CN111847641A - Short-cut nitrification anaerobic ammonia oxidation reaction device and method for realizing sequential batch/continuous flow - Google Patents
Short-cut nitrification anaerobic ammonia oxidation reaction device and method for realizing sequential batch/continuous flow Download PDFInfo
- Publication number
- CN111847641A CN111847641A CN202010860095.XA CN202010860095A CN111847641A CN 111847641 A CN111847641 A CN 111847641A CN 202010860095 A CN202010860095 A CN 202010860095A CN 111847641 A CN111847641 A CN 111847641A
- Authority
- CN
- China
- Prior art keywords
- reaction
- water
- reaction device
- unit
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
Abstract
A device and a method for realizing sequencing batch/continuous flow short-cut nitrification anaerobic ammonia oxidation reaction, wherein the device comprises an aeration unit for providing aeration; the activated sludge reaction unit is arranged at the bottom of the reaction device; water mixing and contaminant removal; the combined filler reaction unit is arranged above the activated sludge reaction unit and is used for reducing sludge loss; the sponge filler reaction unit is arranged above the combined filler reaction unit and is used for realizing denitrification reaction and reducing sludge loss; and the monitoring unit is used for monitoring the DO value and/or the pH value of the water quality. The operation mode of the reaction device can be switched between the sequencing batch operation mode and the continuous operation mode, so that the operation mode of the reaction device is adjusted to achieve stable and efficient sewage treatment effect aiming at different sewage quality conditions, and the reaction device can be applied to sewage treatment in different ammonia nitrogen concentration ranges.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a device and a method for realizing sequencing batch/continuous flow shortcut nitrification-anaerobic ammonia oxidation reaction.
Background
Currently, with the rapid development of social economy in China, various water pollution conditions emerge endlessly, and the eutrophication phenomenon of water bodies is increasingly serious, which poses serious threat to urban water supply taking surface water as a drinking water source in China; the nitrogen is a main limiting factor causing water eutrophication, and under the background, how to treat the nitrogen by using an efficient and economic method becomes the key point of the technical research of water pollution control engineering.
Since anammox is discovered by Mulder and the like in a fluidized bed with high nitrogen load and low oxygen, researchers develop a plurality of processes using anammox bacteria as a main denitrification way on the basis of combining with short-cut nitrification, SNAD (anaerobic ammonium oxidation and denitrification) is one of the most representative processes, and short-cut nitrification, anammox and denitrification can be synchronously realized by controlling reaction conditions such as Dissolved Oxygen (DO) and the like in an integrated reaction device so as to achieve the purpose of denitrification.
The anaerobic ammonia oxidation technology has unique advantages for treating high ammonia nitrogen and low C/N wastewater, can overcome high ammonia nitrogen load impact, and also has the advantages of no consumption of organic carbon source, reduction of aeration amount, reduction of sludge yield and the like.
Disclosure of Invention
In view of the above, one of the main objects of the present invention is to provide a device and a method for implementing sequential batch/continuous flow shortcut nitrification anaerobic ammonium oxidation reaction, which are intended to at least partially solve at least one of the above technical problems.
In order to achieve the above objects, as one aspect of the present invention, there is provided a partial nitrification anammox reaction apparatus for performing sequential batch/continuous flow, comprising:
an aeration unit for providing aeration;
the activated sludge reaction unit is arranged at the bottom of the reaction device and is used for realizing mud-water mixing and removing pollutants;
the combined filler reaction unit is arranged above the activated sludge reaction unit and is used for reducing sludge loss;
the sponge filler reaction unit is arranged above the combined filler reaction unit and is used for realizing denitrification reaction and reducing sludge loss; and
and the monitoring unit is used for monitoring the DO value and/or the pH value of the water quality.
As another aspect of the present invention, there is also provided a method for implementing batch/continuous flow short-cut nitrification anaerobic ammonia oxidation reaction, which uses the reaction device as described above, and comprises:
carrying out a starting stage of the SNAD process in a sequencing batch operation mode;
the run phase of the SNAD process is performed in a continuous flow run mode.
