CN100457651C - High-efficient treatment method for waste water - Google Patents
High-efficient treatment method for waste water Download PDFInfo
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- CN100457651C CN100457651C CNB2004100841003A CN200410084100A CN100457651C CN 100457651 C CN100457651 C CN 100457651C CN B2004100841003 A CNB2004100841003 A CN B2004100841003A CN 200410084100 A CN200410084100 A CN 200410084100A CN 100457651 C CN100457651 C CN 100457651C
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
- H02G9/025—Coverings therefor, e.g. tile
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
- H02G3/0418—Covers or lids; Their fastenings
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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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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S174/00—Electricity: conductors and insulators
- Y10S174/08—Shrinkable tubes
Abstract
A unit system which is composed of reaction groove having intermittent aeration function and sedimentation tank having sludge transportation facilities. This unit system can repeat through the setting condition of aeration or non aeration stirring and the setting time difference. The intermittent aeration and flow route alteration method can be implemented through combining two or more unit systems, the active sludge precipitating on the sedimentation tank is transported to the groove of the same unit system, only the upper clear water pass through between the groove of different unit system, thus completing the separation of the solid and liquid. Even though the organic compounds is deficiency and the ratio of C/N is low, the nitrogen and phosphorus still can be remove stably and high efficiently.
Description
Technical field
The present invention relates to water drain water or wastewater treatment method, specifically, relate to the method that waste water is efficiently handled, utilization has the intermittently reactive tank and the settling tank that has mud conveying facility of inflation performance, component units system (unit system), make up plural described cellular system, between the reactive tank of forming the different units system, do not pass through active sludge, only pass through the supernatant water of solid-liquid separation in described settling tank, and implement intermittently inflation and stream alter operation, stablize and eliminate organism in the waste water and nitrogen, phosphorus expeditiously.
Background technology
Be used for the nitrogen of waste water processing station and the biology of phosphorus at present and remove technology through anaerobic (anoxic) reaction process, anaerobism (anaerobic) reaction process of not supplying with free oxygen and aerobism (aerobic) reaction process of supplying with oxygen.In the aerobism reaction process organonitrogen and ammonia-state nitrogen are oxidized to nitrate ammonia, and carry out in the anaerobic reaction process nitrate ammonia is reduced to the denitrification reaction of discharging into the atmosphere behind the nitrogen.Initiating activity mud discharges phosphorus in the anaerobism reaction process.The phosphorus of Shi Fanging is absorbed by the microorganism surplus in the aerobism reaction process once more like this, and the microorganism of superfluous picked-up phosphorus finally removes denitrification and phosphorus by removing residual active sludge.
The technology of removing of nitrogen in the past and phosphorus is with anaerobism groove, anaerobic groove and aerobism groove etc. separately, and has certain capacity, so can not tackle flexibly according to the variation that flows into the water quality and the inflow water yield.In addition, for the organism that will flow in the waste water is used in denitrification reaction, the outflow water of nitrification groove need be carried out internal recycling in the denitrifying tank of last stage.In order to utilize the organism in the waste water and to be denitrogenated efficient fully, need to handle about 2～3 times internal recycling flow of flow, so the problem that exists pump facility expense, expenditure on power and maintenance cost to increase significantly.
In order to address the above problem, intermittently inflation method and stream variation were once proposed, adopting intermittently the prior art of inflation method and stream variation can enumerate with PID (Phased IsolationDitch, isolating trenches stage by stage is to call " PID " in the following text) processing method is the example of representative.
(a)-(d) of Fig. 5 is relevant with PID, and the change of inflation or non-inflated state, inflow and outflow direction is a stream change state in expression treatment process and each stage.
At first, one-piece construction is to have pre-denitrifying tank 201a, select groove 201b, anaerobism groove 201c, have two groups of oxidation ditches 202,203 and a settling tank 204 of inflation and agitating function along the carrying out order that flows into water.In addition, also have mud transferpump 205 from settling tank to pre-denitrifying tank and the mud conveying pipe arrangement 208 of carrying mud from.
The function of described anaerobism groove is to discharge phosphorus from mud with former water with after carrying mud to mix under the anaerobism state.If exist as nitrate ammonia (NO
3) or nitrite nitrogen (NO
2) bonded oxygen in waiting, then phosphorus discharges difficulty, so at the pre-denitrifying tank of last stage of anaerobism groove with select to need in the groove to remove former water in advance or carry free oxygen or the nitrate ammonia that contains in the mud.In addition, in order to prevent short circuit, the anaerobism groove is that the group that will be divided into more than two groups constitutes, and whipping appts 301 is set in reactive tank separately.
As mentioned above, PID needs expenses such as a lot of setup fees, expenditure on power, maintenance cost owing to need to be provided with and to move pre-denitrifying tank, selection groove, anaerobism groove etc.
In addition, consider that from the side of processing efficiency the conversion in stage is not rapid and indeterminate, processing efficiency is poor.Discharge phosphorus under the anaerobism state, the active sludge that phosphorus content is low is converted to the aerobism state, and carries out microorganism when activation, excessively absorbs phosphorus once more.But, among the PID in the anaerobism groove through the mud of dephosphorizing process at (a) and (c) reactive tank of inflow anaerobic state rather than aerobism state in the stage, so microbic activityization is insufficient, the ingestion efficiency of phosphorus is poor.
In denitrification process, for nitrogen oxides reduction, supplying with body as electronics needs sufficient organism.But, in PID, be adsorbed with organic mud in a large number if continue outflow from the oxidation ditch that under anaerobic state, carries out denitrification reaction, thereby organic loading is increased, then in the disadvantageous oxidation ditch of nitric acid reaction, flow into, so nitric acid reaction is poor, and owing to organism deficiency in the oxidation ditch under the oxygen free condition, nitric efficiency is poor.
In stage, the mud with flow identical with flowing into flow continues to flow out and flows into from first oxidation ditch 202 that carries out denitrification reaction and will carry out second oxidation ditch 203 of nitric acid reaction at PID (a).Therefore, the organism that is adsorbed in the mud runs off in first oxidation ditch with mud, and is unfavorable to denitrification process, and the organism of loss will flow into second oxidation ditch that will carry out nitric acid reaction, so unfavorable to nitric acid reaction.These phenomenons appear at the change stream too and carry out in the denitrification process in (c) stage of denitrification reaction at second oxidation ditch.
For solving these problems of PID processing method,, the PhICD method of No. the 0225971st, Korean Patent that the applicant invents is arranged as improved method.The PhICD method is by making up plural settling tank internally-arranged type oxidation ditch, and move with stream change and inflation at intermittence mode, and will flow into organism by solid-liquid separation between technology and in denitrogenation and dephosphorisation reaction, be utilized, can be as the load of nitric acid reaction, obtain good nitrification efficient, so denitrogenation dephosphorization stabilised efficiency and good.In addition, different with PID, can save the pre-denitrifying tank that comprises the last stage, four reactive tanks selecting groove, two groups of anaerobism grooves, so saving facility takes and maintenance cost, and because settling tank is built-in, so take up an area of the availability height and save the mud conveying and the conveying facility, save facility and take and expenditure on power.
But the PhICD method has four such operation phase of PID, so some complexity of operational management, the reactive tank form is restricted to the oxidation ditch form of circulation waterway type.
In addition, in " utilizing the high-efficient treatment method and the device thereof of solid-liquid separation between technology, stream change and intermittently inflation " of No. the 0350893rd, the Korean Patent of the applicant invention, the reactive tank form is without limits in the oxidation ditch form as the circulation waterway type, and form and be widely used in general long-term gas filling technology or standard activity mud technology by the square or rectangular reactive tank, the four-stage of operation phase from previous methods shortens to two stages, so operational management is simple.
But, in the method, solid-liquid separation utilizes filter plants such as filter cloth to carry out between technology, so filter cloth is blocked by the high-concentration suspension solids in the reactive tank, or the bubble of aerobism reactive tank is by flowing into behind the filter plant in anaerobic or the anaerobism reactive tank, can not be separated smoothly, denitrogenation dephosphorization efficient is poor.
In addition, flow into organism deficiency and C/N in the sanitary wastewater, so the required insufficient situation of organism of denitrogenation and dephosphorisation reaction is a lot of than low.As mentioned above, flow in the time of to be hanged down by the dissolved organic matter concentration that microorganism utilizes in the waste water, nitric efficiency is low, in order to supply with body as the required electronics of denitrification reaction, in the anaerobic reactive tank, need to inject the easy organism that decompose such as methyl alcohol, so cost burden is heavy, wish to obtain to replace the organism of methyl alcohol etc.
Summary of the invention
Propose the present invention for addressing the above problem, its objective is the high-efficient treatment method that waste water is provided, can save facility expense and maintenance cost, and can effectively utilize inflation method and stream variation at intermittence as the method for effectively removing nitrogen and phosphorus in the waste water.
For achieving the above object, in the present invention, by having the intermittently reactive tank and the settling tank component units system that has mud conveying facility of aerification function, utilize imposing a condition of inflation and on-inflatable stirring, the setting-up time difference also can repeat, and make up plural described cellular system and implement intermittently inflation and stream variation, sedimentary active sludge in the described settling tank is transported to the reactive tank of forming same cellular system, between the reactive tank of forming the different units system, have only supernatant water to pass through and solids does not pass through, finish the solid-liquid separation between technology.
Like this, at the waste water disposal facility that is used for denitrogenation dephosphorization of the present invention, the mud of carrying from external settling tank only flow into and comprises reactive tank settling tank, that constitute the same train cellular system that can draw described conveying mud.Just, the mud of conveying does not flow in other serial reaction grooves of adjacency.Therefore, utilize the solid-liquid separation performance of described settling tank, in the reactive tank that needs oxygen free condition or anaerobism condition, can not flow into from carry out that organism decomposes and the reactive tank of the aerobism state of nitrification effusive free oxygen or oxynitride, the organism that also do not run off is so can improve nitric efficiency.In addition, carry out preventing in the reactive tank of aerobism condition of nitrification flowing into, and improve nitrification efficient, so denitrogenate efficient by improving nitrification and nitric efficiency, having improved from the organism of the reactive tank of anaerobic or anaerobism condition.
Just,, mud is not moved mutually between the different reactive tank of reactive species, improve the problem of PID processing method thus by reactive tank and settling tank combination process are formed with two technologies.
In addition, among the present invention, at reactive tank square or rectangular, that swim breeding or be filled with the circular or rectangular externally positioned type settling tank (external clarifier) of combination in the reactive tanks such as catalytic oxidation groove of biofilm carrier, by aforesaid combination technology, what overcome the PhICD processing method comes the shortcoming of limited reactions groove and settling tank form with circulation waterway type oxidation ditch or internally-arranged type settling tank.
By increasing subsequent treatment process and the stream change stage being reduced to two stages, further simplify PID, the PhICD operation method that constitutes by four-stage among the present invention.By injecting air and air agitation in the externally positioned type settling tank when zero load nothing is released state, the operation phase will shorten the residence time in the idle running stage, also shortens a circulation required time.
In addition, be the waste water handling problem of the Korea S that solves the low and denitrogenation dephosphorization limited efficiency of C/N ratio among the present invention, in operation under the anaerobism condition and carrying out in the reactive tank of denitrogenation and dephosphorisation reaction injecting external carbon source for denitrification reaction, the initial precipitation pond further is set, utilize the primary sludge fermented liquid that produces, and utilize organic waste or its fermented liquids such as former rubbish, and effectively improve denitrogenation dephosphorization efficient, obtain the processing composition of effective organic waste.
As mentioned above, utilize the high-efficient treatment method that is used for the denitrogenation dephosphorization of the present invention, can improve the efficient of removing of nitrogen and phosphorus, reduce the eutrophication phenomenon of rivers and creeks and lakes and marshes, can provide and have system following advantage, that remove denitrification and phosphorus, even flow into organism deficiency and the low wastewater treatment of C/N ratio, also can obtain good and stable nutrient salts and remove efficient.
The state that the release of nitrification and denitrogenation oxidizing reaction and phosphorus and superfluous picked-up are reacted required changes rapidly and the reaction times shortens.Because the composition of treatment process is simple,, has solved and rotted easily and produce malodorous, as processing to be brought the treatment and disposal of difficult organic waste problem so take up an area of the utilization ratio height and facility take and maintenance cost is low.
Description of drawings
Fig. 1 is the schema of first embodiment of high-efficient treatment method of the present invention;
Fig. 2 is the schema of second embodiment of high-efficient treatment method of the present invention;
Fig. 3 is the schema of the 3rd embodiment of high-efficient treatment method of the present invention;
Fig. 4 is the schema of the 4th embodiment of high-efficient treatment method of the present invention;
Fig. 5 (a)～(d) is the schema of the denitrogenation dephosphorizing method (PID) of prior art.
Embodiment
Further describe the present invention below in conjunction with accompanying drawing.
Fig. 1 is the schema that expression nutrient salts of the present invention are removed first embodiment of method.This treatment system combination first module system and second cellular system are moved with stream change and inflation at intermittence mode.Wherein said first module system comprises first reactive tank 11 with air charging apparatus and whipping device (not diagram) and first settling tank 14 as the externally positioned type settling tank with mud handling equipment; Second cellular system comprises second settling tank 24 of second reactive tank 21 and externally positioned type.
Just, because the reaction solution that moves between described first reactive tank 11 and second reactive tank 21 must pass through in described two settling tanks 14,24 any one, so utilize the solid-liquid separation performance of described settling tank, two reactive tanks only do not pass through solids each other by supernatant water, and utilize the combined method of stream change and intermittently inflation to carry out denitrification reaction.
The first wastewater treatment stage shown in Fig. 1 (A) is the operation stage that mixing such as denitrification reaction, dephosphorisation reaction, organism decomposition and nitric acid reaction are carried out.This stage is carried out denitrification reaction and dephosphorisation reaction in first reactive tank 11, carry out organic aerobism and decompose and nitric acid reaction in second reactive tank.Stream is constructed as follows, and inflow water is flowed in described first reactive tank 11, and the inflow water of first reactive tank 11 flows out through first settling tank 14, second reactive tank 21 and second settling tank, 24 backs once more.
At this moment, first reactive tank 11 interrupts the operation of inflation facility, and facility is stirred in operation, thereby moves under oxygen free condition and anaerobism condition.In first reactive tank 11, in the fixed time, utilize the organism that contains in the inflow water to carry out oxynitride is reduced to the denitrification reaction of nomadic nitrogen at initial operating stage, when reaching the fully dried-up complete anaerobism condition of oxynitride, will carry out discharging the dephosphorisation reaction of phosphorus from mud.
Therefore, first reactive tank 11 in the above-mentioned first wastewater treatment stage (A) will setting-up time at interval and carry out denitrification reaction and dephosphorisation reaction.Simultaneously, operation inflation facility is kept the aerobism state in second reactive tank 21, decomposes with organic aerobism and carries out nitric acid reaction.
Comprise alternative conventional art in the described first wastewater treatment stage (A) of the present invention--(a) stage of-PID and the technology of facilities such as pre-denitrifying tank, selection groove, anaerobism groove, is to utilize described first settling tank 14 to come the supernatant water of isolating active mud from first reactive tank to the effusive outflow water of second reactive tank, so do not contain the inflow water of active sludge from 21 inflows of first reactive tank, 11 to second reactive tanks.Therefore, among the present invention, do not flow out in first reactive tank 11 as described first wastewater treatment stage (A) of denitrogenation dephosphorization technology and be adsorbed with organic mud, so prevent to supply with the organic loss of body in first reactive tank 11 as electronics, improve nitric efficiency, flow into organic loading and reduce in second reactive tank 21, so improve nitrification efficient.
For effective dephosphorization in dephosphorisation reaction, need the also non-existent complete anaerobism state of bonded oxygen of oxide form such as azine oxide compound.Even the complete anaerobism condition that the azine oxide compound is also removed only by prolonging the residence time in described (A) stage, also can satisfy the condition of first reactive tank 11.
Just, the described first wastewater treatment stage (A) of the present invention is in the stage, reaction solution passes through first settling tank 14 as the externally positioned type settling tank between first reactive tank 11 and second reactive tank 21, mud is transported to the reactive tank of last stage separately respectively, can not mix by the reactive tank different with the reaction form.In more detail, first reactive tank 11 carries stream 15 to be connected with first settling tank 14 and first mud, make the mud of first settling tank 14 be transported to first reactive tank 11, and second reactive tank 21 carries stream 25 to be connected with second settling tank 24 and second mud, makes the mud of second settling tank 24 be transported to second reactive tank 21.
Therefore, the PID that constitutes with settling tank with plural oxidation ditch and a series is different, solids can not move to second reactive tank 21 from first reactive tank 11, circulation is detained and will be carried out at first reactive tank 11 and first settling tank, 21 inside, and the mud that contains free oxygen and oxynitride can not flow into first reactive tank 11 from second reactive tank 21 of aerobism state.
