CN110255711A - A kind of the denitrification denitrogenation processing unit and method of fast and low-cost - Google Patents
A kind of the denitrification denitrogenation processing unit and method of fast and low-cost Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/28—Anaerobic digestion processes
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/00—Nature of the contaminant
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The invention discloses the denitrification denitrogenation processing units and method of a kind of fast and low-cost, belong to field of waste water treatment, described device includes online monitoring unit, water inlet regulation and Adding medicine control unit, heterotrophic denitrification denitrogenation unit and autotrophic denitrification denitrogenation unit, the heterotrophic denitrification denitrogenation unit water outlet is connected with the water inlet end of autotrophic denitrification denitrogenation unit, the on-line monitoring unit is for monitoring influent quality, and result feedback is regulated and controled and Adding medicine control unit to water inlet, the flow of inlet water ratio of the water inlet regulation and Adding medicine control unit control heterotrophic denitrification denitrogenation unit and autotrophic denitrification denitrogenation unit.The range that the device of the invention and wastewater treatment method greatly strengthen the anti-load impact ability of system, increase tolerance waste water quality fluctuation, improves denitrogenation of waste water treatment effeciency, reduces operating cost.
Description
Technical field
The invention belongs to field of waste water treatment, be specifically related to a kind of fast and low-cost denitrification denitrogenation processing unit and
Method.
Background technique
In recent years, with industrialized fast development, the discharge amount of industrial nitrogenous effluent is continuously increased.Because of nitrate pollution
The healthy hidden dangers such as teratogenesis, carcinogenic, mutagenesis can be brought to the mankind, nitrate pollution controls to have obtained the attention of more people.How to open
Issuing the polluted by nitrogen in economic, efficient removal water body becomes the hot and difficult issue of field of water pollution control.Nitrogenous effluent at present
Processing technique include traditional denitrogenation technology and novel denitrogenation technology, traditional denitrogenation technology includes absorption method, catalytic oxidation, super
The physico-chemical process such as critical water oxidation and A/A/O, oxidation ditch, SBR, biological rotating disk etc..New biological nitrogen removal technology includes anaerobism ammonia
Oxidation, short-cut nitrification and denitrification, immobilization technology, synchronous nitration and denitrification etc..Wherein biological denitrification method with its simple process,
The low feature of operating cost is widely used in nitrogenous effluent treatment, as microbial technique in recent years is in terms of engineer application
It the problem of development, many researchers are directed to existing biological denitrification process, is reformed, is taken on process form and process
Obtained certain effect.Biological denitrification processing technique is to make NO by microorganism denitrification3- N is eventually converted into N2O or
N2Process.The difference that carbon source is utilized according to microorganism, can be divided into heterotrophic organism denitrogenation and denitrification of autotrophic organism again.
Heterotrophic organism denitrogenation technology is the matrix for relying on foreign organisms and making denitrification, and heterotroph biological denitrification is made
It is affected used in will receive environment when carrying out denitrification, such as carbon source is insufficient, influences denitrification denitrogenation under winter low temperature environment
Efficiency, cause be discharged total nitrogen it is unstable, if supplementing a certain amount of carbon source, there is the risk of secondary pollution and increase operation at
This.
Sludge quantity is few in autotrophic denitrification biological denitrification process, does not need additionally to add organic carbon source, this method economy,
It is simply a kind of ideal denitrifying method；If but encountering the larger, C/N into the fluctuation of water nitrate and increasing suddenly
When, autotrophic denitrification microbiological treatment effect can be caused to decline, meanwhile, the autotrophic denitrification microorganism speed of growth is slower, can bring de-
The problems such as nitrogen is not thorough and the denitrification system recovery period is long.In order to improve the nitric efficiency of autotrophic denitrification, Chinese patent Shen
Please number CN201810314967.5, publication date is that on 08 31st, 2018 application cases disclose a kind of autotrophic denitrification depth
Nitrogen rejection facility and autotrophy deep denitrification method load floating stuffing on sulphur filler top, and floating stuffing can be floated downward with waterborne
It is dynamic, it prevents sulphur filler in lower part from being washed out system, makes processing bed be in swelling state by control water inlet flow velocity, so that
Bed resistance reduces, and reaction site increases, and improves nitric efficiency.The method of this application can be improved nitric efficiency, however
Water treatment effect high for processing load, that variation water quality is big is also difficult to keep stable treatment effeciency.
