CN103896452A - Equipment and method for removing nitrogen out of domestic wastewater - Google Patents
Equipment and method for removing nitrogen out of domestic wastewater Download PDFInfo
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- CN103896452A CN103896452A CN201410087574.7A CN201410087574A CN103896452A CN 103896452 A CN103896452 A CN 103896452A CN 201410087574 A CN201410087574 A CN 201410087574A CN 103896452 A CN103896452 A CN 103896452A
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- anaerobic
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 title abstract description 9
- 239000010840 domestic wastewater Substances 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 56
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 36
- 230000000249 desinfective Effects 0.000 claims abstract description 33
- 238000010992 reflux Methods 0.000 claims abstract description 23
- 238000005273 aeration Methods 0.000 claims abstract description 20
- 239000000969 carrier Substances 0.000 claims abstract description 16
- 230000001954 sterilising Effects 0.000 claims abstract description 8
- 239000010865 sewage Substances 0.000 claims description 125
- 238000005276 aerator Methods 0.000 claims description 73
- 238000001914 filtration Methods 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 241000894006 Bacteria Species 0.000 claims description 21
- 244000005700 microbiome Species 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 10
- 239000002965 rope Substances 0.000 claims description 8
- -1 nitrate nitrogen Chemical compound 0.000 claims description 7
- 238000006396 nitration reaction Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 238000002513 implantation Methods 0.000 claims description 5
- 238000005352 clarification Methods 0.000 claims description 4
- 230000000050 nutritive Effects 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 241000005139 Lycium andersonii Species 0.000 claims description 2
- 241000276438 Gadus morhua Species 0.000 claims 2
- 235000019516 cod Nutrition 0.000 claims 2
- 238000001556 precipitation Methods 0.000 abstract description 5
- 239000002028 Biomass Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000000593 degrading Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- CVTZKFWZDBJAHE-UHFFFAOYSA-N [N].N Chemical compound [N].N CVTZKFWZDBJAHE-UHFFFAOYSA-N 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 230000000813 microbial Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Abstract
The invention provides equipment and method for removing nitrogen out of domestic wastewater. An outer tank body is arranged on the equipment, wherein a first anaerobic tank, a second anaerobic tank, an aeration tank, a precipitation tank and a sterilization tank are sequentially arranged inside the outer tank body; an inflow pipe extending into the first anaerobic tank is arranged on a lateral wall surface of the outer tank body; contact filter materials are arranged inside the first anaerobic tank and the second anaerobic tank; a first duct extending into the second anaerobic tank is arranged inside the first anaerobic tank; a second duct extending into the aeration tank is arranged inside the second anaerobic tank; an aeration system and a reflux pump are arranged at the bottom of the aeration tank; a reflux pipe extending into the first anaerobic tank is arranged on the reflux pump; a biomass carrier is placed into the aeration tank; a communicated channel is arranged at the bottom of the wall surface between the aeration tank and the precipitation tank; a third duct extending to the sterilization tank is arranged inside the precipitation tank; a disinfectant is injected into the sterilization tank; and a release pipe is arranged on the wall surface of sterilization tank on the outer tank body.
Description
Technical field
The present invention relates to sewage treatment area, be specifically related to the denitrogenation processing Apparatus and method for of one way of life sewage.
Background technology
The sanitary sewage discharging in general life, because containing a large amount of organic pollutants, easily cause the waters such as rivers and creeks, lake to be polluted, make to contain in discharge water the organic nutrient substances such as higher carbon, nitrogen, phosphorus, easily reduce the dissolved oxygen in water, affect the safety and hygiene at water source, also can destroy original ecotope in water; And current sanitary sewage release water quality standard except water quality protection district, water source, do not carry out specification for the discharge of nitrogen, phosphorus, but, it is 3.0mg/l that agricultural commission of Executive Yuan gives specification total nitrogen (T-N) upper limit of concentration value on November 7th, 92 according to " farmland water conservancy meeting irrigation and drainage management main points " Article 20 bulletin " irrigation water water quality standard ", therefore; The domestic sewage treatment device of current precast type, utilizes the method for solid-liquid separation and aeration only can meet general emission standard at present, and the method for there is no provides the function that effectively reaches denitrogenation.
