CN209161749U - A kind of pulling flow type coupling sewage-treatment plant - Google Patents
A kind of pulling flow type coupling sewage-treatment plant Download PDFInfo
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- CN209161749U CN209161749U CN201821407692.1U CN201821407692U CN209161749U CN 209161749 U CN209161749 U CN 209161749U CN 201821407692 U CN201821407692 U CN 201821407692U CN 209161749 U CN209161749 U CN 209161749U
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Abstract
The utility model discloses a kind of pulling flow types to couple sewage-treatment plant, the sewage-treatment plant includes reaction unit, water feed apparatus, mixed liquor reflux unit, sludge refluxing apparatus, chemicals dosing plant, aeration control device and spoil disposal control device, reaction unit includes anaerobic zone, anoxic zone, aerobic zone and solid-liquid displacement zone, water feed apparatus is connect with anaerobic zone, chemicals dosing plant is connect with aerobic zone, mixed liquor reflux unit connects aerobic zone and anoxic zone, and sludge refluxing apparatus connects solid-liquid displacement zone and anaerobic zone；It is provided with agitating device in anaerobic zone, agitating device and fixed type biological membrane carrier filler are provided in anoxic zone, aerator and fixed metazoa carrier filler are provided in aerobic zone, solid-liquid displacement zone bottom is provided with mud discharging device.30% or more the sludge yield of sewage generation can be reduced using the sewage-treatment plant, reduced excess sludge and handled disposal costs, advanced nitrogen can be realized without increasing tertiary treatment process.
Description
Technical field
The utility model relates to sanitary sewage disposal technical field, in particular to a kind of pulling flow type coupling sewage treatment dress
It sets.
Background technique
China most cities sewage treatment plant uses plug-flow type active sludge method and its deformation technique, such as A2/ O technique,
A/O technique, inversion A2/ O technique etc..There are the following problems in actual moving process for above-mentioned sewage treatment process:
1) excess sludge production is big, processing disposition is difficult: the Activated Sludge Process that urban wastewater treatment firm generallys use
Have the shortcomings that excess sludge yield is big.Contain a large amount of persistent organic pollutants, heavy metal in excess sludge and causes a disease micro-
The harmful substances such as biology, processing disposition difficulty is big, at high cost, and processing disposal costs account for about the 25%- of sewage treatment total cost
60%.
Burning, agricultural use and landfill stabilization after the processing method of disposal of excess sludge is predominantly dehydrated at present.Wherein, dirty
Mud burning expense is excessively high, the safety of impact of heavy metals agricultural use, thus most excess sludges use landfill stabilization.It fills out
Burying disposition, there is the contaminated lands such as heavy metal, toxic organic compound and underground water, generation toxic and harmful gas, a large amount of soils of occupancy
Etc. insoluble problem, it has also become puzzlement urban development, the huge difficult problem for influencing living environment.
2) it is difficult to adapt to the discharge standard being continuously improved: currently, national departments concerned is studying revision " at town sewage
Manage factory's pollutant emission standard " (GB18918-2002), exposure draft has been issued, " special emission limit " is increased, it is desirable that
Territorial development density is high, environmental bearing capacity is weak, environmental carrying capacity is small, ecological environment frailty or is easy to happen Heavy environmental pollution
The area of problem executes special emission limit, for the regional requirements sewage disposal plant effluent of water eutrophication outstanding problem
TN value≤10mg/L.Activated Sludge Process that urban wastewater treatment firm generallys use water outlet total nitrogen usually 15~20mg/L it
Between, it is unable to satisfy the requirement that water outlet total nitrogen is less than 10mg/L.Increase tertiary treatment process (such as anti-digestion filter tank additional carbon), both
Increase occupied area, and increase investment and operating cost, it is difficult to implement.Especially the sewage treatment plant of built operation is carried out
Mention mark transformation, by can not increase newly land used, prior art can not stop production transformation etc. factors influenced, it is more difficult to implement.
Therefore, need to develop that a kind of denitrification effect is good, excess sludge production is small, the municipal sewage easy to implement for proposing mark transformation
Processing equipment.
