CN109095733A - A kind of deep denitrogenation device and method of low ratio of carbon to ammonium city domestic sewage - Google Patents
A kind of deep denitrogenation device and method of low ratio of carbon to ammonium city domestic sewage Download PDFInfo
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- CN109095733A CN109095733A CN201811285462.7A CN201811285462A CN109095733A CN 109095733 A CN109095733 A CN 109095733A CN 201811285462 A CN201811285462 A CN 201811285462A CN 109095733 A CN109095733 A CN 109095733A
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- cut nitrification
- denitrification
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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
- C02F9/00—Multistage 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
Abstract
The present invention provides the deep denitrogenation device and method of a kind of low ratio of carbon to ammonium city domestic sewage, the wherein deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage, comprising: short-cut nitrification and denitrification reactor, ion-exchange reactions device and programmable process controller；Aeration head, No.1 blender, pH probe and DO probe are provided in the short-cut nitrification and denitrification reactor；The aeration head is connect by pipeline with air compressor；The pH probe and DO probe are electrically connected with the host of pH/DO analyzer；The ion-exchange reactions device is filled with magnetic anion exchange resin, and No. two blenders are arranged inside.Device provided by the invention, it is reacted by short-cut nitrification and denitrification and is combined with ion-exchange reactions, under conditions of being not necessarily to additional carbon, processing to low ratio of carbon to ammonium city domestic sewage advanced nitrogen is realized, to make to be discharged ammonia nitrogen, total nitrogen reaches the level-one A standard of urban wastewater treatment firm pollutant emission standard.
Description
Technical field
The present invention relates to city domestic sewage processing technology fields, more particularly to a kind of low ratio of carbon to ammonium city domestic sewage
Deep denitrogenation device and method.
Background technique
Level-one A mark in China " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) promulgated in 2002
Alignment request is discharged ammonia nitrogen concentration and is less than 5mg/L, and total nitrogen (TN) concentration is less than 15mg/L.In November, 2015, Chinese Ministry of Environmental Protection assigned
The revision task of " urban wastewater treatment firm pollutant emission standard " (GB18918-2002), the new standard rule of exposure draft
It is scheduled on that environmental bearing capacity is weaker, is also easy to produce more serious problem of environmental pollution area, it should its pollutant emission of strict control,
The municipal sewage plant in these areas executes special emission limit.Special emission limit regulation water eutrophication problem is serious
Regional requirements ammonia nitrogen, TN emission limit are respectively 1.5mg/L, 10mg/L, and non-water body eutrophication problem seriously arrange by regional ammonia nitrogen
Putting limit value is 3mg/L.
Traditional nitration denitrification denitrogenation is to convert the ammonia nitrogen in sewage under the action of ammonia oxidation bacteria under aerobic environment
For nitrite nitrogen, then under the action of nitrite nitrogen oxidation bacteria it is converted into nitrate nitrogen, then under anaerobic environment, in denitrifying bacterium
Under the action of, nitrogen is converted by nitrate nitrogen using carbon source.
China's city domestic sewage belongs to typical low ratio of carbon to ammonium (COD mass concentration/total nitrogen concentration, C/N)
Sewage, C/N are generally less than 5, and sometimes even less than 3.For low C/N city domestic sewage, due to carbon source deficiency, using traditional nitre
When changing denitrification denitrogenation, usually needs additional carbon to be just able to achieve its advanced nitrogen in denitrification process, meet discharge standard.
But additional carbon will lead to denitrification process excess sludge production increase, cause sewage treatment plant to sludge at
The cost and difficulty of reason increase.
Summary of the invention
A kind of deep denitrogenation device for being designed to provide low ratio of carbon to ammonium city domestic sewage of the embodiment of the present invention and side
Method does not increase excess sludge production to realize while carrying out advanced nitrogen to city domestic sewage.Specific technical solution is such as
Under:
Firstly, the present invention provides a kind of deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage, including short distance nitration
Denitrification reactor, ion-exchange reactions device and programmable process controller；The water outlet of the short-cut nitrification and denitrification reactor
Mouth is connect with the water inlet of the ion-exchange reactions device by pipeline；Exposure is provided in the short-cut nitrification and denitrification reactor
Gas head, No.1 blender, pH probe and DO probe；The aeration head is connect by pipeline with air compressor；The pH probe
It is electrically connected with the host of pH/DO analyzer with DO probe；The ion-exchange reactions device is filled with magnetic anion exchange tree
No. two blenders are arranged inside in rouge；The programmable process controller respectively with the air compressor, No.1 blender,
The main-machine communication connection of No. two blenders, pH/DO analyzer.
