CN1326786C - Method and apparatus for treating organic waste - Google Patents
Method and apparatus for treating organic waste Download PDFInfo
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- CN1326786C CN1326786C CNB038242850A CN03824285A CN1326786C CN 1326786 C CN1326786 C CN 1326786C CN B038242850 A CNB038242850 A CN B038242850A CN 03824285 A CN03824285 A CN 03824285A CN 1326786 C CN1326786 C CN 1326786C
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- waste water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
A method for biologically treating an organic waste, characterized in that it comprises nitrifying the organic waste, followed by denitrification, and then solubilizing the sludge generated by the nitrification and the denitrification treatments; and an apparatus for biologically treating an organic waste, characterized in that it has means for nitrifying an organic waste, followed by denitrification, and for solubilizing the sludge generated by the nitrificaton and the denitrification treatments. The method can be used for biologically treating an organic waste from a sewage drain, feces and urine, or a production process in a food factory, a chemical plant or the like, and allows the marked reduction of the amount of excess sludge discharged out of a treating system and the decrease of the content of nitrogen-containing organic or inorganic components in a treated water discharged out of the treating system.
Description
Technical field
The present invention relates to handle the waste water that contains organic property material, for example method and the device of the organic waste water that discharges in the manufacturing processed of sewage, fecaluria, food factories, chemical plant etc. by bioremediation.
Background technology
In the past, treatment process as this organic waste water, adopt the method for the organic composition in the organic property of the bio-digestion mud, described method is that aerobic or the anerobe by the aerobic facture that is called activated sludge process, anaerobism methane digestion method etc. carries out.In the described method, for the excess sludge that constitutes by microbes biomass that generates through bio-digestion when organism being changed into gaseous constituents such as carbonic acid gas, biogas and untreated residual mud, on the one hand carry out solid-liquid body composition from suitably handling treatment solution with settling bath etc., on the other hand, usually excess sludge is handled by ocean dumping and land landfill.
Yet ocean dumping also relates to environmental disruption, therefore global environment protection cry more and more higher recently, this is in forbidden trend.In addition, in the landfill of land, landfill disposal ground guarantee the difficulty that also every year becomes.
Therefore, applicant, the method for the surplus sludge volume that produces as reducing biological processes organic waste water has applied for that the spy of Japan opens the patent of invention of flat 9-10791 communique record.
Described invention is, after will handling with the aerating apparatus aerobe from the organic waste water that the organic waste water storage facility is sent, solid-liquid body composition from the device in described wastewater solid liquid composition from being treating water and mud, and will send aerating apparatus back in the part of solid-liquid body composition isolating mud in device, re-use heat exchanger solid-liquid body composition carries out heat exchange to the excess sludge of isolating mud in device after, using solvable makeup to put at high temperature can dissolve, and liquefiable treating water is sent back to the method for aerating apparatus.
But, generally in the mud that biological treatment process produces, contain protein, therefore, exist and to put the treating water that the nitrogen compound of ammonia the waste water that is returned to aerating apparatus and so on discharges from device along with solid-liquid body composition from solvable makeup and together be discharged into outside problem.In addition, because generally contain phosphorus composition in the mud that biological treatment process produces, so also exist the phosphorus compound of putting to the waste water that aerating apparatus is discharged from solvable makeup to be discharged into outside problem with the treating water of discharging from device from solid-liquid body composition.
Summary of the invention
The present invention makes for solving such problem points, purpose is to provide a kind of treatment process and device thereof of organic waste water, when it can reduce the surplus sludge volume that is discharged to outside the treatment system significantly, and can reduce nitrogenous organic composition or the nitrogenous inorganic components that is discharged in the outer treating water of treatment system.
The present invention is a method of handling organic waste water with a kind of biological method, in order to reach such purpose, be provided at nitrated and denitrogenation processing organic waste water after, can dissolve treatment process by the organic waste water of nitrated and the mud that denitrogenation processing produces.
In addition, the invention provides and a kind ofly handle the device of organic waste water with biological method, and a kind of method of handling organic waste water is provided, it possesses the device of nitrated and denitrogenation organic waste water, to carrying out the liquefiable groove that dissolves by mud nitrated, that denitrogenation produces.
Like this, among the present invention, after organic waste water is carried out nitrated and denitrogenation processing, to being undertaken to dissolve processing by mud nitrated and that denitrogenation processing produces, therefore, can reduce the mud that nitrated and denitrogenation processing produces, thereby, have than reduced the nitrogenous organic composition that is discharged in the outer treating water of treatment system or the effect of nitrogenous inorganic components significantly in the past.
Nitrated and the denitrogenation processing of organic waste water is for example to carry out in reactive tank discontinuous formula.
Nitration treatment in this case is to be undertaken by for example aeration, carries out denitrogenation by stopping aeration.Preferably, can dissolve treatment solution before preceding 30 minutes～3 hours and be returned to reactive tank stopping aeration, more preferably, before 30 minutes～1 hour, carry out foldback.
Carry out the nitrated operation of nitrated, the denitrogenation processing of being undertaken by aeration at such intermittent type, and before stopping the specified time of its aeration, can dissolve treatment solution sends back under the situation of reactive tank, the proton source (BOD source) that is contained in can dissolve the organism handled in the mud as denitrogenation processing the time effectively can be utilized, and can be promoted denitrogenation.Thereby, can reduce the amount of medicament such as methyl alcohol that generally use as proton source, therefore, have the effect that can reduce the cost that its amount of medicament follows.
In addition, other modes of the nitrated and denitrogenation processing of organic waste water are to be undertaken by denitrogenation operation, secondary aeration operation in anaerobism treatment process, aeration operation, the anaerobic groove.In this case, the mud that solid-liquid body component separating goes out after secondary aeration operation is carried out and can dissolves processing.
And then other modes of the nitrated and denitrogenation processing of organic waste water are to be undertaken by the denitrogenation operation in the anaerobic groove, anaerobism treatment process, treatment process, the denitrogenation operation in the anaerobic groove, aeration operation in the exchange groove.In this case, the mud that solid-liquid body component separating goes out after the aeration operation is carried out and can dissolves processing.In addition, nitratedly in the aeration operation, carry out, and the nitrification liquid after nitrated will be returned to the denitrogenation operation.
And then other modes of the nitrated and denitrogenation processing of organic waste water are by anaerobism treatment process, denitrogenation operation in the anaerobic groove, and when the aeration operation was carried out, the oxygen that is dissolved in the treating water that can dissolve after the processing by reduction carried out.In this case, nitratedly also in the aeration operation, carry out.Nitrification liquid after nitrated will be returned to the denitrogenation operation.
And then other modes of the nitrated and denitrogenation processing of organic waste water are to be undertaken by anaerobism treatment process, the denitrogenation operation in the anaerobic groove, aeration operation.
Nitrated and denitrogenation processing as these, under the situation that comprises aerobic treatment process such as anaerobism treatment process or aeration processing, even contain phosphorus composition in mud that nitrated and denitrogenation processing produces etc., also available anaerobism handles dephosphorization, handles in conjunction with phosphorus with aerobic.
In addition, other purpose of the present invention is to provide the treatment process and the device thereof that can reduce the organic waste water that is discharged into the phosphorus composition in the outer treating water of system for handling.
