CN1229768A - Apparatus and method for treating sewage and wastewater biologically - Google Patents
Apparatus and method for treating sewage and wastewater biologically Download PDFInfo
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- CN1229768A CN1229768A CN99101322A CN99101322A CN1229768A CN 1229768 A CN1229768 A CN 1229768A CN 99101322 A CN99101322 A CN 99101322A CN 99101322 A CN99101322 A CN 99101322A CN 1229768 A CN1229768 A CN 1229768A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
- C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention enhances the efficiency of contact of bacteria with air by generating air bubbles by a membrane to reduce reaction tank capacity. A sewage/waste water treatment apparatus is constituted of an aeration tank, an air bubble providing means, an oxygen free anaerobic tank performing the removal of nitrogen and the discharge of phosphorus and a sedimentation tank. A sewage/waste treatment method includes a stage wherein inflow water flows in the aeration tank, a stage forming fine air bubbles, a stage feeding sludge to the oxygen-free anaerobic tank, a stage removing nitrogen from a sludge mixed soln. to discharge phosphorus, a stage oxidizing unremoved org. matter and a nitrogen component to recirculate phosphorus while taking in a large amt. of phosphorus and a stage discharging treated water to a wafer. In this case, the aeration tank and the oxygen-free anaerobic tank are constituted as a cylindrical double pipe to maximize the concn. of bacteria and org. matter, phosphorus and nitrogen can be effectively removed.
Description
The present invention relates to handle the devices and methods therefor of water, waste water down, particularly relate to according to the aerator tank of the oxidation operation groove of microorganism, carry out handling the devices and methods therefor of water, waste water down with biologically for denitrogenating with the anaerobic and the anaerobism groove of phosphorus and the function of the sedimentary settling bath of microorganism being concentrated in the treatment trough of a two-double cylinder with biologically.
Usually, extensively popularize the following water that uses now, the biological treatment unit of waste water has the aerator tank as the oxidation operation groove, the sedimentary settling bath of microorganism that will grow up in above-mentioned aerator tank, so that oxidation operation and removing.Except remove organism, denitrogenate device with phosphorus in addition, the denitrifying tank and the anaerobism groove that are provided with horizontal streaming respectively with above-mentioned aerator tank, so as through out-of-date remove in the waste water the process of nitrogenous and phosphorus.But have such problem: be provided with because this always used biological processes device is horizontal streaming ground, therefore, required area of base is big; And, owing to the buildings of above-mentioned aerator tank and settling bath is constructed with cement, therefore, required executive cost height.
On the other hand, as to the air fed method of above-mentioned aerator tank, always be a kind of air bell to be installed in above-mentioned aerator tank bottom, it has the porous plate of pottery, cloth, binding resin and pipe to produce bubble, so that produce the globule significantly, come delivering oxygen with such method.But, when microorganism concn is brought up to high density in above-mentioned aerator tank, because this always used oxygen delivery mode makes the oxygen consumption speed of microorganism faster than air feed speed, therefore, oxygen phenomenon soluble in water appears.Therefore, when handling the high density organic wastewater, owing to be subjected to the restriction of oxygen transport rate, the concentration that produces microorganism can not be higher than 4, the problem of 000mg/l.
Also have,,, transferpump must be set in addition for sedimentary mud is transferred to aerator tank because secondary sedimentation groove and aerator tank branch are arranged.Moreover, being provided with scraper plate (scraper) in order to prevent precipitated mud from the mud pipe of carrying, stopping up, this machinery and the electrical means that relates to scraper plate and transferpump has very complicated structure.