In certain embodiments of the present invention, described device further includes No.1 outlet valve and No. two outlet valves；Described one
Number outlet valve is installed on the water outlet of the short-cut nitrification and denitrification reactor；No. two outlet valves are installed on the ion
The water outlet of exchange reactor；The programmable process controller respectively with the No.1 outlet valve and No. two outlet valves
Communication connection.
In certain embodiments of the present invention, described device further includes raw water box, intermediate water tank and water tank；The original
Water tank is connect with the water inlet of the short-cut nitrification and denitrification reactor by pipeline；The intermediate water tank is arranged in the short distance
On pipeline between nitration denitrification reactor and the ion-exchange reactions device；The water tank and the ion-exchange reactions
The water outlet of device is connected by pipeline.
In certain embodiments of the present invention, it is set on the pipeline between raw water box and short-cut nitrification and denitrification reactor
It is equipped with raw water intake pump；Intermediate water tank water outlet pump is provided on pipeline between intermediate water tank and ion-exchange reactions device；Institute
Programmable process controller is stated to communicate to connect with the raw water intake pump and the intermediate water tank water outlet pump respectively.
In certain embodiments of the present invention, gas is provided in the connecting pipe of the aeration head and air compressor
Flowmeter；The gas flowmeter and the programmable process controller communicate to connect.
In certain embodiments of the present invention, described device further includes computer；The computer may be programmed with described
Process controller communication connection.
In certain embodiments of the present invention, the short-cut nitrification and denitrification reactor is sbr reactor device；The ion
Exchange reactor is sbr reactor device.
Secondly, the present invention provides a kind of deep denitrification methods of low ratio of carbon to ammonium city domestic sewage, comprising the following steps:
(1) short-cut nitrification and denitrification process: city domestic sewage to be processed is made to enter short-cut nitrification and denitrification reaction
After device, start No.1 blender, first carry out anti-nitration reaction, removes a upper period remaining nitrous state using the carbon source in sewage
Nitrogen；Then stop stirring, be aerated, increase the dissolved oxygen content in water；It controls molten in short-cut nitrification and denitrification reactor
Oxygen concentration is solved, so that sewage carries out short distance nitration reaction；After aeration, endogenous denitrification reaction is carried out；The anti-nitre of short distance nitration
The water outlet for changing reactor enters in ion-exchange reactions device；
(2) magnetic resin adsorption process: make to enter ion-exchange reactions device by the sewage of short-cut nitrification and denitrification process
In, the nitrite nitrogen in sewage is removed by magnetic anion exchange resin.
In certain embodiments of the present invention, during short-cut nitrification and denitrification, by may be programmed process controller
The starting and closing of control No.1 blender and aeration quantity and aeration time.
The deep denitrogenation device and method of a kind of low ratio of carbon to ammonium city domestic sewage provided in an embodiment of the present invention, by short distance
Nitration denitrification reaction is combined with ion-exchange reactions, and first passing through short distance nitration reaction turns the ammonia nitrogen in low carbon-nitrogen ratio sewage
Nitrite nitrogen is turned to, then by anti-nitration reaction, removes part nitrite nitrogen using the carbon source in sewage, is handed over finally by ion
Reaction is changed to remove nitrite nitrogen remaining in sewage；Realize the processing to low ratio of carbon to ammonium city domestic sewage advanced nitrogen, from
And make to be discharged the level-one A standard that ammonia nitrogen, total nitrogen reach urban wastewater treatment firm pollutant emission standard.
Meanwhile additional carbon not will lead to the increase of denitrification process excess sludge production, reduce sewage treatment plant pair
The cost and difficulty of Treatment of Sludge.