Domestic sewage treatment device and the method for general precast type, refer to Fig. 1, shown in 2, its domestic sewage treatment device 1 is mainly provided with an outer cell body 10, in this outer cell body 10, be provided with one first anaerobic air tank 11, one second anaerobic air tank 12, one aerator tank 13, one settling bath 14 and a disinfection trough 15, the wall of outer cell body 10 is provided with influent stream pipe 100 and ventpipe 101 extends in the first anaerobic air tank 11, between the first anaerobic air tank 11 and the second anaerobic air tank 12, be provided with one first thrust-augmenting nozzle 110, between the second anaerobic air tank 12 and aerator tank 13, be provided with one second thrust-augmenting nozzle 120, separately be provided with gas blower (not shown) and produce aeration in the interior air-supply of aerator tank 13, between aerator tank 13 and settling bath 14, be provided with overflow weir 140, in settling bath 14, be provided with return line 16, one end of return line 16 is provided with reflux pump 160 mud guiding is back in the first anaerobic air tank 11, disinfection trough 15 is located in settling bath 14, the outside of disinfection trough 15 is provided with an Outlet Pipe 17, so, sanitary sewage is entered in the first anaerobic air tank 11 by influent stream pipe 100, carry out preliminary treatment, by the first thrust-augmenting nozzle 110, the sewage in the first anaerobic air tank 11 is sent in the second anaerobic air tank 12 again, carry out secondary treatment, by the second thrust-augmenting nozzle 120, the sewage in the second anaerobic air tank 12 is sent in aerator tank 13 again, carry out contact aeration, sewage after contact aeration is flowed in settling bath 14 by overflow weir 140 again, mud in settling bath 14 is back to mud guiding in the first anaerobic air tank 11 by return line 16, after precipitation and through disinfection trough 15 sewage, can be released by Outlet Pipe 17, mud in the first anaerobic air tank 11 must regularly be cleared, so, be traditional domestic sewage treatment device and method.
The domestic sewage treatment device of existing precast type and method have following shortcoming:
1. existing domestic sewage treatment device, effective denitrification functions cannot be provided, sewage is easily by surperficial overflow again, sewage overflow unprocessed, this treatment facility loses processing effect, and the nitrogen content concentration in sanitary sewage cannot be processed to the standard value of discharge, therefore cannot or overlap to agricultural drainage channel sewage discharge after treatment.
2. the treatment facility of existing sanitary sewage, in its anaerobic air tank, there is no contact filtering material is set is bio-carrier, the residence time of sewage must be longer, must useful volume also need larger.
3. the treatment facility of existing sanitary sewage, because of in anaerobic air tank without the factor of contact filtering material is set, property microorganism (denitration bacterium on one's own account cannot be provided ... Deng) growing environment and adhere to space, this is also the main cause that causes denitration effect not good.
4. the treatment facility of existing sanitary sewage, after sanitary sewage disposal, be disposed to the design of Outlet Pipe, easily there is the phenomenon of short stream, because influent stream sewage is not easy to effectively stop in each groove, and directly flowed out by water side, cause the volume of each treatment trough to make full use of, one of the factor that also cannot bring into play for efficiency.
5. existing domestic sewage treatment device, its aerator tank speed of reaction is slow, must have the tediously long time to precipitate, with separated sludge.
6. existing domestic sewage treatment device, its aerator tank does not provide the suitable growing environment of nitrifier and adheres to space.
7. existing domestic sewage treatment device, capacity (air quantity) deficiency that its gas blower arranges, cannot provide aerator tank and reflux pump Air Quantity Required simultaneously, and make dissolved oxygen deficiency in aerator tank, and biological decomposition organism and nitrification function are limited.
8. the treatment facility of existing sanitary sewage, owing to not considering effective denitrification functions, therefore, on original design logic, without the required effective quantity of reflux of denitrogenation.
9. existing domestic sewage treatment device, processes water water quality unstable, and due to the totalling of the factors such as short stream, blower air quantity deficiency, quantity of reflux are short of, making to process water water quality cannot be guaranteed.
Summary of the invention
In view of this, the existing disappearance for the treatment of facility that the present invention is directed to existing sanitary sewage is improved, is designed, its main purpose be to provide a kind of can be to the treatment facility of the effective denitrogenation of sanitary sewage and method.