All there is respective advantage and disadvantage, the stable denitrification of research and development economical and efficient based on two kinds of denitrification denitrogenation technologies
Bio-denitrification technology, it has also become the technical need that nitrogenous effluent treatment field is badly in need of, to solution nitrogenous effluent treatment technical problem
Have great importance and is worth.
Defect based on the prior art, it is a kind of can adapt to different quality to need to invent, strong quick low of anti-impact force
The denitrogenation processing system of cost.
Summary of the invention
1. to solve the problems, such as
Existing influent quality is overcome to fluctuate larger bring denitrogenation processing low efficiency, effluent quality unstable and existing de-
The high problem of nitrogen system operating cost, the present invention is according to influent quality situation, to entering autotrophic denitrification and heterotrophic denitrification
Waste water ratio carries out Effective Regulation, and according to the selection of practical water quality, suitable denitrification is handled, and guarantees to go while cost is reduced
Except efficiency, method of the invention can adapt to different C/N than water quality, and anti-system shock power is strong, stable effluent quality, nitric efficiency
Height, operating cost are lower.
2. technical solution
To solve the above-mentioned problems, the technical solution adopted in the present invention is as follows:
The present invention provides a kind of denitrification denitrogenation processing units of fast and low-cost, including online monitoring unit, water inlet
Regulation and Adding medicine control unit, heterotrophic denitrification denitrogenation unit and autotrophic denitrification denitrogenation unit, the heterotrophic denitrification denitrogenation
Unit water outlet is connected with the water inlet end of autotrophic denitrification denitrogenation unit, and the on-line monitoring unit is for monitoring water inlet water
Matter, and by result feedback to water inlet regulation and Adding medicine control unit, the water inlet regulation and Adding medicine control unit control heterotrophism are anti-
Nitrify the flow of inlet water ratio of denitrogenation unit and autotrophic denitrification denitrogenation unit.
As further improvement of the present invention, the water inlet regulation controls heterotrophic denitrification with Adding medicine control unit simultaneously
The added amount of chemical of denitrogenation unit.
As further improvement of the present invention, water inlet regulation and Adding medicine control unit include water inlet adjusting device and
Medicine machine, the water inlet adjusting device include ball valve, intake pump, the first motor-driven valve and the second motor-driven valve, first electricity
Dynamic valve is set to the pipeline between intake pump and heterotrophic denitrification denitrogenation unit, and second motor-driven valve is set to intake pump and oneself
Support the pipeline between denitrification denitrogenation unit.
The ball valve is arranged in the pipeline between conditioning tank and intake pump, the ball valve for realizing opening and closing pipeline into
The valve of water outlet is in normally open when normal operation；The intake pump is for transport wastewater into reactor；First is electronic
Valve is used to control the flow of waste water heterotrophic denitrification denitrogenation unit, and the second motor-driven valve is for controlling waste water autotrophic denitrification denitrogenation list
The flow of member.
As further improvement of the present invention, the medicine machine includes medicine-adding bin, dosing pump, first flowmeter and
One check-valves, the first flowmeter and first check-valve are set to the pipe between dosing pump and heterotrophic denitrification denitrogenation unit
Road.
The dosing pump is arranged between medicine-adding bin and heterotrophic denitrification denitrogenation unit, and the first flowmeter is used for
Control dosing flow；The first check-valve is for preventing waste water from flowing backwards.
As further improvement of the present invention, the on-line monitoring unit includes online pH meter, online NO3 -Monitor and
Online COD monitor.
The heterotrophic denitrification denitrogenation unit is followed successively by water distribution area, reaction zone and sloping plate deposition district, reactor from bottom to top
Water outlet can diameter flow to autotrophic denitrification denitrogenation unit.
As further improvement of the present invention, the compounded mix conversion zone bottom of the autotrophic denitrification denitrogenation unit is set
Set supporting layer.The supporting layer also has certain effect for preventing filtrate to be lost from system, while to uniform water inlet.
As further improvement of the present invention, the heterotrophic denitrification denitrogenation unit and autotrophic denitrification denitrogenation unit
Volumetric ratio is 1:(4~10).
The present invention provides a kind of denitrification denitrogenation processing methods, comprising the following steps:
A) after waste water enters system, on-line monitoring unit detects water quality, will test numeric feedback and regulates and controls to water inlet
With control system for adding drugs；
B) the water inlet regulation enters heterotrophic denitrification denitrogenation unit and the anti-nitre of autotrophy with control system for adding drugs control waste water
Change the flow proportional of denitrogenation unit.
As further improvement of the present invention, it is as follows that the water inlet regulation specifically regulates and controls method with control system for adding drugs:
(1) in influent quality when C/N > 3, waste water fully enters heterotrophic denitrification denitrogenation cell processing, and water outlet enters autotrophy
Denitrification denitrogenation cell processing；
(2) in influent quality when C/N≤3, NO3 -When concentration < 200mg/L, the heterotrophic denitrification denitrogenation unit and autotrophy
Denitrification denitrogenation unit influent flow rate distribution ratio example is 1:(5~8), while the water outlet of heterotrophic denitrification denitrogenation cell processing enters certainly
Support denitrification denitrogenation cell processing；
(3) in influent quality when C/N≤3, NO3 -When concentration >=200mg/L, the heterotrophic denitrification denitrogenation unit and autotrophy
Denitrification denitrogenation unit influent flow rate distribution ratio example is (2~10): 1, while the water outlet of heterotrophic denitrification denitrogenation cell processing enters
Autotrophic denitrification denitrogenation cell processing.
As further improvement of the present invention, the carbon source dosage of the autotrophic denitrification denitrogenation unit is according to C/N=1
~4 add.
3. beneficial effect
Compared with the prior art, the invention has the benefit that
(1) the denitrification denitrogenation processing unit of fast and low-cost of the invention, by heterotrophism and autotrophic denitrification denitrogenation processing
Cascade System and setting regulator control system, targetedly according to C/N ratio and the COD concentration of intaking, adjustment heterotrophism and the anti-nitre of autotrophy
The flow of inlet water for changing denitrogenation processing selects suitable denitrification system as main denitrification process as needed, it is dense to can avoid waste water
It is unstable to spend height, the larger brought wastewater denitrification system of C/N fluctuation, causes denitrogenation to be not thorough, method of the invention can
Enough guarantee waste water high-efficiency denitrogenation processing efficiency, processing is highly efficient, while reducing operating cost.
(2) the denitrification denitrogenation processing unit of fast and low-cost of the invention, using heterotrophic denitrification denitrogenation+anti-nitre of autotrophy
Change denitrogenation tandem process, heterotrophism denitrification process is placed on front end, can comparatively fast eliminate in water inlet and carry higher DO concentration to subsequent
The influence of autotrophic denitrification technique, while the basicity of autotrophic denitrification system can be effectively supplemented.In heterotrophic denitrification denitrification process, also
Former 1g nitrate nitrogen generates about 3.57g basicity at nitrogen, since autotrophic denitrification optimal pH is alkaline condition, in Practical Project
Calcium carbonate is often added and supplements basicity；The basicity generated in heterotrophic denitrification denitrification process is used in autotrophy by method of the invention
Denitrification denitrogenation process improves sewage water denitrification treatment effect, effectively save cost.
(3) the denitrification denitrogenation processing method of fast and low-cost of the invention, regulator control system make C/N higher in influent quality
When, control waste water first carries out heterotrophic denitrification and enters back into autotrophic denitrification processing, and the organic concentration for efficiently using waste water is high, no
The characteristics of needing the characteristics of adding carbon source, while not generated using autotrophic denitrification sludge is utilized the two series connection processing, effectively saved
About cost, when C/N is lower in influent quality, judged according to the concentration of nitrate nitrogen be with heterotrophic denitrification or autotrophic denitrification
It is main, while autotrophic denitrification processing is entered back into after heterotrophic denitrification processing, the characteristics of which efficiently uses influent quality,
The operation of flexible modulation reaction, guarantees high treatment efficiency, greatlys save operating cost.
