CN104310584A - Aerobic granular sludge integrated sewage treating device and method - Google Patents
Aerobic granular sludge integrated sewage treating device and method Download PDFInfo
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- CN104310584A CN104310584A CN201410388471.4A CN201410388471A CN104310584A CN 104310584 A CN104310584 A CN 104310584A CN 201410388471 A CN201410388471 A CN 201410388471A CN 104310584 A CN104310584 A CN 104310584A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/341—Consortia of bacteria
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/004—Apparatus and plants for the biological treatment of water, waste water or sewage comprising a selector reactor for promoting floc-forming or other bacteria
Abstract
An aerobic granular sludge integrated sewage treating device is disclosed. The device comprises a water feeding pipe, aeration systems and a sludge discharging perforated pipe. The device also comprises a cylindrical tank body. The center of the cylindrical tank body is provided with a cone reaction drum. The periphery of the cone reaction drum is provided with cylindrical separation plates. The cone reaction drum is the first reaction chamber. The space between the cone reaction drum and the cylindrical separation plates is the second reaction chamber. The space between the cylindrical separation plates and the cylindrical tank body is the third reaction chamber. Each reaction chamber is provided with a plurality of layers of mesh plates which are arranged horizontally. The bottom of the cone reaction drum is provided with a water-gas mixing short pipe. The water-gas mixing short pipe is connected to a gas feeding pipe. The lower end of the water-gas mixing short pipe is provided with a frustum cone-like water feeding cavity. The outlet of the water feeing pipe is horizontally arranged, is in the frustum cone-like water feeding cavity, and is provided with a nozzle. The lower end of the cylindrical tank body is provided with a cone. The bottom of the cone is connected to the sludge discharging perforated pipe. The top edge of the inner wall of the cylindrical tank body is provided with a water discharging groove. The device has characteristics of simple configuration, construction convenience, small occupied space, convenient running, good quality of discharged water, low manufacturing cost, and low running cost.
Description
Technical field
The invention belongs to municipal sewage treatment and industrial waste water treatment, be specifically related to a kind of aerobic particle mud integrated sewage disposal facility, the invention still further relates to aerobic particle mud integral sewage disposal process.
Background technology
Though traditional activated sludge sewage disposal process is by domestic and international widespread use, but the biomass that this technique causes and bacterial population comparatively small amt, between its main bacteria seed, competition and contradiction are all existed to aspects such as the utilization of organic loading in sewage and carbon source and the demands in mud age, thus cause energy mutually suppress and disturb, have impact on decontamination effect improving.
In addition, all to there is technical process longer for traditional technology or strengthening traditional technology, purification structures and the problem such as sludge reflux facility is more, result in that operation energy consumption is higher, floor space is comparatively large and the problem such as management inconvenience.
The further reduction required with energy consumption index is improved constantly along with sewage discharge water quality standard, the domestic and international primary study to sewage disposal technology mainly concentrates following two aspects at present: one is under the prerequisite meeting further highly effective dephosphorizing denitrification requirement, reduce over many purification structures and mud, water backflow facility as far as possible, thus realize in process system, by optimization and the regulation and control of processing parameter, rational turnover stream mode, completes the task of wastewater efficient less energy-consumption dephosphorization denitrogenation.Accordingly, there is nitrated and synchronous short distance nitration technology, Denitrifying Phosphorus Removal Technology, nitrated denitrification dephosphorization technique etc. of phosphorus removal functional and become hot spot technology.Two is for overcoming the contradiction of all kinds of dominant bacteria on mud age and utilization of carbon source, simultaneously for increasing sludge microbe population and biomass in reaction tank and improving its mass transfer function, based on the composite bio-chemical technique of fixed biofilm body of laws and suspended active sludge, start research and development and application at sewage treatment area.
Summary of the invention
An object of the present invention is to provide a kind of aerobic particle mud integrated sewage disposal facility, and another object of the present invention is to provide a kind of aerobic particle mud integral sewage disposal process; To solve, the technical process that prior art exists is long, purification structures and sludge reflux facility is many, operation energy consumption is higher, floor space is comparatively large and the problem such as management inconvenience.