Utility model content
The purpose of this utility model is to provide a kind of pulling flow types to couple sewage-treatment plant, to solve above-mentioned background technique
The problem of middle proposition.
Used technical solution to solve above-mentioned technical problem: a kind of pulling flow type couples sewage-treatment plant, including anti-
Answer device, water feed apparatus, mixed liquor reflux unit, sludge refluxing apparatus, chemicals dosing plant, aeration control device and spoil disposal control dress
It sets, the reaction unit includes the anaerobic zone being successively disposed adjacent, anoxic zone, aerobic zone and solid-liquid displacement zone, the water inlet dress
It sets and is connect by pipeline with anaerobic zone, the chemicals dosing plant is connect by pipeline with aerobic zone end, the mixed liquor reflux dress
It sets and aerobic zone end and anoxic zone front end is connected by pipeline, the sludge refluxing apparatus connects solid-liquid displacement zone bottom by pipeline
Portion and anaerobic zone front end；It is provided with agitating device in the anaerobic zone, agitating device and fixed is provided in the anoxic zone
Biofilm carrier filler is provided with aerator and fixed metazoa carrier filler, the solid-liquid point in the aerobic zone
Area bottom is provided with mud discharging device；The fixed type biological membrane carrier filler and fixed metazoa carrier filler are fixed
Region in reaction unit below liquid level, more than agitating device or aerator.
Further, the fixed type biological membrane carrier filler and fixed metazoa carrier filler are in reaction unit
Packing ratio be 20%~70%.
Further, the aerator is formed by air blower, multiple aeration plates and with casing valve.
Further, the mixed liquor reflux unit and sludge refluxing apparatus are made of pipeline and pipeline pump.
The utility model has the beneficial effects that
1) sewage-treatment plant of the utility model is suitable for aerator and fixed rear life in aerobic zone dissolved oxygen concentration
Animal carrier arrangement matches in reasonable situation, can be enriched with and fix on the fixed metazoa carrier filler in aerobic zone
A large amount of metazoas, the mud decrement mechanism based on microfauna prey, can largely consume the mistake generated in sewage disposal process
It measures activated sludge, that is, excess sludge and can be relieved sewage treatment so as to substantially reduce the discharge amount of process system excess sludge
Pressure is disposed in the processing of the excess sludge of generation, is reduced excess sludge and is handled disposal costs.
2) sewage-treatment plant of the utility model is suitable for agitating device and fixation in anoxic zone dissolved oxygen value, reflux ratio
Formula biofilm carrier arrangement matches in reasonable situation, the fixed type biological membrane carrier filler surface in anoxic zone can be enriched with and
Fixed a large amount of denitrifying bacterias, the growth of denitrifying bacteria comprehensive organism amount can be obviously improved the denitrifying capacity of system, thus
Advanced nitrogen can be realized without increasing tertiary treatment process, effluent quality can be made to meet " urban wastewater treatment firm pollutant
Discharge standard " (exposure draft) " special emission limit " requirement, water outlet ammonia nitrogen be less than 0.5mg/L, total nitrogen be less than 10mg/L.
3) the utility model is used to propose to the sewage treatment plant of built operation mark transformation, only need to be in anoxic zone, good
Fixed type biological membrane carrier filler and fixed metazoa carrier filler are added in oxygen area respectively, adjusting process parameter can be complete
At transformation.Since without having to the larger change of original process pond body progress, project amount is small, the off-time is short, small investment, is easy to real
It applies and the advantages that operation and maintenance are easy, sewage treatment plant can be met higher than " level-one A " standard and propose mark transformation demand.
Detailed description of the invention
The utility model is described further with reference to the accompanying drawings and examples:
Fig. 1 is the structural schematic diagram that the utility model pulling flow type couples sewage-treatment plant.
Description of drawing identification: the anaerobic zone 1-, the anaerobic zone 2- agitating device, the anoxic zone 3-, the anoxic zone 4- agitating device, 5- are solid
Fixed pattern biofilm carrier filler, the aerobic zone 6-, 7- aeration control device, the fixed metazoa carrier filler of 8-, 9- solid-liquid point
From area, 10- water feed apparatus, 11- mixed liquor reflux unit, 12- chemicals dosing plant, 13- sludge refluxing apparatus, 14- aerator,
15- spoil disposal control device, 16- mud discharging device.
Specific embodiment
Referring to Fig.1, a kind of pulling flow type couples sewage-treatment plant, including the reflux of reaction unit, water feed apparatus 10, mixed liquor
Device 11, sludge refluxing apparatus 13, chemicals dosing plant 12, aeration control device 7 and spoil disposal control device 15；Reaction unit include according to
The secondary anaerobic zone 1 being disposed adjacent, anoxic zone 3, aerobic zone 6 and solid-liquid displacement zone 9；The side of anaerobic zone 1 is successively set from top to bottom
It is equipped with water inlet and sludge reflux entrance, water feed apparatus 10 is connect by pipeline with the water inlet of anaerobic zone 1, and water feed apparatus 10 will
Sewage is passed through reaction unit from reaction unit bottom；The side of anoxic zone 3 is provided with mixed liquor reflux inlet, the side of aerobic zone 6
Face is provided with mixed liquor bypass outlet, and mixed liquor reflux unit 11 is returned by the mixed liquor that pipeline connects 6 end profile of aerobic zone
The mixed liquor reflux inlet of 3 front end side of outflux and anoxic zone；9 upper end of solid-liquid displacement zone is provided with supernatant outlet, bottom end
It is provided with mud discharging device 16, sludge refluxing apparatus 13 connects the mud discharging device 16 and anaerobism of 9 bottom of solid-liquid displacement zone by pipeline
The sludge reflux entrance of 1 front end of area, chemicals dosing plant 12 are connect by pipeline with 6 end of aerobic zone.Anaerobism is provided in anaerobic zone 1
Area's agitating device 2, anoxic zone agitating device 4 and apposition growth are provided in anoxic zone 3 has the fixed type biological film of biomembrane to carry
Body filler 5, being provided with aerator 14 and apposition growth in aerobic zone 6 has the fixed metazoa carrier filler of metazoa
8, the outside of aerobic zone 6 is arranged in control the blow rate required of aerator 14 in aeration control device 7, and spoil disposal control device 15 is arranged
The discharge of precipitating sludge in solid-liquid displacement zone 9 is controlled in the outside of solid-liquid displacement zone 9；5 He of fixed type biological membrane carrier filler
Fixed metazoa carrier filler 8 is each attached in reaction unit below liquid level, agitating device or 14 or more aerator
Region.This sewage-treatment plant adheres to bed without external metazoa, integrates and realizes in the device and is caught based on microfauna
The sludge reduction functions of food.
One kind as the utility model preferably, fill out by fixed type biological membrane carrier filler 5 and fixed metazoa carrier
Packing ratio of the material 8 in reaction unit is 20%~70%.
Preferably, mixed liquor reflux unit 11 and sludge refluxing apparatus 13 are by pipeline and pipe for one kind as the utility model
Road pump group at.The reflux ratio of mixed liquor reflux unit is (2~4): 1, the reflux ratio of sludge refluxing apparatus is (1~2): 1.
Preferably, aerator 14 is formed one kind as the utility model by air blower, multiple aeration plates and with casing valve,
Gas-water ratio when aerator 14 is aerated is (3~8): 1.
The principles of the present invention: a large amount of biologies are grown on the fixed type biological membrane carrier filler 5 that anoxic zone 3 is added
Film grows a large amount of microorganisms, microfauna in biomembrane, while containing a large amount of activated sludge in sewage, raw in activated sludge
Have a large amount of microorganisms, microfauna, and on fixed type biological membrane carrier filler 5 in biomembrane with it is micro- in activated sludge in water
Biology, the type of microfauna are different, distribution is different, by these microorganisms, the synergistic effect of microfauna, i.e., biomembrane with
The coupling of activated sludge may be implemented intensified anti-nitrated effect, achieve the purpose that advanced nitrogen, be less than water outlet ammonia nitrogen
0.5mg/L, total nitrogen are less than 10mg/L.Meanwhile aerobic, grown on the fixed metazoa carrier fillers 8 of 6 additions a large amount of
Metazoa, metazoa can prey on activated sludge, so that excess sludge reduction be made to can achieve 30% or more, be discharged water
Matter reaches surface water class IV class standard, meets " urban wastewater treatment firm pollutant emission standard " (exposure draft) " especially row
Put limit value " requirement.
