CN108467162A - Rural domestic sewage treating device - Google Patents
Rural domestic sewage treating device Download PDFInfo
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- CN108467162A CN108467162A CN201810563763.5A CN201810563763A CN108467162A CN 108467162 A CN108467162 A CN 108467162A CN 201810563763 A CN201810563763 A CN 201810563763A CN 108467162 A CN108467162 A CN 108467162A
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- sewage
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- membrane cisterna
- sedimentation basin
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2813—Anaerobic digestion processes using anaerobic contact processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to technical field of sewage, and in particular to rural domestic sewage treating device, including：Activated sludge tank, sedimentation basin, biological membrane cisterna and sterilization pool；The first mud return line is connected between sedimentation basin and activated sludge tank, and sludge reflux pump is set on the first mud return line；Membrane module is set in biological membrane cisterna, and membrane module is connect with the outlet pipe of biological membrane cisterna, and film suction pump is arranged between membrane module and the outlet pipe of biological membrane cisterna；Shaker machine is arranged in sterilization pool centre position, and compound pump is arranged in the water inlet of sterilization pool.Rural domestic sewage treating device provided by the invention, sewage flows into activated sludge tank, the organic matter in sewage is removed by the microorganism in activated sludge tank, sedimentation basin is by the sludge settling in sewage, oettIed sewage is by membrane module to the further filtration treatment of sewage, biomembrane treated water is delivered to sterilization pool carries out disinfection processing, enables country sewage to focus on, reduces the pollution to rural area water body and soil.
Description
Technical field
The present invention relates to technical field of sewage, and in particular to rural domestic sewage treating device.
Background technology
Domestic sewage in rural areas occurs mainly with fertilizer and pesticide sewage, aquaculture wastewater, human and animal excreta and kitchen waste water etc..With
The broad development of Agricultural Activities, environmental pollution caused by domestic sewage in rural areas is increasingly severe, so will be in time to rural area
Sanitary sewage is handled.
The improvement of domestic sewage in rural areas is conducive to improve Ecological Environment, and power-assisted is in the development of rural economy.But agriculture
Village's sanitary sewage is since the approach in source is diversified, including rural resident, rural area folklore tour, rural area livestock and poultry breeding industry, rural area
Culture fishery, rural area periphery hotel and suburb enterprise and institution management unit etc. are generated with water and domestic sewage in rural areas
The complexity of middle pollutant is various, including the polluters such as total nitrogen, total phosphorus, COD, BOD.
Rural areas in our country development in the prior art falls behind relatively, and technical conditions are limited, and most of sewage is directly arranged
Enter lake river or carry out soil infiltrating irrigation, causes the large-scale pollution of rural area water body and soil, seriously threaten agriculture
Village's living environment.
Invention content
The technical problem to be solved in the present invention be to overcome in the prior art sewage be directly discharged into lake river or progress
Soil infiltrating irrigation causes the large-scale pollution of rural area water body and soil, seriously threatens life in the countryside environmental gap.
For this purpose, the technical solution used, rural domestic sewage treating device, including：Pass through pipeline successively sequential series
Activated sludge tank, sedimentation basin, biological membrane cisterna and sterilization pool；
Filter screen is set on the pipeline that sedimentation basin is connect with biological membrane cisterna, and the bottom of sedimentation basin is equipped with and activated sludge bottom of pond
Sludge reflux pump is arranged close to one end of sedimentation basin in the first connected mud return line of portion, the first mud return line；
Membrane module is set in biological membrane cisterna, and the outlet pipe of membrane module and biological membrane cisterna passes through piping connection, membrane module and life
Film suction pump is set between the outlet pipe of object membrane cisterna；
Shaker machine is arranged in sterilization pool centre position, and compound pump is arranged in the water inlet of sterilization pool.
In order to keep wastewater treatment efficiency more preferable, dirt Organic substance in water in anaerobic pond beginning is dropped with microorganism in sludge
Solution, preferred technical solution is, activated sludge tank is connected to the water inlet of sedimentation basin, the activated sludge tank by anaerobic pond, lack
Sequential series unicom forms successively for oxygen pond and aerobic tank, and the first mud return line is connected to anaerobic pond bottom.
