CN103833131B - Deep sewage denitrification treatment equipment and deep sewage denitrification treatment method - Google Patents
Deep sewage denitrification treatment equipment and deep sewage denitrification treatment method Download PDFInfo
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- CN103833131B CN103833131B CN201410091440.2A CN201410091440A CN103833131B CN 103833131 B CN103833131 B CN 103833131B CN 201410091440 A CN201410091440 A CN 201410091440A CN 103833131 B CN103833131 B CN 103833131B
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Abstract
The invention discloses deep sewage denitrification treatment equipment comprising a water inflow system, a carbon source adding system, a denitrification reactor and a clean water pool, wherein the denitrification reactor at least comprises a premixing layer, a suspension packing layer, a sand filtering layer and a clear water layer in sequence from bottom to top or from top to bottom, the water inflow system and the carbon source adding system both are communicated with the premixing layer, and the clear water layer is communicated with the clear water pool. The invention further discloses a corresponding deep sewage denitrification treatment method. The deep sewage denitrification treatment equipment and deep sewage denitrification method disclosed by the invention not only have high denitrification efficiency and good effect, but also can be used for significantly reducing the turbidity of effluent.
Description
Technical field
The present invention relates to sewage treatment area, particularly a kind of sewage denitrification advanced nitrogen processing equipment and process side
Method.
Background technology
In sewage effluent, nitrogen phosphorus is the important nutrient causing body eutrophication.Ask with Chinese body eutrophication
That inscribes is on the rise, and the lifting of following sewage drainage standard, the stable sewage water intensification denitrification dephosphorization skill of research and development economical and efficient
Art, it has also become the technical need that sewage treatment area is badly in need of.
Current sewage disposal faces high standard emission request, and the such as country such as the U.S., Canada Effluent criteria TN is less than 3mg/L
And TP is less than 0.18mg/L.Nitrogen in sewage is mainly removed by nitration denitrification process, and wherein denitrification needs are organic
As electron donor, using nitrate nitrogen as electron acceptor, denitrification nitrate nitrogen is nitrogen to carbon source etc., reaches and removes nitrogen in sewage
Purpose.A lot of sewage treatment plants are faced with low into water organic carbon source concentration, are not enough to support the carrying out of effective denitrification denitrogenation.Institute
So that sewage treatment process upgrading needs to add external source carbon source in secondary treatment process or in advanced treatment process, by force
Change sewage denitrification denitrogenation.Advanced nitrogen process is carried out to secondary effluent, is wide variety of strengthened denitrification strategy, is adopted
Technique includes biofilter, suspended filler biofilm technique and fluidized bed bio membrane process etc..Wherein, suspended filler biofilm work
Skill is to add certain metric density in reactor close to the filler of water, and the growth for microorganism provides habitat, it will improve
Biomass and biological species in reactor, and then improve the treatment effeciency of reactor.Suspended filler biofilm denitrification denitrogenation work
Skill has that treatment effeciency is high, denitrification effect is good, simple to operate the features such as, be widely used in advanced treatment of wastewater.But only
Carry out denitrification only with floating stuffing, water outlet contains higher concentration particulate matter and suspended material, causes higher turbidity.Tradition
Because the packing density such as sandstone is larger in sand filtration denitrification denitrogenation technique, filling rate relatively is relatively low, effective profit to reactor
Also accordingly reduced with rate；Meanwhile, easily cause blocking during process operation, be unfavorable for process operation.
Content of the invention
Present invention is primarily targeted at providing a kind of sewage denitrification advanced nitrogen processing equipment and processing method, both had
Have the advantages that nitric efficiency height, effect are good, delivery turbidity can be significantly reduced again.
For achieving the above object, the present invention employs the following technical solutions：
A kind of sewage denitrification advanced nitrogen processing equipment, anti-including water inlet system, carbon source dosing system, denitrification denitrogenation
Answer device and clear water reserviors, described denitrification denitrogenation reactor at least includes premixing from bottom to top or from top to bottom successively
Layer, floating stuffing layer, sand filter blanket and clear water layer, described water inlet system connects described premix layer, institute with described carbon source dosing system
State clear water layer and connect described clear water reserviors.
Preferably, described sand filter blanket includes supporting layer and the sand filtration bed of material being located on described supporting layer, it is furthermore preferred that described
Supporting layer and the described sand filtration bed of material are respectively 10-20cm thickness.
Preferably, also include removing water and/or gas by described denitrification denitrogenation reactor from bottom to top
The backwashing system of the suspended particulate matter especially in filler in reactor.
Preferably, the filling rate of described floating stuffing layer is less than 70%.
Preferably, described backwashing system include by bottom from the water in described clear water reserviors to described denitrification denitrogenation reactor
The backwash pump that portion to top conveys, and by gas to bottom to the top of described denitrification denitrogenation reactor convey anti-
Rinse air pump, it is furthermore preferred that between described backwash pump and described denitrification denitrogenation reactor, described backwash air pump and institute
State and be provided with check-valves between denitrification denitrogenation reactor.
Preferably, described denitrification denitrogenation reactor is be provided with sample tap columnar structured.
Preferably, it is provided with perforate dividing plate, in order to intercept floating stuffing between described premix layer and described floating stuffing layer.
Preferably, described water inlet system and described carbon source dosing system each include peristaltic pump.
Preferably, described clear water layer leads to and is provided with outlet valve on the pipeline of described clear water reserviors.
A kind of sewage denitrification deepness denitrogenation method for treating, using described sewage denitrification advanced nitrogen processing equipment, institute
The method of stating includes：
Make accessing pending water anti-in described denitrification denitrogenation with carbon source by described water inlet system and described carbon source dosing system
Answer the described premix layer mixing of the bottom/top of device, then the denitrification sequentially passing through described floating stuffing layer and described sand filter blanket
Process and described sand filter blanket removes suspended particulate matter in eliminating water, the clear water obtaining enters the described of the top/bottom of reactor
Clear water layer, then drained in described clear water reserviors by described clear water layer.
Preferably, the nitrate nitrogen concentration of the water inlet according at least to detection and/or water outlet, to adjust described carbon source and to add and be
The dosage flow velocity of system.
A kind of sewage denitrification deepness denitrogenation method for treating, using the described sewage denitrification including described backwashing system
Advanced nitrogen processing equipment, methods described includes：
Sewage disposal process, is closed described backwashing system, is made by described water inlet system and described carbon source dosing system
The described premix layer of the bottom/top in described denitrification denitrogenation reactor mixes accessing pending water with carbon source, then sequentially passes through institute
State floating stuffing layer and the denitrification process of described sand filter blanket and described sand filter blanket removes suspended particulate matter in eliminating water, obtain
Clear water enters the described clear water layer of the top/bottom of reactor, then is drained in described clear water reserviors by described clear water layer；
Backwash process, closes described water inlet system and described carbon source dosing system, and leads to described clear in described clear water layer
In the case that the position of the outlet in pond is less than the position of backwash outlet, closes described clear water layer and lead to described clear water reserviors
Then water and/or gas are removed outstanding reactor by outlet valve from bottom to top by described denitrification denitrogenation reactor
It is the suspended particulate matter in filler,
Preferably, backwashing period and time are controlled according at least to the loss of flood peak and/or change in flow situation.
The Advantageous Effects of the present invention：
By from bottom to top or from top to bottom successively at least provided with premix layer, floating stuffing layer, sand filter blanket and
The design of clear water layer, the present invention not only has the treatment effeciency that traditional suspended filler biofilm denitrification denitrogenation technique has
Height, denitrification effect are good, simple operation and other advantages, effectively eliminate floating stuffing also by the sand filtration being originally used for denitrification denitrogenation
The suspended particulate matter producing in processing water, significantly improves water clarification degree.Work compared with traditional use sand filtration denitrogenation
Skill, the relatively small number of sand filter blanket of the present invention is not easy to result in blockage.
In a preferred embodiment, after implementing sewage disposal, backwash is carried out by backwashing system, can
Fully remove in reactor particle in especially filler etc., it is to avoid particle etc. causes the loss of flood peak to increase or make
Become filter clogging.
Brief description
Fig. 1 is a kind of structural representation of specific embodiment of sewage denitrification advanced nitrogen processing equipment of the present invention；
Fig. 2 is the structural representation of sewage denitrification advanced nitrogen processing equipment another kind specific embodiment of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.It is emphasized that the description below is only shown
Example property, rather than in order to limit the scope of the present invention and its application.
Refering to Fig. 1 and Fig. 2, according to embodiments of the invention, sewage denitrification advanced nitrogen processing equipment is included into water system
System, carbon source dosing system, denitrification denitrogenation reactor (or claiming biofilm system) and clear water reserviors, described denitrification denitrogenation reactor
At least include successively premixing layer, floating stuffing layer, sand filter blanket and clear water layer from bottom to top, or, described denitrification denitrogenation
Reactor at least includes premixing layer, floating stuffing layer, sand filter blanket and clear water layer from top to bottom successively.Described water inlet system and
Described carbon source dosing system all connects described premix layer, described clear water layer connection in the bottom of denitrification denitrogenation reactor or top
Described clear water reserviors.
In preferred embodiment, sewage denitrification advanced nitrogen processing equipment includes also including backwashing system, and this is anti-
Rinse-system is used for removing reactor water and/or gas from bottom to top by described denitrification denitrogenation reactor,
Suspended particulate matter especially in floating stuffing, thus avoid particle etc. to cause the loss of flood peak to increase or cause filtrate
Blocking.
According to the above-mentioned difference configuration from bottom to top, denitrification denitrogenation reactor accordingly can be designed as two kinds of moulds
Formula：Upward flow pattern and lower to stream mode.Both of which can be designed to cylindrical structural.For upward flow pattern, under
Layer is premix layer (water distribution uniformity region)；Then it is floating stuffing layer, its filling rate is preferably controlled in less than 70%, to realize
Backwash stage preferable mix and blend effect；Then supporting layer (preferably 10-20cm) and sand filtering material are included for sand filter blanket above
Layer (preferably 10-20cm)；It is topmost clear water layer, preferably the 2 of sand filter blanket times height.For lower to stream mode, the superiors are
Premix layer (water distribution uniformity region)；Then it is preferably controlled in less than 70% for its filling rate of floating stuffing layer, to realize in recoil
Stage of washing preferable mix and blend effect；Then include supporting layer (preferably 10-20cm) for sand filter blanket below and the sand filtration bed of material is (excellent
Select 10-20cm)；Bottom is clear water layer.Under both of which, for the high whole reactor of 3-6m, floating stuffing layer
Preferably account for about 80% height.
Required secondary effluent to be processed can be pumped in biomembrane process by intake pump.Flow of inlet water can be mainly according to work
Skill processes load and is designed, and considers filtering velocity problem simultaneously.
Carbon source dosing system can be mainly and is made up of automation control system, by automatic control program control.Carbon source
Dosing system can include the electrodes such as online nitrate nitrogen and SS, and water inlet and/or water outlet nitrate nitrogen concentration are detected, comes
Adjust dosage flow velocity.
Backwashing system can mainly according to the loss of flood peak and/or change in flow situation control backwashing period and when
Between.
Refering to Fig. 1, in a kind of specific embodiment, sewage denitrification denitrogenation processing equipment includes:Water inlet peristaltic pump 1, enter
Medicine peristaltic pump 2, carbon source storage bin 3, premix layer 4, dividing plate 5, floating stuffing layer 6, sample tap 7, supporting layer 8, quartz sand layer 9, clear
Water outlet 10, backwash outlet 11, backwash pump 12, backwash air pump 13, controller 14, check-valves 15, clear water reserviors
16th, clear water layer 20.
Sewage disposal process according to the present embodiment adopts upward flow pattern.Sewage Plant secondary effluent passes through intake pump the bottom of from
Portion enters reactor, adopts dosing pump from carbon source needed for the addition of bottom, both are sufficiently mixed in bottom premix layer, so simultaneously
Enter floating stuffing layer (it is in suspended state above premix layer) above afterwards, anti-nitration reaction occurs to remove nitrate
Nitrogen, the sewage after process removes suspended particulate matter further through supporting layer and quartz sand layer, and the clear water finally obtaining passes through
Clear water layer drains into clear water reserviors from reactor.Backwash can also be carried out, reduced according to flow velocity and/or the loss of flood peak determines instead
Flushing cycle and time.During backwash, open backwash pump and backwash air pump, it is gentle to intake below reactor, to anti-
The particle in especially filler etc. is answered in device fully to be removed.In backwash process, water inlet peristaltic pump is wriggled with entering medicine
Pump cuts out.After backwash, restart start to process sewage.Metering flow rate pump can be according to the nitrate nitrogen concentration of electrode detection
It is adjusted.
Refering to Fig. 2, in another kind of specific embodiment, sewage denitrification denitrogenation processing equipment includes:Water inlet peristaltic pump 1,
Enter medicine peristaltic pump 2, water inlet 23, feeding opening 24, carbon source storage bin 3, backwash pump 12, backwash air pump 13, clear water water outlet
Mouthfuls 10, outlet valve 19, clear water layer 20, supporting layer 8, quartz sand layer 9, premix layer 4, dividing plate 5, floating stuffing layer 6, sample tap 7, anti-
Rinse outlet 11, clear water reserviors 16, exhaust-valve 18, check-valves 15, controller 14.
Sewage disposal process according to the present embodiment is using lower to stream mode.Sewage Plant secondary effluent passes through intake pump from upper
Portion enters reactor, adopts dosing pump from carbon source needed for the addition of top, both are sufficiently mixed in top premix layer, so simultaneously
Enter following floating stuffing layer (it is in suspended state below premix layer) afterwards, anti-nitration reaction occurs to remove nitrate
Nitrogen, the sewage after process flows down to quartz sand layer and supporting layer removes suspended particulate matter further, the clear water finally obtaining
Through clear water layer, clear water reserviors are drained into from reactor by U-tube.Backwash can also be carried out, according to flow velocity reduce and/or
The loss of flood peak determines backwashing period and time.During backwash, open backwash pump and backwash air pump, from bottom water inlet and
Gas, is fully removed to particle especially in filler etc. in reactor.In backwash process, water inlet and carbon source add
Pump cuts out, and outlet valve is closed simultaneously, it is to avoid backwashing water is discharged by drain pipe.Restart intake pump and enter carbon source after backwash
Pump, start to process sewage.Metering flow rate pump is adjusted according to the nitrate nitrogen concentration of electrode detection.
Controller shown in Fig. 1-Fig. 2 has multiple, and number is only schematically, and actual quantity can be less than the number of diagram
Or only one controller, technical process is controlled using centralized control.
Experimental verification by contrast, when only with traditional floating stuffing, delivery turbidity is between 10-50NTU；And adopt
The embodiment of the present invention, delivery turbidity is generally below 2.5NTU.To NO3- N is that the secondary effluent of 12.4mg/L is with the empty bed time
Under the conditions of 15min, processed by the embodiment of the present invention, water outlet NO3- N concentration reaches 4.1mg/L, and clearance reaches 70%.Experiment
Result shows that the present invention has higher denitrification and filtering function.
Above content is to further describe it is impossible to assert with reference to specific preferred implementation is made for the present invention
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, some simple deduction or replace can also be made, all should be considered as belonging to the present invention's
Protection domain.
Claims (4)
1. a kind of sewage denitrification advanced nitrogen processing equipment is it is characterised in that include water inlet system, carbon source dosing system, anti-
Nitrification denitrification reactor and clear water reserviors, described denitrification denitrogenation reactor is from bottom to top or from top to bottom successively at least
Including premix layer, floating stuffing layer, sand filter blanket and clear water layer, described floating stuffing layer carries out denitrification denitrogenation, described sand filter blanket
Carry out denitrification and remove suspended particulate matter in eliminating water, described water inlet system and described carbon source dosing system all connect described pre-
Mixed layer, described clear water layer connects described clear water reserviors；Also include taking off water and/or gas by described denitrification from bottom to top
Analysis are to remove the backwashing system of the suspended particulate matter in reactor；In sewage disposal process, close described anti-
Rinse-system, makes accessing pending water anti-in described denitrification denitrogenation with carbon source by described water inlet system and described carbon source dosing system
Answer the described premix layer mixing of the bottom/top of device, then the denitrification sequentially passing through described floating stuffing layer and described sand filter blanket
Process and described sand filter blanket removes suspended particulate matter in eliminating water, the clear water obtaining enters the described of the top/bottom of reactor
Clear water layer, then drained in described clear water reserviors by described clear water layer；Described backwashing system include by the water in described clear water reserviors to
The backwash pump that bottom to the top of described denitrification denitrogenation reactor conveys, and gas is anti-to described denitrification denitrogenation
Answer the backwash air pump that bottom to the top of device conveys, between described backwash pump and described denitrification denitrogenation reactor, institute
State and be provided with check-valves between backwash air pump and described denitrification denitrogenation reactor, in backwash process, enter described in closing
Water system and described carbon source dosing system, and the outlet position leading to described clear water reserviors in described clear water layer is less than backwash water outlet
Mouthful position in the case of, close described clear water layer and lead to the outlet valve of described clear water reserviors, then by water and/or gas from bottom to
Top removes the suspended particulate matter in reactor by described denitrification denitrogenation reactor；Wherein said sand filter blanket includes propping up
Support layer and the sand filtration bed of material being located on described supporting layer, described supporting layer and the described sand filtration bed of material are respectively 10-20cm thickness, described
The filling rate of floating stuffing layer is less than 70%, is provided with perforate dividing plate between described premix layer and described floating stuffing layer, described
Clear water layer leads to the position less than backwash outlet for the outlet position of described clear water reserviors, and described clear water layer leads to described clear water reserviors
Outlet valve is provided with pipeline.
2. sewage denitrification advanced nitrogen processing equipment as claimed in claim 1 is it is characterised in that described denitrification denitrogenation is anti-
Device is answered to be provided with sample tap columnar structured.
3. a kind of sewage denitrification deepness denitrogenation method for treating, using the sewage denitrification as described in any one of claim 1 to 2
Advanced nitrogen processing equipment, methods described is characterised by, including：
Accessing pending water and carbon source are made in described denitrification denitrogenation reactor by described water inlet system and described carbon source dosing system
Bottom/top the mixing of described premix layer, then sequentially pass through described floating stuffing layer and the denitrification of described sand filter blanket is processed
And described sand filter blanket removes suspended particulate matter in eliminating water, the clear water obtaining enters the described clear water of the top/bottom of reactor
Layer, then drain in described clear water reserviors by described clear water layer,
Wherein at least, according to the nitrate nitrogen concentration of the water inlet detecting and/or water outlet, to adjust the throwing of described carbon source dosing system
Dose flow velocity.
4. a kind of sewage denitrification deepness denitrogenation method for treating, using the sewage denitrification as described in any one of claim 1 to 2
Advanced nitrogen processing equipment, methods described is characterised by, including：
Sewage disposal process, closes described backwashing system, makes to wait to locate by described water inlet system and described carbon source dosing system
The described premix layer of the bottom/top in described denitrification denitrogenation reactor mixes reason water with carbon source, then sequentially passes through described outstanding
The denitrification of floating packing layer and described sand filter blanket is processed and described sand filter blanket removes suspended particulate matter in eliminating water, the clear water obtaining
Enter the described clear water layer of the top/bottom of reactor, then drained in described clear water reserviors by described clear water layer；
Backwash process, closes described water inlet system and described carbon source dosing system, and leads to described clear water reserviors in described clear water layer
Outlet position be less than the position of backwash outlet in the case of, close described clear water layer and lead to the water outlet of described clear water reserviors
Then water and/or gas are removed the suspension reactor from bottom to top by described denitrification denitrogenation reactor by valve
Particulate matter,
Wherein at least controls backwashing period and time according to the loss of flood peak and/or change in flow situation.
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| CN201410091440.2A CN103833131B (en) | 2014-03-12 | 2014-03-12 | Deep sewage denitrification treatment equipment and deep sewage denitrification treatment method |
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| CN103833131B true CN103833131B (en) | 2017-02-15 |
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| CN106647829B (en) * | 2016-12-02 | 2019-07-19 | 江苏川源环保设备有限公司 | A kind of system and method controlling head loss |
| CN106673191A (en) * | 2016-12-23 | 2017-05-17 | 江苏川源环保设备有限公司 | Method and system for releasing gas in denitrification deep bed filter |
| CN107082490A (en) * | 2017-05-05 | 2017-08-22 | 华南理工大学 | The method of its processing sewage of streaming denitrogenation dephosphorizing expanded bed biofilter and application drops |
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| JPH07303896A (en) * | 1994-05-13 | 1995-11-21 | Shimizu Corp | Fixed bed type nitration solution circulating denitrification tank |
| CN2472784Y (en) * | 2001-04-06 | 2002-01-23 | 贵州东伟实业股份有限公司 | Composite filting pool |
| CN101050025A (en) * | 2007-03-30 | 2007-10-10 | 南京大学 | Aeration bio filter in U shaped flow |
| CN101264976A (en) * | 2008-04-28 | 2008-09-17 | 同济大学 | Carbon source supplement anoxic biology filter deep denitrogenation dephosphorization treatment system |
-
2014
- 2014-03-12 CN CN201410091440.2A patent/CN103833131B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07303896A (en) * | 1994-05-13 | 1995-11-21 | Shimizu Corp | Fixed bed type nitration solution circulating denitrification tank |
| CN2472784Y (en) * | 2001-04-06 | 2002-01-23 | 贵州东伟实业股份有限公司 | Composite filting pool |
| CN101050025A (en) * | 2007-03-30 | 2007-10-10 | 南京大学 | Aeration bio filter in U shaped flow |
| CN101264976A (en) * | 2008-04-28 | 2008-09-17 | 同济大学 | Carbon source supplement anoxic biology filter deep denitrogenation dephosphorization treatment system |
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