CN207210067U - A kind of sewage treatment unit to be flowed back using aerobic Two-way Cycle and nitrification liquid - Google Patents
A kind of sewage treatment unit to be flowed back using aerobic Two-way Cycle and nitrification liquid Download PDFInfo
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- CN207210067U CN207210067U CN201720668119.5U CN201720668119U CN207210067U CN 207210067 U CN207210067 U CN 207210067U CN 201720668119 U CN201720668119 U CN 201720668119U CN 207210067 U CN207210067 U CN 207210067U
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Abstract
The utility model belongs to technical field of sewage, discloses a kind of sewage treatment unit to be flowed back using aerobic Two-way Cycle and nitrification liquid, and the sewage treatment unit to be flowed back using aerobic Two-way Cycle and nitrification liquid is included：Four Aerobic Ponds, two anoxic ponds；Aerobic Pond centre position sets vertical baffle plate, the upper and lower UNICOM of Aerobic Pond；Aerator is set；Airlift pump passes through air inlet pipe and Aerobic Pond UNICOM by nitrification liquid return duct and anoxic pond UNICOM, air compressor machine.Sewage water treatment method energy consumption of the present utility model is low, can the quick biofilm on filler, realize the simultaneous removing of organic matter and ammonia nitrogen；COD after biofilm success, ammonia nitrogen and nitrogen removal rate are high and stably, and the operating load of reactor is high.After biomembrane culture success, COD clearances can stablize the stabilization under conditions of 90% or so, TN clearances are less than 100% in reflux ratio and more than 70%, solve the problems, such as that traditional AO techniques biological denitrificaion reflux ratio is big and nitric efficiency is not high.
Description
Technical field
The utility model belongs to technical field of sewage, more particularly to a kind of using aerobic Two-way Cycle and nitrification liquid backflow
Sewage treatment unit.
Background technology
At present, biological treatment is still the prevailing technology of organic sewage processing.Biological method for treating waste water mainly has at present
Activated sludge process and the major class of biomembrance process two.Activated sludge process possessed a variety of operation sides by the development innovation of more than 100 years
Formula and preferable wastewater treatment efficiency and the maturation process being widely recognized as everybody；Biomembrance process is to utilize to be attached on filler
A kind of technique for being purified to water body of biology, the development recently as filler material and processing technology also obtains rapidly
Research and application.It was verified that although activated sludge process is ripe, presence aeration pool volume is big, floor space is high, and to water
Matter, the adaptability of water change are relatively low, the shortcomings of operational effect susceptible.Biomembrance process is because its stability is good, has born
The ability of machine load and hydraulic loading shock is strong, the worry without sludge bulking, while high to the clearance of organic matter, the body of reactor
Accumulate the advantages that small, floor space is small and receive much concern.However, biomembrance process has very strong dependence, market to carrier material
On carrier material be either that price is high or be poor-performing, it is difficult to promote the extensive engineer applied of biomembrance process；In addition,
The biomembrane to be come off in running can influence effluent quality.For above-mentioned problem, industry develops one kind in recent years
With reference to the NEW TYPE OF COMPOSITE handling process of both traditional activated sludge process and biological contact oxidation process advantage, i.e. MBBR techniques.Its core
Heart technique is exactly that the floating stuffing of proportion close to water is added to as the carrier of active sludge microorganism in aeration tank, by exposure
The turbulent fluctuation of aeration and current in gas pond and be in fluidized state, form biomembrane when microorganism is attached on carrier, floating
Carrier moves freely in reactor with the turbulent fluctuation of mixed liquor, completes the material between microorganism and sewage in the process
And the oxidizing process of energy exchange processes, further completion pollutant, so as to reach the purpose of sewage disposal.But MBBR techniques
It is generally necessary to set out hydropexis filter screen, the facility retains biologic packing material while good design fluidised form in reactor is kept
In biological tank.The delay screen area can form carrier accumulation in running, gently then cause carrier to be distributed in reactor
Inequality, decline treatment effeciency, even can block filter screen when serious, cause reactor to be not normally functioning.
