CN209702427U - Low-energy-consumption aeration circulating clarification tank - Google Patents

Low-energy-consumption aeration circulating clarification tank Download PDF

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CN209702427U
CN209702427U CN201821989535.6U CN201821989535U CN209702427U CN 209702427 U CN209702427 U CN 209702427U CN 201821989535 U CN201821989535 U CN 201821989535U CN 209702427 U CN209702427 U CN 209702427U
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area
air lift
zone
energy consumption
flocculation
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李明
危杏
熊丽
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Engelbart Wuhan Ecological Technology Co ltd
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Engelbart Wuhan Ecological Technology Co ltd
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Abstract

The utility model discloses a low energy consumption aeration circulation clarification tank belongs to waste water treatment technical field. The low-energy-consumption aeration circulating clarification tank consists of an air stripping area, a mixing area, a flocculation area, a clarification area and a concentration area, wherein an air lifting device is adopted for sludge circulation, and microporous aeration is adopted for stirring and mixing mixed liquid. The utility model discloses a low energy consumption aeration circulation clarification tank adopts the inside mud sediment backward flow mode of cyclic annular mud sediment circulation and perpendicular mud sediment circulation combination form, has higher unit water yield, more saves medicament, single power equipment, is convenient for operate and advantage such as control.

Description

A kind of low energy consumption aeration cycle clarifying basin
Technical field
The utility model relates to technical field of waste water processing, particularly relate to a kind of low energy consumption aeration cycle clarifying basin.
Background technique
In water treatment field, clarifying basin be it is a kind of by flocculation reaction process and clarification separation of solid and liquid process be incorporated into one Structures.It has a wide range of applications in water treatment technological process, principle is that the work of high concentration bulky grain is formed in pond Property body refuse region, the wadding body of high concentration bulky grain carries out contact flocculation in raw water after making dosing and the region, to increase raw water In small wadding body and these coarse grained collisions, absorption, bonding machine meeting, to achieve the effect that remove small wadding body.Using clear Clear pond goes suspended matter in water removal to have nearly more than 70 years history, and pattern multiplicity has according to its water intake mode and agitating mode division More than 50.Currently, common clarifying basin on the market, although the movement of coagulated particles, collision, agglomeration process be all it is various, But the mechanism such as collision, coalescence between coagulated particles are substantially the same, however particle mutually collides, the mode that coalesces but only collects In in mechanical stirring and hydraulic mixing two ways.
Currently, industry is divided according to the motion state of body refuse (big flocculating body) particle of formation, common clarifying basin is divided into two Big type: 1. sludge circulation type, including accelerator, circulatior clarifier, high dense settling pond;2. body refuse suspends Type, including sludge blanket clarifier, plusator.Various forms of clarifying basins have his own strong points, but have some disadvantages, than Such as: energy consumption is high for mechanical accelerating purifying pool, and easily there was a mechanical failure and maintenance cycle is long, solid-liquid separation effect is bad;Hydraulic Circulation Clarifying basin forms sludge backflow by water-jet, and dosage is big, head loss is big, and sphere of action is little, therefore diameter is smaller, It is only suitable for Small water works;Plusator generates pulse by vacuum pump, and structure is more complex, need to compared with kinetic energy and head loss very Greatly, relatively high to inflow requirement, the pulse period is more difficult to control;Sludge blanket clarifier is become by factors such as raw water water, water quality, water temperatures Change obvious effect, needs larger pond deep, using less in design;I.e. traditional clarifying basin there are low efficiency, take up a large area, The problems such as sludge backflow amount is difficult to control, power consumption is big, head loss is big;High dense settling pond technique is more mature, still There is also very more problems in actual moving process: the disadvantages of energy consumption is high, structure is complicated, more demanding to manager.