The sewage treatment process implemented using above-mentioned sewage-treatment plant, comprising the following steps:
1) after sewage being removed rubbish and silt by grid, setting pot, recycle water feed apparatus 10 will be dirty by pipeline
Water is delivered to anaerobic zone 1 in such a way that lower end is flooded into water；
2) mix water inlet and returnedactivatedsludge in anaerobic zone 1 sufficiently using the stirring action of anaerobic zone agitating device 2
It closes；
3) the muddy water mixed solution gravity flow in anaerobic zone 1 enters in the anoxic zone 3 for being equipped with fixed type biological membrane carrier filler 5,
And it is mixed with 6 muddy water mixed solution of aerobic zone that mixed liquor reflux unit 11 is delivered in anoxic zone 3；
4) by the stirring action of anoxic zone agitating device 4, muddy water in anoxic zone 3 is kept to be sufficiently mixed, and with it is fixed
Biomembrane on biofilm carrier filler 5 comes into full contact with；
5) the muddy water mixed solution gravity flow in anoxic zone 3 enters the aerobic zone for being provided with fixed metazoa carrier filler 8
6；
6) air quantity that air blower is controlled by aeration control device 7 carries out blast aeration to aerobic zone 6, makes in aerobic zone 6
Muddy water mixed solution is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler 8；It and is aerobic zone 6
Metazoa on microorganism, fixed metazoa carrier filler 8 in interior muddy water mixed solution etc. is provided needed for growth and breeding
The oxygen wanted；
7) Dephosphorization reagent is added by chemicals dosing plant 12 in 6 rear end of aerobic zone, muddy water mixed solution gravity flow enters solid after dosing
Liquid Disengagement zone 9；
8) sludge precipitated by solid-liquid displacement zone 9 is delivered to anaerobic zone 1 by sludge refluxing apparatus 13；
9) step 1)~8 are repeated) operation, until the liquid level of precipitating sludge increases to apart from the water surface in solid-liquid displacement zone 9
Height reach setting value, pass through spoil disposal control device 15 control 16 discharge part solid-liquid displacement zone of mud discharging device, 9 bottom precipitation
Except sludge to sewage-treatment plant, processing disposition is carried out；
10) repeat step 1)~9) operation.
Preferably, 1 hydraulic detention time of anaerobic zone is 0.5~1h in step 2), DO value is lower than 0.2mg/L.
Preferably, 3 hydraulic detention time of anoxic zone is 2~4h in step 4), DO value is between 0.2~0.5mg/L.
Preferably, in step 6) 6 hydraulic detention time of aerobic zone be 2.5~3.5h, DO value 1.5~3.5mg/L it
Between.
Preferably, one kind as the utility model is preferably, Dephosphorization reagent is aluminium polychloride in step 7), polymerize chlorine
The dosage for changing aluminium is 4~8mg/L.
Preferably, 9 waterpower surface loading of solid-liquid displacement zone is 1~1.5m in step 8)3/(m2·h)。
Preferably, the volume for the precipitating sludge being discharged in step 9) is the 20%~50% of 9 total volume of solid-liquid displacement zone.
Embodiment 1:
Production the utility model a kind of pulling flow type coupling sewage-treatment plant (referring to Fig.1, treatment scale be about 120 tons/
It).
