CN203128331U - Air flotation-flocculation device for treating oily wastewater - Google Patents
Air flotation-flocculation device for treating oily wastewater Download PDFInfo
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- CN203128331U CN203128331U CN 201320043377 CN201320043377U CN203128331U CN 203128331 U CN203128331 U CN 203128331U CN 201320043377 CN201320043377 CN 201320043377 CN 201320043377 U CN201320043377 U CN 201320043377U CN 203128331 U CN203128331 U CN 203128331U
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Abstract
The utility model discloses an air flotation-flocculation device for treating oily wastewater. The air flotation-flocculation device for treating oily wastewater comprises a test container, a rotor flow meter, a rubber tube, a gas pump, an aeration head, a stirring paddle, a treatment liquid outlet and a dross outlet, wherein the stirring paddle is arranged in the test container; the dross outlet is formed on the side wall at the upper end of the test container; the treatment liquid outlet is formed in the side wall at the lower end of the test container; the aeration head is arranged at the bottom of the test container; and the aeration head is connected with the gas pump by the rubber tube with the rotor flow meter. The air flotation-flocculation device for treating oily wastewater can be used for combining two operation units including the air flotation unit and the flocculation unit in the same treatment device based on the good treatment effect of the air flotation-flocculation process to the oily waste water, so that the air flotation-flocculation device is not only simple to operate, but also small in floor space, lower in cost and high in treatment efficiency. During the air flotation process, the conditions are given by the aeration head. During the flocculation process, power is provided by the stirring paddle.
Description
Technical field
The utility model belongs to the chemical plant installations field, is specifically related to a kind of air supporting-flocculation plant of handling oily(waste)water.
Background technology
Petroleum by-product such as lubricating oil, machine oil is widely used in the internal structure of moving partss such as automobile, and it can play effects such as lubricated, cooling, anti-attrition, cleaning, sealing.In addition, in the recovery process of oil, can produce a large amount of oily(waste)waters.So lubricated wet goods oily(waste)water can appear in the trade effluent usually.Because the main component of lubricated wet goods oily(waste)water is a series of long chain alkanes, belong to hardly degraded organic substance, thereby in case microorganism will be wrapped up the metabolism of restriction micro-organisms when entering sewage work's biodegrade, even cause the death of microorganism, if this class waste water directly enters in the water without processing, will cause the oil film of a large amount of variable thickness to bubble through the water column.According to surveying and determination, every kilogram of oil can cover about 5000 square metres waters.These oil films make water and atmospheric isolation, not only destroy self purification of water body, aqueous vapor exchange capacity, influence hydrobiological growth, even can cause human multiple disease.So, before carrying out biochemical treatment, must handle it.
The air supporting method is the sepn process based on tensio-active agent, and it preferentially is used in the process of mineral floating.Since it have the operating time short, occupation area of equipment is little, clearance is high, advantage such as can both handle flexibly to all contaminations is widely used in sewage disposal technology field such as purification of water quality.Recently, discover more and more that air supporting also is very promising for the processing of oily(waste)water.Add tensio-active agent in the air supporting process, tensio-active agent can preferentially stick on gas/water termination and reduce air-water interface tension force, and hydrophilic group is attached to water, and hydrophobic group is attached to gas phase.Can strengthen the stability of bubble like this, reduce the lift velocity of bubble and hinder the warm merger of bubble, the size of bubble reduces, and increases thereby the specific surface area of bubble increases the clearance that makes pollutent.Flocculence claims coacervation again, is to add a certain proportion of flocculation agent in waste water, generates hydrophobic floss in sewage, with sedimentation or air floating method floss is removed then.Add pollutents such as to make micromolecular oil droplet behind the flocculation agent and flocculate into big flco, and then carry out air supporting, can improve the removal efficient of air supporting process pollutent like this.So, often use air supporting-flocculence to handle waste-water from coal mine, plastics waste water and oily(waste)water etc.Air supporting-flocculation usually wants a plurality of processing units to finish in actual applications, such as air flotation pool, and flocculation basin, oil trap etc., so not only can floor space big, and complicated operation, infusion of financial resources is big.
Summary of the invention
Deficiency at the prior art existence, the purpose of this utility model is, a kind of air supporting-flocculation plant of handling oily(waste)water is provided, the good result that this device is handled oily(waste)water based on air supporting-flocculence can be combined in two operating units of air supporting and flocculation in the same treatment unit and finish.
In order to realize above-mentioned technical assignment, the utility model takes following technical scheme to be achieved:
A kind of air supporting-flocculation plant of handling oily(waste)water, comprise test container, spinner-type flowmeter, sebific duct, air pump, aeration head, stirring rake, treatment solution spout and scum silica frost relief outlet, wherein, stirring rake is installed in the test container, the sidewall of test container upper end is provided with the scum silica frost relief outlet, the sidewall of test container lower end is provided with the treatment solution spout, and the bottom of test container is equipped with aeration head, and aeration head links to each other with air pump by the sebific duct that has spinner-type flowmeter.