The utility model has drawn the advantages of mechanical accelerating purifying pool and high dense settling pond, and overcoming, mechanical acceleration is clear On the basis of clear pond and high dense settling pond disadvantage, having developed one kind has higher specific yield, more saves medicament, is single Power-equipment, aeration combination Circulation clarifying pool easy to operate, and using aeration mode that particle is promoted mutually to collide, coalesce.
Utility model content
To solve deficiency in the prior art, the utility model provides a kind of low energy consumption aeration cycle clarifying basin, has more High specific yield, more save medicament, single power equipment, it is easy to operate the advantages that.
In order to solve the above technical problems, the utility model offer technical solution is as follows:
The utility model provides a kind of low energy consumption aeration cycle clarifying basin, by air lift area, mixed zone, flocculation zone, settling section It is formed with enrichment region, which is characterized in that sludge circulation is carried out using air lift unit, micro-pore aeration is stirred mixing, former Water be added coagulant after be pumped into air lift area, under the action of air lift unit aeration stirring and plug-flow in enrichment region in suspend The rapid contact-impact of circulation body refuse of state, complete medicament, waste water and recycle body refuse quick hybrid reaction, later by plug-flow into Enter mixed zone, and flocculation aid PAM is added and forms big wadding body, and carries out secondary collision flocculation in flocculation zone, part mixes later Liquid is recycled mixed zone, and another part then enters settling section, carries out contact flocculation, and form suspension slime layer, rises mixing Liquid obtains clarification and effluent by the filtering of suspension slime layer, from settling section top water outlet collecting system outflow.
Further, air lift area bottom is connected to enrichment region, and raw water and coagulant are added above air lift area, is helped solidifying Agent is added in air lift area and mixed zone interface, or branch is added at the top of flocculation zone.
Preferably, air lift area inlet flow rate is 0.05m/s~1m/s;Exit velocity is 0.1m/s~3m/s.
It preferably, is the contact-impact condition for realizing generation coagulation in mixed process in air lift area, used micro-pore aeration It is 0.3m that pipe, which is aerated flux,3/ mh~5m3/m·h。
Preferably, the width in the air lift area and mixed zone are of same size.
Further, the mixed zone bottom is configured with micro-hole aerator.
It preferably, is control flocculation Con trolling index, micropore aeration pipe ventilatory capacity selected by mixed zone is 0.05m3/ mh~ 3m3/m·h。
Further, the mixed zone, flocculation zone are connected to settling section bottom, and settling section bottom is provided with towards wadding The inclined plate of coagulation zone.
Further, the enrichment region bottom is provided with bucket, and the bucket lower part is connected with spoil disposal pipeline.
Further, the flocculation sector width is 50mm~300mm, and water outlet flow velocity is 0.05mm/s~1mm/s.
Further, the settling section is configured with filler, and the filler is vertical filler or inclined tube filler.
In the utility model aeration combination Circulation clarifying pool operational process: raw water adds coagulant and is pumped into air lift area, in sky It is connect rapidly under the collective effect of gas lifting device aeration stirring, promotion and plug-flow with the circulation body refuse in enrichment region being in suspended state Touching is hit, and medicament, waste water and the quick hybrid reaction process for recycling body refuse is completed, later via the top exit in air lift area, quilt Plug-flow forms whole cyclic annular sludge circulation state to mixed zone.It is exported in air lift area or branch addition helps at the top of flocculation zone Solidifying agent PAM is formed by uniform vertical sludge circulation in aerator system (on fluidised form stroke) with the mixed liquor for entering mixed zone The bulky grain body refuse of under effect and settling section bottom reflux is in contact flocculation, forms big wadding body.It is mixed at the top of mixed zone Liquid overturning enters flocculation zone, and air is released, and wadding body carries out secondary collision flocculation.Mixed liquor is discharged from flocculation zone bottom, Density current ringing, which is again aspirated, in the mixed area of wherein most is back to mixed zone, and another part then enters settling section, Mixed liquor can flow serially through filler in settling section.In settling section, wadding body rises the common work of fluidised form in self gravity and water body Under, contact flocculation is carried out again, and forms suspension slime layer in filler, and filler top is clear water layer, and clear water is by flooding Aperture enters water outlet collecting system and is discharged.Slime layer in settling section belongs to the state of dynamic equilibrium, and big flocculating body can be in weight It falls off and slides to mixed zone from suspension slime layer under the action of power, by density current suction, promotion landing to flocculation zone and mix Then the bottom connector in area is aspirated by density current, is promoted to mixed zone, participate in contact flocculation reaction again, small wadding body is upper It is suspended slime layer filtering absorption during rising and fills up slime layer again.Mixed zone enters enrichment region from top water outlet, very greatly Wadding body can along bucket glide then drop into bottom of pond, sludge is concentrated in bottom of pond.Small wadding body or medium sized wadding body It is most of to mention area in the air lift ringing suction return gas that bucket top is stripped area's air lift unit, as " wadding core " and join With the hybrid reaction of water inlet.Primary water is collected at the top of settling section by flooding orifice outflow.
Compared with prior art, the utility model has the following beneficial effects:
(1) reflux body refuse concentration is high, regurgitant volume is big, low energy consumption tradition machinery accelerating purifying pool using mechanical stirring impeller into The internal sludge circulation of row, and high dense settling pond then uses sludge pump to carry out external sludge circulation, if this kind of mechanical device recycles The body refuse of larger flow, the energy consumption that is bound to is larger, and the utility model carries out sludge backflow using air lift unit, not only can be with The integrality for guaranteeing wadding body is providing 1m3About 50-100m can also be recycled in the case where the air of/h3The mixed liquor of/h, significantly Operation energy consumption is saved;Furthermore, it is possible to adjust the supply tolerance of air lift unit, control loop body refuse by automatic frequency-conversion Amount operates extremely convenient;
(2) flocculation process is improved, improves flocculating effect due to using cyclic annular sludge circulation and the combination of vertical sludge circulation The inside sludge backflow mode of form, water flow are gradually flocculated in entire mixed zone and flocculation zone and vertical rectangle oblique filler Becoming larger, not only extend flocculation process, also adds flocculation time, each section of flocculation zone energy distribution successively weakens, and distribution is reasonable, Compared with the growth that tradition machinery accelerating purifying pool and high dense settling pond are more advantageous to wadding body, reduces added amount of chemical, create Objective economic benefit;
(3) space utilization rate is high, and solid loading stablizes the utility model from inlet water to outlet water, and water flow is fully according to designed Route reciprocation cycle operation, successively pass through air lift area, mixed zone, flocculation zone, settling section, enrichment region, not only compared with tradition machinery Accelerating purifying pool and high dense settling pond space utilization rate be higher, it is ensured that the wadding body in pond is constantly in optium concentration, In In the case where not considering influent density and flow, it is ensured that the integrality of wadding body and the metastable solid loading in clarifying basin;
(4) it is separated by solid-liquid separation thoroughly, small wadding body removal efficiency is high;Water outlet organic principle (VSS) is lower, body refuse dewatering It is good;Mechanical equipment is few, and maintenance is simple, easy to operate;Capacity of resisting impact load is stronger, unwise to the flow and variation water quality of water inlet Sense.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the aeration combination Circulation clarifying pool of the utility model;
Fig. 2 is the schematic diagram of the section structure of A-A in Fig. 1;
Fig. 3 is the schematic diagram of the section structure of B-B in Fig. 1;
Fig. 4 is that the aeration of the utility model combines mixed liquor fluidised form schematic diagram one in Circulation clarifying pool;Wherein, arrow direction Indicate mixed liquor flow direction;
Fig. 5 is that the aeration of the utility model combines mixed liquor fluidised form schematic diagram two in Circulation clarifying pool;Wherein, arrow direction Indicate mixed liquor flow direction.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing And specific embodiment is described in detail.
Embodiment 1
A kind of low energy consumption aeration cycle clarifying basin, such as Fig. 1-5, including air lift area 1, enrichment region 6, mixed zone 3, flocculation zone 4, Settling section 5 is wherein:
1 bottom of air lift area is connected to enrichment region 6, and water inlet, the outlet of air lift area 1 connection mixing are provided at the top of air lift area 1 Area 3 is provided with air lift unit 2 in air lift area 1;
The two sides of mixed zone 3 are provided with flocculation zone 4, and bottom is provided with micro-hole aerator system 8;
The bottom of mixed zone 3 is connected to flocculation zone 4, and the mixed liquor in mixed zone 3 flows out to flocculation zone 4 from top, mixing 3 end top of area is connect with enrichment region 6;
It is provided with settling section 5 on the outside of flocculation zone 4, filler 7 is provided in settling section 5, top is provided with water outlet collection water system System, flocculation zone 4 are connected to 5 bottom of settling section.
Water flow is transported fully according to designed route reciprocation cycle in the low energy consumption aeration cycle clarifying basin of the utility model Row successively passes through air lift area, mixed zone, flocculation zone, settling section, enrichment region, and space utilization rate is high, using air lift unit into Row sludge backflow can not only guarantee the integrality of wadding body, provide 1m3It can also be recycled about in the case where the air of/h 300m3The mixed liquor of/h, is greatly saved operation energy consumption;Furthermore, it is possible to adjust the confession of air lift unit by automatic frequency-conversion To tolerance, control loop body refuse amount is operated extremely convenient;Using in cyclic annular sludge circulation and vertical sludge circulation combining form Portion's sludge backflow mode, gradually flocculation becomes larger water flow in entire mixed zone and flocculation zone and filler, not only extends flocculation Process also adds flocculation time, and each section of flocculation zone energy distribution successively weakens, and distribution rationally, compared with tradition machinery accelerates to clarify Pond and high dense settling pond are more advantageous to the growth of wadding body, realize the high efficiency removal of small wadding body in system.
Further, the bottom of pond of settling section 5 is provided with towards the inclined inclined plate 9 of flocculation zone 4, to guarantee the circulation of liquid Flow direction.
Further, 6 bottom of enrichment region is provided with bucket 6-1, and bucket lower part is connected with spoil disposal pipeline, very big wadding body It can glide and then be dropped into spoil disposal pipeline along bucket, sludge is concentrated;Bottom connection between air lift area 1 and enrichment region 6 Mouth is on the outside of the middle and upper part of bucket 6-1.
To avoid occurring turbulent flow in enrichment region, it is preferred that 1 inlet flow rate of air lift area is 0.05m/s~1m/s;It is clear to improve The ring-like cycle efficieny in clear pond, it is preferred that 1 exit velocity of air lift area is 0.1m/s~3m/s;
To reach best flocculating effect, the width of mixed zone is 200mm~2000mm.
In order to reduce medicine consumption, flocculating effect is improved, it is preferred that 4 width of flocculation zone is 50mm~300mm, water outlet flow velocity For 0.05mm/s~1mm/s.
Further, air lift area 1 and enrichment region 6 are disposed in parallel in one end of clarification pond body longitudinal direction, and mixed zone 3 is U Shape structure, so that clarifying basin is compact-sized, small volume.
In order to improve the stability and the adherency of tiny wadding body, precipitating removal rate of suspension slime layer, it is preferred that adopted in settling section Sludge separation/enrichment the method proposed with Chinese patent application 201610486954.7, the water body force and velocity of a current change tradition machinery 60 ° of angular fluxs of inclination of accelerating purifying pool and high dense settling pond inclined-tube sedimentation tank are to whole is in from bottom to top to move, suspension body refuse Layer be separated from water it is more thorough, the special structure type of bending guide corrugated regular filler possess compare inclined tube filler it is bigger sink Shallow lake area can more efficiently precipitate the small wadding body of removal, reach higher whole removal efficiency.
