, can regulate reactor median water level height.
5, device according to claim 2 is characterized in that being connected with under meter and water pump valve between intake pump and the pending water water-in, can show and control the flow velocity of pending water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01120638 CN1397503A (en) | 2001-07-19 | 2001-07-19 | Countercurrent, copolymerizing and air-float process for purifying water and its equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01120638 CN1397503A (en) | 2001-07-19 | 2001-07-19 | Countercurrent, copolymerizing and air-float process for purifying water and its equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1397503A true CN1397503A (en) | 2003-02-19 |
Family
ID=4664282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01120638 Pending CN1397503A (en) | 2001-07-19 | 2001-07-19 | Countercurrent, copolymerizing and air-float process for purifying water and its equipment |
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| CN (1) | CN1397503A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837080B (en) * | 2005-03-21 | 2010-06-09 | 大连交通大学 | Co-coagulating gas-floating water purifying system and process |
| CN102452694A (en) * | 2010-10-14 | 2012-05-16 | 中国石油化工股份有限公司 | Air floatation treatment method for wastewater |
| CN103073119A (en) * | 2012-09-14 | 2013-05-01 | 大连格兰清水环境工程有限公司 | Oil-containing emulsion wastewater treatment method and apparatus thereof |
| CN107324482A (en) * | 2017-07-11 | 2017-11-07 | 西安建筑科技大学 | Efficient automatic slag discharge device and method in a kind of ozone air-float technique |
| CN107867740A (en) * | 2016-09-26 | 2018-04-03 | 上海和惠生态环境科技有限公司 | A kind of oily waste water electric flocculation depth air-flotation system |
| CN110642408A (en) * | 2019-10-22 | 2020-01-03 | 新乡市绿丰环保工程有限公司 | Combined slaughter wastewater pretreatment device and operation method thereof |
-
2001
- 2001-07-19 CN CN 01120638 patent/CN1397503A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837080B (en) * | 2005-03-21 | 2010-06-09 | 大连交通大学 | Co-coagulating gas-floating water purifying system and process |
| CN102452694A (en) * | 2010-10-14 | 2012-05-16 | 中国石油化工股份有限公司 | Air floatation treatment method for wastewater |
| CN102452694B (en) * | 2010-10-14 | 2013-06-19 | 中国石油化工股份有限公司 | Air floatation treatment method for wastewater |
| CN103073119A (en) * | 2012-09-14 | 2013-05-01 | 大连格兰清水环境工程有限公司 | Oil-containing emulsion wastewater treatment method and apparatus thereof |
| CN103073119B (en) * | 2012-09-14 | 2016-04-06 | 大连格兰清水环境工程有限公司 | A kind of emulsifying wastewater treatment process and device |
| CN107867740A (en) * | 2016-09-26 | 2018-04-03 | 上海和惠生态环境科技有限公司 | A kind of oily waste water electric flocculation depth air-flotation system |
| CN107324482A (en) * | 2017-07-11 | 2017-11-07 | 西安建筑科技大学 | Efficient automatic slag discharge device and method in a kind of ozone air-float technique |
| CN110642408A (en) * | 2019-10-22 | 2020-01-03 | 新乡市绿丰环保工程有限公司 | Combined slaughter wastewater pretreatment device and operation method thereof |
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