The utility model also has following technical characterstic:
Described test container is the 10L transparent organic glass container that sidewall has scale.
Test container sidewall between described treatment solution spout and the scum silica frost relief outlet is provided with standby water discharge valve.
Described air pump adopts vacuum air pump.
Described treatment solution spout is the copper pipe that has valve.
Described scum silica frost relief outlet is the copper pipe that has valve.
The good result that device of the present utility model is handled oily(waste)water based on air supporting-flocculence can be combined in two operating units of air supporting and flocculation in the same treatment unit and finish.By this combination, not only easy and simple to handle, and also floor space is little, and cost is few, the processing efficiency height.In the air supporting process, give condition by aeration head.In the process of flocculation, give power by stirring rake.
Description of drawings
Fig. 1 is setting drawing of the present utility model.
Fig. 2 is the algorithm of application examples of the present utility model.
Fig. 3 is that the pH value is to the influence of lubricating oil waste water COD clearance.
Fig. 4 is that the dosage of flocculation agent chitosan is to the influence of lubricating oil waste water COD clearance.
Fig. 5 is that churning time is to the influence of lubricating oil waste water COD clearance.
Fig. 6 is that the air supporting time is to the influence of lubricating oil waste water COD clearance.
The implication of each label is among the figure: 1-test container, 2-spinner-type flowmeter, 3-sebific duct, 4-air pump, 5-aeration head, 6-stirring rake, 7-treatment solution spout, 8-scum silica frost relief outlet, the standby water discharge valve of 9-.
Below in conjunction with drawings and Examples particular content of the present utility model is done explanation in further detail.
Embodiment
Below provide specific embodiment of the utility model, need to prove that the utility model is not limited to following specific embodiment, all equivalents of doing on present techniques scheme basis all fall into protection domain of the present utility model.
Defer to technique scheme, as shown in Figure 1, a kind of air supporting-flocculation plant of handling oily(waste)water comprises test container 1, spinner-type flowmeter 2, sebific duct 3, air pump 4, aeration head 5, stirring rake 6, treatment solution spout 7 and scum silica frost relief outlet 8, standby water discharge valve 9.Wherein, stirring rake 6 is installed in the test container 1, the sidewall of test container 1 upper end is provided with scum silica frost relief outlet 8, the sidewall of test container 1 lower end is provided with treatment solution spout 7, the bottom of test container 1 is equipped with aeration head 5, and aeration head 5 links to each other with air pump 4 by the sebific duct 3 that has spinner-type flowmeter 2.
Scum silica frost relief outlet 8 is for having the copper pipe of valve.
Algorithm of the present utility model is as follows:
(1) in test container 1, adds pending emulsifying liquid waste water, add flocculation agent, open stirring rake 6, carry out flocculation reaction.
(2) after the flocculation reaction fully, stop to stir, open air pump 4 and begin to carry out the air supporting reaction.
(3) react completely after, the scum silica frost that bubble takes on the liquid level in the air supporting reaction is discharged by scum silica frost relief outlet 8, the water outlet after the processing is discharged by treatment solution spout 7.
(4) water after will handling is monitored, and surveys its processing efficiency, wherein, utilizes the clearance of COD, and turbidity, the content of oily substance etc. come the feasibility of verifying attachment as index.
Application examples:
Using device of the present utility model handles the lubricating oil waste water that extensively exists in the actual industrial, using compound surfactant in the experiment is flotation agent, the biological flocculant chitosan is flocculation agent, then to different pH, the dosage of chitosan, churning time, air supporting time are as single factor, choose the top condition of handling lubricating oil waste water according to processing efficiency, come the feasibility of demo plant according to processing efficiency
Be illustrated in figure 2 as should use-case algorithm:
(1) taking environmental conservation into consideration factor selective flotation agent: the flotation agent of should use-case selecting for use is negatively charged ion rhanolipid as biosurfactant and negatively charged ion chemistry tensio-active agent sodium lauryl sulphate.
(2) tensio-active agent is composite: mass ratio is at the rhamnolipid of 1:1～10:1 and sodium lauryl sulphate (should use-case in every part be 0.25g) and 250ml distilled water wiring solution-forming, measure interfacial tension with the JZHY-180 interfacial tensimeter, obtaining the minimum proportioning of interfacial tension value is 7:1.Choose this ratio and be because the amount of added tensio-active agent is minimum when reaching minimum interfacial tension, can play economy, the effect of environmental protection.During the minimum interfacial tension of the system that reaches in addition, bubble is the most stable, the climbing speed minimum, and the bubble size minimum, so the specific surface area maximum is the removal efficient maximum of oily(waste)water.