In order to keep effluent cycle path longer, wastewater treatment efficiency is more preferable, and preferred technical solution is anaerobic pond, anoxic
In pond, aerobic tank, the inlet and outlet that upper end, the lower end in each pond shift to install, after the water outlet in previous pond is
The water inlet in one pond；The inlet and outlet of sedimentation basin are arranged at upper end.
In order to make organic pollutant removal in sewage more thoroughly, preferred technical solution is to be filled in anaerobic pond
Anaerobic activated sludge is filled with hypoxia activity sludge in anoxic pond, aerobic activated sludge is filled in aerobic tank.
In order to make the reflux of organic matter containing nitre in activated sludge tank sewage handle sewage Microbial denitrogenation, preferred technical side
Case is that nitrification liquid return duct is installed between anaerobic pond and aerobic tank top, and reflux pump is arranged on nitrification liquid return duct.
In order to keep wastewater treatment efficiency more preferable, dirt Organic substance in water in anaerobic pond beginning is dropped with microorganism in sludge
Solution, preferred technical solution is that the second mud return line and sludge reflux pump are equipped between biological membrane cisterna and anaerobic pond bottom.
In order to make biological membrane cisterna activated sludge in oxygen pond of becoming reconciled be come into full contact with sewage, preferred technical solution is biology
The interior bottom of membrane cisterna is equipped with the first aeration head and the first aeration branch pipe, and the interior bottom of aerobic tank is equipped with the second aeration head and
Two aeration branch pipes, aerobic tank and the outer tip end of biological membrane cisterna are connected to by being aerated supervisor, and aeration pump is arranged on aeration supervisor.
Treatment method for rural sewage：
A) sewage is filtered by the water inlet of activated sludge tank；
B) the filtered sewage of activated sludge tank enters sedimentation basin, and sewage passes through gravity precipitation solid particulate matter；
C) sewage after sedimentation tank filter enters biological membrane cisterna, and sewage is by the membrane module filtering in biological membrane cisterna；
D the sewage for) passing through membrane module filtering is discharged under the water outlet suction function of biological membrane cisterna at sterilization pool disinfection
Reason.
Sewage is entered by the water inlet of anaerobic pond, and sewage passes through the anaerobic activated sludge filtering in anaerobic pond；
The sewage of prefiltration enters anoxic pond in anaerobic pond, and sewage passes through the hypoxia activity sludge filtration in anoxic pond；
The sewage filtered in anoxic pond enters aerobic tank, and sewage passes through the aerobic activated sludge filtering in aerobic tank.
E) sewage passes through aeration pump aeration to outside in the become reconciled gas of oxygen pond generation of biological membrane cisterna；
F) nitrification liquid on aerobic tank top flows back into anaerobic pond by nitrification liquid return duct；
G) sludge of sedimentation basin bottom flows back into anaerobic pond bottom by the first mud return line；
H) sludge in biomembrane bottom of pond portion flows back into anaerobic pond bottom by the second mud return line.
Technical solution of the present invention has the following advantages that：
Rural domestic sewage treating device provided by the invention, sewage flows into activated sludge tank, by activated sludge tank
Microorganism removal sewage in deliquescent and colloidal state biochemical organic matter and can be by the suspension of activated sludge absorption
Solid and some other substance, while a part of phosphorus element and nitrogen can be also removed, sedimentation basin precipitates the sludge settling in sewage
Sewage afterwards by membrane module to the further filtration treatment of sewage, biomembrane treated water is delivered to sterilization pool carries out disinfection place
Reason, enables country sewage to focus on, and reduces the pollution to rural area water body and soil.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the system framework figure of the present invention；
Fig. 3 is another structural schematic diagram of biological membrane cisterna in the present invention；
Fig. 4 is the further structural schematic diagram of biological membrane cisterna in the present invention；
Wherein, 1- activated sludge tanks；1.1- anaerobic pond；1.2- anoxic pond；1.3- aerobic tank；1.3.1- the first aeration head；
1.3.2- the first aeration branch pipe；1.3.3- nitrification liquid return duct；1.3.4- reflux pump；2- sedimentation basins；2.1- filter screen；2.2- the
One mud return line；2.3- sludge reflux pump；3- biology membrane cisternas；3.1- membrane module；3.2- film suction pumps；The second sludge of 3.3- returns
Flow tube；3.4- sludge reflux pump；The second aeration heads of 3.5-；Bis- aeration branch pipes of 3.6-；3.7- aeration supervisors；3.8- aeration pump；
3.9- water pump；4- sterilization pools；4.1- shaker machine；4.2- compound pump；The first blenders of 5-；The second blenders of 6-；7- heating rods；8-
Brush.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, 2, the present invention provides rural domestic sewage treating devices, including：It is sequentially gone here and there successively by pipeline
Activated sludge tank 1, sedimentation basin 2, biological membrane cisterna 3 and the sterilization pool 4 of connection；It is arranged on the pipeline that sedimentation basin 2 is connect with biological membrane cisterna 3
Filter screen 2.1, the bottom of sedimentation basin 2 are equipped with the first mud return line 2.2 being connected with 1 bottom of activated sludge tank, the first sludge
Sludge reflux pump 2.3 is arranged close to one end of sedimentation basin 2 in return duct 2.2；Membrane module 3.1, membrane module are set in biological membrane cisterna 3
3.1 formed principle be：The sewage of nutriment and microbe inoculation filler surface flow, after a certain period of time, microorganism
Filler surface can be attached to and be proliferated and grow, form one layer of thin biomembrane.The outlet pipe of membrane module 3.1 and biological membrane cisterna 3
By piping connection, setting film suction pump 3.2 between membrane module 3.1 and the outlet pipe of biological membrane cisterna 3, film suction pump 3.2 is true
Sky pump；Shaker machine 4.1 is arranged in 4 centre position of sterilization pool, and compound pump 4.2 is arranged in the water inlet of sterilization pool 4.
The operation principle of the present invention is that：
Rural domestic sewage treating device provided by the invention, sewage flow into activated sludge tank 1, and activated sludge tank 1 is through one
The sludge-like flocculate formed after fixing time because aerobic microorganism is bred, inhabites the microorganism based on zoogloea thereon
Group, has the ability of very strong absorption and oxidation of organic compounds, and dissolubility in sewage is removed by the microorganism in activated sludge tank 1
And colloidal state biochemical organic matter and can by the suspended solid of activated sludge absorption and some other substance, while
A part of phosphorus element and nitrogen can be removed, for sedimentation basin 2 by the sludge settling in sewage, oettIed sewage is right by membrane module 3.1
The upper portion side wall of the further filtration treatment of sewage, sedimentation basin 2 is equipped with water outlet and filter screen 2.1, prevents sludge from flowing into biomembrane
Pond 3, the bottom of sedimentation basin 2 are equipped with the first mud return line 2.2 being connected with 1 bottom of activated sludge tank, and returned sludge is by activity
The sludge reflux pump 2.3 of 1 bottom of sludge-tank is sent to activated sludge tank 1, and clear water is exported by sedimentation basin 2 flows into biomembrane pond 3, biology
Water after film process is delivered to sterilization pool and carries out disinfection processing, and country sewage is enable to focus on, and reduces to rural area water
The pollution of body and soil；It is negative pressure in biological membrane cisterna 3 under the swabbing action of film suction pump 3.2, the membrane module in biological membrane cisterna 3
3.1 using the small microfiltration membranes in the high aperture of rejection effect, by the tiny particles content in the isolation technics filter sewage of film, significantly
Mud-water separation efficiency is improved, microorganism can be completely trapped in biological membrane cisterna 3, can make to remain higher in biological membrane cisterna 3
Biomass, the membrane module 3.1 being arranged in biological membrane cisterna 3 is filtered processing to sewage；The membrane module is immersed in biomembrane
Under the liquid level in pond 3, film suction pump 3.2 is connected with membrane module 3.1；3 body of biological membrane cisterna is connected to sterilization pool 4, by biological membrane cisterna 3
The water of processing is delivered to sterilization pool；Disinfectant is transported in water inlet in sterilization pool 4 by compound pump 4.2, among sterilization pool 4
Position is provided with shaker machine 4.1, and shaker machine 4.1 is blender, can be rapidly uniformly dissolved drug.
In order to keep wastewater treatment efficiency more preferable, dirt Organic substance in water in anaerobic pond beginning is dropped with microorganism in sludge
Solution, preferred technical solution is that activated sludge tank 1 is connected to the water inlet of sedimentation basin 2, and the activated sludge tank 1 is by anaerobic pond
1.1, sequential series unicom forms successively for anoxic pond 1.2 and aerobic tank 1.3, and the first mud return line 2.2 is connected to anaerobic pond 1.1
Mixed liquor from aerobic tank 1.3 is precipitated separation by bottom, sedimentation basin 2 under the effect of gravity, and supernatant flows into life as water outlet
The sludge of object membrane cisterna 3, precipitation flows into anaerobic pond 1.1 from the first mud return line 2.2.
In order to keep effluent cycle path longer, wastewater treatment efficiency is more preferable, and preferred technical solution is that anaerobic pond 1.1 lacks
In oxygen pond 1.2, aerobic tank 1.3, the inlet and outlet that upper end, the lower end in each pond shift to install, previous pond goes out
The mouth of a river is the water inlet in the latter pond；The inlet and outlet of sedimentation basin 2 are arranged at upper end, the water inlet of activated sludge tank 1
Mouth is mounted on the left end lower part of anaerobic pond 1.1, anaerobic pond 1.1 and 1.2 top unicom of anoxic pond, anoxic pond 1.2 and aerobic tank 1.3
Bottom unicom, the water outlet of activated sludge tank 1 are mounted on the right end top of aerobic tank 1.3, anoxic pond 1.2, sedimentation basin 2, biology
The water inlet of membrane cisterna 3 pushes up 1-1.5m from pond, the anaerobic pond 1.1, aerobic tank 1.3, the water inlet of sterilization pool 4 and sterilization pool 4
Water outlet is from bottom of pond 1-2m；The appearance of anaerobic pond 1.1, anoxic pond 1.2, aerobic tank 1.3, sedimentation basin 2, biological membrane cisterna 3, sterilization pool 4
Product is than being 1:1:1:1:1:1.
In order to make organic pollutant removal in sewage more thoroughly, preferred technical solution is to be loaded in anaerobic pond 1.1
There is anaerobic activated sludge, hypoxia activity sludge is filled in anoxic pond 1.2, aerobic activated sludge is filled in aerobic tank 1.3；Detest
Take lower water inlet upper water-out form in oxygen pond 1.1, it is ensured that the solid matter in anaerobic pond 1.1 is not brought into next technique ring
Section；Anoxic pond 1.2 takes enterprising underwater water outlet form, it is ensured that sewage comes into full contact with hypoxia activity sludge, to sewage
Carry out denitrification denitrogenation processing；Aerobic tank 1.3 takes lower water inlet upper water-out form, it is ensured that sewage and aerobic activated sludge
It comes into full contact with, nitrification processing is carried out to sewage, filling is flowed into after the anaerobic bacteria in anaerobic activated sludge releases sewage phosphorus processing
The anoxic pond for having hypoxia activity sludge flows into filling after the anoxic bacteria in hypoxia activity sludge is to sewage denitrification denitrogenation processing
There is the aerobic tank of aerobic activated sludge to nitrify.
In order to make the reflux of organic matter containing nitre in 1 sewage of activated sludge tank handle sewage Microbial denitrogenation, preferred technology
Scheme is that nitrification liquid return duct 1.3.3 is installed between 1.3 top of anaerobic pond 1.1 and aerobic tank, on nitrification liquid return duct 1.3.3
Reflux pump 1.3.4 is set；1.3 water part of aerobic tank enters in sedimentation basin 2, and sedimentation basin 2, part are drained into the form of excess sludge
Sludge is back to anaerobic pond 1.1 in the form of sludge nitrification liquid, to nitrify denitrogenation, reduces the wasting of resources.
In order to keep wastewater treatment efficiency more preferable, dirt Organic substance in water in anaerobic pond beginning is dropped with microorganism in sludge
Solution, preferred technical solution is that biological membrane cisterna 3 and anaerobic pond are equipped with the second mud return line 3.3 and sludge between 1.1 bottom
Reflux pump 3.4；Second sludge return pipe, 3.3 other end is connected to biological membrane cisterna 3, and returned sludge is pumped by sludge reflux to detesting
1.1 beginning of oxygen pond, to the degradation of dirty Organic substance in water, anoxic pond 1.2 flows into liquid and the activity of sedimentation basin 2, biological membrane cisterna 3
Sludge reflux volume ratio is 1：(50%-100%), to denitrogenation processing.
In order to make activated sludge in biological membrane cisterna 3 and aerobic tank 1.3 be come into full contact with sewage, preferred technical solution is,
The interior bottom of biological membrane cisterna 3 is equipped with the first aeration head 1.3.1 and the first aeration branch pipe 1.3.2, the interior bottom peace of aerobic tank 1.3
Equipped with the second aeration head 3.5 and the second aeration branch pipe 3.6, the second aeration head 3.5 makes the activated sludge in biological membrane cisterna 3 uniformly divide
Cloth, the second sludge return pipe 3.3 take extra activated sludge to anaerobic pond 1.1 away, to reach benign cycle, aerobic tank
1.3 are connected to the outer tip end of biological membrane cisterna 3 by being aerated supervisor 3.7, aeration pump 3.8 are arranged on aeration supervisor 3.7, second exposes
3.5 to the first aeration head 1.3.1 of gas head is densely distributed, to realize high efficient aeration；When aerated conduit or aeration head break down,
It needs to overhaul after sewage extraction in aerobic tank 1.3 and biological membrane cisterna 3, there is that maintenance is difficult to ask in actual moving process
Topic.
Film suction pump 3.2, aeration pump 3.8 and sludge reflux pump 2.3 are electrically connected by conducting wire with photovoltaic storage battery respectively, light
Overhead accumulator is electrically connected by conducting wire with solar energy power generating plate.
Anaerobic pond 1.1, anoxic pond 1.2, aerobic tank 1.3, sedimentation basin 2, biological membrane cisterna 3 and 4 inner wall of sterilization pool are equipped with anti-corrosion
Layer, erosion resistant coating are epoxy resin composite material coating.
As shown in figure 3, water pump 3.9, the water inlet connection biology of water pump 3.9 is arranged in the water inlet inside biological membrane cisterna 3
Water inlet inside membrane cisterna 3, for the water outlet of water pump 3.9 towards 3 bottom of biological membrane cisterna, the second mud return line 3.3 is located at biology
3 bottom centre position of membrane cisterna.Water pump 3.9 gives the downward power of sewage, the second aeration head 3.5 to give the upward power of sewage, make biomembrane
3 inside of pond forms drainage flow cycle, and sewage is directly directed to membrane module 3.1 and is filtered processing by the second aeration head 3.5, extra
Activated sludge be discharged from the second mud return line 3.3, improve membrane module 3.1 to the speed of sewage water filtration, and then improve sewage
Processing speed.
As shown in figure 4, the water outlet of water pump 3.9 is connect with the part that aeration supervisor 3.7 stretches into biological membrane cisterna 3, membrane module
3.1 and second the first blender 5 is arranged between aeration head 3.5, and the second blender 6, the first blender is arranged in 3.1 top of membrane module
5 and 6 direction of rotation of the second blender on the contrary, the blade of the first blender 5 and the second blender 6 towards the direction of membrane module 3.1
On be respectively provided with heating rod 7, brush 8 is arranged towards 3.1 direction of membrane module in heating rod 7, and gap is arranged with membrane module 3.1 in brush 8, when
When biomembrane aging on membrane module 3.1 falls off, the biomembrane of aging is brushed off by brush 8, newborn biomembrane is made to start to give birth to
Long, the first blender 5 gives sewage upwards thrust, the second blender 6 to give sewage down thrust, keep membrane module 3.1 and sewage abundant
It contacts and fully reacts, while the gaseous products moment generated on membrane module 3.1 being made to be blown away, increase membrane module 3.1 and oxygen
The time of contact；Heating rod 7 makes about 3.1 temperature of membrane module reach the temperature of suitable biofilm development, to reduce sewage
Processing time.
Treatment method for rural sewage：
A) sewage is filtered by the water inlet of activated sludge tank 1；
B) 1 filtered sewage of activated sludge tank enters sedimentation basin 2, and sewage passes through gravity precipitation solid particulate matter；
C) 2 filtered sewage of sedimentation basin enters biological membrane cisterna 3, and sewage is by 3.1 mistake of membrane module in biological membrane cisterna 3
Filter；
D) sewage filtered by membrane module 3.1 is discharged to sterilization pool 4 under the water outlet suction function of biological membrane cisterna 3 and disappears
Poison processing.
Sewage is entered by the water inlet of anaerobic pond 1.1, and sewage passes through the anaerobic activated sludge filtering in anaerobic pond 1.1；
The sewage of prefiltration enters anoxic pond 1.2 in anaerobic pond 1.1, and it is dirty that sewage passes through the hypoxia activity in anoxic pond 1.2
Mud filters；
The sewage filtered in anoxic pond 1.2 enters aerobic tank 1.3, and sewage passes through the aerobic activated sludge in aerobic tank 1.3
Filtering.
E) gas that sewage is generated in biological membrane cisterna 3 and aerobic tank 1.3 passes through the aeration of aeration pump 3.8 to outside；
F) nitrification liquid on 1.3 top of aerobic tank flows back into anaerobic pond 1.1 by nitrification liquid return duct 1.3.3；
G) sludge of 2 bottom of sedimentation basin flows back into 1.1 bottom of anaerobic pond by the first mud return line 2.2；
H) sludge of 3 bottom of biological membrane cisterna flows back into 1.1 bottom of anaerobic pond by the second mud return line 3.3.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. rural domestic sewage treating device, which is characterized in that including：Pass through the activated sludge tank of pipeline successively sequential series
(1), sedimentation basin (2), biological membrane cisterna (3) and sterilization pool (4)；
The bottom of setting filter screen (2.1) on the pipeline that sedimentation basin (2) is connect with biological membrane cisterna (3), sedimentation basin (2) is equipped with and work
Property sludge-tank (1) bottom connected the first mud return line (2.2), the first mud return line (2.2) close to sedimentation basin (2) one
End setting sludge reflux pump (2.3)；
Setting membrane module (3.1) in biological membrane cisterna (3), membrane module (3.1) and the outlet pipe of biological membrane cisterna (3) are connected by pipeline
It connects, setting film suction pump (3.2) between membrane module (3.1) and the outlet pipe of biological membrane cisterna (3)；
Shaker machine (4.1), the water inlet setting compound pump (4.2) of sterilization pool (4) is arranged in sterilization pool (4) centre position.
2. rural domestic sewage treating device according to claim 1, which is characterized in that activated sludge tank (1) is connected to
The water inlet of sedimentation basin (2), the activated sludge tank (1) by anaerobic pond (1.1), anoxic pond (1.2) and aerobic tank (1.3) successively
Sequential series unicom forms, and the first mud return line (2.2) is connected to anaerobic pond (1.1) bottom.