It is as follows that the present invention solves the technical scheme that above-mentioned first technical problem takes: a kind of aerobic particle mud integrated sewage disposal facility, comprise water inlet pipe, aerating system and spoil disposal perforated pipe, characterized by further comprising cylindrical pool body, cylindrical pool body center is provided with taper reaction tube, round shape dividing plate is arranged with outside taper reaction tube, taper reacting cylinder body is the first reaction chamber, space between taper reaction tube and round shape dividing plate is the second reaction chamber, and the space between round shape dividing plate and cylindrical pool body is the 3rd reaction chamber, first reaction chamber is provided with horizontally disposed reactive multilayer cylinder web plate, second reaction chamber is provided with horizontally disposed multilayer insulating panel web plate, 3rd reaction chamber is provided with horizontally disposed multilayer pond body web plate, below dividing plate web plate and pond body web plate, aerating system is set respectively, annular watering slot is provided with between round shape dividing plate bottom and cylindrical pool body, taper reaction tube bottom is provided with gas-vapor mix short tube, gas-vapor mix short tube is connected with inlet pipe, gas-vapor mix short tube lower end is provided with truncated cone-shaped intake antrum, water inlet pipe outlet is horizontally disposed with and is positioned at truncated cone-shaped intake antrum, water inlet pipe outlet is provided with nozzle, cylindrical pool body lower end is provided with cone, cone base is connected with spoil disposal perforated pipe, along being provided with effluent trough on cylindrical pool body inwall.
Sewage treatment facility of the present invention is the integrated biochemical device of a continuous flow, its three reaction chambers are concentric three annular cylindrical or cone body structure, have simple structure, constructability, occupation of land less, run the advantages such as convenient, effluent quality is good, cost is low and running cost is low.
The present invention solves the technical scheme that above-mentioned second technical problem takes: a kind of aerobic particle mud integral sewage disposal process, comprises the cultivation of active sludge inoculation and dominant bacteria before running and runs process continuously, it is characterized in that:
The first, the cultivation of active sludge inoculation and dominant bacteria before running
The cultivation of active sludge inoculation and dominant bacteria was completed, with the ammonia oxidation bacteria of two mud short distance nitration and Denitrifying Phosphate Accumulating Organisms (DPAO before biochemical device runs continuously
s) be dominant bacteria, in the incubation period, reactor aeration control is at 0.18 ~ 0.21m
3/ h; High loading inoculation is adopted to cultivate, vexed quick-fried 1 ~ 2 day, then continuum micromeehanics, continuous aeration, between MLSS in pond is close to design load 2.5 ~ 4.0g/L, when sludge index SVI is 70 ~ 100, settling ratio SV is 20 ~ 30%, namely cultivates successfully;
The second, run process continuously
Use facility to be the integrated sewage disposal facility of continuous water-in and water-out, water bottom cylindrical pool body in water inflow nozzle mode and make into water with suck air and mix mutually; Water inflow nozzle intake pressure controls at 2.5 ~ 3.0kg/cm
2, flooding quantity 0.1 ~ 0.2L/s, pool inner water stream flow velocity is 0.2 ~ 0.3m/s; When the sewage with certain pressure is with during at a high speed by water inflow nozzle, negative pressure will be formed around gas-vapor mix short tube, thus the active sludge 100 ~ 200% be several times as much as into water is refluxed, upwards flow into the first reaction chamber and by multiple-layer horizontal web plate, from up to down baffling enters the second reaction chamber, sufficient mud-water separation is for the first time carried out in two reaction chamber bottoms, isolated sludge part is refluxed by water inflow nozzle, excess sludge is deposited on the mud accumulation area of larger volume, gets rid of outside pond by spoil disposal perforated pipe; From the supernatant liquor of the second reaction chamber, enter the 3rd reaction chamber from bottom to top, sewage third time finally flows into water outlet water leg by multi-layered net plate; According to mechanism and the operating mode needs of biochemical wastewater treatment, by regulation and control air compressor machine aeration rate, in pond, realize the distribution of dissolved oxygen (DO) value in reaction tank needed for each reaction chamber biochemical reaction; Anaerobism is 0.01m
3/ h, being equivalent to DO is 0.1mg/L, and oxygen deficit is 0.05m
3/ h, suitable DO are 0.5mg/L, and aerobic is 0.2 ~ 0.3m
3/ h, suitable DO are 2 ~ 3mg/L.
The present invention take aerobic particle mud as purification main body, the heterogeneous composite purification mode combined with three of granule sludge, microbial film and active sludge, have employed two film, two mud synchronously digests dephosphorization denitrogenation integrated a kind of Novel sewage purification structures.
The present invention is according to improving Flocculation Kinetics, create hydraulics and fluidised form environment that favourable granule sludge formed fast, start with from the aspect such as configuration and flow cavitation result of optimizing operation operating mode and reactor, create out granule sludge while less energy-consumption, being formed fast, reacting appliance is for function that is synchronous, short distance nitration dephosphorization denitrogenation.Nitrifier is separately existed in two film independent of denitrifying bacteria, thus realizes the effective utilization to carbon source, solve the difficult problem that multi-cultur es disturbs denitrification functions the contradiction in mud age and returned sluge.
Domestic and international above-mentioned sewage disposal technology, because himself technology such as energy consumption and operation stability is still unresolved, is also in the shop experiment stage at present.The technology of the present invention, emphasis solves the above-mentioned key affecting this technology industrialization and promote, and this new technology is applied as early as possible in production practice, is hereby described below:
1, the cultivation of microorganism dominant population
Granule sludge is microorganism under the effect of certain hydraulics and shearing force, by secretion extracellular polymeric coalescent and have that sedimentation is fast, biomass is high, the closely knit three-dimensional structure spheroid of strong shock resistance.Be distributed in regularly in the specific microenvironment of the most applicable growth according to the demand of own growth by each bacterioid of enrichment.Also due to the multi-cultur es structure of aerobic particle mud, and the resistance to mass transfer of matrix and oxygen increases with the increase of granularity, the voidage of particle also reduces along with the degree of depth of particle, thus multiple microenvironment is defined in aerobic particle mud inside, can meet purify waste water required aerobic, anoxic and anaerobic condition.Meanwhile, aerobic particle mud is to the removal of phosphorus, and except traditional biological phosphate-eliminating, some is because phosphorus is removed in the chemical precipitation of granule sludge inside.
Facility of the present invention is the integrated biochemical device of a continuous flow, according to the mechanism of biochemical wastewater treatment, is 0.01m by regulation and control air compressor machine air capacity anaerobic zone that is distributed as of aeration rate in pond
3/ h, suitable DO are 0.1mg/L, and oxygen-starved area is 0.05m
3/ h, suitable DO are 0.5mg/L, and aerobic zone is 0.2 ~ 0.3m
3/ h, suitable DO are 2 ~ 3mg/L.The cultivation of active sludge inoculation and dominant bacteria should be completed, due to ammonia oxidation bacteria and the Denitrifying Phosphate Accumulating Organisms (DPAO of two mud short distance nitration before this biochemical device runs continuously
s) be dominant bacteria, in the incubation period, reactor bottom aeration zone aeration control is at 0.18 ~ 0.21m
3/ h.High loading can be adopted to inoculate cultivate, vexed quick-fried 1 ~ 2 day, then continuum micromeehanics, continuous aeration, between MLSS in pond is close to design load 2.5 ~ 4.0g/L, when sludge index SVI is 70 ~ 100, settling ratio SV was 20 ~ 30%, namely cultivates successfully.
Because facility of the present invention is water running of being back to back, intake with an inverted conical body, water from bottom in nozzle mode and make into water with suction air mix mutually.Nozzle intake pressure controls at 2.5 ~ 3.0kg/cm
2, flooding quantity 0.1 ~ 0.2L/s, pool inner water stream flow velocity is 0.2 ~ 0.3m/s.
When the sewage with certain pressure is with during at a high speed by water inflow nozzle, will negative pressure be formed around gas-vapor mix short tube, thus the active sludge 100 ~ 200% be several times as much as into water will be refluxed.
The be in operation regulator control system of dissolved oxygen DO of biochemical device has come by regulating the air input of air compressor machine and air intake pipe, and facility of the present invention takes full advantage of nozzle getter device, thus saves the load of air compressor machine.
Aerobic particle mud of the present invention forms producer fast just from cultivation dominant bacteria, and improve water environment and hydraulics, starting with in the aspects such as optimizing operation operating mode and state modulator, creates favorable conditions for less energy-consumption forms aerobic particle mud fast.