In addition, the magnetic anion exchange resin grain diameter in ion reactor is small, specific surface area is larger, regeneration rate
Height, removal nitrite nitrogen is high-efficient, and is not easy to be affected by temperature；Simultaneously as resin has weak magnetic, it is easy aggregation sedimentation,
It is not easy to be lost with water flow, the rate of recovery is high.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of deep denitrogenation device schematic diagram of low ratio of carbon to ammonium city domestic sewage provided in an embodiment of the present invention；
Wherein, 1- raw water box；1.1- raw water intake pump；2- short-cut nitrification and denitrification reactor；2.1- air compressor；
2.2- gas flowmeter；2.3- aeration head；2.4- No.1 blender；The host of 2.5-pH/DO analyzer；2.6-pH probe；
2.7-DO probe；2.8- No.1 outlet valve；2.9- intermediate water tank；3- ion-exchange reactions device；3.1- intermediate water tank water outlet pump；
No. bis- blenders of 3.2-；No. bis- outlet valves of 3.3-；3.4- water tank；4- may be programmed process controller；4.1- No.1 blender end
Mouthful；4.2- is aerated relay port；4.3- raw water water inlet pump relay port；4.4-pH/DO analyzer port；4.5- No.1 goes out
Water valve port；4.6- intermediate water tank is discharged pump relay port；No. bis- blender ports 4.7-；No. bis- outlet valve ports 4.8-；
5- computer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Present invention firstly provides a kind of deep denitrogenation devices of low ratio of carbon to ammonium city domestic sewage, as shown in Figure 1, packet
It includes:
Short-cut nitrification and denitrification reactor 2, ion-exchange reactions device 3 and programmable process controller 4；
The water inlet of the water outlet of the short-cut nitrification and denitrification reactor 2 and the ion-exchange reactions device 3 passes through pipe
Road connection；
Aeration head 2.3, No.1 blender 2.4,2.6 and of pH probe are provided in the short-cut nitrification and denitrification reactor 2
DO probe 2.7；
The aeration head 2.3 is connect by pipeline with air compressor 2.1；
2.6 and DO of pH probe probe 2.7 is electrically connected with the host 2.5 of pH/DO analyzer；
The ion-exchange reactions device 3 is filled with magnetic anion exchange resin, and No. two blenders 3.2 are arranged inside；
The programmable process controller 4 respectively with 2.4, No. two air compressor 2.1, No.1 blender blenders
3.2, the host 2.5 of pH/DO analyzer communicates to connect.
In certain specific embodiments of the invention, exists in short-cut nitrification and denitrification reactor 2 and contain ammonia oxidation bacteria
With the sludge of denitrifying bacterium.
In certain specific embodiments of the invention, pass through the dissolved oxygen in control short-cut nitrification and denitrification reactor 2
Nitrite nitrogen oxidation bacteria in activated sludge can be eluriated out short distance nitre by content, pH value, temperature and free nitrous acid concentration etc.
Change denitrification reactor 2, only retains ammonia oxidation bacteria, so that nitrifying process final product is nitrite nitrogen, it can compared to complete nitrification
To save 25% aeration quantity；It should be noted that the control mode of this removal nitrite nitrogen oxidation bacteria is art technology
Well known to personnel, the present invention is herein without limiting.
In certain specific embodiments of the invention, aeration head 2.3 can be fixed on short-cut nitrification and denitrification reactor 2
Bottom.
In certain specific embodiments of the invention, programmable process controller 4 is built-in with No.1 blender port
4.1, relay port 4.2, pH/DO analyzer port 4.4 and No. two blender ports 4.7 are aerated；Programmable process controller 4
Pass through No.1 blender port 4.1, aeration relay port 4.2, pH/DO analyzer port 4.4 and No. two blender ports 4.7
Respectively with No.1 blender 2.4, air compressor 2.1, the host 2.5 of pH/DO analyzer and No. two 3.2 communication links of blender
It connects；By communication connection, programmable process controller 4 be may be implemented to No.1 blender 2.4, air compressor 2.1 and No. two
The control of blender 3.2, and receive the related data information that the host 2.5 of pH/DO analyzer is fed back.Certainly, No.1 is stirred
It mixes device 2.4, air compressor 2.1, the host 2.5 of pH/DO analyzer and No. two blenders 3.2 and also has corresponding communication ends
Mouthful, for being communicated with programmable process controller 4.
It should be noted that those skilled in the art can root for programmable process controller 4 of the present invention
Its specific structure etc. is realized in description according to the present invention at this to its function and/or purposes using the relevant prior art；This
Invention is herein without specifically limiting.
In certain specific embodiments of the invention, described device further includes No.1 outlet valve 2.8 and No. two outlet valves
3.3；
The No.1 outlet valve 2.8 is installed on the water outlet of the short-cut nitrification and denitrification reactor 2；
No. two outlet valves 3.3 are installed on the water outlet of the ion-exchange reactions device 3；
The programmable process controller 4 respectively with 3.3 communication link of the No.1 outlet valve 2.8 and No. two outlet valves
It connects；Specifically, it may be programmed process controller 4 and be also built-in with No.1 outlet valve port 4.5 and No. two outlet valve ports 4.8；It can compile
Journey process controller 4 by No.1 outlet valve port 4.5 and No. two outlet valve ports 4.8 respectively with No.1 outlet valve 2.8 and two
The communication port of number outlet valve 3.3 is communicated, for controlling unlatching and the pass of No.1 outlet valve 2.8 and No. two outlet valves 3.3
It closes.
In certain specific embodiments of the invention, described device further includes raw water box 1, intermediate water tank 2.9 and water outlet
Case 3.4；
The raw water box 1 is connect with the water inlet of the short-cut nitrification and denitrification reactor 2 by pipeline；The intermediate water
Case 2.9 is arranged on the pipeline between the short-cut nitrification and denitrification reactor 2 and the ion-exchange reactions device 3；It is described go out
Water tank 3.4 is connect with the water outlet of the ion-exchange reactions device 3 by pipeline.
Pipe in certain specific embodiments of the invention, between raw water box 1 and short-cut nitrification and denitrification reactor 2
Raw water intake pump 1.1 is provided on road；
Intermediate water tank water outlet pump 3.1 is provided on pipeline between intermediate water tank 2.9 and ion-exchange reactions device 3；
The programmable process controller 4 is logical with the raw water intake pump 1.1 and the intermediate water tank water outlet pump 3.1 respectively
Letter connection；Specifically, it may be programmed process controller 4 and be also built-in with raw water water inlet pump relay port 4.3 and intermediate water tank water outlet
Pump relay port 4.6；Raw water intake pump 1.1 and intermediate water tank water outlet pump 3.1 are also respectively arranged with communication port；It may be programmed
Range controller 4 by its raw water intake pump relay port 4.3 and intermediate water tank be discharged pump relay port 4.6 respectively with raw water
The communication port of intake pump 1.1 and intermediate water tank water outlet pump 3.1 is communicated, for controlling raw water intake pump 1.1 and intermediate water
The opening and closing etc. of case water outlet pump 3.1.
In certain specific embodiments of the invention, in the connecting pipe of the aeration head 2.3 and air compressor 2.1
It is provided with gas flowmeter 2.2；
The gas flowmeter 2.2 is communicated to connect with the programmable process controller 4；Specifically, it may be programmed program-controlled
Device 4 processed is also built-in with gas flowmeter port (not shown)；Gas flowmeter 2.2 is also equipped with communication port；It is programmable
Controller 4 is communicated by its gas flowmeter port with the communication port of gas flowmeter 2.2, to receive gas flowmeter
2.2 related data informations fed back.
In certain specific embodiments of the invention, described device further includes computer 5, computer 5 and be may be programmed
Range controller 4 communicates to connect；Specifically, it may be programmed process controller 4 and be provided with signal output port (not shown), pass through
This port and computer 5 communicate to connect；For showing the host 2.5 and gas flowmeter of pH/DO analyzer on computer 5
2.2 related data informations etc. fed back.
In certain specific embodiments of the invention, the short-cut nitrification and denitrification reactor 2 can be SBR
(Sequencing Batch Reactor, sequencing batch reactor) reactor；
The ion-exchange reactions device 3 can be anti-for SBR (Sequencing Batch Reactor, sequencing batch reactor)
Answer device.
The present invention also provides the methods of application nitrogen rejection facility above-mentioned processing low ratio of carbon to ammonium municipal sewage, comprising:
(1) short-cut nitrification and denitrification process: city domestic sewage to be processed is made to enter short-cut nitrification and denitrification reaction
After device 2, start No.1 blender 2.4, first carry out anti-nitration reaction, removes a upper period remaining Asia using the carbon source in sewage
Nitrate nitrogen；Then stop stirring, be aerated, increase the dissolved oxygen content in water；It controls in short-cut nitrification and denitrification reactor 2
Dissolved oxygen concentration so that sewage carry out short distance nitration reaction；After aeration, endogenous denitrification reaction is carried out；Short distance nitration
The water outlet of denitrification reactor 2 enters in ion-exchange reactions device 3；
(2) magnetic resin adsorption process: make to enter ion-exchange reactions device 3 by the sewage of short-cut nitrification and denitrification process
In, the nitrite nitrogen in sewage is removed by magnetic anion exchange resin.
In certain specific embodiments of the invention, city domestic sewage to be processed injects raw water box 1 as raw water
In, raw water intake pump 1.1 is started by programmable process controller 4, the city domestic sewage in raw water box 1 is pumped into short distance nitre
Change denitrification reactor 2, when reaching default flooding time, may be programmed process controller 4 and control the closing of raw water intake pump 1.1,
Water inlet end.
In short-cut nitrification and denitrification process (1) of the invention, after water inlet end, the control of process controller 4 one may be programmed
Number blender 2.4 is opened, and the denitrifying bacterium in short-cut nitrification and denitrification reactor 2 is anti-using the carbon source progress denitrification in sewage
It answers, removes a upper period remaining nitrite nitrogen.In denitrification process, when the pH value change curve being shown on computer 5
First derivative by just becoming negative when, illustrate that anti-nitration reaction terminates.After 0.5~1h that anti-nitration reaction terminates, it may be programmed
Range controller 4 controls No.1 blender 2.4 and stops stirring.
Then, air compressor 2.1 is by the programmable control of process controller 4 starting, in short-cut nitrification and denitrification reactor 2
It is inside aerated, ammonia oxidation bacteria therein is made to carry out short distance nitration reaction.Aeration quantity is controlled, is controlled in the 0.5h for starting aeration
Dissolved oxygen (DO) concentration is less than 1mg/L in short-cut nitrification and denitrification reactor 2.When the pH value variation being shown on computer 5 is bent
The first derivative of line is become just by negative, and when aeration time is greater than 1h or DO value is greater than 3mg/L, and when aeration time is greater than 3h, is said
Bright short distance nitration reaction terminates, and programmable process controller 4 controls air compressor 2.1 and stops working.
Then, No.1 blender 2.4 is again started up, and the denitrifying bacterium in short-cut nitrification and denitrification reactor 2 utilizes aeration
It is stored in intracorporal carbon source in preceding whipping process and carries out endogenous denitrification reaction.When the pH value variation being shown on computer 5 is bent
The first derivative of line by just becoming negative, and mixing time be greater than 1h when or mixing time be greater than 2h when, illustrate endogenous denitrification react
Terminate, may be programmed process controller 4 and control the stopping of No.1 blender 2.4.
Later, 2 domestic demand of short-cut nitrification and denitrification reactor passes through the sedimentation time of 0.5~1h, makes sludge settling to short distance
Behind the bottom of nitration denitrification reactor 2, it may be programmed process controller 4 and control the unlatching of No.1 outlet valve 2.8, make by short distance nitre
Short-cut nitrification and denitrification reactor 2 is discharged in the sewage for changing denitrification process, and draining is than being 50%~70%.It can be compiled after draining
Journey process controller 4 controls No.1 outlet valve 2.8 and closes.Before the operation for entering next period, short-cut nitrification and denitrification is anti-
Device 2 is answered to need idle 1~2h.After reaching preset standby time, it may be programmed process controller 4 and control raw water intake pump 1.1
Starting, short-cut nitrification and denitrification process enter next period.
In specific implementation process, it can preset what it was intake and drained according to the capacity of short-cut nitrification and denitrification reactor 2
Time.
In certain specific embodiments of the invention, the sewage being discharged from short-cut nitrification and denitrification reactor 2 can be first
Into intermediate water tank 2.9, after draining, it may be programmed process controller 4 and control the starting of intermediate water tank water outlet pump 3.1, it will be dirty
Water is pumped into ion-exchange reactions device 3 from intermediate water tank 2.9.
In magnetic resin adsorption process (2) of the invention, when the sewage Jing Guo short-cut nitrification and denitrification process enter from
After in sub- exchange reactor 3, it may be programmed process controller 4 and control No. two startings of blenders 3.2, utilize ion-exchange reactions device 3
In magnetic anion exchange resin carry out ion-exchange reactions, to remove remaining nitrite nitrogen in sewage.Ion exchange is anti-
About 20~40min between seasonable may be programmed process controller 4 and control No. two stopping stirrings of blenders 3.2 after reaction.
Magnetic anion exchange resin is discharged with water flow in the drainage procedure of ion-exchange reactions device 3 in order to prevent,
Before No. two outlet valves 3.3 are opened, magnetic anion exchange resin needs the sedimentation time of 10~20min.It is precipitated when reaching
After time, No. two outlet valves 3.3 start, and draining is than being 90%~95%.After draining, No. two outlet valves 3.3 are closed.When can
When programming process controller 4 is again started up intermediate water tank water outlet pump 3.1, magnetic resin adsorption process (2) enters next period.
In specific implementation process, the time of its water inlet and draining can be preset according to the capacity of ion reactor 3.
In certain specific embodiments of the invention, magnetic anion exchange resin partial size is 10~200 μm, water flowing multiple
It is set as 400~800BV (1.25~2.5mL/L).
Below by specific embodiment, filled using the advanced nitrogen of low ratio of carbon to ammonium city domestic sewage provided by the invention
It sets, the method for processing sewage provided by the invention is illustrated.