In addition, different with PID, go into not need on the route to be provided with pre-denitrifying tank in sludge stream, select facilities such as groove and anaerobism groove, in the first wastewater treatment stage (A) shown in (A) of Fig. 1 the inside of first reactive tank 11 is become complete anaerobism condition.This be because, first reactive tank 11 is transported to mud in first settling tank 21, so contain first reactive tank 11 conveying mud, the described first wastewater treatment stage (A) of free oxygen or bonded oxygen not flowing into from second reactive tank 21 of aerobism condition or second settling tank 24, the organism that utilization contains with non-inflated state in flowing into former water, even the azine oxide compound all can be exhausted fully.
In first reactive tank 11 in the first wastewater treatment stage (A), in the gap of carrying out denitrification reaction and dephosphorisation reaction, first reactive tank 21 is also proceeded organism and is decomposed and nitric acid reaction under the aerobism condition.
In the second wastewater treatment stage (B) shown in (B) of Fig. 1, outside the effect of first and second reactive tanks 11,21 and stream changed mutually, the reaction content was identical with the described first wastewater treatment stage (A).
As shown in Figure 1, in the first wastewater treatment stage (A), flow into former water, treating water is discharged through first reactive tank 11, first settling tank 14, second reactive tank 21 and second settling tank 24.But the stream in the first wastewater treatment stage (A) of change flows into former water through second reactive tank 21, second settling tank 24, first reactive tank 11 and first settling tank 14 in the second wastewater treatment stage (B), and treating water is flowed out.And, the first wastewater treatment stage (A) of following, change stream in the second wastewater treatment stage (B), under the aerobism state, move, and former water flow in described second reactive tank 21 that stockpiles oxynitride, and the inflation mechanism of second reactive tank 21 stopped running, and operation and carry out denitrification reaction under oxygen free condition.Meanwhile, first reactive tank, 11 operation inflation mechanisms are converted to the aerobism condition, carry out organism and decompose and nitric acid reaction.
Just, denitrification reaction that carries out in first reactive tank 11 in the first wastewater treatment stage (A) and dephosphorisation reaction are to carry out at second reactive tank 21 in the second wastewater treatment stage (B), and the nitric acid reaction that carries out in second reactive tank 21 in the described first wastewater treatment stage (A) is to carry out at first reactive tank 11 in the second wastewater treatment stage (B), just hockets.The reaction content in the second wastewater treatment stage (B) is to intersect consistent mirror mutually with the reaction content in the first wastewater treatment stage (A).
As mentioned above, in the first embodiment of the present invention, even save setting necessary, that be used for removing pre-denitrifying tank, selection groove and the anaerobism groove etc. of oxynitride or dephosphorization in PID method in the past from conveying mud in the inflow part, reactive tank that also can be by will the carrying out denitrification reaction i.e. running status of first reactive tank 11 in the first wastewater treatment stage (A) and second reactive tank 21 in the second wastewater treatment stage (B) prolongs and finishes denitrification reaction, is carrying out dephosphorisation reaction effectively under the anaerobism condition fully.
Illustrate as the performance of the 3rd reactive tank 31 of subsequent treatment process and solid-liquid separating equipment 34 as follows here: change flows into stream, first settling tank 14 in (A) stage of under low anaerobic of activity or anaerobism condition, moving or (B) contain undecomposed organism in second settling tank 24 in stage so far, activity at anaerobic or anaerobism condition decline low activity mud, so the settleability of mud and compendency reduce, fine floss swims, therefore outwards flow out rapidly as final treating water, can produce the problem that reduces water quality treatment.
Therefore, need be by being used for moving and remove the 3rd reactive tank 31 of remaining organism and fine floss and the subsequent treatment process that the 3rd settling tank 34 is formed under the aerobism condition at ordinary times, to obtain good and stable treated water.Particularly, utilize (b) of the alternative Fig. 5 of described subsequent treatment process and (d) shown in the method for PID in the past in (b) stage and (d) stage, so method for running is simple and water quality treatment stable.
In nearly all wastewater treatment, the offered load that flows in the described subsequent treatment process is little.Therefore, described subsequent treatment process is provided with sand filter, the Microtraps net filter plants such as (micro strainer) that the solids that swims is filtered and removes.
In addition,, can save described the 3rd settling tank 34 if described the 3rd reactive tank 31 has microbe carrier or fills the biofilm filtration device of filtering material, thus reduce unit technology and aspect floor space and works building more economically.Here, described filter plant and biofilm filtration material can adopt technique known.
In above-mentioned first embodiment, for rapid settling tank 24 from the anaerobism condition along with the stage change, remaining organism and fine floss are removed in outside outflow and decomposition in 14, in subsequent treatment process, aerobism reactive tank and settling tank or biofilm filtration device are set.But, in a second embodiment,,, also can guarantee good water quality treatment even save the subsequent treatment process of first embodiment owing to aerobism reactive tank 12,22 further is set respectively in the back of first reactive tank 11 and second reactive tank 21.Irrelevant with the reaction form of described the first, the second reactive tank 11,21, by described first, second aerobism reactive tank 12,22 is kept aerobism always,, also can prevent the outflow of remaining organism and fine floss even change flows out stream.
Therefore, in the present embodiment,, also can guarantee good water quality treatment even save (b) stage and (d) stage in the method for PID in the past shown in (d) of the subsequent treatment process of first embodiment and Fig. 5 (b) and Fig. 5.
Waste water treatment process in the present embodiment is stream to be arranged to make flow into former water through first reactive tank 11, the first aerobism reactive tank 12, first settling tank 14, second reactive tank 21, the second aerobism reactive tank 22 and second settling tank 24.Described first reactive tank 11 is to move under the anaerobism condition, and described second reactive tank 21 is to have the three wastes water treatment stage of moving under the aerobism condition (Fig. 2 (A)), and stream is arranged to make the former water of inflow through second reactive tank 21, the second aerobism reactive tank 22, second settling tank 24, first reactive tank 11, the first aerobism reactive tank 12 and first settling tank 14.Described first reactive tank 11 is to move under the aerobism condition, and described second reactive tank 21 is to have the 4th wastewater treatment stage of moving under the anaerobism condition (Fig. 3 (B)).In the present embodiment, sedimentary active sludge also carries the stream 15 and second mud to carry stream 25 by first mud respectively in described first settling tank 14 and second settling tank 24, is transported to first reactive tank 11 and second reactive tank 21 respectively.
But, in the present embodiment,, contain free oxygen and oxynitride so carry in the mud owing in always for the reactive tank 12,22 of aerobism, utilize inflation to dissolve free oxygen and carry out nitric acid reaction.By such conveying mud, when free oxygen and oxynitride inflow reactive tank, second reactive tank 21 in first reactive tank 11 of the described three wastes water treatment stage of moving under anaerobic or anaerobism condition (A) and described the 4th wastewater treatment stage (B) is difficult to obtain competent complete anaerobism condition, so hinder dephosphorisation reaction.
Therefore, described first or second mud is carried in the stream 15,25 mud denitrifying tank 13,23 is set respectively, is used to remove free oxygen and oxynitride, increases denitrogenation dephosphorization efficient.Throw-in part divides inflow waste water in the described mud denitrifying tank 13,23, utilizes the organism in the waste water, can shorten the time of removing free oxygen and oxynitride form bonded oxygen.
In the present embodiment, the former water of inflow in three wastes water treatment stage (A) and the 4th wastewater treatment stage (B) can flow into the reactive tank 11 of anaerobic or anaerobism state at any time, in 21, prevent from the reactive tank 11 of anaerobic or anaerobism state, 21 flow out aerobism reactive tank 12,22 with solids.Therefore, save the initial precipitation pond, flow directly in the reactive tank 11,21 even will flow into former water, flowing into the organic solid thing that contains in the former water is that primary sludge also can be used in nitrification and denitrification reaction in reactive tank.
But, as the primary sludge that flows into the organic solid thing in the former water is owing to be made up of the mixture of macromolecular organic compounds such as Mierocrystalline cellulose, hemicellulose, starch, protein, fat, so, need resolve into the little organism of molecular weight in order to be used for the denitrogenation dephosphorisation reaction.When the fermentation raw sludge, generate acetate through perpropionic acid, butyric acid, ethanol etc., finally resolve into methane gas and carbonic acid gas.
The present invention is conceived to the composition and the anaerobic fermentation characteristic of these primary sludge, initial precipitation pond 41 and fermenter 42 further are set, with handle go up that flow into, that contain in the waste water, in first settling tank 14 precipitate and separate, the organic solid thing is that the primary sludge of main component is transported to fermenter 42, the acetate class organic acid that generates is supplied with the body utilization as the required electronics of denitrification reaction, be kept for the anaerobism condition of dephosphorization.
In addition, the disengaging filtered liquid that reclaims organic waste such as ight soil, animal waste, former rubbish, food-processing waste or organic waste can be put in described first or second reactive tank that moves under the on-inflatable whipped state, be used for the denitrogenation dephosphorisation reaction.When organic waste was directly dropped into reactive tank, the thick organic resolving time was longer, so water quality treatment is exerted an influence and needs the augmenting response tankage.
Therefore, put in the inflow water organic waste and mixing among the present invention, after in described initial precipitation pond, carrying out solid-liquid separation, the solvability low molecule organic matter that contains in the isolating supernatant water is flow into reactive tank by supernatant water, be used for the denitrogenation dephosphorisation reaction.
In addition, the thick organism of precipitate and separate is reclaimed with primary sludge, flow into described fermenter and ferment, to be decomposed into the fermented liquid of low molecule organic matter or remove not the fermentation filtered liquid of fermentation solid thing and put in described first reactive tank 11 or second reactive tank 21 of on-inflatable whipped state, be used for the denitrogenation dephosphorisation reaction, therefore the minimizing of organic waste quantity can be realized, and stable denitrogenation dephosphorization efficient can be guaranteed.Increase initial precipitation pond and fermenter and the embodiment that primary sludge, organic waste and fermented liquid thereof are used in the denitrogenation dephosphorisation reaction also is applicable to above-mentioned first embodiment.
Fig. 3 is the schema of the 3rd embodiment of expression denitrogenation dephosphorizing method of the present invention, has saved the subsequent treatment process among first embodiment.Different with PID, PhICD, do not resemble utilize PID or the PhICD intermediate stage of under zero load aerobism condition, moving ((A-1) stage of Fig. 3 and (B-1) stage) come between implementing process solid-liquid separation, use as the common square or rectangular reactive tank and the series connection multistage reactive tank of externally positioned type settling tank and use oxidation ditch as circulation waterway type reactive tank.
(A) stage of Fig. 3 is the technology that mixing such as denitrification reaction, dephosphorisation reaction, organism decomposition and nitric acid reaction are carried out, if remove subsequent treatment process, other the first wastewater treatment stage (A), reaction content and structures etc. with first embodiment are identical, omit it at this and specify.
In the stage shown in (A-1) of Fig. 3 (to call " three wastes water treatment stage " in the following text), will be converted to the aerobism condition at first reactive tank that (A) stage of described Fig. 3 is moved under with the anaerobism condition.And, change stream and move not flowing under the zero load condition of described inflow water, thus only need be used for the interior oxygen of breathing of giving birth to of remaining organic decomposition and active sludge, so zmount of oxygen consumption is few.
Therefore, in this stage, the inside of described first reactive tank 11 is converted to aerobism rapidly, state before the mud that discharges phosphorus under the anaerobism condition will be got back to release once more, further excessively absorb a large amount of phosphorus, the remainder active sludge that also will concentrate phosphorus by such excess ingestion phosphorus is discarded, removes dephosphorization from water.
In stage, can change the stream in (A) stage of described Fig. 3 at (A-1) of above-mentioned Fig. 3, flow into former water and flow into second reactive tank 21, and flow out treating water through second settling tank 24 without first reactive tank.Above-mentioned second reactive tank 21 also can decompose and nitric acid reaction while keeping the aerobism condition to carry out organism.Shown in Fig. 3 (A-1), it is the transitional period translate phase in (B) stage of Fig. 3 that described three wastes water treatment stage is equivalent to from (A) phase transition of Fig. 3, if but omit described three wastes water treatment stage and in early days the stage from (A) phase transition of Fig. 3 (B) stage for Fig. 3, the outflow water of first reactive tank 11 that makes the anaerobism condition before being converted to aerobism through first settling tank 14, flow out as treating water, so undecomposed organism and fine floss etc. will flow out, and influence water quality treatment.Therefore, described three wastes water treatment stage has greatly the function as the transitional period translate phase, i.e. the excess ingestion phosphorus and the settleability etc. of decomposing remaining organism and improving mud under zero load aerobism condition.
In stage, as the technology of carrying out denitrogenation, dephosphorization and nitric acid reaction, if remove the effect and the stream change process of first, second reactive tank 11,21, the reaction form will be identical with described (A) stage at (B).Just,, continue to move in the stage at described (B) with the aerobism state in (A), (A-1) stage, the change stream flow into former water and stockpiles in described second reactive tank 21 of oxynitride, and inflation mechanism will be stopped running, under oxygen free condition, move, and carry out denitrification reaction.And first reactive tank 11 will move inflation mechanism, is converted to the aerobism condition, and proceeds organism and decompose and nitric acid reaction.
In the wastewater treatment stage shown in (A) of Fig. 3, will flow into former water successively through first reactive tank 11, first settling tank 14, second reactive tank 21, second settling tank 24, flow out treating water.And in the stage, change the stream in described (A) stage at (B), and make to flow into former water successively through second reactive tank 21, second settling tank 24, first reactive tank 11, first settling tank 14, flow out treating water.Just, the denitrification reaction and the dephosphorisation reaction that carry out in first reactive tank 11 in (A) stage of Fig. 3 carry out at second reactive tank 21 in the stage at Fig. 3 (B), the nitric acid reaction that carries out in second reactive tank 21 in (A) stage of Fig. 3 carries out at first reactive tank 11 in the stage at Fig. 3 (B), just intersect and carry out, the reaction content in (B) stage of Fig. 3 and the reaction content in Fig. 3 (A) stage are intersected consistent mirror mutually.
Except the reaction content that changes stream, first reactive tank 11, second reactive tank 21, also the reaction content with described three wastes water treatment stage is identical in the wastewater treatment stage shown in (B-1) of Fig. 3 (to call " the 4th wastewater treatment stage " in the following text).Just, first reactive tank 11 moves under the aerobism state, and produces inflow and outflow, and second reactive tank 21 is not influenced by flow and organic loading, carries out no-load run at the aerobism state.
Three wastes water treatment stage shown in Fig. 3 (A-1) is by the change stream, make the former water of inflow flow out treating water through second reactive tank 21, second settling tank, 24 backs, and (B-1) stage of Fig. 3 is passed through the change stream, makes the former water of inflow flow out treating water through first reactive tank 11, first settling tank, 14 backs.The reaction content in the 4th wastewater treatment stage is to intersect consistent mirror mutually with the reaction content of first, second reactive tank 11,21 of described three wastes water treatment stage technology.In addition, described the 4th wastewater treatment stage is equivalent to return to from (B) stage of Fig. 3 the transitional period translate phase in (A) stage of Fig. 3.
In addition, increase initial precipitation pond 21 and fermenter 42 and above-mentioned second embodiment that primary sludge, organic waste and fermented liquid thereof are used in the denitrogenation dephosphorization also is applicable in the present embodiment.But, in the present embodiment, the input of organic waste or its fermented liquid is limited to first reactive tank in described (A) stage of carrying out denitrification reaction and dephosphorisation reaction and second reactive tank 21 in described (B) stage, if drop into organic waste or its fermented liquid in three wastes water treatment stage (A-1) and the 4th wastewater treatment stage (B-1), to become the organic loading that hinders nitrification, therefore preferably not drop into.
In addition, present embodiment is different with first or second embodiment, also can make with the following method: the former water that will flow into flow into (first reactive tank 11 in (A) stage in the reactive tank that moves that carries out the denitrogenation dephosphorisation reaction under anaerobic or anaerobism condition, (B) second reactive tank 21 in stage), with (second reactive tank 21 in (A-1) stage in the reactive tank that under the aerobism condition, moves that carries out nitric acid reaction, (B-1) first reactive tank 11 in stage), so can save the setting of described fermenter 42, retain primary sludge, put in the anaerobic or the reactive tank in anaerobism stage temporarily, end in the reactive tank in aerobism stage, to drop into.
Fig. 4 is the schema of the 4th embodiment of expression denitrogenation dephosphorizing method of the present invention.
In above-mentioned the 3rd embodiment, also there is following situation, be (A) of Fig. 3 in the stage first reactive tank 11 under the anaerobism condition, move, first settling tank 14 also can be converted to the anaerobism state, so the remaining organism that will residually be untreated in the supernatant water, reduce settleability, fine floss swims.Even be (A-1) of Fig. 3 and under the aerobism condition, move described first reactive tank 11 from (A) phase transition of described Fig. 3, (A) of Fig. 3 in the stage water as anaerobic described first settling tank 14 inside also can be flowed out the inflow of water and carry mud change by first reactive tank, so need decompose for a long time at the residual dissolved organic matter in first settling tank, 14 inside, stablize fine floss and recover settleability.
Therefore, present embodiment is different with the 3rd embodiment, carry out air supply and the stage ((A-1a) of Fig. 4 and (B-1a) of Fig. 4) of air agitation and the stage ((A-1b) of Fig. 4 and (B-1b) of Fig. 4) of implementing original sedimentation function in non-inflated state in second settling tank in (B-1) stage of first settling tank 14 in described (A-1) stage of under zero load condition, moving and described Fig. 3, even remove in early days and stable dissolved organic matter and fine floss and outside effusive next stage so be converted to, also can keep good outflow water quality.Therefore, the waste water treatment process in the present embodiment comprises following 6 stages.
Present embodiment comprises:
The first wastewater treatment stage (A), at this stage change stream, the former water that makes inflow is successively through first reactive tank 11, first settling tank 14, second reactive tank 21 and second settling tank 24, flow out treating water, described first reactive tank 11 moves under the anaerobism condition, and described second reactive tank 21 moves under the aerobism condition;
The 5th wastewater treatment stage (A-1a) at this stage change stream, made to flow into former water successively through second reactive tank 21, second settling tank 24, flowed out treating water.Second reactive tank 21 keeps the aerobism condition, first reactive tank 11 and first settling tank 14 move under the no load condition that the outflow that does not flow into former water and treating water from the outside is gone into, described first reactive tank 11 moves under the aerobism condition, to described first settling tank, 14 air supplies and inflate and stir;
The 6th wastewater treatment stage (A-1b) at this stage change stream, made to flow into former water successively through second reactive tank 21, second settling tank 24, flowed out treating water.Second reactive tank 21 keeps the aerobism condition, and first reactive tank 11 and first settling tank 14 move under the no load condition that the outflow that does not flow into former water and treating water from the outside is gone into.First reactive tank 11 moves under the aerobism condition, the original sedimentation function of first settling tank, 14 performances;
The second wastewater treatment stage (B), at this stage change stream, make and flow into former water successively through second reactive tank 21, second settling tank 24, first reactive tank 11 and first settling tank 14, flow out treating water, second reactive tank 21 moves under the anaerobism condition, and described first reactive tank 11 moves under the aerobism condition;
In the 7th wastewater treatment stage (B-1a), at this stage change stream, the former water that makes inflow flows out treating water successively through first reactive tank 11, first settling tank 14.First reactive tank 11 keeps the aerobism condition, second reactive tank 21 and second settling tank 24 move under the no load condition that the outflow that does not flow into former water and treating water from the outside is gone into, second reactive tank 21 moves under the aerobism condition, to second settling tank, 24 air supplies and inflate and stir;
The 8th wastewater treatment stage (B-1b), at this stage change stream, the former water that makes inflow is successively through first reactive tank 11, first settling tank 14, flow out treating water, described first reactive tank 11 keeps the aerobism condition, and described second reactive tank 21 and second settling tank 24 move under the no load condition that the outflow that does not flow into former water and treating water from the outside is gone into.Second reactive tank 21 moves under the aerobism condition, the original precipitation function of described first settling tank, 14 performances.
In the present embodiment, first settling tank 14 and second settling tank 24 in the 7th wastewater treatment stage (B-1a) in the 5th wastewater treatment stage (A-1a) as the initial stage in idle running stage, by to direct air supply of the settling tank of no load condition and air agitation, make the settling tank of anaerobism state in the last stage be converted to the aerobism condition rapidly, even will precipitate and be converted to the first wastewater treatment stage (A) and the second wastewater treatment stage (B) in the 6th wastewater treatment stage (A-1b) of next stage and the 8th wastewater treatment stage (B-1b) at the mud on the air agitation state is floated downward, also can flow out the supernatant water of good water quality, obtain stable in early days.
In the present embodiment, also be suitable for above-mentioned second embodiment, promptly increase initial precipitation pond 41 and fermenter 42, and primary sludge, organic waste and fermented liquid thereof are used in the denitrogenation dephosphorisation reaction.But, the input of organic waste or its fermented liquid is limited to first reactive tank 11 and second reactive tank 21 in the described second wastewater treatment stage (B) in the described first wastewater treatment stage (A) of carrying out denitrification reaction and dephosphorisation reaction, if drop into three wastes water treatment stage (A-1) and the 4th wastewater treatment stage (B-1), will become the organic loading that hinders nitrification, therefore had better not drop into.
Present embodiment is different with first or second embodiment, the former water that flows into flow into carry out denitrification reaction and dephosphorisation reaction, the reactive tank that under anaerobic or anaerobism condition, moves (first reactive tank 11 in the first wastewater treatment stage (A), second reactive tank 21 in the second wastewater treatment stage (B)) in, and flow into and carry out nitric acid reaction, the reactive tank that under the aerobism condition, moves (second reactive tank 21 in the 5th wastewater treatment stage (A-1a) and the 6th wastewater treatment stage (A-1b), first reactive tank 11 in the 7th wastewater treatment stage (B-1a) and the 8th wastewater treatment stage (B-1b)) in, so can save the setting of described fermenter, retain primary sludge and put in the anaerobic or the reactive tank in anaerobism stage termination input primary sludge in the reactive tank in aerobism stage temporarily.
High-efficient treatment method of the present invention has by with the reactive tank of inflation performance intermittently with have the cellular system that mud carries the settling tank of facility to form, utilizes intermittently inflation and changes the stream method, can stablize and removes organism and nitrogen phosphorus in the waste water effectively.
Claims (10)
1. the high-efficient treatment method of a waste water is characterized in that, described method is by forming with the next stage:
The first wastewater treatment stage, make the former water of inflow successively through first reactive tank, first settling tank, second reactive tank and second settling tank in this stage, discharge treating water then, described first reactive tank moves under the anaerobism condition, and described second reactive tank moves under the aerobism condition;
The second wastewater treatment stage, make the former water of inflow successively through second reactive tank, second settling tank, first reactive tank and first settling tank in this stage, discharge treating water then, described first reactive tank moves under the aerobism condition, and described second reactive tank moves under the anaerobism condition;
In described each wastewater treatment stage, will separate respectively with the sedimentary active sludge of second settling tank and be transported to described first reactive tank and second reactive tank respectively at first settling tank.
