CN100564282C - Remove the Waste Water Treatment and the method for carbon, nitrogen, phosphorus in the waste water - Google Patents
Remove the Waste Water Treatment and the method for carbon, nitrogen, phosphorus in the waste water Download PDFInfo
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- CN100564282C CN100564282C CNB2006100727670A CN200610072767A CN100564282C CN 100564282 C CN100564282 C CN 100564282C CN B2006100727670 A CNB2006100727670 A CN B2006100727670A CN 200610072767 A CN200610072767 A CN 200610072767A CN 100564282 C CN100564282 C CN 100564282C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
A kind of Waste Water Treatment of removing carbon in the waste water, nitrogen, phosphorus, comprise: first groove has methanobacteria, holds phosphorus bacterium and denitration bacterium, denitration bacterium tool denitrification part that can be removed organic carbon, hold phosphorus bacterium absorbed portion organic carbon and disengage phosphoric acid salt, methanobacteria metabolism organic carbon and produce methane gas; Second groove, be located at first groove after, utilize the denitration bacterium and hold the flowing water that goes out that the phosphorus bacterium is handled first groove; Three-flute, be located at second groove after, utilize and to hold the phosphorus bacterium organic carbon that first groove and second groove is adsorbed and carried out oxygen metabolism, nitrifier changes into nitrate nitrogen with ammonia nitrogen, removes the organic pollutant that second groove goes out flowing water remnants with other aerobic microbiological processing; One film is located in the three-flute or afterwards, to separate the various microorganisms and after treatment the flowing water that goes out.The invention still further relates to and utilize said system to remove the treatment process of carbon, nitrogen, phosphorus in the waste water, can reduce excess sludge production and reduce power consume problem.
Description
Technical field
The present invention relates to carbon, nitrogen, the organic Waste Water Treatment of phosphorus and method in a kind of removal waste water of novelty, it mainly is that methanobacteria is applied to Waste Water Treatment, can effectively reduce excess sludge production and reduce power consume problem.
Background technology
Early stage Waste Water Treatment design is to be purpose to reduce organic contamination mostly, avoids it to enter behind the water body because of oxygen in the microbiological degradation organism consume water, causes the water body dissolved oxygen to reduce and influence hydrobiont and survive.Yet in the sewage of city outside the organic matter removal, also contain abundant nitrogen, phosphorus, these compounds are the essential nutritive elements of various algal growns, under suitable temperature and sufficient sun exposure, abundant nitrogen, phosphorus will cause algae and water to grow, and water body is produced another kind of harm.
Tradition city sewage is many with Wastewater Treated by Activated Sludge Process, mainly carbon is a purpose in the sewage to remove, though general available primary treatment is removed the phosphorus (mainly combining with solids) of about 5-15%, remove about 10-25% phosphorus with the traditional biological treatment process, and it is ammonia nitrogen is converted into nitric nitrogen, yet still limited to the removal ability of whole nitrogen, phosphorus nutrition salt via the microorganism nitrification.At present; international have strict emission control standards to nitrogen, the formulation of phosphorus nutrition salt in the sewage of city mostly; though China's only useless to discharging (dirt) water to the public sewer of source quality water yield protective belt, is formulated the discharge stream water quality standard that total nitrogen concentration 15mg/L, total phosphorus concentration 2mg/L are arranged.Yet for effectively safeguarding the eubiosis of water body, prevent face of land receiving waters eutrophication problem, and along with China's public sewer is built universalness, the discharging of strict control nitrogen, phosphorus nutrition salt becomes inevitable control trend gradually.
Nitrogen is many in the sewage of city exists with ammonia nitrogen and organonitrogen form, no matter is aerobic or anaerobic biological treatment, and organonitrogen is an ammonia nitrogen by metabolic conversion easily.Traditional biological denitrificaion program promptly is to utilize microorganism under aerobic condition, and ammonia nitrogen is oxidized to nitric nitrogen, more under anaerobic, nitric nitrogen is reduced into nitrogen loss water-outlet body, reaches the purpose of sewage water denitrification.
Phosphorus compound then can following several modes be strengthened removing in the water: (1) chemical precipitation: by adding Ca, Fe, Al plasma and control pH generation precipitation, (2) assimilation of the phosphorus of microorganism, (3) phosphoric acid salt is held in the microorganism accumulation, (4) the reinforcement chemical precipitation of microbiological manipulation, wherein the microorganism dephosphorization is for beginning the technology of widespread use in recent years.Phosphorus is to store to hold the phosphoric acid salt particulate form in cell, can be as the source of cellular energy and phosphorus.In Sewage treatment systems, (Phosphate Accumulating Organism, peculiar microorganism PAO) can discharge phosphorus under the anaerobic state, can exceed phosphoric acid salt in the huge uptake water of psychological need under aerobic state a class to be referred to as to hold the phosphorus bacterium.Holding the phosphorus bacterium is not having under dissolved oxygen and the state that combines oxygen, decompose the acquisition energy with poly-phosphate saccharoid in the thalline, carrying out low-molecular-weight fatty acids such as acetate (from promptly existing in amphimicrobe hydrolysate or the raw waste water) absorbs and aggregates into Poly-salt (poly-β-hydroxybutyrate, PHB) be stored in the cell, the poly-phosphate saccharoid decomposes will make phosphorus be released in the sewage.Under good oxygen condition, holding the phosphorus bacterium is electron acceptor(EA) with oxygen, to be stored in the aerobic decomposition generate energy of endobacillary PHB or external carbon source, and utilize phosphoric acid salt in this energy excess ingestion sewage, in thalline, change into poly-phosphate, by removing surplus mud, can reach the purpose of sewage dephosphorization again.
