CN1035276A - Effluent purification method - Google Patents
Effluent purification method Download PDFInfo
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- CN1035276A CN1035276A CN88106593A CN88106593A CN1035276A CN 1035276 A CN1035276 A CN 1035276A CN 88106593 A CN88106593 A CN 88106593A CN 88106593 A CN88106593 A CN 88106593A CN 1035276 A CN1035276 A CN 1035276A
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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
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Abstract
The purpose of the method for purifying waste water in the industrial sewage purification device is by improving the efficient of each step of processing, when energy balance and required equipment structural volume reach top condition, improve decomposition efficiency, and by biological method dephosphorylate salt, and improve and denitrogenate efficient.Before sewage enters, the aerobic zone of flowing through at least and a nitration treatment district.Have a pre-treatment inhalant region or equilibrium area at least, perhaps a no or buffer zone freely obtains activation by biological method.This treatment process is with sewage that contains nitrifier and oxygen through carrying out a biological disposal upon and sedimentary mixture, preferably introduces intake zone by settling section again, or rather, and at least should be before predefecation, or should be before activation when not having the predefecation device.
Description
The present invention relates in the industrial sewage purification device, carry out the method for sewage purification, in this device by biological nitration and denitrification with nitrogen transformation with separate out, will flow through at least aerobiont part and have at least a part will carry out nitration treatment of sewage.
Family and industrial sewage contain organic and inorganic nitride.In domestic sewage, organic nitrogen compound exists with the form of protein, peptide, amino and urea, and the inorganic nitride major part is to be that form with ammonia exists with the ammonium ion small portion.In water channel, begin to transform to ammonium.Contained nitrogen oxide is to exist with the nitrate form in the sewage, derives from industry, starting material processing industry or agricultural.Institute's nitrogenate influences the waters in all its bearings in the sewage.
The nitrogen that exists with organic nitrogen compound or ammonium form is a kind of aerobic substance in water, because because the mechanism of microorganism in water is oxidized to nitrite or nitrate with it.When very poor or water oxygen level is very low in draining, because this mechanism, may surpass the threshold concentration of dissolved oxygen.Nitrite or ammonia all are deleterious to fish, and the toxic degree of ammonia is relevant with its pH value, and increase and increase with the pH value.In addition, nitrogen and phosphorus all are nutritiousization materials.
Therefore, the sewage that contains high nitrogen amount must transform with denitrification and handle.During biological nitrogen removal, the nitrogen in the ammonium is handled in two steps, promptly initial oxidation is nitrate (nitrification), after restore and be that elemental gas nitrogen (denitrification) overflows.
Because the condition of each enterprise is different, at first to determine to produce the kind and the quantity of sewage, also to use existing equipment in case of necessity, so sewage purification is a very complicated problems.The every of effluent purification method once improves, and all must consider the parameter of the whole bag of tricks, so that enterprise obtains whole best effect.
Therefore, task of the present invention will provide a kind of method exactly, make the decomposition course in the industrial sewage purification system obtain optimum level, its method is by improve decomposing the material that is difficult to decompose with remarkable minimizing oxygen-consumption (BSB 5 and CSB),, hydrolysis nitrated by improving and phosphatic absorption and removal and denitrification fully purify sewage under the condition of improving energy balance.
Task of the present invention can achieve a solution by the characteristic and the dependent claims of claim 1.
The method according to this invention is by the reaction compartment that enlarges biological action, the breeding that enlarges nitrifier and the certain distribution and the control of biomass, to improve the biological action time of a plurality of active bio bacterium colonies.
According to the inventive method, adopt a following measure at least:
A. by adding sewage that is rich in nitrifier and oxygen and sedimentary mixture through carrying out a biological disposal upon, preferably the mixture of the precipitation of settling section or its discharging part or discharge unit again activates at least one before without bioactivation or sharp exhausted pretreating zone.Reinforced preferably as far as possible before the intake zone of this device.
B. by the inventive method, activate at least one biologically active zone but be not to carry out nitrated district, its method is sewage that is rich in nitrifier and the sedimentary mixture that adds through carrying out a biological disposal upon, preferably residue throw out in the nitrification zone or backflow throw out, work must be carried out by following mode in the biotic district simultaneously.
