CN205740496U - Grated plate type moving bed modified model ABR reactor - Google Patents
Grated plate type moving bed modified model ABR reactor Download PDFInfo
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Abstract
This utility model provides a kind of grated plate type moving bed modified model ABR reactor, this ABR reactor is made up of 3～6 compartments, each compartment includes upward flow compartment and lower to stream compartment, upward flow compartment and the lower ratio to the volume of stream compartment are 3～5:1, wherein, in upward flow compartment built with floating stuffing, screen it is stamped above floating stuffing, described screen is nested on support bar, and support bar is also nested with adjusting nut, and adjusting nut is positioned at above screen.ABR reactor of the present utility model substantially reduces the startup time, improves the biological treatment efficiency of device.
Description
Technical field
This utility model belongs to waste water treatment process technical field, is specifically related to a kind of grated plate type moving bed modified model ABR reactor.
Background technology
Anaerobic baffled reactor (ABR-Anaerobic
Baffled Reactor) it is in the reactor a series of deflection plate to be set along water (flow) direction, reactor is separated into the reative cell of several series connection, each reative cell can be seen as a relatively independent up-flow sludge bed system.Waste water enters the reactor upper and lower baffling of tailing edge deflector and advances, and passes sequentially through the Sludge Bed of each reative cell, and the organic substrate in waste water is by each reative cell and is fully contacted with microorganism therein and is removed.ABR be last century early eighties developed by MeCarty and the partner thereof of Stanford university of the U.S..ABR is referred to as third generation anaerobic reactor, its not only biosolids interception capacity strong, and waterpower mixing condition is good.
The startup of anaerobic reactor is often referred to newly-built system with mud (such as Sewage Plant anaerobic sludge, the digested sludge of the digester) inoculation without domestication, makes reactor reach design load and the process of organic matter removal efficiency.Owing to the generation cycle of anaerobe is long, growth rate is low, and therefore the start-up course of anaerobic reactor is long.Start the difference of factor, generally 30 ~ 100d according to anaerobic reactor, this seriously governs its extensive application in industrial wastewater and domestic sewage processing system.Properly functioning anaerobic baffled reactor is dependent on ascending current and ripe anaerobic sludge output bubble, makes sludge suspension in rising compartment.In reactor to be made, sludge quantity reaches certain numerical value, and the properly functioning process waste water of ripe ability, so the startup of ABR just becomes the most crucial.Anaerobic baffled reactor is commonly used for process and is difficult to biodegradable industrial wastewater, and the domestication start-up course time of reactor also can extend than processing sanitary sewage.Additionally bioreactor is during properly functioning, once production development accident, microorganism fungus kind mortality, bioreactor system is caused to collapse, so needing bioreactor to be again started up, anaerobe needs again to cultivate and tame, and needs again to wait a very long start-up course.
Affect the factor that anaerobic reactor starts a lot, including the factors such as physical dimension of the composition of pending waste water and concentration, the quantity of seed sludge and activity, environmental condition (pH value, temperature etc.), the supplementing of trace element, operating condition (COD volumetric loading, hydraulic detention time etc.) and reactor.
In recent years, follow-on ABR reactor the most all can arrange hanging filler, and the position of the bed that floating stuffing is formed is the most uncontrolled.At the ABR reactor start-up initial stage, seed sludge is due to by action of gravity, it is easy to be gathered in the bottom of reactor.Floating stuffing is gathered in the top of upward flow compartment, and seed sludge is then gathered in the bottom of upward flow compartment, thus floating stuffing is little with the contact portion of seed sludge.In general ABR reactor, the position of filler is uncontrolled, thus filler is the most uncontrolled with contacting of seed sludge.
This utility model is intended making improvements in the facility structure to anaerobic baffled reactor and startup operating condition, improves the controllability of filler in ABR reactor, to shortening the startup time of reactor.
Summary of the invention
Solve the technical problem that:The purpose of this utility model is to provide a kind of grated plate type moving bed modified model ABR reactor and startup method thereof for overcoming the deficiencies in the prior art, and this startup method can shorten the startup time of about 10%.
Technical scheme:
A kind of grated plate type moving bed modified model ABR reactor, it is made up of 3～6 compartments, each compartment includes upward flow compartment and lower to stream compartment, upward flow compartment and the lower ratio to the volume of stream compartment are 3～5:1, wherein, in upward flow compartment built with floating stuffing, screen it is stamped above floating stuffing, described screen is nested on support bar, and support bar is also nested with adjusting nut, and adjusting nut is positioned at above screen.
Further, described screen is stainless steel, is rectangle, and the total length of screen and overall width are respectively less than the length and width of upward flow compartment, with the wall of upward flow compartment at a distance of less than 5mm.
Further, the size of mesh opening between the grizzly bar of described screen is less than the minimum dimension of floating stuffing.
Further, the density of described floating stuffing is at 0.90～0.96 g/cm3, filler diameter 10～25mm, material is polypropylene or polyethylene.
Further, the dosage of described floating stuffing accounts for and rises the 35%～50% of compartment dischargeable capacity.
Further, described support bar is screwed thin bar.
Further, being provided with backflow recoil tube bottom upward flow compartment, described backflow recoil tube is circular perforation pipe.
The startup method of above-mentioned grated plate type moving bed modified model ABR reactor, comprises the following steps:
Step 1, takes anaerobic sludge, pumps supernatant after standing, obtains the thickened sludge that concentration is 30～45 g/L, then puts into glucose, stirring in thickened sludge, stands, obtain seed sludge；
Step 2, step 1 gained seed sludge is seeded in above-mentioned grated plate type moving bed modified model ABR reactor, pump into the treatment sewage being heated to 35 DEG C, the concentration making mud is 10～15 g/L, load filler, being fixed on packing layer by screen again, the hydraulic detention time in regulation reactor is 6～24h；At the system start-up initial stage, screen is placed in upward flow compartment bottom, after upward flow compartment bottom suspension anaerobic sludge and biomembranous amount increase, enters mid-term；System start-up mid-term, screen is placed in the middle part of upward flow compartment, after suspension anaerobic sludge in the middle part of upward flow compartment and biomembranous amount increase, enters the later stage；In the system start-up later stage, screen is placed in upward flow compartment top, until having started.
Further, the time in system start-up initial stage, system start-up mid-term and system start-up later stage distributes in terms of sky, and ratio is 3:4:5,3:5:4,5:4:4 or 5:4:3.
Further, during system start-up, with water pump, part is processed water outlet interval and be back to the backflow recoil tube bottom upward flow compartment.
Further, it is to reflux every day 2 times that lower water in stream compartment is back to the frequency bottom upward flow compartment by backflow recoil tube, backflow 5～10min every time.
Further, use biotechnology, screening, tame and construct the dominant microflora of characteristic contamination of can degrading, and the dominant microflora using the physisorphtion of intermittent cycle to will be enlarged by the degraded characteristic contamination after cultivating is fixed on filler, then filler is placed under screen, forms immobilized biomembrane bed, move up and down screen, making suspension anaerobic sludge grow, on filler, biomembrane is tamed simultaneously, can shorten the reactor start-up time further.
Principle of the present utility model:
Reactor ultimate principle: in each upward flow compartment, screen is set, equipped with filler under screen, screen is enclosed within 2 support bars, screen keeps level, and can move up or down screen by nut regulation stationary grid upper-lower position in upward flow compartment, it is formed with the moving bed of packing layer, pending waste water is entered reactor by water inlet, sequentially passes through several compartment, after treatment by effluent weir water outlet.This is on the basis of tradition ABR reactor, and in conjunction with moving bed biological membrane technology, and this is in order to make the position of this moving bed and run controlled, adds screen, support bar and adjusting nut, and filler is placed under screen.
ABR reactor, adds filler in upward flow compartment, purpose seeks to hang biomembrane on filler, forms anaerobism suspended sludge and biomembrane synergy, increases sludge concentration generally, makes reactor can bear higher COD and processes load, improves biological treatment efficiency.
At the system start-up initial stage, screen is placed in upward flow compartment bottom, makes filler be fully contacted with the seed sludge in ABR, it is simple to the biomembrane stable growth on filler.
Gather to a certain extent Deng Biomass, i.e. enter system start-up mid-term, in time screen is moved up, it is placed in the middle part of upward flow compartment, so making the suspended sludge in the middle part of upward flow compartment be fully contacted with hanging with biomembranous filler, also can have a large amount of increments of anaerobic sludge in the middle part of upward flow compartment, on filler, biomembrane is in suspended sludge, it is also easy to obtain growth update, keeps the biofilm biomass on filler.
In the system start-up later stage, screen is placed in upward flow compartment top, so, it is possible to so that packing layer maintains the top of upward flow compartment under screen, keeps the anaerobic sludge of reactor upward flow compartment along the upper and lower more uniform distribution of compartment；On upward flow compartment top, also form generation and the cultivation of anaerobic sludge.
The setting of screen and control, during making whole Primary culture, filler is fully contacted with seed sludge in ABR, thus serves the effect of the start-up course accelerating ABR, realize shortening the effect of startup time, and this effect is built upon on the basis that innovation of the present utility model improves.
Described screen, between rustless steel grizzly bar, size of mesh opening is less than the minimum dimension of filler.The grizzly bar grid of screen plays the effect retaining filler, does not allow filler be lost to next compartment；Screen packing layer occupy to stream compartment top when simultaneously, also has crown_interception to suspension anaerobic sludge, reduces number of dropouts, maintain high suspended sludge concentration.
During system start-up, with water pump, part is processed water outlet interval and be back to the backflow recoil tube bottom upward flow compartment, reflux every day 2 times, every time backflow 5-10 min.The backflow recoil of interval, brings the shear action of current, makes the aging biomembrane under screen be come off；Prevent filler from blocking simultaneously, prevent short stream, form the hydraulics that reactor is good.
The Starting mode of a kind of grated plate type moving bed modified model ABR reactor, formed seed sludge before this, then according to the principle of grated plate type moving bed ABR reactor carries out cultivating, taming.
At the system start-up initial stage, system start-up mid-term, the time in system start-up later stage distributes in terms of sky, ratio is that 3:4:5(processes general sanitary sewage), or 3:5:4(needs strengthening to start mid-term), or 5:4:4, or 5:4:3(processes industrial wastewater, need to strengthen the domestication of early stage).
First use biotechnology, screening, tame and construct the dominant microflora of characteristic contamination of can degrading, and the dominant microflora using the physisorphtion of intermittent cycle to will be enlarged by the degraded characteristic contamination after cultivating is fixed on filler, again filler is placed under screen, form immobilized biomembrane bed, so be equivalent to before ABR reactor formally starts, first carry out the cultivation of desired microorganisms on filler and fixed, so major part solves biofilm development and fixing problem on the filler during ABR reactor formally starts, move up and down screen, suspension anaerobic sludge is made to grow, on filler, biomembrane is tamed, the startup time of reactor can be shortened further.
Beneficial effect:
1, compared with tradition ABR reactor, in this utility model, filler is fully contacted with seed sludge, biomembrane is hung rapidly on filler, and raise the height of screen in time, portion and top also can quickly form biomembrane in the reactor, substantially reduce the startup time of ABR, typically can shorten the startup time of about 10%.
2, in this utility model, utilizing screen to suppress floating stuffing bed, utilize nut and support bar to carry out screen and the position adjustments of floating stuffing bed simultaneously, form filler moving bed layer, equipment is simple, operates easy.
3, in this utility model, screen plays the effect retaining filler, keeps the high Biomass in upward flow compartment, thus improves biological treatment efficiency.
4, in this utility model, backflow recoil tube can promote biomembrane to update and suspended granular sludge grows, it is possible to improves the biological treatment efficiency of device.
Accompanying drawing explanation
Fig. 1 is the grated plate type moving bed modified model ABR structure of reactor schematic diagram in embodiment 1；
Fig. 2 is the grid plate structure schematic diagram in embodiment 1；
Fig. 3 is the startup method schematic diagram of the grated plate type moving bed modified model ABR reactor in embodiment 1, a is the schematic diagram that screen is in upward flow compartment bottom, b is the schematic diagram that screen is in the middle part of upward flow compartment, and c is the schematic diagram that screen is in upward flow compartment top；
Wherein, 1 water inlet, 2 compartments, 3 times to stream compartment, 4 upward flow compartments, 5 screens, 6 backflow recoil tubes, 7 support bars, 8 adjusting nuts, 9 effluent weirs, 10 outlets, 11 reflux pumps, 12 floating stuffings.
Detailed description of the invention
Following example further illustrate content of the present utility model, but should not be construed as restriction of the present utility model.In the case of without departing substantially from this utility model spirit and essence, the amendment that this utility model method, step or condition are made and replacement, belong to scope of the present utility model.If not specializing, the conventional means that technological means used in embodiment is well known to those skilled in the art.
Embodiment 1
Certain sanitary sewage uses grated plate type moving bed modified model ABR reactor of the present utility model to process, influent concentration COD before treatment≤500mg/L, pH 6.5～8.5, SS≤100mg/L, NH3-N≤100mg/L, TP≤1.0mg/L.Biochemical treatment effluent index COD≤150mg/L, pH 6.5～8.5, SS≤50mg/L, NH3-N≤30mg/L, TP≤1.0mg/L.
As shown in Figure 1, grated plate type moving bed modified model ABR reactor, being made up of 5 compartments 2, each compartment 2 is divided into again upward flow compartment 4 and lower to flowing compartment 3, and upward flow compartment 4 and the lower ratio to the volume of stream compartment 3 are 3:1, wherein, upward flow compartment 4, equipped with floating stuffing 12, is stamped screen 5 above floating stuffing 12, and described screen 5 is enclosed within 2 support bars 7, screen 5 keeps level, and can regulate the screen 5 upper-lower position in upward flow compartment 4 by nut 8.Being provided with backflow recoil tube 6 bottom upward flow compartment 4, described backflow recoil tube 6 is circular perforation pipe.Process waste water and entered reactor by water inlet 1, sequentially pass through 5 compartments, after treatment by effluent weir 9, outlet 10 water outlet.
Screen 5 is made up of rustless steel grizzly bar, and in cuboid, the length and width of screen 5 is slightly less than the length and width of upward flow compartment 4, and upward flow compartment 4 is slightly below the floating stuffing 12 of water built with density, uses Kaldnes floating stuffing, and density is 0.90 g/cm3, a diameter of 15mm of filler, material is polypropylene.In terms of the stacking volume of filler, filler dosage accounts for and rises the 35% of compartment cumulative volume.Support bar 7 is screwed thin bar, and adjusting nut 8 is enclosed within support bar 7, and adjusting nut 7 is positioned at the top of screen 5, can regulate the horizontal level of the screen 5 suppressed below by changing the position of adjusting nut 8.
The startup method of grated plate type moving bed modified model ABR reactor:
(1) use the anaerobic sludge of sewage treatment plant, pump supernatant after standing, obtain the thickened sludge that concentration is 35g/L, thickened sludge puts into glucose, stirring, stands, obtain the seed sludge in black；
(2) being seeded in ABR reactor by gained seed sludge, treatment sewage is first heated up to 35 DEG C, then pumps in ABR reactor, and the concentration making mud is 10g/L, loads onto filler in upward flow compartment, and the hydraulic detention time controlled in reactor is 6～12h；At the system start-up initial stage, system start-up mid-term, the time in system start-up later stage distributes in terms of sky, and ratio is 3:4:5.At the system start-up initial stage, screen is placed in upward flow compartment bottom, after upward flow compartment bottom suspension anaerobic sludge and biomembranous amount increase, enters mid-term；System start-up mid-term, screen is placed in the middle part of upward flow compartment, after suspension anaerobic sludge in the middle part of upward flow compartment and biomembranous amount increase, enters the later stage；In the system start-up later stage, screen is placed in upward flow compartment top, until having started.
Wherein, during system start-up, with water pump, part is processed water outlet interval and be back to the backflow recoil tube bottom upward flow compartment, reflux every day 2 times, every time backflow 5～10 min.State modulator aspect: water inlet remains COD≤500mg/L, system start-up initial stage, and the hydraulic detention time controlled in reactor is 12h, system start-up mid-term, the hydraulic detention time controlled in reactor is 9h, the system start-up later stage, and the hydraulic detention time controlled in reactor is 6h.
System start-up total time is 36 days, and initial start stage is 9 days, and system start-up maintains 12 days mid-term, and the system start-up later stage maintains 15 days.
Comparative example 1
Certain sanitary sewage uses common ABR reactor to process, influent concentration COD before treatment≤500mg/L, pH 6.5～8.5, SS≤100mg/L, NH3-N≤100mg/L, TP≤1.0mg/L.Biochemical treatment effluent index COD≤150mg/L, pH 6.5～8.5, SS≤50mg/L, NH3-N≤30mg/L, TP≤1.0mg/L.
ABR reactor, is made up of 5 compartments, and each compartment is divided into again upward flow compartment and lower to flowing compartment, and upward flow compartment and the lower ratio to the volume of stream compartment are 3:1, the compartment size in concrete compartment size equivalent integers 1.The filler, the filling rate of filler that use are the most in the same manner as in Example 1.
Startup method:
Step 1, uses the anaerobic sludge of sewage treatment plant, pumps supernatant, obtain the thickened sludge that concentration is 35g/L after standing, puts into glucose, stirring, stand, obtain the seed sludge in black in thickened sludge；
Step 2, is seeded to gained seed sludge in ABR reactor, and treatment sewage is first heated up to 35 DEG C, then pumps in ABR reactor, and the concentration making mud is 10g/L, and the hydraulic detention time controlled in reactor is 6～12h.Water inlet remains COD≤500mg/L, and the hydraulic detention time controlled in reactor is 12h, gradually reduces hydraulic detention time to 6h.
System start-up total time is about 42 days.
By embodiment 1 and comparative example 1, this it appears that the advantage that grated plate type moving bed modified model ABR reactor of the present utility model is on structure and Starting mode, box-cage type moving bed modified model ABR reactor of the present utility model is compared with general ABR reactor, in ABR compart-ment constructions and size, Inlet and outlet water each index concentration, filler and media-filling rate, in the case of the parameter such as final time of staying is identical, shorten the startup time of 6 days (about 14%).
Embodiment 2
Certain Production in Chemical Plant comprehensive wastewater, processes high concentrated organic wastewater, influent concentration COD before treatment≤3000mg/L, pH 6.5～8.5, SS≤100mg/L, NH3-N≤300mg/L, characteristic contamination concentration chlorobenzene class≤50mg/L.Effluent index COD≤500mg/L after biochemical treatment, pH 6.5～8.5, SS≤50mg/L, NH3-N≤150mg/L, characteristic contamination concentration chlorobenzene class≤10mg/L.
Grated plate type moving bed modified model ABR reactor, it is made up of 5 compartments 2, each compartment 2 is divided into again upward flow compartment 4 and lower to stream compartment 3, upward flow compartment 4 and the lower ratio to the volume of stream compartment 3 are 5:1, and wherein, upward flow compartment 4 is equipped with floating stuffing 12, screen 5 it is stamped above floating stuffing 12, described screen 5 is enclosed within 2 support bars 7, and screen 5 keeps level, and can regulate the screen 5 upper-lower position in upward flow compartment 4 by nut 8.Being provided with backflow recoil tube 6 bottom upward flow compartment 4, described backflow recoil tube 6 is circular perforation pipe.Process waste water and entered reactor by water inlet 1, sequentially pass through 5 compartments, after treatment by effluent weir 9, outlet 10 water outlet.
Screen 5 is made up of rustless steel grizzly bar, and in cuboid, the length and width of screen 5 is slightly less than the length and width of upward flow compartment 4, and upward flow compartment 4 is slightly below the floating stuffing 12 of water built with density, uses Kaldnes floating stuffing, and density is 0.95 g/cm3, a diameter of 10mm of filler, material is polypropylene.In terms of the stacking volume of filler, filler dosage accounts for and rises the 35% of compartment cumulative volume.Support bar 7 is screwed thin bar, and adjusting nut 8 is enclosed within support bar 7, and adjusting nut 7 is positioned at the top of screen 8, can regulate the horizontal level of the screen 5 suppressed below by changing the position of adjusting nut 8.
The startup method of grated plate type moving bed modified model ABR reactor:
(1) use the anaerobic sludge of sewage treatment plant, pump supernatant after standing, obtain the thickened sludge that concentration is 45g/L, thickened sludge puts into glucose, stirring, stands, obtain the seed sludge in black；
(2) being seeded in ABR reactor by gained seed sludge, treatment sewage is first heated up to 35 DEG C, then pumps in ABR reactor, and the concentration making mud is 15g/L, fills filler in upward flow compartment, and the hydraulic detention time controlled in reactor is 12～18h；At the system start-up initial stage, system start-up mid-term, the time in system start-up later stage distributes in terms of sky, and ratio is 5:4:4.At the system start-up initial stage, screen is placed in upward flow compartment bottom, after upward flow compartment bottom suspension anaerobic sludge and biomembranous amount increase, enters mid-term；System start-up mid-term, screen is placed in the middle part of upward flow compartment, after suspension anaerobic sludge in the middle part of upward flow compartment and biomembranous amount increase, enters the later stage；In the system start-up later stage, screen is placed in upward flow compartment top, until having started.
Wherein, during system start-up, with water pump, part is processed water outlet interval and be back to the backflow recoil tube bottom upward flow compartment, reflux every day 2 times, every time backflow 5～10 min.State modulator aspect: system start-up initial stage, the hydraulic detention time controlled in reactor is 18h, influent COD is progressively upgraded to≤2000mg/L, system start-up mid-term, influent COD is progressively upgraded to≤2500mg/L, and the hydraulic detention time controlled in reactor is 15h, the system start-up later stage, influent COD is progressively upgraded to≤3000mg/L, and the hydraulic detention time controlled in reactor is 12h.
System start-up total time is 52 days, and initial start stage is 20 days, and system start-up maintains 16 days mid-term, and the system start-up later stage maintains 16 days.
Comparative example 2
Certain Production in Chemical Plant comprehensive wastewater, uses common ABR reactor for treatment high concentrated organic wastewater, influent concentration COD before treatment≤3000mg/L, pH 6.5～8.5, SS≤100mg/L, NH3-N≤300mg/L, characteristic contamination concentration chlorobenzene class≤50mg/L.Effluent index COD≤500mg/L after biochemical treatment, pH 6.5～8.5, SS≤50mg/L, NH3-N≤150mg/L, characteristic contamination concentration chlorobenzene class≤10mg/L.
ABR reactor, is made up of 5 compartments, and each compartment is divided into again upward flow compartment and lower to flowing compartment, and upward flow compartment and the lower ratio to the volume of stream compartment are 3:1, and concrete compartment size is with the compartment size in embodiment 1.The filler used, the filling rate of filler is the most in the same manner as in Example 2.
Startup method:
Step 1, uses the anaerobic sludge of sewage treatment plant, pumps supernatant, obtain the thickened sludge that concentration is 45g/L after standing, puts into glucose, stirring, stand, obtain the seed sludge in black in thickened sludge；
Step 2, is seeded to gained seed sludge in ABR reactor, and treatment sewage is first heated up to 35 DEG C, then pumps in ABR reactor, and the concentration making mud is 15g/L, and boxes and baskets are filled filler, and the hydraulic detention time controlled in reactor is 12～18h；Influent COD is progressively upgraded to≤3000mg/L, and the hydraulic detention time controlled in reactor is 18h, gradually reduces hydraulic detention time to 12h.
System start-up total time is about 60 days.
By embodiment 2 and comparative example 2, this it appears that the advantage that grated plate type moving bed modified model ABR reactor of the present utility model is on structure and Starting mode, box-cage type moving bed modified model ABR reactor of the present utility model is compared with general ABR reactor, in ABR compart-ment constructions and size, Inlet and outlet water each index concentration, filler and media-filling rate, in the case of the parameter such as final time of staying is identical, shorten the startup time of 8 days (about 13%).
Embodiment 3
Certain Production in Chemical Plant comprehensive wastewater, processes high concentrated organic wastewater, influent concentration COD before treatment≤3000mg/L, pH 6.5～8.5, SS≤100mg/L, NH3-N≤300mg/L, characteristic contamination concentration chlorobenzene class≤50mg/L.Effluent index COD≤500mg/L after biochemical treatment, pH 6.5～8.5, SS≤50mg/L, NH3-N≤150mg/L, characteristic contamination concentration chlorobenzene class≤10mg/L.
Grated plate type moving bed modified model ABR reactor, it is made up of 5 compartments 2, each compartment 2 is divided into again upward flow compartment 4 and lower to stream compartment 3, upward flow compartment 4 and the lower ratio to the volume of stream compartment 3 are 5:1, and wherein, upward flow compartment 4 is equipped with floating stuffing 12, screen 5 it is stamped above floating stuffing 12, described screen 5 is enclosed within 2 support bars 7, and screen 5 keeps level, and can regulate the screen 5 upper-lower position in upward flow compartment 4 by nut 8.Being provided with backflow recoil tube 6 bottom upward flow compartment 4, described backflow recoil tube 6 is circular perforation pipe.Process waste water and entered reactor by water inlet 1, sequentially pass through 5 compartments, after treatment by effluent weir 9, outlet 10 water outlet.
Screen 5 is made up of rustless steel grizzly bar, and in cuboid, the length and width of screen 5 is slightly less than the length and width of upward flow compartment 4, and upward flow compartment 4 is slightly below the floating stuffing 12 of water built with density, uses Kaldnes floating stuffing, and density is 0.95 g/cm3, a diameter of 10mm, material is polypropylene.In terms of the stacking volume of filler, filler dosage accounts for and rises the 35% of compartment cumulative volume.Support bar 7 is screwed thin bar, and adjusting nut 8 is enclosed within support bar 7, and adjusting nut 7 is positioned at the top of screen 8, can regulate the horizontal level of the screen 5 suppressed below by changing the position of adjusting nut 8.
The startup method of grated plate type moving bed modified model ABR reactor:
(1) use the anaerobic sludge of sewage treatment plant, pump supernatant after standing, obtain the thickened sludge that concentration is 45g/L, thickened sludge puts into glucose, stirring, stands, obtain the seed sludge in black；
(2) use biotechnology, screen, tame and construct the dominant microflora of characteristic contamination (chlorobenzene) of can degrading, and the dominant microflora using the physisorphtion of intermittent cycle to will be enlarged by the degraded characteristic contamination after cultivating is fixed on filler.
(3) gained seed sludge is seeded in ABR reactor, treatment sewage is first heated up to 35 DEG C, pump in ABR reactor again, the concentration making mud is 15g/L, the filler processed through immobilization in upward flow compartment loads onto step (2), adding top grating, form immobilized biomembrane bed, the hydraulic detention time controlled in reactor is 12～18h；At the system start-up initial stage, system start-up mid-term, the time in system start-up later stage distributes in terms of sky, and ratio is 5:4:4.At the system start-up initial stage, screen is placed in upward flow compartment bottom, after upward flow compartment bottom suspension anaerobic sludge and biomembranous amount increase, enters mid-term；System start-up mid-term, screen is placed in the middle part of upward flow compartment, after suspension anaerobic sludge in the middle part of upward flow compartment and biomembranous amount increase, enters the later stage；In the system start-up later stage, screen is placed in upward flow compartment top, until having started.
(4) wherein, during system start-up, with water pump, part is processed water outlet interval and be back to the backflow recoil tube bottom upward flow compartment, reflux every day 2 times, every time backflow 5～10 min.
(5) parameter is controlled: the system start-up initial stage, the hydraulic detention time controlled in reactor is 18h, influent COD is progressively upgraded to≤2000mg/L, system start-up mid-term, influent COD is progressively upgraded to≤2500mg/L, and the hydraulic detention time controlled in reactor is 15h, the system start-up later stage, influent COD is progressively upgraded to≤3000mg/L, and the hydraulic detention time controlled in reactor is 12h.
System start-up total time is 50 days, and initial start stage is 19.2 days, and system start-up maintains 15.4 days mid-term, and the system start-up later stage maintains 15.4 days.
By embodiment 3 and comparative example 2, this it appears that the advantage that grated plate type moving bed modified model ABR reactor of the present utility model is on structure and Starting mode, box-cage type moving bed modified model ABR reactor of the present utility model is compared with general ABR reactor, in ABR compart-ment constructions and size, Inlet and outlet water each index concentration, filler and media-filling rate, in the case of the parameter such as final time of staying is identical, shorten the startup time of 10 days (about 16.7%).
Claims (7)
1. grated plate type moving bed modified model ABR reactor, it is made up of 3～6 compartments (2), each compartment (2) includes upward flow compartment (4) and lower to stream compartment (3), upward flow compartment (4) and the lower ratio to the volume of stream compartment (3) are 3～5:1, it is characterized in that: in upward flow compartment (4) built with floating stuffing (12), it is stamped screen (5) in floating stuffing (12) top, described screen (5) is nested on support bar (7), also being nested with adjusting nut (8) on support bar (7), adjusting nut (8) is positioned at screen (5) top.
Grated plate type moving bed modified model ABR reactor the most according to claim 1, it is characterized in that: described screen (5) is made up of rustless steel grizzly bar, entirety is rectangle, interior in netted, the total length of screen (5) and overall width are respectively less than the wall of the length and width of upward flow compartment (4), screen and upward flow compartment at a distance of less than 5mm.
Grated plate type moving bed modified model ABR reactor the most according to claim 1, it is characterised in that: the size of mesh opening between rustless steel grizzly bar is less than the minimum dimension of floating stuffing (12).
Grated plate type moving bed modified model ABR reactor the most according to claim 1, it is characterised in that: the density of described floating stuffing (12) is at 0.90～0.96 g/cm3, filler diameter 10～25mm, material is polypropylene or polyethylene.
Grated plate type moving bed modified model ABR reactor the most according to claim 1, it is characterised in that: the dosage of described floating stuffing (12) accounts for and rises the 35%～50% of compartment (4) dischargeable capacity.
Grated plate type moving bed modified model ABR reactor the most according to claim 1, it is characterised in that: described support bar (7) is screwed thin bar.
Grated plate type moving bed modified model ABR reactor the most according to claim 1, it is characterised in that: upward flow compartment (4) bottom is provided with backflow recoil tube (6), and described backflow recoil tube (6) is circular perforation pipe.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776534A (en) * | 2016-05-10 | 2016-07-20 | 盐城工学院 | Grid-type moving bed improved ABR (Anaerobic Baffled Reactor) and starting method thereof |
| CN106865790A (en) * | 2017-05-02 | 2017-06-20 | 广东工业大学 | A kind of sewage disposal device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776534A (en) * | 2016-05-10 | 2016-07-20 | 盐城工学院 | Grid-type moving bed improved ABR (Anaerobic Baffled Reactor) and starting method thereof |
| CN105776534B (en) * | 2016-05-10 | 2018-11-23 | 盐城工学院 | Grated plate type moving bed modified ABR reactor and its starting method |
| CN106865790A (en) * | 2017-05-02 | 2017-06-20 | 广东工业大学 | A kind of sewage disposal device |
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