2. the high-efficient treatment method of waste water as claimed in claim 1, it is characterized in that, also comprise the subsequent treatment process that forms by the 3rd reactive tank and equipment for separating liquid from solid, will flow out water and handle again that wherein said the 3rd reactive tank is used for handling the outflow water of discharging in described each wastewater treatment stage.
3. the high-efficient treatment method of waste water as claimed in claim 1, it is characterized in that, increase the biofilm filtration device that is used for handling at described each effusive outflow water of wastewater treatment stage, to flow out water handles again, wherein said biofilm filtration device is filled with biofilm carrier or filtering material, and can make the microorganic adhesion breeding.
4. the high-efficient treatment method of waste water as claimed in claim 1, it is characterized in that, increase filtration unit, will flow out water and handle, wherein said filtration unit is selected from sand filter or the Microtraps net that can handle effusive outflow water in described each wastewater treatment stage.
5. the high-efficient treatment method of waste water as claimed in claim 1 is characterized in that,
The first aerobism reactive tank is set after described first reactive tank, the second aerobism reactive tank further is set after described second reactive tank;
In the first wastewater treatment stage, the former water that makes inflow is successively through first reactive tank, the first aerobism reactive tank, first settling tank, second reactive tank, the second aerobism reactive tank and second settling tank, described first reactive tank moves under the anaerobism condition, and described second reactive tank moves under the aerobism condition;
In the second wastewater treatment stage, the former water that makes inflow is successively through second reactive tank, the second aerobism reactive tank, second settling tank, first reactive tank, the first aerobism reactive tank and first settling tank, described first reactive tank moves under the aerobism condition, and described second reactive tank moves under the anaerobism condition.
6. the high-efficient treatment method of waste water as claimed in claim 1 is characterized in that,
The initial precipitation pond further is set, will flows into and flow into described first or second reactive tank after former water passes through described initial precipitation pond.
7. the high-efficient treatment method of waste water as claimed in claim 1 is characterized in that,
When described first reactive tank and second reactive tank move, drop into external carbon source under the anaerobism condition.
8. the high-efficient treatment method of waste water as claimed in claim 5 is characterized in that,
On described mud conveying stream, the mud denitrifying tank is set.
9. the high-efficient treatment method of waste water as claimed in claim 7 is characterized in that,
Described external carbon source is the disengaging filtered liquid of organic waste or organic waste, and described organic waste comprises recovery ight soil, animal waste, former rubbish, food-processing waste.
10. the high-efficient treatment method of waste water as claimed in claim 7 is characterized in that,
Described external carbon source is the fermentation filtered liquid that organic waste is carried out organic acid fermentation, and described organic waste comprises recovery ight soil, animal waste, former rubbish, food-processing waste.
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| KR1020040030095A KR100581751B1 (en) | 2004-04-29 | 2004-04-29 | Advanced Wastewater Treatment Method with Solids Separation between the Reactors, Dynamic Flow and Intermittent Aeration |
| KR200430095 | 2004-04-29 |
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| CN103695352A (en) * | 2013-12-17 | 2014-04-02 | 宋青春 | Method for manufacturing water-quality treating agent specific to waste water of Chinese date processing plant by adopting microbial fermentation process |
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| US4966705A (en) * | 1984-08-24 | 1990-10-30 | Austgen Biojet Holdings Pty. Ltd. | Waste water treatment plant and process |
| US5354471A (en) * | 1992-10-19 | 1994-10-11 | Timpany Peter L | Method of treating wastewater |
| US5605629A (en) * | 1992-08-03 | 1997-02-25 | Rogalla; Frank A. | Method for the removal of nutrients containing carbon, nitrogen and phosphorus |
| CN1203197A (en) * | 1997-06-23 | 1998-12-30 | 韩相培 | Waste water treatment method for removing nitrogen and phosphorus and plant thereof |
| CN1320569A (en) * | 2000-04-26 | 2001-11-07 | 韩相培 | Method and apparatus for denitrogenating and phosphorous removal treatment of sewage |
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|---|---|---|---|---|
| JPS63166499A (en) * | 1986-12-29 | 1988-07-09 | Kawasaki Heavy Ind Ltd | Apparatus for biological denitrification/ dephosphorization treatment of sewage |
| DK158893C (en) * | 1988-06-27 | 1991-01-21 | Krueger As I | PROCEDURE AND PLANT FOR BIOLOGICAL CLEANING OF WASTE WATER BY THE ACTIVE SLAM METHOD |
| KR100243565B1 (en) * | 1997-06-03 | 2000-02-01 | 이상일 | Apparatus for purifying wastewater |
| KR100448305B1 (en) * | 2001-05-29 | 2004-09-10 | 주식회사 한화건설 | The removal method of nutrition salts in waste water |
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2004
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966705A (en) * | 1984-08-24 | 1990-10-30 | Austgen Biojet Holdings Pty. Ltd. | Waste water treatment plant and process |
| US5605629A (en) * | 1992-08-03 | 1997-02-25 | Rogalla; Frank A. | Method for the removal of nutrients containing carbon, nitrogen and phosphorus |
| US5354471A (en) * | 1992-10-19 | 1994-10-11 | Timpany Peter L | Method of treating wastewater |
| CN1203197A (en) * | 1997-06-23 | 1998-12-30 | 韩相培 | Waste water treatment method for removing nitrogen and phosphorus and plant thereof |
| CN1320569A (en) * | 2000-04-26 | 2001-11-07 | 韩相培 | Method and apparatus for denitrogenating and phosphorous removal treatment of sewage |
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| CN1693234A (en) | 2005-11-09 |
| KR20050104710A (en) | 2005-11-03 |
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