CN104817235B - Town sewage treatment system and town sewage treatment method for high and cold regions - Google Patents
Town sewage treatment system and town sewage treatment method for high and cold regions Download PDFInfo
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- CN104817235B CN104817235B CN201510209676.6A CN201510209676A CN104817235B CN 104817235 B CN104817235 B CN 104817235B CN 201510209676 A CN201510209676 A CN 201510209676A CN 104817235 B CN104817235 B CN 104817235B
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Abstract
The invention discloses a town sewage treatment system and a town sewage treatment method for high and cold regions. The town sewage treatment system comprises a coarse screen pond, a fine screen pond, a rotational flow grit basin, an integrated AAO micro aeration oxidation ditch and secondary sedimentation tank, a middle water pond, an efficient sedimentation basin, a fiber turntable filtering chamber and a disinfecting tank. The town sewage treatment system and the town sewage treatment method have the advantages that technical problems of town sewage treatment in the high and cold desert regions can be improved effectively, town sewage can be treated effectively, sewage discharge can meet related national requirements, emergencies can be handled through emergency measures, high applicability is achieved, safe and efficient operation of town sewage treatment facilities in the high and cold regions is guaranteed and sustainable development is promoted.
Description
Technical field
The present invention relates to town sewage treatment technology, particularly a kind of extremely frigid zones town sewage treatment technology.
Background technology
China's extremely frigid zones include western the Northeast, the Northwest, North of North China and In North Area of Qinghai-xizang Plateau.Closely
Nian Lai, with being on the increase for extremely frigid zones town sewage discharge capacity, extremely frigid zones water pollution problems is become increasingly conspicuous, and sewage is entered
Row treatment, recycle it is imperative.
Because Cold Desert area is vast in territory, complicated various, the weather conditions significant difference of physical geographic environment, geological conditions
Changeable, geomorphic type is various, and water temperature in winter is too low, microbial metabolism is slower, and current extremely frigid zones urban wastewater treatment is mainly adopted
With activated sludge process, including oxidation ditch process, AB techniques, SBR techniques, AAO techniques, fibre turntable filter chamber and oxidation pond etc.
Technology, improves and forms micro- exposure oxidation ditch process and the micro- exposure oxidation ditch process of integrated A AO of AAO again on AAO techniques,
Especially the micro- oxidation ditches that expose of integrated A AO are surrounded and connected with second pond by an outer fissure, and AAO is micro- to expose oxidation ditch and second pond
Current and sludge carry out circulation circulation, can cause that denitrogenation dephosphorizing is completed in same building, efficiently and take up an area small.
Although prior art is more, still without properly for the ripe of China's extremely frigid zones urban wastewater treatment
Technology.Currently available technology, the micro- oxidation ditch process applicabilities that expose of the main biochemical process AAO of sewage disposal system are more narrow,
To the inefficiency of extremely frigid zones urban wastewater treatment, cannot ensure that stably reaching standard is discharged in the winter time.
The content of the invention
The purpose of the present invention is directed to the deficiency of prior art, for Cold Desert area town sewage treatment technology problem
Propose to improve, specifically designed for the technology developed in extremely frigid zones urban wastewater treatment, with low temperature strong applicability；Two sink simultaneously
Pond and oxidation ditch are built jointly and are integrated, and more save the area, and operation more efficiently, effective treatment is carried out to town sewage, is made
Sewage discharge meets the requirement of national correlation, and can tackle emergency case, and applicability is stronger.
A kind of extremely frigid zones sewage disposal system, including grid pond, setting pot, integrated A AO biochemistry pools and second pond, in
Between pond, efficient sedimentation tank and sterilization pool, each device is sequentially connected by water pipe, and each device uses water pump lifting when having difference in height
Sewage highly, wherein setting pot are rotational flow grit chambers, and impurity is departed from by being centrifuged, and grid are removed and centrifugation can effectively depart from solid and liquid
Body, protection rear equipment safety and guarantee decontamination efficiency.
