CN106477720A - A kind of short-cut denitrification reactor and the quick start method of short-cut denitrification technique - Google Patents
A kind of short-cut denitrification reactor and the quick start method of short-cut denitrification technique 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
- C02F3/28—Anaerobic digestion processes
- C02F3/282—Anaerobic digestion processes using anaerobic sequencing batch reactors
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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
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/001—Upstream control, i.e. monitoring for predictive control
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The invention discloses a kind of short-cut denitrification reactor, is provided with anti-nitration reaction pond, agitator, liquid level gauge, online NO is provided with the anti-nitration reaction pond3 ‑N analyzer, temperature controller, online pH meter, outside anti-nitration reaction Chi Cebi, liquid level 1/2 and 3/4 position are respectively mounted a drainpipe, arrange magnetic valve on every drainpipe；It is provided with the water inlet pipe and intake pump connected with reaction tank；It is provided with the automatic regulating system that pH value automatic regulation controller and the medicine-adding bin for being controlled being connected with the controller, dosing pump, online pH meter constitute the pH value；It is additionally provided with the automatic controller of control reactor automatic running, the automatic controller and the intake pump, liquid level gauge, online NO3 ‑N analyzer, temperature controller, magnetic valve and pH value automatic regulation controller are controlled connection, the described reactor control system of composition.The present invention automatically controls degree height suitable for the quick startup of short-cut denitrification technique, less investment, low cost, and flexibly, quality is good, efficiency high, energy saving, beneficial to environmental protection for control.
Description
Technical field
The present invention relates to technical field of sewage, specifically a kind of short-cut denitrification device and reacted using short-cut denitrification
Device carries out the method that short-cut denitrification technique quickly starts.
Background technology
Anammox autotrophic denitrification technique is the revolutionary substitute technology of traditional nitration denitrification, and which passes through NO2 —N is (sub-
Nitrate nitrogen) to NH4 +- N (ammonia nitrogen) is aoxidized and is realized autotrophic denitrification, it is only necessary to by sewage about 50% NH4 +- N is converted into
NO2 -- N, saves 62.5% aeration energy consumption, it is not necessary to which additional carbon, sludge yield are low, do not produce greenhouse with respect to traditional handicraft
Gas.
Short distance nitration is Anammox reaction intermediate NO2 -The classical pathway that-N is produced, in the effect of ammonia oxidation bacteria
Lower by NH4 +- N is converted into NO2 —N.But stable short distance nitration is difficult to control to, especially for low ammonia nitrogen waste water, such as city is dirty
Water, short distance nitration are difficult to stable maintenance, it is difficult to provide stable, sufficient NO for Anammox reaction2 --N.Therefore, develop steady
Fixed, quick NO2 -The production method of-N is most important.
Short-cut denitrification technique is exactly a kind of quick, stable NO2 -- N production method, denitrification process control is being produced
NO2 -- N the stage, that is, denitrifying bacterium is prevented to utilize carbon source by NO2 -- N is reduced further into nitrogen.With traditional short distance nitration NO2 --
N produces process and compares, and short-cut denitrification 100% saves aeration energy consumption, and the reaction time shortens more than 50%, course of reaction control letter
Single, with huge practical engineering application potentiality.While Anammox reaction can produce NO3 --N.Can using short-cut denitrification
The NO that Anammox is produced3 -- N is reduced to NO2 -- N, is that Anammox provides NO2 -- N substrate, reduces water outlet further
NO3 -- N concentration.Therefore, short-cut denitrification technique has great actual application value, develops the fast of short-cut denitrification technique
Fast startup method has great importance.
Content of the invention
The present invention proposes a kind of denitrification reactor to solve above-mentioned technical problem, and the denitrification reactor is in tradition
Automatic regulating system, the reactor control system of pH value is additionally arranged on the basis of sbr reactor device.PH value automatic regulating system is realized
The automatically adjusting of pH value in reactor, reactor control system is according to NO in reactor3 -During the reaction of-N concentration control reactor
Between, realize automatically controlling for the functions such as water inlet, reaction and the draining of reactor.