In order to reach above-described purpose, the invention provides and be equipped with aforesaid treatment process device, organic waste water and device thereof with removal by the phosphorus in the mud of nitrated and denitrogenation processing generation.And, by dephosphorization apparatus is set, have the effect that prevents that aptly phosphorus composition from discharging outside system.
Description of drawings
Fig. 1 is the general block diagram of expression as the treatment unit of the organic waste water of an embodiment.
Fig. 2 is the skeleton diagram that carries out the intermittent type treatment process in treatment unit as shown in Figure 1.
Fig. 3 is the skeleton diagram that carries out other routine intermittent type treatment process in treatment unit as shown in Figure 1.
Fig. 4 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Fig. 5 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Fig. 6 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Fig. 7 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Fig. 8 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Fig. 9 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Figure 10 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Figure 11 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Figure 12 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Figure 13 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Figure 14 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Figure 15 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Figure 16 is the skeleton diagram that carries out the intermittent type treatment process in treatment unit as shown in figure 15.
Figure 17 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Figure 18 is the general block diagram of the treatment unit of the organic waste water in other embodiments of expression.
Embodiment
Below, based on accompanying drawing embodiments of the present invention are described.
(embodiment 1)
The treatment unit of the organic waste water of present embodiment as shown in Figure 1, is by reactive tank 1 and can dissolves groove 2 and constitute.Wherein carry out the processing of organic waste water in reactive tank 1 discontinuous formula.As the organic waste water of former water, use sewage in the present embodiment.
In the present embodiment, the inflow of former water, reaction, precipitation, draining, spoil disposal etc. are handled as 1 circulation.More particularly, as shown in Figure 2, in the inflow receiving trap of former water, cycle through precipitation that aeration, stirring, aeration, stirring, aeration, aeration stop to carry out, solid-liquid body composition and carry out from, the operation that can dissolve processing.In this case, aeration is that aerobic is handled, and stirring is that anaerobism is handled.The operation, precipitation, the solid-liquid body that carry out repetition aeration and stirring in reactive tank 1 become isolating operation, carry out dissolving the operation of processing in can dissolving groove 2.The treatment time that can adjust each operation carried out the intermittent type that flow into a series of wastewater treatment of discharging treating water from receiving former water of (for example 2～4 times) for several times and handles in 1 day, but also can in 1 day, carry out about 1 time, or the intermittent type that carried out in 3 days about 2 times is handled also harmless according to the treatment time of each operations of adjustment such as property quality and quantity of waste water.
In the present embodiment, in the aeration operation, carry out nitration treatment, in stopping the agitating procedure of aeration, carry out denitrogenation processing by denitrifier by nitrifier., stop aeration, precipitated, the separation of mud thereafter.Clear liquor above the discharging is kept in the reactive tank 1 and the part of sedimentary mud handled for next intermittent type, and the part of excess sludge supplied to can dissolve groove 2 and carry out dissolving processing.Preferably, will can dissolve the waste water of handling can dissolving groove 2, as shown in Figure 2, be returned to the agitating procedure of the 1st step.Also have, preferably, in nitrated operation, in order to keep the nitration reaction of nitrifier, getting pH is more than 7, and especially preferred is that getting pH is 7.0～8.0.In addition, preferably, design temperature is 15 ℃～35 ℃, more preferably, is set at 25 ℃～35 ℃.Can dissolve treatment solution before 30 minutes to 3 hours before the aeration that stops the 1st step and be returned to reactive tank 1, preferably, before 30 minutes to 1 hour, carry out.Cycle index depends on the BOD-SS load of reactive tank.Generally, preferably, during heavy-duty service (BOD-SS load: 0.2～0.4kgBOD/kgSS days), mode 3～4 times, that carry out the nitrated denitrogenation processing of aeration and stirring is moved to circulate.In addition, preferably, during underrun (BOD-SS load: 0.03～0.05kgBOD/kgSS days), mode 2～3 times, that carry out nitrated denitrogenation processing is moved to circulate.
Can dissolve groove 2, as mentioned above, be to be used for dissolving the mud of supplying with from reactive tank 1, and described dissolving is can dissolve enzyme by proteolytic enzyme etc. to carry out.The described enzyme that dissolves is by thermophile bacteria, such as bacillus (
Bacillus) belong to aerobic thermophile bacteria such as bacterium and produce.Such aerobic bacteria is to be kept in advance can dissolve in the groove 2, or is included in advance supply with to give and can be dissolved in the mud of groove 2, or adds also passable separately can dissolving groove 2.
Belong to bacterium as bacillus (Bacillus), can use bacstearothermophilus (Bacillusstearothermophilus), good high-temperature bacillus (Bacillus thermoleovorans) etc., preferably, use bacillus (Bacillus) SPT2-1[FERM P-15395], bacillus (Bacillus) SPT3[FERM P-19226], GeobacillusSPT4[FERM P-08452], GeobacillusSPT5[FERM P-08453], GeobacillusSPT6[FERM P-08454], GeobacillusSPT7[FERM P-08455] etc.
In can dissolving groove 2, mud is decomposed by aerobic bacteria like this, still, also can cooperate known in the past decomposing such as ozone, electrolysis, thermokalite decomposes, enzyme decomposes the whole bag of tricks such as (for example, adding proteolytic enzyme, lipase, Glycosylase and so on alone or in combination) to be implemented.
In can dissolving groove 2, under biological hot conditions, carry out dissolving of anaerobism or aerobic organic property mud.In this case, the anaerobism or the aerobic microbial inoculant thalline (thermophile bacteria) that are used under the high temperature be, for example, by culturing micro-organisms in the past anaerobism or the aerobic treatment trough thing.In addition, at the optimal temperature that can dissolve groove 2, preferably, operate under the big condition in 50～90 ℃ of temperature ranges, but the kind according to thermophile bacteria is different and different, and described thermophile bacteria is decomposed the organic property solids in the mud that is contained in the pyroprocessing object, for example, if during from the isolating thermophile bacteria of excess sludge of sewage, just under being 55～75 ℃ the hot conditions of scope, temperature operates, preferably, under 60～70 ℃, make the dissolved reaction undertaken by microorganism (thermophile bacteria) and act on the while according to these two of the physical chemistry of heat decomposition hot in nature and give full play to effectively.
Whichsoever, preferably,, temperature range is set at 50～90 ℃, so that the dissolved reaction of being undertaken by microorganism (thermophile bacteria) and give full play to effectively simultaneously by these two effects of physical chemistry thermolysis that heat is carried out according to the kind of microorganism.Preferably, especially when adopting the Bacillus bacteria of aerobic thermophile bacteria, temperature range is set at 55～70 ℃, especially preferredly is 60～65 ℃.In addition, preferably, when adopting the Geobacillus of aerobic thermophile bacteria, temperature range is set at 55～65 ℃.
In addition, set pH, the pH scope is set in 6～9 scope according to the kind of microorganism, preferably, 7～8 scope.This is can to dissolve treatment solution nitrated or denitrogenation processing are not produced bad influence in order to make.And then, preferably, fall the ammonia that the decomposition by mud produces in order to decompose (nitrated) to a certain extent, can dissolve to handle and carry out aerobic and handle.