(3) contain the preparation of the lubricating oil waste water of tensio-active agent: mass ratio is that rhamnolipid and the sodium lauryl sulphate compound surfactant (every part is 2g in the application examples) of 7:1 poured in the test container 1 that 10L water is housed with the lubricating oil of 16.667g, open stirring rake 6, stir certain hour it is reacted completely.
(4) set up the single factor analysis experiment: the influence that dosage, churning time and the air supporting time that this experiment takes single-factor analysis therapy to investigate pH value, settling time, chitosan removes the lubricating oil waste water COD, because water temperature is wayward and influence is little in experiment, so ignored this factor.Based on coagulation test, the churning time at a slow speed of choosing stirring rake 6 is 50r/min, and churning time is 300r/min fast.Regulate pH with sulfuric acid and sodium hydroxide.
(5) select the suitableeest condition according to the clearance of COD: the optimum condition that compound surfactant and treatment with chitosan lubricating oil waste water are removed COD is that pH is 7, and the dosage of chitosan is 20ml, and churning time is 20min, and the air supporting time is 10min.
The result proves, the clearance of COD is up to more than 90% under optimum condition.
With the biological flocculant chitosan lubricating oil waste water of 10L is handled.Fig. 3 has provided the influence of pH value to the COD clearance.Fig. 4 has provided the amount of chitosan to the influence of COD clearance.Fig. 5 churning time is to the influence of COD clearance.Fig. 6 air supporting time is to the influence of COD clearance.
So by should use-case verifying the good technique effect of this device, it has floor space little, convenience operation can be economical, handles oily(waste)water efficiently.
Claims (6)
1. air supporting-flocculation plant of handling oily(waste)water, it is characterized in that, comprise test container (1), spinner-type flowmeter (2), sebific duct (3), air pump (4), aeration head (5), stirring rake (6), treatment solution spout (7) and scum silica frost relief outlet (8), wherein, stirring rake (6) is installed in the test container (1), the sidewall of test container (1) upper end is provided with scum silica frost relief outlet (8), the sidewall of test container (1) lower end is provided with treatment solution spout (7), the bottom of test container (1) is equipped with aeration head (5), and aeration head (5) links to each other with air pump (4) by the sebific duct (3) that has spinner-type flowmeter (2).
2. air supporting-the flocculation plant of processing oily(waste)water as claimed in claim 1 is characterized in that, described test container (1) has the 10L transparent organic glass container of scale for sidewall.
3. air supporting-the flocculation plant of processing oily(waste)water as claimed in claim 1 is characterized in that, test container (1) sidewall between described treatment solution spout (7) and the scum silica frost relief outlet (8) is provided with standby water discharge valve (9).
4. air supporting-the flocculation plant of processing oily(waste)water as claimed in claim 1 is characterized in that, described air pump (4) adopts vacuum air pump.
5. air supporting-the flocculation plant of processing oily(waste)water as claimed in claim 1 is characterized in that, described treatment solution spout (7) is for having the copper pipe of valve.
6. air supporting-the flocculation plant of processing oily(waste)water as claimed in claim 1 is characterized in that, described scum silica frost relief outlet (8) is for having the copper pipe of valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043377 CN203128331U (en) | 2013-01-25 | 2013-01-25 | Air flotation-flocculation device for treating oily wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043377 CN203128331U (en) | 2013-01-25 | 2013-01-25 | Air flotation-flocculation device for treating oily wastewater |
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| CN203128331U true CN203128331U (en) | 2013-08-14 |
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| CN 201320043377 Expired - Fee Related CN203128331U (en) | 2013-01-25 | 2013-01-25 | Air flotation-flocculation device for treating oily wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973652A (en) * | 2014-04-08 | 2015-10-14 | 辽宁石油化工大学 | Lab-scale test equipment for oil separation tank |
| CN111137960A (en) * | 2020-01-13 | 2020-05-12 | 宁波渤川废液处置有限公司 | Air-float separation method and device for solid-liquid separation in waste emulsion |
| CN112710617A (en) * | 2020-07-02 | 2021-04-27 | 科之杰新材料集团(广东)有限公司 | Flocculation performance test evaluation method of flocculant for washing sand |
-
2013
- 2013-01-25 CN CN 201320043377 patent/CN203128331U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973652A (en) * | 2014-04-08 | 2015-10-14 | 辽宁石油化工大学 | Lab-scale test equipment for oil separation tank |
| CN111137960A (en) * | 2020-01-13 | 2020-05-12 | 宁波渤川废液处置有限公司 | Air-float separation method and device for solid-liquid separation in waste emulsion |
| CN111137960B (en) * | 2020-01-13 | 2022-02-22 | 宁波渤川废液处置有限公司 | Air-float separation method and device for solid-liquid separation in waste emulsion |
| CN112710617A (en) * | 2020-07-02 | 2021-04-27 | 科之杰新材料集团(广东)有限公司 | Flocculation performance test evaluation method of flocculant for washing sand |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140125 |