If any the predefecation district, sewage this district that flows through earlier, in main flow or shunting, flow through then high charging stage or absorption phase (HBAC 1).
Then proceed to handle, promptly another part sewage of a part of sewage in the high loading area (HBAC 2) and low loading area (NBAN) is handled by the inventive method.And the processing of low loading area is to carry out under the condition of nitration treatment being suitable for carrying out.(HBAC 1) carries out pre-treatment if sewage is feeded the stage at height, and then correspondence need not be continued to handle but that part of also normal flow of handling is crossed by the higher charging stage (HBAC 2) in the main stage.But by the inventive method is condition, proceeds together to handle after joining region (NABN+C) compiles at sewage higher and low loading area.Yet sewage continues to be treated to good at higher loading area (HBAC 2).The breeding of chemoorganotrophs provides favourable condition to higher loading area for growing rapidly.Higher loading area is feeded the stage (HBAC 1) as height, and respectively by desired purpose, throw out that can high yield is obtained the energy of high yield, also can corresponding prolongation aeration time and use the throw out of high timeliness improve phosphatic absorption.
The charging that NBAN and HBAC are 2 is poor, and minimum is 0, is 19.5kg BSB/kg TS to the maximum.Corresponding scaled value is applicable to the trickling filter of sewage disposal.
Preferentially the sewage in the higher and low loading area is collected in isolating treatment zone again (NBAN+C).
Preferentially this district begin carry out denitrification and handle.
Preferentially carrying out denitrification in the termination in this district handles.
The resolution of higher loading area is adjusted according to the treatment zone again and the desired BSB consumption thereof that exist.
If there is not treatment zone again, then select resolution by correspondingly adjusting charging, make the desired quantity discharged of maintenance in the mobility scale of allowing.
Preferably throw out higher and low loading area is separated.Therefore, the settling region connects a higher charging.The throw out of high loading area and higher loading area separates control at low loading area.
According to definition, region of activation of the present invention is:
-inlet channel or inlet segment (n)
-band is concentrated the water transfer pump (ELPW) of well
-sand and fatty collector (SF)
-rainwater overflows groove (RUB)
-predefecation groove (VKB)
-all inlet channels, inlet segment and buffer zone, dashpot is to biological treatment stage.
According to definition, sewage and sedimentary mixture are made up of water that is rich in nitrifier and oxygen and throw out.
According to the method for A, its version as:
1. preferential in addition middle settling section or the scum silica frost (SS) that is rich in nitrifier again in the settling section are mixed.
2. residue throw out (USN) and the unprecipitated recirculated water that is rich in nitrifier that is rich in nitrifier can be mixed into the region of activation in addition.
3. preferentially before mixing with recirculation water or entering the region of activation, throw out is handled through suitable phosphoric acid salt phegma earlier.
4. according to A, preferentially direct introducing of recirculated water (RLW) is scheduled to carry out the region of activation of denitrification processing in addition and do not mix with RFW.
5. the material that preferentially will enter the region of activation carries out denitrification earlier before being added to biological main stage handles.
6. preferentially be rich in the sedimentary addition of nitrifier with the consumption restriction adding of nitrifier in the biological main stage.
7. the sedimentary addition that is rich in nitrifier that adds the region of activation during day rain is very high, makes because the oxygen that activation produces exhausts fully in the region of activation as far as possible.
8. primary water is not a fixed with the discharging that precipitates recirculation water (RFW) in two portions in the settling region, and the discharging of increase precipitation part can increase the precipitation capacity in the recirculation water.
9. replenish discharging and the adding of the recirculated water that is rich in nitrate (RLW) can only directly be added to the region of activation that is connected with the region of activation of nitration treatment that is hydrolyzed in.
10. the flowing water section of region of activation and recirculation water is ventilated separately by the c /v system.
11. the additional ventilation of recirculation water is preferentially carried out in settling section post precipitation again at sewage in final treatment zone or the discharge region.