On the other hand, because of always for only being provided as the aerator tank of oxidation operation groove in used activated sludge (sludge) method of organic matter removal, but in order to remove nitrogen beyond the organism and EZE Austria method (A of phosphorus
2/ O: anaerobism-anaerobic is aerobic) and Baden's slope method (Bardenpho: anaerobism-anaerobic-aerobic-anaerobic-aerobic), except that aerator tank, benefit is made as the denitrifying tank (Denitrification fank) of the anaerobic state of denitrogenating and is the anaerobism groove (Anaerobic tank) that discharges phosphorus in addition.At this moment, in above-mentioned denitrifying tank in order to remove the nitrogen oxygen nitrogen that produces from aerator tank, also must be provided for aerator tank mud liquid is flowed to internal recycling pumps that denitrifying tank is carried, that can have the speed of 2～6 times of inflow flows, and in each reactive tank, be provided for the agitator of uniform mixing mud mixed solution as anaerobism groove and denitrifying tank, when removing outside the organic operation, when restock is implemented dephosphorization and is denitrogenated operation, compare with used activated sludge method always, the structure of its operation sequence and mechanical facility are more complicated.
As mentioned above, always used biological processes device is with horizontal streaming setting, except that aerator tank, denitrifying tank under the also promising oxygen free condition of denitrogenating and all divide and be arranged for making phosphorus discharge used anaerobism groove and settling tank etc., therefore not only required area of base is big, and all whipping appts, transferpump, scraper plate etc. need be set in each reactive tank, for carry the pump of mud to each operation, therefore, there are the many problems of mechanism complexity and cost of equipment.
On the other hand, in organism is handled, as air supplying method always, when handling the high density organic wastewater, the oxygen consumption speed of microorganism is faster than air feed speed, thereby has because of the oxygen transport limitedly, and is difficult to keep high microorganism concn.
Because the problem of this existence the purpose of this invention is to provide with biologically and handles the devices and methods therefor of water, waste water down.Wherein, use as micro-filtration membrane (microfiltration as air supplying method, the micropore size is 0.1～100 μ m) and ultrafilter membrane (ultrailltration, the micropore size is 1.5～10 μ m) such always used air bell of film replacement, make and produce solvability oxygen or utmost point superfine air bubble, to improve the contact efficiency of microorganism and air, the result, because the oxygen transport increases, make microorganism concn can maintain 10,000mg/l is above and the capacity of reactive tank can be reduced significantly.
Another purpose of the present invention provides with biologically and handles the devices and methods therefor of water, waste water down, in circular or just dimetric tube double-deck biological reaction tank is set, and therefore, constitutes the aerobism condition in air fed regional space; In non-air fed regional space, constitute anaerobic and anaerobism condition, in a reactive tank, not only constitute the environment of removing organism but also constituting dephosphorization and nitrogen.
The present invention also provides following biologically to handle water, waste water plant and method thereof down, owing to the bilayer that reactive tank is constituted vertical in form separates shape; Be the propulsive force that discharges the phosphorus in the anaerobism groove and denitrogenate the air of supplying with to aerator tank, the mud mixed solution of aerator tank can be shifted to the groove that forms anaerobic and anaerobism condition, this compares with always used phosphorus, nitrogen reaction facility, and treatment facility of the present invention is simple.
For solving above-mentioned task, the device of water, waste water comprised under biologically of the present invention was handled: the contacted aerator tank of mixed solution that is used to make air composition and activated sludge; Make device have the conveying propulsive force of pre-sizing, form bubble again, so that the bubble generator that the inflow water that flows into above-mentioned aerator tank inside and aerator tank mud mixed solution contact and carry; Be coated on the outside of above-mentioned aerator tank, hold inflow water and aerator tank mud mixed solution, finish anaerobic and the anaerobism groove of denitrogenating and discharging phosphorus by biological respinse simultaneously to the outside overflow of aerator tank; Be coated on the outside of above-mentioned anaerobic and anaerobism groove, be contained in circulation of above-mentioned aerator tank and anaerobic and anaerobism groove and outflow and the settling bath of precipitation mud.
The present invention handles down with biologically, and the method for water, waste water has following steps: by sieve remove the following water of foreign material, the inflow water of waste water flows into the first step of aerator tank; The air composition that sprays by the air bell that is installed on above-mentioned aerator tank contacts second step that forms micro bubble with inflow water; Make to inflow water and the overflow of aerator tank mud that above-mentioned aerator tank flows into and be transported to above-mentioned anaerobic and the anaerobism groove in third step; With the inflow water that flows into above-mentioned anaerobic and anaerobism groove as carbon source, with the nitrogen of removing the high mud mixed solution of nitrogen oxygen nitrogen concentration and the 4th step that discharges the phosphorus in the mud; Flow into aerator tank again from above-mentioned anaerobic and the effusive mud of anaerobism groove and settling tank mud, so that organism of not removing and nitrogen component oxidation, and the 5th step of excessive absorption phosphorus; After finishing the 5th step, in mud and inflow water mixing that flows into from the outside and the 6th step of carrying out recirculation that aerator tank generated; After finishing the 6th step, in settling tank, make the microorganism solid-liquid separation, precipitation mud and the 7th step that treating water discharges by overflow port.
