CN203159405U - Coupled biological denitrification system - Google Patents
Coupled biological denitrification system Download PDFInfo
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- CN203159405U CN203159405U CN 201320161073 CN201320161073U CN203159405U CN 203159405 U CN203159405 U CN 203159405U CN 201320161073 CN201320161073 CN 201320161073 CN 201320161073 U CN201320161073 U CN 201320161073U CN 203159405 U CN203159405 U CN 203159405U
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Abstract
The utility model discloses a coupled biological denitrification system which comprises a front end anoxic tank, an aerobic tank, a back end anoxic tank, a first SBR (sequencing batch reactor) tank and a second SBR tank, wherein a suspended enzyme carrier is arranged in each of the aerobic tank, the first SBR tank and the second SBR tank; the front end anoxic tank is communicated with the aerobic tank; the aerobic tank is communicated with the back end anoxic tank; the back end anoxic tank is respectively communicated with the first SBR tank and the second SBR tank; a mixed solution reflux pump for transferring a mixed solution in the aerobic tank into the front end anoxic tank is communicated between the aerobic tank and the front end anoxic tank; and sludge reflux pumps for respectively transferring sludge in the first SBR tank and the second SBR tank into the front end anoxic tank are respectively arranged between the first SBR tank and the front end anoxic tank as well as between the second SBR tank and the front end anoxic tank. The coupled biological denitrification system greatly improves the denitrification efficiency, has remarkable denitrification effect, is applicable to degradation of ammonia nitrogen and high-COD (chemical oxygen demand) wastewater, and has remarkable treatment effect on coal chemical wastewater.
Description
Technical field
The utility model relates to technical field of sewage, relates in particular to a kind of manifold type biological denitrification system.
Background technology
Coal Chemical Industry, the biological fermentation industry of discharging high nitrogen-containing wastewater in recent years are rapid in China's development.Simultaneously, along with the quickening of Development of China's Urbanization, a large amount of sanitary sewages also need collection and treatment, and for reducing blowdown to greatest extent to the pollution of water body environment, country has put into effect more strict ammonia nitrogen and total nitrogen emission standard.
And the multistage AO technology of currently used denitrification process, SBR technology, MBR technology is all based on activated sludge process, and also some middle-size and small-size project adopts the contact oxidation technology based on the fixed biologically embrane method.But above-mentioned technological line or the common unit pond that exists holds biological total amount lower (as multistage AO, SBR, catalytic oxidation), or there is big (as AO or the catalytic oxidation) problem of disengaging zone area occupied.
Existing biochemical processing process simplified summary is as follows:
1, MSBR technology
Fig. 1 is the floor plan synoptic diagram of typical MSBR system in the prior art.As shown in Figure 1, sewage at first enters anaerobic pond, carries out sewage and mix with the high concentration sludge that settling tank refluxes in anaerobic pond, and then mixed solution enters Aerobic Pond, and the carbonization bacterium is finished the degraded of organic carbon, and nitrifier is finished the nitrated of ammonia nitrogen.An Aerobic Pond mixed solution part has entered the mixed solution circulation of SBR pond 1 → anoxic pond → settling tank → Aerobic Pond formation internal system.Another part of aeration tank mixed solution enters SBR pond 2, and post precipitation flows out system as water.SBR pond 1 and SBR pond 2 said process that hockets, when one of them carried out anoxic, aerobic circulating reaction, another sequencing batch pond discharged as the rectangular sedimentation tank water outlet.Constantly accumulate through the sequencing batch pond mud as the settling tank effect behind the certain hour, the mud face rises to a certain degree back and another sequencing batch pond exchange operation in the pond, and excess sludge discharge is in the directly bottom discharging from sequencing batch pond of precipitation later stage.
The advantage of MSBR technology is to adopt continuous water-in and water-out, the problem of having avoided traditional SBR that control requirement and the intermittent drainage thereof of water inlet caused.Adopt permanent water level operation, avoided traditional SBR to become the shortcoming that water level operation head loss is big, the pond capacity utilization is low.For mud-water separation provides the similar quiescent setting condition with traditional SBR, improved effluent quality.
Weak point is: as the COD of water inlet, when ammonia nitrogen concentration is very high, MSBR technology can not satisfy emission request.
2, two sections A/O technologies (Bardenpho technology)
Fig. 2 is two sections A/O process flow sheets of prior art.As shown in Figure 2, Bardenpho technology is in series by two anoxics/aerobic (A/O) technology, has four reaction tanks.
The front of four sections Bardenpho technologies is similar to A/O technology for two sections.In first step A/O technology, nitrate nitrogen in the backflow mixed liquor utilizes the carbonaceous organic material in the raw waste water to carry out anti-nitration reaction as carbon source in first anoxic pond under the effect of denitrifying bacteria, after water outlet behind the denitrification enters first Aerobic Pond, carbonaceous organic material is oxidized, itrogenous organic substance is realized the nitrification of ammonification and ammonia nitrogen, and the N2 that produces at the first anoxic pond denitrification discharges through aeration stripping at first Aerobic Pond simultaneously.In the A/O technology of the second stage, after the mixed solution that is come by first Aerobic Pond enters second anoxic pond, denitrifying bacteria utilizes the endogenous metabolism material in the mixed solution further to carry out denitrification, the N2 that denitrification produces discharges through aeration stripping at second Aerobic Pond, improve mud sedimentation function, simultaneously the ammonia nitrogen that produces of endogenous metabolism also can obtain nitrated at second Aerobic Pond.Bardenpho has denitrification process twice, and nitric efficiency can be up to 90%～95%.
Weak point is: mud need be set reflux and structures such as nitrification liquid backflow pump house, second pond, floor space is big, the construction investment height, and the operational management inconvenience, power consumption is big.
3, SBR technology
SBR is the abbreviation of sequence intermittent activated sludge process (Sequencing Batch Reactor Activated Sludge Process), is a kind of active sludge sewage disposal technology that moves by the intermittent aeration mode, claims sequencing batch active sludge again.Different with traditional manifold type biological denitrification method, the operating method of the alternative space segmentation of operating method that the SBR technology employing time is cut apart, astable biochemical reaction substitutes the stable state biochemical reaction, leaves standstill desirable precipitation and substitutes traditional dynamic precipitation.Its principal character be in operation in order and periodical operation, the core of SBR technology is the sbr reactor pond, this pond collects homogenizing, heavy, biological degradation just, two functions such as heavy in a pond, no mud return-flow system.
SBR has the following advantages:
1) desirable plug-flow process increases the biochemical reaction impellent, and efficient improves, anaerobism, the aerobic alternating state that is in the pond, good purification.
2) operating performance is stable, and sewage precipitates under desirable stationary state, need the time short, efficient is high, effluent quality is good.
3) anti impulsion load has the processing water of delay in the pond, sewage is had dilution, shock absorption, effectively resists the impact of the water yield and organic dirt.
4) treatment facility is few, and simple structure is convenient to the operation and maintenance management.
5) there are DO, BOD5 concentration gradient in the reaction tank, effectively control activated sludge bulking.
6) technical process is simple, cost is low.Main equipment has only a sequence batch (batch reactor, no second pond, mud return-flow system, and equalizing tank, preliminary sedimentation tank also can omit, and arrange compact, small accommodation area.
Weak point is: SBR technology is applicable to the sewage work of middle and small scale, inapplicable large-scale Sewage Plant, and equipment and utilization rate of tank volume are lower, denitrogenation dephosphorizing effect instability, and head loss is also big.
Therefore, those skilled in the art is devoted to develop and a kind ofly can overcomes above-mentioned the deficiencies in the prior art, is applicable to the manifold type biological denitrification system of high ammonia nitrogen, high-COD waste water degraded.
The utility model content
Because the above-mentioned deficiency of prior art, it is good to the utility model proposes a kind of denitrification effect, is applicable to the manifold type biological denitrification system of high ammonia nitrogen, high-COD waste water degraded.
The utility model proposes a kind of manifold type biological denitrification system, comprise preposition anoxic pond, Aerobic Pond, rearmounted anoxic pond, a SBR pond and the 2nd SBR pond, be provided with the floating filler of enzyme in described Aerobic Pond, a SBR pond and the 2nd SBR pond, described preposition anoxic pond is communicated with described Aerobic Pond, described Aerobic Pond is communicated with described rearmounted anoxic pond, and described rearmounted anoxic pond is communicated with a described SBR pond and the 2nd SBR pond respectively; Also be communicated with between described Aerobic Pond and the described preposition anoxic pond and be provided with one and be used for the mixed solution in the described Aerobic Pond is delivered to mixed-liquor return pump in the described preposition anoxic pond, a described SBR pond and the 2nd SBR pond also are communicated with and are provided with one for the sludge reflux pump that the mud in a described SBR pond and the 2nd SBR pond is delivered in the described preposition anoxic pond respectively with between the described preposition anoxic pond.
As further improvement of the utility model, the floating filler of the enzyme in the described Aerobic Pond is vertical the setting.
As further improvement of the utility model, the floating filler of the enzyme in a described SBR pond and the 2nd SBR pond and pool inner water flow path direction are 60 °-80 ° angle setting.
As further improvement of the utility model, the floating filler of described enzyme is gasket packing, and the floating filler of the described enzyme in the same pond is each other for being arranged in parallel, and installing space is 10-50cm, and packing ratio is to account for the 40-60% that the pond holds.
What need remark additionally is, the floating filler of enzyme described in the utility model can select for use the applicant to apply on July 22nd, 2008, on May 2nd, 2012 authorized, notification number is CN101633529B, name is called the ionic enzymatic suspended filler that " the ionic enzymatic suspended filler manufacture method that is applied to high-leveled and difficult wastewater treatment " made, and has not just given unnecessary details at this place.
In sum, the beneficial effect of the utility model manifold type biological denitrification system is as follows:
1) good nitrogen removal performance.The floating filler of enzyme is set, make the stable stereo ecological bit pattern that has different strain in the pond, the nitrification and denitrification process can organically combine, and carry out simultaneously, thereby the pH that energy reduction system takes place in the nitration denitrification process changes, reduce denitrification process to carbon source and basicity demand, denitrogenation degree height, effect stability.Simultaneously, technology has been strengthened denitrification process by special rearmounted anoxic pond, and in addition, SBR pond non aerated phases precipitating sludge bed also has certain denitrification, thereby makes system that good denitrification effect be arranged.
2) structure of the present utility model and technical process are simple, civil engineering and investment are low, no preliminary sedimentation tank, second pond, the level of automation height, the microorganism total amount is made up of the active sludge of suspended state and the microbial film of settled organism in the pond simultaneously, sludge concentration can reach more than the 6000mg/L, even under the situation that biological load does not increase, higher volumetric loading can bear in the system that also makes, it is low that Gu Chi holds far beyond traditional biochemical treatment system, makes civil engineering occupation of land and investment far below existing biochemical processing process.
3) intake for being interrupted for single SBR pond, but for whole technology and system, realized continuous water inlet, water outlet, make that whole technology water outlet is even continuously, convenient operation and management.
4) pool inner water position substantially constant, Aerobic Pond are in normal aeration state, have increased the pond capacity utilization, have improved usage ratio of equipment; Gas blower pressure-stabilisation, efficient height; Atmospheric oxygen trans-utilization rate height, volumetric loading and sludge loading height.Simultaneously, because the filling of the floating filler of enzyme, the bubble that discharges for the bottom micro-pore aeration plays secondary shearing and prevents and poly-system, has correspondingly prolonged air and water, microorganism mass transfer time; Filler is tackled formed turbulent hydraulic shear, makes the refinement of bubble height and evenly dispersion, has determined the trans-utilization rate height of atmospheric oxygen in the pond.Enough dissolved oxygens are the conditions that guarantees the heavy-duty service of aerobe treatment system, and this also is one of advantage of the present utility model.
5) good effect of separating solid from liquid, excess sludge production is less, reduces sludge treatment and disposal costs.Because the contained protozoon composition of microbial film mud that peels off is more and proportion is bigger, and the mud granule individuality is bigger, thereby has good sludge settling property, is easy to solid-liquid separation.Because food chain is longer in the microbial film, thereby surplus sludge volume obviously reduces, particularly the microbial film of the floating filler of enzyme is thicker than traditional biomembrance process, and inner anerobe can be decomposed the excess sludge that the part aerobic processes is synthesized, thereby total surplus mud is significantly reduced.
6) the utility model is equivalent to a complete mixing reactor during intaking, has powerful dilution function, thereby have stronger anti impulsion load and an anti-poisonous substance ability, belong to quiescent setting during the precipitation, deposition condition is good, higher sludge concentration can be accumulated in the reactor, thereby second pond can be do not established.
7) according to the biological respinse principle of dynamics, adopt the serial or parallel connection operation of many ponds, make sewage reactor mobile present whole plug-flow and in different zones the complicated fluidised form for mixing fully, not only guaranteed the stable treated effect, and improved capacity utilization.
8) the utility model increases the floating filler of tilting enzyme in a SBR pond and the 2nd SBR pond, loads with the release surface that reduces outlet sump in order to filter water outlet and to increase the separate tank separating area, thereby guarantees lower water outlet SS.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, feature and effect fully.
Description of drawings
Fig. 1 is the floor plan synoptic diagram of typical MSBR system in the prior art.
Fig. 2 is two sections A/O process flow sheets of prior art.
Fig. 3 is the flow chart of steps of manifold type biological denitrification method.
Fig. 4 is the process flow diagram of manifold type biological denitrification system.
Fig. 5 is the structural arrangement synoptic diagram of manifold type biological denitrification system.
Embodiment
Embodiment one:
Fig. 4 is the process flow diagram of manifold type biological denitrification system, and Fig. 5 is the structural arrangement synoptic diagram of manifold type biological denitrification system.
As shown in Figure 4 and Figure 5, a kind of manifold type biological denitrification system of present embodiment, comprise preposition anoxic pond 1, Aerobic Pond 2, rearmounted anoxic pond 3, a SBR pond 4 and the 2nd SBR pond 5, be provided with the floating filler 6 of enzyme in Aerobic Pond 2, a SBR pond 4 and the 2nd SBR pond 5, preposition anoxic pond 1 is communicated with Aerobic Pond 2, Aerobic Pond 2 is communicated with rearmounted anoxic pond 3, and rearmounted anoxic pond 3 is communicated with a SBR pond 4 and the 2nd SBR pond 5 respectively; Also be communicated with between Aerobic Pond 2 and the preposition anoxic pond 2 and be provided with one and be used for that the mixed solution in the Aerobic Pond 2 is delivered to mixed-liquor return pump 7, the one SBR ponds 4 in the preposition anoxic pond 1 and the 2nd SBR pond 5 and also be communicated with and be provided with one and be used for the mud in a SBR pond 4 and the 2nd SBR pond 5 is delivered to the interior sludge reflux pump 8 of preposition anoxic pond 1 respectively with between the preposition anoxic pond 1.
Concrete, it is CN101633529B that the floating filler 6 of present embodiment enzyme can adopt notification number, name is called the ionic enzymatic suspended filler described in " the ionic enzymatic suspended filler manufacture method that is applied to high-leveled and difficult wastewater treatment ".
Exemplary, the floating filler 6 of the enzyme that present embodiment adopts is to be that instruction in the file of CN101633529B is made according to notification number, is specially to adopt the enzyme of the en plaque that [0027] section method of instructing to [0030] section embodiment 1 of this document produce to float filler.
Certainly, in other specific embodiments, the floating filler 6 of enzyme can also adopt other manufacture method to make.
Further embodiment as present embodiment, the floating filler 6 of enzyme in the Aerobic Pond 2 is vertical the setting, the floating filler 6 of enzyme in the one SBR pond 4 and the 2nd SBR pond 5 is 60 ° angle setting with the pool inner water flow path direction, and the floating filler 6 of some enzymes that is arranged in the same pond keeps being parallel to each other.The floating filler 6 of enzyme is gasket packing, and the floating filler of the described enzyme in the same pond is each other for being arranged in parallel, and installing space is 10-50cm, and packing ratio is to account for the 40-60% that the pond holds.Certainly, in other specific embodiments, the floating filler of enzymes in a SBR pond 4 and the 2nd SBR pond 5 and the angle of pool inner water flow path direction can also be 80 ° or be other slanted angles at the bottom of the pond.
Exemplary, the preposition anoxic pond 1 of present embodiment is connected with Aerobic Pond 2, and is provided with original water inlet, mixed solution import, returned sluge import, reaches whipping appts under water in preposition anoxic pond 1; Aerobic Pond 2 is connected with preposition anoxic pond 1, rearmounted anoxic pond 3, and enzyme floating filler 6, aerating apparatus and mixed solution internal reflux equipment that vertical hanging is installed are set in the Aerobic Pond 2; Carbon source auxiliary point or raw water inlet, whipping device and be connected with a SBR pond 4 and the 2nd SBR pond 5 under water are set on the rearmounted anoxic pond 3; Be equipped with the floating filler 6 of the enzyme that tilts to install in the one SBR pond 4 and the 2nd SBR pond 5, the setting angle of the floating filler 6 of this enzyme is greater than 60 degree, suspension height 1-1.5m also is provided with aerating apparatus and mud reflux, water-freeing arrangement simultaneously in a SBR pond 4 and the 2nd SBR pond 5.
The manifold type biological denitrification system of present embodiment can be implemented and uses by the manifold type biological denitrification method of embodiment one, just no longer gives unnecessary details herein.
The manifold type biological denitrification system of present embodiment has been strengthened denitrification process by special rearmounted anoxic pond 3, and in addition, two SBR pond non aerated phases precipitating sludge beds also have certain denitrification, thereby make system that good denitrification effect be arranged.Simultaneously because the floating filler of enzyme is set, make the stable stereo ecological bit pattern that has different strain in each pond, the nitrification and denitrification process can organically combine, and carry out simultaneously, thereby the pH that energy reduction system takes place in the nitration denitrification process changes, reduce denitrification process to carbon source and basicity demand, denitrogenation degree height, effect stability.Added the floating filler of enzyme and with the two SBR pond parallel runnings of connecting of many ponds, has realized that pending sewage can enter in the system continuously, floated the effect of filler and two SBR ponds by enzyme and replace water outlet and realize efficient water outlet and whole continuous effluent.And each pool inner water position substantially constant is whole plug-flow, and is the complicated fluidised form of mixing fully in different zones, and capacity utilization is higher, and treatment effect is more stable.Realized that denitrification effect is good, simple in structure, flexible, the level of automation height, even water distribution, have good microorganism, sewage reaction system, treatment effect is more efficient, and need not to arrange settling tank and second pond etc., the reduce investment outlay advantage of cost is very suitable for the degraded of high ammonia nitrogen, high-COD waste water.
Fig. 3 is the flow chart of steps of manifold type biological denitrification method.It is good that present embodiment also proposes a kind of denitrification effect, is applicable to the manifold type biological denitrification method of high ammonia nitrogen, high-COD waste water degraded.As shown in Figure 3, carry out following steps successively:
Step S1: sewage enters the front end anoxic pond, and with returned sluge from a SBR pond and the 2nd SBR pond, and mix from the mixed solution of Aerobic Pond, carry out anti-nitration reaction.Exemplary, be built-in with diving mixer in the front end anoxic pond and stir.
Step S2: the water outlet of described front end anoxic pond enters described Aerobic Pond, is provided with the floating filler of aerating apparatus and enzyme in the described Aerobic Pond, removes organism and realizes nitration reaction through aeration, and realize the synchronous nitration and denitrification reaction by the floating filler of described enzyme.
Step S3: described Aerobic Pond water outlet enters described rearmounted anoxic pond, by adding external carbon source or additional partial raw water in order to provide denitrification required carbon source, carries out anti-nitration reaction again in described rearmounted anoxic pond, further removes the total nitrogen in the sewage.Exemplary, be built-in with diving mixer in rearmounted anoxic pond and stir.
Step S4: described rearmounted anoxic pond water outlet alternately enters a described SBR pond and the 2nd SBR pond, a described SBR pond and the 2nd SBR pond all are built-in with aerating apparatus and the floating filler of enzyme, it is nitrated to handle denitrification carbon source or the degree of depth more than needed in a SBR pond and the 2nd SBR pond, to guarantee the thorough degraded of water outlet COD or ammonia nitrogen, carry out mud simultaneously and reflux.
Exemplary, it is CN101633529B that the floating filler of the described enzyme of present embodiment can adopt notification number, name is called the ionic enzymatic suspended filler described in " the ionic enzymatic suspended filler manufacture method that is applied to high-leveled and difficult wastewater treatment ".
Concrete, the floating filler of the enzyme that present embodiment adopts is to be that instruction in the file of CN101633529B is made according to notification number, is specially to adopt the enzyme of the en plaque that [0027] section method of instructing to [0030] section embodiment 1 of this document produce to float filler.
Certainly, in other specific embodiments, the floating filler of described enzyme can also adopt other manufacture method to make.
Further embodiment as present embodiment, in described step S4, when described Aerobic Pond water outlet enters a described SBR pond, water outlet is filtered as settling tank and by the floating filler of enzyme in a described SBR pond, described the 2nd SBR pond then is in the aerobic or precipitation state of aeration simultaneously, and by the mud reflux backflow of the mud in the 2nd SBR pond is delivered in the described anoxic pond; When the sewage in the described Aerobic Pond enters described the 2nd SBR pond, water outlet is filtered as settling tank and by the floating filler of enzyme in described the 2nd SBR pond, a described SBR mould pond then is in the aerobic or precipitation state of aeration simultaneously, and by the mud reflux backflow of the mud in the 2nd SBR pond is delivered in the described anoxic pond.Remove the water outlet CODcr that fails to utilize carbon source completely to cause because of rear-mounted denitrification and exceeded standard, and realized muddy water static separation and continuous effluent.
Exemplary, a SBR pond of present embodiment and the pond separately in the 2nd SBR pond hold and are 2-4 hour, only are divided into aerobic, precipitation, separate three time periods, and the cycle of operation is 2-4 hour.Preposition anoxic pond denitrification sludge loading is Ns=0.1～0.4KgKN/KgMLSSd or ammonia nitrogen loading Ns=0.05～0.25KgNH3-N/KgMLSSd.The residence time of rearmounted anoxic pond is no more than 1-4hr.The return current ratio of the mixed liquid of Aerobic Pond to section anoxic pond is subjected to the control of influent ammonia nitrogen, guarantees to enter intrasystem ammonia nitrogen concentration less than below the 80mg/L, and reflux ratio is calculated as follows N=C/80-2, and C is influent ammonium concentration or total nitrogen concentration.
Further embodiment as present embodiment, the floating filler of enzyme in the described Aerobic Pond is vertical the setting, the floating filler of enzyme in a described SBR pond and the 2nd SBR pond and pool inner water flow path direction are 60 °-80 ° angle setting, make the floating filler of enzyme be equivalent to general swash plate setting, increase the effect of deposition efficiency, when water outlet, increased the area of disengaging zone, improved separation efficiency, reduced water outlet SS, make solid-liquid separation effect better, when reaction, improve the sludge concentration in SBR pond, promoted reaction effect.And the floating filler of the described enzyme in the same pond is gasket packing, the floating filler of described enzyme is each other for being arranged in parallel, the pond body is divided into some parallel micro unit formulas along water (flow) direction, and the floating filler plate installing space of adjacent enzyme is 10-50cm, and packing ratio is to account for the 40-60% that the pond holds.
Exemplary, the process design parameter of case study on implementation of the present utility model is as follows:
Sludge loading: Ns=0.1-0.4KgCOD/KgMLSSd, influent ammonia nitrogen: 300mg/L, water inlet COD:800mg/L, sludge concentration 5000-6000mg/L, available depth 5-6m, sludge yield coefficient: 0.15-0.2KgTSS/KgCOD, TN clearance 75%-90%.COD clearance: 85%-95%.
Present embodiment is the advantage of comprehensive activated sludge process and biomembrance process in biodegradable mechanism, carries out CODcr, NH
3The degraded of-N and conversion.Be advantage with continuous plug-flow reaction bonded order batch reaction, precipitation, separation in the reaction kinetics principle, be combined type continuous flow sequencing batch reactor, its essence is the order batch reaction settling tank that connects two alternate runs behind the aerobic nitrification+rear-mounted denitrification of continuous Prepositive denitrification+continuously.Therefore the biological denitrificaion function that has two sections AO methods with the order batch reaction, separate (SBR) integrated characteristic.Owing to criticize the floating filler of increase enzyme in the settling tank at Aerobic Pond and order, this method is that the growth and breeding of various superior microorganisms has been created good envrionment conditions and hydraulics, make the biological processes such as nitrated, denitrification of organic degraded, ammonia nitrogen keep the highly effective reaction state, improve biochemical reaction mass transfer condition and separating effect effectively, promoted the lifting of biological degradation efficient.
In addition, owing in Aerobic Pond, a SBR pond and the 2nd SBR pond, increase the floating filler of fixing enzyme as the biological attachment carrier, make that the biological total amount of system is more than 2 times of activated sludge process with volume, has promoted the processing power of sewage biochemical treatment system greatly.The existence of the floating filler of enzyme is all played the effect of forcing turbulent fluctuation to current and air-flow, promotes water pollutant, air fully to contact with microorganism cells simultaneously, from having strengthened mass transfer process in fact.Therefore, mud mud is long age in the HBF system, and the reactor volume load is high, and the transformation efficiency height of hydraulic detention time weak point and oxygen can effectively be reduced investment outlay and running cost.
The manifold type biological denitrification method of present embodiment relies on microorganism and the common degradation of organic substances of suspension active sludge that is fixed on the floating filling surface of novel enzyme, combine the advantage of active sludge and biomembrance process, because the adding of the floating filler of enzyme, make the mechanism of sewage disposal and usefulness all greatly for a change.Microorganism basis for the survival environment is transformed into the gas, liquid, solid three-phase by original gas, liquid two-phase; Thisly change microorganism into and created abundanter existence form, form a more complicated combined type ecosystem.Exist simultaneously in the reactor and adhere to mutually and the suspending phase microorganism, have some free thalline to be attached to carrier surface at any time, some microbial films disengaging carrier surfaces are arranged again simultaneously and form suspended sludge.When this process reached balance, the carrier surface in the reactor just formed the microbial film of steady state, and the suspended sludge in this layer microbial film and the liquid phase plays a role jointly, the own degraded advantage of performance separately, and the while is interrelated on both direction in length and breadth again.In the vertical, microorganism has constituted a complicated ecosystem of being made up of a plurality of nutrition ranks such as bacterium, fungi, algae, protozoon, metazoans, wherein the quantity of each trophic level all is subjected to the restriction of environment and other trophic levels, finally reaches running balance.In the horizontal, direction along liquid to carrier, constituted the aerobic type that suspends, adhered to aerobic type, adhered to facultative type, adhered to multiple different motion ability, the type of respiration of anaerobic type, the microflora of nutrient type, thereby the system that makes can finish the task of organic removal.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection domain by claims.
Claims (4)
1. manifold type biological denitrification system, it is characterized in that: comprise preposition anoxic pond, Aerobic Pond, rearmounted anoxic pond, a SBR pond and the 2nd SBR pond, be provided with the floating filler of enzyme in described Aerobic Pond, a SBR pond and the 2nd SBR pond, described preposition anoxic pond is communicated with described Aerobic Pond, described Aerobic Pond is communicated with described rearmounted anoxic pond, and described rearmounted anoxic pond is communicated with a described SBR pond and the 2nd SBR pond respectively; Also be communicated with between described Aerobic Pond and the described preposition anoxic pond and be provided with one and be used for the mixed solution in the described Aerobic Pond is delivered to mixed-liquor return pump in the described preposition anoxic pond, a described SBR pond and the 2nd SBR pond also are communicated with and are provided with one for the sludge reflux pump that the mud in a described SBR pond and the 2nd SBR pond is delivered in the described preposition anoxic pond respectively with between the described preposition anoxic pond.
2. manifold type biological denitrification system as claimed in claim 1 is characterized in that: the floating filler of the enzyme in the described Aerobic Pond arranges for vertical.
3. manifold type biological denitrification system as claimed in claim 1 is characterized in that: the floating filler of the enzyme in a described SBR pond and the 2nd SBR pond and pool inner water flow path direction are 60 °-80 ° angle setting.
4. as claim 2 or 3 described manifold type biological denitrification systems, it is characterized in that: the floating filler of described enzyme is gasket packing, and the floating filler of the described enzyme in the same pond is each other for being arranged in parallel, and installing space is 10-50cm, and packing ratio is to account for the 40-60% that the pond holds.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183454A (en) * | 2013-04-02 | 2013-07-03 | 上海泓济环保工程有限公司 | Coupling type biological denitrification method and system thereof |
| CN108609735A (en) * | 2018-05-14 | 2018-10-02 | 济宁市孚源环保科技有限公司 | A kind of coal chemical industrial waste water depth AOA processing methods |
| CN114409056A (en) * | 2021-12-20 | 2022-04-29 | 徐州水处理研究所 | A/SBR + EM-based muddy water treatment method |
-
2013
- 2013-04-02 CN CN 201320161073 patent/CN203159405U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183454A (en) * | 2013-04-02 | 2013-07-03 | 上海泓济环保工程有限公司 | Coupling type biological denitrification method and system thereof |
| CN108609735A (en) * | 2018-05-14 | 2018-10-02 | 济宁市孚源环保科技有限公司 | A kind of coal chemical industrial waste water depth AOA processing methods |
| CN114409056A (en) * | 2021-12-20 | 2022-04-29 | 徐州水处理研究所 | A/SBR + EM-based muddy water treatment method |
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