Further, grid pond is divided into coarse rack pond, fine fack, mechanical coarse rack is installed in coarse rack pond, in sewage
Larger debris, such as branch, polybag are removed herein, and can play a part of to protect next stage equipment；Thin lattice
Rotary drum fine fack is installed, thinner debris are removed herein in sewage in grid pond.The grid in coarse rack pond and fine fack pond
Control can set and automatically control or control manually.
The grid slag that above-mentioned coarse rack pond and fine fack pond produce, can lead to sludge dewatering equipment, outward transport treatment after dehydration.
Above-mentioned AAO biochemistry pools are that integrated A AO is micro- exposes oxidation ditch and second pond, and dephosphorization denitrification effect is good and takes up an area small.
Further, above-mentioned setting pot is rotational flow grit chamber, and rotational flow grit chamber is provided with dump pipe and debris drain,
Debris can be sent to sludge dewatering equipment by debris drain, outward transport treatment after dehydration.
Above-mentioned to be provided with meter between the micro- exposure oxidation ditch of rotational flow grit chamber and integrated A AO, detection flows through sewage quantity.Eddy flow
Setting pot is provided with dump pipe, when sewage micro- with integrated A AO cannot expose oxidation ditch reaction or bear the upper limit more than it,
Dump pipe can be opened and release sewage otherwise processed.
The micro- oxidation ditches that expose of above-mentioned integrated A AO are made up of anaerobic pond, anoxic pond, Aerobic Pond and second pond.Anaerobic pond is pacified
Dress submersible agitator, mixes and prevents sludge settling to ensure that sewage and returned sludge are uniform.In anaerobic pond, sludge group is accumulated in
In phosphorus be released, but due to the rich phosphorus absorbing phenomenon under aerobic state, make the phosphorus for discharging will be good in oxidation ditch
Absorbed by sludge again in oxygen pond, so the purpose of removal phosphor in sewage, anoxic pond peace can be reached by excluding excess sludge
Dress submersible agitator, backflow sewage is uniformly mixed herein in anaerobic pond sewage out and Aerobic Pond, because mixed liquor is in
Anaerobic condition, makes to anti-nitration reaction to be achieved herein, and therefore the most of nitrogen in sewage be removed, and Aerobic Pond is in order to carry
Utilization rate of equipment and installations high, and oxygen utilization rate, reach reducing energy consumption, reduce take up an area and capital expenditure purpose, using micropore
The mode of aeration.Air is provided by air blower.In order to prevent sludge settling, submersible agitator is installed.Oxidation ditch water outlet is entered into
Second pond, acts on by the removal of sedimentation basin.
The micro- low temperature resistant engineering bacterias for exposing oxidation pond input through taming of above-mentioned integrated A AO, can be in 0 DEG C -15 DEG C of environment
Normal growth, breed and be metabolized, with preferable catalysis activity and biological degradability, it is ensured that have organic matter removal higher
Rate, ensures that sewage disposal system still can effectively carry out biochemical reaction decontamination at low temperatures.
Above-mentioned integrated A AO is micro- to expose oxidation ditch connection sludge-tank, and the sludge of sludge-tank is by outer after sludge dewatering equipment dehydration
Fortune treatment, the micro- exposure oxidation ditches of sewage injection integrated A AO and second pond of disengaging react again.
Above-mentioned efficient sedimentation tank addition flocculation coagulant, waste water will be filled with medicament in the presence of the physical mixed of water
The mixing mixing for dividing, is effectively precipitated.
Be provided with fibre turntable filter chamber in the middle of above-mentioned efficient sedimentation tank and sterilization pool, fibre turntable filter chamber to suspension in water,
The granule foreigns such as larger molecular organicses, virus, bacterium, colloid, iron have the effect such as absorption well, retention, fixed, and clearance can
Up to more than 95%.Sewage enters disinfecting tank by the water outlet of fibre turntable filter chamber, carries out disinfection, last qualified discharge.
A kind of sewage water treatment method of use extremely frigid zones town sewage system, comprises the steps of：
S1. physical treatment stage：Sewage imports coarse rack pond by water inlet pipe, after removing the suspended material of bulky grain
Fine fack pond is lifted into through sewage pump, entered rotary drum fine fack filter small particles material, then sewage is injected with tangential direction
Rotational flow grit chamber, rotational flow grit chamber produces waterpower whirlpool by mechanical agitation, departs from again under rotational flow grit chamber rotating centrifugal
Solid and sewage, the stage produce debris to be transported to refuse landfill otherwise processed；
S2. biochemical treatment stage：Spin current setting pot sewage out enters the integrated A micro- exposure oxygen of AO through flowmeter metering
Change ditch, the micro- oxidation ditches that expose of integrated A AO are made up of anaerobic pond, anoxic pond, Aerobic Pond and second pond, and anaerobic pond is installed diving and stirred
Device is mixed, is mixed and is prevented sludge settling to ensure that sewage and returned sludge are uniform, in anaerobic pond, accumulate in the phosphorus quilt in sludge group
Discharge, but due to the rich phosphorus absorbing phenomenon under aerobic state, the phosphorus for discharging will be weighed in oxidation ditch Aerobic Pond
Newly absorbed by sludge, so the purpose of removal phosphor in sewage can be reached by excluding excess sludge,
Anoxic pond installs submersible agitator, and backflow sewage is uniformly mixed herein in anaerobic pond sewage out and Aerobic Pond
Close, because mixed liquor is in anaerobic condition, make to anti-nitration reaction to be achieved herein, therefore the most of nitrogen in sewage gone
Remove,
By the way of micro-pore aeration, air is provided Aerobic Pond by air blower, in order to prevent sludge settling, is installed diving and is stirred
Mix device；
S3. advanced treating stage：The water outlet of biochemical treatment stage enters intermediate pool, and the water pump of the sewage in pond is pumped into efficient
Sedimentation basin, and flocculation coagulant is added, waste water will be mixed sufficiently with flocculation coagulant in the presence of the physical mixed of water
Precipitation is closed, sewage enters fibre turntable filter chamber after carrying out effectively precipitation, to suspension in water, larger molecular organicses, virus, thin
Bacterium, colloid, iron particle impurity are adsorbed, retained, being fixed, and water outlet enters sterilization pool, carries out disinfection, last sewage row up to standard
Put.
Above technical scheme has following some advantage：
1. grid pond and rotational flow grit chamber effectively depart from the solid particle in liquid, and protection rear equipment safety and guarantee are removed
Dirty efficiency.
2. safe emergency measure is provided with, following device safety is ensured when water pollution cannot seriously be decontaminated and is avoided
Sewage is below standard just to be discharged.
3. cryogenic engineering bacterium is used, and low temperature strong applicability is adapted to extremely frigid zones.
4. oxidation ditch is unified with second pond, saves the area, and runs more efficient.
Brief description of the drawings
Fig. 1 show fundamental diagram of the present invention.
Specific embodiment
With reference now to Description of Drawings embodiments of the invention, a kind of extremely frigid zones sewage disposal system, including grid pond 1,
Rotation setting pot 2, integrated A AO are micro- to expose oxidation ditch and second pond 3, intermediate pool 4, efficient sedimentation tank 5, fibre turntable filter chamber 6
With sterilization pool 7, each device is sequentially connected by water pipe, and each device uses water pump lifting sewage when having difference in height.Sewage is through grid pond 1
Filtering flows into rotational flow grit chamber 3 along tangential direction, in the case where mechanical agitation produces waterpower vortex, separate silt particle and organic matter with
Reach desanding；
Then the micro- oxidation ditches and second pond of exposing of sewage injection integrated A AO carries out Biochemical treatment for removing pollutant, 8 pairs of integrations of air blower
The micro- Aerobic Ponds for exposing oxidation ditch 3 of AAO provide air and produce micro- exposure oxygen effect, in the micro- exposure oxidation ditches of integrated A AO and second pond 3
Producing the sludge-tank 9 that is connected to side of mud discharging, and be sent to sludge dewatering equipment 10 carries out dewater treatment；
Then sewage injection intermediate pool 4, efficient sedimentation tank 5 is pumped into by water pump, is precipitated, water outlet feeding fibre turntable
Filter to suspension, larger molecular organicses, virus, bacterium, colloid, iron particle impurity in water, water outlet feeding sterilization pool 7 in filter tank 6
Disinfection reactions, final qualified discharge.
In a kind of embodiment, 1 point of grid pond is coarse rack pond and fine fack pond, and mechanical coarse rack is installed in coarse rack pond；
Rotary drum fine fack is installed, sewage imports coarse rack pond 1 by water inlet pipe in fine fack pond, by the suspended material for removing bulky grain
Fine fack pond 2 is pumped into by water pump, is flowed into then along tangential direction after the secondary interception of rotary drum fine fack in fine fack pond 2 and revolved
Stream setting pot 3.
In a kind of embodiment, the grid of grid pond 1 can automatically control and switch control manually.
In a kind of embodiment, the micro- exposure oxygen of integrated A AO is entered after being measured through meter from the sewage out of rotational flow grit chamber 2
Change ditch and second pond 3.
In a kind of embodiment, rotational flow grit chamber 2 is provided with dump pipe and debris drain.
Above-mentioned meter detection flows are exceeded or when influent quality is badly unsuitable for entering the micro- exposure oxidation ditches of integrated A AO
When 3, dump pipe is opened, sewage can directly exclude treatment in addition by the dump pipe of rotational flow grit chamber 2.
In a kind of embodiment, flocculation coagulant is added in efficient sedimentation tank 5.
Meanwhile, the present invention discloses a kind of sewage water treatment method of use extremely frigid zones town sewage system, comprising following step
Suddenly：
S1. physical treatment stage：Sewage imports coarse rack pond by water inlet pipe, is then lifted into fine fack through sewage pump
Pond, then sewage injects rotational flow grit chamber 2 with tangential direction, and rotational flow grit chamber 2 produces waterpower whirlpool by mechanical agitation,
Decontaminated under the rotating centrifugal of rotational flow grit chamber 2, the stage produces debris to be transported to refuse landfill otherwise processed；
S2. biochemical treatment stage：The sewage out of spin current setting pot 2 enters the integrated A micro- exposures of AO through flowmeter metering
Oxidation ditch and second pond 3, the micro- oxidation ditches that expose of integrated A AO are made up of anaerobic pond, anoxic pond, Aerobic Pond and second pond, anaerobism
Submersible agitator is installed in pond, and the purpose of removal phosphor in sewage can be reached by excluding excess sludge in anaerobic pond,
Anoxic pond installs submersible agitator, and backflow sewage is uniformly mixed herein in anaerobic pond sewage out and Aerobic Pond
Close, the most of nitrogen in removal sewage,
By the way of micro-pore aeration, air is provided Aerobic Pond by air blower, in order to prevent sludge settling, is installed diving and is stirred
Mix device；
S3. advanced treating stage：The water outlet of biochemical treatment stage enters intermediate pool 4, and the water pump of the sewage in pond is pumped into high
Effect sedimentation basin 5, and flocculation coagulant is added, waste water will be obtained sufficiently with flocculation coagulant in the presence of the physical mixed of water
Mixed precipitation, sewage enters fibre turntable filter chamber 6 after carrying out effectively precipitation, and water outlet enters sterilization pool 7, carries out disinfection, last dirty
Water qualified discharge.
Above disclosed is only the preferred embodiments of the present invention, can not limit the right of the present invention with this certainly
Scope, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (7)
1. a kind of extremely frigid zones town sewage treatment system, comprising grid pond, setting pot, AAO biochemistry pools and second pond, centre
Pond, efficient sedimentation tank and sterilization pool, each device are sequentially connected by water pipe, use water pump lifting sewage high when having difference in height
Degree, it is characterised in that the setting pot is rotational flow grit chamber, the grid of the grid pond is provided with and automatically controls and switch manually
Controller, the AAO biochemistry pools and micro- exposure oxidation ditch and the second ponds of the integrated AAO of second pond, in the micro- exposures of integrated A AO
The sludge-tank that is connected to side of mud discharging produced in oxidation ditch and second pond, and be sent to sludge dewatering equipment and be dehydrated
Treatment, is provided with fibre turntable filter chamber in the middle of the efficient sedimentation tank and sterilization pool, the grid pond includes coarse rack pond and thin lattice
Grid pond, fine fack pond uses rotary drum fine fack；The grid setting in coarse rack pond and fine fack pond is automatically controlled or controlled manually
System, sewage through grid pond filter along tangential direction flow into rotational flow grit chamber, mechanical agitation produce waterpower vortex under, make silt particle and
Organic matter separates to reach desanding.