Following with reference to accompanying drawing 1 explanation relevant embodiment of the present invention.
Accompanying drawing 1 is that the present invention handles an example structure synoptic diagram of water, waste water plant down with biologically.
Symbol is described as follows among the figure
1: flow into water 2: aerator tank
3: anaerobic and anaerobism groove 4: settling bath
5: air bell 6: overflow port
7: mix guide plate 8: stir pump in the water
Strut member 11 in 9: the first: gas blower
12: treating water 13: the anti-floating net of mud
Strut member 15 in 14: the second: the lid of reactive tank
The present invention handles down with biologically, and the device and method of water, waste water is shown in Fig. 1.It has be used for contain by the sieve (not shown) remove inclusion following water, waste water inflow water 1 and at the aerator tank 2 of the contacted internal space of air composition of the mixed solution of activated sludge (sludge).Be provided with air bell 5 in the bottom of above-mentioned aerator tank 2,, spray air and form micro bubble from air bell 5 so that the water and the mud mixed solution of portion's inflow contact with air composition from it.Be connected with gas blower 11 or the compressor that extraneous air is provided at above-mentioned air bell 5.At this moment, the propulsive force owing to the air that sprays from above-mentioned air bell 5 makes the outside overflow to aerator tank 2 of inflow water and mud mixed solution.
In the preferred embodiment of the present invention, if in above-mentioned aerator tank 2, flow under the situations such as fecaluria and herding waste water, the concentration of microorganism must be maintained high density, at this moment, use the such film of micro-filtration membrane and ultrafilter membrane to replace diffuser tube 5, when using film to replace above-mentioned air bell 5, under the still insufficient situation of conveying propulsive force of mud, the structure that stirs pump 8 in the water to be installed, mix and carry the required propulsive force of mud to provide in the upper inside of above-mentioned aerator tank 2.
Form the anaerobic and the anaerobism groove 3 of the defined diameter bigger than its diameter in the outside of above-mentioned aerator tank 2, because of the conveying propulsive force from the air of above-mentioned air bell ejection makes inflow water and the high aerator tank mud mixed solution of its nitrogen oxygen nitrogen concentration to the outside overflow of aerator tank carry out biological respinse, denitrogenate and discharge phosphorus.At a plurality of mixing guide plates 7 that the inside of above-mentioned anaerobic and anaerobism groove 3 is provided with sawtooth form, this mixing guide plate 7 successfully mixes following water, the waste water in the mud mixed solution of aerator tank 2 overflows and inflow.
As mentioned above, above-mentioned aerator tank 2 and anaerobic and anaerobism groove 3 are made of axial double-deck right cylinder, and its upper and lower part forms open structure, and above-mentioned aerator tank 2 and anaerobic and anaerobism groove 3 support the interval that keeps therebetween by first strut member 9.In the present embodiment, can see the structure that above-mentioned double-deck right cylinder is formed tubular, but also be not limited thereto, also can form such polygon housings such as ellipse, four jiaos, hexagonal certainly.Have again, outside at above-mentioned anaerobic and anaerobism groove 3 is provided with settling bath 4, settling bath 4 is to hold the silt deposit that is circulated in above-mentioned aerator tank 2 and anaerobic and anaerobism groove 3, be provided with second strut member 14 in the internal space of above-mentioned settling bath 4, this second strut member 14 supports and keeps anaerobic and anaerobism groove 3 in the state of certain intervals, and makes its location.