In order to reach in the same Waste Water Treatment denitrogenation dephosphorizing simultaneously, basically need have anaerobism, anoxic and aerobic three different states of oxidation in the waste water system, anaerobism anoxic aerobic activated sludge process (Anaerobic-Anoxic-Oxide Activated Sludge Process, A
2O) (with reference to shown in Figure 1) commonly usedly contain the waste water of organic carbon, phosphorus and nitrogen with processing, make waste water through anaerobism, anoxic, biological treatment program such as aerobic, reach while denitrogenation, phosphor-removing effect.A
2The microorganism of O handling procedure with nitrifier, denitration bacterium, (Chemical oxygen demand, heterotrophic bacterium COD) is main with reducing chemical oxygen demand (COD) to hold the phosphorus bacterium.In anaerobic pond (or anaerobism groove), when the denitration bacterium, hold the phosphorus bacterium and carry out the dephosphorization denitrification process, must supply organic carbon to carry out the biochemical metabolism effect, and the denitration bacterium, hold remaining organism after the phosphorus bacterium dephosphorization denitrification process metabolism, then in Aerobic Pond (aerobic slot), utilize heterotrophic bacterium to decompose, Aerobic Pond will be played the part of and be provided ammonia nitrogen nitrated place with mineralization of organic material this moment, therefore at traditional A
2The normal running of O handling procedure can produce a large amount of excess sludges down, if design or misoperation are easy to cause the nitrifier loss and make denitrification functions clear; Zenon company is with membrane filtration technology and A
2The combination of O program though can solve the nitrifier losing issue, because power consumption is big and produce a large amount of mud, therefore still can't effectively overcome the insufficient problem of denitrogenation.
The present patent application people's TW No. 92132719 " Waste Water Treatment that contains organic pollutant " has disclosed a kind of Waste Water Treatment that contains organic pollutant, comprises an anaerobic reaction groove, an aerobic reaction groove, reaches a film separator tank; Wherein said aerobic reaction groove is arranged on after the anaerobic reaction groove, and described film separator tank is to be arranged at after the aerobic reaction groove, and this system utilizes biological treatment to remove organic pollutant in the waste water, and with divided thin film from the solid-liquid two-phase.This Waste Water Treatment that contains organic pollutant mainly can effectively be removed the organic pollutant (for example organic biochemical metabolite) in the waste water, solves film surface fouling and incrustation problem.Yet outside the contained material removal organic polluter, also contain carbon, nitrogen, phosphorus mostly simultaneously in the waste water.Therefore, develop a wastewater processing technology, can remove carbon in the waste water, nitrogen, phosphorus simultaneously and improve the conventional waste water disposal system power consumption big and produce the problem (A for example of a large amount of mud
2O), be the problem that present industry is worth research.
Summary of the invention
By as can be known aforementioned, Waste Water Treatment of the prior art is too high owing to chemical oxygen demand (COD) in the waste water dephosphorization denitrification process, and the processing that increases the weight of aerobic slot is born, cause power consumption to heighten and excess sludge also has too much phenomenon, therefore main purpose of the present invention is to provide a kind of Waste Water Treatment and the method that can remove carbon in the waste water, nitrogen, phosphor contaminant simultaneously, to reduce the consumption of power, with the generation that reduces excess sludge.
For reaching above-mentioned purpose, the invention provides a kind of Waste Water Treatment of removing carbon in the waste water, nitrogen, phosphor contaminant, comprise: first groove, comprise methanobacteria, hold phosphorus bacterium and denitration bacterium, described denitration bacterium has denitrification can remove the part organic carbon simultaneously, holding the phosphorus bacterium can the absorbed portion organic carbon and disengage phosphoric acid salt, methanobacteria energy metabolism organic carbon and produce methane gas; Second groove is arranged at after described first groove, and second groove mainly utilizes the denitration bacterium and holds the flowing water that goes out that the phosphorus bacterium is handled first groove, and described denitration bacterium has the function with the nitrate denitration, holds the phosphorus bacterium and has the function of releasing the phosphorus effect; Three-flute is arranged at after described second groove, and three-flute mainly comprises and holds phosphorus bacterium, heterotrophic bacterium and nitrifier, wherein holds the phosphorus bacterium and has the function of taking the photograph the phosphorus effect, and heterotrophic bacterium has the function of carrying out the de-carbon effect, and nitrifier has the function of carrying out nitrification; And a film, it is arranged in the described three-flute or afterwards, can separate the various microorganisms and after treatment the flowing water that goes out.
The Waste Water Treatment of carbon, nitrogen, phosphor contaminant in the removal waste water of the present invention, mainly be by in the dephosphorization denitrification system, add the methanation function, make its Waste Water Treatment possess the function of microorganism methanation, microorganism dephosphorization and microorganism denitration simultaneously, replace traditional A with methanobacteria
2The function of most of aerobic heterotrophic bacterium in the O system, remaining organism after the dephosphorization denitrification process metabolism is just carried out methanation at first groove, make aerobic slot (i.e. three-flute) mainly play the part of the place that the ammonia nitrogen nitrification is provided, to reduce the consumption of power, with the generation that reduces excess sludge.
In a specific embodiments of the present invention, described film is to be located in the three-flute, and when film was located in the three-flute, system of the present invention also was provided with the device that the mixed solution that can make three-flute can be back to first groove and/or the processing of second groove.
In another specific embodiments of the present invention, described film is to be located at after the three-flute, and can set up one the 4th groove and be used to place this film this moment.In the present embodiment, described system also is provided with the mixed solution that can make the 4th groove can be back to aforementioned first groove and/or the processing of second groove, and the mixed solution of three-flute can be back to the device that second groove is handled.
Preferably, described first groove is Sludge Bed pattern (sludge bed-type), and second groove is all with three-flute and mixes pattern (complete mixing-type) fully.If the denitration bacterium of first groove carries out the organic carbon source deficiency of denitrification process, also the part raw wastewater directly can be imported second groove and handle.
In a preferred embodiment, described film can be further with gas bleed, and this gas comprises biological aerogenesis (biogas) or air; Biological aerogenesis comprises nitrogen, methane, carbonic acid gas and hydrogen.Utilize biological aerogenesis flushing film can reduce pH value 0.2-1.0 unit in the water, prevent that further fouling from producing.
The present invention also provides a kind of treatment process of utilizing described Waste Water Treatment to remove carbon, nitrogen, phosphor contaminant in the waste water, comprise the following step: (a) waste water is imported one first groove, make methanobacteria in first groove, hold the phosphorus bacterium and the denitration bacterium is decomposed, organic pollutant and nitrate nitrogen in the absorption waste water; (b) flowing water that goes out with first groove imports second groove, makes the denitration bacterium in second groove and holds the flowing water that goes out that the phosphorus bacterium is handled described first groove, makes described denitration bacterium with the nitrate denitration, makes simultaneously to hold phosphorus bacterium adsorb organic compound and release the phosphorus effect; (c) flowing water that goes out with second groove imports three-flute, makes the phosphorus bacterium of holding in the three-flute take the photograph the phosphorus effect, makes heterotrophic bacterium carry out the de-carbon effect, makes nitrifier carry out nitrification; And (d) flowing water that goes out of three-flute is imported film, and utilize divided thin film from the various microorganisms and after treatment the flowing water that goes out, simultaneously, can utilize spoil disposal mechanism to remove phosphorous microorganism to reach the removal of phosphorus.
In a specific embodiments of the present invention, described film is to be located in the three-flute, and when film was located in the three-flute, the mixed solution of three-flute can be back to first groove and/or second groove is handled.
In another specific embodiments of the present invention, described film can be located at after the three-flute, is at this moment to set up one the 4th groove to be used to place this film.In the present embodiment, the mixed solution of the 4th groove can be back to aforementioned first groove and/or second groove is handled, and the mixed solution of three-flute can be back to second groove and handle.
The present invention also provides a kind of treatment process of removing carbon in the waste water, nitrogen, phosphor contaminant, mainly be to comprise to utilize methanobacteria, denitration bacterium, nitrifier, hold the phosphorus bacterium and aerobic heterotrophic bacterium carries out functions such as dephosphorization denitrogenation and organic matter removal with carbon, nitrogen, phosphor contaminant in the waste water, wherein said methanobacteria can be denitration bacterium, nitrifier, hold the phosphorus bacterium in the dephosphorization denitrification process, participate the metabolism organic carbon to carry out methanation, can reach the nitrated function with denitration of microorganism methanation, microorganism dephosphorization and microorganism simultaneously.
The treatment system and the method for carbon, nitrogen, phosphor contaminant in the removal waste water of improvement conventional art provided by the invention, utilize adding methanobacteria makes denitration bacterium, nitrifier, holds the organic carbon that produces in the phosphorus bacterium dephosphorization denitrification process and carry out methanation, can make the place that aerobic slot is mainly played the part of provides the ammonia nitrogen nitrification, can reduce power consumption, reduce each reactive tank volume and the generation that reduces excess sludge.
Description of drawings
Fig. 1 is traditional A
2O Waste Water Treatment synoptic diagram.
Fig. 2 is the embodiment synoptic diagram of Waste Water Treatment of the present invention.
Fig. 3 is the synoptic diagram of Waste Water Treatment in the embodiment of the invention.Among the figure, 1. represent raw wastewater (Raw water, RW), 2. represent polyfunctional reactant groove influent stream water (MFR influent, MFRINF), 3. represent the polyfunctional reactant groove go out flowing water (MFR effluent, MEREFF), 4. represent that the hypoxia response groove goes out flowing water (Anoxic effluent, AxEFF), 5. the expression finally go out flowing water (Permeate, PM), 6. represent film groove recirculation water (Membrane tank, MT).
Fig. 4 is the variation situation of each reactive tank average COD concentration in the embodiment of the invention.
Fig. 5 on average contains the variation situation of phosphorus concentration for each reactive tank in the embodiment of the invention.
Fig. 6 is the variation situation of the average ammonia nitrogen concentration of each reactive tank in the embodiment of the invention.
Fig. 7 is the variation situation of average the concentration of nitrate nitrogen of each reactive tank in the embodiment of the invention.
Fig. 8 is the variation situation of the contained PHA of microorganism in each reactive tank in the embodiment of the invention.
Fig. 9 is the variation situation of gas composition in the polyfunctional reactant groove in the embodiment of the invention.
Figure 10 is reactive tank cumulative volume of the present invention and conventional films-A in the comparative example of the present invention
2The volume ratio of O program aerator tank.
Figure 11 is in the embodiment of the invention, with the bacterium phase result in the molecular biosciences authenticate technology evaluation polyfunctional reactant groove.
Figure 12 is in the embodiment of the invention, with the bacterium phase result in the molecular biosciences authenticate technology evaluation hypoxia response groove.
Figure 13 is in the embodiment of the invention, with the bacterium phase result in the molecular biosciences authenticate technology evaluation aerobic reaction groove.
Main nomenclature among the figure:
1 multifunctional bio reactive tank, 2 hypoxia response grooves, 3 aerobic reaction grooves, 4 film separator tanks
Embodiment
The existing skill that the present invention continued to use is sincerely done quoting of emphasis formula at this, to help elaboration of the present invention.And relevant drawings is not proportionally drawn among the present invention, and its effect is only in performance constitutional features of the present invention.
The treatment system and the method for carbon, nitrogen, phosphor contaminant are improved traditional A in the removal waste water provided by the present invention
2The O handling procedure, in the dephosphorization denitrification system, add the methanation function, develop a multifunctional bio reactor, make it possess microorganism methanation, microorganism simultaneously and release the nitrated function with denitration of phosphorus and microorganism, promptly replace aerobic heterotrophic bacterium, remaining most of organism after the dephosphorization denitrification process metabolism is carried out methanation, make the place that aerobic slot is mainly played the part of provides the ammonia nitrogen nitrification with methanobacteria, to reduce the consumption of power, with the generation that reduces excess sludge.
Clearer and more definite, a specific embodiment of the treatment system 10 of carbon, nitrogen, phosphor contaminant in the removal waste water of the present invention, as shown in Figure 2, comprise: multifunctional bio reactive tank 1 (i.e. first groove), wherein contain methanobacteria, hold phosphorus bacterium and denitration bacterium, and carry out following effect in this groove: the denitrification of denitration bacterium is removed the part organic carbon simultaneously, hold phosphorus bacterium absorbed portion organic carbon and disengage phosphoric acid salt, and methanobacteria metabolism organic carbon and produce methane gas; Hypoxia response groove 2 (i.e. second groove), be arranged at after the described multifunctional bio reactive tank 1, by the denitration bacterium with hold the flowing water that goes out that the phosphorus bacterium is handled described first groove, describedly hold phosphorus bacterium absorbed portion organic carbon and disengage phosphoric acid salt, the denitrification of denitration bacterium is removed the part organic carbon simultaneously; Aerobic reaction groove 3 (i.e. three-flute), be arranged at after the hypoxia response groove 2, carried out oxygen metabolism by holding the phosphorus bacterium organic carbon that described polyfunctional reactant groove is adsorbed, nitrifier changes into nitrate nitrogen with ammonia nitrogen, handles with other aerobic microbiological and removes the organic pollutant that described hypoxia response groove 2 goes out flowing water remnants; And film separator tank 4, be arranged at after the described aerobic reaction groove 3, in order to separate various microorganisms with after treatment go out flowing water.
The nitrifier that takes off in the multifunctional bio reactive tank 1 can be earlier with the NO in the waste water under anaerobic state
3 -Change N into
2Hold the phosphorus bacterium and can release the phosphorus effect, the mode of action is as follows:
Organism+(poly-P)
n+ H
2O---＞PHB+PO
4 -3+ (poly-P)
N-1+ ...
Because releasing phosphorus effect meeting, described denitration cause the phosphoric acid salt rising nitrate in the multifunctional bio reactive tank 1 to reduce, and denitration release the phosphorus effect the ammonia nitrogen that contains in remaining organic carbon and the water, can in aerobic reaction groove 3, carry out removing in the de-carbon metabolic reaction of aerobic heterotrophic bacterium and the nitration reaction.If carbon content is too high in the water, will the nitrification efficiency of aerobic reaction groove 3 be reduced.Therefore need be in multifunctional bio reactive tank 1, increase the methanation function of methanobacteria, with the carbon content in the reductionization water, the major function that makes aerobic slot is only for providing the ammonia nitrogen nitrification, do not handle remaining organic carbon and need not expend unnecessary power, to reduce the consumption of power, can reduce the generation of excess sludge simultaneously.
Because the influent stream water of multifunctional bio reactive tank 1 can comprise the recirculation water of film separator tank 4, the backflow purpose is to reclaim microorganism, therefore multifunctional bio reactive tank 1 need not be provided with solid and gas liquid three phase separation equipment, and the reactive tank pattern of multifunctional bio reactive tank 1 is preferably closed Sludge Bed reactive tank, wherein the major function bacterium comprise methanobacteria that biochemical metabolism can produce methane, release the phosphorus effect hold the phosphorus bacterium, and (its metabolism organism and nitrate produce N to carry out the denitration bacterium of denitrification
2), the main biological aerogenesis that this place produces comprises CH
4, N
2With CO
2
The influent stream water of described hypoxia response groove 2 comprises multifunctional bio reactive tank 1 and goes out flowing water, the recirculation water that also can further comprise aerobic reaction groove 3, the backflow purpose is to reclaim nitrate to carry out denitrification, the reactive tank pattern of hypoxia response groove 2 is complete hybrid mechanical agitating tank, and its major function bacterium comprises the phosphorus effect of releasing of holding the phosphorus bacterium, the denitrification of denitration bacterium.