The denitrogenation processing equipment of sanitary sewage of the present invention, this equipment is provided with outer cell body, in this outer cell body, be sequentially provided with the first anaerobic air tank, the second anaerobic air tank, aerator tank, settling bath and disinfection trough, wherein a side wall surface of this outer cell body is provided with influent stream pipe and extends in this first anaerobic air tank, in this first anaerobic air tank, be provided with contact filtering material, in this first anaerobic air tank, be injected with biological assistant A, in this first anaerobic air tank, be provided with the first thrust-augmenting nozzle, the bottom land of this first anaerobic air tank is located in one end of this first thrust-augmenting nozzle, the other end of this first thrust-augmenting nozzle extends in this second anaerobic air tank, in this second anaerobic air tank, be also provided with contact filtering material, in this second anaerobic air tank, be provided with the second thrust-augmenting nozzle, the bottom land of this second anaerobic air tank is located in one end of this second thrust-augmenting nozzle, the other end of this second thrust-augmenting nozzle extends in this aerator tank, the bottom land of this aerator tank is provided with aerating system, this aerating system is connected to a gas blower, this gas blower air-supply is carried out aeration to this aerating system, the bottom land of this aerator tank is separately provided with a reflux pump, on this reflux pump, be connected with a return line, this return line extends in this first anaerobic air tank, in this aerator tank, be placed with biological carrier, in this aerator tank, be injected with biological assistant B, wall bottom between this aerator tank and this settling bath is provided with communication channel, the bottom land of this settling bath is provided with a swash plate, in this settling bath, be provided with the 3rd thrust-augmenting nozzle, the cell body top of this settling bath is located in one end of the 3rd thrust-augmenting nozzle, the other end system of the 3rd thrust-augmenting nozzle extends in this disinfection trough, in this disinfection trough, be injected with disinfectant, the wall that this water jacket body is positioned at this disinfection trough is provided with Outlet Pipe.
The denitrifying method of sanitary sewage of the present invention, its method steps is as follows:
(1). sanitary sewage is entered in the first anaerobic air tank by influent stream pipe influent stream, and add biological assistant A in this first anaerobic air tank, build the living environment of efficient bacterium the best, promote denitration reaction, sanitary sewage from top to bottom passes uniformly contact filtering material in the cell body of this first anaerobic air tank, can increase the contact area of microorganism and sewage by the setting of this contact filtering material, can stay in for a long time in this first anaerobic air tank, sanitary sewage is carried out to preliminary treatment, sewage can effectively be contacted with this contact filtering material, promote to react completely.
(2). the sewage after this first anaerobic air tank preliminary treatment, be directed in the second anaerobic air tank by the first aqueduct of the bottom land of this first anaerobic air tank again, sewage from top to bottom evenly passes the contact filtering material in this second anaerobic air tank again in this second anaerobic air tank, can again increase the contact area of microorganism and sewage by the setting of this contact filtering material, and provide the implantation of denitrifier and purification of water quality microorganism, can stay in for a long time in this second anaerobic air tank, promote denitrification reaction, and after the reacted sewage of this first anaerobic air tank effectively contacts with this contact filtering material in this second anaerobic air tank, make denitration bacterium participate in reaction and then complete denitrogenation program.
(3). the sewage after this second anaerobic air tank denitrogenation processing, be directed in aerator tank by the second aqueduct of the bottom land of this second anaerobic air tank again, and in this aerator tank, add biological assistant B, build the living environment of efficient bacterium the best, promote denitration reaction, by gas blower, air is squeezed in the aerating system in this aerator tank, make air by this aerating system aeration in the sewage of this aerator tank, and the biological carrier that is placed in this aerator tank can produce disturbance along with the circulation of water aeration, make to carry out aerobic decomposition reaction in microorganism and this aerator tank, utilize biological treatment function and the filtering function of this biology carrier, promote COD degraded and nitration reaction.
(4). by the reflux pump in this aerator tank, part mud after aerobic reaction and sewage in the bottom land of this aerator tank are taken out and drawn and be directed in this first anaerobic air tank by return line, the nitrate nitrogen of recirculation water in this first anaerobic air tank is provided, provide carbon source by former water COD, add the nitrate nitrogen of recirculation water, make denitration bacterium participate in reaction and then complete denitrogenation program.
(5). entered in settling bath by communication channel via the sewage after the aerobic reaction of this aerator tank, sewage is via this settling bath clarification, make solid settlement and be back to the bottom land of this aerator tank by the swash plate guiding of the bottom land of this settling bath by communication channel, the mud of the bottom land of this aerator tank is directed in this first anaerobic air tank by this return line.
(6). can be directed in a disinfection trough by one the 3rd aqueduct via the sewage after this settling bath clarification, in this disinfection trough, inject disinfectant, sewage is carried out disinfection, the sewage after sterilization is released or recycling by Outlet Pipe.
The denitrogenation processing Apparatus and method for of sanitary sewage of the present invention, wherein, the contact filtering material in this first anaerobic air tank and this second anaerobic air tank is spherical porous property filter material or rope form filter material.
The denitrogenation processing Apparatus and method for of sanitary sewage of the present invention, wherein, this biological assistant A is ferment or nutritive salt.
The denitrogenation processing Apparatus and method for of sanitary sewage of the present invention, wherein, this biological assistant B is nitrifier.
The denitrogenation processing Apparatus and method for of sanitary sewage of the present invention, its advantage exists: utilize anaerobism, aerobic and reflux mode, reach denitrification functions in sanitary sewage, and the total nitrogen (T-N) of effectively degrading, biochemical oxygen demand (BOD) (BOD) and suspended solids (SS).
Brief description of the drawings
Fig. 1 is the schematic diagram of the treatment facility of existing sanitary sewage;
Fig. 2 is the schema of the treatment process of existing sanitary sewage;
Fig. 3 is the schematic diagram of the denitrogenation processing equipment of sanitary sewage of the present invention;
Fig. 4 is the schema of the denitrifying method of sanitary sewage of the present invention.
Description of reference numerals: 1-domestic sewage treatment device; The outer cell body of 10-; 100-influent stream pipe; 101-ventpipe; 11-the first anaerobic air tank; 110-the first thrust-augmenting nozzle; 12-the second anaerobic air tank; 120-the second thrust-augmenting nozzle; 13-aerator tank; 14-settling bath; 140-overflow weir; 15-disinfection trough; 16-return line; 160-reflux pump; 17-Outlet Pipe; The outer cell body of 2-; 20-influent stream pipe; 21-the first anaerobic air tank; 210-contact filtering material; 211-biological assistant A; 212-the first thrust-augmenting nozzle; 22-the second anaerobic air tank 220-contact filtering material; 221-the second thrust-augmenting nozzle; 23-aerator tank; 230-aerating system; 231-gas blower; 232-reflux pump; 233-return line; The biological carrier of 234-; 235-biological assistant B; 236-communication channel; 24-settling bath; 240-swash plate; 241-the 3rd thrust-augmenting nozzle; 25-disinfection trough; 250-disinfectant; 26-Outlet Pipe.
Embodiment
Relevant the present invention reaches above-mentioned application target and effect, and the technique means adopting is hereby enumerated better feasible embodiment, and coordinate graphic shown in, details are as follows:
The present invention utilizes traditional biologic treating technique, according to microbial growth mechanism and each other existence characteristic, general sanitary sewage is imported, first carry out one section anaerobic treatment, add after the anaerobic treatment of the preceding paragraph, give again pending water one aerobic treatment program, because of sanitary sewage different from commonly industrial wastewater, sanitary sewage concentration is lower and the generation water yield is unstable, cannot whipping appts be set detesting in (holding concurrently) air drain as traditional denitrogenation mode, so how to allow the denitrifier of property on one's own account grow, can fully mix with former water again that to contact be an important problem, the present invention is exactly for this crux, design the denitrogenation environment mixing completely.
Domestic sewage denitrifying treatment facility of the present invention, refer to shown in Fig. 3, this equipment is mainly provided with outer cell body 2, in outer cell body 2, be sequentially provided with one first anaerobic air tank 21, one second anaerobic air tank 22, one aerator tank 23, one settling bath 24 and a disinfection trough 25, the side wall surface that wherein outer cell body 2 is positioned at the first anaerobic air tank 21 is provided with an influent stream pipe 20, influent stream pipe 20 extends in the first anaerobic air tank 21, in the first anaerobic air tank 21, be provided with contact filtering material 210, contact filtering material 210 can be spherical porous property filter material or rope form filter material, in the first anaerobic air tank 21, be injected with biological assistant A211, biological assistant A211 can be ferment or nutritive salt, in the first anaerobic air tank 21, be provided with one first thrust-augmenting nozzle 212, the bottom land of the first anaerobic air tank 21 is located in one end of the first thrust-augmenting nozzle 212, the other end of the first thrust-augmenting nozzle 212 extends in the second anaerobic air tank 22, in the second anaerobic air tank 22, be also provided with contact filtering material 220, contact filtering material 220 can be spherical porous property filter material or rope form filter material, in the second anaerobic air tank 22, be provided with one second thrust-augmenting nozzle 221, the bottom land of the second anaerobic air tank 22 is located in one end of the second thrust-augmenting nozzle 221, the other end of the second thrust-augmenting nozzle 221 extends in aerator tank 23, the bottom land of aerator tank 23 is provided with aerating system 230, aerating system 230 is connected to a gas blower 231, gas blower 231 is blown and carry out aeration to aerating system 230, the bottom land of aerator tank 23 is separately provided with a reflux pump 232, on reflux pump 232, be connected with a return line 233, return line 233 extends in the first anaerobic air tank 21, in aerator tank 23, be placed with biological carrier 234, biological carrier 234 can be suspension carrier or rope form carrier, in aerator tank 23, be injected with biological assistant B235, biological assistant B235 can be nitrifier, wall bottom between aerator tank 23 and settling bath 24 is provided with communication channel 236, the bottom land of settling bath 24 is provided with a swash plate 240, in settling bath 24, be provided with one the 3rd thrust-augmenting nozzle 241, the top in these settling bath 24 cell bodies is located in one end of the 3rd thrust-augmenting nozzle 241, the other end of the 3rd thrust-augmenting nozzle 241 extends in this disinfection trough 25, in disinfection trough 25, be injected with disinfectant 250, the wall that outer cell body 2 is positioned at disinfection trough 25 is provided with an Outlet Pipe 26, so, be the denitrogenation processing equipment of a sanitary sewage.
First anaerobic air tank 21 its objects of the present invention, be to provide good lonely environment, and in spherical porous property filter material or rope form filter material are wherein set, utilize the contact filtering material 210 arranging to increase the contact area of microorganism and sewage, and providing the implantation of lonely property denitration bacterium and purification of water quality microorganism. can stay in for a long time in the first anaerobic air tank 21, avoid order of succession to run off, and matrix in adsorbable influent stream water, influent stream pipe 20 of the present invention from top to bottom passes filter bed (contact filtering material 210) by sanitary sewage uniformly by the cell body top of the first anaerobic air tank 21, can effectively increase contacting of microorganism and matrix, promote processing efficiency.
Sanitary sewage is designed to 32 hours in the first interior residence time of anaerobic air tank 21, and in the suitable biological assistant A211(of the interior interpolation of the first anaerobic air tank 21 as ferment or nutritive salt), build the living environment of efficient bacterium the best, make it to form dominant bacteria, and promote denitration reaction, to maintain system stability.
The present invention also adjusts the allocation position of the first thrust-augmenting nozzle 212 of 22 of the first anaerobic air tank 21 to second anaerobic air tanks, the bottom land of the first anaerobic air tank 21 is located in one end of the first thrust-augmenting nozzle 212, the other end is located at the top in the second anaerobic air tank 22 cell bodies, after sanitary sewage can have been reacted by the first anaerobic air tank 21, again via in the first thrust-augmenting nozzle 212 overflow to the second anaerobic air tanks 22, can make sanitary sewage and the reflow treatment water (nitrated completing) of influent stream in the first anaerobic air tank 21, effectively stop, mix, sewage can effectively be contacted with biological contact filtering material 210, promotion reacts completely.
Second anaerobic air tank 22 its objects of the present invention, be to provide good double compression ring border, in spherical porous property filter material or rope form filter material are wherein set, utilize the contact filtering material 220 arranging to increase the contact area of microorganism and sewage, and providing the implantation of lonely property denitrifier and purification of water quality microorganism. can stay in for a long time in this second anaerobic air tank 22, promote that denitrification reaction carries out in this section, and matrix in adsorbable influent stream water, the filter bed of certain altitude (contact filtering material 220) can effectively increase contacting of microorganism and matrix in addition, promotes processing efficiency.
Sanitary sewage is designed to 16 hours in the time of the second anaerobic air tank 22 interior stops, adjust the allocation position of the second anaerobic air tank 22 to the second thrust-augmenting nozzle 221 of aerator tank 23, the bottom land of the second anaerobic air tank 22 is located in one end of the second thrust-augmenting nozzle 221, the other end is located at the top in these aerator tank 23 cell bodies, make the sanitary sewage can be by the second anaerobic air tank 22 tops whole bacteria bed (contact filtering material 220) of flowing through downwards, again by the second thrust-augmenting nozzle 221 overflows of the second anaerobic air tank 22 bottom lands to aerator tank 23, can make sanitary sewage effectively stop in the second anaerobic air tank 22, through the reacted sewage of the first anaerobic air tank 21 after this effectively contacts with contact filtering material 220, provide carbon source by former water COD, add the nitrate nitrogen in recirculation water, make denitration bacterium participate in reaction and then complete denitrogenation program.
The design of aerator tank 23 of the present invention, utilize gas blower 231 to provide suitable air communication to the aerating system 230 of bottom land configuration, make microorganism in aerator tank 23, carry out aerobic decomposition reaction, promote COD(Chemical Oxygen Demand, chemical oxygen demand (COD)) degraded and nitration reaction.
For improving biological respinse efficiency and reducing sludge creation, in the biological carrier 234 of the interior placement of aerator tank 23, can be along with aeration circulation in water produces disturbance, increase biological reactivity, utilize biological treatment function and the filtering function of biological carrier 234, COD and ammonia nitrogen can be reduced, and filter mud, reduce suspended solids (SS) concentration of the water of releasing.
The time that the present invention stops in aerator tank 23 is designed to 30 hours, and aerator tank 23 is provided with a reflux pump 232 in bottom land, and in the mud after aerobic reaction and liquid return to the first anaerobic air tank 21, to carry out denitrification reaction again, recurrence rate is planned to 200%.
The present invention adds suitable biological assistant B235(as nitrifier in aerator tank 23), the living environment of construction efficient bacterium the best, makes it to form dominant bacteria, and promotes nitration reaction, maintains system stability.
Settling bath 24 of the present invention (disengaging zone), after aerobic reaction, sewage flows into this settling bath 24 and clarifies, make solid settlement and guide by the swash plate 240 of the bottom land of settling bath 24 bottom land that is back to aerator tank 23 by communication channel 236, the mud of the bottom land of aerator tank 23 is directed in the first anaerobic air tank 21 by reflux pump 232 and return line 233, upper clear liquid after settling bath 24 precipitation process is directed in disinfection trough 25 by the 3rd thrust-augmenting nozzle 241, can be released or recycling by Outlet Pipe 26 via the sewage after complete process sterilization.
The denitrifying method of sanitary sewage of the present invention, refers to shown in Fig. 4, and its method steps is as follows:
(1). sanitary sewage is entered in the first anaerobic air tank 21 by influent stream pipe 20 influent streams, and add biological assistant A211 in the first anaerobic air tank 21, build the living environment of efficient bacterium the best, promote denitration reaction, sanitary sewage from top to bottom passes uniformly contact filtering material 210 in the cell body of the first anaerobic air tank 21, can increase the contact area of microorganism and sewage by the setting of contact filtering material 210, can stay in for a long time in the first anaerobic air tank 21, sanitary sewage is carried out to preliminary treatment, sewage can effectively be contacted with contact filtering material 210, promote to react completely.
(2). the sewage after these the first anaerobic air tank 21 preliminary treatments, be directed in the second anaerobic air tank 22 by the first aqueduct 212 of the first anaerobic air tank 21 bottom lands again, sewage from top to bottom evenly passes the contact filtering material 220 in the second anaerobic air tank 22 again in the second anaerobic air tank 22, can again increase the contact area of microorganism and sewage by the setting of contact filtering material 220, and provide the implantation of denitrifier and purification of water quality microorganism, can stay in for a long time in the second anaerobic air tank 22, promote denitrification reaction, and through the reacted sewage of the first anaerobic air tank 21, after effectively contacting with contact filtering material 220 in the second anaerobic air tank 22, provide carbon source by former water COD, add the nitrate nitrogen of recirculation water, make denitration bacterium participate in reaction and then complete denitrogenation program.
(3). the sewage after these the second anaerobic air tank 22 denitrogenation processing, be directed in aerator tank 23 by the second aqueduct 221 of the second anaerobic air tank 22 bottom lands again, and in aerator tank 23, add biological assistant B235(nitrifier), build the living environment of efficient bacterium the best, promote denitration reaction, by gas blower 231, air is squeezed in the aerating system 230 in aerator tank 23, make air by aerating system 230 aerations in the sewage of aerator tank 23, and the biological carrier 234 that is placed in aerator tank 23 can produce disturbance along with the circulation of water aeration, make to carry out aerobic decomposition reaction in microorganism and aerator tank 23, utilize biological treatment function and the filtering function of biological carrier 234, promote COD degraded and nitration reaction.
(4). by reflux pump 232, the part mud after aerobic reaction and sewage in the bottom land of aerator tank 23 are taken out and drawn and be directed in the first anaerobic air tank 21 by return line 233, the nitrate nitrogen of recirculation water in the first anaerobic air tank 21 is provided, makes denitration bacterium participate in reaction and then complete denitrogenation program.
(5). entered in settling bath 24 by communication channel 236 via the sewage after aerator tank 23 aeration aerobic reactions, sewage is clarified via settling bath 24, make solid settlement and guide by the swash plate 240 of the bottom land of settling bath 24 bottom land that is back to aerator tank 23 by communication channel 236, the mud of the bottom land of aerator tank 23 is directed in the first anaerobic air tank 21 by return line 233.
(6). be directed in disinfection trough 26 by the 3rd aqueduct 241 via the sewage after settling bath 24 clarifications, inject disinfectant 250 in disinfection trough 25, sewage is carried out disinfection, the sewage after sterilization is released or recycling by Outlet Pipe 26.
The sewage of the back segment for the treatment of facility of the present invention after nitration treatment, in the guiding of reflux pump 232 and return line 233 is back to the first anaerobic air tank 21, with the former water contact filtering material 210 of flowing through from top to bottom in the lump, and then complete denitrogenation program, and denitrifier is the on one's own account property bacterium of gas of holding concurrently, poor growth, thereby two anaerobic air tanks are set, with the denitrogenation program of two-section type, total nitrogen is minimized, and then purification of water quality is contributed to some extent.
The own environmental microorganism phase existing in the sewage disposal technology of the present invention by integrating traditional and sanitary sewage, utilize anaerobism, aerobic and reflux mode, reach denitrification functions in sanitary sewage, and the total nitrogen (T-N) of effectively degrading, biochemical oxygen demand (BOD) (BOD) and suspended solids (SS).
In sum, the present invention has reached desired application target and effect really, and more known person is desirable, practical for it, only, above-described embodiment is only specifically described for preferred embodiment of the present invention, this embodiment is not in order to limit the present patent application the scope of the claims, and other does not depart from the equalization completing under disclosed technique means and changes and modify such as, all should be contained in the claim that the present invention contains.
Claims (6)
1. the denitrogenation processing equipment of one way of life sewage, it is characterized in that it is provided with outer cell body, in this outer cell body, be sequentially provided with the first anaerobic air tank, the second anaerobic air tank, aerator tank, settling bath and disinfection trough, wherein a side wall surface of this outer cell body is provided with influent stream pipe and extends in this first anaerobic air tank, in this first anaerobic air tank, be provided with contact filtering material, in this first anaerobic air tank, be provided with the first thrust-augmenting nozzle, the bottom land of this first anaerobic air tank is located in one end of this first thrust-augmenting nozzle, the other end of this first thrust-augmenting nozzle extends in this second anaerobic air tank, in this second anaerobic air tank, be also provided with contact filtering material, in this second anaerobic air tank, be provided with the second thrust-augmenting nozzle, the bottom land of this second anaerobic air tank is located in one end of this second thrust-augmenting nozzle, the other end of this second thrust-augmenting nozzle extends in this aerator tank, the bottom land of this aerator tank is provided with aerating system, this aerating system is connected to a gas blower, this gas blower air-supply is carried out aeration to this aerating system, the bottom land of this aerator tank is separately provided with a reflux pump, on this reflux pump, be connected with a return line, this return line extends in this first anaerobic air tank, wall bottom between this aerator tank and this settling bath is provided with communication channel, the bottom land of this settling bath is provided with a swash plate, in this settling bath, be provided with the 3rd thrust-augmenting nozzle, the cell body top of this settling bath is located in one end of the 3rd thrust-augmenting nozzle, the other end of the 3rd thrust-augmenting nozzle extends in this disinfection trough, in this disinfection trough, be injected with disinfectant, the wall that this water jacket body is positioned at this disinfection trough is provided with Outlet Pipe.
2. the denitrifying method of one way of life sewage, is characterized in that comprising the steps:
(1). sanitary sewage is entered in the first anaerobic air tank by influent stream pipe influent stream, and add biological assistant A in this first anaerobic air tank, build the living environment of efficient bacterium the best, promote denitration reaction, sanitary sewage from top to bottom passes uniformly contact filtering material in the cell body of this first anaerobic air tank, can increase the contact area of microorganism and sewage by the setting of this contact filtering material, can stay in for a long time in this first anaerobic air tank, sanitary sewage is carried out to preliminary treatment, sewage can effectively be contacted with this contact filtering material, promote to react completely.
(2). the sewage after this first anaerobic air tank preliminary treatment, be directed in the second anaerobic air tank by the first aqueduct of the bottom land of this first anaerobic air tank again, sewage from top to bottom evenly passes the contact filtering material in this second anaerobic air tank again in this second anaerobic air tank, can again increase the contact area of microorganism and sewage by the setting of this contact filtering material, and provide the implantation of denitrifier and purification of water quality microorganism, can stay in for a long time in this second anaerobic air tank, promote denitrification reaction, and after the reacted sewage of this first anaerobic air tank effectively contacts with this contact filtering material in this second anaerobic air tank, make denitration bacterium participate in reaction and then complete denitrogenation program.
(3). the sewage after this second anaerobic air tank denitrogenation processing, be directed in aerator tank by the second aqueduct of the bottom land of this second anaerobic air tank again, and in this aerator tank, add biological assistant B, build the living environment of efficient bacterium the best, promote denitration reaction, by gas blower, air is squeezed in the aerating system in this aerator tank, make air by this aerating system aeration in the sewage of this aerator tank, and the biological carrier that is placed in this aerator tank can produce disturbance along with the circulation of water aeration, make to carry out aerobic decomposition reaction in microorganism and this aerator tank, utilize biological treatment function and the filtering function of this biology carrier, promote COD degraded and nitration reaction.
(4). by the reflux pump in this aerator tank, part mud after aerobic reaction and sewage in the bottom land of this aerator tank are taken out and drawn and be directed in this first anaerobic air tank by return line, the nitrate nitrogen of recirculation water in this first anaerobic air tank is provided, provide carbon source by former water COD, add the nitrate nitrogen of recirculation water, make denitration bacterium participate in reaction and then complete denitrogenation program.
(5). entered in settling bath by communication channel via the sewage after the aerobic reaction of this aerator tank, sewage is via this settling bath clarification, make solid settlement and be back to the bottom land of this aerator tank by the swash plate guiding of the bottom land of this settling bath by communication channel, the mud of the bottom land of this aerator tank is directed in this first anaerobic air tank by this return line.
(6.) can be directed in a disinfection trough by one the 3rd aqueduct via the sewage after this settling bath clarification, in this disinfection trough, inject disinfectant, sewage is carried out disinfection, the sewage after sterilization is released or recycling by Outlet Pipe.
3. the denitrogenation processing equipment of sanitary sewage as claimed in claim 1, is characterized in that: the contact filtering material in this first anaerobic air tank and this second anaerobic air tank is spherical porous property filter material or rope form filter material.
4. the denitrifying method of sanitary sewage as claimed in claim 2, is characterized in that: the contact filtering material in this first anaerobic air tank and this second anaerobic air tank is spherical porous property filter material or rope form filter material.
5. the denitrifying method of sanitary sewage as claimed in claim 2, is characterized in that: this biological assistant A is ferment or nutritive salt.
6. the denitrifying method of sanitary sewage as claimed in claim 2, is characterized in that: this biological assistant B is nitrifier.
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| CN201410087574.7A CN103896452A (en) | 2014-03-11 | 2014-03-11 | Equipment and method for removing nitrogen out of domestic wastewater |
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