Embodiment 1
The deep denitrogenation device of its low ratio of carbon to ammonium city domestic sewage applied is as shown in Figure 1, include
Raw water box 1, short-cut nitrification and denitrification reactor 2, intermediate water tank 2.9, ion-exchange reactions device 3, water tank 3.4 and
Programmable process controller 4；
The water inlet of the water outlet of the short-cut nitrification and denitrification reactor 2 and the ion-exchange reactions device 3 passes through pipe
Road connection；The raw water box 1 is connect with the water inlet of the short-cut nitrification and denitrification reactor 2 by pipeline；The intermediate water
Case 2.9 is arranged on the pipeline between the short-cut nitrification and denitrification reactor 2 and the ion-exchange reactions device 3；It is described go out
Water tank 3.4 is connect with the water outlet of the ion-exchange reactions device 3 by pipeline；
The short-cut nitrification and denitrification reactor 2 and ion-exchange reactions device 3 are all made of sbr reactor device；
The water outlet of the short-cut nitrification and denitrification reactor 2 and ion-exchange reactions device 3 is respectively arranged with No.1 and goes out
Water valve 2.8 and No. two outlet valves 3.3；
Aeration head 2.3, No.1 blender 2.4,2.6 and of pH probe are provided in the short-cut nitrification and denitrification reactor 2
DO probe 2.7；The aeration head 2.3 is connect by pipeline with air compressor 2.1；It is compressed in the aeration head 2.3 with air
Gas flowmeter 2.2 is provided in the connecting pipe of machine 2.1；The pH pop one's head in 2.6 and DO probe 2.7 with pH/DO analyzer
Host 2.5 be electrically connected；
The ion-exchange reactions device 3 is filled with magnetic anion exchange resin, and No. two blenders 3.2 are arranged inside；
Raw water intake pump 1.1 is provided on pipeline between raw water box 1 and short-cut nitrification and denitrification reactor 2；
Intermediate water tank water outlet pump 3.1 is provided on pipeline between intermediate water tank 2.9 and ion-exchange reactions device 3；
The programmable process controller 4 respectively with the raw water intake pump 1.1, air compressor 2.1, gas flowmeter
2.2, No.1 blender 2.4, the host 2.5 of pH/DO analyzer, No.1 outlet valve 2.8, intermediate water tank water outlet pump 3.1, two stir
3.2, No. two outlet valves 3.3 of device are mixed to communicate to connect；Programmable process controller 4 is also communicated to connect with computer 5.
2 dischargeable capacity of short-cut nitrification and denitrification reactor is 12L, and draining is than being 50%, and sludge concentration is in reactor
2500~3500mg/L, regular spoil disposal, sludge age maintain 15 days or so, and it is 0.6m that it is constant that aeration quantity is controlled in aeration process3/
h.3 dischargeable capacity of ion-exchange reactions device is 8L, and draining is than being 95%.Reactor is under room temperature.
Certain community life sewage COD concentration is 110~320mg/L, and ammonia nitrogen concentration is 40~85mg/L, nitrite nitrogen, nitre
For state nitrogen concentration in detection limit hereinafter, total nitrogen concentration is 42~90mg/L, C/N is 1.6~4.3, and pH value is 7.0~7.8, is passed through
Steps of processing:
(1) start each reactor: short-cut nitrification and denitrification reactor 2 is inoculated with the surplus of city domestic sewage treatment plant secondary settling tank
Remaining sludge, controlling sludge concentration in reactor is 2000~4000mg/L, is pumped into community life sewage as starting sewage, control
Dissolved oxygen concentration is less than 1mg/L in aeration process in reactor processed, and pH value maintains between 7.8~8.5, and aeration time is no more than
3h, sedimentation and drawing is idle after aeration, continues thereafter with repetition water inlet aeration, passes through the domestication in 4 periods daily, work as reactor
Water outlet nitrite nitrogen accumulation rate when being greater than 95% and persistently maintaining 15 days or more, then illustrate to realize stable short distance in reactor
Nitrification；Magnetic anion exchange resin is added in ion-exchange reactions device 3, the water flowing multiple for controlling resin in reactor is
500BV。
(2) short-cut nitrification and denitrification reactor 2 and ion-exchange reactions device 3 are connected: when the water in each water tank meet into
When water demand, reactor automatic feeding water, by 3 series operation of short-cut nitrification and denitrification reactor 2 and ion-exchange reactions device, surely
Community life sewage is added in raw water box 1 after fixed.