Moreover, in the present embodiment, the bottom of above-mentioned aerator tank 2, anaerobic and anaerobism groove 3, settling bath 4 forms to have with 1/10～1/20 angle structure of tilted shape to the inside, makes by above-mentioned anaerobic and anaerobism groove and effusive mud and settling tank mud rely on and successfully flowed in the aerator tank 2 by the propulsive force that provides air to produce.
On the other hand, bosom at above-mentioned settling bath 4 is provided with the anti-floating net 13 of mud, be used to prevent that settling tank mud from floating owing to the specific surface area (Specific Surface Area) due to nitrogen and the air filled cavity increases, on the periphery on the top of above-mentioned settling bath 4, overflow port (weir) 6 is installed, be used for accommodating the treating water of overflow and, be provided with the opening cap 15 that prevents inflow usefulness such as rainwater on the top of settling bath 4 to outside drain by settling bath 4 tops.
Now the above-mentioned active state of the present invention that constitutes is described as follows.
At first, when the inflow water 1 of removing foreign material by above-mentioned sieve flows into the top of aerator tank 2, above-mentioned inflow water 1 and rely on the propulsive force of the air of discharging from air bell and the mud of transferring to the aerator tank on top is evenly dispersed and flows into anaerobic and anaerobism groove 3 together.As a result, above-mentioned inflow water 1 under with the aerobism condition oxidized before, discharge required phosphorus source and use as the phosphorus with anaerobism groove 3 denitrogenated at anaerobic groove 3.
Between the top and middle portion of above-mentioned anaerobic and anaerobism groove 3, inflow water and aerator tank mud mixed solution collide zigzag mixing guide plate and mix fully, in this case, formation exhausts the anaerobic state of oxygen because of microorganism, with the organism that flows into water as carbon source, produce with in the aerator tank mud mixed solution the reaction that is reduced to nitrogen and removes of nitrogenous oxygen nitrogen.Then, in the middle portion and the bottom of above-mentioned anaerobic and anaerobism groove 3,, make by denitrogenating the required back of reaction organism remaining, that flow into water 1 to discharge intracellular phosphorus as carbon source owing to dissolved oxygen and exhausting of nitrogen oxygen nitrogen form the anaerobism condition.To flow into flow as benchmark, the residence time in anaerobic and anaerobism groove 3 is about 1 hour.
Rely on by propulsive force that air supply produced from above-mentioned anaerobic and the effusive mud of anaerobism groove and settling tank mud and to flow into aerator tank 2.At this moment, the inboard of carrying out lower bottom part, aerator tank 2, anaerobic and the anaerobism groove 3 of the settling bath 4 of above-mentioned settling tank task all tilts with 1/10～1/20 angle, therefore, precipitating mud and conveying mud relies on that come from aerator tank, successfully mobile to aerator tank 2 by the propulsive force due to the air supply.
Through behind the said process, the organism that in above-mentioned aerator tank 2, will in anaerobic and anaerobism groove, not be removed carry out oxidation and in flowing into water institute's nitrogen containing component carry out oxidation, and in the anaerobism groove, excessively absorb undelivered phosphorus and flow into contained phosphorus in the water.Aerator tank mud mixes with inflow water 1 by means of the propulsive force due to air supply once again, flow into to anaerobic and anaerobism groove 3 again, this cycling program continues to carry out repeatedly, removes by absorbing microorganism intermittent ground that organism the grows up mud at the bottom of with settling tank.
Here, the hydrological residence time in above-mentioned aerator tank 2 kept 4～8 hours, and F/M is maintained at about 0.1kg BOD/kg MLSSd than (Food/Microorganism).
Moreover, be under the situation of fecaluria and the sort of high-enriched organics of herding waste water as the inflow water that in above-mentioned aerator tank 2, flows into, the concentration of microorganism must be remained on high density.At this moment, use above-mentioned film, supply sufficient dissolved oxygen, make microorganism concn maintain high density; When the conveying propulsive force of mud is still not enough when only using above-mentioned film, necessary propulsive force in then can and carrying by the mixing of stirring pump 8 acquisition mud in the water.Otherwise,, when 000mg/l is following, then use air bell always to obtain oxygen supply and the required propulsive force of mud conveying when microorganism concn is 4.
The residence time of microorganism in settling tank 4 through above-mentioned aerator tank 2 and anaerobic and anaerobism groove 3 is 2～3 hours, in this time, be separated into solids and treating water, the treating water 12 that has precipitated mud moves to top, through settling bath 4 and after the overflow, from overflow port 6 dischargings.
Below, compare by being applicable to experimental example of the present invention and equipment therefor always.
Comparing embodiment 1
In this experiment, pass air into speed setting at 30ml/min, use the general air-diffuser of ceramic disc air bell and two kinds of concentration of hollow fiber film air-diffuser of polysulfones (polysulphone) material that pore size (pore size) is 0.2 μ m to compare dissolved oxygen due to microorganism concn (MLSS).As known from Table 1, microorganism concn, reduces to below the 2.5mg/l as the suitable dissolved oxygen concentration of biological processes facility aerator tank when 000ml/l is above 6 with general air bell the time; And when using micro-filtration membrane and ultrafilter membrane, then remain on more than the 2.5mg/l, because the oxygen transmission speed of film air-diffuser is very high, so can make microorganism remain on high density.
The concentration ratio of the dissolved oxygen that table 1 causes with microorganism concn
| MLSS concentration (mg/l) | 2,000 | ?4,000 | ?6,000 | ?8,000 | ?10,000 | |
| General air bell (dissolved oxygen mg/l) | 5.4 | ?2.5 | ?0.4 | ?0 | ?0 | |
| Film (dissolved oxygen mg/l) | Micro-filtration membrane | 8.0 | ?5.6 | ?4.5 | ?3.2 | ?3.0 |
| Ultrafilter membrane | 10.0 | ?8.0 | ?7.4 | ?5.3 | ?4.2 | |
Comparing embodiment 2
For to the inventive method be designed to cross-flow method always and remove efficient and compare, standard activity mud (sludge) method and EZE Austria (A have been carried out with regard to organism and nitrogen, phosphorus
2/ O: method anaerobism groove-anaerobic groove-aerobic groove).
What use as flowing into water is that organism and nitrogen, the herding waste water that phosphorus concentration is very high, the processing flow of each operation are 500l/d, under with same inflow regimen condition, and three method parallel runnings.Table 2 is operating conditions of each method, and the microorganism concn of standard activity mud (sludge) method and EZE method difficult to understand is about 4,000mg/l; And in the inventive method, using pore size as the air diffuser mode is the hollow fiber film (Hollow Fiber Membrane) of the polysulfone material of 0.2 μ m, and microorganism concn is remained on 8,000～10,000mg/l.
Table 2 operating condition
| Zero standard activity mud method aeration tank F/M ratio: 0.1kg BOD/kg MLSSd is in the holdup time of aeration tank: 6 hours MLSS concentration: 4; 0,00m,g/1 zero EZE method difficult to understand is in the holdup time of anaerobism groove: 1 hour holdup time at the anaerobic groove: 2 hours aeration tank F/M ratios: 0.1kg BOD/kg MLSSd is in the holdup time of aeration tank: 6 hours MLSS concentration: 4; The holdup time of 000mg/l zero the inventive method in the groove that forms anaerobic and anaerobism groove condition: 30 minutes aeration tank F/M ratios: holdup time in the 0.1kg BOD/kg MLSSd aeration tank: 6 hours MLSS concentration: 8; 000～10,000mg/l |
Table 3 has been listed and will have been represented with mean value through the data of running in about 6 months, compares with standard activity mud (sludge) method, then also is provided with the EZE method difficult to understand of anaerobism groove and denitrifying tank operation except that aerator tank, and the rate of removing of its inorganics and nitrogen, phosphorus is good; And compare with EZE method difficult to understand, it is more outstanding then to make microorganism maintain the rate of removing of the organism of the inventive method of high density and phosphorus, nitrogen.
The operation result that table 3 lists standard activity mud, EZE Austria and the inventive method compares.
Table 4 is listed the SVI of standard activity mud, EZE Austria and the inventive method, the phosphorus content of mud compares.
Table 3 standard activity mud method
EZE method difficult to understand
The inventive method
Table 4
| Project | ????COD | ????TKN | ??NO 3-N | ????T-P | ????T-N |
| Flow into water (mg/l) | ????2,000 | ????540 | ????- | ????65 | ????540 |
| Flow out water (mg/l) | ????350 | ????120 | ????250 | ????48 | ????370 |
| Remove efficient (%) | ????83 | ????78 | ????- | ????26 | ????31 |
| Project | ???COD | ????TKN | ???NO 3-N | ????T-P | ????T-N |
| Flow into water (mg/l) | ???2,000 | ????540 | ?????- | ????65 | ????540 |
| Flow out water (mg/l) | ???280 | ????80 | ????180 | ????28 | ????260 |
| Remove efficient (%) | ???86 | ????85 | ?????- | ????54 | ????52 |
| Project | ????COD | ????TKN | ???NO 3-N | ????T-P | ????T-N |
| Flow into water (mg/l) | ????2,000 | ????540 | ?????- | ????65 | ????540 |
| Flow out water (mg/l) | ????30 | ????10 | ?????10 | ????3 | ????20 |
| Remove efficient (%) | ????98 | ????98 | ?????- | ????95 | ????96 |
| Method | ????SVI | Aerator tank mud T-P/VSS (%) |
| Standard activity mud method | ????150 | ????1.5 |
| EZE method difficult to understand | ????100 | ????5.0 |
| The inventive method | ????80 | ????10.8 |
Moreover table 4 has been listed the precipitability index of each method and the phosphorus content of aerator tank mud, therefore, the phosphorus content that table 4 shows aerator tank mud with the inventive method for the highest; Its silt settling index is also fitst water.
The present invention discussed above is not subjected to the restriction of the foregoing description and accompanying drawing, all various displacements, distortion and changes in not breaking away from the technology of the present invention spirit scope all are possible, and this knows usually that to having in the technology of the present invention field the knowledgeable will be very clearly.
As mentioned above, the phosphorus content less than 2% in the method for always only setting the aerobism condition in the aerator tank mud, and according to the present invention, then be 6～10% in the method for carrying out anaerobism-aerobic condition repeatedly; And the inorganic content height in the mud, therefore, the precipitation threshold of mud is all more remarkable than method always, is obstructed because the remaining space beyond the circular biological reaction tank is supplied with air, therefore, does not have eddy current to take place, and for this reason, can be used as settling tank and uses.
Moreover, according to the present invention, as air feeder, replace the original air bell that produces air pocket and use micro-filtration membrane (microfiltration), the ultrafilter membrane films (Membrane) such as (ultrafiltration) that can produce micro bubble, make the oxygen transport improve, make the concentration maximization of microorganism owing to bubble is fine, not only descend water, waste water, even all in a reactive tank, just can finish contained high-enriched organics such as fecaluria and herding waste water and high nitrogen, removing of phosphorus, therefore, than always method therefor is all effective.
In addition, in reactive tank, rely on because of the propulsive force that air supply produced and just can carry mud, therefore, also have do not need other mud transferpump and be correlated with therewith all as the effect of equipment.
Claims (23)
1. handle the device of water, waste water down with biologically, it is characterized in that it comprises: the aerator tank that air composition is contacted with the mixed solution of activated sludge; For the inflow water that flows into above-mentioned aerator tank inside contact with aerator tank mud mixed solution and carries the conveying propulsive force, the air Bubble generating apparatus of formation bubble of sizing in advance; Be coated on above-mentioned aerator tank outside, hold and denitrogenate and discharge the anaerobic and the anaerobism groove of phosphorus by biological respinse simultaneously to the inflow water and the aerator tank mud mixed solution of the outside overflow of aerator tank; Be coated on above-mentioned anaerobic and anaerobism groove outside, be contained in the settling bath that above-mentioned aerator tank and anaerobic and the also effusive liquid of anaerobism groove circulation flow and precipitate mud.
2. the device with water, waste water under the biological respinse processing according to claim 1, it is characterized in that, also contain be installed on above-mentioned anaerobic and anaerobism groove the inside, will be from the inflow water and the complete blended mixing of mud mixed solution guide plate of above-mentioned aerator tank overflow.
3. handle the device of water, waste water down according to claim 1 is described with biologically, it is characterized in that, the bottom of above-mentioned aerator tank, anaerobic and anaerobism groove, settling bath has the shape that tilts to the inside with 1/10～1/20 angle.
4. handle the device of water, waste water down according to claim 1 is described with biologically, it is characterized in that, above-mentioned aerator tank portion's upside within it also contains in the water that the mud mixing force is provided and carries propulsive force and stirs pump.
According to described in the claim 1 to 4 each handle the device of water, waste water down with biologically, it is characterized in that the bubble generator is made of the film with many minute apertures.
6. according to each handles the device of water, waste water down with biologically described in the claim 1 to 4, it is characterized in that the bubble generator is made of air bell.
7. handle the device of water, waste water down according to claim 5 is described with biologically, it is characterized in that, above-mentioned film is made of in micro-filtration membrane or the ultrafilter membrane any.
8. handle the device of water, waste water down according to claim 1 is described with biologically, it is characterized in that above-mentioned aerator tank and anaerobic and anaerobism groove are made of the double wall tube with any shape in open cylindrical shell in its upper and lower part and the polygon housing.
9. handle the device of water, waste water down according to claim 1 is described with biologically, it is characterized in that, also contain promising maintenance and support spatial first strut member between above-mentioned aerator tank and anaerobic and the anaerobism groove.
10. handle the device of water, waste water down according to claim 1 is described with biologically, it is characterized in that, also be provided with in above-mentioned settling bath internal space to supporting anaerobic and localized second strut member of anaerobism groove.
11. according to each described device in the claim 1 to 4 with water, waste water under the biologically processing, it is characterized in that, also contain the anti-floating device of on defined position between above-mentioned settling bath and anaerobic and the anaerobism groove, installing, when treating water discharges, prevent the mud come-up of mud.
12. according to each describedly handles device of water, waste water down with biologically in the claim 1 to 4, it is characterized in that, also contain and be installed in treating water above-mentioned settling bath periphery, that hold overflow and to the overflow port of outside drain.
13. handle the device of water, waste water down with biologically according to claim 1 is described, it is characterized in that, also comprise being installed in above-mentioned settling bath top, lid for preventing that rainwater etc. from flowing into.
14. handle the method for water, waste water down with biologically, it is characterized in that, it contains following 7 steps: the inflow water of removing following water, the waste water of foreign material by sieve flows into the first step of aerator tank, and the air composition that sprays by the air bell that is installed on above-mentioned aerator tank contacts second step that forms micro bubble with inflow water; Flow into the inflow water and the overflow of aerator tank mud of above-mentioned aerator tank and be transported to above-mentioned anaerobic and the anaerobism groove in third step; From the inflow water that flows into above-mentioned anaerobic and anaerobism groove and mud mixed solution, denitrogenate and discharge the 4th step of phosphorus; Make from above-mentioned anaerobic and the effusive mud of anaerobism groove and settling tank mud and flow into aerator tank again, thereby make the organism and the nitrogen component oxidation of not removing as yet, and the 5th step of excessive absorption phosphorus; After finishing the 5th step, mud that is generated by aerator tank and the inflow water that flows into from the outside mix and make it the 6th step of recirculation; After finishing the 6th step, make microorganism solid-liquid separation in settling tank, precipitation mud, and make seven step for the treatment of water by the overflow port discharging.
15. handle the method for water, waste water down according to claim 14 is described with biologically, it is characterized in that above-mentioned second step comprises following process: when microorganism concn (MLSS) 4, when 000mg/l is following, use general air bell; When microorganism concn 4, when 000mg/l is above, use micro-filtration membrane and ultrafilter membrane such have a fine porous film.
16. according to claim 14 and 15 described methods with water, waste water under the biologically processing, it is characterized in that, above-mentioned third step comprises following process: before oxidized under the aerobism condition, anaerobic and anaerobism groove are gone in overflow at the organism of the inflow water that flows into aerator tank.
17. according to claim 14 or 15 described methods with water, waste water under the biologically processing, it is characterized in that, above-mentioned third step comprises following process: spray the conveying propulsive force of formed micro bubble by above-mentioned air bell, will flow into water and mud mixed solution and be transported to anaerobic and anaerobism groove.