The quick start method of short-cut denitrification technique, by reaction time, C：N value is ρCOD：ρNO3, that is, carbon source
COD and NO3 -The concentration ratio of-N, and the combined regulating of reaction initial pH value, realize fast enriching and the training of short-cut denitrification bacterium
Support, realize the quick startup of short-cut denitrification technique.
The purpose of the present invention is achieved through the following technical solutions：
A kind of short-cut denitrification reactor, is characterized in that：Anti-nitration reaction pond is provided with, is provided with the anti-nitration reaction pond
Agitator, liquid level gauge, online NO3 -- N analyzer, temperature controller, online pH meter, outside anti-nitration reaction Chi Cebi, liquid level 1/
2 and 3/4 position is respectively mounted a drainpipe, arranges magnetic valve on every drainpipe；It is provided with the water inlet connected with reaction tank
Pipe and intake pump；It is provided with pH value automatic regulation controller and the medicine-adding bin for being controlled being connected with the controller, dosing pump, online
The pH value automatic regulating system of pH meter composition；The automatic controller of control denitrification reactor automatic running is additionally provided with, should be certainly
Movement controller and the intake pump, liquid level gauge, online NO3 -- N analyzer, temperature controller, magnetic valve and pH value automatic regulation controller
Connection is controlled, constitutes short-cut denitrification reactor control system.
The present invention is improved further and the additional project of enforcement is：
The automatic controller is provided with remote wireless signals transport module, by the module automatic controller and Chang Nei center
Watch-dog carries out signal transmission connection, in time by the information transmission of denitrification reactor operation conditions to center monitor in factory.
The quick start method of short-cut denitrification technique is carried out using above-mentioned short-cut denitrification reactor, it is characterized in that including
Following steps：
1) short-cut denitrification reactor control system and pH value automatic regulating system is opened, is held according to anti-nitration reaction Chi Chi
Setup control numerical value：PH regulated value, pH value automatic regulation controller extract pH value interval time, adjust pH value time, denitrification
Reaction tank water temperature, reactor control system extract NO from online nitric acid salt determinator3 -The interval time of-N concentration, anti-nitration reaction
Chi Jingchen time, quiet heavy rear standby time；
2) seed sludge：The sludge being inoculated with denitrification reactor rich in denitrifying bacterium, tests the anti-of the sludge first
Rate of nitrification, denitrification rate need to be more than 0.1kg NO3 --N/m3D, the work of the general municipal sewage plant with denitrification functions
Property sludge mostly meets the requirements；In inoculation post-reactor, sludge concentration controls in 2500-4500mg/L；
3) concentration of the nitrate of configuration water inlet and COD：Nitrate is added in intake pool, controls NO3 —The concentration of N is
20-80mg/L, adds carbon source：Glucose, sodium acetate, starch, and the carbon/nitrogen in water inlet is adjusted than i.e. COD：NO3 -- N is 1-
2；
4) anti-nitration reaction pond water inlet：Automatic controller control starts intake pump, by the liquid level in anti-nitration reaction pond
Intake pump is closed after entering full water in meter control anti-nitration reaction pond；
5) pH value in anti-nitration reaction pond is adjusted：PH value regulating system is opened, is automatically adjusted initial reaction pH value and arrives
8.0-9.5, pH value control method are that online pH meter of the pH value automatic regulation controller from anti-nitration reaction pond obtains denitrification
PH value in reaction tank, when which is less than established standardses, extracts solution from medicine-adding bin by dosing pump and injects anti-nitration reaction
Pond, while turn on agitator, 5-10 extracts pH value after the second again, until pH value reaches standard, after 5-10 minute, pH regulating system is stopped
Only adjust.It is corresponding with chemical feeding quantity that chemical concentration according to anti-nitration reaction pool volume and medicine-adding bin pre-sets pH difference
Value, to ensure pH value regulation quick and precisely；
6) temperature of water in anti-nitration reaction pond is adjusted：Automatic controller is adjusted in anti-nitration reaction pond by temperature controller
Water temperature, controls at 25-32 DEG C；
7) start the course of reaction of denitrification reactor：After the completion of above-mentioned steps, automatic controller starts agitator, online