In summary, the problem of prior art is present be：MBBR techniques cause carrier skewness in reactor, influence
The treatment effect of reactor.
The content of the invention
The problem of existing for prior art, the utility model provide a kind of using aerobic Two-way Cycle and nitrification liquid air lift
The sewage treatment unit of backflow.
The utility model be achieved in that it is a kind of using aerobic Two-way Cycle and the sanitary sewage of nitrification liquid stripping reflux at
Device is managed, the sewage treatment unit using aerobic Two-way Cycle and nitrification liquid stripping reflux includes：
Four Aerobic Ponds, two anoxic ponds；
Aerobic Pond centre position sets vertical baffle plate, the upper and lower UNICOM of Aerobic Pond；Aeration dress is set in the lattice of Aerobic Pond first
Put；
Airlift pump passes through air inlet pipe and Aerobic Pond UNICOM by nitrification liquid return duct and anoxic pond UNICOM, air compressor machine.
Further, the airlift pump is by nitrification liquid return duct and the first anoxic pond UNICOM, air compressor machine by air inlet pipe with
First Aerobic Pond, the 3rd Aerobic Pond UNICOM.
Further, the first Aerobic Pond and the second Aerobic Pond are connected by isolation baffle plate, and the second Aerobic Pond, the 3rd Aerobic Pond lead to
Perforated plate connection is crossed, the 3rd Aerobic Pond, the 4th Aerobic Pond are connected by isolation baffle plate；
First anoxic pond is connected with the second anoxic pond by vertical baffle plate, and the second anoxic pond and the first Aerobic Pond pass through perforation
Plate connects.
Further, the 4th Aerobic Pond, precipitation transition pond are connected by perforated plate.
Further, 40~50% commercial mobile bed fillers formation packing layer is added by volume in anoxic pond；In Aerobic Pond
30~40% add the commercial mobile bed fillers formation packing layer of high-specific surface area by volume.
Further, set and connected by the perforated plate that aperture is 1cm between the Aerobic Pond of aerator, in each aeration
Pond sets one in centre position apart from bottom of pond 20cm, the isolation baffle plate away from normal work liquid level 10cm.
The advantages of the utility model and good effect are：First Aerobic Pond and the second Aerobic Pond be aerobic double circulation structure,
3rd Aerobic Pond and the 4th Aerobic Pond are aerobic double circulation structure, filler is completely in stream in the reactor by aeration respectively
Flower-shaped state, filler circulate in respective separate space, local accumulation and will not will not be lost in, solve traditional handicraft filler stream
Change the problem of difficulty, local accumulation and filler are easy to be lost in.Operating load, the denitrogenation effect of bioreactor for disposing polluted water can be improved
Rate and operation stability, it is a kind of method for being widely portable to efficient domestic sewage processing.In integrated sewage treating apparatus
It is middle that aerobic double circulation structure and nitrification liquid stripping reflux device are set, biologic packing material is added respectively in Aerobic Pond and anoxic pond, is led to
Cross biological agent while organics removal can simultaneous denitrification, for small towns or centralized residential district sanitary sewage disposal.
The method energy consumption of sewage disposal of the present utility model is low, can the quick biofilm on filler, realize organic matter and ammonia nitrogen
Simultaneous removing；COD after biofilm success, ammonia nitrogen and nitrogen removal rate are high and stably, and the operating load of reactor is high.Biomembrane
After cultivating successfully, COD clearances can stablize the stabilization under conditions of 90% or so, TN clearances are less than 100% in reflux ratio and exist
More than 70%, solve the problems, such as that traditional AO techniques biological denitrificaion reflux ratio is big and nitric efficiency is not high.
Brief description of the drawings
Fig. 1 is that the sanitary sewage disposal to be flowed back using aerobic Two-way Cycle and nitrification liquid that the utility model embodiment provides is filled
Put structural representation；
In figure：1st, the first anoxic pond；2nd, the second anoxic pond；3rd, the first Aerobic Pond；4th, the second Aerobic Pond；5th, the 3rd is aerobic
Pond；6th, the 4th Aerobic Pond；7th, transition pond is precipitated；8th, control room；9th, air compressor machine；10th, air inlet pipe；11st, nitrification liquid return duct；12、
Airlift pump.
