CN107879578A - Granule sludge original position flotation calcium-removing reactor and its method - Google Patents

Granule sludge original position flotation calcium-removing reactor and its method Download PDF

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Publication number
CN107879578A
CN107879578A CN201711449545.0A CN201711449545A CN107879578A CN 107879578 A CN107879578 A CN 107879578A CN 201711449545 A CN201711449545 A CN 201711449545A CN 107879578 A CN107879578 A CN 107879578A
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area
biogas
decalcification
pipe
iii
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CN107879578B (en
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郑平
余涛
张萌
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Zhejiang University ZJU
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Zhejiang University ZJU
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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
    • C02F11/00—Treatment of sludge; Devices therefor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a kind of granule sludge original position flotation calcium-removing reactor and its method, belong to sewage or sludge treatment field.Reactor includes reactor body, decalcification liquid stream adding system, biogas stirring system.Reactor body sets distributed area, decalcification area, three-phase separation area；Distributed area sets water distributor, water inlet pipe, lower circulating water pipe, gas distribution pipe, appendix；Decalcification area sets vertical clapboard, a left side is granular mud bed, the right side is granular mud bed；Three-phase separation area sets three phase separator, mud chamber, collection chamber, downflow weir, upper circulation water pipe.Decalcification liquid stream adding system sets decalcification liquid storage tank, decalcifying Fluid delivery pump, decalcifying Fluid delivery pipe and decalcifying Fluid distributor pipe.Biogas stirring system sets biogas storage tank, Marsh gas booster pump, biogas booster jar, biogas delivery pipe and biogas distributor pipe.The present invention can realize organic matter conversion and the deliming of granule sludge original position at times.

Description

Granule sludge original position flotation calcium-removing reactor and its method
Technical field
The invention belongs to sewage or sludge treatment field, and in particular to a kind of granule sludge original position flotation calcium-removing reactor and Its method.
Background technology
By the research and development in century more than one, anaerobic biological reactor is had developed to expanded granular sludge bed reactor reactor With the third generation reactor that inner circulation reactor is representative.Anaerobic biological reactor is wide with the efficient of its uniqueness, economic advantages It is general to be applied to industrial or agricultural treatment of Organic Wastewater.But when handling the industrial organic waste waters such as petrochemical industry, papermaking, printing and dyeing, encounter high calcium Challenge.Ca in waste water2+With microbial metabolism caused by CO2Combine to form CaCO3Granule sludge surface and inside are deposited on, Granule sludge mass transfer is influenceed, reduces the efficiency of reactor, while increase the processing load of excess sludge.
In engineering, solve the problems, such as calcification by the way of granule sludge is changed at present, although the method is effective, expense It is larger, and reactor need to be again started up, influence daily wastewater treatment.Granule sludge removal reactor is made into dystopy processing, then grasped It is complex to make process, can also cause granule sludge to damage.Therefore, exploitation granule sludge original position deliming technology has important show Sincere justice.
Because organic acid (such as acetic acid) and inorganic acid (such as sulfuric acid) can dissolve calcium carbonate, therefore they can be used for calcification particle Sludge deliming.
CaCO3+2HAc→Ca(Ac)2+H2O+CO2↑
CaCO3+H2SO4→CaSO4+H2O+CO2↑
Density becomes big after granule sludge calcification, and according to Stokes formula, its sinking speed is more than plain particles sludge, two kinds There is difference in the critical flow defluidization speed of sludge, control the rate of climb of current between two kinds of flow velocitys, and calcification sludge can be achieved The sorting of particle and decalcification granule sludge.
Wherein vsIt is the rate of settling of individual particle sludge, dpIt is the diameter of granule sludge, ρpIt is the density of granule sludge, ρ It is the density of solution, μ is the viscosity of solution.
The present invention integrates organic matter transformation and calcification sludge deliming, can realize the deliming in situ of sludge, reduce Human and material resources, financial resources consumption and sludge damage caused by dystopy operation.The organic matter transformation of reactor itself is made full use of to produce Thing, operating process is easy, and material consumption is relatively low.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of granule sludge original position calcium-removing reactor, especially It is a kind of granule sludge original position flotation calcium-removing reactor.
Concrete technical scheme of the present invention is as follows：
Granule sludge original position flotation calcium-removing reactor, it includes reactor body, decalcification liquid stream adding system, biogas stirring system System；
Described reactor body sets gradually distributed area, decalcification area, three-phase separation area from the bottom to top；Described decalcification area In be provided with vertical clapboard, vertical clapboard divides into decalcification that a symmetrical left side is granular mud bed and the right side is granular mud bed；Vertically Dividing plate bottom extends to distributed area；Water distributor and the gas distribution pipe above water distributor are equipped with described distributed area, and Water distributor and gas distribution pipe all have the module of two groups of independence, and face is distributed in mirror image centered on vertical clapboard, and vertical clapboard is every Side is respectively provided with one group of water distribution tube module and one group of gas distribution tube module, granular mud bed just positioned at the left granular mud bed and right side respectively Lower section.Every group of water distribution tube module is respectively connected with water inlet pipe, and every group of gas distribution tube module is respectively connected with appendix；Followed under water inlet pipe connection Ring water pipe；The bottom of described three-phase separation area is connected by the bottom expanding section in bell mouth shape with decalcification area top, three-phase Three phase separator is provided with Disengagement zone, three phase separator is located between upper edge and the collection chamber lower edge of bottom expanding section；Three-phase Separator includes funnel, upspout and drop flow tube, and along being connected with upspout lower edge on funnel, drop flow tube is with upspout in same Heart cylinder；Collection chamber is located at the top of three-phase separation area；Three phase separator outer wall clamps to form the heavy of annular with three-phase separation area inwall Shallow lake room, downflow weir is on precipitation locular wall；Upper circulation water pipe one end is stretched into three-phase separation area and connected with drop flow tube inner chamber, the other end Connected with lower circulating water pipe；
Decalcification liquid storage tank, decalcifying Fluid delivery pump, decalcifying Fluid delivery pipe, decalcifying Fluid are provided with described decalcification liquid stream adding system Basin is connected to water inlet pipe by decalcifying Fluid delivery pipe, and decalcifying Fluid delivery pipe is provided with decalcifying Fluid delivery pump；
Biogas storage tank is provided with described biogas stirring system, biogas storage tank passes through pipeline and phase at the top of described collection chamber Even, biogas storage tank is also sequentially connected biogas booster jar and appendix by biogas delivery pipe, and biogas delivery pipe is provided with biogas Booster pump.
Based on such scheme, the present invention can also provide following a variety of preferred embodiments.
Described reactor body is in the cylindrical shape of three-stage, and distributed area is identical with the diameter in decalcification area, this 2nd area and three The diameter ratio of phase separation region maximum cross-section is 1：1.5；Distributed area, decalcification area, the ratio between the height of three-phase separation area are 1:10~ 12：2.5~3.
For described water distribution tube module in first quarter moon annular, it is parallel that the straightways of two groups of water distribution tube modules is close to vertical clapboard Set, water inlet pipe is each passed through distributed area side wall two groups of water distribution tube modules of connection after being divided into two-way, and every branch road is provided with control Valve processed；For described gas distribution tube module also in first quarter moon annular, the straightways of two groups of gas distribution tube modules is close to that vertical clapboard is parallel to be set Put, appendix is each passed through distributed area side wall two groups of gas distribution tube modules of connection after being divided into two-way, and also is provided with controlling on every branch road Valve processed.
On described vertical clapboard along with three-phase separation area lower edge it is contour, vertical clapboard lower edge stretch into distributed area 10~ 30mm, vertical clapboard lower edge and the vertical range of distributed area bottom surface are 40~60mm.
Along contour on the lower edge of falling funnel of described three phase separator and expanding section, the area for the lower edge of falling funnel with it is same Highly the area ratio of the three-phase separation area at place is 1：2.25；Edge is less than 30~50mm of liquid level on upspout；Drop in flow tube along height Go out 20~30mm of liquid level, drop flow tube lower edge is higher by down on funnel along 20~30mm.
Plane where described water distributor and the vertical range of distributed area bottom surface are 30~50mm, flat where the gas distribution pipe The vertical range in face and distributed area bottom surface is 50~80mm.
The ratio between described decalcification liquid storage tank and the volume of reactor body are 1：2~3.
The ratio between described reactor body and the volume of biogas booster jar are 1：0.3~0.5.
Another object of the present invention is to provide a kind of granule sludge original position flotation calcium removal methods using above-mentioned reactor, The deliming process of this method divides four-stage successively：
1) the Aerated stirring stage：Biogas is extracted into booster jar and is pressurized by booster pump from biogas storage tank, and supercharging biogas is through biogas Enter after delivery pipe, appendix in two groups of gas distribution tube modules, be uniformly distributed in distributed area, bubble uphill process agitation Sludge Bed, Alleviate calcification sludge caking situation.
2) the decalcification stage is soaked：The decalcifying Fluid in decalcification liquid storage tank is delivered to water inlet pipe and two groups by decalcifying Fluid delivery pump Water distribution tube module, gradually replace it is granular mud bed in mixed liquor, stop after the completion of displacement plus decalcifying Fluid, be soaked in granule sludge In decalcifying Fluid, with dissolved particles Sludge Surface and internal calcium carbonate.
3) flotation stage is circulated：Supercharging biogas is entered in one group of gas distribution tube module after biogas delivery pipe, appendix, closed Close another group of gas distribution tube module；Then make the drop stream liquid in pipe in three-phase separation area with certain reflux ratio injection with being in open The gas distribution tube module of state is located in the water distribution tube module of vertical clapboard the same side, makes mixed liquor in distributed area, decalcification area and three Interior circulation is formed around vertical clapboard between phase separation region, decalcification granule sludge buoyance lift and Sludge Bed is enriched under flow action Top；Then the opening of two groups of gas distribution tube modules and water distribution tube module is changed, changes water distribution side and gas distribution side, makes mixed liquor Opposite direction circulates；After repeating the transfer process several times, the decalcification and flotation of calcification granule sludge are completed.
4) wash phase：Clear water is pumped into distributed area, flushing is granular mud bed, removes the decalcifying Fluid of residual.
In the above method, clear water or pending waste water are pumped into process and can hold a concurrent post realization by decalcification liquid stream adding system.
The present invention in terms of existing technologies, has the advantages that：
1) using the structure specialization and the operation specialization of Aerated stirring for separating reaction zone, realize in decalcifying Fluid and circulate, profit Calcification sludge is sorted with the difference of granule sludge density before and after deliming, reduces damage of the decalcifying Fluid to granule sludge.2) can produce Sulfuric acid caused by the acetic acid or sulfide-oxidizing enzyme that acetic acid bacteria anaerobic fermentation is formed is cheap as decalcifying Fluid, cost.3) needed for deliming Gas is converted by organic matter and produced, and without extra supply, can avoid murder by poisoning of the oxygen to anaerobic grain sludge.
Brief description of the drawings
Fig. 1 is the positive structure schematic of granule sludge original position flotation calcium-removing reactor；
Fig. 2 is the dimensional structure diagram of granule sludge original position flotation calcium-removing reactor；
Fig. 3 is the front (a) of reactor body, side (b) structural representation；
Fig. 4 is the sectional side elevation (a) and top view (b) in distributed area.
Reference in figure：Reactor body I, decalcification liquid stream adding system II, biogas stirring system III, distributed area I-1, Decalcification area I-2, three-phase separation area I-3, water distributor I-1-1-1, water inlet pipe I-1-1-2, gas distribution pipe I-1-2-1, appendix I-1- 2-2, vertical clapboard I-2-1, left granular mud bed I-2-2, right granular mud bed I-2-3, three phase separator I-3-1, mud chamber I-3-2, collection chamber I-3-3, downflow weir I-3-4, upper circulation water pipe I-3-5, bottom expanding section I-3-6, the I-3-1-1 of falling funnel, Upspout I-3-1-2, drop flow tube I-3-1-3, decalcification liquid storage tank II-1, decalcifying Fluid delivery pump II-2, decalcifying Fluid delivery pipe II-3, Biogas storage tank III-1, Marsh gas booster pump III-2, biogas booster jar III-3, biogas delivery pipe III-4.
Embodiment
The present invention is further elaborated and illustrated with reference to the accompanying drawings and detailed description.Each implementation in the present invention The technical characteristic of mode can carry out respective combination on the premise of not colliding with each other.
As shown in figure 1, a kind of granule sludge original position flotation calcium-removing reactor in the present embodiment, mainly includes reactor master Body I, decalcification liquid stream adding system II, biogas stirring system III three parts.Reactor body I is used for as Anaerobic wastewater treatment Nucleus, biogas caused by its anaerobic reaction are stored in biogas stirring system III tank body, biogas stirring system III In the flotation deliming stage biogas can be pumped into reactor body I again, without extra supply, and due to containing in biogas Oxygen amount is low, can avoid murder by poisoning of the oxygen to anaerobic grain sludge.In the present embodiment, decalcification liquid stream adding system II is played simultaneously Multiple action according to technique, it is necessary to need to be pumped into clear water, pending waste water or decalcifying Fluid into reactor.
The structure of granule sludge original position flotation calcium-removing reactor is described in detail below.
As shown in figures 1-4, reactor body I is in the cylindrical shape of three-stage, and reactor body I is set gradually from the bottom to top Distributed area I-1, decalcification area I-2, three-phase separation area I-3.Vertical clapboard I-2-1, vertical clapboard I-2-1 are provided with decalcification area I-2 It is symmetrical and isometric left granular mud bed I-2-2 and right granular mud bed I-2-3 by decalcification area I-2 points.Left particle Sludge Bed I-2-2 connects with right granular mud bed I-2-3 only top and bottom, the closed isolation in remaining centre position.Vertical clapboard I-2-1 stretches into bottom distributed area I-1.In order to realize water distribution and air distribution function, water distributor I-1-1-1 is equipped with the I-1 of distributed area And the gas distribution pipe I-1-2-1 above water distributor I-1-1-1.As shown in figure 4, water distributor I-1-1-1 and gas distribution pipe I-1- 2-1 has the module of two groups of independence, and face is distributed in mirror image centered on vertical clapboard I-2-1, and vertical clapboard I-2-1 is per side Have and only one group of water distributor I-1-1-1 module and one group of gas distribution pipe I-1-2-1 module.Every group of water distributor I-1-1-1 module Water inlet pipe I-1-1-2 is respectively connected with, every group of gas distribution pipe I-1-2-1 module is respectively connected with appendix I-1-2-2.Due to each group model Need independent control, therefore water inlet pipe I-1-1-2 in every group of module or appendix I-1-2-2 are required to independent control, can adopt With different pipelines, can also need to set control piper respectively by the way of same pipeline separates two branch roads, but on branch road The control valve of break-make.In the present embodiment, in order that water distribution is uniform, water distributor I-1-1-1 modules are in first quarter moon annular, two groups of water distributions The straightway of pipe I-1-1-1 modules is close to vertical clapboard I-2-1 and be arranged in parallel, and water inlet pipe I-1-1-2 divides to distinguish after two-way Two groups of water distributor I-1-1-1 modules are connected through distributed area I-1 side walls, and every branch road is controlled provided with magnetic valve；Together Reason, gas distribution pipe I-1-2-1 modules are also close to vertical clapboard in first quarter moon annular, the straightway of two groups of gas distribution pipe I-1-2-1 modules I-2-1 be arranged in parallel, and appendix I-1-2-2 is divided to connects two groups of gas distribution pipe I-1- to be each passed through distributed area I-1 side walls after two-way 2-1 modules, and it also is provided with control valve on every branch road.The equal court of opening direction on gas distribution pipe I-1-2-1 and water distributor I-1-1-1 Under.
Three-phase separation area I-3 bottom passes through phase at the top of the bottom expanding section I-3-6 and decalcification area I-2 in bell mouth shape Even, it is provided with three phase separator I-3-1 in the I-3 of three-phase separation area.Three phase separator I-3-1 is arranged at bottom expanding section I-3-6 Upper edge and collection chamber I-3-3 lower edges between.Three phase separator I-3-1 include the I-3-1-1 of falling funnel, upspout I-3-1-2 and Flow tube I-3-1-3 drops, the I-3-1-1 of falling funnel it is upper along with upspout I-3-1-2 lower edges are closed is connected, drop flow tube I-3-1-3 and liter Flow tube I-3-1-2 in concentric tube and clamp between the two annular space bottom connection mud chamber I-3-2.Collection chamber I-3-3 positions At the top of the I-3 of three-phase separation area, and connect three phase separator I-3-1 top vent.Three phase separator I-3-1 outer walls and three Phase separation region I-3 inwalls clamp the mud chamber I-3-2 to form annular.Downflow weir I-3-4 is located on mud chamber's I-3-2 walls, reaction Waste water after device processing can be discharged by downflow weir I-3-4.Upper circulation water pipe I-3-5 stretches into one end three-phase separation area I-3 and drop Flow tube I-3-1-3 inner chambers connect, and the other end connects with lower circulating water pipe I-1-1-3 one end, and lower circulating water pipe I-1-1-3's is another End connection water inlet pipe I-1-1-2.
Mixed liquor in drop flow tube I-3-1-3 can pass sequentially through upper circulation water pipe I-3-5, lower circulating water pipe I-1-1-3, Water inlet pipe I-1-1-2 enters distributed area I-1.Certainly, flowed back to be better achieved, upper circulation water pipe I-3-5 or lower recirculated waters One circulating pump can be further set on pipe I-1-1-3.
Decalcification liquid storage tank II-1, decalcifying Fluid delivery pump II-2, decalcifying Fluid delivery pipe II- are provided with decalcification liquid stream adding system II 3, decalcification liquid storage tank II-1 are connected to water inlet pipe I-1-1-2 by decalcifying Fluid delivery pipe II-3, and on decalcifying Fluid delivery pipe II-3 Provided with decalcifying Fluid delivery pump II-2.It can be added decalcifying Fluid, clear water according to technique needs or wait to locate in decalcification liquid storage tank II-1 Manage waste water.
Pass through pipeline and described gas collection provided with biogas storage tank III-1, biogas storage tank III-1 in biogas stirring system III It is connected at the top of the I-3-3 of room, biogas storage tank III-1 is also sequentially connected biogas booster jar III-3 and defeated by biogas delivery pipe III-4 Tracheae I-1-2-2, and biogas delivery pipe III-4 is provided with Marsh gas booster pump III-2.
In the present invention, because vertical clapboard I-2-1 both sides are respectively arranged with the water distributor I-1-1-1 modules of independent control With gas distribution pipe I-1-2-1 modules, therefore the recurrent state for the working state control internal mix liquid for adjusting each module can be passed through.It is false Water distributor I-1-1-1 modules and gas distribution pipe I-1-2-1 modules such as left side work, the water distributor I-1-1-1 modules and cloth on right side Tracheae I-1-2-1 modules are closed, then under the driving of circulating pump and the supercharging biogas being pumped into from gas distribution pipe I-1-2-1, mixing Liquid can rise along left granular mud bed I-2-2, after the expanding section by three-phase separation area I-3 bottoms, along right granular mud bed I- 2-3 declines, then returns to left granular mud bed I-2-2 by distributed area I-1, realizes that mixed liquor circulates.And the gas being pumped into carries Mud granule at the expanding section I-3-6 of bottom because increasing radius, flows decrease cause mud granule to sink, therefore gas carry Mixed liquor enters the I-3-1-1 of falling funnel and upspout I-3-1-2, final gas are collected to natural pond again by collection chamber I-3-3 Gas storage tank III-1, and mixed liquor enters drop flow tube I-3-1-3, and it is back to distributed area I-1.
In the present embodiment, the design parameter of each part may be selected as follows in reactor：
Plane where water distributor I-1-1-1 and the vertical range of distributed area bottom surface are 30~50mm, gas distribution pipe I-1-2-1 institutes Vertical range in plane Yu distributed area bottom surface is 50~80mm.In reactor body I, distributed area I-1 and decalcification area I-2's is straight Footpath is identical, and the diameter ratio of this 2nd area and three-phase separation area I-3 maximum cross-sections is 1：1.5；Distributed area I-1, decalcification area I-2, three The ratio between phase separation region I-3 height is 1:10~12：2.5~3.The ratio between decalcification liquid storage tank II-1 and reactor body I volume For 1：2~3.The ratio between reactor body I and biogas booster jar III-3 volume is 1：0.3~0.5.Edge on vertical clapboard I-2-1 Contour with three-phase separation area lower edge, vertical clapboard I-2-1 lower edges stretch into 10~30mm of distributed area, vertical clapboard I-2-1 lower edges with The vertical range of distributed area I-1 bottom surfaces is 40~60mm.The three phase separator I-3-1 I-3-1-1 of falling funnel lower edges and expanding section Along contour, the area ratio of the area and the three-phase separation area I-3 at sustained height of the I-3-1-1 of falling funnel lower edges on I-3-6 For 1：2.25；Edge is less than 30~50mm of liquid level on upspout I-3-1-2；Edge is higher by 20~30mm of liquid level on drop flow tube I-3-1-3, Drop flow tube I-3-1-3 lower edges are higher by the I-3-1-1 of falling funnel along 20~30mm.During actual use, it can need to adjust according to technique Whole each parameter and ratio.In addition, controlling for convenience, corresponding control valve can be set on each tracheae or water pipe.
Based on above-mentioned reactor, the present embodiment additionally provides a kind of granule sludge original position flotation calcium removal methods.In reactor After main body I operation anaerobic treatment process certain times, caused natural pond in a large amount of anaerobic processes of biogas storage tank III-1 memory storages Gas, and the Ca in waste water2+With microbial metabolism caused by CO2Combine to form CaCO3It is deposited on granule sludge surface and inside, shadow Granule sludge mass transfer is rung, reduces the efficiency of reactor.Therefore, it is necessary to suspend anaerobic technique, granule sludge original position flotation is carried out Deliming.Deliming process divides four-stage successively：
1) the Aerated stirring stage：Biogas is extracted into booster jar III-3 and is pressurized by booster pump III-2 from biogas storage tank III-1, It is pressurized biogas after biogas delivery pipe III-4, appendix I-1-2-2 to enter in two groups of gas distribution pipe I-1-2-1 modules, in distributed area I-1 is uniformly distributed, and bubble uphill process agitation Sludge Bed, alleviates calcification sludge caking situation.
2) the decalcification stage is soaked：The decalcifying Fluid in decalcification liquid storage tank II-1 is delivered into water by decalcifying Fluid delivery pump II-2 Pipe I-1-1-2 and two groups of water distributor I-1-1-1 modules, gradually replace it is granular mud bed in mixed liquor.Decalcifying Fluid can basis Need to be selected, sulfuric acid etc. caused by the acetic acid or sulfide-oxidizing enzyme of acetogen anaerobic fermentation formation can be used.Displacement is completed After stop plus decalcifying Fluid, granule sludge is soaked in decalcifying Fluid, with dissolved particles Sludge Surface and internal calcium carbonate.
3) flotation stage is circulated：Supercharging biogas is entered into one group of cloth after biogas delivery pipe III-4, appendix I-1-2-2 In tracheae I-1-2-1 modules, another group of gas distribution pipe I-1-2-1 module is closed；Then the drop flow tube I- in the I-3 of three-phase separation area is made Liquid is located at vertical clapboard I-2-1 with certain reflux ratio injection and in the gas distribution pipe I-1-2-1 modules of opening in 3-1-3 In the water distributor I-1-1-1 modules of the same side.Thus, in vertical clapboard I-2-1 side, that is, inflation be present, backflow again be present, Therefore mixed liquor is formed under the promotion of biogas between distributed area, decalcification area and three-phase separation area around vertical clapboard I-2-1 Interior circulation, because decalcification granule sludge density is smaller, decalcification granule sludge buoyance lift and it is enriched under flow action in Sludge Bed Portion.After circulating certain time, change the opening of two groups of gas distribution pipe I-1-2-1 modules and water distributor I-1-1-1 modules, i.e., it is former The water distributor I-1-1-1 modules and gas distribution pipe I-1-2-1 modules of this unlatching are closed, another group of water distributor I-1-1-1 module and cloth Tracheae I-1-2-1 modules are opened, and change water distribution side and gas distribution side, circulate mixed liquor opposite direction.It is some to repeat the transfer process After secondary, the decalcification and flotation of calcification granule sludge are completed.
4) wash phase：Clear water is pumped into distributed area I-1, flushing is granular mud bed, removes the decalcifying Fluid of residual.
Finally, pending waste water is pumped into again, starts the anaerobic technique of reactor.
In above-mentioned technique, clear water or pending waste water are pumped into process and can hold a concurrent post reality by decalcification liquid stream adding system (II) It is existing.The residence time of each operation stage and technological parameter can be determined according to debugging result.
The present invention can realize organic matter conversion and the deliming of granule sludge original position at times；During deliming, stop water inlet, there is provided increase Biogas and decalcifying Fluid are pressed, granule sludge deliming is realized in the interior circulation of decalcifying Fluid；After deliming, stop adding decalcifying Fluid and be pressurized natural pond Gas, recover water inlet, biogas is produced using organic matter；Biogas production and sludge deliming are melted into a whole, and apparatus structure is simple, operation side Just.
Embodiment described above is a kind of preferable scheme of the present invention, and so it is not intended to limiting the invention.Have The those of ordinary skill of technical field is closed, without departing from the spirit and scope of the present invention, various changes can also be made Change and modification.Therefore the technical scheme that all modes for taking equivalent substitution or equivalent transformation are obtained, the guarantor of the present invention is all fallen within In the range of shield.

Claims (10)

1. a kind of granule sludge original position flotation calcium-removing reactor, it is characterised in that add including reactor body (I), decalcification liquid stream System (II), biogas stirring system (III)；
Described reactor body (I) sets gradually distributed area (I-1), decalcification area (I-2), three-phase separation area (I- from the bottom to top 3)；Vertical clapboard (I-2-1) is provided with described decalcification area (I-2), decalcification area (I-2) is divided into a left side by vertical clapboard (I-2-1) Right symmetrical left granular mud bed (I-2-2) and the right side are granular mud bed (I-2-3)；Vertical clapboard (I-2-1) bottom extends to point Cloth area (I-1)；Water distributor (I-1-1-1) is equipped with described distributed area (I-1) and above water distributor (I-1-1-1) Gas distribution pipe (I-1-2-1), and water distributor (I-1-1-1) and gas distribution pipe (I-1-2-1) all have a module of two groups of independence, and with Face is distributed in mirror image centered on vertical clapboard (I-2-1), and vertical clapboard (I-2-1) is respectively provided with one group of water distributor (I-1-1- per side 1) module and one group of gas distribution pipe (I-1-2-1) module；Every group of water distributor (I-1-1-1) module is respectively connected with water inlet pipe (I-1-1- 2), every group of gas distribution pipe (I-1-2-1) module is respectively connected with appendix (I-1-2-2)；The lower recirculated water of water inlet pipe (I-1-1-2) connection Manage (I-1-1-3)；The bottom of described three-phase separation area (I-3) is by the bottom expanding section (I-3-6) in bell mouth shape with taking off It is connected at the top of calcium area (I-2), three phase separator (I-3-1), three phase separator (I-3-1) is provided with three-phase separation area (I-3) Between the upper edge of bottom expanding section (I-3-6) and collection chamber (I-3-3) lower edge；Three phase separator (I-3-1) includes falling to leak Struggle against (I-3-1-1), upspout (I-3-1-2) and drop flow tube (I-3-1-3), on funnel (I-3-1-1) edge and upspout (I-3- 1-2) lower edge is connected, and drop flow tube (I-3-1-3) and upspout (I-3-1-2) are in concentric tube；Collection chamber (I-3-3) is located at three-phase separate From at the top of area (I-3)；Three phase separator (I-3-1) outer wall clamps the mud chamber to form annular with three-phase separation area (I-3) inwall (I-3-2), downflow weir (I-3-4) is located on mud chamber (I-3-2) wall；Three phase separation is stretched into upper circulation water pipe (I-3-5) one end Area (I-3) connects with drop flow tube (I-3-1-3) inner chamber, and the other end connects with lower circulating water pipe (I-1-1-3)；
Decalcification liquid storage tank (II-1), decalcifying Fluid delivery pump (II-2), decalcifying Fluid are provided with described decalcification liquid stream adding system (II) Delivery pipe (II-3), decalcification liquid storage tank (II-1) are connected to water inlet pipe (I-1-1-2) by decalcifying Fluid delivery pipe (II-3), and de- Calcium liquid delivery pipe (II-3) is provided with decalcifying Fluid delivery pump (II-2)；
Biogas storage tank (III-1) is provided with described biogas stirring system (III), biogas storage tank (III-1) passes through pipeline and institute It is connected at the top of the collection chamber (I-3-3) stated, biogas storage tank (III-1) is also sequentially connected biogas by biogas delivery pipe (III-4) Booster jar (III-3) and appendix (I-1-2-2), and biogas delivery pipe (III-4) is provided with Marsh gas booster pump (III-2).
2. flotation calcium-removing reactor in granule sludge original position as claimed in claim 1, it is characterised in that described reactor body (I) in the cylindrical shape of three-stage, distributed area (I-1) is identical with the diameter of decalcification area (I-2), this 2nd area and three-phase separation area (I- 3) diameter ratio of maximum cross-section is 1：1.5；Distributed area (I-1), decalcification area (I-2), the ratio between the height of three-phase separation area (I-3) For 1:10~12：2.5~3.
3. flotation calcium-removing reactor in granule sludge original position as claimed in claim 1, it is characterised in that described water distributor (I- 1-1-1) module is close to vertical clapboard (I-2-1) and put down in first quarter moon annular, the straightway of two groups of water distributor (I-1-1-1) modules Row is set, and water inlet pipe (I-1-1-2) is each passed through two groups of water distributor (I-1-1- of distributed area (I-1) side wall connection after being divided into two-way 1) module, and every branch road is provided with control valve；
Described gas distribution pipe (I-1-2-1) module is also leaned in first quarter moon annular, the straightway of two groups of gas distribution pipe (I-1-2-1) modules Nearly vertical clapboard (I-2-1) be arranged in parallel, and appendix (I-1-2-2) is each passed through distributed area (I-1) side wall company after being divided into two-way Lead to two groups of gas distribution pipe (I-1-2-1) modules, and control valve also is provided with every branch road.
4. flotation calcium-removing reactor in granule sludge original position as claimed in claim 1, it is characterised in that described water distributor (I- The vertical range of plane and distributed area bottom surface be 30~50mm where 1-1-1), plane where the gas distribution pipe (I-1-2-1) and The vertical range of distributed area bottom surface is 50~80mm.
5. flotation calcium-removing reactor in granule sludge original position as claimed in claim 1, it is characterised in that described vertical clapboard (I-2-1) on along with three-phase separation area lower edge it is contour, vertical clapboard (I-2-1) lower edge stretches into 10~30mm of distributed area, vertically every Plate (I-2-1) lower edge and the vertical range of distributed area (I-1) bottom surface are 40~60mm.
6. flotation calcium-removing reactor in granule sludge original position as claimed in claim 1, it is characterised in that described three phase separator (I-3-1) fall funnel (I-3-1-1) lower edge with expanding section (I-3-6) along contour, the face of funnel (I-3-1-1) lower edge Product and the area ratio of the three-phase separation area (I-3) at sustained height are 1：2.25；Edge is less than liquid level on upspout (I-3-1-2) 30~50mm；Along 20~30mm of liquid level is higher by drop flow tube (I-3-1-3), drop flow tube (I-3-1-3) lower edge is higher by down funnel (I- Along 20~30mm on 3-1-1).
7. flotation calcium-removing reactor in granule sludge original position as claimed in claim 1, it is characterised in that described decalcification liquid storage tank (II-1) it is 1 with the ratio between the volume of reactor body (I)：2~3.
8. flotation calcium-removing reactor in granule sludge original position as claimed in claim 1, it is characterised in that described reactor body (I) it is 1 with the ratio between the volume of biogas booster jar (III-3)：0.3~0.5.
A kind of 9. granule sludge original position flotation calcium removal methods using reactor as claimed in claim 1, it is characterised in that deliming Process divides four-stage successively：
1) the Aerated stirring stage：Biogas is extracted into booster jar (III-3) by booster pump (III-2) from biogas storage tank (III-1) to be increased Pressure, supercharging biogas enter two groups of gas distribution pipe (I-1-2-1) modules after biogas delivery pipe (III-4), appendix (I-1-2-2) In, in distributed area, (I-1) is uniformly distributed, and bubble uphill process agitation Sludge Bed, alleviates calcification sludge caking situation；
2) the decalcification stage is soaked：The decalcifying Fluid in decalcification liquid storage tank (II-1) is delivered into water by decalcifying Fluid delivery pump (II-2) Manage (I-1-1-2) and two groups of water distributor (I-1-1-1) modules, gradually replace it is granular mud bed in mixed liquor, after the completion of displacement Stop adding decalcifying Fluid, granule sludge is soaked in decalcifying Fluid, with dissolved particles Sludge Surface and internal calcium carbonate；
3) flotation stage is circulated：Supercharging biogas is entered into one group of cloth after biogas delivery pipe (III-4), appendix (I-1-2-2) In tracheae (I-1-2-1) module, another group of gas distribution pipe (I-1-2-1) module is closed；Then the drop in three-phase separation area (I-3) is made Flow tube (I-3-1-3) interior liquid is with certain reflux ratio injection with gas distribution pipe (I-1-2-1) module in opening positioned at perpendicular In water distributor (I-1-1-1) module of straight baffle (I-2-1) the same side, make mixed liquor in distributed area, decalcification area and three phase separation Between area around vertical clapboard (I-2-1) formed in circulate, decalcification granule sludge buoyance lift and be enriched in sludge under flow action Bed top；Then the opening of two groups of gas distribution pipe (I-1-2-1) modules and water distributor (I-1-1-1) module is changed, changes cloth Water side and gas distribution side, circulate mixed liquor opposite direction；After repeating the transfer process several times, the decalcification of calcification granule sludge is completed And flotation；
4) wash phase：Clear water is pumped into in distributed area (I-1), flushing is granular mud bed, removes the decalcifying Fluid of residual.
10. flotation calcium removal methods in granule sludge original position as claimed in claim 9, it is characterised in that clear water or pending waste water The process that is pumped into realization is held a concurrent post by decalcification liquid stream adding system (II).
CN201711449545.0A 2017-12-27 2017-12-27 Granular sludge in-situ flotation calcium removal reactor and method thereof Active CN107879578B (en)

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CN110482696A (en) * 2019-07-31 2019-11-22 广西大学 Block the compound phosphorus base calcification inhibitor and application method of anaerobic grain sludge calcification
CN111172022A (en) * 2020-02-21 2020-05-19 广西贵港华堂天诺微生物科技有限公司 In-situ microorganism collection system

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JPH08141590A (en) * 1994-11-22 1996-06-04 Kurita Water Ind Ltd Anaerobic treatment method
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CN110482696A (en) * 2019-07-31 2019-11-22 广西大学 Block the compound phosphorus base calcification inhibitor and application method of anaerobic grain sludge calcification
CN111172022A (en) * 2020-02-21 2020-05-19 广西贵港华堂天诺微生物科技有限公司 In-situ microorganism collection system

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