CN1283564C - Alternation internal circulation aerobe reactor - Google Patents
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- CN1283564C CN1283564C CN 200410009048 CN200410009048A CN1283564C CN 1283564 C CN1283564 C CN 1283564C CN 200410009048 CN200410009048 CN 200410009048 CN 200410009048 A CN200410009048 A CN 200410009048A CN 1283564 C CN1283564 C CN 1283564C
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Abstract
The present invention relates to a device for treating urban domestic sewage, particularly to an alternation internal circulation aerobe reactor fr treating sewage, which comprises aerobe reaction tanks, communicating holes among the aerobe reaction tanks, wherein each of the aerobe reaction tanks is provided with a water inlet pipe, and two side tanks are provided with water discharging weirs and water discharging pipes. The present invention is characterized in that four aerobe aerobiont reaction tanks are arranged; number 1 to 4 reaction tanks are orderly arranged from left to right; each reaction tank forms a sliver shape; the four reaction tanks are arranged side by side; the reaction tank which are positioned on both sides are provided with water inlet pipes, water discharging weirs and water outlet pipes; the reaction tanks which are positioned in the middle are only provided with water inlet pipes; the communicating holes and reflux pumps are arranged among the reaction tanks; the reaction tanks on both of the two sides are alternatively used as an aeration tank and a precipitation tank; the two middle reaction tanks are used as aeration tanks all the time. The reactor integrates the functions of an aerating system and a precipitation system; the concentration of sludge is uniform; the utilization rate of the volume of the ponds and the treatment efficiency are raised, and the treatment cost is reduced.
Description
Technical field
The present invention relates to a kind of device that city domestic sewage is handled that is used for; Especially the alternative expression internal recycle aerobe reactor that sewage is handled.
Background technology
The main flow technology that municipal sewage treatment is at present generally adopted has traditional activated sludge process, oxidation ditch process and SBR technology etc.
Activated sludge process is as a kind of aerobic biochemical treatment technology of being most widely used, is one of the most stable so far the most sophisticated technology of sewage disposal technology development.It mainly is made up of aeration tank and second pond, adopts micro-pore aeration, the coefficient of oxygen utilization height, and main characteristics is that technology stability height, capacity of resisting impact load are strong.But owing to adopt traditional technical process, pre-treatment-preliminary sedimentation tank-aeration tank-second pond just unavoidably has initial cost and the high shortcoming of operation processing costs.
Oxidation ditch process is a kind of underload, extended aeration system, by the circulation hydraulic flow feature, has improved capacity of resisting impact load.But it adopts aerators such as aeration rotary brush, and coefficient of oxygen utilization is relatively low, and the extended aeration mode increases the pond appearance and the residence time simultaneously, has further improved operation energy consumption.In order to reduce cost of investment, three channel type oxidation channel technologies of Denmark Kruge company exploitation, the oxidation ditch state conversion on space-time that utilizes three waterpower arranged side by side to communicate is exactly omitted second pond and has been saved certain investment.The operation operation principle of three ditch oxidation ditches is seen Fig. 1, and during this oxidation ditch operation, alternately as settling tank, aeration tank, aeration is then kept in intermediary II pond always for the I of both sides, III two ponds.I pond, II pond or III pond are alternately introduced in water inlet, water outlet alternately from the I pond or the III pond draw.Three channel type oxidation channel technologies generally are divided into four-stage.(arrow a represents water inlet among Fig. 1, and arrow b represents water outlet)
Stage A: sewage enters the I pond, and clarification and effluent flows out from the III pond.I pond and II pond have been oxygen condition, carry out organic Degradation, and the III pond is as settling tank.
Stage B: be transition state, sewage enters the II pond, and water outlet is still flowed out from the III pond, and I pond commentaries on classics this moment brush shuts down, and changes the quiescent setting state into, and the II pond is still moved under aerobic condition, and the III pond is still as settling tank.
Stage C: sewage enters the III pond, and water outlet is flowed out through the I pond.This moment, III pond and II pond were in oxygen condition, the aeration rotary brush running, and the I pond is as settling tank.Similar with the working order of stage A.
Stage D: similar with the stage B working order, be transition state.Sewage is introduced the II pond, and water outlet is flowed out through the I pond.The III pond is in the quiescent setting state at this moment, and the I pond is still as settling tank.
Like this, four operation stages of three channel type oxidation channels go round and begin again, and alternative expression is disposed of sewage continuously.But after long-play changes, the fatal scarce limit of its existence will come out gradually, the sludge concentration distribution that is I, II and III pond differs widely, and the sludge concentration that shows as I pond and III pond will be far longer than the II pond, and this will cause the volume of system and plant factor to reduce greatly.
Sequencing batch reactor (SBR) has the processing efficiency height, moves convenient and flexible characteristics.Classical SBR technology investment is minimum, the operation flexible and convenient, but the intermittent operation mode can not satisfy and disposes of sewage continuously and requirement.Intermittent cycle extended aeration activated sludge process (ICEAS technology) and circulating type active sludge method (cyclic activated sludge system) reach processed continuously needs by set up biological selecting area or pre-reaction zone at front end, but their more employing extended aeration modes have just been lost SBR technology characteristic efficiently.Aerobic basin-placed in-line technology in intermittent aeration pond (DAT-IAT technology) becomes a successive activated sludge tank with pre-reaction zone, further improves capacity utilization.Modified version SBR subsequently (claiming MSBR again) and alternative expression technology UNITANK have enlarged continuous reaction district volume, adopt the mode of alternative expression operation, reach the purpose of disposing of sewage continuously, this has also increased the mud skewness problem between each pond continuing to increase capacity utilization simultaneously.
Activated sludge process and oxidation ditch process all have investment and the high shortcoming of working cost, in capital construction, omitted second pond and improve SBR technology, but it must have the corresponding time to carry out precipitated outlet water, three channel type oxidation channels of alternative expression operation afterwards and improvement SBR technology reach the water purpose of being back to back by conversion work state on time or space, but the mode that the operation of this alternative expression is changeed has increased system sludge concentration distribution non-uniformity problem.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the objective of the invention is in order to solve the urban sewage treatment technology investment high, the shortcoming that working cost is high, pool-type structure, auxiliary facility and drive manner thereof to existing alternative expression operation process are studied, overcome the sludge concentration skewness of alternative expression technology, shortcomings such as volume and plant factor are low improve sewage treating efficiency.
The technical scheme that realizes above-mentioned purpose is: a kind of alternative expression internal recycle aerobe reactor, comprise that communicating aperture, each reaction tank between aerobe reaction tank, each reaction tank is provided with water inlet pipe and the dual-side pond is provided with effluent weir and rising pipe, it is characterized in that:
The quantity of described aerobe reaction tank is 4, is No. 1 reaction tank, No. 2 reaction tanks, No. 3 reaction tanks and No. 4 reaction tanks from left to right successively, each aerobe reaction tank be shaped as long strip shape, 4 aerobe reaction tanks are arranged side by side;
No. 1 reaction tank and No. 4 reaction tanks of being positioned at both sides are provided with water inlet pipe 12 and 15, effluent weir 17 and 18, rising pipe 11 and 16, are positioned at No. 2 reaction tanks of intermediary and No. 3 reaction tanks and only are provided with water inlet pipe 13 and 14;
Between No. 1 reaction tank and No. 2 reaction tanks and the far-end that is positioned at water inlet pipe between No. 3 reaction tanks and No. 4 reaction tanks be provided with communicating aperture 8 and communicating aperture 10, the near-end that is positioned at water inlet pipe between No. 2 reaction tanks and No. 3 reaction tanks is provided with communicating aperture 9;
Between No. 1 reaction tank and No. 2 reaction tanks and the near-end that is positioned at water inlet pipe between No. 3 reaction tanks and No. 4 reaction tanks be provided with unidirectional reflux pump 5 and unidirectional reflux pump 7, current can only be flowed to the avris reaction tank by the intermediate reaction pond; The far-end that is positioned at water inlet pipe between No. 2 reaction tanks and No. 3 reaction tanks is provided with bidirectional-reflux pump 6, and current can flow between No. 2 reaction tanks and No. 3 reaction tanks back and forth;
The reaction tank of both sides alternately uses as aeration tank and settling tank, and middle two reaction tanks use as the aeration tank all the time.
The invention has the beneficial effects as follows that this aerobe reactor integrates aerating system and settling system, has saved floor space, reduced the investment capital cost.The internal reflux system that is adopted improves utilization rate of tank volume, has improved processing efficiency, has reduced processing costs.The stability of operation and reliability increase, and effluent quality can reach national grade one discharge standard.Integrated, the blocking of structures, extensibility is stronger.
Description of drawings
Fig. 1 is existing three channel type oxidation channel operation logic figure
Fig. 2 is a two dimensional structure synoptic diagram of the present invention
Fig. 3 is operation logic figure of the present invention
Fig. 4 is a denitrogenation schematic diagram of the present invention
Fig. 5 is a denitrogenation dephosphorizing schematic diagram of the present invention
Fig. 6 is each reaction tank sludge concentration distribution plan in the one-period
Embodiment
The present invention is described further below in conjunction with accompanying drawing and example.
The structure of this reactor, is no longer described at this because previous technique scheme part explains to its structure referring to Fig. 2.
Sewage enters the pump well pump house at first through grid, settling pit, enters the aerobic treatment system after the lifting, and the aerobic treatment system is made up of the long strip shape pond of 1,2,3 and No. 4 four equal ponds appearance.Alternately use as aeration tank and settling tank in No. 1 and No. 4 ponds, and No. 2 and No. 3 ponds are always the aeration state, and each pond is equipped with water inlet pipe 12-15, and water outlet is hocketed by 1, No. 4 pond.5,6 and 7 three places are equipped with the internal reflux pump among Fig. 2, can the mixed solution between adjacent two ponds be refluxed, and form round-robin waterpower fluidised form.
See also Fig. 3, standard operational mode of the present invention is divided into four-stage-A, B, C and D.
Stage A (Fig. 3 A): 1,2 and No. 3 ponds are the aeration state, and aerator begins aeration in the pond, and No. 4 the pond is the precipitation state, and aerator stops aeration.No. 1 the pond inlet valve is opened, and No. 4 the pond flowing water Valve is opened. Backflow water pump 5,6 is opened among the figure.
Sewage at first enters from No. 1 pond, and along with the pushing effect of water inlet current, muddy water mixed solution enters reaction tank No. 2 by communicating aperture 8, passes through communicating aperture 9 again, and by No. 3 reaction tanks, the communicating aperture 10 of flowing through is flowed out by rising pipe 16 through effluent weir 18 from No. 4 ponds.Be back to respectively No. 1 and No. 2 ponds at 5 and 6 some mixed solution of place simultaneously.Like this between No. 1 pond and No. 2 ponds, form the hydraulic performance that circulates respectively between No. 2 ponds and No. 3 ponds.
Stage B (Fig. 3 B): this stage is the transition operation.2 and No. 3 the pond is the aeration state, and aerator begins aeration in the pond, and 1, No. 4 the pond is the precipitation state, and aerator stops aeration.No. 1 the pond inlet valve is closed, and No. 2 the pond inlet valve is opened.The internal reflux pump at 5 and 6 places cuts out.
No. 1 the pond stops into water, beginning quiescent setting 30 minutes.Sewage is entered by No. 2 ponds, flow to No. 3 ponds through communicating aperture 9 and degrades, and after communicating aperture 10 enters No. 4 pond water outlets, this moment, internal circulation system was closed.
Stage C (Fig. 3 C): 4,3 and No. 2 ponds are the aeration state, and aerator begins aeration in the pond; No. 1 the pond is the precipitation state, and aerator stops aeration.No. 4 the pond inlet valve is opened, and No. 1 the pond flowing water Valve is opened.The backflow water pump at 6 and 7 places is opened among the figure.
No. 2 the pond stops into water, switches to the water inlet of No. 4 ponds, and current are through No. 4 ponds and 10, No. 3 ponds of communicating aperture and 9, No. 2 ponds of communicating aperture and communicating aperture 8, at last from No. 1 pond water outlet.This stage water inlet direction is all just in time opposite with stage A with the inner circulating reflux direction, but action principle and stage A are in full accord.
Stage D (Fig. 3 D): this stage is the transition operation.3 and No. 2 the pond is the aeration state, and aerator begins aeration in the pond; No. 4 ponds and No. 1 pond are the precipitation state, and aerator stops aeration.No. 4 the pond inlet valve is closed, and No. 3 the pond inlet valve is opened.The backflow water pump at 6 and 7 places cuts out among the figure.
No. 4 the pond stops into water, switches to No. 3 pond water inlets, through 9, No. 2 ponds of communicating aperture and communicating aperture 8, by No. 1 pond water outlet.This stage water inlet direction is all just in time opposite with stage B with the inner circulating reflux direction.
As seen, A and C are as the main phase of operation among Fig. 3, and their water (flow) direction is opposite, and the mechanism of action is identical.Stage B and D are the identical transition operation of the opposite principle of both direction.Stage A-D is a standard cycle of operation, after a standard cycle of operation finishes, can enter the next standard cycle of operation again, continuously sewage is handled.
The time of each operation section of this technology also can be regulated flexibly, generally is divided into 4 hours, moves sequential in 6 hours and 8 hours.
Above-mentioned standard operational mode is the organic matter degradation mode standard.
Because the alternative expression operation process is simultaneously as aerating system and settling system, the volume of aerating system, time, sludge quantity and machine utilization all will reflect the overall efficiency of a sewage treatment process like this, and promptly utilization rate of tank volume is shown below.
In the formula, X
Mi, X
S1, X
S2-middle aeration tank, pond, limit 1,2 participate in the average sludge concentration of reaction; t
Si,, t
MiThe reaction times of pond ,-limit and middle aeration tank, h; V
SiThe volume in pond ,-limit, m
3V
MiThe volume of-middle aeration tank, m
3(annotate: formula 1 is selected from " water supply and drainage ", and 1999.25 (3), wangkai army, aeration, precipitation integral activated sludge process method of design and problem discussion)
As seen, the aeration tank appearance, reaction times, the sludge quantity that improve technology all will improve utilization rate of tank volume greatly, reduce and handle energy consumption.
Technology of the present invention has been inherited the characteristics of improving the water inlet continuously of SBR technology, continuous effluent, permanent water level and alternative expression operation, draw oxidation ditch process circulation hydraulic flow feature and Sludge System stable properties, fundamentally overcome each reactor sludge concentration maldistribution phenomenon in UNITANK technology and three channel type oxidation channels, effectively improved art breading efficient, finally formed alternative expression internal recycle aerobe reactor with self-character.
See also Fig. 2, the present invention is made up of four bar shaped rectangles pond, 1,2,3 and No. 4 pond, and 2, No. 3 middle pond is always the continuous aeration pond, and 1, No. 4 dual-side pond is alternately as aeration tank and settling tank, and each pond is equipped with water feed apparatus, and water outlet is carried out in the dual-side pond; Compare (as three channel type oxidation channel technologies) with the alternative expression operation process that arrange in three ponds, according to formula (1), suppose that each Chi Chi appearance, working time and sludge concentration all equate, calculate gained utilization rate of tank volume of the present invention thus and improve nearly 10% than the utilization rate of tank volume of three channel type oxidation channel technologies.
Pond of the present invention molded dimension, the pond type requirement in the time of at first must satisfying pond, 1, No. 4 limit as settling system secondly in order to form effective internal circulation system, needs to form certain water body plug-flow speed.As requested, each reaction tank of the present invention is a rectangle, and its single pond long-width ratio is between 4～10, and length-depth ratio is between 6～12.
Can eliminate the characteristics of mud phenomenon pockety in the monomer pond according to the waterpower fluidised form of the oxidation ditch process that circulates, the present invention increases low lift, less energy-consumption inner circulating reflux pump at 5,6 and 7 places, improve the waterpower circulation between adjacent pond, remedy the influence that causes sludge concentration to reduce because of the plug-flow effect, the mud distribution situation of improvement system, improve the sludge quantity of aerating system, further improved utilization rate of tank volume; Internal reflux ratio is set is between 100%～200% at 5 and 7 places in the drawings in the present invention, and 6 place's reflux ratios are 50%～150% in the drawings.
In order to have improved the utilising efficiency of dissolved oxygen, the aerating apparatus in each reaction tank of the present invention adopts the membrane type aerator.And other alternative expression process using aeration rotary brush or surface aerating machine, the utilization ratio of dissolved oxygen is relatively low.
See also Fig. 4, the present invention is provided with anoxic pond 19 at front end, carries out the removal of nitrogenous source by denitrification.Be provided with agitator in the anoxic pond 19, guarantee to reach anoxic condition in the pond.1,2,3 and No. 4 ponds are Aerobic Pond, are provided with water feed apparatus between each reaction tank and the anoxic pond 19, and each reaction tank is provided with aerator, and 1 and No. 4 the pond is provided with discharging device in addition.The far-end that is positioned at water feed apparatus between No. 2 reaction tanks and No. 3 reaction tanks is provided with bidirectional-reflux water pump 6, between anoxic pond 19 and No. 2 reaction tanks, No. 3 reaction tanks, be respectively arranged with unidirectional backflow water pump 20,21, can satisfy simultaneously that nitrification liquid refluxes and the effect of being evenly distributed of mud.This treatment unit is the denitrogenation processing pattern.
Sewage at first enters anoxic pond 19 and carries out denitrification denitrogenation, simultaneously carry out the backflow of Aerobic Pond nitrification liquid according to different operations with 21 places 20, mixing solutions enters and finishes the process of removing organism and nitration reaction in 1,2,3 and No. 4 ponds of Aerobic Pond subsequently, the operation scheme of Aerobic Pond is identical with organic matter degradation mode standard (Fig. 3), also can be divided into 4 operation phase.But the cycle of operation is flexible also.
See also Fig. 5, the present invention sets up anaerobic pond 22 at the reactor front end, tells zone 23 and 24 as anoxic zones in 1 and No. 4 pond, can reach the purpose of denitrogenation dephosphorizing simultaneously; Anaerobic pond 22, oxygen-starved area 23 and 24 all are equipped with agitator, are responsible for anoxic and anaerobic state in the control pond; 1,2,3 and No. 4 reaction tanks are Aerobic Pond, are provided with water feed apparatus between each reaction tank and the anaerobic pond 22, and 1 and No. 4 the pond is provided with discharging device; In place unidirectional reflux pump 25,26 is installed between No. 1 pond and No. 2 ponds, near anaerobic pond between No. 3 ponds and No. 4 ponds, the far-end that is positioned at water feed apparatus between No. 2 ponds and No. 3 ponds is provided with bidirectional-reflux pump 6, guarantees to form in the aerobic system efficient internal recycle waterpower fluidised form; Unidirectional water pump 27,28 respectively is installed between anaerobic pond 22 and oxygen-starved area 23,24, with residual sludge reflux in the settling tank to anaerobic pond.This treatment unit is the synchronous denitrification dephosphorizing degradation model.
This processing denitrogenation dephosphorizing standard operational mode is divided into six stage-A, B, C, D, E and F (Fig. 5).
Stage A (Fig. 5 A): 1,2 and No. 3 ponds begin aeration, and No. 4 the pond begins precipitation.No. 1 the pond begins water inlet, No. 4 pond water outlets.Backflow water pump 25,6 and 28 is opened among the figure.
Sewage at first enters from No. 1 pond, and flow through 8, No. 2 reaction tanks of communicating aperture, 9, No. 3 reaction tanks of communicating aperture and communicating aperture 10 flow out from No. 4 ponds at last, the effect that this process is carried out is nitrated, inhale phosphorus and organic matter degradation.There is simultaneously partially mixed liquid to be back to No. 1 reaction tank and oxygen-starved area 23 respectively, satisfies the purpose of oxygen-starved area denitrification denitrogenation and the effect of mixed-liquor return simultaneously at 25 and 6 places.Residual sludge reflux pump 28 to anaerobic pond 22, reaches the purpose of putting phosphorus with the residual sludge reflux in No. 4 ponds in No. 4 ponds.
Stage B (Fig. 5 B): this moment, 1,2 and No. 3 pond still was the aeration state, No. 4 pond precipitation states.No. 1 the pond stops into water, and the beginning static state deposition is by No. 2 pond water inlets, No. 4 pond water outlets.Different with stage A is that the agitator in the oxygen-starved area 23 stops to stir, the beginning aeration.Reflux pump 25 and 6 quits work, and residual sludge reflux pump 28 is continuous firing still.
Stage C (Fig. 5 C): this stage is the transition operation.2 and No. 3 ponds are the aeration state, and 1, No. 4 the pond is the precipitation state, and aerator stops aeration.Reflux pump 25 and 6 is closed, and residual sludge reflux pump 28 is continuous firing still.Sewage is entered by No. 2 ponds, flow to No. 3 pond degradeds through communicating aperture 9, after communicating aperture 10 enters No. 4 pond water outlets.
Stage D (Fig. 5 D): 4,3 and No. 2 ponds are the aeration state, and No. 1 pond is the precipitation state.No. 4 the pond begins water inlet, and No. 1 the pond begins water outlet.The backflow water pump at 26,6 and 27 places is opened among the figure.
No. 2 the pond stops into water, switches to the water inlet of No. 4 ponds, and current are through No. 4 ponds and 10, No. 3 ponds of communicating aperture and 9, No. 2 ponds of communicating aperture and communicating aperture 8, at last from No. 1 pond water outlet.This stage water inlet direction is all opposite with stage A with mixed solution pump around circuit direction, and action principle is identical.
Stage E (Fig. 5 E) 4,3 and No. 2 ponds this moment still are the aeration state, No. 1 pond precipitation state.By No. 3 pond water inlets, No. 1 pond water outlet.Different with stage A is that the agitator in the oxygen-starved area 24 stops to stir, the beginning aeration.Reflux pump 26 and 6 quits work, and residual sludge reflux pump 27 is continuous firing still.
Stage F (Fig. 5 F) this stage is the transition operation.3 and No. 2 ponds are the aeration state, and No. 4 ponds and No. 1 pond are the precipitation state.The backflow water pump at 26 and 6 places cuts out among the figure, and residual sludge reflux pump 27 is continuous firing still.
Sewage is entered by No. 3 ponds, through 9, No. 2 ponds of communicating aperture and communicating aperture 8, from No. 1 pond water outlet.This stage water inlet direction is all just in time opposite with stage C with the inner circulating reflux direction.
Stage A-F is a standard cycle of operation, and one-period enters next cycle after finishing, and so continuously realizes the continuous processing of sewage.
Above-mentioned standard operational mode is a denitrogenation dephosphorizing degraded mode standard.This tupe can be adjusted the operation activity time and increase corresponding attached operation according to practical situation.
Certainly, realization is to the control of each Inlet and outlet water valve and water circulating pump, need an electric control system to operate, on the basis that discloses clear structure of the present invention and operation scheme, the person skilled in art can design electric control system without creative work, so this paper repeats no more electric control system.
Further specify advantage of the present invention and effect below by actual sewage treatment plant test result.
Test condition and method
Adopt alternative expression internal recycle aerobe reactor in this engineering, reactor useful volume 15960m
3, total residence time 5.3 hours, planar dimension 101.2 * 41.4 * 4.7m, average sludge concentration is 2.5g/L.The cycle of operation is 6 hours operations, and wherein A, C are master operation (2.5h), and B and D operation are time operation (0.5h), and it is 2400m3/h that duration of test is handled the water yield, and average sludge concentration is 2192.7mg/L.The complete opening internal circulation system is to carrying out the analysis of MLSS sampling and measuring under each operation operation situation.1,2,3 and No. 4 ponds respectively are distributed with 5 sampling points, sampling time interval 15 minutes.
Test result sees the following form 1.
The mud total amount of table 1 half period internal reaction pond different time and average sludge concentration
| Time | No. 1 pond | No. 2 ponds | No. 3 ponds | The total sludge quantity of aeration (T) | |||
| Sludge quantity (T) | Average sludge concentration (mg/L) | Sludge quantity (T) | Average sludge concentration (mg/L) | Sludge quantity (T) | Average sludge concentration (mg/L) | ||
| 0 | 21.21 | 5315.72 | 8.12 | 2035.76 | 6.92 | 1734.71 | 36.25 |
| 15 | 14.94 | 3743.90 | 16.08 | 4030.66 | 5.39 | 1350.50 | 36.41 |
| 30 | 9.98 | 2501.87 | 15.38 | 3855.42 | 8.12 | 2034.13 | 33.48 |
| 45 | 10.78 | 2701.56 | 10.08 | 2526.63 | 12.24 | 3066.74 | 33.10 |
| 60 | 9.44 | 2366.37 | 7.62 | 1909.84 | 13.52 | 3387.29 | 30.58 |
| 75 | 7.42 | 1859.25 | 10.93 | 2738.58 | 11.53 | 2890.21 | 29.88 |
| 90 | 7.01 | 1756.18 | 10.43 | 2615.26 | 9.94 | 2491.55 | 27.38 |
| 105 | 7.39 | 1852.48 | 8.57 | 2148.95 | 9.90 | 2480.47 | 25.86 |
| 120 | 7.28 | 1824.27 | 7.66 | 1919.29 | 9.80 | 2455.61 | 24.73 |
| 135 | 6.56 | 1643.51 | 7.90 | 1980.82 | 9.25 | 2318.16 | 23.71 |
| 150 | 6.56 | 1643.51 | 7.90 | 1980.82 | 8.93 | 2237.08 | 23.39 |
| 165 | 6.56 | 1643.51 | 7.90 | 1980.82 | 8.32 | 2086.16 | 22.78 |
| 180 | 6.56 | 1643.51 | 7.90 | 1980.82 | 7.25 | 1817.16 | 21.71 |
According to the experiment gained, the distribution of the mud in 1,2 and No. 3 pond distributes identical with the mud in 4,3 and No. 2 ponds of back half period (operation C and D) in the preceding half period (operation A and B).As shown in Figure 6.
S in Fig. 6
1-1Represent pond water inlet initial time sludge concentration No. 1, S
1-2Represent pond water inlet end moment sludge concentration No. 1, S
1-3The mean concns of representing No. 1 pond water inlet process.S
2-1Represent pond water inlet initial time sludge concentration No. 2, S
2-2Represent pond water inlet end moment sludge concentration No. 2, S
2-3The mean concns of representing No. 2 pond water inlet processes.S
3-1Represent pond water inlet initial time sludge concentration No. 3, S
3-2Represent pond water inlet end moment sludge concentration No. 3, S
3-3The mean concns of representing No. 3 pond water inlet processes.S
4-1Represent pond water inlet initial time sludge concentration No. 4, S
4-2Represent pond water inlet end moment sludge concentration No. 4, S
4-3The mean concns of representing No. 4 pond water inlet processes.
By finding out among Fig. 6, initial moment sludge concentration is distributed as S
1-1Maximum, S
4-1Minimum, S
2-1And S
3-1Substantially equal, the interior sludge concentration of reaction tank is distributed as S during the finish time
4-2Maximum, S
1-2Minimum, S
2-2And S
3-2Basic identical, and the average sludge concentration S of each reaction tank
1-3, S
2-3, S
3-3And S
4-3It is basic equating.
Therefore, after calculating average sludge concentration, each reaction tank operation activity time and the pond appearance substitution formula (1) of gained, the utilization rate of tank volume that gets alternative expression internal recycle aerobe reactor reaches 71%.And the utilization rate of tank volume of three channel type oxidation channels is about 50%.The aerobic process design loading that this Sewage Plant adopted is 0.34kgBOD/kgMLSS.d, and the settling tank surface load is 2.2m3/m2h.The sewage treatment project ton water cost of testing only is 669 yuan, and the ton cost of water treatment is 0.34 yuan (comprising operation power consumption and depreciation of major repair).Above described parameters all be better than the existing similar device of disposing of sewage.
Claims (5)
1, a kind of alternative expression internal recycle aerobe reactor, comprise communicating aperture between aerobe reaction tank, each aerobe reaction tank, each aerobe reaction tank is provided with water inlet pipe and the dual-side pond is provided with effluent weir and rising pipe, and in each aerobe reaction tank aerating apparatus is installed, it is characterized in that:
The quantity of described aerobe reaction tank is 4, be No. 1 aerobe reaction tank, No. 2 aerobe reaction tanks, No. 3 aerobe reaction tanks and No. 4 aerobe reaction tanks from left to right successively, each aerobe reaction tank be shaped as long strip shape, 4 aerobe reaction tanks are arranged side by side;
No. 1 aerobe reaction tank and No. 4 aerobe reaction tanks of being positioned at both sides are provided with water inlet pipe, effluent weir and rising pipe, are positioned at No. 2 aerobe reaction tanks of intermediary and No. 3 aerobe reaction tanks and only are provided with water inlet pipe;
Between No. 1 aerobe reaction tank and No. 2 aerobe reaction tanks and the far-end that is positioned at water inlet pipe between No. 3 aerobe reaction tanks and No. 4 aerobe reaction tanks be provided with first communicating aperture (8) and second communicating aperture (10), the near-end that is positioned at water inlet pipe between No. 2 aerobe reaction tanks and No. 3 aerobe reaction tanks is provided with third connecting hole (9);
Between No. 1 aerobe reaction tank and No. 2 aerobe reaction tanks and the near-end that is positioned at water inlet pipe between No. 3 aerobe reaction tanks and No. 4 aerobe reaction tanks be provided with the first unidirectional reflux pump (5) and the second unidirectional reflux pump (7), current can only be flowed to avris aerobe reaction tank by middle aerobe reaction tank; The far-end that is positioned at water inlet pipe between No. 2 aerobe reaction tanks and No. 3 aerobe reaction tanks is provided with bidirectional-reflux pump (6), and current can flow between No. 2 aerobe reaction tanks and No. 3 aerobe reaction tanks back and forth;
The aerobe reaction tank of both sides alternately uses as aeration tank and settling tank, and middle two aerobe reaction tanks use as the aeration tank all the time.
2, alternative expression internal recycle aerobe reactor according to claim 1 is characterized in that: described each aerobe reaction tank is a rectangle, and its single pond long-width ratio is between 4～10, and length-depth ratio is between 6～12.
3, alternative expression internal recycle aerobe reactor according to claim 1 is characterized in that: the aerating apparatus in the described aerobe reaction tank adopts the membrane type aerator.
4, according to claim 1,2 or 3 described alternative expression internal recycle aerobe reactors, it is characterized in that: the front end at reactor is provided with anoxic pond (19), carries out the removal of nitrogenous source by denitrification; Anoxic pond is provided with agitator in (19), guarantees to reach anoxic condition in the pond; Be provided with water feed apparatus between 1～No. 4 aerobe reaction tank and the anoxic pond (19); Between anoxic pond (19) and No. 2 aerobe reaction tanks, No. 3 aerobe reaction tanks, be respectively arranged with the 3rd unidirectional backflow water pump (20) and the 4th unidirectional backflow water pump (21), can satisfy simultaneously that nitrification liquid refluxes and the effect of being evenly distributed of mud.
5, according to claim 1,2 or 3 described alternative expression internal recycle aerobe reactors, it is characterized in that: set up anaerobic pond (22) at the reactor front end, in 1 and No. 4 pond, tell first oxygen-starved area (23) and second oxygen-starved area (24) as anoxic zones, can reach the purpose of denitrogenation dephosphorizing simultaneously; Anaerobic pond (22), first oxygen-starved area (23) and second oxygen-starved area (24) all are equipped with agitator, are responsible for anoxic and anaerobic state in the control pond; Be provided with water feed apparatus between 1～No. 4 aerobe reaction tank and the anaerobic pond (22); In place the 5th unidirectional reflux pump (25) and the 6th unidirectional reflux pump (26) are installed between No. 1 pond and No. 2 ponds, near anaerobic pond between No. 3 ponds and No. 4 ponds, the first unidirectional water pump (27) and the second unidirectional water pump (28) respectively are installed between anaerobic pond (22) and first oxygen-starved area (23) and second oxygen-starved area (24), with residual sludge reflux in the settling tank to anaerobic pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009048 CN1283564C (en) | 2004-04-27 | 2004-04-27 | Alternation internal circulation aerobe reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009048 CN1283564C (en) | 2004-04-27 | 2004-04-27 | Alternation internal circulation aerobe reactor |
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| Publication Number | Publication Date |
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| CN1569688A CN1569688A (en) | 2005-01-26 |
| CN1283564C true CN1283564C (en) | 2006-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410009048 Expired - Fee Related CN1283564C (en) | 2004-04-27 | 2004-04-27 | Alternation internal circulation aerobe reactor |
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| CN (1) | CN1283564C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391856C (en) * | 2006-07-06 | 2008-06-04 | 彭世英 | Comprehensive domestic sewage utilizing system |
| CN102145938B (en) * | 2010-02-05 | 2013-01-16 | 江苏新龙鼎环保成套工程有限公司 | Anaerobic clapboard reactor for changing load of sludge bed according to water flow direction |
| CN106145557B (en) * | 2016-08-29 | 2023-02-10 | 武汉汇中大川自动控制设备有限公司 | Integrated switching aeration sewage treatment system and treatment method |
| CN108609727A (en) * | 2018-05-07 | 2018-10-02 | 王新 | A kind of modified form three working position technique |
| CN110078216B (en) * | 2019-05-31 | 2021-11-16 | 凌志环保股份有限公司 | Double-tank oxidation ditch integrated system capable of alternately and continuously running |
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