2, the dynamic conditions of biofloculation
In sewage, microbial cells by contacting with each other, colliding under particular water environment, can generate flco and form Granular sludge further.The present invention ties up to inventor and researches and develops for many years on the basis of achievement, on the vertical water-carrying section of reactor, installs layer flexible web plate, is crossing the microvovtex body of turbulization fluidised form in net current.Microorganism, under the promotion of volution energy, contacts with each other collision.Microorganism after contact is linked to be nascent flco by Extracellular polymers glue and under eddy current flow field action after web plate, constantly grows up and become large, finally form granule sludge.And bacterial classification is cultivated in the optimization in the process in sewage, as ammonia nitrifier, Denitrifying Phosphate Accumulating Organisms etc. very easily connect to particulate state.Meanwhile, cross net current and form strengthening and equally distributed shearing stress, primary particles mud more can be impelled to compress further with closely knit.
In addition, the recombining process with the combination of fixed biofilm, granule sludge and suspended active mud three formed in this reactor, at controllable aeration rate with under the condition changing dissolution of contaminated water oxygen, not only can improve its operation condition; As: anaerobism, anoxic are become reconciled oxygen condition, and also can impel wriggling and the bubble cutting of gas, liquid, carrier three-phase further, this not only directly increases the utilization ratio of oxygen, has saved energy consumption.Simultaneously also because biomembranous constantly long-pending the folding of carrier surface impels mesh flow section to reduce gradually, overcurrent flow velocity strengthens, and section flow shear strengthens.Further enhance the continuous vibrations of flexible nettle, after microbial film constantly comes off from network, constitute the cohesion core of granule sludge, impel the benign cycle of newborn aerobic particle mud increasing fast.
3, reactor Inlet and outlet water mode
Novel high-efficiency biochemical reactor of the present invention is round organic structures, as shown in Figure 1: sewage autoreactor centre bottom enters the first reaction chamber with form of nozzle upward flow, in this controllable aeration rate and suction air capacity, complete the first step of the biochemical sewage DO demand of different operating mode.First reaction chamber upward flow enters the second reaction chamber by multi-layered net plate, and current flow velocity after the second reaction chamber passes through web plate slows down gradually, completes first time mud-water separation.Sewage by base circle watering slot to entering again by web plate after the 3rd larger reaction chamber of volume, after purification, sewage autoreactor upper end goes out stream through annular collecting vat.
The technical characterstic of this reactor, be also that three reaction chambers are all located in same structures, achieve muddy water closed circulation in pond, thus avoid in conventional purge technique, returned sluge pressure transport system is to the destruction of granule sludge.Meanwhile, prevent again in traditional technology because returned sluge is by a large amount of NH
3-N brings anoxic pond into and affects the adverse consequences of water outlet ammonia nitrogen concentration.Due to the effect of vertical overcurrent flexible mesh, grid level surface produces stansverse hunting power, and the space three-dimensional further enhancing nettle swings, and is more of value to biomembranous renewal, accelerates coming off and the quick formation of granule sludge of film.
4, two film, two mud internal reflux integration dephosphorization denitrogenation technology
As mentioned above, due to this structure of reactor and installation feature, determine the possibility that simultaneously can complete simultaneous nitrification and denitrification dephosphorization denitrogenation in single pond.Simultaneously owing to there are two membrane process features that fixed biofilm on web plate and granule sludge flowing microbial film combine, impel nitrifier independent of in the above-mentioned two kinds of biofilm carriers of Denitrifying Phosphate Accumulating Organisms Individual existence, thus the effective utilization achieved organic carbon source in sewage, solve the contradictory problems in denitrifying bacteria mud age of nitrifier.Due in same reactor, the internal recycle automatic back flow of mud and supernatant liquor can be realized.Reactor better completes the short-cut nitrification and denitrification dephosphorization denitrogenation of two sludge system, achieves saving carbon source, reduces energy consumption, shortens the advantageous effect such as hydraulic detention time and high-efficient purification.
5, water intake mode
The water intake mode of reactor directly affects the vital movement of microorganism, to be also related to that can excellent species obtain protectiveness and cultivate.Larger at water entry organic concentration, polyP bacteria can under the first reaction chamber anaerobic environment, by in sewage easily degraded organic matter transformation be poly-β hydroxybutyric acid fat (PHB), and later under the aerobic or anoxia condition of second and third reaction chamber decomposed P HB strengthen metabolism, thus form dominant population.Meanwhile, other competitive heterotrophic bacteriums, comprise thread fungus and are then in a disadvantageous position, and control its propagation development, thus improve the settling property of granule sludge, increase the volume exchange ratio of this reactor.
Performance analysis of the present invention is as follows:
The first, in the reactor add the effect that flexible web plate itself has wriggling biofilm carrier, the fast and stable enhancing again granule sludge is formed.Achieve microbial film, biochemical wastewater treatment advantage that aerobic particle mud is combined with active sludge three.Under the fixed biologically carrier of swing and the acting in conjunction of granule sludge flowing bio-carrier, gas, liquid, film is made to obtain abundant blending contact and exchange, except there are in reactor anaerobism, aerobic favourable various dominant bacteria growing environments, microbial film, granule sludge itself also has the change from surface to internal layer microenvironment, thus ensure that various optimization microorganism species selects the breeding of ground and existence.Dominant bacteria in reactor, also maintains good activity and the mutability in space.And in operational process, gas, under the drive of sewage triflux, collides with each other and is in wriggling state, constantly cut into little bubble by granule sludge, add the utilization ratio of oxygen, decrease aeration rate, reach energy-conservation object.
In addition, form the water environment being in same order of magnitude yardstick whirlpool body with granule sludge after web plate simulation net, accelerate the quick formation of granule sludge further.Also provide enhanced the novel process that microbial film realizes the two kinds of dominant bacterias self-existent pair of film, the denitrogenation of two mud synchronous nitration and denitrification dephosphorization in same reactor in biochemical wastewater treatment simultaneously.
The second, analyze from biochemical wastewater treatment technical development, the focus technology content of current research, still concentrate on how under the prerequisite improving purification efficiency, accomplish as far as possible to reduce aeration and the energy spent by backflow, reach the low and various flora of sludge yield independently cultivate and react, and realize short route and manageable object.Integrated double-film of the present invention, two mud biochemical reactor, just because of the optimization design to its structure and fluidised form, had the feature of high effect culture aerobic particle mud and run by regulation and control, realizing the sharpest edges of " two mud " and " carbon is dual-purpose ".
Reactor by the effect of water inflow nozzle, also can will contain Denitrifying Phosphate Accumulating Organisms (DPAO from second and third reaction chamber
s) returned sluge return the first reaction chamber, utilize Denitrifying Phosphate Accumulating Organisms to carry out denitrogenation dephosphorizing.The present invention not only saves the intermediate sedimentation pond of traditional technology, still remains two mud characteristics and advantages.The organic composite of microbial film and granule sludge, increases microbial population and biomass, improves wastewater purification efficiency, shorten hydraulic detention time, does not need separately to build second pond.Compared with traditional waste water treatment process, in saturation dissolved oxygen lower (as 40 ~ 60%) situation, still can form the synchronous nitration and denitrification dephosphorization denitrogenation of granule sludge smoothly, thus can carbon source be saved, reduce energy consumption 10 ~ 20%, Economization on land area occupied 20 ~ 30%, reduces construction costs 10 ~ 20%.
Accompanying drawing explanation
Fig. 1 is the structural representation of aerobic particle mud integrated sewage disposal facility,
Fig. 2 is the vertical view of Fig. 1.
In figure: 1-cylindrical pool body, 2-taper reaction tube, 3-round shape dividing plate, the 4-the first reaction chamber, 5-the second reaction chamber, the 6-the three reaction chamber, 7-reaction tube web plate, 8-aerating system, 9-water inlet pipe, 10-water inflow nozzle, 11-gas-vapor mix short tube, 12-inlet pipe, 13-cone mud accumulation area, 14-spoil disposal perforated pipe, 15-effluent trough, 16-dividing plate web plate, 17-pond body web plate, 18-annular watering slot, 19-truncated cone-shaped intake antrum.
Embodiment
Facility embodiment, as shown in Figures 1 and 2: a kind of aerobic particle mud integrated sewage disposal facility, comprise water inlet pipe 9, aerating system 8 and spoil disposal perforated pipe 14, also comprise cylindrical pool body 1, cylindrical pool body center is provided with taper reaction tube 2, round shape dividing plate 3 is arranged with outside taper reaction tube 2, whole pond is divided into three reaction zones, taper reacting cylinder body 2 is the first reaction chamber 4, space between taper reaction tube 2 and round shape dividing plate 3 is the second reaction chamber 5, and the space between round shape dividing plate 3 and cylindrical pool body 1 is the 3rd reaction chamber 6, horizontally disposed reactive multilayer cylinder web plate 7 is provided with in taper reaction tube 2, second reaction chamber 5 is provided with horizontally disposed multilayer insulating panel web plate 16, 3rd reaction chamber 6 is provided with horizontally disposed multilayer pond body web plate 17, dividing plate web plate 16 arranges aerating system 8 below respectively with pond body web plate 17, annular watering slot 18 is provided with between round shape dividing plate 3 bottom and cylindrical pool body 1, taper reaction tube 2 bottom is provided with gas-vapor mix short tube 11, gas-vapor mix short tube 11 is connected with inlet pipe 12, gas-vapor mix short tube 11 lower end is provided with truncated cone-shaped intake antrum 19, the outlet of water inlet pipe 9 is horizontally disposed with and is positioned at truncated cone-shaped intake antrum 19, water inlet pipe 9 outlet is provided with water inflow nozzle 10, cylindrical pool body 1 lower end is provided with cone mud accumulation area 13, be connected with spoil disposal perforated pipe 14 bottom cone mud accumulation area 13, along being provided with effluent trough 15 on cylindrical pool body 1 inwall.
According to obtaining research trial Analysis on Results, the volumetric ratio V1:V2:V3 ≈ 1:3:7 of each reaction chamber of reactor is advisable, i.e. the first reaction chamber: the second reaction chamber: the volumetric ratio of the 3rd reaction chamber is 1:3:7.The mesh area of overcurrent web plate is 100 × 100mm
2, the overcurrent web plate mesh length of side is 5 ~ 7 with the nettle diameter ratio of making web plate, and web plate spacing is that 100 ~ 200mm is advisable.
Sewage treatment facility of the present invention all installs horizontal multilayer overcurrent web plate in each reaction chamber, and aerating system 8 is installed in the second reaction chamber 5 and the 3rd reaction chamber 6 bottom.Sewage enters gas-vapor mix short tube 11 by bottom water inlet pipe 9 by outlet water inflow nozzle 10 upwards, gas-vapor mix short tube sucks air by inlet pipe 12 simultaneously, mix with sewage upwards to flow into and enter the first reaction chamber and by multiple-layer horizontal reaction tube web plate 7, from up to down baffling enters the second reaction chamber.Because the second reaction chamber water-carrying section strengthens gradually, flow velocity reduces from top to bottom gradually, same by after multiple-layer horizontal dividing plate web plate 16, carries out fully mud-water separation for the first time in the second reaction chamber bottom.Isolated sludge part is refluxed by water inflow nozzle, and excess sludge is deposited on the taper mud accumulation area 13 of larger volume, and gets rid of outside pond by sludge drainage system 14.From the supernatant liquor of the second reaction chamber, enter the 3rd reaction chamber from bottom to top, sewage third time finally flows into water outlet water leg 15 by multilayer pond body web plate 17.
After sewage enters at the bottom of pond, utilize base sludge concentration high, the feature that biomass is large and sewage substrate is nutritious is optimized, the preliminary election of flora.In water inlet latter first hour, do not carry out aeration, make inhalant region be in anaerobic state.Breed rapidly at optimize microbial groups such as this polyP bacterias, for the formation of follow-up biochemical reaction and granule sludge provides biological guarantee.
In reactor, the multi-layered net plate of installing is the good carrier of attached growth of microorganisms; along with biomembranous continuous propagation development; the water-carrying section of mesh constantly diminishes; the shearing force crossing net current constantly increases; simultaneously microbial film is under the combined action of shearing force and nettle vibration; constantly peel off and enter water body, become the cohesion core of active sludge granulation.Meanwhile, web plate can also make net current produce intensive whirlpool.Make turbulence vortex body scale size be in the same order of magnitude with the mud granule yardstick formed gradually due to web plate choose the design parameter, and the collision of whirlpool body is little vortex to be driven and is formed, thus improve the probability of the further contact-impact of granule sludge wadding aggressiveness, impel aerobic particle mud to be formed fast.
Embodiment of the method 1, a kind of aerobic particle mud integral sewage disposal process, comprises the cultivation of active sludge inoculation and dominant bacteria before running and runs process continuously;
The first, the cultivation of active sludge inoculation and dominant bacteria before running
The cultivation of active sludge inoculation and dominant bacteria was completed, with the ammonia oxidation bacteria of two mud short distance nitration and Denitrifying Phosphate Accumulating Organisms (DPAO before biochemical device runs continuously
s) be dominant bacteria, in the incubation period, reactor aeration control is at 0.21m
3/ h; High loading inoculation is adopted to cultivate, vexed quick-fried 36 hours, then continuum micromeehanics, continuous aeration, when MLSS in pond is close to about 3.5g/L, when sludge index SVI is about 90, settling ratio SV is 28%, namely cultivates successfully;
The second, run process continuously
Water enters taper reacting cylinder body from water inflow nozzle and makes to mix mutually with suction air into water bottom cylindrical pool body; Water inflow nozzle intake pressure controls at 2.5kg/cm
2, flooding quantity 0.16L/s, pool inner water stream flow velocity is 0.27m/s; When the sewage with certain pressure is with during at a high speed by water inflow nozzle, negative pressure is formed at gas-vapor mix short tube, thus the active sludge 160% be several times as much as into water is refluxed, upwards flow into the first reaction chamber and by multiple-layer horizontal web plate, from up to down baffling enters the second reaction chamber, and carry out fully mud-water separation for the first time in two reaction chamber bottoms, isolated sludge part is refluxed by water inflow nozzle, excess sludge is deposited on the mud accumulation area of larger volume, gets rid of outside pond by spoil disposal perforated pipe; From the supernatant liquor of the second reaction chamber, enter the 3rd reaction chamber from bottom to top, sewage third time finally flows into water outlet water leg by multi-layered net plate; According to mechanism and the operating mode needs of biochemical wastewater treatment, by regulation and control air compressor machine aeration rate, in pond, realize the distribution of dissolved oxygen (DO) value in reaction tank needed for each reaction chamber biochemical reaction; Anaerobism is 0.01m
3/ h, being equivalent to DO is 0.1mg/L, and oxygen deficit is 0.05m
3/ h, suitable DO are 0.5mg/L, and aerobic is 0.2 ~ 0.3m
3/ h, suitable DO are 2 ~ 3mg/L.
Embodiment of the method 2, the first, the cultivation of active sludge inoculation and dominant bacteria before running
The cultivation of active sludge inoculation and dominant bacteria was completed, with the ammonia oxidation bacteria of two mud short distance nitration and Denitrifying Phosphate Accumulating Organisms (DPAO before biochemical device runs continuously
s) be dominant bacteria, in the incubation period, reactor aeration control is at 0.21m
3/ h; High loading inoculation is adopted to cultivate, vexed quick-fried 48 hours, then continuum micromeehanics, continuous aeration, when MLSS in pond is close to about 4.0g/L, when sludge index SVI is about 80, settling ratio SV is 26%, namely cultivates successfully;
The second, run process continuously, with embodiment 1.
Claims (5)
1. an aerobic particle mud integrated sewage disposal facility, comprise water inlet pipe, aerating system and spoil disposal perforated pipe, it is characterized in that: also comprise cylindrical pool body (1), cylindrical pool body (1) center is provided with taper reaction tube (2), round shape dividing plate (3) is arranged with outside taper reaction tube (2), taper reacting cylinder body (2) is the first reaction chamber (4), space between taper reaction tube (2) and round shape dividing plate (3) is the second reaction chamber (5), and the space between round shape dividing plate (3) and cylindrical pool body (1) is the 3rd reaction chamber (6), horizontally disposed reactive multilayer cylinder web plate (7) is provided with in taper reaction tube (2), second reaction chamber (5) is provided with horizontally disposed multilayer insulating panel web plate (16), 3rd reaction chamber (6) is provided with horizontally disposed multilayer pond body web plate (17), dividing plate web plate (16) arranges aerating system (8) below respectively with pond body web plate (17), annular watering slot (18) is provided with between round shape dividing plate (3) bottom and cylindrical pool body (1), taper reaction tube (2) bottom is provided with gas-vapor mix short tube (11), gas-vapor mix short tube (11) is connected with inlet pipe (12), gas-vapor mix short tube (11) lower end is provided with truncated cone-shaped intake antrum (19), the outlet of water inlet pipe (9) is horizontally disposed with and is positioned at truncated cone-shaped intake antrum (19), water inlet pipe (9) outlet is provided with water inflow nozzle (10), cylindrical pool body (1) lower end is provided with cone mud accumulation area (13), bottom, cone mud accumulation area (13) is connected with spoil disposal perforated pipe (14), along being provided with effluent trough (15) on cylindrical pool body (1) inwall.
2. a kind of aerobic particle mud integrated sewage disposal facility as claimed in claim 1, is characterized in that: the first reaction chamber (4): the second reaction chamber (5): the volumetric ratio of the 3rd reaction chamber (6) is 1:3:7.
3. a kind of aerobic particle mud integrated sewage disposal facility as claimed in claim 1 or 2, is characterized in that: reaction tube web plate (7), multilayer insulating panel web plate (16) are 100 × 100mm with the mesh area in pond body web plate (17)
2.
4. a kind of aerobic particle mud integrated sewage disposal facility as claimed in claim 3, is characterized in that: the overcurrent web plate mesh length of side is 5 ~ 7 with the nettle diameter ratio of making web plate, and web plate spacing is 100 ~ 200mm.
5. an aerobic particle mud integral sewage disposal process, comprises the cultivation of active sludge inoculation and dominant bacteria before running and runs process continuously, it is characterized in that:
The first, the cultivation of active sludge inoculation and dominant bacteria before running
The cultivation of active sludge inoculation and dominant bacteria was completed, with the ammonia oxidation bacteria of two mud short distance nitration and Denitrifying Phosphate Accumulating Organisms (DPAO before biochemical device runs continuously
s) be dominant bacteria, in the incubation period, reactor aeration control is at 0.18 ~ 0.21m
3/ h; High loading inoculation is adopted to cultivate, vexed quick-fried 1 ~ 2 day, then continuum micromeehanics, continuous aeration, between MLSS in pond is close to design load 2.5 ~ 4.0g/L, when sludge index SVI is 70 ~ 100, settling ratio SV is 20 ~ 30%, namely cultivates successfully;
The second, run process continuously
Use facility to be the integrated sewage disposal facility of continuous water-in and water-out, water bottom cylindrical pool body in water inflow nozzle mode and make into water with suck air and mix mutually; Water inflow nozzle intake pressure controls at 2.5 ~ 3.0kg/cm
2, flooding quantity 0.1 ~ 0.2L/s, pool inner water stream flow velocity is 0.2 ~ 0.3m/s; When the sewage with certain pressure is with during at a high speed by water inflow nozzle, negative pressure will be formed around gas-vapor mix short tube, thus the active sludge 100 ~ 200% be several times as much as into water is refluxed, upwards flow into the first reaction chamber and by multiple-layer horizontal web plate, from up to down baffling enters the second reaction chamber, sufficient mud-water separation is for the first time carried out in two reaction chamber bottoms, isolated sludge part is refluxed by water inflow nozzle, excess sludge is deposited on the mud accumulation area of larger volume, gets rid of outside pond by spoil disposal perforated pipe; From the supernatant liquor of the second reaction chamber, enter the 3rd reaction chamber from bottom to top, sewage third time finally flows into water outlet water leg by multi-layered net plate; According to mechanism and the operating mode needs of biochemical wastewater treatment, by regulation and control air compressor machine aeration rate, in pond, realize the distribution of dissolved oxygen (DO) value in reaction tank needed for each reaction chamber biochemical reaction; Anaerobism is 0.01m
3/ h, being equivalent to DO is 0.1mg/L, and oxygen deficit is 0.05m
3/ h, suitable DO are 0.5mg/L, and aerobic is 0.2 ~ 0.3m
3/ h, suitable DO are 2 ~ 3mg/L.
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