Embodiment
For invention, features and effects of the present utility model can be further appreciated that, following examples are hereby enumerated, and coordinate
Accompanying drawing describes in detail as follows.
Structure of the present utility model is explained in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the sanitary sewage to be flowed back using aerobic Two-way Cycle and nitrification liquid that the utility model embodiment provides
Processing unit includes：First anoxic pond 1, the second anoxic pond 2, the first Aerobic Pond 3, the second Aerobic Pond 4, the 3rd Aerobic Pond the 5, the 4th
Aerobic Pond 6, precipitation transition pond 7, control room 8, air compressor machine 9, air inlet pipe 10, nitrification liquid return duct 11, airlift pump 12.
First anoxic pond 1 is connected with the second anoxic pond 2 by vertical baffle plate, and the second anoxic pond 2 and the first Aerobic Pond 3 pass through
Perforated plate is connected, and the first Aerobic Pond 3 is connected with the second Aerobic Pond 4 by isolation baffle plate, and the second Aerobic Pond 4, the 3rd Aerobic Pond 5 are logical
Perforated plate connection is crossed, the 3rd Aerobic Pond 5, the 4th Aerobic Pond 6 are connected by isolation baffle plate, the 4th Aerobic Pond 6, precipitation transition pond 7
Connected by perforated plate.
Air compressor machine 9 is installed, air compressor machine 9 passes through air inlet pipe and the first Aerobic Pond 3, the 3rd Aerobic Pond 5 in control room 8
Logical, airlift pump 12 passes through the UNICOM of 11 and first anoxic pond of nitrification liquid return duct 1.
In the utility model：
Aerobic double circulation structure and nitrification liquid reflux is set, biology is added respectively in Aerobic Pond and anoxic pond and fills out
Material, by biological agent while organics removal simultaneous denitrification.
Aerobic space is divided into two independent Aerobic Ponds, each Aerobic Pond centre position sets vertical baffle plate, will be aerobic
Pond is divided into upper and lower UNICOM, the two parts for the formed objects that current can circulate wherein, selects a portion to set aeration
Device, current are made to be circulated in independent pond by blast aeration.
In anoxic pond centre position, vertical baffle plate is set, by anoxic pond be divided into bottom UNICOM, formed objects two parts, lack
40~50% filler is added by volume in oxygen pond, filler is retained in the pond each initially added in operation, and sewage can
To enter another pond from a pond gravity flow.
It is being back to back in water treatment procedure, anoxic pond organic volumetric loading is 2.0~3.5kgCOD/m3﹒ d, waterpower are stopped
Stay 2.5~3.5h of time, preferably 3.0h.
30~40% high-specific surface area filler is added by volume in Aerobic Pond, filler exists with current in aeration process
Loopy moving in Aerobic Pond.
Required air is provided by air compressor machine, and air, ducted systems set adjustable gate that air capacity is adjusted.Air
Amount and inflow volume ratio press 5~8:1 preferably 6:1.
Aerobic Pond organic volumetric loading is 1.5~3.0kgCOD/m3﹒ d, 3.8~5.0h of hydraulic detention time, preferably
4.2h。
Filler is cultivated by 30~45d and is generating Dark grey biomembrane thereon in anoxic pond, and thickness is about 50~200 μm；
Filler is cultivated by 15~20d and is generating yellowish-brown biomembrane thereon in Aerobic Pond, and thickness is about 200~500 μm.
Precipitation transition pond 7 is set after circulated aeration tank 6, air lift pump installation is set in precipitation transition pond 7, nitrification liquid is carried
Rise be back to anoxic pond front end, it is synchronous with water inlet enter anoxic pond progress denitrification denitrogenation, mixed liquid recycle ratio press 50~
100%, preferably 80%.
