CN105293692A - Method for promoting anaerobic treatment efficiency by using continuous sludge granulation - Google Patents
Method for promoting anaerobic treatment efficiency by using continuous sludge granulation Download PDFInfo
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Abstract
The present invention discloses a method for promoting anaerobic treatment efficiency by using continuous sludge granulation, and belongs to the field of environmental engineering sewage treatment. The method is characterized in that one or a plurality of cone groups are added into the reactor of a single-phase anaerobic or two-phase anaerobic process, the contact collision among sludge floc, loose particle sludge and free microorganisms is increased by using the interaction between the horizontal cyclone generated through reflux or mechanical stirring and the cone group, and under effects of hydrophobicity, adhesion and bridging of microorganism extracellular polymers and other additionally-added substances, the sludge structure is further condensed and compacted on the cone surface so as to promote the sludge granulation and improve the sludge concentration. According to the present invention, with the horizontal cyclone generated through reflux or mechanical stirring, the sludge is subjected to rolling compression on the cone wall, such that the collision between the sludge is increased, the effects of the microorganism extracellular polymers and the like in the anaerobic sludge granulation are strengthened, and the anaerobic sludge granulation can be continuously promoted so as to improve the anaerobic sludge concentration and the anaerobic treatment efficiency.
Description
Technical field
The present invention relates to field of environment engineering, particularly relate to the method that the continuous granular sludge of a kind of use promotes anaerobic treatment efficiency.
Background technology
From the research group of Lettinga in 1976 professor and leader thereof with since finding Granular sludge in the upflow anaerobic sludge blanket reactor of anaerobic digester sludge seeding (UASB), about the research of anaerobic granulation and usefulness in the treatment of waste water thereof gets the attention.Granulating refers to that microorganism in biological treatment is under suitable envrionment conditions, is mutually gathered into that a kind of density is comparatively large, comparatively large, the active microbial aggregate preferably of volume.Therefore, the existence of granule sludge can keep high sludge concentration, improves volumetric loading and the impact resistance of system.But anaerobic technique needs longer start time, and when will produce anaerobic grain sludge, required time is longer or required satisfied condition is more.
The formation of granule sludge needs the transmission of momentum and quality, and wherein momentum is mainly provided by the hydraulic action in reactor, can promote the mass transfer between mud, and the contact-impact probability between mud namely can be made to increase.Microorganism extracellular polymeric and additional substance hydrophobic, stick, bridge linking effect can increase effective collision probability between mud, promotes the mutual gathering of mud, and compressed under hydraulic action, closely knit.Above-mentioned multiple effect promotes granular sludge process jointly, and effective strengthening wherein a kind of effect can make the sludge concentration in reactor increase, and improves processing efficiency.
Summary of the invention
For improving the processing efficiency of anaerobic reactor by increasing sludge concentration, the invention provides the method that the continuous granular sludge of a kind of use promotes anaerobic treatment efficiency.
Technical solution of the present invention is as follows: in the reactor of homogenous anaerobic or diphasic anaerobic technique, add one or more cone group; the level rotary flow utilizing backflow or mechanical stirring to produce and the interaction of cone group; increase the contact-impact between mud flco, loose granule sludge and free microorganism; and microorganism extracellular polymeric and other additional substances hydrophobic, stick, under bridge linking effect; sludge structure is further cohesion and closely knit on the conical surface; thus promotion granular sludge, sludge concentration is improved.Each cone group is struggled against by one or more concentric cone and cone group anchor forms.
When adopting backflow to produce level rotary flow, backflow water inlet to be carried out from tangential direction, recycling effluent mouth is furnished with two kinds of modes with backflow water-in, a kind of is the backflow water-in at the corresponding multiple different heights place of recycling effluent mouth, another kind is by reactor segmentation in the height direction, be back to lower from the eminence of every section, and level rotary flow intensity is controlled by quantity of reflux.
When adopting mechanical stirring to produce level rotary flow, level rotary flow intensity can be controlled by leaf blade size, shape or rotating speed.
Other additional substances can be inorganic salts flocculation agents, nature or synthesis organic polymer flocculation agent, microbial flocculant, one or more in active sludge.
Beneficial effect of the present invention is: the level rotary flow produced by backflow or mechanical stirring; mud is rolled on cone wall compress; increase the collision between mud; the effect in anaerobic granulation such as enhancement microbiological extracellular polymeric; anaerobic granulation can be promoted continuously, thus improve anaerobic sludge concentration and anaerobic treatment efficiency.
Accompanying drawing explanation
Accompanying drawing 1: internal reflux UASB-cone group schematic diagram.
2: two sections, accompanying drawing backflow UASB-cone group schematic diagram.
Accompanying drawing 3: mechanical stirring upflow sludge blanket strainer (UBF)-cone group schematic diagram.
Accompanying drawing 4: mechanical stirring Anaerobic Sequencing Bath Reactor (ASBR)-cone group schematic diagram.
Accompanying drawing 5: complete (CSTR)-cone group schematic diagram.
Accompanying drawing 6: cone group and tangent line water inlet vertical view.
In figure: 1. water-in, 2. cone group anchor, 3. cone group, 4. triphase separator, 5. deposit exhalant region, 6. water outlet, 7. escape pipe, 8. phegma gets liquid point, 9.PAM medicine system, 10. pump, 11. valves, 12. phegma water entries, 13. mechanical stirring devices, 14. packing layers.
Embodiment
Below in conjunction with accompanying drawing and example, the invention will be further described, but application of the present invention is not limited thereto.
Basic thought of the present invention is, the interaction of the level rotary flow and the cone group that utilize backflow or mechanical stirring to produce, and microorganism extracellular polymeric and additional substance hydrophobic, stick, under bridge linking effect, promotion granular sludge.
example 1:the internal reflux UASB device shown in accompanying drawing 1-cone group is adopted to promote granular sludge.
In internal reflux UASB, utilize cone group anchor 2 that three groups of cone groups 3 be made up of three cone buckets are installed on different heights position.In internal reflux UASB operational process, intake from conical lower portion water-in 1 and enter, reactor inner bottom part mud granule expands, and granule sludge utilization ratio increases.There are a large amount of little floc sludge and free microorganism in the middle and upper part of the suspended sludge area of triphase separator 4 bottom; backflow is set at this and gets liquid point 8; the flow of phegma and PAM medicine system 9 is controlled by pump 10; two liquid are at pipe-line blending; under PAM effect; the flocculating effect of mud increases, and is conducive to granular sludge.Quantity of reflux on two height is controlled by corresponding valve 11, and phegma from tangential direction water inlet, forms level rotary flow at backflow water entry 12 in reactor; increase the collision between mud; simultaneously under the effect of cone group 3, mud is further compressed and consolidation on the conical surface, promotes granular sludge.
example 2:the segment reflux UASB device shown in accompanying drawing 2-cone group is adopted to promote granular sludge.
Two sections of backflows are set, the top that liquid point 8 is arranged on the cone group 3 of three cone bucket compositions is got in the backflow of every section, and backflow water entry 12 is arranged on below cone group, and UASB reaction zone is divided into mutually non-interfering two parts, each several part ensure that the top condition needed for each section of microorganism, and all the other are with example 1.
example 3:the mechanical stirring UBF-cone group device shown in accompanying drawing 3 is adopted to promote granular sludge.
UBF water outlet carries out mud-water separation through packing layer 14, adds mechanical stirring device 13 in the reactor as additionaling power, and arranges two group of two cone bucket cone group 3.In mechanical stirring UBF-operational process, the stirring intensity of mechanical stirring device 13 on each height can adjust according to practical situation, and by blade shape, size, rotating speed controls, thus controls the size of swirl strength.All the other are with example 1.
example 4:the mechanical stirring ASBR-cone group device shown in accompanying drawing 4 is adopted to promote granular sludge.
Original mechanical stirring device 13 in ASBR is as power, and add two group of two cone bucket cone group 3, ASBR operational process and be divided into into water phase, reaction period, precipitation phase and drainage period, mechanical stirring device ran in the reaction period.All the other are with example 1.
example 5:the CSTR-cone group device shown in accompanying drawing 5 is adopted to promote granular sludge.
CSTR reactor is as the product acid phase of two-phase anaerobic reactor, the mechanical stirring device 13 inside established is for the muddy water mixing in reactor, in CSTR, agitating vane is set at three different heights, foot blade diameter is maximum, one group of two cone bucket cone group is all set below the blade of 2, top, promotes the formation of producing granulates mud in acidogenic reactor.
Claims (5)
1. one kind promotes the method for anaerobic biological treatment efficiency with continuous granular sludge, it is characterized in that: in the reactor of homogenous anaerobic or diphasic anaerobic technique, add one or more cone group, the level rotary flow utilizing backflow or mechanical stirring to produce and the interaction of cone group, increase mud flco, contact-impact between loose granule sludge and free microorganism, and hydrophobic at microorganism extracellular polymeric and other additional substances, stick, under bridge linking effect, sludge structure is further cohesion and closely knit on the conical surface, thus promotion granular sludge, sludge concentration is improved.
2. the continuous granular sludge of a kind of use according to claim 1 promotes the method for anaerobic biological treatment efficiency, it is characterized in that: each cone group is struggled against by one or more concentric cone and cone group anchor forms.
3. the continuous granular sludge of a kind of use according to claim 1 promotes the method for anaerobic biological treatment efficiency, it is characterized in that: when adopting backflow to produce level rotary flow, backflow water inlet to be carried out from tangential direction, level rotary flow intensity is controlled by quantity of reflux, recycling effluent mouth and backflow water-in be furnished with two kinds of modes: a kind of is the backflow water-in at the corresponding multiple different heights place of recycling effluent mouth; Another kind is by reactor segmentation in the height direction, is back to lower from the eminence of every section.
4. the continuous granular sludge of a kind of use according to claim 1 promotes the method for anaerobic biological treatment efficiency, it is characterized in that: when adopting mechanical stirring to produce level rotary flow, level rotary flow intensity can be controlled by leaf blade size, shape, rotating speed.
5. the continuous granular sludge of a kind of use according to claim 1 promotes the method for anaerobic biological treatment efficiency; it is characterized in that: other additional substances can be inorganic salts flocculation agents; nature or synthesis organic polymer flocculation agent, microbial flocculant, one or more in active sludge.
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| CN201510832815.0A CN105293692B (en) | 2015-11-26 | 2015-11-26 | A kind of method for promoting Anaerobic Treatment efficiency with continuous granular sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106145441A (en) * | 2016-07-26 | 2016-11-23 | 江苏圣富利环境工程有限公司 | A kind of fluorine-contained wastewater treatment system |
| CN110054354A (en) * | 2019-04-17 | 2019-07-26 | 安徽建筑大学 | A kind of waste incineration and generating electricity percolate anaerobic processing device |
Citations (2)
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| CN1326804A (en) * | 2001-05-25 | 2001-12-19 | 株洲工学院环保研究所 | Second flow setting method and device |
| CN204727752U (en) * | 2015-04-15 | 2015-10-28 | 大连迈克环境科技工程有限公司 | A kind of mud granule gasifying device |
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2015
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326804A (en) * | 2001-05-25 | 2001-12-19 | 株洲工学院环保研究所 | Second flow setting method and device |
| CN204727752U (en) * | 2015-04-15 | 2015-10-28 | 大连迈克环境科技工程有限公司 | A kind of mud granule gasifying device |
Non-Patent Citations (2)
| Title |
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| 易诚 等: "WSBR培养好氧颗粒污泥的试验研究", 《中国矿业大学学报》 * |
| 易诚 等: "流体力化学-二次流原理在污泥颗粒化中的研究前景", 《南华大学学报（自然科学版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106145441A (en) * | 2016-07-26 | 2016-11-23 | 江苏圣富利环境工程有限公司 | A kind of fluorine-contained wastewater treatment system |
| CN110054354A (en) * | 2019-04-17 | 2019-07-26 | 安徽建筑大学 | A kind of waste incineration and generating electricity percolate anaerobic processing device |
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| CN105293692B (en) | 2018-02-06 |
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