CN207511982U - A kind of oil-containing and Fat wastewater treatment are with efficiently separating system - Google Patents
A kind of oil-containing and Fat wastewater treatment are with efficiently separating system Download PDFInfo
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- CN207511982U CN207511982U CN201721577896.5U CN201721577896U CN207511982U CN 207511982 U CN207511982 U CN 207511982U CN 201721577896 U CN201721577896 U CN 201721577896U CN 207511982 U CN207511982 U CN 207511982U
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Abstract
The utility model discloses a kind of oil-containing and Fat wastewater treatments with efficiently separating system, it is made a return journey depollution object by injecting air into the dissolved air water generated in clear recirculation water under stress, then it is mixed after the dissolved air water is discharged with the waste water come in, the air wherein dissolved is discharged in the form of the microbubble for adhering to pollutant from waste water, during release, with pressure reduction, molten gas slow release in flco is grown up, moisture in flco is squeezed out, gas and solid flco form Porous hollow form, moisture content significantly reduces while itself proportion is more and more lighter, enter separate tank after ultimately forming scum silica frost, scum silica frost is struck off by the Slag Scraping Device above separate tank, follow-up dehydration is made in the slag bucket discharge that the scum silica frost struck off is connected below, the water of separation is collected through outlet pipe through water outlet and is discharged.The utility model has the advantages that outlet effect is good, and adding of agent is few, and sludge quantity is few, small investment, and control is simple, easy to maintain, and repair is few.
Description
Technical field
The utility model belongs to oiliness sewage treatment technical field, and in particular to a kind of oil-containing and Fat wastewater treatment are high
Imitate piece-rate system.
Background technology
With the development of the social economy, the waste water pollution problem that process of industrialization is brought becomes increasingly conspicuous, environmental pollution is more next
More paid attention to by the people, and oil-containing and the waste water of grease type are common in numerous waste water, easily bring the work of environmental pollution
Industry and sanitary wastewater, harm is serious, and processing at home and abroad attracts great attention.At present in petrochemical industry, vehicle cleaning, machine
Oil-containing and the waste water of grease type can be generated during tool processing, food processing etc..Oil pollutant once enters water body at once
Oil film is diffuseed to form in the water surface, prevents water body reoxygenation from air.Oils migration circle is wide, degradation speed is slow, finally influences people
Class health.It is different with the existence form of oils in water according to the source of oily waste water, it can be divided into：Oil slick, dispersed oil, oil emulsion
With four major class of dissolved oil.These oil components are complicated, containing a large amount of mineral oil or vegetable oil, emulsifier and other organic principles,
Property is stable, removal difficulty is big.So how efficiently to carry out water-oil separating to reach discharge standard is still a problem.Cut-off
Up to the present, the method for more commonly used processing oil-containing and the waste water of grease type mainly have gravitational separation process, centrifugal separation,
Bubble-floating Method, ultra-filtration filters method and absorption method etc..These types of facture has the advantage and disadvantage of oneself.Gravitational separation process and centrifugation
Method can only detach oil slick in water and the larger dispersed oil of a small amount of grain size, and the oil base for disperseing, emulsifying, dissolving originally is not removed
Effect.Therefore usually as the pretreatment unit of oily waste water.
By being passed through air and making to generate microbubble (also needing to add in flotation agent or coagulant sometimes) in water in oily wastewater,
Suspended particulate in floating carburetion, dispersed oil or the water that grain size is 0.25~25 μm in sewage is made to be attached on bubble, on bubble
The technology for climbing up on top of the water and being recycled.Bubble is since the buoyancy of itself takes oil droplet out of the water surface, to realize separation of solid and liquid process.
In practical applications, due to waste water quality difference, consider the factors such as treatment effect and capital construction, operating cost, selected gas
Floating technique is also different.It is different according to the method for generating bubble, air-flotation process technology be divided into air-dissolving air-float, vane type air supporting and
3 kinds of injection type gas floating.More commonly used dissolved air flotation has vacuum dissolved air flotation and method of pressed dissolved-air release, the former is by various
At present using seldom, the latter is commonly used Bubble-floating Method for factor limitation.Bubble-floating Method is general and coagulation technology is combined, and can go
Most of dispersed oil in water removal also has certain removal rate to the oil for emulsifying and dissolving, therefore is using most oily waste waters
Processing method.But there are several big shortcomings for existing tradition Bubble-floating Method processing oily waste water：Oil slick is difficult, and flotation time stops length；
Sludge is easier to be deposited on flotation tank bottom, and release easily blocks；When treating capacity is big, airfloat equipment takes up a large area, and throws
It provides costly；Equipment globality is imperfect, cumbersome for installation；To the oily waste water based on oil emulsion and dissolved oil, traditional air supporting
Removal effect it is undesirable.