12. a series of region of activation activates by recirculation water and the throw out and the recirculated water that are rich in nitrifier:
A) be rich under phosphoric acid salt, the poor as far as possible sedimentary condition that contains nitrate in adding, the region of activation is used for the phosphoric acid salt phegma, and definitely can not oxygenation.
B) then to other region of activations activate hydrolysis, nitrated, improve phosphatic absorption, add simultaneously and be rich in the excessive throw out of nitrifier.
C) by adding the recirculated water (RLW) that is rich in nitrate again, to the activation of region of activation, denitrification is handled improved after the increase nitration treatment, therefore preferential utilization is right after the zone (predefecation groove) before the biological know-how will distinguish.
Version according to present method of B is:
1. select each biological know-how will distinguish the optimum range of (HBAC 2 and NBAN) by technical regulation.In addition, other parallel zones depend on charging, and its system of selection is lower in total charge amount, and power consumption is also few, but can carry out nitrated or nitrification and denitrification processing at interval.
At this moment, keep the biological bacterium colony of nitration treatment to have the advantage.Reduce by charge amount, oxygen-adding amount is also lower thereupon, and its concentration preferably is reduced to＜2mg/l～0.5mg/l.Oxygen-supplying amount should quicken activation as far as possible.The connotation of quickening is that biological bacterium colony still remains in the charging scope of allowing under the condition that charge amount increases, and charge amount is when increasing, and the oxygen-adding amount that requires to replenish is not more than the continued running that this district carries out under the oxygen-supplying amount controlled condition.
According to the inventive method, quickening activation also can be by adding the biological bacterium colony from other resolvers.
Denitrification is handled can only be limited in to keep under the above-mentioned condition and is carried out.
When charge amount reduces, at first charging is concentrated on main district (HBAC 2 and NBAN).When charge amount was minimum, the spare area kept under these conditions.
When charge amount increased, these preparation grooves started successively, reach maximum load along the direction of high load operating mode (HBAC 2) more.When the higher main district of load reaches its upper load limit, just change this load range over to.
Having many districts at least is in down work of nitration condition (NBAN), causes by desired purpose to obtain nitrated fully or produce enough nitrifiers.
Control the load in these zones and realize, be i.e. feeding quantity, amount of dry matter and oxygen-supplying amount by changing following parameters.
Volume by feeding quantity and given groove obtains space load and throw out loading capacity, and duration of contact separately and sedimentary life-span, and these all can be adjusted on demand.
The amount of dry-matter is preferably made every effort to reach 3g/l or is 4-6g/l NBAN.The vertex that reaches meaningful value then is decided by sedimentary essential surge capability, and amount of dry matter improves surge capability than high energy.By the inventive method, select the amount of dry-matter very high, as long as according to the load variations scope that produces in this system, surpass the load value that NBAN and HBAC are allowed.
2. (HBAC 2, and NBAN) duty ratio between is at interval alternately for high charge chute district and low charge chute district.Its variation can be by the height adjustment of charge amount in the groove.Under circulation throw out separation condition, can change the sedimentary guiding that refluxes by the inventive method when needing.This change is preferably weekly.
3. the resolver can constitute the stepwise evaporator tank by suitable way.
4. a high loading area (HBAC 1) and preposition a connection of huge denitrification zone, (HBAC 2, and NBAN) preposition connection is connected with additional for denitrification and higher loading area and low loading area.The setting of denitrification zone is not a fixed, and promptly they only just carry out the denitrification processing when input nitrate, but can fully ventilate according to drive manner higher or low device.
5. high adding with higher loading area is connected a suitable settling region.Low loading area also can add and connect a settling region.
6. the some c /v machines of configuration in whole resolver can be regulated the ventilation of each district and stepwise evaporator tank respectively.The very high ventilation installation of the equal allocative efficiency in input position in each district.
7. the overall control of this device by micro processor controls, obtains best effect by suitable measurement controlling elements.
8. in order to finish the decomposition function that does not have the higher of denitrification function and low loading area, also can connect the system that has other suitable decomposers by the inventive method, these install if any water clock pond or immersed type water clock pond, or these two is used in combination.