Air needed for airlift pump is provided by air compressor machine by pipeline, and gas is provided with adjustable gate before entering airlift pump
Tolerance is adjusted.
Nitrification liquid lifting is back to anoxic pond front end into setting a mixing pit before anoxic pond, during mixing pit hydraulic retention
Between 5min, sewage self-flowing enters anoxic pond after mixing.
Operation principle of the present utility model：
Double circulation structure provided by the utility model, aerobic by biological treatment divide into two relatively independent length
Wide ratio is 2:1 aerobic aeration pond, connected by the perforated plate that aperture is 1cm between aeration tank, in each aeration tank in
Meta installs one apart from bottom of pond 20cm, the isolation baffle plate away from normal work liquid level 10cm, and aeration tank is divided into two pros
Shape region, a region, which is laid, wherein is aerated facility, adds high-specific surface area commercialization than 30~40% by aeration tank cumulative volume
Mobile bed fillers, interior circular flow mode can be formed in aerobic region by opening aeration.Set in anoxic pond centre position vertical
Baffle plate, baffle plate close to reaction tank bottom 20cm regions be aperture 1cm, percent opening 20% perforated plate, anoxic pond is divided into bottom
UNICOM, two parts of formed objects, 40~50% commercial mobile bed fillers are added by volume in anoxic pond.In aeration tank end
Transition pond is set, is connected, sunk by aperture 1cm, the percent opening 20% high perforated plates of 10cm between transition bottom of pond portion and aeration tank
Shallow lake sludge, which can directly flow automatically, returns to aeration zone.Air lift pump installation is set in transition pond, before nitrification liquid lifting is back into anoxic pond
End, the anoxic pond that enters synchronous with water inlet carry out denitrification denitrogenation, mixed liquid recycle ratio 80%.
Interior circulation MBBR sewage treatment process methods provided by the utility model, the specific method of operation is by sanitary sewage
Anoxic pond is pumped into, 40~50% high-specific surface area biologic packing material, anoxic pond organic volumetric loading are added by volume in anoxic pond
For 2.0~3.5kgCOD/m3﹒ d, sewage react 3.0h in anoxic pond；Sewage self-flowing after anoxic treatment enters Aerobic Pond,
30~40% the commercial mobile bed fillers of high-specific surface area are added by volume in Aerobic Pond, Aerobic Pond organic volumetric loading is 1.5
~3.0kgCOD/m3﹒ d, sewage aerated reaction 4.2h in Aerobic Pond；Sewage self-flowing after Aerobic Process for Treatment enters transition pond,
Sludge automatic back flow is to Aerobic Pond in transition pond, and nitrification liquid is back to anoxic pond in 50~100% ratios and taken off with improving system
Nitrogen efficiency.COD, ammonia nitrogen and total nitrogen can be obtained after the processing of this system and is all up GB18918-2002 one-levels A mark emission requests.
Application effect of the present utility model is explained in detail with reference to specific embodiment.
Embodiment 1
Design treatment ability is 10m3/ d integrated sewage treating apparatus, 0.5m is added in anoxic pond3Biologic packing material,
Aerobic Pond adds 0.5m3Biologic packing material, aeration quantity 60m3/ d, mixed liquid recycle ratio 100%, after continuously running 28 days, intaking
CODCrConcentration is water outlet COD under the conditions of 280mg/L, total nitrogen concentration 40mg/L, ammonia nitrogen concentration 32mg/LCrConcentration be 34mg/L,
Total nitrogen concentration 9.2mg/L, ammonia nitrogen concentration 3.6mg/L.
Embodiment 2
Design treatment ability is 50m3/ d integrated sewage treating apparatus, 3.0m is added in anoxic pond3Biologic packing material,
Aerobic Pond adds 3.5m3Biologic packing material, aeration quantity 300m3/ d, mixed liquid recycle ratio 80%, after continuously running 30 days, intaking
CODCrConcentration is water outlet COD under the conditions of 260mg/L, total nitrogen concentration 42mg/L, ammonia nitrogen concentration 30mg/LCrConcentration be 38mg/L,
Total nitrogen concentration 10.5mg/L, ammonia nitrogen concentration 2.9mg/L.
Embodiment 3
Design treatment ability is 100m3/ d integrated sewage treating apparatus, 6.0m is added in anoxic pond3Biologic packing material,
Aerobic Pond adds 7.0m3Biologic packing material, aeration quantity 600m3/ d, mixed liquid recycle ratio 100%, after continuously running 30 days, entering
Water CODCrConcentration is water outlet COD under the conditions of 260mg/L, total nitrogen concentration 45mg/L, ammonia nitrogen concentration 32mg/LCrConcentration is 36mg/
L, total nitrogen concentration 9.5mg/L, ammonia nitrogen concentration 2.8mg/L.
In the various embodiments described above, CODCr, total nitrogen and ammonia nitrogen use China Environmental Science Press《Water and effluent monitoring point
Analysis method》Fourth edition methods described determines.
Described above is only to preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, it is every according to the technical essence of the utility model to any simple modification made for any of the above embodiments, equivalent variations with
Modification, is belonged in the range of technical solutions of the utility model.
Claims (6)
1. a kind of sewage treatment unit to be flowed back using aerobic Two-way Cycle and nitrification liquid, it is characterised in that described to use
Oxygen Two-way Cycle and the sewage treatment unit of nitrification liquid backflow include：
Four Aerobic Ponds, two anoxic ponds；
Aerobic Pond centre position sets vertical baffle plate, the upper and lower UNICOM of Aerobic Pond；Aerator is set；
Airlift pump passes through air inlet pipe and Aerobic Pond UNICOM by nitrification liquid return duct and anoxic pond UNICOM, air compressor machine.
2. the sewage treatment unit to be flowed back as claimed in claim 1 using aerobic Two-way Cycle and nitrification liquid, its feature are existed
In, the airlift pump by nitrification liquid return duct and the first anoxic pond UNICOM, air compressor machine passes through air inlet pipe and the first Aerobic Pond, the
Three Aerobic Pond UNICOMs.
3. the sewage treatment unit to be flowed back as claimed in claim 1 using aerobic Two-way Cycle and nitrification liquid, its feature are existed
In the first Aerobic Pond and the second Aerobic Pond are connected by isolation baffle plate, and the second Aerobic Pond, the 3rd Aerobic Pond are connected by perforated plate
Connect, the 3rd Aerobic Pond, the 4th Aerobic Pond are connected by isolation baffle plate；
First anoxic pond is connected with the second anoxic pond by vertical baffle plate, and the second anoxic pond and the first Aerobic Pond are connected by perforated plate
Connect.
4. the sewage treatment unit to be flowed back as claimed in claim 3 using aerobic Two-way Cycle and nitrification liquid, its feature are existed
In the 4th Aerobic Pond, precipitation transition pond are connected by perforated plate.
5. the sewage treatment unit to be flowed back as claimed in claim 1 using aerobic Two-way Cycle and nitrification liquid, its feature are existed
In 40~50% adding commercial mobile bed fillers by volume in anoxic pond and form packing layer；In Aerobic Pond by volume 30~
40%, which adds the commercial mobile bed fillers of high-specific surface area, forms packing layer.
6. the sewage treatment unit to be flowed back as claimed in claim 1 using aerobic Two-way Cycle and nitrification liquid, its feature are existed
In setting and connected by the perforated plate that aperture is 1cm between the Aerobic Pond of aerator, in each aeration tank in centre position
One is set apart from bottom of pond 20cm, the isolation baffle plate away from normal work liquid level 10cm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107032496A (en) * | 2017-06-09 | 2017-08-11 | 四川大学 | A kind of sewage treatment unit flowed back using aerobic Two-way Cycle and nitrification liquid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107032496A (en) * | 2017-06-09 | 2017-08-11 | 四川大学 | A kind of sewage treatment unit flowed back using aerobic Two-way Cycle and nitrification liquid |
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