3. rural domestic sewage treating device according to claim 2, which is characterized in that anaerobic pond (1.1), anoxic pond
(1.2), in aerobic tank (1.3), the inlet and outlet that upper end, the lower end in each pond shift to install, previous pond goes out
The mouth of a river is the water inlet in the latter pond；The inlet and outlet of sedimentation basin (2) are arranged at upper end.
4. rural domestic sewage treating device according to claim 2, which is characterized in that anaerobic pond is filled in (1.1)
Anaerobic activated sludge is filled with hypoxia activity sludge in anoxic pond (1.2), and aerobic tank is filled with aerobic activated sludge in (1.3).
5. rural domestic sewage treating device according to claim 2, which is characterized in that anaerobic pond (1.1) and aerobic tank
(1.3) nitrification liquid return duct (1.3.3) is installed between top, reflux pump (1.3.4) is set on nitrification liquid return duct (1.3.3).
6. rural domestic sewage treating device according to claim 4, which is characterized in that biological membrane cisterna (3) and anaerobic pond
(1.1) the second mud return line (3.3) and sludge reflux pump (3.4) are installed between bottom.
7. rural domestic sewage treating device according to claim 1, which is characterized in that the interior bottom of biological membrane cisterna (3)
First aeration head (1.3.1) and the first aeration branch pipe (1.3.2) are installed, the interior bottom of aerobic tank (1.3) is equipped with the second exposure
The outer tip end of gas head (3.5) and the second aeration branch pipe (3.6), aerobic tank (1.3) and biological membrane cisterna (3) is responsible for by being aerated
(3.7) it is connected to, setting aeration pump (3.8) on aeration supervisor (3.7).
8. treatment method for rural sewage, which is characterized in that
A) sewage is filtered by the water inlet of activated sludge tank (1)；
B) activated sludge tank (1) filtered sewage enters sedimentation basin (2), and sewage passes through gravity precipitation solid particulate matter；
C) sedimentation basin (2) filtered sewage enters biological membrane cisterna (3), and sewage is by the membrane module (3.1) in biological membrane cisterna (3)
Filtering；
D the sewage for) passing through membrane module (3.1) filtering is discharged to sterilization pool (4) under the water outlet suction function of biological membrane cisterna (3)
It disinfects.
9. treatment method for rural sewage according to claim 8, which is characterized in that
Sewage is entered by the water inlet of anaerobic pond (1.1), and sewage passes through the anaerobic activated sludge filtering in anaerobic pond (1.1)；
The sewage of prefiltration enters anoxic pond (1.2) in anaerobic pond (1.1), and sewage passes through the hypoxia activity in anoxic pond (1.2)
Sludge filtration；
The sewage filtered in anoxic pond (1.2) enters aerobic tank (1.3), and it is dirty that sewage passes through the aerobic activity in aerobic tank (1.3)
Mud filters.
10. treatment method for rural sewage according to claim 9, which is characterized in that
E) gas that sewage is generated in biological membrane cisterna (3) and aerobic tank (1.3) passes through aeration pump (3.8) aeration to outside；
F) nitrification liquid on aerobic tank (1.3) top flows back into anaerobic pond (1.1) by nitrification liquid return duct (1.3.3)；
G) sludge of sedimentation basin (2) bottom flows back into anaerobic pond (1.1) bottom by the first mud return line (2.2)；
H) sludge of biological membrane cisterna (3) bottom flows back into anaerobic pond (1.1) bottom by the second mud return line (3.3).
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| CN110352900A (en) * | 2019-06-28 | 2019-10-22 | 广西国宏智鸿环境科技发展有限公司 | A kind of aquatic ecological culturing system with interior cycle water processing function |
| CN111018259A (en) * | 2019-12-30 | 2020-04-17 | 常州大学 | Rural sewage treatment device and treatment process |
| CN111138038A (en) * | 2020-01-17 | 2020-05-12 | 生态环境部华南环境科学研究所 | Photovoltaic-driven rural domestic sewage integrated treatment system and treatment method |
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