Sewage treatment is carried out using the sewage-treatment plant, operating procedure is as follows:
1) after the sewage of Guangzhou sewage treatment plant being removed rubbish and silt by grid, setting pot, recycle into
Sewage is delivered to the anaerobic zone 1 of reaction unit pipeline by water installations 10 in such a way that lower end is flooded into water；
2) keep water inlet in anaerobic zone 1 and returnedactivatedsludge abundant using the stirring action of anaerobic zone agitating device 2, detest
1 hydraulic detention time of oxygen area is 1h, and DO value is 0.15mg/L；
3) the muddy water mixed solution gravity flow in anaerobic zone 1 enters in the anoxic zone 3 for being equipped with fixed type biological membrane carrier filler 5,
And it is mixed with 6 muddy water mixed solution of aerobic zone that mixed liquor reflux unit 11 is delivered in anoxic zone 3；
4) by the stirring action of anoxic zone agitating device 4, muddy water in anoxic zone 3 is kept to be sufficiently mixed, and with it is fixed
Biomembrane on biofilm carrier filler 5 comes into full contact with, and 3 hydraulic detention time of anoxic zone is 3h, and DO value is 0.3mg/L；
5) the muddy water mixed solution gravity flow in anoxic zone 3 enters the aerobic zone for being provided with fixed metazoa carrier filler 8
6；
6) air quantity that air blower is controlled by aeration control device 7 carries out blast aeration to aerobic zone 6, makes in aerobic zone 6
Muddy water mixed solution is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler 8；It and is aerobic zone 6
Metazoa on microorganism, fixed metazoa carrier filler 8 in interior muddy water mixed solution etc. is provided needed for growth and breeding
The oxygen wanted, 6 hydraulic detention time of aerobic zone are 3h, and DO value is 2mg/L；
7) aluminium polychloride, dosage 4mg/L, muddy water after dosing are added by chemicals dosing plant 12 in 6 rear end of aerobic zone
It is 1m that mixed liquor gravity flow, which enters surface loading,3/(m2H) solid-liquid displacement zone 9；
8) through detecting, sludge interface 2m below the water surface in solid-liquid displacement zone 9 judges that process system does not need spoil disposal；
9) sludge precipitated by solid-liquid displacement zone 9 is delivered to anaerobic zone 1 by sludge refluxing apparatus 13 and handles dirt again
Water, return sludge ratio 100%.
Sewage treatment result:
Influent quality is as shown in the table:
1 influent quality of table (unit: mg/L)
Effluent quality is as shown in the table:
2 effluent quality of table (unit: mg/L)
From Tables 1 and 2: using a kind of pulling flow type coupling sewage-treatment plant of the utility model to Guangzhou dirt
The sewage of water treatment plant is handled, and effluent quality index can achieve " urban wastewater treatment firm pollutant emission standard " (sign
Seek opinion original text) " special emission limit " requirement.
Embodiment 2:
Production the utility model a kind of pulling flow type coupling sewage-treatment plant (referring to Fig.1, treatment scale be about 120 tons/
It).
The processing of sewage is carried out using the sewage-treatment plant, comprising the following steps:
1) after the sewage of Guangzhou sewage treatment plant being removed rubbish and silt by grid, setting pot, recycle into
Sewage is delivered to the anaerobic zone 1 of reaction unit pipeline by water installations 10 in such a way that lower end is flooded into water；
2) keep water inlet in anaerobic zone 1 and returnedactivatedsludge abundant using the stirring action of anaerobic zone agitating device 2, detest
1 hydraulic detention time of oxygen area is 1h, and DO value is 0.17mg/L；
3) the muddy water mixed solution gravity flow in anaerobic zone 1 enters in the anoxic zone 3 for being equipped with fixed type biological membrane carrier filler 5,
And it is mixed with 6 muddy water mixed solution of aerobic zone that mixed liquor reflux unit 11 is delivered in anoxic zone 3；
4) by the stirring action of anoxic zone agitating device 4, muddy water in anoxic zone 3 is kept to be sufficiently mixed, and with it is fixed
Biomembrane on biofilm carrier filler 5 comes into full contact with, and 3 hydraulic detention time of anoxic zone is 3h, and DO value is 0.4mg/L；
5) the muddy water mixed solution gravity flow in anoxic zone 3 enters the aerobic zone for being added with fixed metazoa carrier filler 8
6；
6) air quantity that air blower is controlled by aeration control device 7 carries out blast aeration to aerobic zone 6, makes in aerobic zone 6
