CN108328726A - A kind of circulating EGSB reaction units and the sewage water treatment method based on the device - Google Patents
A kind of circulating EGSB reaction units and the sewage water treatment method based on the device Download PDFInfo
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- CN108328726A CN108328726A CN201810069457.6A CN201810069457A CN108328726A CN 108328726 A CN108328726 A CN 108328726A CN 201810069457 A CN201810069457 A CN 201810069457A CN 108328726 A CN108328726 A CN 108328726A
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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
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Abstract
The present invention relates to a kind of circulating EGSB reaction units and based on the sewage water treatment method of the device, device includes reaction member, gas separation unit and wastewater influent unit, reaction member includes reactor shell and the sludge collecting mechanism being arranged in reactor enclosure body, gas separation unit includes the separator for being arranged outside reactor shell and being connected with sludge collecting mechanism, the bottom of the separator is connected with the bottom of reactor shell, top offers exhaust outlet, and wastewater influent unit is connected with separator；When sewage disposal, the sewage part after denitrogenation processing is discharged by reactor shell, and another part is mingled with anaerobic ammonium oxidation sludge, and enters in separator through sludge collecting mechanism.Compared with prior art, the present invention realizes the collection maximized to floating sludge, avoids high activity sludge in the aggregation, delay and corruption of non-reaction zone, improves the denitrification efficiency of anaerobic ammonium oxidation sludge and may advantageously facilitate anaerobic ammonium oxidation sludge granulating.
Description
Technical field
The invention belongs to technical field of sewage, are related to a kind of circulating EGSB reaction units and the dirt based on the device
Method for treating water.
Background technology
The discovery of anaerobic ammonia oxidizing bacteria provides new selection and new concept for the biological denitrificaion of sewage.The anaerobism ammonia of sewage
Oxidized sludge denitrification process carries out usually in anaerobic reactor, and widely used anaerobic reactor is UASB (up flow types
It is anaerobic mud bed) reactor, the operation and maintenance of such anaerobic reactor are relatively easy, and continuous flow operational mode keeps it more suitable
In the treatment sewage that reply continuously generates.EGSB (expanded granular sludge bed) reactor is developed on the basis of UASB reactors
Improved third generation anaerobic reactor, because it has the characteristics that simple in structure, load is high, wide adaptability, by universal both at home and abroad
It praises highly.
However, when running anaerobic ammonia oxidation process in existing EGSB reactors, since anaerobic ammonia oxidizing bacteria proliferation is slow
Slowly, the nitrogen amount generated when and nitrogen load is high is larger and violent, usually will appear more serious Mud up-floating problem, and then cause
Sludge accumulation, corruption or loss etc., affect the long-time stability of anaerobic ammonia oxidation process system nitrogen removal performance.Therefore, there is an urgent need for
For the characteristic of anaerobic ammonium oxidation sludge, the configuration of design optimization anaerobic reactor, Anammox denitrogenation is better achieved
Efficiency promotes the application of anaerobic ammonia oxidation process.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of circulating EGSB is anti-
Answer device and the sewage water treatment method based on the device.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of circulating EGSB reaction units, the device include reaction member, gas separation unit and wastewater influent unit,
The reaction member includes reactor shell and the sludge collecting mechanism being arranged in reactor enclosure body, the gas point
Include the separator for being arranged outside reactor shell and being connected with sludge collecting mechanism from unit, the bottom of the separator with
The bottom of reactor shell is connected, and top offers exhaust outlet, and the wastewater influent unit is connected with separator.
The separator is three phase separator as a preferred technical solution,.
Further, the reactor shell include the rectification section being from bottom to top sequentially connected, conversion zone, extension diameter section and
Section is drained, the bottom of the sludge collecting mechanism is located in extension diameter section, and top is connected with separator, the separator
Bottom is connected with rectification section.
Circulating pump is equipped between the bottom and rectification section of the separator as a preferred technical solution,.
Further, the tubulose that the conversion zone and draining Duan Juncheng are vertically arranged, and the draining section is interior
Diameter is more than the internal diameter of conversion zone.
The ratio of height to diameter of the reactor shell is 25-35, the Gao Jing of the conversion zone as a preferred technical solution,
Than for 22-28.
It is vertically uniformly distributed on the conversion zone as a preferred technical solution, to have multiple sample taps.
The draining section is equipped with draining section water outlet as a preferred technical solution,.
Further, the sludge collecting mechanism includes the sludge collecting hood and setting that bottom is arranged in extension diameter section
Sludge circulation delivery pipe at the top of sludge collecting hood between separator.
The sludge collecting hood is immersed in liquid stream as a preferred technical solution,.Sludge collecting hood not only has most
Bigization collects mud scum and gas, the effect for shunting partially liq, also has rectified action.
The height of the sludge collecting hood is less than the height of draining section water outlet as a preferred technical solution,.
One end of the sludge circulation delivery pipe is connected with the top of sludge collecting hood as a preferred technical solution,
Logical, the other end is connected with the side of separator.
Further, the rectification section is in funnel-form, and the sludge collecting hood is in inverted funnel-form.Reactor enclosure
The funnel-form rectification section of body bottom designs, and is oppositely arranged with the sludge collecting hood of top inverted funnel shape, makes liquid stream in reactor enclosure
Internal portion forms linear flow field structure.
Further, the gas separation unit further includes water seal tank, air shooter and exhaust pipe, the gas
One end of delivery pipe is connected with exhaust outlet, and the other end is plugged in water seal tank, and the exhaust pipe is arranged on the top of water seal tank
Portion, and be connected with the inside of water seal tank.
Further, the wastewater influent unit includes cesspool and sewage water inlet pipe, one end of the sewage water inlet pipe
It is connected with cesspool, is connected at the top of the other end and separator.Sewage inlet is arranged on the top of separator, makes to follow
Ring liquid stream is further enhanced hydraulic shear effect by water inlet liquid flow impact.
The sewage water inlet pipe is pumped equipped with wastewater influent as a preferred technical solution,.
The separator makes liquid stream exist using inside spin design and the operational mode that drops as a preferred technical solution,
By unexpected increased water conservancy shear action in three phase separator.
A kind of sewage water treatment method based on the device, this method are：Treatment sewage in wastewater influent unit
Enter in reactor enclosure body through separator, and is from bottom to top flowed in reactor enclosure body, the anaerobism in simultaneous reactions device shell
Ammoxidation sludge carries out denitrogenation processing to treatment sewage；A sewage part after denitrogenation processing is discharged by reactor shell, separately
A part is mingled with anaerobic ammonium oxidation sludge, and enters in separator through sludge collecting mechanism, with the pending dirt in separator
Water mixes；Gas in separator is discharged by exhaust outlet.The sewage for being mingled with anaerobic ammonium oxidation sludge enters in separator, through falling
Water acts on and the impact of water inlet, muddy water mixed solution and gas efficiently separate, and gas enters water seal tank through air shooter, and muddy water is mixed
Liquid is closed to be flowed into circulating pump by separator bottom and recycled again.
Further, in the reactor shell, the volatile sludge concentration (MLVSS) of anaerobic ammonium oxidation sludge >=
3000mg/L。
Further, in the reactor shell, the upflow velocity of liquid stream is 4-5m/h, hydraulic detention time (HRT)
For 15-20h, reaction temperature is 30-35 DEG C.
In the present invention, by controlling the upflow velocity of liquid stream, keep dispersion and the relatively small cotton-shaped Anammox of density dirty
Mud enters in sludge collecting mechanism, realizes the purpose of sludge recycling；Promote granule sludge by creating rational flow field structure
It is formed.In addition, specific linear fluid structure can form longer annular streamline rail compared in the reactor shell of larger ratio of height to diameter
Mark increases the effective collision probability between sludge, to promote the granulating of sludge, forms granule sludge.
Compared with prior art, the invention has the characteristics that：
1) the reasonable setting of separator makes hydraulic shear effect maximize, and efficient gas removal is realized, after removing gas
Muddy water mixed solution the main reaction region in conversion zone can be timely and effectively returned to via circulation line, avoid high abundance high activity
The loss of mud scum or aggregation, delay and corruption in non-reaction zone, reach maintenance or increase system and effectively work the mesh of biomass
, the denitrification efficiency of anaerobic ammonium oxidation sludge can be effectively improved；
2) the sludge collecting hood of the inverted funnel shape above conversion zone, it is corresponding with the funnel-form rectification section of conversion zone bottom,
In upper and lower symmetrical structure, the flow field structure of optimization can be formed, is conducive to the pelletising process of sludge, is maximized to floating sludge
Collect, can the sludge of effectively lifting device withhold and ability and promote granular sludge process；
3) realize and maximize collection to floating sludge, avoid high activity sludge non-reaction zone aggregation, be detained and
Corruption, improves the denitrification efficiency of anaerobic ammonium oxidation sludge in reaction member and may advantageously facilitate anaerobic ammonium oxidation sludge particle
Change.
Description of the drawings
Fig. 1 is the overall structure diagram of circulating EGSB reaction units in embodiment 1；
Fig. 2 is the scanning electron microscope of anaerobic ammonium oxidation granular sludge in circulating EGSB reaction units in embodiment 1
(SEM) collection of illustrative plates, wherein Fig. 2-a are shown as granule sludge extexine, and it is aobvious that Fig. 2-b are shown as granule sludge extexine EPS, Fig. 2-c
It is shown as the heterotroph of section part proliferation, Fig. 2-d are shown as granule sludge endosexine, and Fig. 2-e are shown as the heterotrophism being proliferated at channel
Bacterium, Fig. 2-f are shown as spherical anaerobic ammonia oxidizing bacteria；
Fig. 3 is that the nitric efficiency of circulating EGSB reaction units and routine EGSB reactors in embodiment 1 compares collection of illustrative plates；
Description of symbols in figure：
1-exhaust pipe, 2-water seal tanks, 3-cesspools, 4-wastewater influents pump, 5-circulating pumps, 6-sewage water inlet pipes,
7-sample taps, 8-sludge collecting hoods, 9-draining section water outlets, 10-separators, 11-reactor shells, 1101-rectifications
Section, 1102-conversion zones, 1103-extension diameter sections, 1104-draining sections, 12-sludge circulation delivery pipes, 13-air shooters.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment 1：
A kind of circulating EGSB reaction units as shown in Figure 1, which includes reaction member, gas separation unit and dirt
Water inlet unit, reaction member include reactor shell 11 and the sludge collecting mechanism being arranged in reactor shell 11, gas
Body separative element includes the separator 10 being arranged reactor shell 11 outside and being connected with sludge collecting mechanism, the separator
10 bottom is connected with the bottom of reactor shell 11, and top offers exhaust outlet, wastewater influent unit and 10 phase of separator
Connection.
Wherein, reactor shell 11 includes rectification section 1101, conversion zone 1102, the extension diameter section being from bottom to top sequentially connected
1103 and draining section 1104, the bottom of sludge collecting mechanism is located in extension diameter section 1103, and top is connected with separator 10, detaches
The bottom of device 10 is connected with rectification section 1101.Circulating pump 5 is equipped between the bottom and rectification section 1101 of separator 10.Conversion zone
1102 and draining section 1104 be in the tubulose that is vertically arranged, and the internal diameter for draining section 1104 is more than the internal diameter of conversion zone 1102.
It is vertically uniformly distributed on conversion zone 1102 to have multiple sample taps 7.It drains section 1104 and is equipped with draining section water outlet 9.
Sludge collecting mechanism includes that the sludge collecting hood 8 that bottom is arranged in extension diameter section 1103 and setting are collected in sludge
Sludge circulation delivery pipe 12 between 8 top of cover and separator 10.Rectification section 1101 is in funnel-form, and sludge collecting hood 8 is in inversion
Funnel-form.
Gas separation unit further includes water seal tank 2, air shooter 13 and exhaust pipe 1, one end of air shooter 13 with
Exhaust outlet is connected, and the other end is plugged in water seal tank 2, and exhaust pipe 1 is arranged at the top of water seal tank 2, and in water seal tank 2
Portion is connected.
Wastewater influent unit includes cesspool 3 and sewage water inlet pipe 6, and one end of the sewage water inlet pipe 6 is connected with cesspool 3
Logical, the other end is connected with the top of separator 10.Sewage water inlet pipe 6 is equipped with wastewater influent and pumps 4.Separator uses inside spin
Design and drop operational mode make liquid stream in three phase separator by unexpected increased water conservancy shear action.
Jointly with routine EGSB reactors (N-EGSB) by the circulating EGSB reaction units (MC-EGSB) in the present embodiment
It runs and is compared.The reaction volume of N-EGSB and MC-EGSB is 5L, and ratio of height to diameter is 30.It is (sequencing batch activated from SBR
Sludge) in female reactor in inoculation anaerobic ammonium oxidation sludge to MC-EGSB and N-EGSB, in the identical situation of control parameter
Two reaction units of lower operation：Identical starting MLVSS (3000mg/L), identical water inlet substrate concentration, identical upper up-flow
Fast (v=4.5m/h), identical hydraulic detention time (HRT=16h), identical running temperature (31 DEG C).