Nitric acid salt determinator records initial NO3 -- N concentration, denitrification reactor formally initially enter anti-nitration reaction process, reactor control
System processed extracts a NO per the 10-30 second from online nitric acid salt determinator3 -- N concentration, works as NO3 -- N concentration is less than initial NO3 --N
Concentration 1/3 when, stop agitator, carry out next step；
8) anti-nitration reaction pond carries out quiet heavy：After stopping agitator, it is quiet heavy that anti-nitration reaction pond is carried out, quiet heavy time 15-
30 minutes, in quiet heavy period, if water sludge interface is less than upper drainpipe in reactor, drainpipe draining in unlatching, less than lower row
Lower drainpipe draining then opened by water pipe；The quiet heavy time stops draining after terminating, and carries out next step；
9) cultivation cycle of a short-cut denitrification bacterium is completed：After the quiet heavy end in previous step anti-nitration reaction pond, leave unused 10-
After 30 minutes, nitrite NO in detection anti-nitration reaction pond2 -- N accumulation rate, i.e. course of reaction nitrite NO2 -- N concentration
Value added and the ratio of nitrate concentration decreasing value whether be more than 80%, if being not more than, terminating first cultivation cycle, returning
Return step 3) operation, carry out next cultivation cycle；Next step is carried out if being more than 80%；
10) terminate quick startup technical process：PH value automatic regulating system is closed, is automatically controlled by denitrification reactor
System controls, and carries out next step, starts the normal operation of short-cut denitrification technique；
11) anti-nitration reaction pond water inlet：Automatic controller control starts intake pump, by the liquid level in anti-nitration reaction pond
Intake pump is closed after entering full water in meter control anti-nitration reaction pond, carry out next step；
12) anti-nitration reaction process：Automatic controller starts agitator, and online nitric acid salt determinator records initial NO3 --N
Concentration, denitrification reactor formally initially enter anti-nitration reaction process, and reactor control system is per the 10-30 second from online nitric acid
Salt determinator extracts a NO3 -- N concentration, works as NO3 -- N concentration is less than initial NO3 -- N concentration 1/3 when, stop agitator, enter
Row next step；
13) anti-nitration reaction pond carries out Jing Chenpaishui：After stopping agitator, it is quiet heavy that anti-nitration reaction pond is carried out, when quiet heavy
Between 15-30 minute, in quiet heavy period, if in reactor water sludge interface be less than upper drainpipe, drainpipe draining in unlatching, low
Lower drainpipe draining is then opened in lower drainpipe；The quiet heavy time stops draining after terminating；Return the 11st) step.
Beneficial effects of the present invention：
1st, denitrification reactor structure is improved on the basis of original sbr reactor device, less investment, and low cost enters life
Produce the cycle of operation short；
2nd, the quick startup of short-cut denitrification reaction process can greatly improve the operation effect of short-cut denitrification process
Rate, greatly shortens the cycle of sewage disposal, and improve production efficiency, so as to greatly reducing operation cost and improving production capacity；
3rd, short-cut denitrification technique quick start method automatically controls degree height, and flexibly, accurately, quality is good, efficiency for control
High；
4th, energy saving, beneficial to environmental protection.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Specific embodiment
The present invention will be described with reference to the accompanying drawings and examples：
Embodiment 1：Referring to accompanying drawing, a kind of short-cut denitrification reactor, anti-nitration reaction pond 1 is provided with, anti-in the denitrification
Agitator 5, liquid level gauge 4, online NO is provided with Ying Chi3 -- N analyzer 3, temperature controller 7, online pH meter 9, in anti-nitration reaction pond side
Outside wall, liquid level 1/2 and 3/4 position are respectively mounted a drainpipe, arrange magnetic valve 13,14 on every drainpipe；It is provided with
The water inlet pipe connected with reaction tank and intake pump 2；It is provided with pH value automatic regulation controller 12 and is controlled with the controller
The medicine-adding bin 11 of connection, dosing pump 10, the pH value automatic regulating system of online pH meter composition；It is additionally provided with control anti-nitration reaction
The automatic controller 8 of device automatic running, the automatic controller and the intake pump, liquid level gauge, online NO3 -- N analyzer, temperature control
Device, magnetic valve and pH value automatic regulation controller are controlled connection, constitute short-cut denitrification reactor control system.
The automatic controller is provided with remote wireless signals transport module, by the module automatic controller and Chang Nei center
Watch-dog carries out signal transmission connection, in time by the information transmission of denitrification reactor operation conditions to center monitor in factory.
The quick start method of short-cut denitrification technique is carried out using above-mentioned short-cut denitrification reactor, comprising following step
Suddenly：
1) short-cut denitrification reactor control system and pH value automatic regulating system is opened, is held according to anti-nitration reaction Chi Chi
Setup control numerical value：PH regulated value is that 8.8, pH value automatic regulation controller extracts pH value interval time for 5 minutes, regulation pH value
Time be 5 seconds, anti-nitration reaction water temperature be 28 DEG C, reactor control system from online nitric acid salt determinator extraction NO3 --N
30 seconds interval times of concentration, 30 minutes quiet heavy time of anti-nitration reaction pond, quiet heavy rear 5 minutes standby time；
2) seed sludge：The sludge being inoculated with denitrification reactor rich in denitrifying bacterium, tests the anti-of the sludge first
Rate of nitrification, denitrification rate need to be more than 0.1kg NO3 --N/m3D, the work of the general municipal sewage plant with denitrification functions
Property sludge mostly meets the requirements；In inoculation post-reactor, sludge concentration controls in 2500-4500mg/L；
3) concentration of the nitrate of configuration water inlet and COD：Nitrate is added in intake pool, controls NO3 —The concentration of N is
20-80mg/L, adds carbon source：Glucose, sodium acetate, starch, and the carbon/nitrogen in water inlet is adjusted than i.e. COD：NO3 -- N is 1-
2；
4) anti-nitration reaction pond water inlet：Automatic controller control starts intake pump, by the liquid level in anti-nitration reaction pond
Intake pump is closed after entering full water in meter control anti-nitration reaction pond；
5) pH value in anti-nitration reaction pond is adjusted：PH value regulating system is opened, is automatically adjusted initial reaction pH value and arrives
8.8, pH value control method is that online pH meter of the pH value automatic regulation controller from anti-nitration reaction pond obtains anti-nitration reaction
PH value in pond, when which is less than established standardses, extracts solution from medicine-adding bin by dosing pump and injects anti-nitration reaction pond, with
When turn on agitator, 5-10 extracts pH value after the second again, until pH value reaches standard, after 5-10 minute, pH regulating system stops adjusting
Section.
6) temperature of water in anti-nitration reaction pond is adjusted：Automatic controller is adjusted in anti-nitration reaction pond by temperature controller
Water temperature, controls at 28 DEG C；
7) start the course of reaction of denitrification reactor：After the completion of above-mentioned steps, automatic controller starts agitator, online
Nitric acid salt determinator records initial NO3 -- N concentration, denitrification reactor formally initially enter anti-nitration reaction process, reactor control
System processed extracted a NO per 30 seconds from online nitric acid salt determinator3 -- N concentration, works as NO3 -- N concentration is less than initial NO3 -- N concentration
1/3 when, stop agitator, carry out next step；
8) anti-nitration reaction pond carries out quiet heavy：After stopping agitator, it is quiet heavy that anti-nitration reaction pond is carried out, 30 points of quiet heavy time
Clock, in quiet heavy period, if water sludge interface is less than upper drainpipe in reactor, drainpipe draining in unlatching, less than lower drainpipe
Lower drainpipe draining is then opened；The quiet heavy time stops draining after terminating, and carries out next step；
9) cultivation cycle of a short-cut denitrification bacterium is completed：After the quiet heavy end in previous step anti-nitration reaction pond, leave unused 10-
After 30 minutes, nitrite NO in detection anti-nitration reaction pond2 -- N accumulation rate, i.e. course of reaction nitrite NO2 -- N concentration
Value added and the ratio of nitrate concentration decreasing value whether be more than 80%, if being not more than, terminating first cultivation cycle, returning
Return step 3) operation, carry out next cultivation cycle；Next step is carried out if being more than 80%；
10) terminate quick startup technical process：Above-mentioned cultivation cycle carries out 5 afterwards, and testing result is：Sub- in reaction tank
Nitrate Accumulation rate is more than 80%, terminates cultivation cycle, and the quick technical process that starts is completed；PH value automatic regulating system is closed,
Controlled by denitrification reactor automatic control system, next step is carried out, start the normal operation of short-cut denitrification technique；
11) anti-nitration reaction pond water inlet：Automatic controller control starts intake pump, by the liquid level in anti-nitration reaction pond
Intake pump is closed after entering full water in meter control anti-nitration reaction pond, carry out next step；
12) anti-nitration reaction process：Automatic controller starts agitator, and online nitric acid salt determinator records initial NO3 --N
Concentration, denitrification reactor formally initially enter anti-nitration reaction process, and reactor control system is per 30 seconds from online nitrate
Analyzer extracts a NO3 -- N concentration, works as NO3 -- N concentration is less than initial NO3 -- N concentration 1/3 when, stop agitator, carry out
Next step；
13) anti-nitration reaction pond carries out Jing Chenpaishui：After stopping agitator, it is quiet heavy that anti-nitration reaction pond is carried out, when quiet heavy
Between 30 minutes, in quiet heavy period, if in reactor water sludge interface be less than upper drainpipe, in unlatching, drainpipe draining, is less than down
Lower drainpipe draining then opened by drainpipe；The quiet heavy time stops draining after terminating；Return the 11st) step.
The present embodiment has normally run one week, all goes well, and achieves preferable effect.When entering the normally startup of operation
Between reduced for 40% time than conventional startup method.
It should be understood that：On the premise of the equipment basic structure for not changing this patent and method basic step, similar
The technical scheme of change should also belong to the protection domain of this patent.
Claims (3)
1. a kind of short-cut denitrification reactor, is characterized in that：Anti-nitration reaction pond (1) is provided with, is set in the anti-nitration reaction pond
There are agitator (5), liquid level gauge (4), online NO3 -- N analyzer (3), temperature controller (7), online pH meter (9), in anti-nitration reaction pond
Outside the wall of side, liquid level 1/2 and 3/4 position are respectively mounted a drainpipe, arrange magnetic valve (13,14) on every drainpipe；
It is provided with the water inlet pipe and intake pump (2) connected with reaction tank；Be provided with pH value automatic regulation controller (12) and with the controller
Be controlled connect medicine-adding bin (11), dosing pump (10), online pH meter composition pH value automatic regulating system；It is additionally provided with control
The automatic controller (8) of denitrification reactor automatic running processed, the automatic controller and the intake pump, liquid level gauge, online
NO3 -- N analyzer, temperature controller, magnetic valve and pH value automatic regulation controller are controlled connection, composition short-cut denitrification reaction
Device control system.
2. short-cut denitrification reactor according to claim 1, is characterized in that：The automatic controller is provided with long distance wireless
Signal transmission module, carries out signal transmission by the module automatic controller and center monitor in factory and is connected, in time by anti-nitre
Change the information transmission of reactor operation conditions to center monitor in factory.
3. carry out the quick start method of short-cut denitrification technique using above-mentioned short-cut denitrification reactor, it is characterized in that include with
Lower step：
1) short-cut denitrification reactor control system and pH value automatic regulating system are opened, and it is fixed to be installed with according to anti-nitration reaction Chi Chi
Control numerical value：PH regulated value, pH value automatic regulation controller extract pH value interval time, adjust pH value time, anti-nitration reaction
Water temperature, reactor control system extract NO from online nitric acid salt determinator3 -The interval time of-N concentration, anti-nitration reaction pond are quiet
Heavy time, quiet heavy rear standby time；
2) seed sludge：The sludge being inoculated with denitrification reactor rich in denitrifying bacterium, tests the denitrification of the sludge first
Speed, denitrification rate need to be more than 0.1kg NO3 --N/m3D, the activity of the general municipal sewage plant with denitrification functions are dirty
Mud mostly meets the requirements；In inoculation post-reactor, sludge concentration controls in 2500-4500mg/L；
3) concentration of the nitrate of configuration water inlet and COD：Nitrate is added in intake pool, controls NO3 —The concentration of N is 20-
80mg/L, adds carbon source：Glucose, sodium acetate, starch, and the carbon/nitrogen in water inlet is adjusted than i.e. COD：NO3 -- N is 1-2；
4) anti-nitration reaction pond water inlet：Automatic controller control starts intake pump, by the liquid level gauge control in anti-nitration reaction pond
Intake pump is closed after entering full water in anti-nitration reaction pond processed；
5) pH value in anti-nitration reaction pond is adjusted：PH value regulating system is opened, and initial reaction pH value is automatically adjusted to 8.0-
9.5, pH value control method is that online pH meter of the pH value automatic regulation controller from anti-nitration reaction pond obtains anti-nitration reaction
PH value in pond, when which is less than established standardses, extracts solution from medicine-adding bin by dosing pump and injects anti-nitration reaction pond, with
When turn on agitator, 5-10 extracts pH value after the second again, until pH value reaches standard, after 5-10 minute, pH regulating system stops adjusting
Section.Chemical concentration according to anti-nitration reaction pool volume and medicine-adding bin pre-sets the respective value of pH difference and chemical feeding quantity, with
Ensure that pH value is adjusted quick and precisely；
6) temperature of water in anti-nitration reaction pond is adjusted：Automatic controller adjusts the water in anti-nitration reaction pond by temperature controller
Temperature, controls at 25-32 DEG C；
7) start the course of reaction of denitrification reactor：After the completion of above-mentioned steps, automatic controller starts agitator, online nitric acid
Salt determinator records initial NO3 -- N concentration, denitrification reactor formally initially enter anti-nitration reaction process, reactor control system
System extracts a NO per the 10-30 second from online nitric acid salt determinator3 -- N concentration, works as NO3 -- N concentration is less than initial NO3 -- N concentration
1/3 when, stop agitator, carry out next step；
8) anti-nitration reaction pond carries out quiet heavy：After stopping agitator, it is quiet heavy that anti-nitration reaction pond is carried out, and quiet heavy time 15-30 divides
Clock, in quiet heavy period, if water sludge interface is less than upper drainpipe in reactor, drainpipe draining in unlatching, less than lower drainpipe
Lower drainpipe draining is then opened；The quiet heavy time stops draining after terminating, and carries out next step；
9) cultivation cycle of a short-cut denitrification bacterium is completed：After the quiet heavy end in previous step anti-nitration reaction pond, idle 10-30 divides
Zhong Hou, nitrite NO in detection anti-nitration reaction pond2 -- N accumulation rate, i.e. course of reaction nitrite NO2 -The increasing of-N concentration
Whether the value added ratio with nitrate concentration decreasing value is more than 80%, if being not more than, terminating first cultivation cycle, returning step
The operation of rapid 3), carries out next cultivation cycle；Next step is carried out if being more than 80%；
10) terminate quick startup technical process：PH value automatic regulating system is closed, by denitrification reactor automatic control system
Control, carries out next step, starts the normal operation of short-cut denitrification technique；
11) anti-nitration reaction pond water inlet：Automatic controller control starts intake pump, by the liquid level gauge control in anti-nitration reaction pond
Intake pump is closed after entering full water in anti-nitration reaction pond processed, carry out next step；
12) anti-nitration reaction process：Automatic controller starts agitator, and online nitric acid salt determinator records initial NO3 -- N concentration,
Denitrification reactor formally initially enters anti-nitration reaction process, and reactor control system was surveyed from online nitrate per the 10-30 second
Determine instrument and extract a NO3 -- N concentration, works as NO3 -- N concentration is less than initial NO3 -- N concentration 1/3 when, stop agitator, carry out down
One step；
13) anti-nitration reaction pond carries out Jing Chenpaishui：After stopping agitator, it is quiet heavy that anti-nitration reaction pond is carried out, the quiet heavy time
15-30 minute, in quiet heavy period, if water sludge interface is less than less than upper drainpipe, drainpipe draining in unlatching in reactor
Lower drainpipe draining then opened by lower drainpipe；The quiet heavy time stops draining after terminating；Return the 11st) step.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191052A (en) * | 2017-12-28 | 2018-06-22 | 北京中环嘉诚环境工程有限公司 | Carbon source Intelligent adding system for powered and its application in sewage disposal |
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| CN118164613B (en) * | 2024-04-26 | 2024-09-13 | 海南大学 | Device and method for rapidly enriching short-cut denitrification granular sludge driven by double carbon sources |
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