CN205773895U - A kind of municipal sewage denitrification and dephosphorization equipment - Google Patents
A kind of municipal sewage denitrification and dephosphorization equipment Download PDFInfo
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- CN205773895U CN205773895U CN201620449480.4U CN201620449480U CN205773895U CN 205773895 U CN205773895 U CN 205773895U CN 201620449480 U CN201620449480 U CN 201620449480U CN 205773895 U CN205773895 U CN 205773895U
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- reactor
- ammonia oxidation
- anaerobic ammonia
- denitrification
- oxidation reactor
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Abstract
The utility model discloses a kind of municipal sewage denitrification and dephosphorization equipment, including the denitrification dephosphorizing reactor being sequentially connected with by main line, medium sediment pool, diverter, short distance nitration reactor and anaerobic ammonia oxidation reactor；Described anaerobic ammonia oxidation reactor is provided with water quality on-line determination instrument and flow controller, and described flow controller is connected with diverter；Described water quality on-line determination instrument can monitor nitrogen composition and content in anaerobic ammonia oxidation reactor water outlet in real time, controls medium sediment pool supernatant by flow controller and diverter and enters short distance nitration reactor and the allocation proportion of anaerobic ammonia oxidation reactor；And by by the part effluent recycling of anaerobic ammonia oxidation reactor to short distance nitration reactor and denitrification dephosphorizing reactor, it is achieved the further removal of nitrogen.This utility model provide a set of efficiently, low consumption, the municipal sewage denitrification and dephosphorization equipment of low cost.
Description
Technical field
This utility model relates to a kind of municipal sewage denitrification and dephosphorization equipment, belongs to urban sewage treatment technology field.
Background technology
Water resource, energy shortage and quality of water environment go from bad to worse, and have become as the bottleneck of socio-economic development, improve wastewater treatment rate and degree for the treatment of, the denitrogenation dephosphorizing usefulness of raising sewage treatment plant, the energy consumption of reduction sewage disposal have become the task of top priority.The increasingly stringent of sewage disposal discharge standard in recent years, and along with processing the raising required, the energy consumption of sewage disposal process improves the most therewith.In traditional sewage disposal technology, owing in denitrification dephosphorization technique, denitrogenation and dephosphorization exist competition and contradiction on response matrix (carbon source) and reaction compartment, it is difficult to obtain the effect that good N, P removes simultaneously, generally requires a large amount of external energies of consuming and could obtain relatively satisfactory effect.
This utility model develops a kind of municipal sewage denitrification and dephosphorization equipment, uses efficient accumulation NO2 ˉThe short distance nitration reactor of-N, introduce short distance nitration section and Anammox section multipoint water feeding mechanism, reasonable distribution enters short distance nitration reactor and the water inlet ratio of anaerobic ammonia oxidation reactor, reach the autotrophic denitrification efficiency of efficient stable, and by the denitrification dephosphorizing reactor of the effluent recycling of anaerobic ammonia oxidation reactor to leading portion, under the conditions of anaerobic/anoxic alternate run, utilize the NO of backflow3 ˉAnd NO2 ˉAs electron acceptor, denitrification process and dephosphorization process are integrated, reaches simultaneous phosphorus and nitrogen removal purpose.
Utility model content
The purpose of this utility model is to provide a kind of municipal sewage denitrification and dephosphorization equipment.
Technical solution adopted in the utility model is:
A kind of municipal sewage denitrification and dephosphorization equipment, including the denitrification dephosphorizing reactor being sequentially connected with by main line, medium sediment pool, diverter, short distance nitration reactor and anaerobic ammonia oxidation reactor；The mud return line that mud in medium sediment pool can be imported denitrification dephosphorizing reactor it is provided with between described denitrification dephosphorizing reactor and medium sediment pool；The sewage backflow pipe that the water outlet of anaerobic ammonia oxidation reactor can be imported denitrification dephosphorizing reactor it is provided with between described denitrification dephosphorizing reactor and anaerobic ammonia oxidation reactor；The pipeline that the water outlet of diverter can be imported anaerobic ammonia oxidation reactor it is provided with between described diverter and anaerobic ammonia oxidation reactor；The sewage backflow pipe that the water outlet of anaerobic ammonia oxidation reactor can be imported short distance nitration reactor it is provided with between described short distance nitration reactor and anaerobic ammonia oxidation reactor；Described anaerobic ammonia oxidation reactor is provided with water quality on-line determination instrument and flow controller, and described flow controller is connected with diverter.