In postrun first 7 days of device, NH4 +- N and NO2 -- N influent concentrations are about 30mg/L；It is right after device is run 7 days
Water inlet, which is carried out, exposes the operation of nitrogen deoxygenation, the equal fast lifting of nitric efficiency of two reaction units to 80% or so；It is negative in corresponding nitrogen
Device is continued to run under lotus 5 days, nitric efficiency maintains 80% or more；NH in then intaking4 +- N and NO2 -- N is improved to about
60mg/L continues to run with device 45 days under the nitrogen load；Later, continue NH in intaking4 +- N and NO2 -- N is improved to about
120mg/L, and run to 170 days or so, complete monitoring in 6 months nearly to the nitrogen removal performance of two reaction units.Finally, with
The morphological feature of SEM characterized by techniques MC-EGSB its anaerobic ammonium oxidation granular sludge after longtime running, to investigate granular sludge
Effect, and analyze compare continuous service nearly 6 months after, the difference of two reactor denitrification efficiencies.
The SEM spectrum of anaerobic ammonium oxidation granular sludge is as shown in Figure 2 in MC-EGSB, wherein the anaerobism ammonia in MC-EGSB
Oxidation particle sludge extexine (Fig. 2-a, Fig. 2-b) is covered by thick EPS；Endosexine (Fig. 2-d) then mainly by der Pilz and
Rod bacterium covers, and contains a small amount of anaerobic ammonia oxidizing bacteria Extracellular polymers (EPS)；Master at particle section and inside and outside interface channel
It to be occupied by spherical anaerobic ammonia oxidizing bacteria, while also have a small amount of der Pilz proliferation (Fig. 2-c, Fig. 2-e, Fig. 2-f).In MC-
In EGSB, floating sludge or free anaerobic ammonia oxidizing bacteria can return main reaction region in time via external circulating system, this part height is lived
Property mud scum or free anaerobic ammonia oxidizing bacteria can adhere to again after returning to main reaction region and be proliferated in have mud granule on, or
It engages and is proliferated to form new granule sludge with other sludge flcos in system, effectively facilitated the particle of anaerobic ammonium oxidation sludge
Change process.In addition, from the figure 3, it may be seen that obviously differentiation, final MC-EGSB occur after 70 days for the denitrification efficiency of two reaction units
Denitrification efficiency be significantly better than N-EGSB, about the 1.25 of N-EGSB times.It can be seen that the MC-EGSB in the present embodiment can be shown
It writes and improves anaerobic ammonium oxidation sludge denitrification efficiency and effectively facilitate granular sludge.
Embodiment 2：
A kind of sewage water treatment method based on circulating EGSB reaction units in embodiment 1 is：In wastewater influent unit
Treatment sewage enters through separator 10 in reactor shell 11, and is from bottom to top flowed in reactor shell 11, while anti-
The anaerobic ammonium oxidation sludge in device shell 11 is answered to carry out denitrogenation processing to treatment sewage；A sewage part after denitrogenation processing by
Reactor shell 11 is discharged, and another part is mingled with anaerobic ammonium oxidation sludge, and enters in separator 10 through sludge collecting mechanism,
It is mixed with the treatment sewage in separator 10；Gas in separator 10 is discharged by exhaust outlet.
Wherein, in reactor shell 11, volatile sludge concentration >=3000mg/L of anaerobic ammonium oxidation sludge, liquid stream it is upper
Up-flow speed is 4m/h, and hydraulic detention time 20h, reaction temperature is 30 DEG C.
Embodiment 3：
In the present embodiment, in reactor shell 11, the volatile sludge concentration of anaerobic ammonium oxidation sludge is 3000mg/L, liquid
The upflow velocity of stream is 5m/h, and hydraulic detention time 15h, reaction temperature is 35 DEG C, remaining is the same as embodiment 2.
Embodiment 4：
In the present embodiment, in reactor shell 11, the volatile sludge concentration of anaerobic ammonium oxidation sludge is 3500mg/L, liquid
The upflow velocity of stream is 4.5m/h, and hydraulic detention time 17h, reaction temperature is 32 DEG C, remaining is the same as embodiment 2.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be the present invention's
Within protection domain.
Claims (10)
1. a kind of circulating EGSB reaction units, which is characterized in that the device includes reaction member, gas separation unit and sewage
Inlet unit, the reaction member include that reactor shell (11) and the sludge being arranged in reactor shell (11) are collected
Mechanism, the gas separation unit include setting in point that reactor shell (11) is external and is connected with sludge collecting mechanism
From device (10), the bottom of the separator (10) is connected with the bottom of reactor shell (11), and top offers exhaust outlet, described
Wastewater influent unit be connected with separator (10).
2. a kind of circulating EGSB reaction units according to claim 1, which is characterized in that the reactor shell
(11) include the rectification section (1101) being from bottom to top sequentially connected, conversion zone (1102), extension diameter section (1103) and draining section
(1104), the bottom of the sludge collecting mechanism is located in extension diameter section (1103), and top is connected with separator (10), described
The bottom of separator (10) be connected with rectification section (1101).
3. a kind of circulating EGSB reaction units according to claim 2, which is characterized in that the conversion zone (1102)
And draining section (1104) is in the tubulose being vertically arranged, and the internal diameter of the draining section (1104) is more than conversion zone (1102)
Internal diameter.
4. a kind of circulating EGSB reaction units according to claim 2, which is characterized in that the sludge collecting mechanism
Sludge collecting hood (8) in extension diameter section (1103) and setting are set at the top of sludge collecting hood (8) including bottom and detached
Sludge circulation delivery pipe (12) between device (10).
5. a kind of circulating EGSB reaction units according to claim 4, which is characterized in that the rectification section (1101)
In funnel-form, the sludge collecting hood (8) is in inverted funnel-form.
6. a kind of circulating EGSB reaction units according to claim 1, which is characterized in that the gas separation unit
Further include water seal tank (2), air shooter (13) and exhaust pipe (1), one end of the air shooter (13) and exhaust outlet
It is connected, the other end is plugged in water seal tank (2), and the exhaust pipe (1) is arranged at the top of water seal tank (2), and and water seal
The inside in pond (2) is connected.
7. a kind of circulating EGSB reaction units according to claim 1, which is characterized in that the wastewater influent unit
Including cesspool (3) and sewage water inlet pipe (6), one end of the sewage water inlet pipe (6) is connected with cesspool (3), the other end with
Separator is connected at the top of (10).
8. a kind of sewage water treatment method based on device as described in any one of claim 1 to 7, which is characterized in that this method
For：Treatment sewage in wastewater influent unit enters through separator (10) in reactor shell (11), and in reactor shell
(11) it is from bottom to top flowed in, the anaerobic ammonium oxidation sludge in simultaneous reactions device shell (11) carries out at denitrogenation treatment sewage
Reason；A sewage part after denitrogenation processing is discharged by reactor shell (11), and another part is mingled with anaerobic ammonium oxidation sludge, and
Enter in separator (10) through sludge collecting mechanism, is mixed with the treatment sewage in separator (10)；In separator (10)
Gas is discharged by exhaust outlet.
9. a kind of device-based sewage water treatment method according to claim 8, which is characterized in that the reactor enclosure
In body (11), volatile sludge concentration >=3000mg/L of anaerobic ammonium oxidation sludge.
10. a kind of device-based sewage water treatment method according to claim 8, which is characterized in that the reactor
In shell (11), the upflow velocity of liquid stream is 4-5m/h, and hydraulic detention time 15-20h, reaction temperature is 30-35 DEG C.
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| CN201810069457.6A CN108328726B (en) | 2018-01-24 | 2018-01-24 | Circulating EGSB reaction device and sewage treatment method based on same |
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| CN201810069457.6A CN108328726B (en) | 2018-01-24 | 2018-01-24 | Circulating EGSB reaction device and sewage treatment method based on same |
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Cited By (4)
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| CN109444001A (en) * | 2018-11-12 | 2019-03-08 | 浙江大学 | A kind of granular mud bed device and method for observing ascending current speed influence factor |
| CN113184942A (en) * | 2021-06-30 | 2021-07-30 | 苏州湛清环保科技有限公司 | Three-phase separator |
| CN113697941A (en) * | 2021-09-18 | 2021-11-26 | 镇江同源胜环境科技有限公司 | Device for reducing floating sludge of up-flow anaerobic ammonia oxidation reactor |
| CN114436396A (en) * | 2022-01-05 | 2022-05-06 | 安阳工学院 | Anaerobic ammonia oxidation granular sludge stable operation device and anaerobic ammonia oxidation stable operation method |
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