Muddy water mixed solution is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler 8；It and is aerobic zone 6
Metazoa on microorganism, fixed metazoa carrier filler 8 in interior muddy water mixed solution etc. is provided needed for growth and breeding
The oxygen wanted, 6 hydraulic detention time of aerobic zone are 3h, and DO value is 2.5mg/L；
7) aluminium polychloride, dosage 6mg/L, muddy water after dosing are added by chemicals dosing plant 12 in 6 rear end of aerobic zone
It is 1m that mixed liquor gravity flow, which enters surface loading,3/(m2H) solid-liquid displacement zone 9；
8) through detecting, sludge interface judges that process system needs spoil disposal apart from water surface 1m in solid-liquid displacement zone 9；
9) total 6m is discharged by mud discharging device 1639 bottom precipitation sludge of solid-liquid displacement zone, remaining sludge passes through sludge
Reflux unit 13 flows back into anaerobic zone 1 and handles sewage, return sludge ratio 100% again；
10) it is computed, the excess sludge dry weight of this discharge is 72kg；The measuring and calculating of combination processing water, process system remain
Remaining sludge yield is 3.45 tons (wet mud of moisture content 80%)/ten thousand tons of water, (is contained compared to about 5 tons of conventional activated sludge method technique
The wet mud of water rate 80%)/ten thousand tons of water excess sludge production, mud decrement about 30%.
Sewage treatment result:
Influent quality is as shown in the table:
3 influent quality of table (unit: mg/L)
Effluent quality is as shown in the table:
4 effluent quality of table (unit: mg/L)
From table 3 and table 4: using a kind of pulling flow type coupling sewage-treatment plant of the utility model to Guangzhou dirt
The sewage of water treatment plant is handled, and effluent quality index can achieve " urban wastewater treatment firm pollutant emission standard " (sign
Seek opinion original text) " special emission limit " requirement；Meanwhile can reduce about 30% excess sludge discharge amount.
Embodiment 3:
Production the utility model a kind of pulling flow type coupling sewage-treatment plant (referring to Fig.1, treatment scale be about 120 tons/
It).
The processing of sanitary sewage is carried out using the sewage-treatment plant, comprising the following steps:
1) after the sewage of Guangzhou sewage treatment plant being removed rubbish and silt by grid, setting pot, recycle into
Sewage is delivered to the anaerobic zone 1 of reaction unit pipeline by water installations 10 in such a way that lower end is flooded into water；
2) keep water inlet in reaction unit anaerobic zone 1 and returnedactivatedsludge abundant using the stirring action of agitating device,
1 hydraulic detention time of anaerobic zone is 1h, and DO value is 0.16mg/L；
3) the muddy water mixed solution gravity flow in anaerobic zone 1 enters in the anoxic zone 3 for being equipped with fixed type biological membrane carrier filler 5,
And it is mixed with 6 muddy water mixed solution of aerobic zone that mixed liquor reflux unit 11 is delivered in anoxic zone 3；
4) by the stirring action of anoxic zone agitating device 4, muddy water in anoxic zone 3 is kept to be sufficiently mixed, and with it is fixed
Biomembrane on biofilm carrier filler 5 comes into full contact with, and 3 hydraulic detention time of anoxic zone is 3h, and DO value is 0.41mg/L；
5) the muddy water mixed solution gravity flow in anoxic zone 3 enters the aerobic zone for being added with fixed metazoa carrier filler 8
6；
6) air quantity that air blower is controlled by aeration control device 7 carries out blast aeration to aerobic zone 6, makes in aerobic zone 6
Muddy water mixed solution is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler 8；It and is aerobic zone 6
Metazoa on microorganism, fixed metazoa carrier filler 8 in interior muddy water mixed solution etc. is provided needed for growth and breeding
The oxygen wanted, 6 hydraulic detention time of aerobic zone are 3h, and DO value is 2.3mg/L；
7) aluminium polychloride, dosage 5mg/L, muddy water after dosing are added by chemicals dosing plant 12 in 6 rear end of aerobic zone
It is 1m that mixed liquor gravity flow, which enters surface loading,3/(m2H) solid-liquid displacement zone 9；
8) through detecting, sludge interface 2m below the water surface in solid-liquid displacement zone 9 judges that process system does not need spoil disposal；
9) sludge precipitated by solid-liquid displacement zone 9 is delivered to anaerobic zone 1 by sludge refluxing apparatus 13 and handles dirt again
Water, return sludge ratio 100%.
