CN105668780B - It is acidified fast quick-recovery anaerobic reaction system - Google Patents
It is acidified fast quick-recovery anaerobic reaction system Download PDFInfo
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- CN105668780B CN105668780B CN201410677677.9A CN201410677677A CN105668780B CN 105668780 B CN105668780 B CN 105668780B CN 201410677677 A CN201410677677 A CN 201410677677A CN 105668780 B CN105668780 B CN 105668780B
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 37
- 238000011084 recovery Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000000126 substance Substances 0.000 claims abstract description 28
- 230000020477 pH reduction Effects 0.000 claims abstract description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 13
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000007836 KH2PO4 Substances 0.000 claims description 3
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 24
- 230000015572 biosynthetic process Effects 0.000 abstract description 11
- 238000003786 synthesis reaction Methods 0.000 abstract description 11
- 239000003245 coal Substances 0.000 abstract description 10
- 239000010865 sewage Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The present invention relates to technical field of sewage more particularly to a kind of fast quick-recovery anaerobic reaction system of acidification, including two-stage EGSB reactors and an intermediate pool, the intermediate pool water inlet end and primary effluent system, water outlet is connected to two level water inlet；The chemicals addition control pond water outlet is connected to level-one water inlet；The level-one return-flow system is arranged in the reactor reaction zones level-one EGSB middle and upper part, is back to level-one water inlet；The two level return-flow system setting is in the reactor reaction zones two level EGSB middle and upper part, and flow back two strands of moisture, one water is controlled by second solenoid valve, is back to two level water inlet, one water is back to level-one water inlet by third solenoid valve control.The present invention realizes the anaerobic bio-treated of high organic concentration coal liquifaction F- T synthesis waste water, solves the problems, such as that high-load anaerobic reactor is easily acidified, while also providing technical support to handle similar waste water.
Description
Technical field
The present invention relates to technical field of sewage more particularly to a kind of fast quick-recovery anaerobic reaction systems of acidification.
Background technology
Low energy consumption, load is high because of it for Anaerobic Biotechnology, efficient and can generate biogas due to is widely used in industry
In waste water (especially high concentrated organic wastewater) treatment process.It is efficient that EGSB reactors (expanded granular sludge bed) belong to the third generation
Anaerobic reactor, EGSB reactors have larger ratio of height to diameter, and equipped with water outlet cycle, are effectively improving upflow liquid velocity
While, play the role of dilution water inlet, is suitble to the waste water of the high content of organics of processing.
Coal liquifaction F- T synthesis waste water COD (COD) is at concentrations up to 20000~40000mg/L, and discharge capacity is big,
Processing cost is high, and variation water quality is larger, and the processing of F- T synthesis waste water have become restriction coal liquifaction industry development one is important
Factor.Because F- T synthesis waste water has the characteristics that COD concentration is high, variation water quality is big, traditional EGSB reactor for treatment meetings are used
The problem of increasing suddenly there are load, reactor caused to be acidified.
Therefore, for the above deficiency, the present invention provides a kind of fast quick-recovery anaerobic reaction systems of acidification.
Invention content
(1) technical problems to be solved
The technical problem to be solved by the present invention is to high organic substance content wastewater processing, load is difficult to improve, reactor is easily acidified
The problem of and the big problem of coal liquifaction F- T synthesis wastewater treatment difficulty.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of fast quick-recovery anaerobic reaction system of acidification, features
It is：Including chemicals addition control pond, level-one EGSB reactors, two level EGSB reactors, intermediate pool, gas collector, automatically controlled
System, the first solenoid valve, second solenoid valve and third solenoid valve, the level-one EGSB reactors are equipped with level-one intake pump, level-one
Water inlet, level-one three phase separator, level-one return-flow system and primary effluent system；It is grading that the two level EGSB reactors are equipped with two
Water pump, two level water inlet, two level three phase separator, two level return-flow system and secondary effluent system；The chemicals addition control pond is equipped with
Level-one pH on-line computing models；The chemicals addition control pond water outlet is controlled by level-one intake pump and is connected to level-one water inlet；It is described
Level-one EGSB reactor walls lower part is equipped with two level pH on-line computing models；The water inlet end of the intermediate pool and primary effluent system
Connection, water outlet are controlled by two level intake pump and are connected to two level water inlet；The level-one return-flow system is arranged in level-one EGSB
Reactor reaction zone middle and upper part, the level-one return-flow system pass through the first solenoid valve return water to level-one water inlet；The two level is returned
Streaming system is arranged in the reactor reaction zones two level EGSB middle and upper part, two strands of the reflux moisture of the two level return-flow system, one water
Two level water inlet is back to by second solenoid valve control, another strand of water is back to level-one water inlet by third solenoid valve control；Institute
It states level-one three phase separator and two level three phase separator is separately positioned on level-one EGSB reactors and two level EGSB inside reactors,
And gas collector is connected to level-one three phase separator and two level three phase separator outlet side；The electric-control system respectively with add
Medicine regulating reservoir, level-one pH on-line computing models, two level pH on-line computing models, the first solenoid valve, second solenoid valve, third solenoid valve and
Two level intake pump connects.