(3) 25min, and benefit short-cut nitrification and denitrification reactor 2: are set for reactor flooding time by computer 5
The pump speed that raw water intake pump 1.1 is adjusted with programmable process controller 4 is 240mL/min.Water inlet end after 25min；Then, one
Number blender 2.4 is opened, and the denitrifying bacterium in short-cut nitrification and denitrification reactor 2 is anti-using the carbon source progress denitrification in sewage
It answers, a upper period remaining nitrite nitrogen of removal, in denitrification process, when the pH value change curve being shown on computer 5
When first derivative is by just becoming negative, illustrate that anti-nitration reaction terminates.After the 1h that anti-nitration reaction terminates, No.1 blender 2.4 stops
Only stir；
After stirring, air compressor 2.1 starts, and is aerated, is made wherein in short-cut nitrification and denitrification reactor 2
Ammonia oxidation bacteria carry out short distance nitration reaction.Aeration quantity is controlled, control short-cut nitrification and denitrification is anti-in the 0.5h for starting aeration
Dissolved oxygen concentration in device 2 is answered to be less than 1mg/L.When the first derivative for the pH value change curve being shown on computer 5 is become just by negative,
And aeration time is when being greater than 1h or DO value is greater than 3mg/L, and when aeration time is greater than 3h, illustrates that short distance nitration reaction terminates, it is empty
Air compressor 2.1 stops working；
After aeration, No.1 blender 2.4 is again started up, the denitrifying bacterium benefit in short-cut nitrification and denitrification reactor 2
Endogenous denitrification reaction is carried out with intracorporal carbon source is stored in whipping process before aeration.When the pH value being shown on computer 5
The first derivative of change curve by just becoming negative, and mixing time be greater than 1h when or mixing time be greater than 2h when, illustrate endogenous anti-nitre
Changing reaction terminates, and No.1 blender 2.4 is closed；
After stirring stops, the sludge in short-cut nitrification and denitrification reactor 2 starts to settle, and 0.5h post-reactor is drained into
Between water tank 2.9, water discharge time 15min, after draining No.1 outlet valve 2.8 close；
(4) ion-exchange reactions device 3: after short-cut nitrification and denitrification reactor 2 drains, intermediate water tank water outlet pump
3.1 startings, adjusting its pump speed is 500mL/min, and setting flooding time is 15min.After water inlet end, intermediate water tank water outlet is closed
Pump 3.1 starts No. two blenders 3.2, and stirring is so that magnetic anion exchange resin and sewage are sufficiently mixed generation ion exchange
Reaction is automatically stopped stirring, magnetic resin sinks rapidly to remove remaining nitrite nitrogen in sewage after reaction carries out 25min
Drop, 10min post-reactor are drained to water tank, water discharge time 10min.Final outflow water COD concentration is less than 40mg/L, and ammonia nitrogen is dense
Degree is less than 3mg/L, and total nitrogen concentration is less than 10mg/L, and the level-one A better than national urban wastewater treatment firm pollutant emission standard is marked
Quasi- (COD concentration is 50mg/L, and ammonia nitrogen concentration is less than 5mg/L, and total nitrogen concentration is less than 15mg/L).
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (9)
1. a kind of deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage characterized by comprising short-cut nitrification and denitrification is anti-
Answer device, ion-exchange reactions device and programmable process controller；
The water outlet of the short-cut nitrification and denitrification reactor is connect with the water inlet of the ion-exchange reactions device by pipeline；
Aeration head, No.1 blender, pH probe and DO probe are provided in the short-cut nitrification and denitrification reactor；
The aeration head is connect by pipeline with air compressor；
The pH probe and DO probe are electrically connected with the host of pH/DO analyzer；
The ion-exchange reactions device is filled with magnetic anion exchange resin, and No. two blenders are arranged inside；
The programmable process controller is measured with the air compressor, No.1 blender, No. two blenders, pH/DO respectively
The main-machine communication of instrument connects.
2. a kind of deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage as described in claim 1, which is characterized in that described
Device further includes No.1 outlet valve and No. two outlet valves；
The No.1 outlet valve is installed on the water outlet of the short-cut nitrification and denitrification reactor；
No. two outlet valves are installed on the water outlet of the ion-exchange reactions device；
The programmable process controller is communicated to connect with the No.1 outlet valve and No. two outlet valves respectively.
3. a kind of deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage as described in claim 1, which is characterized in that described
Device further includes raw water box, intermediate water tank and water tank；
The raw water box is connect with the water inlet of the short-cut nitrification and denitrification reactor by pipeline；The intermediate water tank setting
On pipeline between the short-cut nitrification and denitrification reactor and the ion-exchange reactions device；The water tank and it is described from
The water outlet of sub- exchange reactor is connected by pipeline.