Other versions by present method of A and B are:
1. the method that in the biological decomposition district circulation throw out is separated quite has superiority.The throw out that produces in the resolver is separated with sewage in the settling region by rights, simultaneously the non-excessive throw out that is rich in nitrifier that forms in high and the higher loading area is directly introduced fermentation.Connect under the situation of the phosphoric acid salt backflow lysing segment of pressing the inventive method in the centre in case of necessity, backflow throw out part is introduced these districts again.
The non-throw out that is rich in nitrifier that forms in low loading area is not directly introduced fermentation by the inventive method, but is remained in the system as far as possible.Connect under the situation of the phosphoric acid salt backflow lysing segment of pressing the inventive method in the centre in case of necessity, backflow throw out part is introduced in these districts again.Sedimentary remainder is not introduced into fermentation zone by the inventive method useful as catalysts throw out, but is introduced into the region of activation or without nitrated higher loading area with suitable way.Preferably these remaining throw out parts are not introduced denitrification zone, but introduce the oxygen supply district.
2. when nitrifier reaches maximum breeding potential, discharge excessive throw out from producing the nitrifier district the earliest, but make the nitrifier in the region of activation also have the lifetime that is enough to decompose at last.
Breeding potential is not changeless, and it is decided by the component of temperature, charging ratio and sewage.
3. by the inventive method, connect phosphoric acid salt backflow lysing segment, also can further improve efficient except that phosphoric acid salt by the centre.Preferably, separating under the circulation throw out condition, introducing the anaerobism backflow dissolve area that separates by the inventive method the poor backflow throw out that contains nitrate.The residence time of throw out in these districts is 15 minutes, is up to 15 hours.By the inventive method, backflow dissolved throw out is introduced biological decomposition district or region of activation then.In main flow or shunting, can control.The sewage of introducing is not supplied with the backflow dissolve area.
Preferably longshore current is to mixing in addition.
By the inventive method, the backflow dissolve area has:
A) backflow water channel, water reservoir, retaining well, water collecting sump, but can not select settling region in the biological decomposition district;
B) unemployed water channel or pipeline or flowing water district;
C) predefecation slot part or the activated bath part that separates by water inlet, the throw out that can supply with effluent stream and just form;
D) rainwater overflows the bottom of groove or predefecation groove or inlet channel;
E) unemployed thickener;
F) pre-concentration groove increases quantity discharged by discharge water;
G) newly-built catch basin, the throw out that all refluxes is all introduced by this buffer device, the throw out of not supplying with sewage or just forming, or do not mix with them.
Container preferably is made up of the mixture that forms in intake zone part and settling region and backflow dissolve area, the nitrate in the adding material may be disposed in this mixing portion.The structure of making the helical flow shape is rather favourable.
A part is rich in the sedimentary backflow dissolution time of nitrifier and limited by the nitrifier destructive.Whether the limit return flow dissolution time kills the mobile nitrifier on is decided.
4. in addition, fermentation part can connect the backflow dissolve area.
5. by the inventive method, substrate is added to the backflow dissolve area.This substrate can ferment water, discharge water, filtrate or centrifugate form be added to above-mentioned each the district.By the inventive method, preferably directly and after the settling region that the biological know-how will distinguish, but always after separating the residue throw out, backflow dissolved backflow throw out is added in the fermented liquid as being added to.
Description of drawings:
Fig. 1 represents the General Principle figure of A:
1.A=region of activation (predefecation groove) according to A
Biological decomposition district 2.B=(high charging or absorption phase)
Biological decomposition district 3.C=(biological action main phase)
Biological decomposition district 4.D=(intermediate treatment district, settling region)
Biological decomposition district 5.E=(residue catabolic phase)
6.F=settling section (clarifying tank again) again
7.ELPW=front pump
8.SF=sand and fatty collector
9.VK=predefecation groove
10.RUB=rainwater overflows groove
11.F=fermentation
12.RS=backflow throw out
13.US=residue throw out
14.PS=initial precipitation thing
15.SU=fermentation substrate (discharge water, filtered liquid, centrifugate etc.)
16.SS=scum silica frost
17. possible approach (the with dashed lines arrow is represented)
18.() may function (in square frame or dot)
19.X=the settling pit that sediment exclusion is used
20.P=phosphoric acid salt reflux solution
21.=buffer zone
22.RLW=be rich in not precipitation circulating sewage or the sewage of nitrifier
23.RFW=be rich in the precipitation sewage of nitrifier and oxygen
24.RFW
O=... by the settling region, top
25.RFW
SE=... by sedimentary settling region, top
26.RFW
ABL=... recirculation water by the drainageway discharge
27. sewage supply
28. sewage discharge
29. the flow direction of various materials (stroke arrow)
General utility functions figure when Fig. 2 represents by the biological action main phase work of B.
The approach that numerical value in the square frame and dotted arrow are represented 18.D
30. the shunting of HBAC is guided into the running of NBAN+C by 1 expression.
31. the best by 2 expressions connects.
32. sedimentary being distributed among this figure of nitrifier do not provide, and provides in Fig. 4.
33.HBAC=high charging resolver or adsorption zone
34.HBAC=higher charging resolver
35.NBAN=the low charging of nitrification resolver
36.(+N the nitrification of)=may carry out
37.(NBAN
B, HBAC
BThe preparation running of)=may carry out
38.NBAN+C=residue denitrification, the low treatment zone again of feeding that residue is nitrated and residue carbon decomposes
39.ABS=settling region
40.RS
C=high charging backflow throw out poorly contains nitrifier
41.RS
N=be rich in the backflow throw out of nitrifier
42.NKB=clarifying tank again
Fig. 3 provides detailed general utility functions figure by B.
Replicator no longer illustrates.Can consult the explanation of Fig. 1 and 2.
43.(DN)=as adding nitrate (NO
3) then might and can only carry out denitrification and handle.
44.ABS
B10The thick settling region that removes in the biotic district
45.S=sedimentary supply in second high charging treatment zone
46.ABW sewage
47.RSC
1-3The backflow throw out in 1 district or 2 districts or 3 districts, RSN 1-4 is also identical
48.ABS
ZKBThe settling region, middle clarifying tank
49. mixing zone (converging or separating of effluent stream)
50.DN=denitrification is handled
51.(NBAN, HBAC)=interim spareslots
Fig. 4 system is by an example of two step devices of the inventive method B connection, throw out circulation.(62, the second step of the first step activation water clock pond 63).
Each zone name among Fig. 4 and label such as Fig. 3.
Effluent stream merges in 65, enters conveyer line 66.
Settling section D(7-8 in the middle of sewage is flowed into by this place) 67.Carry out residue then in the additional water clock pond 63 that connects and decompose, sewage carries out sufficient nitration treatment in ingress 68.
By the inventive method, through the clarifying throw out (RSN that is rich in nitrifier again
4) 69 and recirculation water (RFW) 70 be added in each region of activation.
Dotted arrow expression approach and the reinforced mode of operation that is decided by groove.
71. sewage river
63.TK water clock pond
72.N nitration treatment
73.C carbon decomposes
74.US
NThe residue throw out is rich in nitrifier
75.US
CThe residue throw out poorly contains nitrifier, introduces fermentation.
The connection method of 3 embodiment of Fig. 5-7 expression.
Fig. 5 is the simplest type of attachment.
52. carry out nitration treatment in fixing low when filling with substance activation.By the inventive method, activate by (RFW).23
53. Fig. 6 represents function higher and low charging drive manner.B has backflow functionality, and A is the running ready state.
54. Fig. 7 represents to change embodiment of activatory by the inventive method.
55. the settlement of sewage in the higher loading area (HBAC) is at middle settling section (ABS).
56.(NBAN) in sewage.
57.(NBAN) in sewage mix with sedimentary sewage among (HBAC) 55.
58. above-mentioned mixing water is added to treatment zone again
59. carrying out denitrification by the inventive method handles.
60. pass through 3 settling sections (NKB1-3) again, extremely
61. exit 28.
Function and claim such as Fig. 5 b, but very fast at HBAC district 56 postprecipitations.
Fig. 8 represents to improve phosphoric acid salt phegma (PO by the inventive method
4) example.
The input field of diagram region of activation (A) 1 and biological decomposition district (B).
Circulation throw out (the RS of diagram through separating
N77, RS
C78).
The buffer zone (P) 76 that the backflow throw out is flowed through and separated in activated bath enters region of activation (US then
C, P-77; US
N, P-78, RS
C, P-79, RS
N, P-80).
At US
N, P-In 78 the example, mixing (RFW), under 23 the condition, reinforced by (RUB, 10ELPW, 7SF, 8).Provide the process of absorption, hydrolysis and the nitration treatment of phosphorus in the example.
In order to improve (US
C) 81 denitrification or sedimentary precipitation, can be with US
CThrow out is added in the predefecation groove 82.(PS P+) 83 discharges by the initial precipitation thing.
76.P-phosphoric acid salt phegma (poor phosphorous hydrochlorate)
84.P-phosphatic absorption (being rich in phosphoric acid salt)
85.BB activated bath
78.US
N, P-The residue throw out is rich in nitrifier, poor phosphorous hydrochlorate
Fig. 9 provides by pre-activated treatment zone 1 according to the inventive method summary and is showing decomposition and the conversion process accelerated.
86.NORG organonitrogen
87.NH
4Ammonium
88.NO
2Nitrite
89.NO
3Nitrate
90.PO
4Phosphoric acid salt
91.P-Arm it is poor phosphorous
92.O
2Oxygen
93.N
2Change airborne nitrogen over to
The various form of export of the sewage and the sedimentary mixture of nitrifier and oxygen are rich in Figure 10 explanation;
RFW
ABLDischarge in the exit after the precipitation process,
RFW
ODischarging 24 when discharge process finishes in settling bath,
RFW
SEIn the settling bath in settlement of sewage district, discharge,
RS
NBy 41 dischargings of backflow throw out pipeline,
SS discharges by scum silica frost 16,
The unprecipitated sewage of RLW is by region of activation 22 dischargings.
Claims (40)
1, the method for in the industrial sewage purification device, purifying waste water, in this device by biological nitration and denitrification with nitrogen transformation with separate out, will flow through at least aerobiont part and have at least a part will carry out nitration treatment of sewage, it is characterized in that being rich in nitrifier and rich oxygen containing water and sedimentary mixture is introduced at least without nitrification zone by nitrification zone, turn back to one of following each district of before having flow through by sewage at least by being rich in nitrifier and rich oxygen containing water and sedimentary mixture, to obtain biological activity:
-inlet channel or inlet segment (n)
-band is concentrated the water transfer pump (ELPW) of well
-sand and fatty collector (SF)
-rainwater overflows groove (RUB)
-predefecation groove (VKB)
-all inlet channels, inlet segment and buffer zone, dashpot is to biological treatment stage.
2,, it is characterized in that returning by settling region, top or discharge area according to the method for claim 1.
3, according to the effluent purification method of claim 1, it is characterized in that returning be the device inhalant region the front.
4, according to the method for claim 1, it is characterized in that a part of sewage in the high loading area (HBAC 2) handles with a part of sewage that is suitable in the nitrated low loading area (NBAN) that is connected in parallel, will be rich in nitrifier and rich oxygen containing water and sedimental mixture and introduce high loading area (HBAC 2) by this low loading area.
5, according to the method for claim 1, it is characterized in that a part of sewage in the high loading area (HBAC 2) is handled with a part of sewage in the low loading area (NBAN) that is connected in parallel, two portions sewage can gather together in succession.
6, according to the method for claim 1, it is characterized in that extracting residue throw out or backflow throw out out from nitrification zone, supply with without nitrification zone.
7, according to the method for claim 4 or 5, it is characterized in that the sewage of height charging stage (HBAC 1) is carried out pre-treatment earlier, part sewage need not be for further processing in main phase and can introduce normal continuous flow district, another part sewage in the low loading area (NBAN) is handled, the sewage of height loading area can be combined in the additional back, district (NABN+C) that links two portions sewage is merged processing.
8,, it is characterized in that the sewage in the high loading area (HBAC 2) is to handle under the vegetative condition of source of nutrition helping with mushroom chemoorganotrophy composition according to the method for claim 4 or 5.
9, according to the method for claim 4 or 5, it is characterized in that high loading area (HBAC 2) and high charging stage (HBAC 1) with high yield throw out raising energy generation, or improve phosphatic absorption with the throw out of corresponding prolongation aeration time and the high timeliness of use.
10,, carry out denitrification when it is characterized in that separately beginning of processing again or end and handle according to the method for claim 1.
11, according to the method for claim 4 or 5, it is characterized in that sediment separate out between the height loading area, feed height the stage (HBAC 1) in the additional settling region that connects on high loading area and the throw out of high loading area (HBAC 2) separates with low loading area (HBAN) HBAN+C.
12, according to the method for claim 1, it is characterized in that with middle settling section or again the scum silica frost that is rich in nitrifier of settling section mix.
13, according to the method for claim 1, it is characterized in that be rich in nitrifier the residue throw out and be rich in do not precipitate nitrifier the recirculated water remix to the region of activation.
14, according to the method for claim 1, it is characterized in that with return water mix or introduce the region of activation of phosphoric acid salt rework solution before sneak into throw out earlier.
15,, it is characterized in that recirculated water and return water and mix and promptly directly enter the predetermined region of activation of nitration treatment separately according to the method for claim 1.
16,, it is characterized in that the compound that enters the region of activation carried out the denitrification processing before entering the biological main stage processing according to the method for claim 1.
17, according to the method for claim 1, the sedimentary addition that is rich in nitrifier that it is characterized in that adding the region of activation is decided by the nitrifier consumption of biological main stage in handling.
18, according to the method for claim 1, the sedimentary addition that is rich in nitrifier that adds the region of activation when it is characterized in that the rainy day is higher than as far as possible because the consumption of oxygen in the region of activation that produces during activation.
19, according to the method for claim 1, it is characterized in that by the amount of returning water of discharging in the clear water zone of settling region and the throw out district be unfixed, the throw out amount of returning in the water is improved by the water displacement that improves the throw out district.
20, according to the method for claim 1, it is characterized in that in addition discharging and add be rich in nitrate recirculated water fully directly be hydrolyzed with region of activation that the region of activation of nitration treatment is connected in carry out.
21,, it is characterized in that the region of activation and return the water flow sections by the additional ventilation of adjustable blow and vent system according to the method for claim 1.
22,, it is characterized in that the additional ventilation of returning water in final treatment zone or the discharge region carrying out in the settling section again after the settlement of sewage process according to the method for claim 1.
23,, it is characterized in that a series of a plurality of region of activation all activates with the throw out and the recirculated water that are rich in nitrifier by returning water according to the method for claim 1:
A) be rich in phosphoric acid salt and under the poor sedimentary condition that contains nitrate, each region of activation all is used for the phosphoric acid salt phegma in adding, simultaneously oxygen anything but;
B) then with the activation of each region of activation, be hydrolyzed, nitrated and/or improve phosphatic absorption, add sewage and the sedimentary mixture that is rich in nitrifier and oxygen simultaneously, and/or replenish and add poor phosphorous hydrochlorate and be rich in the excessive throw out of nitrifier;
C) after the nitration treatment, add the recirculated water that is rich in nitrate, improve denitrification, to strengthen the activation region of activation by replenishing.
24, according to the method for claim 4 or 5, it is characterized in that high loading area (HBAC 2) and low loading area (NBAN) are by selected its optimum range of technical regulation, other parallel zones determine that the mode of charging is: under the condition of low charging, low power consuming is carried out nitrated or the interval nitrification and denitrification is handled.
25,, it is characterized in that according to the corresponding minimizing oxygen-adding amount of the minimizing of feeding quantity according to the method for claim 24.
26, according to the method for claim 24, it is characterized in that the oxygenation process is by activation is accelerated, biological bacterium colony remained in the scope of additional feeding quantity when feeding quantity increased, when feeding quantity increased, the amount of oxygen that requirement is added was not more than this district and continues to carry out required amount of oxygen under the invariable condition of oxygen-adding amount.
27,, it is characterized in that accelerating activation by adding from the outside biomass of other resolvers according to the method for claim 26.
28, according to the method for claim 24, when it is characterized in that charge amount reduces, charging at first concentrates on main district, and (HBAC 2, and NBAN), other parallel zones (spare area) then charge amount reduce, and charge amount then increases when increasing continuously.
29, according to the method for claim 4 or 5, the charging that it is characterized in that high loading area (HBAC 2) and low loading area (NBAN) is than replacing for the interval.
30,, it is characterized in that the resolver is made of the stepwise evaporator tank according to the method for claim 4 or 5.
31, according to the method for claim 4 or 5, it is characterized in that huge denitrification zone of the preposition connection of high loading area (HBAC 1), high loading area (HBAC 2) is connected a denitrification zone with preposition the connection with adding of low loading area (NBAN).
32, according to the method for claim 4 or 5, each additionally is connected a settling region to it is characterized in that high loading area (HBAC 1) and higher loading area (HBAC 2) and/or low loading area (NBAN).
33,, it is characterized in that the controlled or c /v machine ventilation of each district or each stepwise evaporator tank by one according to the method for claim 4 or 5.
34, according to the method for claim 4 or 5, it is characterized in that not having the high loading area of nitrification function and decomposition function employing activating apparatus or other decomposers of low loading area, implement as trickling filter or immersed type trickling filter, but both are used in combination in case of necessity.
35, according to the method for claim 4 or 5, the throw out that it is characterized in that circulating separates in the biological decomposition district, simultaneously the excessive throw out that produces in high and higher loading area directly enters fermentation, the throw out that produces in low loading area does not directly enter fermentation, but remains in the system as far as possible.
36,, it is characterized in that further removing phosphoric acid salt by connecting in the middle of the phosphoric acid salt reflux section according to the method for claim 1.
37, according to the method for claim 36, under the isolating condition of throw out that it is characterized in that circulating, the poor backflow throw out that contains nitrate enters isolating anaerobism recirculating zone.
38,, it is characterized in that being elected to be having for the recirculating zone according to the method for claim 36:
A) backflow water channel, water reservoir, retaining well, water collecting sump, but can not select settling region in the biological decomposition district;
B) unemployed water channel or pipeline or flowing water district;
C) predefecation slot part or the activated bath part that separates by water inlet, the throw out that can supply with effluent stream and just form;
D) rainwater overflows the bottom of groove or predefecation groove or inlet channel;
E) unemployed thickener;
F) pre-concentration groove increases quantity discharged by discharge water;
G) newly-built catch basin, the throw out that all refluxes is all introduced by this buffer device, the throw out of not supplying with sewage or just forming, or do not mix with them.
39, according to the method for claim 36, a precipitation of the additional connection of part part is characterized in that refluxing.
40, according to the method for claim 36, it is characterized in that excessive throw out separates after, the Substrate of fermentation water, discharge water, filtered liquid or this form of centrifugate is added to the recirculating zone in addition, enter fermentation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP1988/000141 WO1988006570A1 (en) | 1987-02-27 | 1988-02-26 | Biological dephosphatization and (de)nitrification |
| EPPCT/EP88/00141 | 1988-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1035276A true CN1035276A (en) | 1989-09-06 |
Family
ID=8165240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88106593A Pending CN1035276A (en) | 1988-02-26 | 1988-09-07 | Effluent purification method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1035276A (en) |
| DD (1) | DD282223A5 (en) |
| ES (1) | ES2008021A6 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4100685A1 (en) * | 1991-01-11 | 1992-07-16 | Sued Chemie Ag | METHOD FOR CLEANING WATER CONTAINING PHOSPHATES AND NITROGEN COMPOUNDS |
-
1988
- 1988-09-06 ES ES8802730A patent/ES2008021A6/en not_active Expired
- 1988-09-06 DD DD88319557A patent/DD282223A5/en unknown
- 1988-09-07 CN CN88106593A patent/CN1035276A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ES2008021A6 (en) | 1989-07-01 |
| DD282223A5 (en) | 1990-09-05 |
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