Wherein, the level-one EGSB reactors are identical with the volume of two level EGSB reactors, by reaction zone and settling zone
It constitutes.
Wherein, the volume ratio of the reaction zone and settling zone is 13:8, the reaction zone ratio of height to diameter is 16.25.
Wherein, the level-one EGSB reactors and two level EGSB reactors are anaeration in normal temperature reactor, and reaction temperature is
33~37 DEG C.
Wherein, the chemicals addition control pond is equipped with NaOH, NaHCO3、KH2PO4And NH4The dosing unit of tetra- kinds of medicaments of Cl.
Wherein, the electric-control system adjusts chemicals addition control pond according to the data feedback of level-one pH on-line computing models
NaOH dosages.
Wherein, the electric-control system adjusts the first solenoid valve, second according to the data feedback of two level pH on-line computing models
The open and close of solenoid valve and third solenoid valve, control two level water inlet pump discharge and the NaHCO for controlling chemicals addition control pond3Dosing
Amount.
(3) advantageous effect
The above-mentioned technical proposal of the present invention has the following advantages that：The present invention is taken using two-stage EGSB reactor for treatment coal liquifactions
Hold in the palm synthetic wastewater, in EGSB reactors settling zone return of waste water to water inlet, can organic concentration in diluting reactor, improve anti-
Device processing capacity is answered, ensures effluent quality；PH on-line monitoring systems are designed in chemicals addition control pond and level-one EGSB reactors, it can
It finds that reactor is acidified problem in time, and can in time make accordingly, take emergency measures by the control of electric-control system；Two
Grade EGSB reactors can successfully manage reactor acidification problem, using larger volumetric loading, reduce reactor floor space, section
About construction cost；Two-stage EGSB reactors can generate a large amount of biogas, and biogas, which can be used for generating electricity, generates economic benefit.
Description of the drawings
Fig. 1 is a kind of fast quick-recovery anaerobic reaction system schematic of acidification provided by the invention.
1：Chemicals addition control pond；21：Level-one pH on-line computing models；22：Two level pH on-line computing models；31：Level-one intake pump；
32：Two level intake pump；41：Level-one water inlet；42：Two level water inlet；51 level-one EGSB reactors；52：Two level EGSB reactors；
61：Level-one three phase separator；62：Two level three phase separator；71：Level-one return-flow system；72：Two level return-flow system；81：Level-one goes out
Water system；82：Secondary effluent system 91：First solenoid valve；92：Second solenoid valve；93：Third solenoid valve；10 intermediate pools；
11：Gas collector；12 electric-control systems.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
For illustrating the present invention, but it is not limited to the scope of the present invention.
