CN203048732U - Sewage treatment device - Google Patents
Sewage treatment device Download PDFInfo
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- CN203048732U CN203048732U CN 201220694642 CN201220694642U CN203048732U CN 203048732 U CN203048732 U CN 203048732U CN 201220694642 CN201220694642 CN 201220694642 CN 201220694642 U CN201220694642 U CN 201220694642U CN 203048732 U CN203048732 U CN 203048732U
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Abstract
The utility model provides a sewage treatment device which comprises a pretreatment device, a coagulation air flotation tank, a biological contact oxidation pond and a secondary sedimentation tank, wherein the coagulation air flotation tank comprises a coagulation air flotation separation tank body and a coagulation air flotation device; and filler is arranged in the biological contact oxidation pond. According to the sewage treatment device provided by the utility model, the coagulation air flotation tank is combined with the biological contact oxidation pond; and based on the characteristics of uniform diffusion of micro-nano bubbles in water and large specific surface area and good mutual contact adsorption effect between fiber bundle-shaped fillers, the oxygen content and the oxygen transfer efficiency in the sewage are improved, the thrust of transferring oxygen into a biomembrane and the penetration depth in the biomembrane are increased, thus the activity of the biomembrane is enhanced, the active microorganisms are increased, and the organism degradation rate is improved.
Description
Technical field
The utility model relates to a kind of waste disposal plant, particularly relates to a kind of coagulation air-float and biological contact oxidation process of utilizing in conjunction with the waste disposal plant that carries out sewage disposal.
Background technology
Modern sewage disposal technology is divided by processing mode, can be divided into physical treatment, chemical treatment and biological treatment.The physical treatment method is called mechanical improvement method again.Mainly for separating of the suspension material in the waste water.This method biggest advantage is simple, easy row, respond well, and very economical.Physics improvement method commonly used has: gravitational separation process, centrifugal separation, filtration method and evaporative crystallization method etc.The main processing of method of chemical treatment to as if waste water in the pollution substance of solvability or colloidality.It both can make pollutant and water sepn, also can change some pollution substance and organism etc., therefore can reach the degree of purification higher than physical method.In the time of particularly will from waste water, reclaiming useful matter, contain in the waste water perhaps that certain is poisonous, during the harmful and material that is difficult for being degraded by microorganisms, adopt the chemical harnessing method the most suitable.Yet the Chemo-Therapy logos often need adopt chemical agent or material, so working cost is operated with the requirement of management and also compared strictness etc. generally all than higher.And, in the pre-treatment or last handling process of chemical method, also need be used physics improvement method usually.Utilize the method for microbiological treatment waste water, be called biological treatment or biochemical treatment process.In the process of microbial life activity, a part of deliquescent organic substance is for the synthesis of protoplasma and the repertory of cell; A part then becomes meta-bolites, and gives off energy, and supplies with the plasmic synthetic and vital movement of microorganism, makes the microorganism ground growth and breeding that can keep, thereby makes waste water obtain purification, and biological treatment utilizes this function exactly.According to the respiratory characteristic of microorganism, be divided into aerobic, anaerobism and facultative three major types microorganism, and aerobic treatment two class bioremediations.
Biological contact oxidation process belongs to aerobic biological process for treating, it be the microbial film that is attached on the carrier (filler) be main, a kind of efficient water technology of purification of organic waste water, the biomembrance process with activated sludge process characteristics has the advantage of activated sludge process and biomembrance process concurrently.Its method is in the body of pond filler to be set, and aeration carries out oxygenation to sewage at the bottom of the pond, and makes that sewage is in flow state in the body of pond, fully contacts with filler in the sewage to guarantee sewage.Requisite oxygen is supplied with by blast aeration in the general biological contact oxidation process, but because the sludge loading in the biological contact oxidation process is bigger, causes the required aeration rate of whole biological contact oxidation pond big, and energy consumption is higher; The blast aeration bubble is bigger, easily impacts microbial film, can cause biofilm detachment; And oxygen is skewness in water.
The utility model content
Based on this, be necessary at prior art problems, a kind of new waste disposal plant simple in structure, easy to use is provided.
The technical solution of the utility model is as follows:
A kind of waste disposal plant, described waste disposal plant comprises pretreatment unit, coagulation floatation, biological contact oxidation pond and secondary sedimentation basins;
Described coagulation floatation comprises coagulation air-float separate tank pond body and coagulation air-float device, be provided with filler in the described biological contact oxidation pond, described pretreatment unit is connected by lift pump with described coagulation floatation, the water outlet of described coagulation floatation is communicated with the water-in of described biological contact oxidation pond, and the water outlet of described biological contact oxidation pond is communicated with the water-in of secondary sedimentation basins.
Therein among embodiment, described coagulation air-float device is micro-nano bubble generator, described micro-nano bubble generator comprises pressure air-dissolving device and micro-nano bubble releasing device, described pressure air-dissolving device and micro-nano bubble releasing device are connected, described pressure air-dissolving device comprises water inlet pipe, pressurizing device, dissolved air water jar and dissolved air water delivery line, described micro-nano bubble releasing device comprises micro-nano bubble generator, and described micro-nano bubble generator is provided with jet hole; Described pretreatment unit is connected by water inlet pipe with described dissolved air water jar, described pressurizing device is connected with described dissolved air water jar, one end of described dissolved air water delivery line is connected with described dissolved air water jar, the other end of described dissolved air water delivery line is connected with described micro-nano bubble generator, and described micro-nano bubble generator is arranged on the bottom of described coagulation floatation body.
Among embodiment, described biological contact oxidation pond comprises pond body and filler therein, and described filler is the medium-soft bat wool, the volume of described filler account for described pond body volume 70% to 85%.
Among embodiment, the water outlet of described coagulation floatation is communicated with by the water-in of connecting pipeline with the bottom that is arranged on described biological contact oxidation pond therein.
Therein among embodiment, described air-floating apparatus arranges 2 micro-nano bubble releasing devices, one of them micro-nano bubble releasing device is arranged in the described coagulation floatation, and another micro-nano bubble releasing device is arranged on the bottom of described biological contact oxidation pond.
Among embodiment, described coagulation floatation also is provided with gas floatation separation device therein, and described gas floatation separation device comprises slag scraper, and described slag scraper is arranged on the top of described coagulation floatation.
The beneficial effects of the utility model are:
1 waste disposal plant of the present utility model is simple in structure, has saved the aerating apparatus of biological contact oxidation pond, can reduce the volume of biological contact oxidation pond thus, reduces construction investment;
2 waste disposal plants of the present utility model can be regulated micro-nano bubble amount and concentration in the water inlet of biological contact oxidation pond by regulating micro-nano bubble generator, and then can make the interior variation that keeps higher dissolved oxygen concentration to adapt to water quality, the water yield of biological contact oxidation pond, suitability is wide.
Description of drawings
Below in conjunction with concrete drawings and the specific embodiments, the utility model is further elaborated.
The overall schematic of an embodiment of the sewage treatment process that Fig. 1 adopts for waste disposal plant of the present utility model;
Fig. 2 is the overall schematic of an embodiment of waste disposal plant of the present utility model;
Fig. 3 is the overall schematic of an embodiment of the coagulation air-float device of waste disposal plant of the present utility model;
Fig. 4 is the overall schematic of an embodiment of the biological contact oxidation pond of waste disposal plant of the present utility model.
Embodiment
The utility model provides a kind of new waste disposal plant, waste disposal plant of the present utility model combines coagulation floatation and biological contact oxidation pond, utilize micro-nano bubble that coagulation air-float produces to the adhewsive action of biological contact oxidation pond, save the aerating apparatus of biological contact oxidation pond, reduced the volume of biological contact oxidation pond.Below in conjunction with specific embodiment the utility model is described in further details.