Ceramic membrane oil removal process is mainly used for condensed emulsified mineral oil in recent years.Although hyperfiltration technique under certain condition may be used
To efficiently separate grease, but the fouling membrane generated in concentration process can lead to membrane flux deep fades, and transmembrane pressure is substantially increased,
Membrane lifetime shortens soon, and UF membrane efficiency degradation causes energy consumption to increase.Most of ultrafiltration membrane is put into after half a year is run
The frequent clean phase not only consumes a large amount of cleaning agents, and leads to the problem of the secondary pollution of oil-containing cleaning solution.Few ultrafiltration membranes
Service life can be more than 2 years.Since the investment of film is usually larger, the initial investment of ultrafiltration oil removing system and operating cost are all
It is very high.Once generating oil slick due to being not good at pretreatment in system, concentrate precipitation etc., ultrafiltration membrane can be brought irreversible
It destroys, so as to cause the failure of whole system.
There is a method in which it is：Filtering and absorption method, this method is mainly with special filtrate (walnut shell, oil suction plastics)
Etc. oil micro in water is adsorbed, but this method is suitable only for the situation that oil content is very low in waste water, no it will cause filters
Expect saturation quickly.And it frequently cleans and regenerates the mechanical damage that can cause filtrate, and due to being difficult to thorough backwash filtrate
It can gradually fail, need often to be supplemented, operating cost is also higher.
About extensive use of the efficient flotation separation isolation technics in the wastewater treatment of oil-containing and grease, recent many water process
Manufacturer all proposes the viewpoint for being combined traditional air supporting and cyclone separation process, is achieved in the waste water of oil-containing and grease
Some achievements in research.
From the foregoing, it can be seen that existing treatment technology is difficult to obtain excellent processing to the waste water of oil-containing and grease to imitate at present
Fruit, particularly when oil-containing and the waste water of grease, when the component of this kind of waste water is more complicated, intractability also can accordingly increasingly
Greatly.
Utility model content
For deficiency existing for current prior art, the main purpose of the utility model is that providing a kind of oil-containing and grease
The processing of waste water efficiently separates system.
The purpose of utility model of the utility model is realized by following technical step.
The use in waste water treatment efficient flotation separation piece-rate system of a kind of oil-containing and grease, including automatic medicament feeding system, reflux pump, molten
Gas tank, release device, reaction tank, complicated slot, discharge bay, the medicament realize accurate dosing by automated dispensing medicine system,
High pressure reflow pump squeezes into water in dissolving, and medicament and compressed air also enter Multi-stage spiral speed difference three-phase mixer, are compressing
After air pours dissolving, gas is incorporated in water, after forming dissolved air water, by release, by dissolved air water release in reaction tank
It is mixed with the raw water after dosing, is allowed to enter in reaction tank after coming into full contact with pollutant, constantly be reduced with pressure, in flco
Molten gas slow release is grown up, and the moisture in flco is squeezed out, and gas and solid flco form Porous hollow form, and moisture content is notable
It is more and more lighter to reduce itself proportion simultaneously, can not voluntarily float by external force, enters separate tank after ultimately forming scum silica frost, passes through
Slag Scraping Device above separate tank strikes off scum silica frost, and follow-up dehydration is made in the slag bucket discharge that the scum silica frost struck off is connected below, point
From water enter discharge bay through water outlet weir plate, then discharge by outlet pipe.
Compared with prior art, the beneficial effects of the utility model are：
1st, high treating effect superior performance, stable water outlet are reliable；Few reagent consumption amount；
2nd, the quantity of slag is few, only 1/4 or so of traditional handicraft；
3rd, it is easy for installation, it is easy to operate, it is easy to grasp；
4th, removal efficiency is high, ranges up to more than 99%；
5th, it is small, take up an area and save, construction investment expense is low；
6th, control is easy, no vulnerable part, no blocking, and maintenance cost is low；
7th, standardized product, nonstandard customization；
8th, it is small and uniform to produce microbubble, such as milk.
Compared with prior art, the core of the utility model is derived from " air dissolving system and release system " and phase
" bubble nucleus growth technology ", the former can effectively control gas to be dissolved in water, ensure the required enough pressure of dissolved air water；The latter
Gas fills entire flco under dissolved state after ensureing release, and countless micro bubbles are inside flco and periphery generates nucleus
Growth, once pressure reduction, bubble can rapidly expand inside flco, and effectively be attached to flco periphery.And traditional
In coagulation air-float, coagulant is with flocculant since invalid flco bridges, and flco moisture content is high, and reagent consumption amount is big, and gas
Steep larger, bubble molten gas rupture during rising causes flco and particulate matter to be deposited to bottom of pond, leads to the mistake of entire flotation
Journey fails, and its insufficient stirring causes many particulate matters that cannot be captured by medicament, while floc particle and bubble are not
Steady contact causes desorption phenomenon often occurs, and water outlet is difficult to control.Therefore the utility model efficient flotation separation piece-rate system represents
A kind of advanced dissolved air flotation technique, its every characteristic have all surmounted traditional air-dissolving air-float.