(4) the denitrification denitrogenation processing method of fast and low-cost of the invention, in influent quality when C/N≤3, treatment process
In both included that process using suitable denitrification system as main denitrification process is selected by regulation processing flow, include simultaneously
Heterotrophism+autotrophy treatment process, on the basis of guaranteeing stable effluent quality, save the cost to the full extent.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the denitrification denitrogenation processing system of fast and low-cost of the present invention.
In figure: 1, conditioning tank；2, unit is monitored on-line；3, heterotrophic denitrification denitrogenation unit；4, autotrophic denitrification denitrogenation list
Member；5, ball valve；6, intake pump；7, the first motor-driven valve；8, the second motor-driven valve；9, medicine-adding bin；10, dosing pump；11, first flow
Meter；12, first check-valve；13, second flowmeter；14, second check-valve；15, third flowmeter；16, third check-valves；301,
Sloping plate deposition district；302, water distribution area；303, heterotrophic denitrification denitrogenation unit water outlet；401, supporting layer；402, autotrophic denitrification
Reactor water outlet.
Specific embodiment
The present invention is further described below combined with specific embodiments below.
Embodiment 1
A kind of denitrification denitrogenation processing unit of fast and low-cost of the present embodiment, including online monitoring unit 2, water inlet regulation
With Adding medicine control unit, heterotrophic denitrification denitrogenation unit 3 and autotrophic denitrification denitrogenation unit 4, the heterotrophic denitrification denitrogenation list
First water outlet 303 is connected with the water inlet end of autotrophic denitrification denitrogenation unit 4, and the on-line monitoring unit 2 is for monitoring water inlet
Water quality, and by result feedback to water inlet regulation and Adding medicine control unit, the water inlet regulation controls heterotrophism with Adding medicine control unit
The flow of inlet water ratio of denitrification denitrogenation unit 3 and autotrophic denitrification denitrogenation unit 4.
As shown in Figure 1, described device further includes conditioning tank 1, it is described include online monitoring unit 2 include online pH meter,
Line NO3 -Monitor and online COD monitor equipment, the on-line monitoring unit 2 are set to conditioning tank 1, for monitoring water inlet
Water quality.
The water inlet regulation includes water inlet adjusting device and medicine machine with Adding medicine control unit, and the water inlet regulation is set
Standby includes ball valve 5, intake pump 6, the first motor-driven valve 7 and the second motor-driven valve 8, first motor-driven valve 7 be set to intake pump 6 with it is different
The pipeline between denitrification denitrogenation unit 3 is supported, second motor-driven valve 8 is set to intake pump 6 and autotrophic denitrification denitrogenation unit 4
Between pipeline.
The volumetric ratio of the heterotrophic denitrification denitrogenation unit 3 and autotrophic denitrification denitrogenation unit 4 is 1:(4~10).
The pipeline between conditioning tank 1 and intake pump 6 is arranged in the ball valve 5, and the ball valve 5 is for realizing opening and closing pipe
One valve of road Inlet and outlet water is in normally open when normal operation；The intake pump 6 is for transport wastewater to reactor
In；First motor-driven valve 7 is used to control the flow of waste water heterotrophic denitrification denitrogenation unit 3, and the second motor-driven valve 8 is for controlling waste water certainly
Support the flow of denitrification denitrogenation unit 4.
Pipeline between the intake pump 6 and heterotrophic denitrification denitrogenation unit 3, which also sets up second flowmeter 13 and second, to be stopped
Valve 14 is returned, the pipeline between the intake pump 6 and autotrophic denitrification denitrogenation unit 4 is additionally provided with third flowmeter 15 and third is stopped
Return valve 16.Flowmeter is set for more accurate control flow, while check-valves is set for preventing waste water from flowing backwards.
The water inlet regulation controls the medicine of heterotrophic denitrification denitrogenation unit 3 with Adding medicine control unit simultaneously by medicine machine
Agent dosage, the medicine machine include medicine-adding bin 9, dosing pump 10, first flowmeter 11 and first check-valve 12, and described first
Flowmeter 11 and first check-valve 12 are set to the pipeline between dosing pump 10 and heterotrophic denitrification denitrogenation unit 3.
The dosing pump 10 is arranged between medicine-adding bin 9 and heterotrophic denitrification denitrogenation unit 3, the first flowmeter
11 for controlling dosing flow；The first check-valve 12 is for preventing waste water from flowing backwards.
The heterotrophic denitrification denitrogenation unit is followed successively by water distribution area 302, reaction zone and sloping plate deposition district 301 from bottom to top,
Reactor water outlet can diameter flow to autotrophic denitrification denitrogenation unit 4.
Supporting layer 401, the supporting layer is arranged in the compounded mix conversion zone bottom of the autotrophic denitrification denitrogenation unit 4
401 for preventing filtrate to be lost from system, while also having certain effect to uniform water inlet, and wastewater treatment is completed by the anti-nitre of autotrophy
Change reactor water outlet 402 to discharge.
The device carrying out practically method of the present embodiment is as follows:
(1) in influent quality when C/N > 3, waste water fully enters 3 cell processing of heterotrophic denitrification denitrogenation, and water outlet enters certainly
Denitrification denitrogenation unit 4 is supported to handle；
(2) in influent quality when C/N≤3, NO3 -When concentration < 200mg/L, the heterotrophic denitrification denitrogenation unit 3 with from
Supporting 4 influent flow rate distribution ratio example of denitrification denitrogenation unit is 1:(5~8), denitrification process is controlled with autotrophic denitrification denitrification system
Based on, supplemented by heterotrophic denitrification denitrification treatment process, while the processing water outlet of heterotrophic denitrification denitrogenation unit 3 enters autotrophic denitrification
The processing of denitrogenation unit 4；
(3) in influent quality when C/N≤3, NO3 -When concentration >=200mg/L, the heterotrophic denitrification denitrogenation unit 3 with from
Supporting 4 influent flow rate distribution ratio example of denitrification denitrogenation unit is (2~10): 1, denitrification process is controlled with heterotrophic denitrification denitrification system
Based on, supplemented by autotrophic denitrification denitrification treatment process, while the processing water outlet of heterotrophic denitrification denitrogenation unit 3 enters autotrophic denitrification
The processing of denitrogenation unit 4.
Embodiment 2
Certain industrial production waste-water treatment project containing nitre, variation water quality is larger, water 1200m3/ d, using embodiment 1
Device is handled, and monitors NO using on-line monitoring unit 23 -Mean concentration is 115mg/L, water inlet C/N < 3, and COD concentration is flat
Mean value is 116mg/L.
Using water inlet regulation and Adding medicine control unit regulating denitrification process based on autotrophic denitrification denitrification system, heterotrophism is anti-
It nitrifies supplemented by denitrification treatment process, the heterotrophic denitrification denitrogenation unit 3 and 4 influent flow distribution of autotrophic denitrification denitrogenation unit
Ratio is 1:5, while the processing water outlet of heterotrophic denitrification denitrogenation unit 3 enters autotrophic denitrification denitrogenation unit 4 and handles；The anti-nitre of heterotrophism
Change denitrification reaction pond and adds sodium acetate according to C/N=2.
Processing result: the denitrification system effluent COD concentration < 40mg/L, NO3 -Concentration < 2mg/L, total nitrogen concentration < 15mg/
L, operational effect are stablized, and total nitrogen stably reaches first discharge standard requirement, and the sodium acetate total amount added is 40kg/d.
Comparative example a: heterotrophic denitrification denitrification process is used, for the Industrial Wastewater Treatment, heterotrophic denitrification is according to C/N=
2 ratio adds sodium acetate, processing result are as follows: effluent COD concentration < 80mg/L, NO3 -Concentration < 15mg/L, total nitrogen concentration <
40mg/L, the sodium acetate total amount added are 630kg/d.
Comparative example b: using heterotrophism+autotrophic denitrification denitrification process, for the Industrial Wastewater Treatment, heterotrophic denitrification according to
The ratio of C/N=2 adds sodium acetate, processing result are as follows: effluent COD concentration < 50mg/L, NO3 -Concentration < 2.5mg/L, total nitrogen are dense
< 18mg/L is spent, the sodium acetate total amount added is 520kg/d.
Embodiment 3
Certain industrial production waste-water treatment project containing nitre, variation water quality is larger, water 1000m3/ d, using embodiment 1
Device is handled, and monitors NO using on-line monitoring unit 23 -Mean concentration is 60mg/L, water inlet C/N=3, and COD concentration is flat
Mean value is 180mg/L.
Using water inlet regulation and Adding medicine control unit regulating denitrification process based on autotrophic denitrification denitrification system, heterotrophism is anti-
It nitrifies supplemented by denitrification treatment process, the influent waste water flow point of heterotrophic denitrification denitrogenation unit 3 and autotrophic denitrification denitrogenation unit 4
It is 1:8 with ratio, while the processing water outlet of heterotrophic denitrification denitrogenation unit 3 enters autotrophic denitrification denitrogenation unit 4 and handles；Heterotrophism is anti-
Nitrification 3 extraneous acetic acid sodium carbon source of denitrogenation unit is added according to C/N=4；
The denitrification system effluent COD concentration < 40mg/L, NO3 -Concentration < 1mg/L, total nitrogen concentration < 15mg/L, operation effect
Fruit is stablized, and total nitrogen stably reaches first discharge standard requirement.
Embodiment 4
Certain industrial production waste-water treatment project containing nitre, variation water quality is larger, water 1000m3/ d, using embodiment 1
Device is handled, and monitors NO using on-line monitoring unit 23 -Mean concentration is 200mg/L, water inlet C/N < 3, and COD concentration is flat
Mean value is 150mg/L.
It is different using water inlet regulation and Adding medicine control unit regulating wastewater denitrification process based on autotrophic denitrification denitrification system
It supports supplemented by denitrification denitrogenation treatment process, the influent waste water stream of heterotrophic denitrification denitrogenation unit 3 and autotrophic denitrification denitrogenation unit 4
Amount allocation proportion is 1:6, while the processing water outlet of heterotrophic denitrification denitrogenation unit 3 enters autotrophic denitrification denitrogenation unit 4 and handles；It is different
3 extraneous acetic acid sodium carbon source of denitrification denitrogenation unit is supported to add according to C/N=1；
The denitrification system effluent COD concentration < 45mg/L, NO3 -Concentration < 1.5mg/L, total nitrogen concentration < 15mg/L, operation
Effect stability, total nitrogen stably reach first discharge standard requirement.
Embodiment 5
Certain industrial production waste-water treatment project containing nitre, variation water quality is larger, water 1500m3/ d, using embodiment 1
Device is handled, and monitors NO using on-line monitoring unit 23 -Mean concentration is 160mg/L, C/N > 3 of intaking, and COD concentration is flat
Mean value is 680mg/L.
Heterotrophic denitrification denitrogenation unit 3 is fully entered with Adding medicine control unit regulating waste water using water inlet regulation, is handled out
Water enters the processing of autotrophic denitrification denitrogenation unit 4；3 extraneous acetic acid sodium carbon source of heterotrophic denitrification denitrogenation unit is thrown according to C/N=2
Add.
Processing result: COD concentration 30~42mg/L, NO3 -N concentration < 1mg/L, 9~14mg/L of total nitrogen concentration, operational effect
Stablize, total nitrogen stably reaches first discharge standard requirement, adds sodium acetate 200kg/d.
Comparative example c: using heterotrophic denitrification denitrification process, for the Industrial Wastewater Treatment, throws according to the ratio of C/N=2
Add sodium acetate, processing result are as follows: effluent COD concentration < 50mg/L, NO3 -Concentration < 10mg/L, total nitrogen concentration < 30mg/L, adds
Sodium acetate total amount be 480kg/d.
Embodiment 6
Certain industrial production waste-water treatment project containing nitre, variation water quality is larger, water 600m3/ d, using the dress of embodiment 1
It sets and is handled, NO is monitored using on-line monitoring unit 23 -Mean concentration is 200mg/L, C/N=3, and COD mean concentration is
600mg/L。
Using water inlet regulation and Adding medicine control unit regulating denitrification process based on heterotrophic denitrification denitrogenation, autotrophic denitrification
Supplemented by denitrogenation, the heterotrophic denitrification denitrogenation unit 3 is 2:1 with 4 influent flow rate distribution ratio example of autotrophic denitrification denitrogenation unit, together
When heterotrophic denitrification denitrogenation unit 3 be discharged and enter autotrophic denitrification denitrogenation unit 4 and handle；Heterotrophic denitrification denitrification reaction pond is additional
Carbon source is added according to C/N=1.