Suspension slime layer in the utility model settling section is that the suspension wadding body in water is reached by gravity and buoyancy Balance " filter bed " formed, when filter bed reaches the granularity of certain depth and medium in vertical rectangle oblique filler, wadding body into Enter filter bed, is formed " volume filtration " rather than " surface filtration " of traditional inclined tube filler, is able to intercept, filters and will remain in Suspended matter in primary water is reduced to negligible.Therefore, the pollutant carrying capacity of the more traditional settling section of the utility model is bigger, Can be avoided causes water to fluctuate because raining, and causes flocs float phenomenon.
It further, is the contact-impact condition for realizing generation coagulation in mixed process in air lift area, air lift unit 2 Interior used micropore aeration pipe aeration flux is 0.3m3/ mh~5m3/m·h。
Further, to control flocculation Con trolling index convenient for mixed zone, micropore aeration pipe used by the bottom of mixed zone Ventilatory capacity is 0.05m3/ mh~3m3/m·h。
The mixing of conventional high-density clarifying basin, flocculation and sludge backflow are all made of mechanical system, and most of for underwater peace Dress, Maintenance and Repair are difficult, and intensity is big, the period is long, and the unique energy consumption equipment of the utility model is blast apparatus, promote dress for air It sets and provides air-source with aerator system, it is easy for installation without any underwater engine component, mechanical stirring equipment is eliminated, is subtracted Lack a large amount of flight-line maintenance work, saves man power and material.The utility model flow dynamic is air, is exposed using air blast Gas is stirred and not only saves energy consumption, but also can also remove certain volatile organic matter using stripping, while reducing body refuse Resistivity, show as better body refuse dewatering, the added amount of chemical of less body refuse dehydration.
Preferably, the width in air lift area and mixed zone are of same size, and the length in air lift area is identical as concentration section length, in this way Space utilization rate is high.
The advantages of motion state of body refuse (big flocculating body) particle has followed mechanical accelerating purifying pool inside the utility model-mud Slag circulation, and have developed the novel architecture of cyclic annular sludge circulation and vertical sludge circulation two ways combining form.It is organized Matching relationship and principle are: raw water is added coagulant and is pumped into air lift area, in air lift unit aeration stirring, promotion and plug-flow Collective effect under in enrichment region be in suspended state the rapid contact-impact of circulation body refuse, complete medicament, waste water and circulation mud The quick hybrid reaction process of slag forms whole cyclic annular mud by plug-flow to mixed zone via the top exit in air lift area later Slag recurrent state.Flocculation aid PAM is added in the outlet of air lift area, with the mixed liquor into mixed zone in aerator system (fluidised form stroke On) be formed by the bulky grain body refuse that the effect of uniform vertical sludge circulation is lower and settling section bottom is flowed back and be in contact flocculation, shape At big wadding body.Mixed liquor overturning enters flocculation zone at the top of mixed zone, declines the gentle bubble buoyance lift of fluidised form in gravitational settling, water body Complexing action under, air is released, wadding body carry out secondary collision flocculation.Mixed liquor is discharged from flocculation zone bottom, wherein Density current ringing, which is again aspirated, in most of mixed area is back to mixed zone, and another part then enters settling section, mixing Liquid can flow serially through filler in settling section, and wadding body carries out again in the case where self gravity and water body rise the collective effect of fluidised form Contact flocculation, and suspension slime layer is formed in filler, filler top is clear water layer, and clear water enters water outlet collection by flooding aperture Water system is discharged.Slime layer in settling section belongs to the state of dynamic equilibrium, and big flocculating body can be under gravity from outstanding Mud scum slag blanket falls off and slides to mixed zone, by density current suction, is promoted to mixed zone, participates in contact flocculation reaction again, small Wadding body is suspended slime layer filtering absorption in uphill process and fills up slime layer again.Mixed zone tail portion enters dense from top water outlet Contracting area, very big wadding body can glide along bucket and then drop into bottom of pond, and sludge is concentrated in bottom of pond.Small wadding body or medium The wadding body of size is most of to mention area in the air lift ringing suction return gas that bucket top is stripped area's air lift unit, as " wadding core " and the hybrid reaction for participating in water inlet.
Above-described embodiment is only a kind of embodiment of the utility model, is not made in any form to the utility model Limitation.On the basis of not violating utility model device operation logic, those skilled in the art can be according to existing actual conditions The number of mixed zone, flocculation zone and settling section determined, the above change is regarded as the protection scope of the utility model.
Embodiment 2
Some ceramic factory production waste water, influent quality COD:20mg/L, SS:400~600mg/L.Advanced conditioning tank is preliminary Then sedimentation, separation are discharged subsequently into circular treatment is carried out in the aeration combination Circulation clarifying pool of the utility model.
Aeration combination Circulation clarifying pool installs 2 Roots blowers, installation power 4.4KW, the using and the reserved.PAC medicament is thrown Dosage: 30~80g/m3, PAM added amount of chemical: 2~10g/m3, amount of inlet water 400m3/ h, surplus sludge volume discharge amount are 6 ~8m3/ h, after the utility model is aerated combination Circulation clarifying pool processing, effluent quality COD≤15mg/L, SS≤20mg/L, It is discharged limpid, high-visible packing layer.
To sum up, integrating for the utility model exploitation optimizes reflux in body refuse, way of clarification and single power equipment Clarifying basin, has that higher specific yield, more to save medicament, single power equipment, wadding body removal rate high, easy to operate etc. excellent Point.
It is preferred embodiments of the present invention above, it is noted that for those skilled in the art For, without departing from the principle of this utility model, it can also make several improvements and retouch, these improvements and modifications It should be regarded as the protection scope of the utility model.

Claims (8)

1. a kind of low energy consumption aeration cycle clarifying basin, is made of air lift area, mixed zone, flocculation zone, settling section and enrichment region;It is special Sign is,
Air lift area bottom is connected to enrichment region, is provided with water inlet at the top of air lift area, and air lift is provided with air lift unit in area, Air lift area, connection mixed zone, outlet;The two sides of mixed zone are provided with flocculation zone;The bottom of mixed zone is connected to flocculation zone, mixing Area's end top is connect with enrichment region;It is provided with settling section on the outside of flocculation zone, is provided with water outlet collecting system at the top of settling section, wads a quilt with cotton Coagulation zone bottom is connected to settling section bottom.
2. low energy consumption aeration cycle clarifying basin according to claim 1, which is characterized in that the mixed zone bottom is configured with Micro-hole aerator.
3. low energy consumption aeration cycle clarifying basin according to claim 1, which is characterized in that the settling section bottom is provided with Towards the inclined plate of flocculation zone.
4. low energy consumption aeration cycle clarifying basin according to claim 1, which is characterized in that the enrichment region bottom is provided with Bucket, the bucket lower part are connected with spoil disposal pipeline;Bottom communication port between the air lift area and enrichment region is located at the mud On the outside of the middle and upper part of bucket.
5. low energy consumption aeration cycle clarifying basin according to claim 1, which is characterized in that the flocculation sector width is 50mm ~300mm.
6. low energy consumption aeration cycle clarifying basin according to claim 1, which is characterized in that the settling section is configured with and fills out Material, the filler are vertical filler or inclined tube filler.
7. -6 any low energy consumption aeration cycle clarifying basin according to claim 1, which is characterized in that the air lift area and dense Contracting area is disposed in parallel in one end of clarification pond body longitudinal direction.
8. low energy consumption aeration cycle clarifying basin according to claim 7, which is characterized in that the mixed zone is U-shaped structure.
CN201821989535.6U 2018-11-29 2018-11-29 Low-energy-consumption aeration circulating clarification tank Active CN209702427U (en)

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