Referring to Fig. 1, the sewage treatment process that waste disposal plant of the present utility model adopts, this technology may further comprise the steps:
A: pre-treatment: will need the sewage collecting handled to the water collecting basin through after the pre-treatment, be driven in the coagulation floatation through lift pump; This step is removed large-sized floating matter, suspended substance and less solid matter;
B: coagulation air-float is handled: be provided with the coagulation air-float device in the coagulation floatation, sewage is carried out entering in the biological contact oxidation pond after coagulation air-float handles; In the dissolved air flotation process, the molecule that density and water approach in the removal sewage is as part oil content, fiber etc.;
C: bio-contact oxidation is handled: be provided with filler in the described biological contact oxidation pond, the different quality object is adopted the means of taming targetedly, preferred suitable biological bacteria, add biological bacteria, biological bacteria is bred at the filling surface raised growth, form microbial film, the pollutent based on BOD, COD in this step is removed;
D: secondary sedimentation is handled: the sewage overflow of handling through bio-contact oxidation directly discharges to secondary sedimentation basins process precipitation process and other subsequent disposal.Described other subsequent disposal can be to disinfect.
Present embodiment is handled coagulation air-float and bio-contact oxidation is handled and organically combined, and coagulation air-float is handled the oil content that can remove on the one hand in the sewage, fiber etc., and sewage contains a large amount of micro-nano bubbles after handling by coagulation air-float on the other hand.And micro-nano bubble has good adhewsive action to filler.It is that micro-nano bubble coagulation air-float is handled that coagulation air-float in the present embodiment is handled.It is to make air be dissolved in water under certain pressure and reach hypersaturated state that so-called micro-nano bubble coagulation air-float is handled, and makes the pressure air-dissolving Shuitu so reduce to normal pressure then, and the air that at this moment is dissolved in the water is overflowed from water with the form of micro-nano bubble.
It mainly is by the contact of the circulation between microbial film, organism and the oxygen three that biological contact oxidation process is purified waste water.Little through the micro-nano bubble volume in the sewage after the micro-nano bubble coagulation air-float processing, quantity is many, and good dispersity easily evenly spreads with water body, and the lifetime in water is long.After the sewage that contains micro-nano bubble enters contact-oxidation pool, at first, contact area between gas-liquid owing to increased, can improve the oxygen transfer efficiency, can guarantee has sufficient dissolved oxygen in the water body, and reduces aeration rate.And because laterally evenly diffusion of micro-nano bubble, in mobile process, oxygen in the sewage is evenly distributed, contained oxygen can fully contact with microbial film with organism in the micro-nano bubble simultaneously, moreover the surface of micro-nano bubble can the enrichment electric charge, improve biomembranous activity, improved biomembranous vigor and oxidation capacity.Sewage after present embodiment will be handled through coagulation air-float is directly as the water inlet of biological contact oxidation pond, utilize micro-nano bubble to the adhewsive action of filler, improved the oxygen amount in the sewage, improved the transfer efficiency of dirty water oxygen, increase impellent that oxygen shifts in the microbial film and the depth of penetration in the microbial film, make biomembranous active the raising, the living microorganism amount increases, and has improved organic degradation rate.Can reduce the aeration rate of biological contact oxidation pond like this, reduce aeration rate and the floor space of biological contact oxidation pond, save engineering investment cost.
Preferable, as a kind of embodiment, in the steps A, adopt grid device to carry out pre-treatment.The pretreated time of grid device is 5 to 7 hours.Also will carry out coagulation air-float owing to follow-up, therefore the pretreated time can be short slightly.
Preferable, as a kind of embodiment, among the step C, enter in the sewage of biological contact oxidation pond and contain the good micro-nano bubble of diffustivity, the diameter of described micro-nano bubble is 1 to 50 μ m; Can improve biological activity like this, thereby be conducive to the metabolism of microorganism.
Preferable, as a kind of embodiment, among the step C, described filler is the medium-soft bat wool, utilizes the adsorption between micro-nano bubble and bat wool, improves oxygen utilization efficient, reduces the oxygen usage quantity.The volume of described filler account for described biological contact oxidation pond volume 70% to 85%, the biofilm amount of described filler is 220kg/m
3To 380kg/m
3Medium-soft bat wool light weight, intensity height, physics, stable chemical performance are durable in use; And the medium-soft bat wool is three-dimensional arrangement in the water of turbulent fluctuation, can better contact with micro-nano bubble, and surface-area is big, and microbial film quantity is many, adhewsive action is strong, can fully contact with micro-nano bubble with sewage; And the medium-soft bat wool is difficult for blocked.The clearance rate of medium-soft fibrous packing is big, is conducive to the rising of micro-nano bubble, and the interface that also is conducive to simultaneously between microbial film and sewage is upgraded.Adopt the filler of fibrous bundle in sewage treatment process, to produce sludge quantity seldom, with low cost.The biomass of above-mentioned filler biofilm can form thick and closely knit microbial film at the filler of biological contact oxidation pond.The volume of described filler account for whole biological contact oxidation pond volume 70% to 85%; The sewage that enters biological contact oxidation pond in the present embodiment enters from the bottom of biological contact oxidation pond, so the medium-soft bat wool of present embodiment should be arranged in the whole biological contact oxidation pond uniformly to guarantee fully contacting of filler and micro-nano bubble.The medium-soft bat wool that the utility model adopts has certain intensity.The utility model organically combines medium-soft bat wool and micro-nano bubble, acting in conjunction, micro-nano bubble can improve the biomembranous biological activity on medium-soft bat wool surface, promote biomembranous metabolism, simultaneously the area that contacts, adsorbs between medium-soft bat wool and the micro-nano bubble is bigger, can be with enough micro-nano bubble absorption at filling surface, prolonged the lifetime that gas ducks in drink, improved the utilization ratio of oxygen in the bubble, enough spaces are provided for again the movement of micro-nano bubble.
Preferable, as a kind of embodiment, among the step B, the time that described sewage stops in coagulation floatation is 30 to 60 minutes, among the step C, the time that described sewage stops in biological contact oxidation pond is 1 to 6 hour.Sewage residence time of coagulation floatation to the sewage disposal important influence, if overstand, then the bubbles volume of air supporting generation can reduce and then have influence on the treatment effect of follow-up biological contact oxidation pond, if the residence time is too short, the poor effect of coagulation air-float then, the bubble that same air-dissolving air-float produces is low excessively, and the air bubble content in the sewage is low, also can influence the treatment effect of follow-up biological contact oxidation pond.Same, also there is very significant effects the residence time of sewage in biological contact oxidation pond to sewage disposal; If overstand, nutritive substance exhaust the deterioration that causes wastewater treatment efficiency easily, if the residence time is too short, pollution substance also is not able to do in time to be absorbed by the mushroom microorganism, can cause process result degrades equally.The utility model stopped sewage 30 to 60 minutes in coagulation floatation, namely by the oil content in the coagulation air-float removal sewage, fiber etc., the micro-nano air bubble content in the sewage is moderate simultaneously for sewage at this moment; Sewage of the present utility model stopped in biological contact oxidation pond 1 to 6 hour, and the nutritive ingredient in the sewage can satisfy the microbial growth demand, and the organic substance in the sewage can be in time by microbiological degradation, and microorganism active is stronger, and treatment effect is better.
The sewage water yield that needs to handle is 300 tons/day, and the water quality of sewage is as shown in table 1, and above-mentioned sewage collecting to water collecting basin,, is driven in the coagulation floatation through sewage pump after 5 hours through the grid pre-treatment;
Be provided with dissolved air flotation device in the coagulation floatation, by air-dissolving air-float sewage being carried out coagulation air-float handles, wherein, be filled with the medium-soft bat wool that accounts for whole biological contact oxidation pond volumetric spaces 85% in the biological contact oxidation pond, biological bacteria is joined in the biological contact oxidation pond, add sewage and fill, leave standstill emptying in 24 hours; And then the adding biological bacteria, grow microbial film on medium-soft bat wool surface this moment.The biomass that utilizes biofilm for the biological bacteria of 380kg/m3 to the sewage disposal in the biological contact oxidation pond after 3 hours, overflow is to secondary sedimentation basins; Handled 1.5 to 2 hours at secondary sedimentation basins.
In the present embodiment, the volume of water collecting basin is 1000 cubic metres, and the volume of coagulation coagulation floatation is 100 cubic metres, and the volume of biological contact oxidation pond is 200 cubic metres, and the volume of secondary sedimentation basins is 100 cubic metres.Be the 300-400 cubic meter and adopt the volume of at present general design biological contact oxidation pond, therefore, adopt sewage treatment process of the present utility model, can reduce the volume of biological contact oxidation pond, reduce construction investment.
The sewage pretreatment time is 7 hours, the coagulation air-float treatment time is 60 minutes, be filled with the medium-soft bat wool that accounts for whole biological contact oxidation pond volumetric spaces 70% in the biological contact oxidation pond, the biomass of biological bacteria biofilm is 220kg/m3, the treatment time of biological contact oxidation pond is 6 hours, other technical process are not being given unnecessary details with embodiment 1.Water-quality guideline after the processing sees Table 1.
Sewage quality and the utility model embodiment 1 ~ 2 handled the contrast of back water quality before table 1 was handled:
| Water-quality guideline | COD(mg/L) | BOD(mg/L) | SS(mg/L) | pH | NH 3-N |
| Before the processing | 2000 | 150 | 110 | 7.5 | 60 |
| |
100 | 10 | 5 | 7 | 5 |
| |
110 | 12 | 4 | 7.1 | 5 |
As can be seen from Table 1, the water quality of utilizing sewage treatment process of the present utility model to handle meets national GB8978-1996 " integrated wastewater discharge standard " primary standard, and is obvious to the organism treatment effect in the sewage.
Based on above-mentioned design, referring to Fig. 2 to Fig. 4, the utility model provides a kind of waste disposal plant, and described waste disposal plant comprises pretreatment unit 1, coagulation floatation 2, biological contact oxidation pond 3 and secondary sedimentation basins 4; Described coagulation floatation 2 comprises coagulation air-float separate tank pond body 21 and coagulation air-float device, be provided with filler 31 in the described biological contact oxidation pond 3, described pretreatment unit 1 is connected by lift pump 11 with described coagulation floatation 2, the water outlet of described coagulation floatation 2 is communicated with the water-in of described biological contact oxidation pond 3, and the water outlet of described biological contact oxidation pond 3 is communicated with the water-in of secondary sedimentation basins 4.Present embodiment is connected coagulation floatation with biological contact oxidation pond, the water of handling by coagulation air-float directly enters biological contact oxidation pond, the micro-nano bubble that utilizes coagulation air-float to handle in the sewage of back can be so that the organism in the sewage fully contacts with microorganism in the biological contact oxidation pond, simultaneously because the even diffusion of micro-nano bubble, make that oxygen is evenly distributed in the sewage in the biological contact oxidation pond, and micro-nano bobble rise velocity is slow, lift velocity is approximately 3 hours/meter, and micro-nano bubble volume is little, corresponding specific surface area is big, under the condition that guarantees same oxygen level, can reduce the aeration rate in the biological contact oxidation pond, save facility investment and running cost, and made the volume of biological contact oxidation pond reduce.Pretreatment unit in the present embodiment is grid.
Preferable, described waste disposal plant also comprises water collecting basin 5, described water collecting basin is used for collecting the sewage that needs processing.
Preferable, as a kind of embodiment, described air-floating apparatus is micro-nano bubble generator, described micro-nano bubble generator comprises pressure air-dissolving device and micro-nano bubble releasing device, described pressure air-dissolving device and micro-nano bubble releasing device are connected, described pressure air-dissolving device comprises water inlet pipe 22, pressurizing device, dissolved air water jar 23 and dissolved air water delivery line 24, described micro-nano bubble releasing device comprises micro-nano bubble generator 25, and described micro-nano bubble generator 25 is provided with jet hole; Described pretreatment unit 1 is connected by water inlet pipe 22 with described dissolved air water jar 23, described pressurizing device is connected with described dissolved air water jar 23, one end of described dissolved air water delivery line 24 is connected with described dissolved air water jar, the other end of described dissolved air water delivery line 24 is connected with described micro-nano bubble generator 25, and described micro-nano bubble generator 25 is arranged on the bottom of described coagulation floatation body 21.Coagulation air-float treatment scheme in the present embodiment is to be raised pump through the sewage that pretreatment unit is handled to promote when entering the dissolved air water jar, sewage generally is pressurized to 2 ~ 3 normal atmosphere, feed a certain amount of pressurized air by pressurizing device toward dissolved air water jar 23 simultaneously, sewage gas-vapor mix with certain pressure stays for some time in the dissolved air water jar, carry out the dissolving of air water mixing and air, jet hole by micro-nano bubble generator discharges micro-nano bubble and makes it enter coagulation floatation then, micro-nano bubble generator produces negative pressure simultaneously, in the process that these micro-nano bubbles rise with oil content, the fiber isodensity fully contacts with the small-particle that water approaches, rise to the water surface after the absorption, the formation foam also is separated, and water is separated thus.In the present embodiment, the diameter of the micro-nano bubble that produces is 1-50 μ m, the water that enters the dissolved air water jar is the water outlet after handling through waste disposal plant, the water yield that enters the dissolved air water jar accounts for whole coagulation floatation and handles 30% of the water yield, namely reflux ratio herein is 30%, and described water inlet pipe 22 is connected with the outlet pipeline of entire sewage treatment unit; Described micro-nano bubble generator is spherical.
Preferable, as a kind of embodiment, described pressurizing device is force (forcing) pump.
Preferable, as a kind of embodiment, described pressurizing device is gas self-straw 26 and water level sensor 27, and described gas self-straw 26 is arranged on the described water inlet pipe 22, and the gas self-straw is provided with gas self-priming amount and adjusts valve 261; Described water level sensor 27 is arranged on the inside of described dissolved air water jar 23, be used for controlling gas self-priming amount and adjust valve 261, make the water level in the dissolved air water jar 23 keep preset level, and the gas dissolving water of acquisition preset concentration, and then micro-nano bubble amount and concentration in the water inlet of adjusting biological contact oxidation pond.
More excellent, the pressure air-dissolving device of present embodiment also comprises pressure transmitter 28 and outlet valve 29, pressure transmitter 28 and outlet valve 29 are arranged on the dissolved air water delivery line 24, and near dissolved air water jar 23.In the present embodiment, by lift pump 11 sewage is sucked from pretreatment unit, the gas self-straw is negative pressure, thereby adjusts valve from air absorbing body by gas self-priming amount, can be to the pressure fluid of conveying gas-liquid mixed in the water inlet pipe; Detect the pressure of dissolved air water jar with pressure transmitter and regulate with outlet valve simultaneously, the pressure in the dissolved air water jar can be adjusted to preset value, adjust valve by water level sensor control self-priming amount, make the water level in the dissolved air water jar remain on preset level.
Preferable, as a kind of embodiment, described biological contact oxidation pond 3 comprises pond body 32 and filler 31, and described filler is the medium-soft bat wool, the volume of described filler 31 account for described pond body 32 volume 70% to 85%, be provided with shore pipe in the bottom of described pond body.
Preferable, as a kind of embodiment, the water outlet of described coagulation floatation is communicated with by the water-in of connecting pipeline with the bottom that is arranged on described biological contact oxidation pond.This is for micro-nano bubble is stirred more fully to the sewage in the biological contact oxidation pond.
Preferable, as a kind of embodiment, described air-floating apparatus arranges 2 micro-nano bubble releasing devices, and one of them micro-nano bubble generator 25 is arranged in the described coagulation floatation, and another micro-nano bubble generator 33 is arranged on the bottom of described biological contact oxidation pond.In the present embodiment, the micro-nano bubble releasing device of air-floating apparatus is separately positioned on coagulation floatation and biological contact oxidation pond, can avoids the problem of the aeration deficiency of biological contact oxidation pond like this.
Preferable, as a kind of embodiment, described coagulation floatation also is provided with gas floatation separation device, and described gas floatation separation device comprises slag scraper 201, and described slag scraper is arranged on the top of described coagulation floatation.Described gas floatation separation device is for the treatment of the scum silica frost that swims in sewage level.