2. extremely frigid zones town sewage treatment system according to claim 1, it is characterised in that the integrated A AO is micro-
Expose the low temperature resistant engineering bacteria of oxidation ditch and second pond input through taming.
3. extremely frigid zones town sewage treatment system according to claim 2, it is characterised in that in the efficient sedimentation tank plus
Enter the coagulant that flocculates.
4. extremely frigid zones town sewage treatment system according to claim 3, it is characterised in that the integrated A AO is micro-
Expose oxidation ditch and second pond connection sludge-tank, the sludge dewatering outward transport treatment of sludge-tank, the sewage injection integrated A AO of disengaging
Micro- exposure oxidation ditch and second pond react again.
5. extremely frigid zones town sewage treatment system according to claim 4, it is characterised in that logical in the fine fack pond
Flowmeter is installed on toward the micro- connecting water pipes for exposing oxidation ditch and second pond of integrated A AO.
6. extremely frigid zones town sewage treatment system according to claim 5, it is characterised in that the rotational flow grit chamber sets
There are accident delivery pipe and debris drain.
7. a kind of extremely frigid zones urban wastewater treatment method, it is characterised in that the sewage water treatment method is comprised the steps of：
S1. physical treatment stage：Sewage imports coarse rack pond by water inlet pipe, is then lifted into fine fack through sewage pump
Pond, each device uses water pump lifting sewage highly when having difference in height, and then sewage injects rotational flow grit chamber, eddy flow with tangential direction
Setting pot produces waterpower whirlpool by mechanical agitation, is decontaminated under rotational flow grit chamber rotating centrifugal, and the stage produces debris to be transported to
Refuse landfill otherwise processed；
S2. biochemical treatment stage：Spin current setting pot sewage out enters the integrated A micro- exposure oxygen of AO through flowmeter metering
Change ditch and second pond, wherein, the micro- oxidation ditches that expose of integrated A AO are made up of anaerobic pond, anoxic pond, Aerobic Pond and second pond,
The anaerobic pond, anoxic pond and Aerobic Pond are respectively mounted submersible agitator；
S3. advanced treating stage：The water outlet of biochemical treatment stage enters intermediate pool, and it is efficiently heavy that the water pump of the sewage in pond is pumped into
Shallow lake pond, and flocculation coagulant is added, waste water will sufficiently be mixed with flocculation coagulant in the presence of the physical mixed of water
Precipitation, sewage enters fibre turntable filter chamber after carrying out effectively precipitation, and water outlet enters sterilization pool, carries out disinfection, and last sewage is up to standard
Discharge.
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| CN108911438A (en) * | 2018-09-20 | 2018-11-30 | 华蓥市职业教育培训中心 | A kind of sewage disposal system |
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| CN106277634A (en) * | 2016-09-10 | 2017-01-04 | 安徽蓝鼎环保能源科技有限公司 | A kind of extremely frigid zones town sewage treatment technology |
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| CN100572302C (en) * | 2007-12-11 | 2009-12-23 | 江苏凌志环保有限公司 | The dephosphorization denitrogenation integrated A of ORBAL oxidation ditch-related type 2The O/ inversion A 2O technology |
| CN103204605B (en) * | 2013-05-22 | 2014-11-19 | 徐州工程学院 | Method for treating garlic processing waste water |
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| CN108911438A (en) * | 2018-09-20 | 2018-11-30 | 华蓥市职业教育培训中心 | A kind of sewage disposal system |
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Address after: 510630 Whampoa District, Guangdong, China (in the new knowledge of the city), Buddha, Jianshe Road, room 115, No. 2003, room nine Applicant after: CNHOMELAND ENVIRONMENTAL CO.,LTD. Address before: 510630 23-24 building, Huasheng Building, No. five, Tianhe District Road, Guangzhou, Guangdong, China Applicant before: CNHOMELAND ENVIRONMENTAL CO.,LTD. |
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