18. according to claim 14 or 15 described methods with water, waste water under the biologically processing, it is characterized in that, above-mentioned third step comprises following process: when the conveying propulsive force of micro bubble is not enough, can start and stir pump in the water, will flow into water and mud mixed solution and be transported in anaerobic and the anaerobism groove.
19. describedly handle the methods of water, waste water down according to claim 14 or 15, it is characterized in that above-mentioned the 4th step includes following process: make nitrogen oxygen nitrogen be reduced to nitrogen on the top of above-mentioned anaerobic and anaerobism groove and remove with biologically; Form the anaerobism condition in its underpart, make that organism remaining, that flow into water discharges intracellular phosphorus as carbon source for denitrogenating required back.
20. according to claim 14 or 15 described methods with water, waste water under the biologically processing, it is characterized in that, above-mentioned the 4th step includes following process, and mixing guide plate in anaerobic and the anaerobism groove will flow into water and aerator tank mud mixes fully by being installed in zig-zag.
21. according to claim 14 or 15 described methods with water, waste water under the biologically processing, it is characterized in that above-mentioned the 4th step includes following process, to flow into flow as benchmark, the residence time in anaerobic and anaerobism groove is in 1 hour.
22., it is characterized in that above-mentioned the 5th step includes following process: rely on conveying propulsive force to make mud flow into aerator tank again because of air supply produced according to claim 14 or 15 described methods with water, waste water under the biologically processing.
23. according to claim 14 or 15 described methods with water, waste water under the biologically processing, it is characterized in that above-mentioned the 5th step includes following process, the residence time in aerator tank on the hydrology remained on 4～8 hours; The F/M ratio remains on 0.1kg BOD/kg MLSSd.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR9736/98 | 1998-03-20 | ||
| KR1019980009736A KR100273913B1 (en) | 1998-03-20 | 1998-03-20 | Apparatus and method of biological wastewater treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1229768A true CN1229768A (en) | 1999-09-29 |
| CN1096425C CN1096425C (en) | 2002-12-18 |
Family
ID=19535159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99101322A Expired - Lifetime CN1096425C (en) | 1998-03-20 | 1999-01-19 | Apparatus and method for treating sewage and wastewater biologically |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3336410B2 (en) |
| KR (1) | KR100273913B1 (en) |
| CN (1) | CN1096425C (en) |
| MY (1) | MY122110A (en) |
| RU (1) | RU2181344C2 (en) |
Cited By (6)
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| CN100391866C (en) * | 2003-08-22 | 2008-06-04 | Net有限公司 | Wastewater treating apparatus |
| CN102936058A (en) * | 2011-08-15 | 2013-02-20 | 黎明兴技术顾问股份有限公司 | Wastewater treatment method and device with annularly arranged microorganism carriers |
| CN103466795A (en) * | 2013-09-13 | 2013-12-25 | 同济大学 | Method for reducing production of N2O during treatment of domestic sewage |
| CN106145323A (en) * | 2014-12-18 | 2016-11-23 | 韩国建设技术研究院 | Possess lower water, the wastewater treatment equipment of the one-piece type reactive tank of aeration/precipitate |
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- 1998-03-20 KR KR1019980009736A patent/KR100273913B1/en not_active IP Right Cessation
- 1998-11-30 RU RU98121516/12A patent/RU2181344C2/en not_active IP Right Cessation
- 1998-12-01 MY MYPI98005439A patent/MY122110A/en unknown
-
1999
- 1999-01-08 JP JP00261999A patent/JP3336410B2/en not_active Expired - Fee Related
- 1999-01-19 CN CN99101322A patent/CN1096425C/en not_active Expired - Lifetime
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1096425C (en) | 2002-12-18 |
| KR100273913B1 (en) | 2000-12-15 |
| JP3336410B2 (en) | 2002-10-21 |
| JPH11277091A (en) | 1999-10-12 |
| MY122110A (en) | 2006-03-31 |
| KR19990075503A (en) | 1999-10-15 |
| RU2181344C2 (en) | 2002-04-20 |
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