Further, described denitrification dephosphorizing reactor is provided with water inlet pipe, mud return line, sewage backflow pipe, outlet pipe, blow-down pipe, aeration facility and stirring facility.
Further, described denitrification dephosphorizing reactor is made up of anaerobic zone and aerobic area, and water inlet pipe and mud return line are arranged on anaerobic zone, and sewage backflow pipe, outlet pipe, blow-down pipe, aeration facility and stirring facility are arranged on aerobic area.
Further, described medium sediment pool is provided with water inlet pipe, outlet pipe and mud return line.
Further, described short distance nitration reactor is provided with water inlet pipe, outlet pipe, mud return line, sewage backflow pipe, blow-down pipe, temperature controller, DO analyzer and aeration facility.
Further, described anaerobic ammonia oxidation reactor is provided with water inlet pipe, outlet pipe, blow-down pipe, backwash tube, temperature controller.
The beneficial effects of the utility model are:
1) denitrification dephosphorizing reactor in municipal sewage denitrification and dephosphorization equipment of the present utility model is divided into anaerobic zone and aerobic area, the dephosphorization demand to electron acceptor whether can be met according to nitrogen oxides in anaerobic ammonia oxidation reactor backflow, judge to use anoxia or aerobic condition, it is possible not only to realize organic efficient utilization and ensure phosphor-removing effect, the nitrogen oxides in anaerobic ammonia oxidation reactor water outlet can also be carried out advanced treating simultaneously；
2) the short distance nitration reactor of municipal sewage denitrification and dephosphorization equipment of the present utility model only needs to control reaction temperature and aeration rate reaches the most sub-nitrogen accumulation, shunting by medium sediment pool supernatant, control to enter the sewage ratio in short distance nitration reactor and anaerobic ammonia oxidation reactor, thus realize efficient autotrophic denitrification process, compared with existing half short distance nitration reactor, short distance nitration reactor and the control condition of anaerobic ammonia oxidation reactor in this utility model are the easiest and stable；
3) nitrogen in anaerobic ammonia oxidation reactor water outlet can be formed by municipal sewage denitrification and dephosphorization equipment of the present utility model and content is monitored in real time, control medium sediment pool supernatant according to the nitrogen content in water outlet and enter short distance nitration reactor and the ratio of anaerobic ammonia oxidation reactor, and realize controlling flexibly of anaerobic ammonia oxidation reactor capacity of returns, thus obtain efficient pollutant removal.
Accompanying drawing explanation
Fig. 1 is the structural representation of municipal sewage denitrification and dephosphorization equipment of the present utility model.
Accompanying drawing identifier declaration: 1, denitrification dephosphorizing reactor；11, water inlet pipe；12, aeration facility；13, stirring facility；14, gas flowmeter；15, blower fan；16, blow-down pipe；2, medium sediment pool；21, pipeline；22, mud return line；23, blow-down pipe；3, diverter；31, pipeline；32, pipeline；33, pipeline；34, flow controller；35, water quality on-line determination instrument；4, short distance nitration reactor；41, temperature controller；42, DO analyzer；43, gas flowmeter；44, blower fan；45, aeration facility；46, mud return line；47, blow-down pipe；5, anaerobic ammonia oxidation reactor；51, pipeline；52, backwash tube；53, temperature controller；54, blow-down pipe；55, outlet pipe；56, sewage backflow pipe；57, sewage backflow pipe.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the utility model is further explained and explanation.
Embodiment:
As it is shown in figure 1, municipal sewage denitrification and dephosphorization equipment of the present utility model, including the denitrification dephosphorizing reactor 1 being sequentially connected with by main line, medium sediment pool 2, diverter 3, short distance nitration reactor 4 and anaerobic ammonia oxidation reactor 5；Described denitrification dephosphorizing reactor 1 is connected by pipeline 21 with medium sediment pool 2；Described medium sediment pool 2 is connected by pipeline 31 with diverter 3；Described diverter 3 is connected by pipeline 32 with short distance nitration reactor 4；Described short distance nitration reactor 4 is connected by pipeline 51 with anaerobic ammonia oxidation reactor 5；The mud return line 22 that mud in medium sediment pool 2 can be imported denitrification dephosphorizing reactor 1 it is provided with between described denitrification dephosphorizing reactor 1 and medium sediment pool 2；The sewage backflow pipe 57 that the water outlet of anaerobic ammonia oxidation reactor 5 can be imported denitrification dephosphorizing reactor 1 it is provided with between described denitrification dephosphorizing reactor 1 and anaerobic ammonia oxidation reactor 5；The pipeline 33 that the water outlet of diverter 3 can be imported anaerobic ammonia oxidation reactor 5 it is provided with between described diverter 3 and anaerobic ammonia oxidation reactor 5；The sewage backflow pipe 56 that the water outlet of anaerobic ammonia oxidation reactor 5 can be imported short distance nitration reactor 4 it is provided with between described short distance nitration reactor 4 and anaerobic ammonia oxidation reactor 5；Described anaerobic ammonia oxidation reactor 5 is provided with water quality on-line determination instrument 35 and flow controller 34, and flow controller 34 is connected with diverter 3.
Preferably, described denitrification dephosphorizing reactor 1 uses suspension growth activated sludge tank type, anaerobic zone and aerobic area it is divided in pond, water inlet pipe 11 and mud return line 22 are arranged on anaerobic zone, sewage backflow pipe 57, aeration facility 12, stirring facility 13 and blow-down pipe 16 are arranged on aerobic area, and aeration facility 12 is also associated with gas flowmeter 14 and blower fan 15.
Preferably, described medium sediment pool 2 is provided with mud return line 22, and mud return line 22 is provided with blow-down pipe 23.
Preferably, described short distance nitration reactor 4 uses suspension growth activated sludge tank type, cell body embedded mud-water separation district, be provided with temperature controller 41 in reactor, DO analyzer 42, aeration arrange 45, mud return line 46 and blow-down pipe 47, and aeration facility 45 is also associated with gas flowmeter 43 and blower fan 44.
Preferably, described anaerobic ammonia oxidation reactor 5 uses biofilm reactor, is provided with backwash tube 52, temperature controller 53, blow-down pipe 54 and outlet pipe 55.
Municipal sewage denitrification and dephosphorization equipment of the present utility model runs in the following manner: through water inlet pipe 11, pretreated municipal sewage is imported denitrification dephosphorizing reactor 1, denitrification dephosphorizing reactor 1 is made up of anaerobic zone and aerobic area, anaerobic zone receives the returned sludge in medium sediment pool 2 by mud return line 22, and aerobic area receives the backflow of anaerobic ammonia oxidation reactor 5 by sewage backflow pipe 57.When in the backflow of anaerobic ammonia oxidation reactor 5, nitrogen oxides is more, when can meet the electron acceptor needed for denitrification dephosphorization, stop the aeration facility 12 of the aerobic area of denitrification dephosphorizing reactor 1, open stirring facility 13, the denitrifying phosphorus removing bacteria being now enriched with in denitrification dephosphorizing reactor 1 is with the nitrogen oxides in backflow as electron acceptor, anaerobic/anoxic operating mode is now used to run, it is achieved to remove while nitrogen, phosphorus；When nitrogen oxides is less in the backflow of anaerobic ammonia oxidation reactor 5, is insufficient for the electron acceptor needed for dephosphorization, close stirring facility 13, open aeration facility 12, now use aerobic/anaerobic operating mode to run, it is achieved the removal of phosphorus；Mixed liquor in denitrification dephosphorizing reactor 1 21 enters medium sediment pool 2 by the road, mud-water separation is carried out in medium sediment pool 2, wherein mud is partly refluxed to the anaerobic zone of denitrification dephosphorizing reactor 1 through mud return line 22, supernatant 31 enters diverter 3 by the road, shunt through diverter 3, a part of sewage is entered short distance nitration reactor 4 by pipeline 32, and a part of sewage is entered anaerobic ammonia oxidation reactor 5 by pipeline 33；The NH of the anaerobic ammonia oxidation reactor 5 that the assignment of traffic ratio of pipeline 32 and pipeline 33 is detected according to water quality on-line determination instrument 35 by flow controller 344 +-N content determines；32 sewage entering short distance nitration reactor 4 carry out short distance nitration reaction at this by the road, make the NH in sewage4 +-N is converted into NO2 ˉ-N, being provided with between aerobic zone and settling zone in short distance nitration reactor 4 can be by the sludge reflux pipeline 46 of settling zone sludge reflux to aerobic zone, sewage in short distance nitration reactor 4 51 enters anaerobic ammonia oxidation reactor 5 by the road, in anaerobic ammonia oxidation reactor 5 by the road 51 and pipeline 33 enter sewage mixed and stored, in anaerobic ammonia oxidation reactor 5 under the effect of the anaerobic ammonia oxidizing bacteria of enrichment, the NH in water inlet4 +-N and NO2 ˉ-N is removed, and can produce a small amount of NO simultaneously3 ˉ-N, the water outlet of anaerobic ammonia oxidation reactor 5 is a part of discharges through outlet pipe 55, and another part is back to denitrification dephosphorizing reactor 1 through sewage backflow pipe 57, provides electron acceptor for denitrifying phosphorus removing bacteria, and removes the nitrate in backflow.
Use equipment of the present utility model to carry out the process of municipal sewage denitrogenation dephosphorizing to comprise the following steps:
1) denitrification dephosphorization: municipal sewage (sewage total amount is designated as Q) is entered denitrification dephosphorizing reactor 1 by water inlet pipe 11 after pretreatment of removing slag, inoculate municipal wastewater treatment plant obtain the activated sludge with denitrogenation dephosphorizing function (SRT is 6d, HRT is 5h), after inoculation, sludge concentration MLSS is 3000～4000mg/L, when in the backflow of anaerobic ammonia oxidation reactor 5, nitrogen oxides is more, when meeting the electron acceptor needed for denitrification dephosphorization, stop the aeration facility of aerobic area, open stirring facility simultaneously, now denitrification dephosphorizing reactor 1 runs under anaerobic/anoxic operating mode, in denitrification dephosphorizing reactor 1, the denitrifying phosphorus removing bacteria of enrichment is using the nitrogen oxides in backflow as electron acceptor, realize nitrogen, remove while phosphorus；When nitrogen oxides is less in the backflow of anaerobic ammonia oxidation reactor 5, is insufficient for the electron acceptor needed for dephosphorization, stopping stirring, open aeration, now this unit uses aerobic/anaerobic operating mode to run, it is achieved the removal of phosphorus；
2) medium sediment pool: municipal sewage, after denitrification dephosphorizing reactor 1, eliminates most Organic substance and phosphorus containg substances, and part nitrogen is also removed herein；Then, mixed liquor entrance medium sediment pool 2 carries out mud-water separation；The partial sludge (sludge quantity is designated as r, r=20%～50%Q) of medium sediment pool 2 is back to the anaerobic zone of denitrification dephosphorizing reactor 1, arranges outside remaining mud；Supernatant respectively enters short distance nitration reactor 4 and anaerobic ammonia oxidation reactor 5 by a certain percentage；
3) diverter: the water outlet of medium sediment pool 2 being introduced diverter 3, is classified as two parts in diverter 3, (sewage quantity is designated as q in Part I water outlet1, q1=50%～70%Q) entering short distance nitration reactor, (sewage quantity is designated as q in Part II water outlet2, q2=30%～50%Q) anaerobic ammonia oxidation reactor is entered, by the water quality on-line determination instrument on anaerobic ammonia oxidation reactor 5, the nitrogen composition in anaerobic ammonia oxidation reactor 5 water outlet and content are monitored in real time, and result is exported to flow controller control sewage entrance short distance nitration reactor 4 and the ratio of anaerobic ammonia oxidation reactor 5；As NH in water outlet4 +When-N content is higher, it is lowered into the sewage quantity of anaerobic ammonia oxidation reactor 5, as NO in water outlet2 ˉWhen-N content is higher, improve the sewage quantity entering anaerobic ammonia oxidation reactor 5；As NO in water outlet3 ˉWhen-N content is higher, improves anaerobic ammonia oxidation reactor 5 and be back to the sewage quantity of denitrification dephosphorizing reactor 1 (sewage quantity is designated as R1, R1=50%～100%Q)；
4) short distance nitration: short distance nitration reactor 4 uses and flows reaction unit continuously, put into the nitrifying sludge that municipal wastewater treatment plant obtains, after inoculation, sludge concentration MLSS is 3000～6000mg/L, by 10 days, DO consume miscellaneous bacteria in mud more than the overexposure pretreatment of 1.5mg/L, then control temperature be 30 DEG C, DO be 0.5mg/L, SRT be 8d, HRT be the Effec-tive Function realizing short distance nitration under conditions of 4h；Short distance nitration unit is rich in NO2 ˉThe water outlet of-N enters anaerobic ammonia oxidation reactor 5 with another part supernatant of medium sediment pool；Short distance nitration reactor 4 is in above-mentioned operation, continuous aeration is realized by aeration facility 45, the DO change in short distance nitration reactor 4 is monitored in real time by DO analyzer 42, controlling aeration rate by blower fan 44 and gas flowmeter 43, being monitored in real time by temperature controller 41 and controlling sewage temperature is 30 DEG C；The mud mixing of short distance nitration reactor 4 settling zone and aeration zone is realized by mud return line 46；Regular spoil disposal and the operation maintenance of short distance nitration reactor 4 is realized by blow-down pipe 47；
5) Anammox: anaerobic ammonia oxidation reactor 5 uses biofilm reactor, is provided with volcanic rock filtrate, and filling rate is 50%, upward flow operational mode, and filtering velocity is 1.8m/h, and to control its reaction temperature be 25～35 DEG C；In this unit under the effect of the anaerobic ammonia oxidizing bacteria of enrichment, the NH in water inlet4 +-N and NO2 ˉ-N is removed, and can produce a small amount of NO simultaneously3 ˉThe part effluent recycling of-N, to denitrification dephosphorizing reactor, provides electron acceptor for denitrifying phosphorus removing bacteria, the most also can process the nitrogen oxides of residual in water outlet further, improve the overall denitrification efficiency of system.Additionally, the water part of anaerobic ammonia oxidation reactor is back to short distance nitration reactor, (sewage quantity is designated as R2, R2=50%～100%Q).
In the present embodiment, influent quality leading indicator is as follows: COD:200～300mg/L, NH4 +-N:15～30mg/L, TN:25～40mg/L, TP:2～4mg/L, SS:130～320mg/L, pH value: 6.9～7.1.According to the step of above-mentioned detailed description of the invention, after the domestications of 3 months and cultivating, the effluent quality of this covering device is as follows: COD: < 25.0mg/L, NH4 +-N: < 1.0mg/L, TN: < 7.0mg/L, TP: < 0.5mg/L, effluent quality is far superior to " integrated wastewater discharge standard (GB8978-1996) " one-level A standard-required.Analysis method employed in test is all according to the standard method in " water and effluent monitoring analyze method (fourth edition) ".
SRT: sludge age；HRT: hydraulic detention time；MLSS: mixed genetic-neural network.
Above-described embodiment is this utility model preferably embodiment; but embodiment of the present utility model is also not restricted to the described embodiments; other any without departing from the change made under spirit of the present utility model and principle, modify, substitute, combine, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.
Claims (6)
1. a municipal sewage denitrification and dephosphorization equipment, it is characterised in that: include denitrification dephosphorizing reactor, medium sediment pool, diverter, short distance nitration reactor and the anaerobic ammonia oxidation reactor being sequentially connected with by main line；The mud return line that mud in medium sediment pool can be imported denitrification dephosphorizing reactor it is provided with between described denitrification dephosphorizing reactor and medium sediment pool；The sewage backflow pipe that the water outlet of anaerobic ammonia oxidation reactor can be imported denitrification dephosphorizing reactor it is provided with between described denitrification dephosphorizing reactor and anaerobic ammonia oxidation reactor；The pipeline that the water outlet of diverter can be imported anaerobic ammonia oxidation reactor it is provided with between described diverter and anaerobic ammonia oxidation reactor；The sewage backflow pipe that the water outlet of anaerobic ammonia oxidation reactor can be imported short distance nitration reactor it is provided with between described short distance nitration reactor and anaerobic ammonia oxidation reactor；Described anaerobic ammonia oxidation reactor is provided with water quality on-line determination instrument and flow controller, and described flow controller is connected with diverter.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 1, it is characterised in that: described denitrification dephosphorizing reactor is provided with water inlet pipe, mud return line, sewage backflow pipe, outlet pipe, blow-down pipe, aeration facility and stirring facility.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 2, it is characterized in that: described denitrification dephosphorizing reactor is made up of anaerobic zone and aerobic area, water inlet pipe and mud return line are arranged on anaerobic zone, and sewage backflow pipe, outlet pipe, blow-down pipe, aeration facility and stirring facility are arranged on aerobic area.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 1, it is characterised in that: described medium sediment pool is provided with water inlet pipe, outlet pipe and mud return line.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 1, it is characterised in that: described short distance nitration reactor is provided with water inlet pipe, outlet pipe, mud return line, sewage backflow pipe, blow-down pipe, temperature controller, DO analyzer and aeration facility.
A kind of municipal sewage denitrification and dephosphorization equipment the most according to claim 1, it is characterised in that: described anaerobic ammonia oxidation reactor is provided with water inlet pipe, outlet pipe, blow-down pipe, backwash tube, temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620449480.4U CN205773895U (en) | 2016-05-17 | 2016-05-17 | A kind of municipal sewage denitrification and dephosphorization equipment |
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| CN201620449480.4U CN205773895U (en) | 2016-05-17 | 2016-05-17 | A kind of municipal sewage denitrification and dephosphorization equipment |
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| CN205773895U true CN205773895U (en) | 2016-12-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105859040A (en) * | 2016-05-17 | 2016-08-17 | 广州市市政工程设计研究总院 | Method and equipment for nitrogen and phosphorus removal of municipal wastewater |
| CN106865768A (en) * | 2017-03-22 | 2017-06-20 | 北京工业大学 | The short-cut nitrification and denitrification dephosphorization of SBR parts couples the apparatus and method of Anammox |
| CN112062398A (en) * | 2020-09-04 | 2020-12-11 | 浙江埃克钛环境科技有限公司 | Method for treating landfill leachate |
-
2016
- 2016-05-17 CN CN201620449480.4U patent/CN205773895U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105859040A (en) * | 2016-05-17 | 2016-08-17 | 广州市市政工程设计研究总院 | Method and equipment for nitrogen and phosphorus removal of municipal wastewater |
| CN105859040B (en) * | 2016-05-17 | 2018-09-07 | 广州市市政工程设计研究总院 | A kind of municipal sewage denitrification and dephosphorization method and equipment |
| CN106865768A (en) * | 2017-03-22 | 2017-06-20 | 北京工业大学 | The short-cut nitrification and denitrification dephosphorization of SBR parts couples the apparatus and method of Anammox |
| CN112062398A (en) * | 2020-09-04 | 2020-12-11 | 浙江埃克钛环境科技有限公司 | Method for treating landfill leachate |
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