The influent stream of aerobic reaction groove 3 is that hypoxia response groove 2 goes out flowing water, the reactive tank pattern of aerobic reaction groove 3 is preferably complete hybrid aeration agitation groove, and the major function bacterium of aerobic reaction groove 3 comprises the nitrification of taking the photograph phosphorus effect, nitrifier of holding the phosphorus bacterium and the de-carbon effect of aerobic heterotrophic bacterium.
The phosphorus bacterium of holding in the removal waste water of the present invention in the treatment system of carbon, nitrogen, phosphor contaminant has the phosphorus of releasing effect at oxygen-free environment, then has the phosphorus of taking the photograph effect at aerobic environment; Methanobacteria then needs carry out methanation under the state of absolute anaerobic (nitrate-free), can't carry out methanation in that the state of aerobic (or nitrate is arranged) is next.
Another embodiment of the Waste Water Treatment 10 of carbon, nitrogen, phosphor contaminant in the described removal waste water, be when initially planting, implant anaerobic sludge and aerobic sludge respectively at described multifunctional bio reactor 1 and aerobic reaction groove 3, wherein said film separator tank 4 also can comprise microorganism is back to device in multifunctional bio reactor 1 and the hypoxia response groove 2.
Carbonic acid gas is the metabolic main by product of anaerobe, can cause that carbonate concentration increases in the system, if contain Ca, Mg, Fe or other heavy metal in the water, forms carbonic acid metal fouling (scaling) at film surface easily and causes film to block.After hypoxia response groove 2 of the present invention goes out flowing water and enters aerobic reaction groove 3, aerobic microbiological can be removed remaining organic pollutant, and propose effect because of the gas behind the aeration and the pH value in the water can be promoted 1-2 unit, make the former metal ion that anaerobic reaction groove 1 goes out flowing water that is dissolved in, under high pH value, in aerobic system, form carbonic acid metallic crystal thing; This carbonic acid metallic crystal thing and by the biological pectisation (bioflocculation) of aerobic microbiological, and embed in the glue plumage of aerobic microbiological, the metallic crystal thing forms fouling on the film of film separator tank 4 possibility reduced.When aerobic reactive tank 3 goes out flowing water and enters film separator tank 4, can wash by biological aerogenesis, use biological aerogenesis to wash and can reduce pH value 0.2-1.0 unit in the water, can further prevent the generation of carbonic acid metal fouling in the high pH valve system; In addition, if necessary, also can wash by air, and cooperate mineral acid (for example HCl) to downgrade the pH value of film separator tank 4, to reach the purpose that prevents that fouling from producing.
Below utilize embodiments of the invention to describe technology of the present invention and characteristics in detail, yet these embodiment are not in order to limit the present invention, any those of ordinary skill in the art, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.
Embodiment one, remove carbon, nitrogen, phosphor contaminant in the waste water with system of the present invention
The employed Waste Water Treatment of present embodiment as shown in Figure 3, its each groove is corresponding shown in Figure 2, wherein the denitration groove is that hypoxia response groove, aerator tank are the aerobic reaction groove.It is to be implanted into the granulating methanogen at the polyfunctional reactant groove that the microorganism of present embodiment system is planted; And denitration groove, aerator tank and film groove are all implanted suspension (Nonparticulating) denitration bacterium, are held the phosphorus bacterium, nitrifier and general de-carbon bacterium.
Each reactive tank fluidised form is Sludge Bed kenel (a non-complete mixed type) at the polyfunctional reactant groove, is complete mixed type at denitration groove, aerator tank and film groove.System's operating mode comprises: (1) raw wastewater (synthetic wastewater) extracts flow Q1 by the first multitube pump P1 and the film groove refluxes by second multitube pump P2 extraction flow Q3, after two bursts of mixing, enters the polyfunctional reactant groove; (2) the polyfunctional reactant groove goes out flowing water and flows into the denitration groove in the gravity mode; (3) influent stream of denitration groove has three strands, and what be respectively the polyfunctional reactant groove goes out flowing water, film groove recirculation water by the 4th multitube pump P4 extraction flow Q2 and Q
By-pass(optionally start, when the denitration bacterium carries out the organic carbon source deficiency of denitrification process, start); (4) aerator tank is communicated with the film groove and is considered as one, and its influent stream is the stream that of denitration groove, and it goes out stream and extracts flow Q1 discharging through film with the 3rd multitube pump P3.
System monitoring and control aspect, polyfunctional reactant groove have ORP and pH value meter; The denitration groove has the ORP meter; Aerator tank and film groove have DO and pH meter, and film goes out flowing water with tasimeter and electronic balance monitoring.
The multifunctional bio reactive tank adopts columnar flow (plug flow) design, microorganism is Sludge Bed and distributes, the multifunctional bio reactive tank is except that can accumulating more substantial microorganism, microorganism concn presents bottom height, the low distribution in top in the reactive tank, after waste water enters from the bottom, microorganism can be removed the oxidation state material fast, environment is changed into go back ortho states and carry out in order to methanation, and because of the multifunctional bio reactive tank is to design with the Sludge Bed pattern, itself has filtering feature, organic granular in the waste water easily is blocked, and can strengthen the function of organic matter removal.
The synthetic wastewater of present embodiment is formulated with glucose and acetic acid (carbon source), ammonium chloride and potassium primary phosphate, system adopts operate continuously, detect pH and ORP value in denitration groove and the multifunctional bio reactor simultaneously, and DO, pH and the ORP value of detecting aerator tank.