At last, need to prove, in this patent document, the relational terms such as first, second grade only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have any relation or in proper order between these entities or the operation.And, in this patent document, term " comprises ", " comprising " or its any other variant, it is intended to contain and nonexcludability comprises, thereby make process, method, article or the equipment that comprises a series of key elements, not only comprise these key elements, but also comprise and clearly not listing and other key elements that those skilled in the art can know, perhaps also be included as the known requisite key element of these processes, method, article or equipment.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (6)
1. a waste disposal plant is characterized in that, described waste disposal plant comprises pretreatment unit, coagulation floatation, biological contact oxidation pond and secondary sedimentation basins;
Described coagulation floatation comprises coagulation air-float separate tank pond body and coagulation air-float device, be provided with filler in the described biological contact oxidation pond, described pretreatment unit is connected by lift pump with described coagulation floatation, the water outlet of described coagulation floatation is communicated with the water-in of described biological contact oxidation pond, and the water outlet of described biological contact oxidation pond is communicated with the water-in of secondary sedimentation basins.
2. waste disposal plant according to claim 1, it is characterized in that, described coagulation air-float device is micro-nano bubble generator, described micro-nano bubble generator comprises pressure air-dissolving device and micro-nano bubble releasing device, described pressure air-dissolving device and micro-nano bubble releasing device are connected, described pressure air-dissolving device comprises water inlet pipe, pressurizing device, dissolved air water jar and dissolved air water delivery line, described micro-nano bubble releasing device comprises micro-nano bubble generator, and described micro-nano bubble generator is provided with jet hole; Described pretreatment unit is connected by water inlet pipe with described dissolved air water jar, described pressurizing device is connected with described dissolved air water jar, one end of described dissolved air water delivery line is connected with described dissolved air water jar, the other end of described dissolved air water delivery line is connected with described micro-nano bubble generator, and described micro-nano bubble generator is arranged on the bottom of described coagulation floatation body.
3. waste disposal plant according to claim 1 is characterized in that, described biological contact oxidation pond comprises pond body and filler, and described filler is the medium-soft bat wool, the volume of described filler account for described pond body volume 70% to 85%.
4. waste disposal plant according to claim 1 is characterized in that, the water outlet of described coagulation floatation is communicated with by the water-in of connecting pipeline with the bottom that is arranged on described biological contact oxidation pond.
5. waste disposal plant according to claim 1, it is characterized in that, described air-floating apparatus arranges 2 micro-nano bubble releasing devices, one of them micro-nano bubble releasing device is arranged in the described coagulation floatation, and another micro-nano bubble releasing device is arranged on the bottom of described biological contact oxidation pond.
6. waste disposal plant according to claim 1 is characterized in that, described coagulation floatation also is provided with gas floatation separation device, and described gas floatation separation device comprises slag scraper, and described slag scraper is arranged on the top of described coagulation floatation.
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| CN 201220694642 CN203048732U (en) | 2012-12-14 | 2012-12-14 | Sewage treatment device |
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| CN 201220694642 CN203048732U (en) | 2012-12-14 | 2012-12-14 | Sewage treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043852A (en) * | 2012-12-14 | 2013-04-17 | 蓝星环境工程有限公司 | Wastewater treatment process and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043852A (en) * | 2012-12-14 | 2013-04-17 | 蓝星环境工程有限公司 | Wastewater treatment process and device |
| CN103043852B (en) * | 2012-12-14 | 2014-11-26 | 蓝星环境工程有限公司 | Wastewater treatment process and device |
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Effective date of registration: 20190124 Address after: No. 5 Xingye Street, Beijing Economic and Technological Development Zone, 100176 Patentee after: BLUESTAR (BEIJING) CHEMICAL MACHINERY Co.,Ltd. Address before: 100080 No. 62, West North Fourth Ring Road, Haidian District, Beijing Patentee before: Bluestar Environment Engineering Co.,Ltd. |
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Granted publication date: 20130710 |
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