Description of the drawings
Fig. 1 is that the utility model whirlpool can the fast structure diagram for revolving piece-rate system；
Fig. 2 is the process flow chart of the utility model oily wastewater treatment method；
In figure：1st, pond is mixed soon；2nd, first segment flocculation basin；3rd, second segment flocculation basin；4th, Slag Scraping Device；5th, efficient release；6、
Outlet pipeline system；7th, weir plate is adjusted；8th, reflux pump；9th, dissolving；10th, automatic medicament feeding system；11st, discharge bay；12nd, slag chute；
13rd, separate tank；14th, reaction tank.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
Embodiment 1
Certain food factory's food processing oil-containing and Fat wastewater treatment,
Raw water situation：Discharge of sewage 3m3/ hr, raw water oil emulsion 3000~8000mg/L, PH are 4~11.
As depicted in figs. 1 and 2, medicament iron chloride and polyacrylamide are quantitatively adding mixed pond 1 soon and the by metering pump
After one section of flocculation basin 2, the mixed blender in pond 1 and the blender of first segment flocculation basin 2 and second segment flocculation basin 3 soon are opened, will be stirred
The machine frequency conversion rotating speed of mixing mixes up.
Sewage self-flowing (or being lifted into) mixes pond 1 soon, adds the medicine being configured with automatic medicament feeding system 10 in fast mixed pond 1
Agent, the water gravity flow in fast mixed pond 1 enters in first segment flocculation basin 2, after automatic medicament feeding system 10 adds the PAM being configured, the
Then mixed flocculation in one section of flocculation basin 2 is flow in second segment flocculation basin 3 certainly.Due to increasing by one section of flocculation time, and blender
It is set for frequency conversion, so as to generate sufficiently long streamline, increases the chance collided with medicament, and since there is no shearing
Power, agent molecule chain is without interruption, and micelle shape polymer is stretched sufficiently into long-chain molecularity, medicament institute band under speed difference
Charge utilization rate greatly increases, and reduces waste, and medicament is sufficiently mixed effect with raw water.
Water in second segment flocculation basin 3 is existed from flowing into reaction tank 14 by a large amount of molten carbonated drink that dissolving 9 generates
This release, with pressure reduction, solubilised state gas forms countless bubble nucleus by pollutant flco, these nucleus are directly grown
Among sludge flco, when pressure reduction air bubble expansion is to generate spongy flco, during flocs float, tiny flco is rapid
Coalescence, while bubble also drastically expands, and ties up the space of flco internal clearance water, flco moisture content and proportion further drop
Low, flco is solid and reaches very strong voluntarily upper floating capacity；
Flco enters separate tank 13 after being come out from efficient release 5, separate tank 13 is set above there are one Slag Scraping Device 4, scum silica frost
Chi Mianshang is concentrated at, is mutually accumulated, is bonded to scum silica frost blanket, formation entirety, which floats and passes through Slag Scraping Device 4, to be struck off, and upper floating capacity is slightly worse
Floc particle be washed into release area reacted with fresh floating flco and extra thin bubble multiple-contact, finally re-form excellent
Good scum silica frost is struck off by Slag Scraping Device 4；
The slag chute 12 that the scum silica frost struck off is connected below, which is discharged, makees follow-up dehydration, and the water of separation is through being discharged regulating weir
7 overflow of plate enters discharge bay 11, is discharged by outlet pipe.
Water outlet is provided with high pressure reflow pump 8, and the water handled well is back in pressure air-dissolving tank 9 by reflux pump 8, generates
Dissolved air water.
Original system treatment process：It is handled using coagulation-settlement process.
There are the following problems for former technique：
1. added amount of chemical is big；2. control is complicated, operation difficulty is big；3. capital intensive, operating cost it is very high (>20 yuan/ton
Water)；4. the dope containing oil emulsion 20% after concentration can not be disposed, a large amount of ultrafiltration ejected wash waters are difficult to handle；5. sedimentation effect is not
Good, a large amount of suspended matter and grease type enter subsequent biochemical processing section；6. sludge quantity is big, live sludge dewatering problem is severe,
Operation intensity is big.
It is discharged after processing：COD is in 4000mg/L or so.
The utility model utilizes efficient flotation separation piece-rate system treated result by the above method：
Iron chloride 20ppm is added, the oil emulsion of 95% COD and 99% is removed after cationic PAM, the place to go rate of SS is even more
Up to 99%, water outlet COD ＜ 1,000mg/L, oil emulsion ＜ 100mg/L；Investment is the 1/3 of ultrafiltration；It controls and its simple；It is super
Low operating cost, only consumption electricity and medicament, about 3.2 yuan/ton of water；Sludge yield is few, only the 1/8 of original system；Without easily
Damage part, it is only necessary to replace within 2 years primary reflux pump machine envelope.
Embodiment 2
Certain market kitchen waste water pretreatment, flow 20m3/hr
Raw water situation：Raw water BOD=2000mg/L, COD=3000-8000mg/L, grease 1500mg/L and essentially breast
Carburetion contains a large amount of surfactant, TSS=3000mg/L, PH=4~12
Original technique：It is pre-processed using traditional air supporting.
There are the following problems of problem for original technique：
1. coagulation demulsification often fails, water outlet oil-containing severely exceeds；
2. since pre-treatment fails to achieve the desired results, subsequent biochemical system is caused to be unable to operate normally；
3. disposal of oily sludge is difficult, foam is serious；
4. reagent consumption amount is big；
5. TSS places to go rate is low, outlet pipeline is often dirty stifled.
The utility model efficient flotation separation piece-rate system handling result：
95% is up to the removal rate of oil, is discharged oil-containing only 20-40mg/L, and be greatly saved occupation of land.The dirt of generation
1/4 of mud less than original system, and be easy to be dehydrated.Outlet effect is good, stable water outlet.Reagent consumption is only original 50%.
While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case of the principle and spirit for not departing from the utility model, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of oil-containing and Fat wastewater treatment are with system is efficiently separated, including mixing pond, first segment flocculation basin, second segment flocculation soon
Pond, efficient release, reflux pump, dissolving, automatic medicament feeding system, reaction tank, separate tank and discharge bay, it is characterised in that：Institute
It states first segment flocculation basin and is mounted on fast mixed side of the pond far from the sewage mouth that becomes a mandarin, the opposite side of the first segment flocculation basin is provided with
Second segment flocculation basin, the automatic medicament feeding system are mounted on fast mixed pond and the surface of first segment flocculation basin, the dissolving peace
Mounted in the surface of first segment flocculation basin and second segment flocculation basin, the dissolving is connected with reaction tank by efficient release,
The side of the reaction tank is provided with separate tank, and the bottom of the separate tank is provided with outlet pipeline system, the separate tank
Upper surface is provided with Slag Scraping Device, and the slag direction end of scraping of the Slag Scraping Device is provided with slag chute, and the side of the slag chute is provided with out
Pond, the centre of the discharge bay are provided with adjusting weir plate, and the discharge bay is connected by pipeline with dissolving, and is set in pipeline
It is equipped with reflux pump.
2. oil-containing according to claim 1 and Fat wastewater treatment are with efficiently separating system, it is characterised in that：It is described fast mixed
Spacing board is provided between pond and first segment flocculation basin, the spacing board makes to mix pond soon for top end opening and first segment flocculation basin connects
It is logical.
3. oil-containing according to claim 1 and Fat wastewater treatment are with efficiently separating system, it is characterised in that：Described first
Spacing board is provided between section flocculation basin and second segment flocculation basin, and the spacing board makes first segment flocculation basin and for bottom end opening
Two sections of flocculation basin connections.
4. oil-containing according to claim 1 and Fat wastewater treatment are with efficiently separating system, it is characterised in that：Described second
Be provided with three spacing boards between section flocculation basin and reaction tank, three spacing board for be followed successively by from right to left top end opening,
Bottom end opening and top end opening, the left end spacing board is is obliquely installed.
5. oil-containing and Fat wastewater treatment according to claim 1 or 4 are with efficiently separating system, it is characterised in that：It is described
Efficient release, which is arranged on, to be tilted between spacing board and middle ware partition board.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721577896.5U CN207511982U (en) | 2017-11-22 | 2017-11-22 | A kind of oil-containing and Fat wastewater treatment are with efficiently separating system |
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| CN201721577896.5U CN207511982U (en) | 2017-11-22 | 2017-11-22 | A kind of oil-containing and Fat wastewater treatment are with efficiently separating system |
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| CN207511982U true CN207511982U (en) | 2018-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107721025A (en) * | 2017-11-22 | 2018-02-23 | 上海悦境环保科技有限公司 | The processing method of a kind of oil-containing and oil wastewater and its efficiently separate system |
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2017
- 2017-11-22 CN CN201721577896.5U patent/CN207511982U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107721025A (en) * | 2017-11-22 | 2018-02-23 | 上海悦境环保科技有限公司 | The processing method of a kind of oil-containing and oil wastewater and its efficiently separate system |
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