Shown in referring to Fig.1, the fast quick-recovery anaerobic reaction system of acidification of the invention includes chemicals addition control pond 1, level-one EGSB
Reactor 51, two level EGSB reactors 52, intermediate pool 10, gas collector 11, electric-control system 12, the first solenoid valve 91,
Second solenoid valve 92 and third solenoid valve 93, level-one EGSB reactors 51 are equipped with level-one intake pump 31, level-one water inlet 41, level-one
Three phase separator 61, level-one return-flow system 71 and primary effluent system 81；The two level EGSB reactors 52 are intake equipped with two level
Pump 32, two level water inlet 42, two level three phase separator 62, two level return-flow system 72 and secondary effluent system 82；Chemicals addition control pond 1
Equipped with level-one pH on-line computing models 21；1 water outlet of chemicals addition control pond is controlled by level-one intake pump 31 and is connected to level-one water inlet 41；
51 inner wall lower of level-one EGSB reactors is equipped with two level pH on-line computing models 22；The water inlet end of intermediate pool 10 and primary effluent system
81 connection of system, the water outlet of intermediate pool 10 is controlled by two level intake pump 32 to be connected to two level water inlet 42；Level-one return-flow system
71 settings control return water to one in 51 reaction zone middle and upper part of level-one EGSB reactors, level-one return-flow system 71 by the first solenoid valve 91
Grade water inlet 41.Two level return-flow system 72 is arranged in 52 reaction zone middle and upper part of two level EGSB reactors, two level return-flow system 72
Flow back two strands of moisture, one water is back to two level water inlet 42 by the control of second solenoid valve 92, and another strand of water is by third solenoid valve
93 controls are back to level-one water inlet 41.Level-one three phase separator 61 and two level three phase separator 62 are separately positioned on level-one EGSB
Inside reactor 51 and two level EGSB reactors 52, and gas collector 11 and level-one three phase separator 61 and two level three-phase separate
It is connected to from 62 outlet side of device, the gas separated for collecting level-one three phase separator 61 and two level three phase separator 62.Electricity
Control system 12 respectively with chemicals addition control pond 1, level-one intake pump 31, level-one pH on-line computing models 21, two level pH on-line computing models 22,
First solenoid valve 91, second solenoid valve 92, third solenoid valve 93 and two level intake pump 32 connect.Electric-control system 12 be microcontroller,
Programmable controller or industrial personal computer, input terminal respectively with level-one pH on-line computing models 21, two level pH on-line computing models 22,
Output end respectively with chemicals addition control pond 1, the first solenoid valve 91, second solenoid valve 92, third solenoid valve 93 and two level intake pump 32
Connection, electric-control system are connected to defeated according to the control of the signal of the pH value of 21 two level pH on-line computing models 22 of level-one pH on-line computing models
Each device of outlet is turned on or off.
Further, level-one EGSB reactors 51 and two level EGSB 52 volumes of reactor are identical, level-one EGSB reactors 51
It is made of reaction zone and settling zone with two level EGSB reactors 52, and the volume ratio of reaction zone and settling zone is 13:8, reaction
The ratio of height to diameter in area is 16.25.Level-one EGSB reactors 51 and two level EGSB reactors 52 are anaeration in normal temperature reactor, reaction temperature
Ranging from 33~37 DEG C of degree.
Chemicals addition control pond 1 is internally provided with NaOH, NaHCO3、KH2PO4And NH4The dosing unit of tetra- kinds of medicaments of Cl.Automatically controlled system
System 12 adjusts the NaOH dosages in chemicals addition control pond 1 according to the data feedback of level-one pH on-line computing models 21.Electric-control system 12
According to the data feedback of two level pH on-line computing models 22, the first solenoid valve 91, second solenoid valve 92 and third solenoid valve 93 are adjusted
Open and close, the flow of control two level intake pump 32 and the NaHCO in control chemicals addition control pond 13Dosage.Specifically, level-one
PH on-line computing models 21 control the addition of NaOH, control inlet flow-patterm, and it is 5.0~7.0 to make the pH value into water.Two level pH on-line monitorings
Instrument control NaHCO3's adds, by the open and close for controlling the first solenoid valve 91, second solenoid valve 92 and third solenoid valve 93
And the pH value in the flow control level-one EGSB reactors 51 of two level intake pump 32.Under normal circumstances, two level pH is monitored on-line
The data that instrument 22 measures are 7.0~9.0, at this point, the first solenoid valve 91 and second solenoid valve 92 are opened, third solenoid valve 93 closes
It closes.As pH≤6.5, the first solenoid valve 91 and the closing of second solenoid valve 92, third solenoid valve 93 are opened, meanwhile, two level water inlet
Pump the increase of 32 flows.When pH continues (2 hours or more) in 6.0~6.5 range, addition NaHCO3 amounts are 2kg/m3, pH is lasting
(2h or more) in 5.5~6.0 range, addition NaHCO3 amounts are 3kg/m3, pH lasting (2h or more) adds at≤5.5
4kg/m3。
Present embodiment is the acid using the high organic concentration coal liquifaction F- T synthesis waste water of two-stage EGSB reactor for treatment
Change fast quick-recovery anaerobic reaction system, including level-one EGSB reactors 51, two level EGSB reactors 52 and an intermediate pool 10,
Waste water flows through intermediate pool and enters two level EGSB reactors, through two after the processing removal most COD of level-one EGSB reactors 51
Stage reactor processing, can be down to 800mg/L or less by coal liquifaction F- T synthesis waste water COD concentration from 40000mg/L.Normal operation
Under operating mode, two reactors are independently arranged reflux, play the role of dilution water inlet and improve upflow liquid velocity.Level-one EGSB reactions
When device 51 is acidified, change reflux type, by the effluent recycling of two level EGSB reactors 52 to level-one EGSB reactors 51, level-one
The water outlet of EGSB reactors 51 is directly accessed two level EGSB reactors 52, and waste water in two-stage EGSB reactors is made fully to be mixed
It closes, alleviates acidification phenomenon, necessity opens chemicals addition control pond 1 and adds NaHCO to water inlet3, increase influent alkalinity.
In use, adjusting F- T synthesis wastewater pH to 5.0~6.0, COD by chemicals addition control pond 1:N:P is 100~500:
5:After 1, level-one EGSB reactors 51 are entered by level-one intake pump 31 and level-one water inlet 41.Temperature of reactor control for 33~
37 DEG C, waste water hydraulic detention time is 36~44h, and upflow liquid velocity is adjusted to 2.0m/h by level-one return-flow system 71.Production
Raw biogas enters gas collector 11 by level-one three phase separator 61, and water outlet passes through primary effluent system 81, intermediate pool
10, two level intake pump 32 and two level water inlet 42 enter two level EGSB reactors 52.52 operating parameter of two level EGSB reactors is (anti-
Answer temperature hydraulic detention time, upflow liquid velocity) it is identical as level-one EGSB reactors 51.It generates biogas and passes through two level three-phase separate
Enter gas collector 11 from device 62, water outlet enters next stage treatment process by outlet system 82.When inlet COD concentration is prominent
When increasing, reactor volume load increases, and is easy to cause reactor acidification.When two level pH on-line computing models 22 monitor level-one EGSB
PH controls the opening and closing of third solenoid valve 93 by electric-control system 12 in 5.5~6.5 range in reactor 51 so that two level is returned
Streaming system 71 is back to level-one EGSB reactors 51, and waste water is sufficiently mixed in two EGSB reactors, makes level-one EGSB reactors
Wastewater pH and basicity maintain in the reasonable scope in 51.When pH is less than 5.5 in level-one EGSB reactors 51, above-mentioned arrange is being taken
While applying, NaHCO is added to chemicals addition control pond 13And water inlet flow velocity is suitably reduced, while increasing influent alkalinity, reduce
The volumetric loading of reactor, urgent reactor of coping with are acidified problem.
In order to verify effectiveness of the invention, using above-mentioned apparatus system Inner Mongol coal liquifaction factory F- T synthesis waste water,
Inlet COD concentration be 37000~40780mg/L, inlet flow-patterm be 2.73~3.42, in chemicals addition control pond 1 adjust inlet flow-patterm to
6.0, COD:N:P is 200:5:After 1, into two-stage EGSB reactors.Through processing, by the secondary effluent of two level EGSB reactors 52
In the water outlet that system 82 flows out, COD concentration is down to 600~800mg/L, and removal rate is up to 98%~99%.It is run in reactor
When to 167 days, there is acidification phenomenon in level-one EGSB reactors 51, and water outlet pH is down to 5.94, changes two-stage using the above method
It is interior for 24 hours to restore normal after the reflux type of EGSB reactors.When reactor is run 249 days, level-one EGSB reactors 51
There is severe acidification phenomenon, water outlet pH is down to 5.27, changes the reflux type of two-stage EGSB reactors using the above method, and add
NaHCO3After adjusting influent alkalinity, COD removal rates restore from 95% to 98% in 3 days.
In conclusion the fast quick-recovery anaerobic reaction system of acidification provided by the invention, realizes high organic concentration coal system
The anaerobic bio-treated of oily F- T synthesis waste water, solves the problems, such as that high-load anaerobic reactor is easily acidified, while being also processing
Similar waste water provides technical support.
The present invention utilizes two-stage EGSB reactor for treatment coal liquifaction F- T synthesis waste water, waste water in EGSB reactors settling zone
Be back to water inlet, can organic concentration in diluting reactor, improve reactor for treatment ability, ensure effluent quality；Dosing tune
PH on-line monitoring systems are designed in section pond and level-one EGSB reactors, can find that reactor is acidified problem in time, and can lead to
The control of electric-control system is crossed, makes accordingly, takes emergency measures in time；Two-stage EGSB reactors can successfully manage reactor acidification
Problem.Using larger volumetric loading, reduce reactor floor space, saves construction cost；Two-stage EGSB reactors can generate
A large amount of biogas, biogas, which can be used for generating electricity, generates economic benefit.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of fast quick-recovery anaerobic reaction system of acidification, it is characterised in that：Including chemicals addition control pond (1), level-one EGSB reactions
Device (51), two level EGSB reactors (52), intermediate pool (10), gas collector (11), electric-control system (12), the first electromagnetism
Valve (91), second solenoid valve (92) and third solenoid valve (93), the level-one EGSB reactors (51) are equipped with level-one intake pump
(31), level-one water inlet (41), level-one three phase separator (61), level-one return-flow system (71) and primary effluent system (81)；Institute
Two level EGSB reactors (52) are stated equipped with two level intake pump (32), two level water inlet (42), two level three phase separator (62), two level
Return-flow system (72) and secondary effluent system (82)；The chemicals addition control pond (1) be equipped with level-one pH on-line computing models (21) and
NaOH、NaHCO3、KH2PO4And NH4The dosing unit of tetra- kinds of medicaments of Cl；Described chemicals addition control pond (1) water outlet is grading by one
Water pump (31) control is connected to level-one water inlet (41)；It is online that level-one EGSB reactors (51) inner wall lower is equipped with two level pH
Monitor (22)；The water inlet end of the intermediate pool (10) is connected to primary effluent system (81), and water outlet is intake by two level
Pump (32) control is connected to two level water inlet (42)；Level-one return-flow system (71) setting is anti-in level-one EGSB reactors (51)
The middle and upper parts Ying Qu, the level-one return-flow system (71) pass through the first solenoid valve (91) return water to level-one water inlet (41)；Described two
Grade return-flow system (72) is arranged in two level EGSB reactors (52) reaction zone middle and upper part, the reflux of the two level return-flow system (72)
Two strands of moisture, one water are back to two level water inlet (42) by second solenoid valve (92) control, and another strand of water is by third solenoid valve
(93) control is back to level-one water inlet (41)；The level-one three phase separator (61) and two level three phase separator (62) are set respectively
It sets in level-one EGSB reactors (51) and two level EGSB reactors (52) inside, and gas collector (11) and level-one three-phase separate
It is connected to from device (61) and two level three phase separator (62) outlet side；The electric-control system (12) respectively with chemicals addition control pond (1), one
Grade pH on-line computing models (21), two level pH on-line computing models (22), the first solenoid valve (91), second solenoid valve (92), third electricity
Magnet valve (93) and two level intake pump (32) connection；The electric-control system (12) is according to the data of two level pH on-line computing models (22)
Feedback adjusts the open and close of the first solenoid valve (91), second solenoid valve (92) and third solenoid valve (93), control two level water inlet
It pumps (32) flow and controls the NaHCO of chemicals addition control pond (1)3Dosage and number according to level-one pH on-line computing models (21)
According to feedback, the NaOH dosages of chemicals addition control pond (1) are adjusted.
2. the fast quick-recovery anaerobic reaction system of acidification according to claim 1, it is characterised in that：The level-one EGSB reactions
Device (51) is identical with the volume of two level EGSB reactors (52), is made of reaction zone and settling zone.
3. the fast quick-recovery anaerobic reaction system of acidification according to claim 2, it is characterised in that：The reaction zone and precipitation
The volume ratio in area is 13:8, the reaction zone ratio of height to diameter is 16.25.
4. the fast quick-recovery anaerobic reaction system of acidification according to claim 1, it is characterised in that：The level-one EGSB reactions
Device (51) and two level EGSB reactors (52) are anaeration in normal temperature reactor, and reaction temperature is 33~37 DEG C.
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|---|---|
| CN105668780A (en) | 2016-06-15 |
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