The denitrification system effluent COD concentration 35~50mg/L, NO3 -0.7~1.5mg/L of concentration, total nitrogen concentration 10~
13.9mg/L, operational effect are stablized, and total nitrogen stably reaches first discharge standard requirement.In treatment process, heterotrophic denitrification denitrogenation
Wastewater treatment capacity is 400m3/ d, adding carbon source amount is 80kg/d, and autotrophic denitrification denitrogenation wastewater treatment capacity is 200m3/ d, is not necessarily to
Add carbon source.
Comparative example d: being directed to the industrial wastewater, is handled using heterotrophic denitrification denitrification process, throws according to the ratio of C/N=1
Add sodium acetate, processing result are as follows: effluent COD concentration < 55mg/L, NO3 -Concentration < 2mg/L, total nitrogen concentration < 30mg/L, adds
Sodium acetate total amount be 360kg/d.
Comparative example e: being directed to the industrial wastewater, using the processing of heterotrophism+autotrophic denitrification denitrification process, heterotrophic denitrification according to
The ratio of C/N=1 adds sodium acetate, processing result are as follows: effluent COD concentration < 40mg/L, NO3 -Concentration < 2mg/L, total nitrogen concentration
< 15mg/L, the sodium acetate total amount added are 360kg/d.
Embodiment 7
Certain industrial production waste-water treatment project containing nitre, variation water quality is larger, water 1600m3/ d, using embodiment 1
Device is handled, and monitors NO using on-line monitoring unit 23 -Mean concentration is 950mg/L, C/N < 3, COD mean concentration
For 1000mg/L.
Denitrification process is based on heterotrophic denitrification denitrogenation, supplemented by autotrophic denitrification denitrogenation, heterotrophic denitrification system and autotrophy
The influent flow rate distribution ratio example of denilrification system is 10:1, while the water outlet of heterotrophic denitrification denitrogenation unit 3 enters autotrophic denitrification
The processing of denitrogenation unit 4, heterotrophic denitrification denitrification reaction pond additional carbon are added according to C/N=1.
The denitrification system effluent COD concentration < 45mg/L, NO3 -Concentration < 1.1mg/L, 6.2~12.9mg/L of total nitrogen concentration,
Operational effect is stablized, and total nitrogen stably reaches the requirement of level-one emission standard A.
Embodiment 8
Certain industrial production waste-water treatment project containing nitre, variation water quality is larger, water 1600m3/ d, using embodiment 1
Device is handled, and monitors NO using on-line monitoring unit 23 -Concentration 950mg/L, C/N < 3, COD mean concentration are 560mg/
L。
Control denitrification process based on heterotrophic denitrification denitrogenation, supplemented by autotrophic denitrification denitrogenation, heterotrophic denitrification system with
The influent flow rate distribution ratio example of autotrophic denitrification system is 8:1, while the water outlet of heterotrophic denitrification denitrogenation unit 3 enters the anti-nitre of autotrophy
Change denitrogenation unit 4 to handle, 3 additional carbon of heterotrophic denitrification denitrogenation unit is added according to C/N=4.
The denitrification system effluent COD concentration < 45mg/L, NO3 -Concentration < 1.1mg/L, 6.2~12.9mg/L of total nitrogen concentration,
Operational effect is stablized, and total nitrogen stably reaches the requirement of level-one emission standard A.
Claims (10)
1. a kind of denitrification denitrogenation processing unit of fast and low-cost, it is characterised in that: including online monitoring unit (2), water inlet
Regulation and Adding medicine control unit, heterotrophic denitrification denitrogenation unit (3) and autotrophic denitrification denitrogenation unit (4), the anti-nitre of heterotrophism
Change denitrogenation unit water outlet (303) to be connected with the water inlet end of autotrophic denitrification denitrogenation unit (4), the on-line monitoring unit is used
Regulate and control and Adding medicine control unit, the water inlet regulation and Adding medicine control list in monitoring influent quality, and by result feedback to water inlet
The flow of inlet water ratio of member control heterotrophic denitrification denitrogenation unit (3) and autotrophic denitrification denitrogenation unit (4).
2. the denitrification denitrogenation processing unit of fast and low-cost according to claim 1, it is characterised in that: the water inlet is adjusted
Control controls the added amount of chemical of heterotrophic denitrification denitrogenation unit (3) with Adding medicine control unit simultaneously.
3. the denitrification denitrogenation processing unit of fast and low-cost according to claim 2, it is characterised in that: the water inlet is adjusted
Control includes water inlet adjusting device and medicine machine with Adding medicine control unit, and the water inlet adjusting device includes ball valve (5), water inlet
Pump (6), the first motor-driven valve (7) and the second motor-driven valve (8), first motor-driven valve (7) are set to intake pump (6) and the anti-nitre of heterotrophism
Change the pipeline between denitrogenation unit (3), second motor-driven valve (8) is set to intake pump (6) and autotrophic denitrification denitrogenation list
Pipeline between first (4).
4. the denitrification denitrogenation processing unit of fast and low-cost according to claim 3, it is characterised in that: the dosing is set
Standby includes medicine-adding bin (9), dosing pump (10), first flowmeter (11) and first check-valve (12), the first flowmeter (11)
And first check-valve (12) is set to the pipeline between dosing pump (10) and heterotrophic denitrification denitrogenation unit (3).
5. the denitrification denitrogenation processing unit of fast and low-cost according to claim 4, it is characterised in that: the online prison
Surveying unit (2) includes online pH meter, online NO3 -Monitor and online COD monitor.
6. the denitrification denitrogenation processing unit of fast and low-cost according to claim 4, it is characterised in that: the heterotrophism is anti-
Nitrification denitrogenation unit (3) is followed successively by water distribution area (302), reaction zone and sloping plate deposition district (301) from bottom to top, and reactor water outlet can
Diameter flow to autotrophic denitrification denitrogenation unit (4).
7. the denitrification denitrogenation processing unit of fast and low-cost according to claim 6, it is characterised in that: the autotrophy is anti-
Supporting layer (401) are arranged in the compounded mix conversion zone bottom for nitrifying denitrogenation unit (4).
8. the denitrification denitrogenation processing unit of fast and low-cost according to claims 1 to 7, it is characterised in that: described different
The volumetric ratio for supporting denitrification denitrogenation unit (3) and autotrophic denitrification denitrogenation unit (4) is 1:(4~10).
9. a kind of denitrification denitrogenation processing method of fast and low-cost, it is characterised in that: use claim 1~8 any one
The denitrification denitrogenation processing unit of the fast and low-cost is handled, comprising the following steps:
A) after waste water enters system, on-line monitoring unit (2) water quality is detected, will test numeric feedback to water inlet regulation and
Control system for adding drugs；
B) the water inlet regulation enters heterotrophic denitrification denitrogenation unit (3) and autotrophic denitrification with control system for adding drugs control waste water
The flow proportional of denitrogenation unit (4).
10. the denitrification denitrogenation processing method of fast and low-cost according to claim 9, it is characterised in that: the water inlet
It is as follows that regulation specifically regulates and controls method with control system for adding drugs:
(1) in influent quality when C/N > 3, waste water fully enters heterotrophic denitrification denitrogenation unit (3) processing, and processing water outlet enters
Autotrophic denitrification denitrogenation unit (4) processing；
(2) in influent quality when C/N≤3, NO3 -When concentration < 200mg/L, the heterotrophic denitrification denitrogenation unit (3) and autotrophy
Denitrification denitrogenation unit (4) influent flow rate distribution ratio example is 1:(5~8), while heterotrophic denitrification denitrogenation unit (3) processing water outlet
Into autotrophic denitrification denitrogenation unit (4) processing；
(3) in influent quality when C/N≤3, NO3 -When concentration >=200mg/L, the heterotrophic denitrification denitrogenation unit (3) and autotrophy
Denitrification denitrogenation unit (4) influent flow rate distribution ratio example is (2~10): 1, while heterotrophic denitrification denitrogenation unit (3) is handled out
Water enters autotrophic denitrification denitrogenation unit (4) processing.
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