Based on the technical scheme, the device and the method for realizing the sequential batch/continuous flow shortcut nitrification anaerobic ammonia oxidation reaction have at least one of the following advantages compared with the prior art:
1. the reaction device mainly comprises four reaction units, namely an activated sludge reaction unit, a combined filler reaction unit, a sponge filler reaction unit and a three-phase separator, wherein a water and gas distribution pipe gallery is arranged at the bottom of the reaction device, sewage is uniformly distributed through water distribution pipes at the bottom, and the sewage sequentially passes through the four reaction units and is subjected to NH (ammonia) inlet according to different water4 +Adjusting the concentration of Dissolved Oxygen (DO) in the reaction device by N load to ensure that the reaction device keeps stable partial nitrification and anaerobic ammonia oxidation reaction, and the high ammonia nitrogen sewage pretreated by front-end anaerobic digestion still contains COD (chemical oxygen demand) with certain concentration to ensure that partial denitrification reaction exists in the reaction device and the two types of denitrification reactionThe reaction device has stable and efficient denitrification effect due to the synergistic effect of the nitrogen reaction;
2. in a reaction unit of a three-phase separator filled with sponge filler, the sponge filler has strong sludge interception capability and is combined with the sludge-water separation effect of the three-phase separator, so that the loss of sludge in effluent is kept to the minimum degree, and the device and the method for realizing the sequencing batch/continuous flow integrated shortcut nitrification anaerobic ammonia oxidation reaction can achieve the aim of stable and efficient denitrification;
3. the invention is suitable for treating (COD/NH) with low carbon ratio4 +-N≤2，CN100-10000 mg/L) sewage treatment reaction device and method, which can be applied to the treatment of high ammonia nitrogen wastewater such as garbage percolate, sludge digestive juice and the like;
4. the operation mode of the reaction device can be switched between a sequencing batch operation mode and a continuous operation mode, so that the operation mode of the reaction device is adjusted to achieve a stable and efficient sewage treatment effect aiming at different sewage quality conditions, and the reaction device can be applied to sewage treatment in different ammonia nitrogen concentration ranges (100-10000 mg/L);
5. the main denitrification functional bacteria of the short-cut nitrification anaerobic ammonia oxidation reaction device for realizing sequencing batch/continuous flow integration are anaerobic ammonia oxidation bacteria, although the bacteria have stable and efficient denitrification capability, the requirements on the growth environment are severe, the generation time is as long as 11d, and the sludge flora is difficult to rapidly grow and enrich in a large amount; the in-situ start of the SNAD process is facilitated under the sequencing batch operation mode, and the impact of high ammonia-nitrogen wastewater on a water treatment device can be effectively avoided under the continuous flow operation mode; the reactor can realize high-efficiency and stable denitrification of different ammonia nitrogen concentrations and anaerobic ammonia oxidation operation stages through the conversion of operation modes.
Drawings
FIG. 1 is a schematic structural diagram of a short-cut nitrification anaerobic ammonia oxidation reaction device for realizing sequencing batch/continuous flow integration in the embodiment of the invention.
In the figure, 1-an aeration pipe, 2-a water inlet pipe, 3-an air distribution pipeline, 4-a water distribution pipeline, 5-an activated sludge reaction unit, 6-a combined filler reaction unit, 7-a sponge filler reaction unit, 8-a sequencing batch water outlet, 9-a sludge discharge port, 10-a water quality monitoring water intake port, 11-a three-phase separator, 12-a stainless steel frame structure, 13-a continuous water outlet, 14-an air outlet, 15-a DO/pH detection channel, 16-a water bath constant temperature layer and 17-a submersible circulating pump.
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
The invention discloses a short-cut nitrification anaerobic ammonia oxidation reaction device for realizing sequential batch/continuous flow, which comprises:
an aeration unit for providing aeration;
the activated sludge reaction unit is arranged at the bottom of the reaction device and is used for realizing mud-water mixing and removing pollutants;
the combined filler reaction unit is arranged above the activated sludge reaction unit and is used for reducing sludge loss;
the sponge filler reaction unit is arranged above the combined filler reaction unit and is used for realizing denitrification reaction and reducing sludge loss; and
and the monitoring unit is used for monitoring the DO value and/or the pH value of the water quality.
In some embodiments of the invention, the top of the reaction device is provided with a closing cover;
in some embodiments of the invention, the closure cap is provided with a plurality of vent holes;
in some embodiments of the invention, the closure cap is provided with a DO/pH detection port.
In some embodiments of the present invention, the reaction apparatus further comprises a gas distribution unit for achieving uniform aeration;
in some embodiments of the invention, the gas distribution unit comprises a gas distribution duct;
in some embodiments of the invention, the gas distribution pipes are distributed annularly;
in some embodiments of the present invention, the reaction apparatus further comprises a water distribution unit for achieving uniform water distribution;
in some embodiments of the invention, the water distribution unit comprises a water distribution conduit;
in some embodiments of the invention, the water distribution pipes are distributed annularly.
In some embodiments of the present invention, the reaction apparatus further comprises a sequencing batch drain for draining water in a sequencing batch mode of operation;
in some embodiments of the invention, the reaction apparatus further comprises a sludge discharge port for discharging bottom settled sludge;
in some embodiments of the invention, the reaction apparatus further comprises a three-phase separator for separating sludge and water from the effluent in the continuous mode of operation; the three-phase separator is arranged above the sponge filler reaction unit.
In some embodiments of the invention, the sponge filler reaction unit comprises a water quality monitoring intake for water quality monitoring;
in some embodiments of the invention, the monitoring unit comprises a DO/pH detection channel.
In some embodiments of the present invention, the reaction apparatus further comprises a constant temperature layer for achieving a constant temperature;
in some embodiments of the invention, the reaction device further comprises a plurality of continuous water outlets.
In some embodiments of the invention, the reaction apparatus further comprises a circulating water flow unit for circulating water at the top of the reaction apparatus to the bottom of the reaction apparatus; the circulating water flow unit comprises a submersible circulating pump;
in some embodiments of the invention, the reaction apparatus further comprises a control unit for controlling the aeration unit.
The invention also discloses a short-cut nitrification anaerobic ammonia oxidation reaction method for realizing sequential batch/continuous flow, which adopts the reaction device and comprises the following steps:
carrying out a starting stage of the SNAD process in a sequencing batch operation mode;
the run phase of the SNAD process is performed in a continuous flow run mode.
In some embodiments of the invention, the concentration of ammonia nitrogen in the influent water during the start-up phase of the SNAD process is less than 1000mg/L, such as 950mg/L, 900mg/L, 800mg/L, 700mg/L, 600mg/L, 500mg/L, 400mg/L, 300mg/L, 200mg/L, 100 mg/L;
in some embodiments of the invention, the concentration of ammonia nitrogen in the feed water during the operational phase of the SNAD process is 1000 to 10000mg/L, such as 1000mg/L, 2000mg/L, 3000mg/L, 4000mg/L, 5000mg/L, 6000mg/L, 7000mg/L, 8000mg/L, 9000mg/L, 1000 mg/L.
In some embodiments of the invention, the DO concentration within the reaction apparatus during the start-up phase of the SNAD process is controlled to be 0.4 to 1.0mg/L, such as 0.4mg/L, 0.5mg/L, 0.6mg/L, 0.7mg/L, 0.8mg/L, 0.9mg/L, 1.0 mg/L:
in some embodiments of the invention, the water change ratio in the start-up phase of the SNAD process is 10-60%, e.g., 10%, 20%, 30%, 40%, 50%, 60%;
in some embodiments of the invention, the DO concentration within the reaction apparatus during the operational phase of the SNAD process is controlled to be 0.6 to 1.6mg/L, e.g., 0.6mg/L, 0.7mg/L, 0.8mg/L, 0.9mg/L, 1.0mg/L, 1.2mg/L, 1.3mg/L, 1.4mg/L, 1.5mg/L, 1.6 mg/L;
in some embodiments of the invention, the pH within the reaction apparatus is controlled to be 7.5 to 8.3, for example 7.5, 7.6, 7.8, 7.9, 8.0, 8.1, 8.2, 8.3;
in some embodiments of the invention, the feed water C/N ratio in the operational stage of the SNAD process is 0.15 to 0.3, such as 0.15, 0.18, 0.2, 0.22, 0.25, 0.28, 0.3;
in some embodiments of the invention, the hydraulic residence time in the operational phase of the SNAD process is from 48 to 72h, for example 48h, 50h, 55h, 60h, 65h, 70h, 72 h.
In an exemplary embodiment, as shown in fig. 1, the device for implementing batch/continuous flow integrated shortcut nitrification anaerobic ammonia oxidation of the present invention comprises: the device comprises an aeration pipe 1, a water inlet pipe 2, an air distribution pipeline 3, a water distribution pipeline 4, an activated sludge reaction unit 5, a combined filler reaction unit 6, a sponge filler reaction unit 7, a sequencing batch water outlet 8, a sludge discharge port 9, a water quality monitoring water intake 10, a three-phase separator 11, a stainless steel frame structure 12, a continuous water outlet 13, an exhaust hole 14, a DO/pH detection channel 15, a water bath constant temperature layer 16 and a submersible circulating pump 17.
Each filler reaction unit in the reaction device is fixed by a stainless steel frame; the closed cover on the top of the reaction device is fixed with the three-phase separator 11, a plurality of exhaust holes 14 are reserved on the closed cover, and a DO/pH detection channel port is arranged in the middle of the closed cover, so that a probe of a monitoring instrument can conveniently extend into the closed cover, and accurate operation parameters of each reaction unit can be obtained.
The reaction device is made of stainless steel materials, and the total effective volume is 4.3m3The device comprises five main parts, namely a bottom water distribution and air distribution pipe gallery, an activated sludge reaction unit, a sponge filler reaction unit, a combined filler reaction unit and a sponge filler and three-phase separator reaction unit; a constant temperature water bath layer with the thickness of 5cm is arranged outside the reaction device, and the water temperature of the interlayer is kept constant at (28 +/-1) DEG C by circulating water flow of a circulating pump. The reaction device is wrapped by an opaque heat-insulating layer to avoid the influence of illumination on the anaerobic ammonia oxidation bacteria.
The bottom of the reaction device is provided with a pipe gallery, wherein the water distribution pipeline 3 and the gas distribution pipeline 4 are both distributed in a ring shape, and water and gas are fed in and evenly distributed and aerated through the water distribution pipeline 4 and the gas distribution pipeline 3.
The activated sludge reaction unit 5 has the advantages of high mass transfer efficiency and high reaction rate; the sponge filler reaction unit 7 has the advantages of large sludge attachment amount and strong sludge interception capability; the combined filler reaction unit 6 also has the advantages of certain sludge retention capacity, large reaction contact surface area, difficult blockage, high oxygen utilization rate and the like.
The bottom of the reaction device is provided with an activated sludge reaction unit 5, so that good mud-water mixing can be realized, and pollutants can be quickly removed in the reaction unit 5; the middle part of the reaction device is provided with the combined filler reaction unit 6, and the reaction contact surface area of the combined filler is large, so that the oxygen utilization rate is high, the reaction device has stable and efficient denitrification efficiency, part of floating sludge of the activated sludge reaction unit is intercepted, and the sludge loss is reduced; the top of the reaction device is provided with a sponge filler reaction unit 7 and a three-phase separator 11, and under the double sludge interception action of the sponge filler and the three-phase separator, the effluent SS (suspended solid) under the continuous operation mode is ensured to reach the standard, and the sludge loss is reduced. The combined filler in the middle can effectively intercept the sludge falling off from the upper reaction unit of the reaction device, and the sludge loss generated by water outlet in the sequencing batch operation mode is reduced.
And a sequencing batch water outlet 8 for discharging water of the reaction device in the sequencing batch operation mode.
The sludge discharge port 9 is used for discharging sludge deposited at the bottom of the reaction device, and the water quality monitoring intake 10 is used for monitoring a sampling port in the reaction device when the water quality index is indicated.
The three-phase separator 11 can separate the sludge and water of the effluent of the reaction device in a continuous operation mode, and reduce the sludge loss generated by the effluent.
The reaction device is characterized in that a stainless steel frame structure 12 is adopted, sponge fillers and combined filler reaction units in the reaction device all adopt a stainless steel frame as a structural carrier, a three-phase separator 11 on the upper portion of the reaction device and a sealing cover are integrated, the three-phase separator and 4 continuous water outlets on the upper portion of the reaction device are connected through flanges, the three-phase separator and the sealing cover on the upper portion of the reaction device can be opened and lifted at any time, and the filler reaction units in the reaction device can be lifted to discharge water so as to be convenient to assemble and maintain.
The stainless steel frame structure can be used as a main structure body of each filler reaction unit, wherein a layer of silk screen with the aperture slightly smaller than the particle size of the sponge filler is required to be additionally arranged on the stainless steel frame structure of the sponge filler reaction unit so as to realize the integrity of the sponge filler reaction unit;
and 4 continuous water outlets are formed in the upper part of the reaction device, the supernatant separated by the three-phase separator is discharged through the continuous water outlets, and each continuous water outlet is provided with a switch valve so as to control the water outlet liquid level in the reaction device.
An exhaust port 14 for generating N by denitrification reaction in the reaction apparatus2In the closure capA plurality of exhaust holes are arranged to ensure normal air pressure in the reaction device.
DO/pH detection channel 15 sets up a water quality testing channel at the reaction unit center to make things convenient for the electronic instrument probe to stretch into, and the passageway pipe wall is the design of poroid, in order to guarantee the accuracy of measuring quality of water.
A water bath constant temperature layer 16, which circulates the water in the water bath layer through an externally provided circulation pump, and further keeps the water temperature in the reaction device at (32 +/-1) ° C. The reaction device is wrapped by an opaque heat-insulating layer to avoid the influence of illumination on the anaerobic ammonia oxidation bacteria.
The submersible circulating pump 17 is provided with four groups of circulating water flow devices inside the reaction device, water at the top of the reaction device is circulated to the bottom of the reaction device, so that the water quality in the reaction device can be promoted to be uniformly mixed, and the sludge accumulated at the upper part can be circulated to the bottom, thereby reducing the sludge loss.
The aeration pump is controlled by the PLC system to realize intermittent aeration and aeration-stop time ratio (T)Aeration of air/TWithout exposure to the sun，TAeration of air1h) was adjusted according to the operating conditions in the reaction apparatus.
The reaction device designed by the invention jointly applies an activated sludge method and two filler biomembrane methods, and carries out technical verification through a small test that sponge fillers and combined fillers are respectively used as biomembrane carriers to start an SNAD process, wherein the critical DO value of the SNAD reaction device for the sponge fillers is 1.6mg/L, the critical DO value of the SNAD reaction device for the combined fillers is 1.4mg/L, the operating exposure-stop time ratio is 2, and the joint application of the two fillers can be realized due to the smaller difference of the critical DO values.
The reaction apparatus can be switched between two modes of operation, continuous flow and sequencing batch. The continuous flow is suitable for treating high concentration (1000-10000mg/L) ammonia Nitrogen (NH)4 +N) sewage which has stronger impact load resistance capacity by controlling the inflow rate of the sewage; the sequencing batch reactor is suitable for treating ammonia nitrogen sewage with lower concentration (less than 1000mg/L, such as 100-1000mg/L, not including 1000mg/L), and the water changing ratio is regulated to maintain the water inlet concentration in certain range and to maintain the stability of the reactorAnd (5) operating constantly.
In some embodiments of the present invention, the method for implementing the batch-wise partial nitrification-anaerobic ammoxidation reaction by using the above apparatus comprises the following specific steps:
1. sewage is rapidly pumped into a reaction device through a water inlet pipe 2 and a water distribution pipeline 4 at the bottom by a water inlet pump, an aeration pipe 1 and a gas distribution pipeline 3 are arranged at the bottom, uniform aeration is carried out at the bottom of the reaction device, and a Programmable Logic Controller (PLC) system controls and controls the aeration pump to realize intermittent aeration so as to regulate and control the DO value in the reaction device to be 0.4-1.0 mg/L;
2. after the online water quality monitoring system judges that the water quality in the reactor reaches the standard, the PLC system controls a drain valve to discharge water from a sequencing batch type drain outlet 8 at the middle lower part of the reaction device, and the water changing ratio (V)Row board/VEffective volume) 10-60%, the water inlet and outlet processes are completed within 2 hours, and the whole operation process is controlled by a PLC system to realize the automatic operation of the reaction device;
in some embodiments of the present invention, the method for implementing continuous flow shortcut nitrification-anaerobic ammoxidation reaction by using the above apparatus includes the following specific steps:
the sewage is still pumped into the reaction device by the water inlet pump through the water inlet pipe 2 at the bottom, the sewage is distributed uniformly by the water distribution pipe 4, then sequentially passes through an activated sludge reaction unit 5, a combined filler reaction unit 6, a sponge filler reaction unit 7 and a three-phase separator 11, the DO concentration (0.6-1.6mg/L) and the pH value (7.5-8.3) in the reaction device are regulated and controlled by adjusting the aeration quantity of the intermittent aeration and adding alkali liquor, so that three reaction units in the reaction device have different degrees of short-cut nitrification, anaerobic ammonia oxidation and denitrification reactions, wherein, anaerobic ammoxidation is taken as a main denitrification way, so that the reaction device has stable and high-efficiency denitrification effect, sewage rises to the upper part of the reaction device after reaction, under the action of the sponge filler and the double-retention sludge of the three-phase separator, the supernatant is discharged through the continuous water outlet 13 in an overflowing manner.
The technical solution of the present invention is further illustrated by the following specific embodiments in conjunction with the accompanying drawings. It should be noted that the following specific examples are given by way of illustration only and the scope of the present invention is not limited thereto.
Referring to fig. 1, the method for implementing the sequencing batch/continuous flow integrated shortcut nitrification anaerobic ammonia oxidation reaction by using the device of fig. 1 has the following specific implementation flow:
firstly, starting an SNAD process in a sequencing batch mode:
the pig breeding wastewater subjected to mesophilic anaerobic digestion and traditional nitrification and denitrification treatment is used as the inlet water of the stage and is pumped into the reaction device through the water inlet pipe 2 by the water inlet pump, the water distribution pipeline 4 is arranged at the bottom of the biological pond, the aeration and stop time of the aeration pump is controlled by the PLC system, and then the DO environments of the reaction device in different reaction stages are regulated and controlled, and the efficient and stable operation of the reaction device is realized. The whole operation process of the reaction device is monitored in real time by a water quality data acquisition and monitoring control System (SCADA).
In the stage of starting nitrosation, the DO concentration is controlled to be 0.6-0.8 mg/L, and NH is fed into water4 +The concentration of N is 220-300 mg/L, the aeration-stop time ratio is 3, HRT is 20h, and stable operation is carried out for 33d, so that stable nitrosation and NH are successfully realized in the reaction device4 +The removal rate of-N can be kept at about 50%, and the accumulation rate of nitrite can reach more than 80%.
In the starting stage of the SNAD process, 100L of anaerobic ammonia oxidation sludge is inoculated into a reaction device, the concentration of the inoculated sludge is 9-10 g/L, the DO concentration is controlled to be increased from 0.2mg/L to 0.6mg/L in a staged manner, the aeration-stop time ratio is 1, and NH in inlet water4 +The concentration of N is 375-452 mg/L, the C/N ratio is 0.5, HRT (hydraulic retention time) is gradually decreased from 36h to 8h, the start of the SNAD process in the reaction device is realized after 135d of stable operation, the total nitrogen removal rate is stabilized at more than 90 percent, and the total nitrogen removal load is up to 0.74kg/m3·d。
Then realizing the stable operation of the SNAD process in a continuous operation mode:
the pig breeding wastewater pretreated by mesophilic anaerobic digestion is pumped into a reaction device by a water inlet pump through a water inlet pipe 2 at the bottom, and the sewage is uniformly distributed through a water distribution pipe 4Water distribution, then sequentially passing through an activated sludge reaction unit 5, a combined filler reaction unit 6, a sponge filler reaction unit 7 and a three-phase separator 11, regulating and controlling DO concentration (0.6-1.6mg/L) and pH (7.5-8.3) value in the reaction device by regulating aeration quantity of intermittent aeration and adding alkali liquor, and feeding water NH4 +The concentration of-N is 1750-4500 mg/L, the C/N ratio is 0.15-0.3, HRT is stabilized at 48-72h, the total nitrogen removal rate is stabilized at more than 80 percent, and the total nitrogen removal load is up to 1.87kg/m3·d。
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A device for realizing short-cut nitrification anaerobic ammonia oxidation reaction of sequential batch/continuous flow comprises:
an aeration unit for providing aeration;
the activated sludge reaction unit is arranged at the bottom of the reaction device and is used for realizing mud-water mixing and removing pollutants;
the combined filler reaction unit is arranged above the activated sludge reaction unit and is used for reducing sludge loss;
the sponge filler reaction unit is arranged above the combined filler reaction unit and is used for realizing denitrification reaction and reducing sludge loss; and
and the monitoring unit is used for monitoring the DO value and/or the pH value of the water quality.
2. The reactor apparatus according to claim 1,
the top of the reaction device is provided with a sealing cover;
wherein, a plurality of exhaust holes are arranged on the sealing cover;
wherein, a DO/pH detection channel port is arranged on the closing cover.
3. The reactor apparatus according to claim 1,
the reaction device also comprises a gas distribution unit for realizing uniform aeration;
the gas distribution unit comprises a gas distribution pipeline;
wherein, the gas distribution pipeline is distributed in a ring shape;
the reaction device also comprises a water distribution unit for realizing uniform water distribution;
the water distribution unit comprises a water distribution pipeline;
wherein, the water distribution pipeline is distributed in a ring shape.
4. The reactor apparatus according to claim 1,
the reaction device also comprises a sequencing batch water outlet used for discharging water in a sequencing batch operation mode;
the reaction device also comprises a sludge discharge port for discharging bottom deposited sludge;
the reaction device also comprises a three-phase separator for separating sludge and water from the effluent in the continuous operation mode; the three-phase separator is arranged above the sponge filler reaction unit.
5. The reactor apparatus according to claim 1,
the sponge filler reaction unit comprises a water quality monitoring water intake for water quality monitoring;
the monitoring unit comprises a DO/pH detection channel.
6. The reactor apparatus according to claim 1,
the reaction device also comprises a constant temperature layer for realizing constant temperature;
the reaction device also comprises a plurality of continuous water outlets.
7. The reactor apparatus according to claim 1,
the reaction device also comprises a circulating water flow unit for circulating water at the top of the reaction device to the bottom of the reaction device; the circulating water flow unit comprises a submersible circulating pump;
the reaction device further comprises a control unit for controlling the aeration unit.
8. A method for implementing sequential batch/continuous flow short-cut nitrification anaerobic ammonia oxidation reaction, which adopts the reaction device of any one of claims 1 to 7, and comprises the following steps:
carrying out a starting stage of the SNAD process in a sequencing batch operation mode;
the run phase of the SNAD process is performed in a continuous flow run mode.
9. The method of claim 1,
the ammonia nitrogen concentration in the inlet water in the starting stage of the SNAD process is less than 1000 mg/L;
the concentration of ammonia nitrogen in the influent water during the operational phase of the SNAD process is between 1000 and 10000 mg/L.
10. The method of claim 1,
controlling the DO concentration in the reaction device to be 0.4-1.0mg/L in the starting stage of the SNAD process;
the water change ratio in the starting stage of the SNAD process is 10-60%;
controlling the DO concentration in the reaction device to be 0.6-1.6mg/L in the operation stage of the SNAD process;
controlling the pH value in the reaction device to be 7.5-8.3 in the operation stage of the SNAD process;
the C/N ratio of inlet water in the operation stage of the SNAD process is 0.15-0.3;
the hydraulic residence time in the operational phase of the SNAD process is from 48 to 72 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860095.XA CN111847641A (en) | 2020-08-24 | 2020-08-24 | Short-cut nitrification anaerobic ammonia oxidation reaction device and method for realizing sequential batch/continuous flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860095.XA CN111847641A (en) | 2020-08-24 | 2020-08-24 | Short-cut nitrification anaerobic ammonia oxidation reaction device and method for realizing sequential batch/continuous flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111847641A true CN111847641A (en) | 2020-10-30 |
Family
ID=72966927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010860095.XA Pending CN111847641A (en) | 2020-08-24 | 2020-08-24 | Short-cut nitrification anaerobic ammonia oxidation reaction device and method for realizing sequential batch/continuous flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111847641A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645441A (en) * | 2020-11-29 | 2021-04-13 | 山西省交通新技术发展有限公司 | Operation early warning system and method for dispersed micro sewage treatment device |
-
2020
- 2020-08-24 CN CN202010860095.XA patent/CN111847641A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645441A (en) * | 2020-11-29 | 2021-04-13 | 山西省交通新技术发展有限公司 | Operation early warning system and method for dispersed micro sewage treatment device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102557356B (en) | Process and method for denitrification and phosphorus removal of municipal sewage by half shortcut nitrification and anaerobic ammonium oxidation | |
| CN100422096C (en) | Apparatus and method of treating city domestic refuse percolation liquid by two-stage UASB+A/O technique | |
| KR20130003522A (en) | Treatment system for waste water | |
| CN110395851B (en) | High-altitude town sewage treatment method based on nitrogen and phosphorus capture and completely autotrophic nitrogen removal | |
| CN106145506A (en) | The apparatus and method of coal chemical industrial waste water Anammox coupling heterotrophic denitrification denitrogenation | |
| KR102311712B1 (en) | Shortcut Nitrogen Removal Process and System by using Partial Nitritation in SBBR(Sequencing Batch Biofilm Reactor) with Media | |
| CN113233592B (en) | Treatment device and method for realizing synchronous deep denitrification and decarbonization of advanced landfill leachate and domestic sewage | |
| CN106006956A (en) | Device and method for synchronously treating high-concentration NO3--N waste water, sludge digestion liquid and municipal sewage | |
| CN105712584A (en) | Denitrification method and device for synchronously treating livestock farm biogas liquid wastewater and municipal sewage through combination of segmented partial nitrification and anaerobic ammonia oxidation | |
| CN111153508A (en) | Multi-stage treatment process for kitchen sewage | |
| WO2020133553A1 (en) | Method for treating high ammonia-nitrogen wastewater of the coal chemical industry with reinforced sbr process pool | |
| CN102491597B (en) | Method for treating high-concentration nitrogenous organic wastewater | |
| CN109867352B (en) | Method for realizing autotrophic deep denitrification of nitrogen-containing wastewater by utilizing anaerobic MBR (membrane bioreactor) | |
| Yangin et al. | A new process for the combined treatment of municipal wastewaters and landfill leachates in coastal areas | |
| CN113845224A (en) | Process method suitable for treating sewage with low carbon-nitrogen ratio | |
| CN111847641A (en) | Short-cut nitrification anaerobic ammonia oxidation reaction device and method for realizing sequential batch/continuous flow | |
| CN103214156B (en) | Surplus sludge fermenting and coupling denitrification device and method in condition of low dissolved oxygen | |
| CN111592104A (en) | Short-range efficient biological treatment device and treatment method for kitchen waste digestive juice | |
| CN102491587A (en) | Method and device for treating early urban landfill leachate | |
| CN109354167B (en) | Fast starting method of high-efficiency autotrophic nitrogen removal system based on MBBR | |
| CN111573833A (en) | Anaerobic ammonia oxidation coupling methane oxidation process control method for high-concentration ammonia nitrogen organic wastewater methanogenesis treatment system | |
| CN212334747U (en) | Short-cut nitrification anaerobic ammonia oxidation reaction device for realizing sequence batch/continuous flow | |
| CN207002529U (en) | Pyrazolone production wastewater treatment device | |
| CN113184996B (en) | Self-control-based integrated autotrophic nitrogen removal coupled biological phosphorus removal method and device | |
| CN105541025B (en) | A kind of refinery Deep Processing Method of Waste Water from FGD based on BESI technologies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |