CN1233572C - Apparatus and method for treating wastewater using biolgical filtering medium - Google Patents
Apparatus and method for treating wastewater using biolgical filtering medium Download PDFInfo
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- CN1233572C CN1233572C CNB031284868A CN03128486A CN1233572C CN 1233572 C CN1233572 C CN 1233572C CN B031284868 A CNB031284868 A CN B031284868A CN 03128486 A CN03128486 A CN 03128486A CN 1233572 C CN1233572 C CN 1233572C
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/06—Aerobic processes using submerged filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
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- 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
- C02F3/1278—Provisions for mixing or aeration of the mixed liquor
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2813—Anaerobic digestion processes using anaerobic contact processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
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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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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Provided is an apparatus and a method of treating wastewater using a biofilter, in which an anoxic bioreactor for denitrifying and an aerobic bioreactor for nitrifying are provided in one reaction tank, thereby reducing time of decomposing pollutant and facilities installment area, and the method provides gravity direction of backwashing, thereby drastically increasing backwashing efficiency. The apparatus comprises a reaction tank(13) with a wastewater inlet(10), a treated water inlet(11) and a treated water outlet(12); an anoxic filter(14) for denitrifying and an aerobic filter(15) for nitrifying arranged in the reaction tank(13) with a certain distance therebetween; a first chamber(16) and a second chamber(17) provided under the anoxic filter(14) and the aerobic filter(15), respectively, for preparing denitrification and nitrification, respectively; an air supply hole(18) for supplying air to the filters(14,15) through the first and second chambers(16,17); and a drain(19) installed at the bottom of the reaction tank(13) for gravity backwashing.
Description
Technical field
The present invention relates to a kind of by using biological filter media to handle the devices and methods therefor of waste water.Especially, the present invention relates to a kind of device, this device is included in and becomes horizontal layer biological respinse structure, that be used for anaerobic denitrogenation zone in the reactor and be used for the nitrated biological respinse zone of aerobic, wherein, each conversion zone is full of the filtration medium of being made by globule shape polystyrene foamed plastics; The invention still further relates to a kind of method, this method can obviously reduce required time of decomposing pollutant and the required space of equipment, uniform back scrubbing (backwash) is provided simultaneously, wherein, direction moment of current is transformed into towards gravity direction moves, so that carry out back scrubbing, thereby cleaning and filtering medium, therefore, compare obvious increase backwash efficiency with the compressed-air actuated usual way of use, and its method is used biological filter media, the principle that this has made up the principle of micro particle filtering method and has adhered to growth (attached-growth).
Background technology
It is a kind of technology that is used to handle the floating growing system of waste water that activated sludge is handled, therefore widespread use in the biological treatment of development so far.Processing safety, processing efficiency, processing target of this method etc. have been made great efforts to improve.An example that is produced by these effort is the nitrogen/phosphorus removal method in activated sludge is handled, and it comprises anaerobism groove, anaerobic groove, aerobic groove, internal recycling etc.But, activated sludge is handled some shortcomings, and it is nitrated that it needs the relatively long time to carry out at low temperatures, therefore needs relatively large space to handle.Also have, it needs very large-sized equipment to prevent noise and undesirable smell, and is therefore also uneconomical.Recently, activated sludge is handled and has been adopted the method for using biofiltration, so that address the above problem.It is to come the fixed bed of decomposing pollutant to adhere to growth process by sticking to the lip-deep microbial film of filtration medium that above-mentioned biofiltration is handled, and it supplies with the filtering layer with predetermined diameter size with waste water from the bottom along updrift side.In addition, because by the biological decomposition of the microorganism of adhesions/growth on filtration medium and the filtration capacity of filtering layer self, this method can be carried out BOD, floating material and nitrogen processing.Therefore, above-mentioned technology is to save the spatial treatment process, and the reactor of handling by single activated sludge provides ventilation (aeration) groove, settling bath and filtering function.This method is combination work principle of filter and the technology that adheres to the biological respinse handling principle of growing system.The formant that constitutes this technology has: filter-carrier layer, microbial film can be fixed on this carrier layer; Breather is because air supply; Nozzle is owing to introduce waste water and make the waste water back scrubbing; Be used for the technology of back scrubbing etc.In the filter method that utilizes microorganism like this, when floating material in the working process accumulates, need to clean this filtering layer on filtering layer, and will discharge by the microorganism that pollutent decompose generation.Backwash operation is carried out 20-30 minute/circulation usually, and the back scrubbing draining that produces in backwash process is handled in system after transmitting separately.
Fig. 1 has represented to utilize biological filter media to remove the schema of the device of organic materials in the waste water and nitrogen.This device comprises two-layer bio-reactor, wherein, anaerobic (denitrogenation) bio-reactor 100 and aerobic (nitrated) bio-reactor 110 that are full of single filtration medium are alternately arranged, and it comprises returning by the inside of waste water supplies with, and utilizes the organic materials that comprises in the waste water of introducing to remove the step of denitrification from nitric nitrogen.Unaccounted parts 120 expression filtration mediums.
When works better, introducing the bottom of anaerobic bio-reactor 100 through having removed part solid waste water behind the settling tank, transmit by a plurality of nozzle (not shown) upstream direction then, and treated water is introduced aerobic bioreactor reactor 110, and the air of supplying with by air feeder transmits to filtering layer by the form upstream direction of breather (not shown) with small bubbles.Carry out the decomposition of organic materials and ammonia-state nitrogen nitrated through the waste water of the inside of filtering layer by the aerobic microorganism that on filtering layer, grows with air along upstream direction.Especially, the decomposition of organic materials is effectively carried out in the bottom of filtering layer, and carry out on the nitrated top at filtering layer of nitrogen simultaneously, because when organic material passed through the top of filtering layer, the concentration of organic materials reduced.
After the scheduled time, filtering layer is polluted by the microorganism scum silica frost of a large amount of solid floating materials or hypertrophy, and therefore needs a backwash step in works better.For example, after making filtering layer expansion (expand) by the back scrubbing air that utilizes the back scrubbing air feeder to supply with from reactor bottom, the pollutent of catching in filtering layer is removed by backwash water is supplied with to the bottom of reactor.In case finish back scrubbing, restart the normal running of wastewater treatment, this normal running and back scrubbing repeat with this sequence alternate.
But, the aforementioned common wastewater treatment equipment of the bio-reactor with filtering layer that comprises has following shortcoming:
1) although owing to only need to have reduced the required space of erecting equipment greatly owing to 2 groups of biofilters of denitrogenation and nitration treatment, it is also very limited that spatial reduces;
2) filtering layer is arranged and be used for layer supporting filter layer, that be full of gravel in device, therefore be difficult in whole filtration zone, evenly supply with oxygen, thereby blocked territory, a lateral areas; And
3) need control air under the high pressure at air from the backwash method of supplying with backwash water after reactor bottom is introduced again,, when one side obstruction, also will appear at the back scrubbing of a side, therefore be difficult to carry out even back scrubbing so that filtering layer is carried out even back scrubbing.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of waste treatment plant, this device is included in and becomes horizontal layer biological respinse structure, that be used for anaerobic denitrogenation zone in the reactor and be used for the nitrated biological respinse zone of aerobic.
Another object of the present invention provides a kind of waste treatment method of utilizing above-mentioned waste treatment plant, thereby obviously reduces required time of decomposing pollutant and the required space of erecting equipment, carries out uniform back scrubbing simultaneously.
Another object of the present invention provides a kind of waste treatment method that comprises back scrubbing, and wherein, direction moment of current is transformed into towards the gravity direction motion, so that the cleaning and filtering medium; A kind of device that adopts this method also is provided, and this device can carry out even back scrubbing, has increased backwash efficiency greatly thereby compare with usual way.
Apparatus of the present invention of utilizing biological filter media to handle waste water comprise: reactor, and this reactor comprises: in the waste water import of bottom and the import of treated water; And the outlet of treated water, the outlet of this treated water is positioned at top, is used to cause that waste water is upstream mobile; Be used for nitrated aerobic filter layer and the anaerobic filtering layer that is used for denitrogenation, this aerobic filter layer and anaerobic filtering layer distribute in described reactor at regular intervals; Be used for first chamber of denitrogenation and be used for the second nitrated chamber, this first chamber and second chamber are installed in respectively in the space of bottom of described anaerobic filtering layer and described aerobic filter layer; Air intlet is used for respectively by described first chamber and described second chamber and air is supplied with each filtering layer; And water exhaust system, in order to carry out back scrubbing along gravity direction, this water exhaust system is installed in the bottom of described reactor; It is characterized in that, described device is provided with the circulation line between the import of the outlet that is arranged in described treated water and described treated water, like this, finish the described treated water of a nitrated part and can be re-circulated in described first chamber, so that carry out denitrogenation; Described anaerobic filtering layer and described aerobic filter layer comprise polystyrene foamed plastics, and this polystyrene foamed plastics is packed into and had in the housing of grid structure.