Through preliminary function test in two months, the about 200mg/L of chemical oxygen demand (COD) (COD value) of multifunctional bio reactive tank influent stream water, the result is as shown in Figure 4.Fig. 4 is that multifunctional bio reactive tank influent stream water (comprising former water and recirculation water), multifunctional bio reactive tank go out flowing water, denitration groove (being the hypoxia response groove) and go out chemical oxygen demand (COD) (COD) the concentration relationship figure that flowing water and film groove go out flowing water (finally going out flowing water).The multifunctional bio reactive tank goes out flowing water COD concentration between 90-100mg/L, the film groove goes out flowing water, the COD concentration that is membrane filtration liquid (permeate) is then between 10-20mg/L, this result shows that the Waste Water Treatment function of motion of carbon, nitrogen, phosphor contaminant in the removal waste water of the present invention is good, and the methanobacteria in the multifunctional bio reactive tank can effectively reduce COD to alleviate the processing burden of aerobic bacteria in the aerator tank.
Be the wastewater treatment state of confirming that microorganism is carried out at multifunctional bio reactive tank, denitration groove and aerator tank, going out flowing water, denitration groove at multifunctional bio reactive tank influent stream water, multifunctional bio reactive tank goes out the contain phosphorus concentration, ammonia nitrogen concentration, the concentration of nitrate nitrogen that flowing water and film groove go out flowing water and carries out routine monitoring, its result such as Fig. 5, Fig. 6, shown in Figure 7.Go out flowing water by Fig. 5 multifunctional bio reactive tank and have and higherly contain phosphorus concentration as can be known, the multifunctional bio reactive tank is mainly released the phosphorus function; Flowing water acid hydrochlorate concentration is a large amount of to reduce as can be known that its denitrification has substantial function and gone out by Fig. 6 denitration groove; The concentration of nitrate nitrogen that goes out flowing water by the film groove of Fig. 7 increases as can be known that the nitrifier of aerator tank has the essence nitrification, and it is required that the oxygen level that also can know aerator tank by inference can satisfy oxygen metabolism.
PHA (Poly Hydrox Acid) content by multifunctional bio reactive tank, denitration groove (anoxic groove) and the aerator tank (aerobic slot) of Fig. 8 can estimate each reactive tank phosphorus and accumulate the function of bacterium.Hold under the anaerobic environment that the PHA of phosphorus bacterium is synthetic mainly to be made of two kinds of reactions, first separates reaction for sugar, main purpose is for making enough also proper energies, second section then is that the picked-up short chain fatty acid synthesizes PHA and is stored in the body, and consume also proper energy, can form multi-form PHA and absorb different short chain fatty acids.Anaerobic zone phosphorus hold bacterium with body in the poly-phosphate scission of link with generate energy, and the synthetic PHA of huge uptake water Short-Chain Fatty Acids is stored in the cell, and accumulate bacterium energy is obtained in stored PHA metabolism, phosphoric acid salt excess ingestion in the water is changed into the poly-phosphate form be stored in the cell at aerobic zone phosphorus.As shown in Figure 8, the phosphorus bacterium of holding of multifunctional bio reactive tank is synthesized a large amount of PHA, holds the phosphorus bacterium at aerobic slot and then energy is obtained in stored PHA metabolism.
Be presented between the present embodiment effective date nitrogen (N in the gas composition in the polyfunctional reactant groove according to Fig. 9
2) become many gradually and methane (CH
4) gas reduces carbonic acid gas (CO gradually
2) then be maintained at lower concentration, show that methane gas reduces along with the methanobacteria metabolism in the biological aerogenesis of the Waste Water Treatment of carbon, nitrogen, phosphor contaminant in the removal waste water of the present invention, nitrogen then carries out raising in the denitrogenation at Waste Water Treatment.
Present embodiment also utilizes the molecular biosciences authenticate technology simultaneously, different probe (probe) is set identifies mutually that at the bacterium in polyfunctional reactant groove, hypoxia response groove and the aerobic reaction groove (specifying information of each probe can be referring to Raskin, L., Stromley, J.M., Rittmann, B.E. and Stahl, D.A. (1994) Group-Specific 16s Rrna Hybridization Probes to DescribeNatural Communities of Methanogens.Appl.Environ.Microbiol.60:1232-1240.).Wherein, the PAO probe can be identified and hold the phosphorus bacterium in the groove, MC1109 (5 '-GCAACATAGGGCACGGGTCT-3 ', 16S (1109-1128)), MSMX860 (5 '-GGCTCGCTTCACGGCTTCCCT-3 ', 16S (860-880)) can identify methanobacteria in the groove with MG1200 (5 '-CGGATAATTCGGGGCATGCTG-3 ', 16S (1200-1220)) probe.Its qualification result such as Figure 11, Figure 12, shown in Figure 13.The ratio of holding the phosphorus bacterium in the system is respectively 19.1%, 20.2% and 20.6% in polyfunctional reactant groove, hypoxia response groove and aerobic reaction groove.This result shows have the existence of the phosphorus of holding bacterium and its ratio roughly the same in three reactive tanks really in total system.And aspect methanobacteria bacterium phase ratio, the ratio that MC1109, MSMX860 and MG1200 probe are detected in the polyfunctional reactant groove is respectively 11.7%, 9.2% and 14.7%; In the hypoxia response groove, then be respectively 7.6%, 10.2% and 9.5%; In the aerobic reaction groove, then be respectively 10.7%, 6.3% and 10.3%.This result also shows, owing to contain granular methanobacteria, so there are a little higher than other two reactive tanks of ratio in its methanobacteria in the polyfunctional reactant groove.Can there be described microorganism really in this research and for the specific pollutants matter in the waste water (carbon and phosphorus) its relative processing effect be arranged in the understanding system after identifying through the molecular biosciences identification method.
Comparative example: system more of the present invention and traditional A
2
The reactive tank volume that the O system is required
This comparative example is the present invention and traditional A relatively
2The employed volume of O system supposes at first under the different organic loadings that the load sharing of phosphoric acid and nitric acid is not kept 20 and 40 kilograms, and the volume load of supposing the polyfunctional reactant groove again is 5kg COD/m
3-day (inefficient in the genus), the volume load of aerator tank is 1.5kg COD/m
3-day (genus high-level efficiency).Suppose the volume of denitration groove and film groove, this case and conventional films-A
2The O program is identical, film-A
2The anaerobism cell body of O is long-pending ignores.
The present invention and film-A
2The cell body volume ratio of O program more as shown in figure 10, reactive tank cumulative volume of the present invention (representing with empty circles among the figure) is the summation of polyfunctional reactant groove and aerator tank, with conventional films-A
2The volume of O system (representing with solid circles among the figure) is compared, when the organic waste water load is 2000kg COD/m
3During-day, the cumulative volume of reactive tank of the present invention is 500m
3And traditional reactive tank is about 1200m
3And load when organic waste water is 4000kg COD/m
3During-day, the cumulative volume of reactive tank of the present invention is about 1100m
3And traditional reactive tank is about 2500m
3, the cumulative volume that shows polyfunctional reactant groove of the present invention and aerator tank is much smaller than conventional films-A
2The volume of O program aerator tank.
The present invention and TW No. 92132719 " Waste Water Treatment that contains organic pollution " compare, its difference place is mainly as follows: the first, purpose is not identical: the present invention is for the treatment of the organic wastewater that contains carbon, nitrogen, phosphorus, contain simultaneously methane backeria in its polyfunctional reactant groove (i.e. the first groove anaerobism groove), hold the phosphorus bacterium, the denitration bacterium carries out the biological metabolism effect, its biological aerogenesis is CH4、N
2With CO2 And the latter The main function bacterium of anaerobism groove only contains methane backeria, is mainly used in except the carbon in anhydrating, so its anaerobism The main biological aerogenesis of groove is CH4With CO2 The second, the present invention compares for No. 92132719 with TW and increases Add an anoxic groove in order to carry out the denitration function, can promote whole Waste Water Treatment for nitrate ion Treatment effeciency, the purpose of removing the nitrogen in the organic wastewater to reach the present invention. Three, of the present invention good The oxygen reactive tank has the phosphorus of holding bacterium, denitration bacterium and aerobic heterotroph, can take the photograph simultaneously phosphorus, nitrated and de-carbon, And the latter's aerobic reaction groove major function bacterium only has heterotroph. Therefore, from the above mentioned as can be known the present invention Not identical with the Waste Water Treatment among No. the 92132719th, the TW.
In sum, the Waste Water Treatment of carbon containing, nitrogen and phosphorus pollution thing in the removal waste water of the present invention In, use the polyfunctional reactant groove that adds methane backeria to carry out methanation and can do at aerobic slot in advance With before, reduce the phosphorus content in the water, so that aerobic slot can mainly be provided by the Ammonia Nitrification effect that provides The place, with consumption, the volume that reduces each reactive tank and the product that reduces excess sludge that reduces power Give birth to amount.
Claims (19)
1. Waste Water Treatment of removing carbon in the waste water, nitrogen, phosphor contaminant comprises:
First groove comprises methanobacteria, holds phosphorus bacterium and denitration bacterium, and described denitration bacterium has denitrification can remove the part organic carbon simultaneously, and holding the phosphorus bacterium can the absorbed portion organic carbon and disengage phosphoric acid salt, methanobacteria energy metabolism organic carbon and produce methane gas;
Second groove is arranged at after described first groove, and second groove mainly utilizes the denitration bacterium and holds the flowing water that goes out that the phosphorus bacterium is handled first groove, and described denitration bacterium has the function with the nitrate denitration, holds the phosphorus bacterium and has the function of releasing the phosphorus effect;
Three-flute is arranged at after described second groove, and three-flute mainly comprises and holds phosphorus bacterium, heterotrophic bacterium and nitrifier, wherein holds the phosphorus bacterium and has the function of taking the photograph the phosphorus effect, and heterotrophic bacterium has the function of carrying out the de-carbon effect, and nitrifier has the function of carrying out nitrification; And
One film, it is arranged in the described three-flute or afterwards, can separate the various microorganisms and after treatment the flowing water that goes out.
2. Waste Water Treatment as claimed in claim 1, wherein, described first groove is the Sludge Bed pattern.
3. Waste Water Treatment as claimed in claim 1, wherein, described second groove is for mixing pattern fully.
4. Waste Water Treatment as claimed in claim 1, wherein, described three-flute is for mixing pattern fully.
5. Waste Water Treatment as claimed in claim 1, wherein, described film is to utilize gas bleed.
6. Waste Water Treatment as claimed in claim 5, wherein, described gas comprises biological aerogenesis or air.
7. Waste Water Treatment as claimed in claim 6, wherein, described biological aerogenesis comprises nitrogen, methane, carbonic acid gas and hydrogen.