In the present embodiment, before stopping aeration and handling 30 minutes～3 hours, preferably, before 30 minutes～1 hour, can dissolve and handle mud and be returned to reactive tank in first (at first) aeration treatment process.Thus, can dissolve the proton source (BOD source) of organism during of handling mud and effectively utilize being contained in, thereby promote denitrogenation as denitrogenation processing.Thereby, can reduce general amount of medicament such as methyl alcohol as proton source, therefore, can reduce the cost that its amount of medicament is followed.
Preferably, the dissolved treatment time in this case is 12～72 hours, more preferably, 18～48 hours, especially preferredly is 20～36 hours.Also have, can dissolve the treatment time is because set according to the Waste Water Treatment and the liquefiable combined method of mud of carrying out the nitrated and denitrogenation processing of waste water, so followingly also describe by each embodiment.
In addition, the dissolving of the mud of thermophile bacteria with generation ammonia, but be contained in can dissolve the ammonia of handling mud be in the aeration operation, be oxidized to can denitrogenation nitrite nitrogen and nitric nitrogen.As a result, carry out denitrogenation processing just fully, deleterious nitrogen component is unlikely to outside the system of being discharged into.
In the aeration operation in the present embodiment, keep organism, because ammonia oxidation is extremely important to the step of nitrous acid and nitric acid, therefore, setting can be dissolved and be handled mud and be returned to the opportunity of the reactive tank in first aeration treatment process and can dissolve the treatment time most important.
(embodiment 2)
Present embodiment, be and above-mentioned the 1st embodiment identical intermittent treatment process, treatment unit by reactive tank 1 with can dissolve that groove 2 constitutes and in the inflow of former water receives, cycle through precipitation that aeration, stirring, aeration, stirring, aeration, aeration stop to carry out, solid-liquid body composition from, can to dissolve this point that the operation of processing carries out identical with embodiment 1.Thereby, in the present embodiment, also in the aeration operation, carry out the nitration treatment of being undertaken by nitrifier, in stopping the agitating procedure of aeration, carry out the denitrogenation processing of being undertaken by denitrifier.
But in the present embodiment, as shown in Figure 3, the treating water that can dissolve after the processing is returned to first (at first) agitating procedure, and is different with the situation that is returned to the aeration operation in embodiment 1 at this point.
In the present embodiment, can dissolve treatment solution and be returned to reactive tank 1 in the denitrogenation operation, and therefore, effectively utilize being contained in the proton source of organism during that to dissolve treatment solution, thereby promote denitrogenation as denitrogenation processing.In this case, preferably, be contained in the ammonia that can dissolve processing in order to reduce, can dissolve in the processing described ammonia oxidation to nitrite nitrogen and nitric nitrogen, specifically, can consider the dissolved treatment time also longer, preferably than embodiment 1,24～72 hours, more preferably 36～72 hours.
Especially, in the present embodiment, will directly be returned to the denitrogenation processing operation, and therefore, can reduce the amount of medicament such as methyl alcohol of general use as the organism of proton source, thereby, the effect that reduces the cost of following amount of medicament had.As mentioned above, can be combined in mud by nitrated and denitrogenation processing and can dissolve processing waste water, perhaps, by when making up, the most suitably setting each treatment process, when the growing amount of excess sludge can be reduced significantly, has the effect that keeps good water quality treatment.
Also have, mud is carried out liquefiable microorganism of dissolving enzyme, preferably, use thermophile bacteria, especially use disclosed various Bacillus bacterias (Bacillus) and Geobacillus genus bacterium in embodiment l as producing.
In addition, the temperature when hope can be dissolved and be handled is set to identical with embodiment 1 50～90 ℃, preferably, under the situation of using the such aerobic thermophile bacteria of bacillus, the design temperature scope is 55～70 ℃, more preferably, and 60～65 ℃ scope especially.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
In addition, the temperature of nitrated operation, pH etc. are also identical with embodiment 1.
(embodiment 3)
The treatment unit of the organic waste water in the present embodiment as shown in Figure 4, has: fermented liquid storagetank 3, anaerobism groove 4, aerator tank 5, anaerobic groove 6, secondary aerator tank 7, a settling bath 8 and can dissolve groove 2.In the present embodiment, as the pending liquid that is stored in fermented liquid storagetank 3, use to the leftovers of discharging from food factories carry out decomposing gas (methane fermentation) and fermentation and acid-fermentation liquid.Except that above-mentioned pending liquid, also have sewage etc. to be fed into the anaerobism groove.
An aerator tank 5 is used for carrying out the aerobe processing by the treatment solution that aeration agitation was handled above-mentioned anaerobism groove 4 anaerobism, the organism of oxygenolysis in the treating water that anaerobism is handled, or the ammonia of nitrated inflow.Described aerator tank 5 keys are to possess aerating apparatus, and its aerating apparatus need not be asked more, can use such as air bell.Preferably, in order to allow the aerobic digest and decompose, aeration is handled under the room temperature of the air flow of 0.1～0.5vvm, but also can surpass described air flow, and more handle under the pyritous condition according to load.The pH that regulates pending liquid is, preferably, 5.0～8.0, more preferably, regulating pH is 7.0～8.0.
Settling bath 8 is to make for the solid-liquid body becomes to be separated in the treatment solution of carrying out a biological disposal upon in the above-mentioned secondary aerator tank 7.Isolated liquid portion utilizes or is discharged as treatment solution, with the part of the mud of the solid-state part of precipitation separation, when supplying to the dissolved groove 2 of next, a remaining part is returned to anaerobism groove 4.
Below, according to the treatment unit of above-mentioned formation, two aspects of leftovers that sewage and food factories are discharged handle the embodiment of treatment process describe.
At first, the leftovers of discharging from food factories are carried out decomposing gas.Described decomposing gas is by carrying out such as acid-fermentation and methane fermentation.Obtain acid-fermentation liquid by such decomposing gas, and its acid-fermentation liquid is stored in the fermentation storagetank 3.Acid-fermentation liquid is supplied to anaerobism groove 4 from described fermented liquid storagetank 3.In addition, also supply with sewage to anaerobism groove 4.
Also have, the treating water that anaerobism is handled supplies to an aerator tank 5 of next operation, carries out aerobic when carrying out aeration agitation and handles.Handle and carry out nitration treatment by carrying out described aerobic through aeration agitation.
Secondly, the treatment solution that will handle in an aerator tank 5 supplies to anaerobic groove 6.Then, in anaerobic groove 6, carry out denitrogenation processing.
In addition, acid-fermentation liquid is supplied to anaerobic groove 6 from fermented liquid storagetank 3.This be for acid-fermentation liquid the proton source (BOD source) during as denitrogenation effectively utilize, thereby promote denitrogenation.
To in anaerobic groove 6, supply to secondary aerator tank 7 by the treatment solution of denitrogenation processing, and when carrying out aeration agitation, carry out aerobic and handle.In described secondary aerator tank 7, handle and carry out nitratedly, remove BOD by aeration.
Secondly, treatment solution that will aeration was handled in secondary aerator tank 7 supplies to settling bath 8.In described settling bath 8, carry out solid-liquid body composition from, and separated liquid component will utilize again or be discharged as treatment solution, and will separate, the part of the mud of sedimentary solid-state part supplies to and can dissolve groove 2, mud here can be dissolved by the thermophile bacteria aerobic.
Also have, a remaining part in the sedimentary mud is returned to anaerobism groove 4 as foldback mud.
The mud that will can dissolve processing in can dissolving groove 2 is returned in the described anaerobic groove 6 to be handled once more.Then, the following processing that will circulate repeatedly: the denitrogenation processing in anaerobic groove 6; Aeration in secondary aerator tank 7 is handled; Solid-liquid body component separating in settling bath 8; In the dissolved processing that can dissolve in the groove.
In the present embodiment, use continous way to carry out dissolving of mud, and do not use above-mentioned embodiment 1 such intermittent type to handle, still, using such continous way to carry out under the liquefiable situation of mud, can try to achieve HRT based on the useful capacity that flows into the water yield and reactive tank.That is, calculate HRT based on the formula of HRT (residence time in the hydromechanics)=V/Q (V: reactive tank capacity, Q: flow into the water yield).
Need not many opinions, in order to reach dissolving of extend of hope, the volume that dwindles reactive tank can shorten HRT.Thereby, but determine solution time according to HRT, but tediously long solution time avoided.
Preferably, select HRT according to the generation and the secretory volume of thermophile bacteria for maximum HRT.If set like this HRT, then can effectively utilize and generate and excretory mud can dissolve enzyme and reacts.Usually, preferably, HRT is set at 12～72 hours, but the viewpoint of the ammonia from the oxidation dissolving liquid more preferably, is set at 24～72 hours, from keeping the densification that solvable makeup puts and improving both of water quality treatment, most preferably, be set at 36～48 hours.
In addition, can dissolve groove 2 HRT in addition, be 0.5～1.5 hour in anaerobism groove 4, in an aerator tank 5, be 2～6 hours, be 0.5～3 hour in anaerobic groove 6, be 0.5～2 hour in secondary aerator tank 7, preferably, be 0.5～1 hour in anaerobism groove 4, in an aerator tank 5, be 3～5 hours, be 1～2 hour in anaerobic groove 6, be 0.5～1.5 hour in secondary aerator tank 7.
In addition, mud is carried out liquefiable microorganism of dissolving enzyme, use thermophile bacteria, preferably, use especially disclosed various bacillus (Bacillus) genus bacterium and Geobacillus genus bacterium in embodiment 1 as producing.
In addition, it is desirable for the temperature that to dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
In addition, set the temperature, pH etc. of the nitrated operation identical with embodiment 1.
(embodiment 4)
In the present embodiment, as shown in Figure 5, at settling bath 8 and can dissolve between the groove 2, that is, be provided with thickner 9 flowing into the path that can dissolve groove 2 from settling bath 8.
In the present embodiment, will from settling bath 8, supply to thickner 9 by isolating mud.In thickner 9, for example, because gravitational settling, mud is concentrated.As method of enrichment, except adopting the gravitational settling method, also can adopt and float concentrated, evaporation concentration, membrane concentration, flocculation agent adds, the trommel type concentrates or utilize centrifugal force method of enrichment.Can dissolve rate from the mud that improves thermophile bacteria, densification can dissolve the viewpoint of groove, and it is 99 weight % following (sludge concentration is more than the 1 weight %) that the enrichment factor of mud preferably is concentrated to water ratio.Concentrated solution after concentrating will be fed into and can dissolve groove 2.But the sludge concentration of this moment preferably, is no more than 5 weight %.Because, in case surpass 5 weight %, discharging when can become difficulty with pump, bubble can significantly increase in the mud in the time can dissolving that aerobic is handled in the groove.
Anaerobism in anaerobism groove 4 handles, the aeration in aerator tank 5 is handled, the denitrogenation processing in anaerobic groove 6, the aeration in secondary aerator tank 7 are handled, the solid-liquid body composition in settling bath 8 is identical with embodiment 3 from, dissolved processing in can dissolving groove 5, the Therefore, omited explanation.
In addition, mud is carried out liquefiable microorganism of dissolving enzyme, use thermophile bacteria, preferably, use especially disclosed various bacillus (Bacillus) genus bacterium and Geobacillus genus bacterium in embodiment 1 as producing.
In addition, it is desirable for the temperature that can dissolve when handling and be set to identical with embodiment 1 50～9 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, and especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 5)
In the present embodiment, as shown in Figure 6, can dissolve between groove 2 and the anaerobic groove 6, promptly be provided with nitrifying groove 10 to the path that anaerobic groove 6 flows into from dissolving groove 2.By being provided with such nitrifying groove 10, but the ammonia that is contained in the mud dissolving liquid is converted into nitrous acid or nitric acid.
In addition, in the present embodiment, the part of mud is returned to outside the anaerobism groove 4 from settling bath 8, also remaining mud is supplied to nitrifying groove 10 via dissolving groove 2.
The HRT of the dissolved groove in the present embodiment preferably, can dissolve the generation of enzyme and the secretory volume HRT when maximum according to mud and select, and it is to be secreted by thermophile bacteria that wherein said mud can dissolve enzyme.When setting HRT like this, can effectively utilize generation and excretory mud can dissolve enzyme and react.Usually, HRT is set at 12～72 hours, but in the present embodiment, because nitrifying groove 10 is just arranged, so can just can dissolve treatment solution under the residual state that ammonia arranged in the treatment solution and be injected in the nitrifying groove 10, from the above considerations can dissolving in the step that can dissolve the groove back, preferably, HRT is set at 18～48 hours, most preferably, is set at 20～36 hours.
In addition, the operational conditions of nitrifying groove 10, preferably, under 25～35 ℃, pH is 7.0～8.0 scope.Can dissolve ammonia oxidation in the waste water to nitrous acid and nitric acid with being contained in mud, and be necessary to keep in the denitrogenation processing of organism operation secondarily as proton source, for above this some consider, the HRT of nitrifying groove 10, preferably, 30 minutes～3 hours.
Anaerobism in the anaerobism groove 4 handles, the aeration in aerator tank 5 is handled, denitrogenation processing, the aeration in the secondary aerator tank 7 in the anaerobic groove 6 are handled, the solid-liquid body composition in the settling bath 8 is identical with embodiment 3 from, the dissolved processing that can dissolve in the groove 2, the Therefore, omited explanation.
In addition, mud is carried out liquefiable microorganism of dissolving enzyme, use thermophile bacteria, preferably, use especially disclosed various bacillus (Bacillus) genus bacterium or Geobacillus genus bacterium in embodiment 1 as producing.
And then, it is desirable for the temperature that can dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 6)
In the present embodiment, be provided with 2 anaerobic grooves, and aerator tank only is provided with 1, at this point, with embodiment 3 to 5 indistinctions.
That is, the treatment unit of present embodiment as shown in Figure 7, has: formerly anaerobic groove 11, anaerobism groove 4, exchange groove 12, anaerobic groove 6, aerator tank 13, settling bath 8, thickner 9 and can dissolve groove 2.
In the present embodiment, will flow into the former water supply of anaerobism groove 4 to exchange groove 12.
Described exchange groove 12, the denitrogenation degree that can rise according to the sewage that flows into changes from the function in the path of aerator tank 13 foldback mud and treating water (nitrification liquid).The big period of degree that for example needs denitrogenation in summer etc., it makes the phosphorus reaction that removes that is used for promoting foldback mud as the anaerobism groove, wait the period that needs the denitrogenation degree low in the winter time, it makes the denitrification reaction that is used for promoting being returned to from former water and aerator tank 13 nitrification liquid of anaerobic groove 11 or exchange groove 12 as the anaerobic groove.
Like this, after handling in exchange groove 12, former water is fed into and carries out denitrogenation processing in the anaerobic groove 6, and then, be fed into aerator tank 13 and carry out the aerobe processing by aeration agitation.Secondly, be fed into settling bath 8 from aerator tank 13, and in settling bath 8, carry out solid-liquid body composition from, then isolated liquid portion is suitably discharged.In addition, with separate, the mud of sedimentary solid-state part supplies to thickner 9, supply to then and can dissolve groove 2.In this case, aerator tank 13 has the BOD of removal and nitrated function.The treatment solution of aerator tank 13 is that the part of nitrification liquid is returned to anaerobic groove 11 formerly, preferably, is returned to (not shown) anaerobic groove 6.
And then, thereby the mud that will carry out dissolving processing in can dissolving groove 2 is returned to exchange groove 12, at exchange groove 12, anaerobic groove 6, aerator tank 13, settling bath 8, thickner 9, can dissolve circulation in the groove 2.Also have, isolating mud also supplies to formerly in the anaerobic groove 11 except that supplying to thickner 9 in settling bath 8.In addition, from anaerobism groove 4 or exchange groove 12 also to anaerobic groove 11 foldback mud formerly.
Preferably, the HRT that setting can be dissolved groove 2 for embodiment 3 identical 12～72 hours, more preferably, be set at 24～72 hours, most preferably, be set at 36～48 hours.
Can dissolve groove 2 HRT in addition, preferably, in anaerobic groove 11 formerly, be 0.5～1.5 hour, be 0.5～2 hour in anaerobism groove 4, in exchange groove 12, be 0.5～1 hour, be to be 3～6 hours in 1～3 hour, aerator tank 13 in anaerobic groove 6, more preferably, be 0.5～1 hour in anaerobic groove 11, be 0.5～1 hour in anaerobism groove 4, be 0.5～1 hour in the groove 12, be to be 3.5～5 hours in 1～2 hour, aerator tank 13 in anaerobic groove 6 in exchange.
In addition, mud is carried out liquefiable microorganism of dissolving enzyme, use thermophile bacteria, preferably, use especially disclosed various bacillus (Bacillus) genus bacterium or Geobacillus genus bacterium in embodiment 1 as producing.
In addition, it is desirable for the temperature that to dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of Bacillus bacteria, preferably, the design temperature scope is 55～70 ℃, more preferably, 60～65 ℃ of scopes especially.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
Also have, the treatment unit in the present embodiment has been equipped with thickner 9, yet being equipped with thickner 9 is conditions of necessity of the present invention.
(embodiment 7)
In the present embodiment, as shown in Figure 8, the step that can dissolve groove 2 back is provided with nitrifying groove 10, and is in this, identical with described embodiment 6.
That is, in the present embodiment, the mud that carried out dissolving processing in can dissolving groove 2 is fed into nitrifying groove 10, and is returned to exchange groove 12 after in nitrifying groove 10 ammonia in the mud being converted to nitrous acid or nitric acid.Also have, isolating mud removes with embodiment 6 and is fed into thickner 9 in the same manner and is returned to formerly the anaerobic groove 11 from settling bath 8, in the present embodiment, also directly supplies to nitrifying groove 10.
Other formation and treatment step are identical with embodiment 6, the Therefore, omited explanation.
Also have, can dissolve the HRT of groove 2, preferably, be set to and embodiment 5 identical 12～72 hours, more preferably, be set at 18～48 hours, most preferably, be set at 20～36 hours.
In addition, mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria as producing, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
And then, it is desirable for the temperature that can dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 8)
Treatment unit in the present embodiment as shown in Figure 9, is equipped with dissolved oxygen reduction groove 16, anaerobism groove 4, anaerobic groove 6, aerator tank 13, settling bath 8, thickener 9 and can dissolves groove 2.In the present embodiment,, also will reduce the treating water of handling in the mode that reduces dissolved oxygen in the groove 16 and supply to anaerobic groove 6 at dissolved oxygen except that the treating water that will handle in anaerobism groove 2 supplies to the anaerobic groove 4.
Supply to anaerobic groove 6 and carry out the treating water of denitrogenation processing, and then be fed into aerator tank 13 and carry out aerobic by aeration agitation and handle, then, supply to settling bath 8 carry out solid-liquid body composition from.This moment, isolating liquid component was suitably discharged, and separated solids component is mud when being fed into thickner 9, and the part of mud is returned to aerator tank 13.
In addition, by being that the part of nitrification liquid reduces groove 16 via dissolved oxygen and is returned to anaerobic groove 6 with the treatment solution in the aerator tank 13, carry out the denitrogenation processing of nitrification liquid.And, can reduce the dissolved oxygen of nitrification liquid by nitrification liquid being injected into the anaerobic groove, make nitric efficiency stable.
And then spissated mud is fed into and can dissolves groove 2 and can be dissolved processing in thickner 9, thereafter, is returned to dissolved oxygen and reduces groove 16.
Also have, the mud of supplying with to anaerobic groove 6 also is returned to anaerobism groove 4, then, is returned to dissolved oxygen from anaerobism groove 4 and reduces groove 16.
Preferably, the HRT that setting can be dissolved groove 2 for embodiment 3 identical 12～72 hours, more preferably, be set at 24～72 hours, most preferably, be set at 36～48 hours.
Setting can be dissolved the HRT beyond the groove 2, preferably, it is to be to be to be 3～6 hours in 1～3 hour, aerator tank 13 in 0.5～2 hour, anaerobic groove 6 in 0.15～0.3 hour, anaerobism groove 4 that dissolved oxygen reduces in the groove 16, more preferably, to reduce in the groove 16 be to be to be to be 3.5～5 hours in 1～2 hour, aerator tank 13 in 1～1.5 hour, anaerobic groove 6 in 0.17～0.25 hour, anaerobism groove 4 to dissolved oxygen.
In addition, mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria as producing, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
And then, it is desirable for the temperature that can dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 9)
In the present embodiment, as shown in figure 10, be provided with on this point of nitrifying groove 10 with above-mentioned embodiment 8 inequality in the later step that can dissolve groove 2.
That is: in the present embodiment, the mud that can dissolve processing in can dissolving groove 2 supplies to nitrifying groove 10, and in nitrifying groove 10 ammonia in the mud is converted to and is returned to dissolved oxygen after nitrous acid or the nitric acid and reduces groove 16.In addition, the part of the mud in the settling bath 8 is supplied to nitrifying groove 10, to keep nitration treatment.
Other formation and treatment step are identical with embodiment 8, the Therefore, omited explanation.
Also have, can dissolve the HRT of groove 2, preferably, be set to and embodiment 5 identical 12～72 hours, more preferably, be set at 18～48 hours, most preferably, be set at 20～36 hours.
In addition, mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria as producing, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
And then, it is desirable for the temperature that can dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 10)
The treatment unit of the organic waste water of present embodiment as shown in figure 11, is equipped with anaerobism groove 4, anaerobic groove 6, aerator tank 13, settling bath 8 and can dissolves groove 2.
In the present embodiment, former water carries out the anaerobism processing and with after the discharging of the phosphorus composition in the mud, is fed into anaerobic groove 6 and carries out denitrogenation processing in anaerobic groove 6 in anaerobism groove 4.Then, carry out the treatment solution that denitrogenation processing crosses and be fed into aerator tank 13 in anaerobic groove 6, the ammonia that is contained in aerator tank 13 in the mud is converted to nitrous acid or nitric acid.That is, in aerator tank 13, carry out nitration treatment.
Secondly, the treatment solution of nitration treatment supplies to settling bath 8 in aerator tank 13.And in described settling bath 8, carry out solid-liquid body composition from and with the discharging of isolating liquid part, in addition, separate, the part of the mud of sedimentary solid-state part supplies to when can dissolve in the groove 2, and remainder is returned to anaerobism groove 4 as foldback mud.
The mud that carries out dissolving after the processing is returned to anaerobic groove 6, thereby carries out denitrogenation processing, the processing in the aerator tank 13, the solid-liquid separation in the settling bath 8, the dissolved processing in can dissolving groove 2 in the anaerobic groove 6 repeatedly.In addition, a part that is carried out the nitrification liquid of processing in aerator tank 13 is returned to anaerobic groove 6 or anaerobism groove 4, carries out denitrogenation processing in anaerobic groove 6.
Preferably, the HRT that setting can be dissolved groove 2 for embodiment 3 identical 12～72 hours, more preferably, be set at 24～72 hours, most preferably, be set at 36～48 hours.
Setting can be dissolved the HRT beyond the groove 2, preferably, it is to be to be to be 3～6 hours in 1～3 hour, aerobic slot 17 in 0.5～2 hour, anaerobic groove 6 in 0.15～0.3 hour, anaerobism groove 4 that dissolved oxygen reduces in the groove 16, more preferably, to reduce in the groove 16 be to be to be to be 3.5～5 hours in 1～2 hour, aerobic slot 17 in 1～1.5 hour, anaerobic groove 6 in 0.17～0.25 hour, anaerobism groove 4 to dissolved oxygen.
In addition, mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria as producing, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
And then, it is desirable for the temperature that can dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 11)
In the present embodiment, as shown in figure 12, can dissolve can dissolve in the groove 2 mud of handling be returned on this point of anaerobism groove 4 be returned to anaerobic groove 6 in the occasion of embodiment 10 different.
Carry out in anaerobism groove 4 that anaerobism is handled, carry out carrying out nitration treatment in denitrogenation processing, the aerator tank 13 in the anaerobic groove 6, in settling bath 8 solid-liquid body composition from, in can dissolving groove 2, carry out dissolving on the operation of processing identical with embodiment 10, its explanation of Therefore, omited.In the present embodiment, also be returned in the anaerobic groove 6 part of nitrification liquid or anaerobism groove 4.
Preferably, the HRT that setting can be dissolved groove 2 for embodiment 3 identical 12～72 hours, more preferably, be set at 24～72 hours, most preferably, be set at 36～48 hours.
In addition, mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria as producing, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
In addition, it is desirable for the temperature that to dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 1 2)
In the present embodiment, as shown in figure 13, the step that can dissolve groove 2 back is provided with nitrifying groove 10.In the present embodiment, the mud that will handle in can dissolving groove 2 supplies to nitrifying groove 10, and is returned to anaerobic groove 6 after the ammonia in the mud being converted into nitrous acid or nitric acid in nitrifying groove 10.In addition, supply with mud from settling bath 8 to nitrifying groove 10.
Carry out in anaerobism groove 4 that anaerobism is handled, carry out carrying out nitration treatment in denitrogenation processing, the aerator tank 13 in the anaerobic groove 6, in settling bath 8 solid-liquid body composition from, in can dissolving groove 2, carry out dissolving on the operation of processing identical with embodiment 11, its explanation of Therefore, omited.
Also have, can dissolve the HRT of groove 2, preferably, be set to and embodiment 5 identical 12～72 hours, more preferably, be set at 18～48 hours, most preferably, be set at 20～36 hours.
In addition, mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria as producing, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
In addition, it is desirable for the temperature that to dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 13)
In the present embodiment, also be uniformly set nitrifying groove 10 in the later step that can dissolve groove 2, and in its nitrifying groove 10, handled ground mud and be returned on this point of anaerobism groove 4 inequality as illustrated in fig. 14 with the embodiment 12 that is returned to anaerobic groove 6 with embodiment 12.
Carry out in anaerobism groove 2 that anaerobism is handled, carry out carrying out nitration treatment in denitrogenation processing, the aerator tank 13 in the anaerobic groove 6, in settling bath 8 solid-liquid body composition from, in can dissolving groove 2, carry out dissolving on the operation of processing identical with embodiment 10, its explanation of Therefore, omited.
Also have, can dissolve the HRT of groove 2, preferably, be set to and embodiment 5 identical 12～72 hours, more preferably, be set at 18～48 hours, most preferably, be set at 20～36 hours.
Present embodiment is also identical with embodiment 12, mud need be supplied to nitrifying groove 10 from settling bath 8.
In addition, mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria as producing, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
In addition, it is desirable for the temperature that to dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 14)
The treatment unit of the organic waste water in the present embodiment, as shown in figure 15, by reactive tank 1, can dissolve groove 2, storagetank 3 constitutes.In reactive tank 1, carry out the processing of the organic waste water identical with embodiment 1.
In the present embodiment, as shown in figure 16, the operation that repeats respectively that the anaerobism of being undertaken by stirring is handled and handle by the aerobic that aeration carries out each 3 times, thereafter, circulation carry out by stop precipitation that aeration carrying out, solid-liquid body composition from, can dissolve the operation of processing.In reactive tank 1, carry out the processing of repetition anaerobism and become isolating operation, and in can dissolving groove 2, carry out to dissolve processing with operation, precipitation, the solid-liquid body that aerobic is handled.
The time that can adjust each operation carried out for several times (for example handling from the intermittent type of a series of wastewater treatment of the discharge that flow into treating water that receives former water in 1 day, 2～4 times), but, treatment time according to each operations of adjustment such as the proterties of waste water or amounts carried out about 1 time at one day, or 3 days 2 times intermittent type is handled.
The time of the operation of wastewater treatment is, for example, flow into 60 minutes, anaerobism handles 60 minutes, aerobic and handles 70 minutes, anaerobism and handle 30 minutes, aerobic and handle 80 minutes, anaerobism and handle 20 minutes, aerobic and handle 10 minutes, precipitation 40 minutes, discharged 40 minutes.
In the present embodiment, in the aerobic treatment process, carry out nitratedly, and in the anaerobism treatment process, carry out denitrogenation processing.
But can dissolve the dissolving liquid of handling and in first (at first) aerobic treatment process, be returned to reactive tank 2.Depend on the treatment time of first aerobic treatment process the opportunity of its foldback, still, be set at and stopped aeration preceding 30 minutes to 3 hours, preferably, before 30 minutes to 1 hour.
In the present embodiment, be provided with storagetank 3 in the step that can dissolve groove 2 back, but so the dissolving liquid of can enough storagetank 3 interim storages in can dissolving groove 2, handling, thereby, but in first aerobic treatment process, be easy to adjust dissolving liquid is returned to opportunity of reactive tank 2 and amount etc.
Can dissolve the HRT of groove 2, preferably, be set to and embodiment 1 identical 12～72 hours, more preferably, be set at 18～48 hours, most preferably, be set at 20～36 hours.
As producing mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
In addition, it is desirable for the temperature that to dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 15)
The treatment unit of the organic waste water in the present embodiment, as shown in figure 17, the step in reactive tank 1 back is provided with storagetank 3, and then the step in its back is provided with and can dissolves groove 2.In the present embodiment, the mud nitrated, that denitrogenation processing is crossed is stored in storagetank 3, and the amount that can dissolve processing is as required supplied with mud to dissolving groove 2.
Only supply with the amount of the mud that need be able to dissolve processing in this wise, but can adjust amount thus in advance to the dissolving liquid of aerobic treatment process foldback to dissolving groove 2.
Repeat that anaerobism is handled and the operation of aerobic processing, precipitate again thereafter, the solid-liquid body becomes identical with embodiment 14 on the isolating this point.
Can dissolve the HRT of groove 2, preferably, be set to and embodiment 5 identical 12～72 hours, more preferably, be set at 18～48 hours, most preferably, be set at 20～36 hours.
In addition, mud carried out liquefiable microorganism of dissolving enzyme, to use thermophile bacteria as producing, preferably, use especially disclosed various bacillus in embodiment 1 (
Bacillus) genus bacterium or Geobacillus genus bacterium.
In addition, it is desirable for the temperature that to dissolve when handling and be set to identical with embodiment 1 50～90 ℃, under the situation of using the such aerobic thermophile bacteria of bacillus, preferably, the design temperature scope is 55～70 ℃, more preferably, especially 60～65 ℃.In addition, the pH when setting can be dissolved and be handled preferably, is set at 7～8 scope for the scope of pH6～9 identical with embodiment 1.
(embodiment 16)
Present embodiment is to contain under the situation of phosphorus in the mud that is produced by biological treatments such as above-mentioned nitrated, denitrogenations, is equipped with the embodiment of the device of removing phosphorus wherein.
In the present embodiment, at such settling bath 8 rear section sides of the respective embodiments described above, flocculation agents such as interpolation poly aluminium chloride come dephosphorization, or filter material is set, and come dephosphorization through flocculation filtration.
In the respective embodiments described above, have in the embodiment of anaerobism processing and aerobic treatment process (aeration treatment process), when treating water or mud contain phosphorus, the microorganism from the mud discharging in the anaerobism treatment process of described phosphorus, in the aerobic treatment process by the microorganism combination.Yet, even like this discharging or in conjunction with phosphorus, when adopting dissolved processings of mud, also exist the treatment solution that contains phosphorus to be discharged into misgivings system outside, and can not reach by anaerobism processing and aerobic both processing and discharge phosphorus or in conjunction with the purpose of the function of phosphorus.
Therefore, by above-mentioned such dephosphorization apparatus is set, can remove the phosphorus that is contained in treating water or the mud energetically.This handle applicable to continous way and intermittent type is handled both.
(embodiment 17)
In the present embodiment, as dephosphorization apparatus, change over the device that uses above-mentioned flocculation agent etc., it is constructed as follows, and is provided with the phosphorus release groove that possesses the phosphorus tripping device at settling bath 8 rear section sides, isolated mud from settling bath 8, with in described phosphorus release groove through for example mud state of anaerobism state, heated condition etc., discharge phosphorus further, the phosphorus after discharging is separated into the dissolution fluid that discharges phosphorus sludge and phosphorus, and add flocculation agent etc. in the phosphorus release liquid, come dephosphorization thus.Then, phosphorus being discharged mud carries out dissolving processing.
Thereby, in the present embodiment, also can be equipped with the such various grooves of the respective embodiments described above in settling bath 8 leading portion sides.These handle applicable to continous way and intermittent type is handled both.
(embodiment 18)
Present embodiment, be with iron plate, iron particle, steel wool etc. put into the respective embodiments described above reactive tank 1, aerator tank 13, nitrifying groove 10, can dissolve groove 2, anaerobic groove 6 etc., phosphorus composition be attached on the iron and reach the embodiment of dephosphorization.
In the present embodiment, need not the flocculation agent that uses above-mentioned embodiment such, also need not as above-mentioned embodiment 17, the phosphorus letdown tank to be set in addition for discharging phosphorus, only to being arranged on reactive tank 1, aerator tank 13 in the treatment unit, can dissolving groove 2, anaerobic groove 6 etc. and drop into the iron starting material, make phosphorus be attached on the described iron starting material just dephosphorization easily.
(other embodiments)
Also have, in above-mentioned embodiment 3,4,5 etc., as pending liquid, leftovers decomposing gas that use will be discharged from food factories and the acid-fermentation liquid that ferments, still, the kind of pending liquid is not limited only to this, and other kinds are also harmless.
In addition, embodiment 3,4,5 as described, it is not essential condition of the present invention that fermented liquid storagetank 3 is set, and it is for example shown in Figure 180, can use does not have fermented liquid storagetank 3 yet, and the treatment unit that is equipped with anaerobism groove 4, aerator tank 5, anaerobic groove 6, secondary aerator tank 7, a settling bath 8 and can dissolves groove 2.For example under the situation of processing, can use treatment unit as shown in figure 18 aptly from the sewage of sewage work.
And, from dissolving groove 2 discharging exhausts, but, when can remove the deflated stink, high-temperature exhaust air can be imported nitrifying groove or aerator tank by such emission gases being imported in the nitrifying groove or aerator tank in the above-mentioned embodiment, the temperature that improves each groove is higher than temperature when carrying out aeration based at ordinary times air, can improve microbic activity thus, thereby, processing efficiency improved, therefore, preferred above scheme.
And, no matter the kind of the organic waste water that desire is handled how, can adopt.
Claims (19)
1. the treatment process of an organic waste water is the method that organic waste water is handled with biological method, it is characterized in that having:
Utilize thermophile bacteria under 50～90 ℃ temperature, to carry out to dissolve processing for organic waste water being carried out after nitrated and the denitrogenation processing by mud nitrated and that denitrogenation processing produces.
2. the treatment process of organic waste water according to claim 1 is characterized in that,
Nitrated and the denitrogenation processing of organic waste water intermittent type in reactive tank (1) carries out, carry out described nitration treatment by aeration, carry out denitrogenation processing by stopping aeration, and be returned to reactive tank (1) stopping to dissolve treatment solution before aeration is handled 30 minutes～3 hours.
3. the treatment process of organic waste water according to claim 2 is characterized in that,
Stopping the aeration processing before 30 minutes～1 hour, can dissolve treatment solution and be returned to reactive tank (1).
4. the treatment process of organic waste water according to claim 1 is characterized in that,
Nitrated and the denitrogenation processing of organic waste water is to be undertaken by anaerobism treatment process, aeration operation, the denitrogenation operation of carrying out in the anaerobic groove, a secondary aeration operation.
5. the treatment process of organic waste water according to claim 1 is characterized in that,
It is to be undertaken by the denitrogenation operation in the anaerobic groove, anaerobism treatment process, treatment process, the denitrogenation operation in the anaerobic groove, aeration operation in the exchange groove that organic waste water carries out nitrated and denitrogenation processing.
6. according to the treatment process of claim 4 or 5 described organic waste waters, it is characterized in that, can dissolve carry out after the processing nitrated.
7. the treatment process of organic waste water according to claim 1 is characterized in that,
Organic waste water carry out nitrated and denitrogenation processing be undertaken by anaerobism treatment process, the denitrogenation operation in the anaerobic groove, aeration operation in, reduction can be dissolved the dissolved oxygen of the treatment solution after the processing.
8. the treatment process of organic waste water according to claim 1 is characterized in that,
Organic waste water carries out nitrated and denitrogenation processing is to be undertaken by anaerobism treatment process, the denitrogenation operation in the anaerobic groove, aeration operation.
9. the treatment process of organic waste water according to claim 1 is characterized in that, thickened sludge before can dissolving processing.
10. the treatment process of organic waste water according to claim 1 is characterized in that, making the liquefiable thermophile bacteria of mud is the aerobic thermophile bacteria.
11. the treatment process of organic waste water according to claim 10 is characterized in that, the aerobic thermophile bacteria is that bacillus spp. microorganism is the Bacillus microorganism belonging to genus.
12. the treatment process of organic waste water according to claim 1 is characterized in that, has removal by nitrated and denitrogenation processing and the operation of the phosphorus in the mud that produces.
13. an organic waste-water treating apparatus is the device that organic waste water is carried out biological processes, it is characterized in that,
Have: the device that organic waste water is carried out nitrated and denitrogenation; And, to utilizing thermophile bacteria under 50～90 ℃ temperature, to carry out the liquefiable groove that dissolves by mud nitrated, that denitrogenation produces.
14. the treatment unit of organic waste water according to claim 13 is characterized in that,
The device that organic waste water is carried out nitrated and denitrogenation is to carry out device nitrated, denitrogenation in intermittent reaction groove (1), carry out described nitration treatment by aeration, carry out denitrogenation processing by stopping aeration, and be returned to reactive tank (1) stopping to dissolve treatment solution before aeration is handled 30 minutes～3 hours.
15. the treatment unit of organic waste water according to claim 13 is characterized in that,
The device that organic waste water is carried out nitrated and denitrogenation is to carry out device nitrated, denitrogenation by anaerobism groove (4), an aerator tank (5), anaerobic groove (6), secondary aerator tank (7).
16. the treatment unit of organic waste water according to claim 13 is characterized in that,
The device that organic waste water is carried out nitrated and denitrogenation is by formerly anaerobic groove (11), anaerobism groove (4), exchange groove (12), anaerobic groove (6), aerator tank (13) carry out device nitrated, denitrogenation.
17. the treatment unit of organic waste water according to claim 13 is characterized in that,
The device that organic waste water is carried out nitrated and denitrogenation is to carry out device nitrated, denitrogenation by anaerobism groove (4), anaerobic groove (6), aerator tank (13), and is provided with the dissolved oxygen reduction groove (16) that reduces the dissolved oxygen after can dissolving processing.
18. the treatment unit of organic waste water according to claim 13 is characterized in that,
The device that organic waste water is carried out nitrated and denitrogenation is to carry out device nitrated, denitrogenation by anaerobism groove (4), anaerobic groove (6), aerator tank (13).
19. the treatment unit according to the described organic waste water of claim 13 to 18 is characterized in that,
Have and remove the device that is contained in by the phosphorus in the mud of nitrated and denitrogenation processing generation.
Applications Claiming Priority (2)
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| JP208429/2003 | 2003-08-22 | ||
| JP2003208429A JP2005066381A (en) | 2003-08-22 | 2003-08-22 | Method and apparatus for treating organic waste water |
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| CN1688513A CN1688513A (en) | 2005-10-26 |
| CN1326786C true CN1326786C (en) | 2007-07-18 |
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| JP (1) | JP2005066381A (en) |
| KR (1) | KR100546991B1 (en) |
| CN (1) | CN1326786C (en) |
| AU (1) | AU2003261784A1 (en) |
| TW (1) | TW200516056A (en) |
| WO (1) | WO2005019121A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI555708B (en) * | 2011-01-17 | 2016-11-01 | 財團法人工業技術研究院 | System and method for treating simultaneously wastewater containing organic and inorganic pollutants |
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| JP5315587B2 (en) * | 2005-12-27 | 2013-10-16 | 栗田工業株式会社 | Apparatus and method for treating wastewater containing organic matter |
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| MY168200A (en) | 2009-12-01 | 2018-10-15 | Jinmin Li | Method and apparatus for sluge treatment and use thereof in sewage biotreatment |
| KR101126871B1 (en) | 2010-02-05 | 2012-03-23 | 금강엔지니어링 주식회사 | Advanced treatment system of wastewater having a plasma discharging tank |
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| CN106916756B (en) * | 2017-04-10 | 2020-05-19 | 北京绿安创华环保科技有限公司 | Fungus strain, microbial agent, straw soil remediation agent and application thereof |
| CN114787104B (en) | 2019-12-16 | 2023-06-09 | 住友电气工业株式会社 | Cubic boron nitride sintered body |
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| US11434550B2 (en) | 2019-12-27 | 2022-09-06 | Sumitomo Electric Hardmetal Corp. | Cubic boron nitride sintered material and method for manufacturing the same |
| US20230227949A1 (en) | 2020-07-31 | 2023-07-20 | Sumitomo Electric Industries, Ltd. | Cubic boron nitride sintered material and cutting tool including same |
| CN116056822A (en) | 2020-07-31 | 2023-05-02 | 住友电气工业株式会社 | Cubic boron nitride sintered body and cutting tool comprising same |
| EP4190469A4 (en) | 2020-07-31 | 2023-12-27 | Sumitomo Electric Industries, Ltd. | Cubic boron nitride sintered compact, and cutting tool containing same |
| EP4242334A4 (en) | 2020-11-04 | 2024-01-03 | Sumitomo Electric Industries | Cubic boron nitride sintered body |
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- 2003-08-28 AU AU2003261784A patent/AU2003261784A1/en not_active Abandoned
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| Publication number | Publication date |
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| JP2005066381A (en) | 2005-03-17 |
| KR20050088258A (en) | 2005-09-05 |
| CN1688513A (en) | 2005-10-26 |
| KR100546991B1 (en) | 2006-01-26 |
| AU2003261784A1 (en) | 2005-03-10 |
| TW200516056A (en) | 2005-05-16 |
| WO2005019121A1 (en) | 2005-03-03 |
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