Another object of the present invention provides a kind of device that utilizes biological filter media to handle waste water, and wherein, above-mentioned reactor also comprises the storage tank that is used for washing water, and this storage tank is installed in the place, top of aerobic filter layer.
Another object of the present invention provides a kind of device that utilizes biological filter media to handle waste water, wherein, this device provides the circulation line between the import of the outlet that is arranged in treated water and treated water, like this, finish nitrated a part of treated water and can be re-circulated in first chamber, so that carry out denitrogenation.
Another object of the present invention provides a kind of device that utilizes biological filter media to handle waste water, and wherein, this anaerobic filtering layer and aerobic filter layer comprise polystyrene foamed plastics, and this polystyrene foamed plastics is packed into and had in the housing of grid structure.
Another object of the present invention provides a kind of device that utilizes biological filter media to handle waste water, wherein, compares with the filtration medium in being loaded on the aerobic filter layer, and this anaerobic filtering layer is equipped with more high-density and the more filtration medium of small-diameter sized.
Another object of the present invention provides a kind of method of utilizing biological filter media to handle waste water, and this method may further comprise the steps: waste water is introduced reactor, and make it pass through filtering layer along updrift side; The alternatively distributed anaerobic layer that is used for denitrogenation carries out denitrogenation and nitrated in proper order with being used for nitrated aerobic layer in reactor by utilizing, and wherein, described anaerobic layer is positioned at the below of described aerobic layer; Finishing when nitrated, by being circulated again, a part of treated water carries out denitrogenation, discharge remaining treated water simultaneously; And after the work scheduled time, the filtering layer in the reactor is carried out back scrubbing and handle, and repeat above-mentioned processing by introducing waste water.
Another object of the present invention provides a kind of method of utilizing biological filter media to handle waste water, wherein, and all different with size by using anaerobic layer and aerobic layer to carry out the density of denitrogenation used filtration medium when nitrated.
Another object of the present invention provides a kind of method of utilizing biological filter media to handle waste water, wherein, be used for nitrated aerobic filter layer filtration medium and compare with packing into, more high-density and more small-diameter sized are arranged at the filtration medium of the anaerobic filtering layer that is used for denitrogenation.
Another object of the present invention provides a kind of method of utilizing biological filter media to handle waste water, and wherein, being respectively applied for denitrogenation and nitrated filtration medium in filtering layer is globule shape polystyrene foamed plastics.
Another object of the present invention provides a kind of method of utilizing biological filter media to handle waste water, wherein, backwash method in backwash step is characterised in that: the whole water yield moment in reactor falls along gravity direction, and these whole water yields are included in the treated water in the storage tank of treated water.
Another object of the present invention provides a kind of method of utilizing biological filter media to handle waste water, and wherein, this backwash step also comprises the step of introducing air.
Description of drawings
By detailed description below in conjunction with accompanying drawing, can know above and other objects of the present invention and advantage, in the accompanying drawing:
Fig. 1 is that expression utilizes common biostrome to handle the schema of the usual way of waste water; And
Fig. 2 is that expression utilizes Biomedia of the present invention to handle the schematic representation of apparatus of waste water.
Embodiment
To describe the present invention in detail below.
Fig. 2 has represented to utilize Biomedia of the present invention to handle the schematic representation of apparatus of waste water.As shown in Figure 2, the device that utilizes Biomedia of the present invention to handle waste water comprises: reactor 13; Two filtering layers 14 and 15, these two filtering layers 14 and 15 are arranged in the reactor with appropriate interval; And water exhaust system 19, be used for the back scrubbing of filtration medium.
Reactor 13 is by discharging treated water in outlet 12 top, that be used for treated water, and by providing waste water in import 10 bottom, that be used for waste water, the side in this bottom provides the import 11 of treated water simultaneously.
Particularly, the invention provides circulation line 21, this circulation line 21 is linking to each other with treated water import 11 behind outlet 12 bifurcateds of the treated water of reactor 13, is used for required reaction after the part of the treated water of discharging from reactor 13 reclaims.
The inside of reactor 13 is divided into each conversion zone by two filtering layers 14 and 15, and the storage tanks 20 that is used for treated water is arranged in top, so that treated water is provided when back scrubbing.
Above-mentioned each conversion zone is called first chamber 16 and second chamber 17, so that store the waste water of predetermined amount, waste water is these chambers of process before being sent to each conversion zone.
Filtering layer 14 and 15 is divided into anaerobic filtering layer 14 and the superposed aerobic filter layer 15 that is positioned at the bottom, and wherein, each filtering layer forms the housing 22 with network structure, a large amount of polystyrene foamed plastics of packing in this housing 22.
Housing 22 can be formed by the grid with pre-sizing, and is installed on the inwall of reactor 13, simultaneously by bearing bracket, and can change in this reactor 13 when needing thinking.
The import 18 of introducing air can link to each other with 17 with above-mentioned each chamber 16.Here, the air of introducing in the chamber 16 is used for making when back scrubbing filtering layer to expand, and the air of introducing in the chamber 17 is used for making waste water in the filtering layer uniformly distributing.Just, when waste water can not be evenly distributed in the filtering layer, the space in the filtering layer can not utilize fully, therefore reduced processing efficiency.And filtering layer is transformed into anaerobic state with part, thereby makes the microbiological degradation of hypertrophy, and this will cause the obstruction of filtration medium or waste water stream is introduced a side.
As filtration medium, the present invention adopts polystyrene foamed plastics, and the density of this polystyrene foamed plastics changes according to the feature of each conversion zone.Therefore, the filtration medium that adopts in the lower reaction zone territory that is used for denitrogenation has higher relatively density and relative less diameter dimension, simultaneously relatively low density and relatively large diameter dimension are arranged being used for the filtration medium that nitrated top conversion zone adopts, thereby satisfy the processing requirements in each conversion zone.
As mentioned above, to be divided into two parts are obvious advantages of the present invention to conversion zone.
The above-mentioned main purpose that is used for the conversion zone of denitrogenation is to separate the floating material and the too much mud of waste water, and subsequently they is removed, and aspect this, less filtration medium is more favourable relatively.
The above-mentioned main purpose that is used for nitrated conversion zone is to introduce and supply oxygen, and the filtration medium that is used for this purpose should have uneven surface and effective hydrodynamic feature, but without any known dead point.
Big floating material filters at the above-mentioned conversion zone that is used for denitrogenation, therefore, can keep best nitrated precondition well.
The waste water of handling in having the previous reaction device of two conversion zones transmits along updrift side from the bottom.
Polystyrene foamed plastics is as filtration medium.It is not only as strainer, and as the absorbing material of microorganism.
Conversion zone for example anaerobic filtering layer 14 is to remove the position that floating material carries out denitrogenation simultaneously, and another conversion zone for example aerobic filter layer 15 ventilate so that as carrying out nitrated position.
Separation between above-mentioned two conversion zones makes can be at the filtration medium of conversion zone employing in top than bottom conversion zone less dense.When not having suitable the separation, filtration medium will mix owing to tilting force causes the filtration medium of different densities, thereby prevent further processing.
The part of treated water is sent to the position that keeps original waste water, so that regulate the C/N ratio, back scrubbing is along carrying out in the opposite direction with the waste water sender.
To introduce method of wastewater treatment of the present invention in more detail below.
In the present invention, the waste water of introducing in the reactor that comprises denitrification reaction zone and nitration reaction zone transmits to the top from the bottom along updrift side.
The conversion zone that is used for denitrogenation be full of have higher density than the pellet shapes filtration medium, be full of and have more low-density bigger spherical filtration medium and be used for nitrated conversion zone.
Waste water is introduced the bottom conversion zone by first chamber, and in this bottom conversion zone, suspended solids and COD/BOD reduce, and nitric nitrogen is reduced into nitrogen molecule by denitrogenation processing simultaneously.Then, the waste water of Chu Liing is sent to the top conversion zone like this, in this top conversion zone, is formed with oxygen condition by introducing air, and ammonia-state nitrogen is oxidized to nitric nitrogen simultaneously.
Phosphorus of the present invention just plays the subordinate biological action in processing is flowed.
Back scrubbing is carried out along gravity direction, does not need to be used for the complementary pump of washing water, because back scrubbing is carried out under different time or pressure.Therefore, the introducing of waste water and the circulation of treated water all stop, and the valve of water exhaust system is opened.The amount of backwash water depends on the pollution level of filtration medium, and cleans strongly or clean with higher frequency with high flow.
The speed of back scrubbing can choose at random and control by utilizing the throttling valve armature, thereby can fully help the cleaning of the filtration medium in above-mentioned two conversion zones, and fully removes the microorganism of floating solid and growth from system.
In backwash process, air is introduced can be as the addition thereto under the high capacity.
Below will be to being used to handle the said apparatus of waste water and the working process of its treatment process further specifies.
When works better,, transmit to upper area then through initial precipitation pond or removed part solid waste water and introduced first chamber by the waste water import in the reactor.Wherein, evenly supply with whole filtering layer with the form of small bubbles, make the top condition that is present in the microorganism growth in the filtering layer thereby provide by the air that air intlet is introduced.
As mentioned above, because the floating solid in the waste water filters, therefore in the waste water that moves along updrift side denitrogenation takes place, and by aerobic microorganism, the decomposition of the nitrated and organic materials of ammonium nitrate takes place also through anaerobic filtering layer and aerobic filter layer time.Just, the activity that produces organic materials in the lower region of filtering layer is decomposed, and when through upper area, because the concentration of organic materials reduces, therefore will take place nitrated.
The treated water of having removed solid, organic materials and ammonium nitrate when waste water process filtering layer discharges by the outlet in the upper area, part treated water circulates, so that the waste water with new introducing carries out denitrogenation, and be sent in first chamber of reactor.
After the scheduled time, filtering layer will be polluted by the microorganism scum silica frost of floating solid or hypertrophy, and will clean by back scrubbing in works better.
The back scrubbing of carrying out in the present invention is characterised in that the whole instant waters in reactor move along gravity direction.Therefore, the parts in water exhaust system are opened, and the introducing of waste water and the circulation of treated water simultaneously all temporarily stops, and the whole instant waters in reactor move in downward direction.
Utilize the load of water capacity self along the above-mentioned back scrubbing of gravity direction.When becoming, whole filtering layer expands and when applying enough pressure and stir, the pollutent of filtering layer inside can discharge from filtering layer fully, and can carry out uniform back scrubbing to the whole zone of filtering layer.Just, when in the reactor, comprise that the whole instant waters in the filtering layer move along gravity direction, therefore filtering layer totally stirs in the vortex mode, can carry out even and sufficient back scrubbing.
In order to increase the back scrubbing effect, preferably also supply with the back scrubbing air by air intlet.After finishing back scrubbing, restart works better, so that handle waste water, and works better and back scrubbing job order alternately repeat.
As mentioned above, the invention provides a kind of device that is used to handle waste water, this device is included in anaerobic (denitrogenation) bio-reactor and aerobic (nitrated) bio-reactor in the single reactor, the present invention also provides a kind of method of utilizing this device to handle waste water, thereby having significantly reduced the required time of decomposing pollutant has reduced the required minimum elementary zone of advancing equipment.And, the invention provides backwash method, this method can make whole instant waters move along gravity direction, thereby can carry out even back scrubbing, and with utilize compressed-air actuated usual way to compare also to have improved backwash efficiency.
Claims (8)
1. device that utilizes biological filter media to handle waste water comprises:
Reactor, this reactor comprises: in the waste water import of bottom and the import of treated water; And the outlet of treated water, the outlet of this treated water is positioned at top, is used to cause that waste water is upstream mobile;
Be used for nitrated aerobic filter layer and the anaerobic filtering layer that is used for denitrogenation, this aerobic filter layer and anaerobic filtering layer distribute in described reactor at regular intervals, and described aerobic filter layer is positioned at the top of described anaerobic filtering layer;
Be used for first chamber of denitrogenation and be used for the second nitrated chamber, this first chamber and second chamber are installed in respectively in the space of bottom of described anaerobic filtering layer and described aerobic filter layer;
Air intlet is used for respectively by described first chamber and described second chamber and air is supplied with each filtering layer; And
Water exhaust system, in order to carry out back scrubbing along gravity direction, this water exhaust system is installed in the bottom of described reactor; It is characterized in that,
Described device is provided with the circulation line between the import of the outlet that is arranged in described treated water and described treated water, like this, finishes the described treated water of a nitrated part and can be re-circulated in described first chamber, so that carry out denitrogenation;
Described anaerobic filtering layer and described aerobic filter layer comprise polystyrene foamed plastics, and this polystyrene foamed plastics is packed into and had in the housing of grid structure.
2. the device that utilizes biological filter media to handle waste water according to claim 1, wherein: described reactor also comprises the storage tank that is used for washing water, this storage tank is installed in the place, top of described aerobic filter layer.
3. the device that utilizes biological filter media to handle waste water according to claim 1 and 2, wherein: compare with the filtration medium in being loaded on described aerobic filter layer, described anaerobic filtering layer is equipped with more high-density and the more filtration medium of small-diameter sized.
4. method of utilizing biological filter media to handle waste water may further comprise the steps:
Waste water is introduced reactor, and make it pass through filtering layer along updrift side;
The alternatively distributed anaerobic layer that is used for denitrogenation carries out denitrogenation and nitrated in proper order with being used for nitrated aerobic layer in reactor by utilizing, and wherein, described anaerobic layer is positioned at the below of described aerobic layer;
Finishing when nitrated, by being circulated again, a part of treated water carries out denitrogenation, discharge remaining treated water simultaneously; And
After the work scheduled time, the filtering layer in the reactor is carried out back scrubbing and handle, and repeat above-mentioned processing by introducing waste water.
5. the method for utilizing biological filter media to handle waste water according to claim 4, wherein: be used for nitrated described aerobic filter layer filtration medium and compare with packing into, more high-density and more small-diameter sized are arranged at the filtration medium of the described anaerobic filtering layer that is used for denitrogenation.
6. according to claim 4 or the 5 described methods of utilizing biological filter media to handle waste water, wherein: in described filtering layer, be respectively applied for described denitrogenation and described nitrated described filtration medium is a globule shape polystyrene foamed plastics.
7. the method for utilizing biological filter media to handle waste water according to claim 4, wherein: the backwash method in described backwash step is characterised in that, parts in water exhaust system are opened, the introducing of waste water and the circulation of treated water simultaneously all temporarily stops, whole water yield moment in reactor falls along gravity direction, and these whole water yields are included in the treated water in the storage tank of treated water.
8. according to claim 4 or the 5 described methods of utilizing biological filter media to handle waste water, wherein: described backwash step also comprises the step of introducing air.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR81390/2002 | 2002-12-18 | ||
| KR10-2002-0081390A KR100512686B1 (en) | 2002-12-18 | 2002-12-18 | Wastewater treatment apparatus and methods using biological filter media |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1508082A CN1508082A (en) | 2004-06-30 |
| CN1233572C true CN1233572C (en) | 2005-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031284868A Expired - Fee Related CN1233572C (en) | 2002-12-18 | 2003-04-28 | Apparatus and method for treating wastewater using biolgical filtering medium |
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| KR (1) | KR100512686B1 (en) |
| CN (1) | CN1233572C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101395084B1 (en) * | 2012-02-22 | 2014-05-16 | 주식회사 지승개발 | Biological filtering appratus for removing simultaneously the nitrogen and phosphorus compounds |
| CN204661494U (en) * | 2015-03-30 | 2015-09-23 | 姜一民 | One way of life waste disposal plant |
| KR101714446B1 (en) * | 2016-02-02 | 2017-03-22 | 강영현 | Advanced sewage wastewater treatment system combined with biological aerated filter and ultra rapid sedimentation |
| KR101757333B1 (en) * | 2016-07-29 | 2017-07-12 | (주) 영동엔지니어링 | Apparatus of advanced wastewater treatmentby WWAY |
-
2002
- 2002-12-18 KR KR10-2002-0081390A patent/KR100512686B1/en not_active IP Right Cessation
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2003
- 2003-04-28 CN CNB031284868A patent/CN1233572C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1508082A (en) | 2004-06-30 |
| KR20040054359A (en) | 2004-06-25 |
| KR100512686B1 (en) | 2005-09-07 |
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