8. Waste Water Treatment as claimed in claim 6 wherein, uses described biological aerogenesis flushing film, reduces pH value 0.2-1.0 unit in the water, prevents that further fouling from producing.
9. Waste Water Treatment as claimed in claim 1, wherein, described film is located in the three-flute, and this system is provided with the device that the mixed-liquor return that can make three-flute to described first groove and/or second groove handled.
10. Waste Water Treatment as claimed in claim 1, wherein, described film is located at after the three-flute, and this system has additional the 4th groove.
11. Waste Water Treatment as claimed in claim 10, wherein, this system is provided with mixed-liquor return to described first groove and/or second groove that can make the 4th groove and handles, and makes the device of mixed-liquor return to the second groove of three-flute.
12. Waste Water Treatment as claimed in claim 1, wherein, this system is provided with and can makes raw wastewater directly import the device of second groove, when the denitration bacterium of described first groove carries out the organic carbon source deficiency of denitrification process, raw wastewater directly can be imported second groove and handle.
13. a treatment process of utilizing the described Waste Water Treatment of claim 1 to remove carbon, nitrogen, phosphor contaminant in the waste water comprises the following step:
(a) waste water is imported first groove, make methanobacteria in first groove carry out the organism methanation, make the denitration bacterium decompose organic pollutant and nitrate nitrogen in the waste water, make simultaneously and hold phosphorus bacterium adsorb organic compound and release the phosphorus effect;
(b) flowing water that goes out with first groove imports second groove, makes the denitration bacterium in second groove and holds the flowing water that goes out that the phosphorus bacterium is handled described first groove, makes described denitration bacterium with the nitrate denitration, makes simultaneously to hold phosphorus bacterium adsorb organic compound and release the phosphorus effect;
(c) flowing water that goes out with second groove imports three-flute, makes the phosphorus bacterium of holding in the three-flute take the photograph the phosphorus effect, makes heterotrophic bacterium carry out the de-carbon effect, makes nitrifier carry out nitrification; And
(d) flowing water that goes out with three-flute imports film, utilizes divided thin film from the various microorganisms and after treatment the flowing water that goes out, and simultaneously, utilizes spoil disposal mechanism to remove phosphorous microorganism to reach the removal of phosphorus.
14. method as claimed in claim 13 wherein, when described film is located in the three-flute, handles mixed-liquor return to described first groove and/or second groove of three-flute.
15. method as claimed in claim 13 wherein, when described film is located at after the three-flute, is set up one the 4th groove.
16. method as claimed in claim 15 wherein, makes mixed-liquor return to described first groove and/or second groove of described the 4th groove handle mixed-liquor return to the second groove of three-flute.
17. method as claimed in claim 13 wherein, when the denitration bacterium of described second groove carries out the organic carbon source deficiency of denitrification process, directly imports second groove with raw wastewater and handles.
18. remove carbon in the waste water for one kind, nitrogen, the treatment process of phosphor contaminant, comprise and utilize methanobacteria, the denitration bacterium, nitrifier, hold the phosphorus bacterium with carbon in the waste water, nitrogen, phosphor contaminant carries out the dephosphorization denitrogenation and removes organism, make described methanobacteria the denitration bacterium, nitrifier, hold in the phosphorus bacterium dephosphorization denitrification process and participate the metabolism organic carbon to carry out the process of methanation, wherein, described methanobacteria is present in anaerobic environment and carries out methanation, described denitration bacterium is present in anaerobism, anaerobic environment is carried out denitrification, described nitrifier is present in aerobic environment and carries out nitrification, describedly hold the phosphorus bacterium and be present in anaerobism, anaerobic environment is released the phosphorus effect, and is present in aerobic environment and takes the photograph the phosphorus effect.
19. method as claimed in claim 18, it can reach the nitrated function with denitration of microorganism methanation, microorganism dephosphorization and microorganism simultaneously.
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| CN102491602A (en) * | 2011-12-20 | 2012-06-13 | 东南大学 | Sequencing batch domestic sewage treatment method for forcibly denitrifying and dephosphorizing, and recycling phosphorus |
| TWI448436B (en) * | 2012-05-30 | 2014-08-11 | Univ Tamkang | Biofilm filtration system |
| TWI586610B (en) * | 2015-01-15 | 2017-06-11 | 黎明興技術顧問股份有限公司 | Fluidized bed reactor for ammonia laden wastewater and method for treating ammonia laden wastewater |
| CN105174529B (en) * | 2015-07-20 | 2017-08-11 | 江苏省环境科学研究院 | A kind of processing method for the waste water containing butyl that surface treatment process is produced |
| CN114082288A (en) * | 2020-06-08 | 2022-02-25 | 广东赛珐生物科技有限公司 | New application of folic acid wastewater |
| CN111747612A (en) * | 2020-07-01 | 2020-10-09 | 无锡德林海环保科技股份有限公司 | Blue algae fishing and separating method |
| CN114671577B (en) * | 2022-05-30 | 2022-08-26 | 无棣永利盐业有限公司 | Denitrification purification method for mariculture wastewater |
| CN115626747A (en) * | 2022-11-18 | 2023-01-20 | 北京科净源科技股份有限公司 | System and method for deeply treating leather wastewater |
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