Sewage treatment result:
Influent quality is as shown in the table:
5 influent quality of table (unit: mg/L)
Effluent quality is as shown in the table:
6 effluent quality of table (unit: mg/L)
From table 5 and table 6: using a kind of pulling flow type coupling sewage-treatment plant of the utility model to Guangzhou dirt
The sewage of water treatment plant is handled, and effluent quality index can achieve " urban wastewater treatment firm pollutant emission standard " (sign
Seek opinion original text) " special emission limit " requirement.
The embodiments of the present invention is explained in detail above in conjunction with attached drawing, but the utility model is not limited to
State embodiment, within the scope of knowledge possessed by those of ordinary skill in the art, can also do not depart from it is practical
Various changes can be made under the premise of novel objective.
Claims (4)
1. a kind of pulling flow type couples sewage-treatment plant, including reaction unit, water feed apparatus, mixed liquor reflux unit, sludge return
Flow device, chemicals dosing plant, aeration control device and spoil disposal control device, it is characterised in that: the reaction unit includes successively phase
Anaerobic zone, anoxic zone, aerobic zone and the solid-liquid displacement zone of neighbour's setting, the water feed apparatus are connect by pipeline with anaerobic zone, institute
State chemicals dosing plant and connect with aerobic zone end by pipeline, the mixed liquor reflux unit by pipeline connection aerobic zone end with
Anoxic zone front end, the sludge refluxing apparatus connect solid-liquid displacement zone bottom and anaerobic zone front end by pipeline；The anaerobic zone
It is inside provided with agitating device, agitating device and fixed type biological membrane carrier filler, the aerobic zone are provided in the anoxic zone
It is inside provided with aerator and fixed metazoa carrier filler, the solid-liquid displacement zone bottom is provided with mud discharging device；Institute
It states fixed type biological membrane carrier filler and fixed metazoa carrier filler is each attached in reaction unit below liquid level, stirs
Region more than device or aerator.
2. pulling flow type according to claim 1 couples sewage-treatment plant, it is characterised in that: the fixed type biological film carries
The packing ratio of body filler and fixed metazoa carrier filler in reaction unit is 20%~70%.
3. pulling flow type according to claim 1 couples sewage-treatment plant, it is characterised in that: the aerator is by air blast
Machine, multiple aeration plates and with casing valve form.
4. pulling flow type according to claim 1 couples sewage-treatment plant, it is characterised in that: the mixed liquor reflux unit
It is made of with sludge refluxing apparatus pipeline and pipeline pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821407692.1U CN209161749U (en) | 2018-08-28 | 2018-08-28 | A kind of pulling flow type coupling sewage-treatment plant |
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|---|---|---|---|
| CN201821407692.1U CN209161749U (en) | 2018-08-28 | 2018-08-28 | A kind of pulling flow type coupling sewage-treatment plant |
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| CN209161749U true CN209161749U (en) | 2019-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179861A (en) * | 2018-08-28 | 2019-01-11 | 广州市市政工程设计研究总院有限公司 | A kind of pulling flow type coupling sewage-treatment plant and technique |
-
2018
- 2018-08-28 CN CN201821407692.1U patent/CN209161749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179861A (en) * | 2018-08-28 | 2019-01-11 | 广州市市政工程设计研究总院有限公司 | A kind of pulling flow type coupling sewage-treatment plant and technique |
| CN109179861B (en) * | 2018-08-28 | 2024-01-23 | 广州市市政工程设计研究总院有限公司 | Plug-flow type coupling sewage treatment device and process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |