CN208594099U - A kind of accuracy-control system of BAF biological denitrificaion - Google Patents
A kind of accuracy-control system of BAF biological denitrificaion Download PDFInfo
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- CN208594099U CN208594099U CN201821169994.XU CN201821169994U CN208594099U CN 208594099 U CN208594099 U CN 208594099U CN 201821169994 U CN201821169994 U CN 201821169994U CN 208594099 U CN208594099 U CN 208594099U
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Abstract
The utility model discloses a kind of accuracy-control systems of BAF biological denitrificaion, it successively include ammonification/nitration reaction area, anti-nitration reaction area and organic matter removal area, ammonification/be connected by water hole with water distributor or water inlet pipe between nitration reaction area and anti-nitration reaction area and anti-nitration reaction area and organic matter removal area.The system can accurately control aeration quantity, save aeration；Outlet effect is good, and the removal rate of total nitrogen is better than traditional handicraft up to 95% or more；Backwash is only to need air purge, without washing, and without individually setting up backwash blower；The system can not only guarantee good outlet effect, while also reduce the blocking incidence of filler.
Description
Technical field
The invention belongs to sewage treatment fields, and in particular to a kind of accuracy-control system of BAF biological denitrificaion.
Background technique
As environmental protection is increasingly paid attention in the whole nation from the leadership to the masses, the disposal of pollutants index of various industries is increasingly stringenter.Such as
In April, 2015, " petro chemical industry pollutant emission standard " (GB31571-2015) and " the petroleum refining work of country's publication
Industry pollutant emission standard " (GB31570-2015), comparison and discharge standard before, total nitrogen index, which has also been included in examine, to be referred to
Mark.Newly-built enterprise's total nitrogen emission limit is 40mg/L, and special emission limit is 30mg/L.
At present in sewage treatment process, bio-denitrification technology is still prevailing technology technology, and traditional bio-denitrification technology
It mainly include A/O, oxidation ditch etc., principle is nitrified in aerobic section, and anoxic section denitrification passes through the process combination of nitration denitrification
So that nitrogen is with nitrogen and a small amount of N2The form of the gases such as O is discharged into air, to achieve the purpose that denitrogenation.As current
Widely used oxidation ditch process, aerobic zone and the more difficult reasonable distribution in anoxic zone in ditch, is easy to cause some region inclined
It is less or on the high side, cause operational effect bad, while also more difficult to control to the control of flow velocity, causes treatment effect bad fastly very much, too
Slowly lead to sludge settling, and be easy to appear up and down laminar flow phenomenon, furthermore take up a large area be also oxidation ditch a larger disadvantage；
And A/O technique, (150mg/L or more is thought) in the higher situation of influent concentration, nitric efficiency is general, 80% or so, and
And A/O process requirement nitrification liquid flows back and sludge reflux, increases power consumption.
Currently, in the novel process improved according to traditional handicraft, it is special mainly based on short-cut nitrification and denitrification
Point is that controlling nitration reaction only proceeds to NO2- N the stage causes a large amount of NO2- N accumulation, then carries out denitrification again.The work
The sludge concentration of the skill traditional handicraft that compares wants high, therefore has the small advantage of occupied area, while being also equipped with energy conservation, saving carbon
The characteristics of source dosage.But it is more demanding to operation control, especially dissolved oxygen will be accurately controlled in 0.5mg/L or so, and
The sewage adaptability of (250mg/L or more) higher for ammonia nitrogen concentration is poor.
Summary of the invention
It is directed to deficiency existing for prior art technology, the present invention provides the accuracy-control system of BAF biological denitrificaion,
It is remarkably improved the treatment effect of sewage, especially for the treatment effect of total nitrogen.
For achieving the above object, the present invention provides the following technical scheme that
A kind of accuracy-control system of BAF biological denitrificaion, successively include ammonification/nitration reaction area, anti-nitration reaction area and
Organic matter removal area, ammonification/between nitration reaction area and anti-nitration reaction area and anti-nitration reaction area and organic matter removal area
It is connected by water hole with water distributor or water inlet pipe；It is membrane biological reaction area in the middle part of three reaction zones, it is described
The filler in membrane biological reaction area is macromolecule organic filler, is fixed at least two layers of vertical direction fixed bracket block；
Online ammonia nitrogen detector is equipped in ammonification/nitration reaction pond pond, for detecting NH in water4- N prevents aeration excessively, denitrification
The instantaneous air-blowing program of timing can be arranged in reaction tank, to remove the nitrogen being attached on microorganism and filler, improve microorganism
The efficiency of degradation nitrate nitrogen.The instantaneous air-blowing program is the automatic program by having programmed to control on backwash tracheae
The opening and closing degree of pneumatic operated valve has gas source when pneumatic operated valve is opened and enters in pond by backwash tracheae that (tracheae is not complete at this time
Open, so tolerance can be less than the tolerance that backwash is, and the opening time of pneumatic operated valve is of short duration), atmosphere is utilized with this
It steeps and (comes from backwash tracheae) to remove the nitrogen adhered in biologic packing material area.If will not be attached to the nitrogen in biologic packing material area
Removal, will affect the efficiency of microbial degradation pollutant, because nitrogen can be attached to antimicrobial surface, influence microorganism and pollution
Effective contact of object.
The present invention controls aeration quantity by the detection of ammonia nitrogen, changes tradition using DO instrument measurement control aeration quantity；By setting
Set timing aeration be before General System it is no, the nitrogen in filter media systems can blow out, increase biological respinse efficiency.
Preferably, being equipped with water inlet pipe, lye in ammonification/nitration reaction area leading portion adds pipe, pipe-line mixer, raw water and
Lye adds pipe through lye and is mixed by pipe-line mixer and as water inlet pipe enters buffer area.
Preferably, being additionally provided with cloth sink, water distributor, blow-down pipe, carbon source in the anti-nitration reaction pond adds pipe, backwash
Tracheae, backwash effluent trough and outlet pipe, there are also the water holes for connecting two ponds, wherein the cloth sink is for receiving
The water outlet of ammonification/nitration reaction pond water hole, and given water outlet to this bottom of pond by water distributor.
Preferably, being additionally provided with cloth sink, water distributor, blow-down pipe, backwash tracheae, anti-in the organic matter removal reaction tank
Sink and outlet pipe are washed out, there are also the water holes for connecting two ponds, wherein the cloth sink is used for anti-nitration reaction pond
The water outlet of water hole, and given water outlet to this bottom of pond by water distributor, the effluent trough is used to receive the water outlet of water hole, and
It is sent by outlet pipe to next unit.
Preferably, the anti-nitration reaction area pops one's head in equipped with ORP, for measuring the oxidation-reduction potential in its water.
Preferably, the organic matter removal area is equipped with DO instrument, with the reference index for adjusting aeration quantity.
Preferably, described be additionally provided with an air blower, Aeration fan and backwash blower share a blower.
Compared with prior art, the beneficial effect comprise that (1) accurately controls aeration quantity, aeration is saved, by right
The detection of ammonia nitrogen controls aeration quantity, when ammonia nitrogen is low, existing aeration quantity can be properly increased or maintain, when detection
Ammonia nitrogen value is high, then improves aeration quantity；(2) outlet effect is good, and the removal rate of total nitrogen is better than traditional handicraft up to 95% or more,
It is aerated, can be prevented when aeration quantity is excessive, because if only detection DO, can not know that the ammonia nitrogen in sewage is compared to being controlled with DO
It is no excessive, it can thus waste energy consumption.Control mode can be programmed in PLC program from carrying out in advance；(3) backwash is only to need gas
It washes, without washing, and without individually setting up backwash blower；(4) capacity of resisting impact load is stronger, to C/N ratio and DO require compared with
Traditional handicraft wants low；(5) occupied area is small, integrates biochemical treatment and sedimentation basin effect, without being followed by secondary settling tank；(6) do not have
There is nitrification liquid reflux, has saved power consumption；(7) in the biological denitrificaion processing system can high efficiency synchronous remove COD, total nitrogen,
Water quality reaches the new discharge standard of country after processing；(8) overall process without human intervention, is all run by automation control, when
Operating parameter can automatic alarm beyond setting parameter；The system can not only guarantee good outlet effect, also reduce simultaneously
The blocking incidence of filler.
Detailed description of the invention
Fig. 1 is the accuracy-control system overall structure diagram of BAF biological denitrificaion of the present invention.
Specific embodiment
The present invention is described in more detail below in conjunction with drawings and examples.
Embodiment 1
The accuracy-control system of BAF biological denitrificaion as shown in Figure 1 is equipped with 3 reaction zones altogether, successively are as follows: ammonification/nitrification
Reaction zone, anti-nitration reaction area, organic matter removal area, wherein anti-nitration reaction area is not necessarily to be equipped with aeration tube, and described three anti-
Answering in the middle part of area is membrane biological reaction area, and the filler in the membrane biological reaction area is macromolecule organic filler, forms filler
Area is fixed at least two layers of vertical direction fixed bracket block (24)；Raw water (1) is mixed with lye (3) by lye
Buffer area (22) are entered by pipeline after device (2) mixing, then enter ammonification/nitration reaction area by bottom water hole (23),
Toward upstream, the cloth sink (11) in anti-nitration reaction area is entered by water hole (10) from bottom to top for water flow, then by water distributor (12)
Sewage is guided into bottom of pond, then same ammonification/nitration reaction area is the same again, flows into organic matter removal area from bottom to top, is finally discharged
Into effluent trough (14), there are outlet pipe (21) to introduce next reaction member.
It is equipped with from bottom to top in ammonification/nitration reaction area: blow-down pipe (25), backwash tracheae (16), aeration tube (15), branch
Frame block (24), packing area (7), backwash effluent trough (8), backwash outlet pipe (9)；
It is equipped in anti-nitration reaction area: blow-down pipe (25), backwash tracheae (16), block bracket (24), packing area (7), carbon
Source adds pipe (27), backwash effluent trough (8), backwash outlet pipe (9), and is entered in the latter reaction zone by water hole (10).
Anti-nitration reaction area is equipped with: blow-down pipe (25), backwash tracheae (16), aeration tube (15), bracket block (24), filler
Area (7), carbon source add pipe (27), backwash effluent trough (8), backwash outlet pipe (9), inlet opening (10), effluent collection slot (14), and
A processing unit is flowed to by outlet pipe (21).Aeration motor-driven valve (5) is loaded on aeration supervisor, loads onto backwash on backwash tracheae
Motor-driven valve (6), emptying water pipe load onto emptying motor-driven valve (17), backwash water outlet motor-driven valve (18) are housed on backwash outlet pipe.
The system is additionally provided with an air blower (26), and Aeration fan and backwash blower share a blower.
It is as electronic in loaded onto aeration on aeration supervisor in addition on water inlet manifold and outlet pipe, remaining pipes load onto motor-driven valve
Valve (5) is loaded onto backwash motor-driven valve (6) on backwash tracheae, and emptying water pipe loads onto emptying motor-driven valve (17), is equipped on backwash outlet pipe
Backwash is discharged motor-driven valve (18).
During normal operation, the backwash tracheae motor-driven valve meeting regular brief in denitrification pond is opened for a moment, utilizes backwash
The air pocket that tracheae comes out removes the nitrogen being attached on biomembrane and filler, improves denitrification efficiency.When ammonification/nitrification tank
NH4When-N is lower than 1mg/L, then without reinforcing being aerated.
The instantaneous air-blowing program is the automatic program by having programmed to control the pneumatic operated valve on backwash tracheae
Opening and closing degree has gas source when pneumatic operated valve is opened and enters in pond by backwash tracheae that (tracheae is not completely open at this time, institute
With the tolerance that tolerance can be less than backwash, and the opening time of pneumatic operated valve is of short duration), with this using air pocket (come reflexive
Scrubber tube) come remove in biologic packing material area adhere to nitrogen.It, can shadow if the nitrogen being attached in biologic packing material area not removed
The efficiency for ringing microbial degradation pollutant influences the effective of microorganism and pollutant because nitrogen can be attached to antimicrobial surface
Contact.
The workflow of biological denitrificaion processing system of the invention is:
A, in the ammonification/nitration reaction area:
Sewage and lye mix latter with entering in pond in lye mixer, and sewage passes through membrane biological reaction from bottom to top
Ammonification, nitration reaction occur in film reaction area for area, convert ammonia nitrogen for organic nitrogen, and be nitrate nitrogen by mineralized nitrogen, simultaneously
It can achieve the effect of removal organic matter.
B, in the anti-nitration reaction area:
Sewage enters cloth sink through water hole by a upper reaction zone, while a certain amount of carbon source being added in cloth sink, mixes
Sewage is introduced into bottom of pond by water distributor after conjunction, then passes through film reaction area from bottom to top, is sent out in film reaction area using denitrifying bacterium
Raw anti-nitration reaction, converts nitrogen for nitrate nitrogen.
C, in the organic matter removal reaction zone:
Denitrification water outlet enters the cloth sink in organic matter removal area, then the cloth by being connected with cloth sink by water hole
Sewage is introduced into bottom of pond by water pipe, and sewage passes through membrane biological reaction area from bottom to top, using being attached to the aerobic different of filler surface
Bacteria will contain organic matter removal in sewage, it is ensured that water outlet COD is up to standard.
The backwash step sequence of each processing unit is as follows: the motor-driven valve (18) being first turned on backwash drainpipe, and 3~5
Backwash motor-driven valve (5) are opened after minute, using 8~after ten minutes by backwash motor-driven valve (5) closing, it opens blow valve (17), 2
It is closed after minute, using 15~motor-driven valve (18) on backwash drainpipe is closed after twenty minutes, biomembrane backwash terminates.
Sewage is can qualified discharge after the processing of 3 reaction tanks.
When implementing, aeration quantity can be adjusted flexibly according to on-site actual situations to reach processing effect in above three reaction tank
Fruit, if also installing aeration tube in denitrification zone, 3 ponds can be flexible and be easily switched between anoxic aerobic, with this
Meet live actual production demand.
Above technical scheme is only that preferred embodiment of the invention is described, and is not departing from design spirit of the present invention
Under the premise of, the various changes and improvements that this field ordinary engineering and technical personnel makes technical solution of the present invention should all be fallen into
In the protection scope that claims of the present invention determines.
Claims (6)
1. a kind of accuracy-control system of BAF biological denitrificaion, it is characterised in that successively include ammonification/nitration reaction area, denitrification
Reaction zone and organic matter removal area, ammonification/nitration reaction area and anti-nitration reaction area and anti-nitration reaction area and organic matter are gone
Except being connected by water hole with water distributor or water inlet pipe between area；It is membrane biological reaction in the middle part of three reaction zones
Area, the filler in the membrane biological reaction area are macromolecule organic filler, the vertical direction at least two in membrane biological reaction area
The fixed bracket block of layer is fixed；Online ammonia nitrogen detector is equipped in ammonification/nitration reaction pond pond, anti-nitration reaction is set in pond
It is equipped with the instantaneous air-blowing program of timing.
2. the accuracy-control system of BAF biological denitrificaion according to claim 1, it is characterised in that in ammonification/nitration reaction
Area's leading portion is equipped with water inlet pipe, lye adds pipe and pipe-line mixer, and raw water and lye add pipe through lye and passes through pipe-line mixer
It mixes and as water inlet pipe enters buffer area.
3. the accuracy-control system of BAF biological denitrificaion according to claim 1, it is characterised in that the anti-nitration reaction area
It is inside additionally provided with cloth sink, water distributor, blow-down pipe, carbon source and adds pipe, backwash tracheae, backwash effluent trough and outlet pipe, be also used for
The water hole in two ponds is connected, the cloth sink passes through water distribution for receiving the water outlet of ammonification/nitration reaction area water hole
Pipe send water outlet to local area bottom.
4. the accuracy-control system of BAF biological denitrificaion according to claim 1, it is characterised in that the organic matter removal is anti-
It answers and is additionally provided with cloth sink, water distributor, blow-down pipe, backwash tracheae, backwash effluent trough and outlet pipe in area, there are also for connecting two
The water hole in pond, wherein the cloth sink is used for the water outlet of anti-nitration reaction area water hole, and is sent water outlet by water distributor
To local area bottom, the effluent trough is used to receive the water outlet of water hole, and is sent by outlet pipe to next unit.
5. the accuracy-control system of BAF biological denitrificaion according to claim 1, it is characterised in that anti-nitration reaction area is equipped with
ORP probe, for measuring the oxidation-reduction potential in its water.
6. the accuracy-control system of BAF biological denitrificaion according to claim 1, it is characterised in that organic matter removal area is equipped with
DO instrument, with the reference index for adjusting aeration quantity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821169994.XU CN208594099U (en) | 2018-07-23 | 2018-07-23 | A kind of accuracy-control system of BAF biological denitrificaion |
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| CN201821169994.XU CN208594099U (en) | 2018-07-23 | 2018-07-23 | A kind of accuracy-control system of BAF biological denitrificaion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482686A (en) * | 2019-03-26 | 2019-11-22 | 浙江海牛环境科技股份有限公司 | A kind of system and method proposing effect suitable for the consumption reduction of oxidation ditch biological denitrification |
| CN113135616A (en) * | 2020-01-17 | 2021-07-20 | 北京弘昇达环境科技有限公司 | Composite denitrification biological pond |
| CN113955907A (en) * | 2021-12-22 | 2022-01-21 | 广东新泰隆环保集团有限公司 | Integrated sewage treatment equipment capable of efficiently degrading |
-
2018
- 2018-07-23 CN CN201821169994.XU patent/CN208594099U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482686A (en) * | 2019-03-26 | 2019-11-22 | 浙江海牛环境科技股份有限公司 | A kind of system and method proposing effect suitable for the consumption reduction of oxidation ditch biological denitrification |
| CN110482686B (en) * | 2019-03-26 | 2023-12-12 | 浙江海牛环境科技股份有限公司 | Consumption-reducing and efficiency-improving system and method suitable for biological denitrification of oxidation ditch |
| CN113135616A (en) * | 2020-01-17 | 2021-07-20 | 北京弘昇达环境科技有限公司 | Composite denitrification biological pond |
| CN113955907A (en) * | 2021-12-22 | 2022-01-21 | 广东新泰隆环保集团有限公司 | Integrated sewage treatment equipment capable of efficiently degrading |
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Denomination of utility model: An accurate control system for BAF biological denitrification Effective date of registration: 20220322 Granted publication date: 20190312 Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd. Pledgor: ZHEJIANG HINEW ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Registration number: Y2022990000155 |
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Date of cancellation: 20230131 Granted publication date: 20190312 Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd. Pledgor: ZHEJIANG HINEW ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Registration number: Y2022990000155 |