4. a kind of deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage as claimed in claim 3, which is characterized in that
Raw water intake pump is provided on pipeline between raw water box and short-cut nitrification and denitrification reactor；
Intermediate water tank water outlet pump is provided on pipeline between intermediate water tank and ion-exchange reactions device；
The programmable process controller is communicated to connect with the raw water intake pump and the intermediate water tank water outlet pump respectively.
5. a kind of deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage as described in claim 1, which is characterized in that described
Gas flowmeter is provided in the connecting pipe of aeration head and air compressor；
The gas flowmeter and the programmable process controller communicate to connect.
6. a kind of deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage as described in claim 1, which is characterized in that described
Device further includes computer；
The computer and the programmable process controller communicate to connect.
7. special such as a kind of deep denitrogenation device of low ratio of carbon to ammonium city domestic sewage according to any one of claims 1 to 6
Sign is that the short-cut nitrification and denitrification reactor is sbr reactor device；
The ion-exchange reactions device is sbr reactor device.
8. the method for application nitrogen rejection facility according to any one of claims 1 to 7 processing low ratio of carbon to ammonium city domestic sewage,
It is characterized in that, comprising:
(1) short-cut nitrification and denitrification process: after so that city domestic sewage to be processed is entered short-cut nitrification and denitrification reactor,
Start No.1 blender, first carry out anti-nitration reaction, removes a upper period remaining nitrite nitrogen using the carbon source in sewage；So
Stop stirring afterwards, be aerated, increases the dissolved oxygen content in water；The dissolved oxygen controlled in short-cut nitrification and denitrification reactor is dense
Degree, so that sewage carries out short distance nitration reaction；After aeration, endogenous denitrification reaction is carried out；Short-cut nitrification and denitrification reaction
The water outlet of device enters in ion-exchange reactions device；
(2) magnetic resin adsorption process: making to enter in ion-exchange reactions device by the sewage of short-cut nitrification and denitrification process, leads to
Cross the nitrite nitrogen in magnetic anion exchange resin removal sewage.
9. the method for processing low ratio of carbon to ammonium city domestic sewage as claimed in claim 8, which is characterized in that anti-in short distance nitration
In nitrifying process, when by the starting and closing of programmable process controller control No.1 blender and aeration quantity and aeration
Between.
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| CN201811285462.7A CN109095733A (en) | 2018-10-31 | 2018-10-31 | A kind of deep denitrogenation device and method of low ratio of carbon to ammonium city domestic sewage |
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| CN201811285462.7A CN109095733A (en) | 2018-10-31 | 2018-10-31 | A kind of deep denitrogenation device and method of low ratio of carbon to ammonium city domestic sewage |
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|---|---|---|---|---|
| CN104986856A (en) * | 2015-07-27 | 2015-10-21 | 北京工业大学 | Method for treating low-carbon-nitrogen-ratio domestic sewage with partial shortcut nitrification-synchronous sludge fermentation, denitrification and anaerobic ammonium oxidation process |
| CN105036334A (en) * | 2015-07-27 | 2015-11-11 | 北京工业大学 | Device and method for treating urban sewage through repeated-water-inlet SBR by fully utilizing carbon source in raw water |
| CN105293693A (en) * | 2015-11-26 | 2016-02-03 | 中国矿业大学 | Anaerobic ammonium oxidation bacteria culture method based on anion and cation resin |
| CN207958053U (en) * | 2017-10-13 | 2018-10-12 | 温州大学 | A kind of heterotrophism short distance nitration system of matching Anammox |
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2018
- 2018-10-31 CN CN201811285462.7A patent/CN109095733A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986856A (en) * | 2015-07-27 | 2015-10-21 | 北京工业大学 | Method for treating low-carbon-nitrogen-ratio domestic sewage with partial shortcut nitrification-synchronous sludge fermentation, denitrification and anaerobic ammonium oxidation process |
| CN105036334A (en) * | 2015-07-27 | 2015-11-11 | 北京工业大学 | Device and method for treating urban sewage through repeated-water-inlet SBR by fully utilizing carbon source in raw water |
| CN105293693A (en) * | 2015-11-26 | 2016-02-03 | 中国矿业大学 | Anaerobic ammonium oxidation bacteria culture method based on anion and cation resin |
| CN207958053U (en) * | 2017-10-13 | 2018-10-12 | 温州大学 | A kind of heterotrophism short distance nitration system of matching Anammox |
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