CN209412031U - A kind of family sewage-treatment plant of strengthened denitrification - Google Patents
A kind of family sewage-treatment plant of strengthened denitrification Download PDFInfo
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Abstract
The utility model relates to a kind of family sewage-treatment plants of strengthened denitrification, including the area Hua Fen being sequentially communicated along water (flow) direction, anoxic zone, aerobic zone, the area Xiao Yang, settling zone and sterile zones, the area Hua Fen is provided with the water inlet flowed into for sanitary sewage, the water outlet that sterile zones are provided with for clear water outflow, the area Hua Fen, anoxic zone, aerobic zone, the area Xiao Yang, settling zone and sterile zones are integrated in same container, separating in container has multiple reactive tanks corresponding with each area, aerobic zone is equipped with the region that 3 aeration quantity reduce in gradient, high-intensitive aeration zone is followed successively by along water (flow) direction, middle intensity aeration area and low intensity aeration area, the aeration zone Xiao Yang Qu Weiwu, air-lift device is installed between settling zone and the area Hua Fen, the mud mixture of the reactive tank lower part of settling zone can be back to the water inlet one end in the area Hua Fen by air-lift device.Using the utility model, can strengthened denitrification performance, reduce sludge yield, promote effluent quality, and invest and operating cost is low.
Description
Technical field
The utility model belongs to technical field of sewage, and in particular to a kind of family of strengthened denitrification is filled with sewage treatment
It sets.
Background technique
With the integrated development of China's expanding economy and cities and towns, life in the countryside level is continuously improved, so that life is dirty
The yield of water increases, and increases very fast.Rural areas in our country is scarcely populated, and village population decentralization, such case directly results in
Domestic sewage in rural areas dispersion is difficult to collect, and the governing system of domestic sewage in rural areas is not perfect.The discharge of sewage and the big portion of collection
It point is directly discharged into rivers in the form of open channel or underdrain or is permeated the ground with rainwater, such collection mode causes rain dirt to be difficult to point
From.And villages and small towns sewage has the characteristics that the features such as displacement is small and scattered, variation water quality is bigger, and compared with city, villages and small towns
Difference in the conditions such as society, economic and technical should not use more mature municipal sewage work in the sewage treatment of villages and small towns
Skill, and some simple processes should be used, high treating effect, occupied area is small, and low energy consumption, and operational management is easy, and secondary pollution is few
Technology, that is, distributing countryside sewage treatment equipment.
The status of China villages and small towns sewage treatment is that traditional municipal sewage plant's second level life treatment process is small at present
Type is applied to villages and small towns decentralized type sewage and handles.The main active sludge A/O of villages and small towns decentralized type sewage processing and membrane bioreaction
Answer two kinds of technology paths of device MBR.Only technically, these techniques are highly developed, but can not form a whole set of sewage
Processing system carries out the processing of systematization to sewage, also needs at special processing equipment to the sludge obtained after processing
Reason, processing cost is high, therefore invests relatively large, system maintenance management complexity, energy consumption and operational and administrative expenses height, and easily cause
Secondary pollution problem.This is because the main problem of activated sludge process is that sludge quantity is big, Treatment of Sludge is difficult, denitrogenation processing effect
It is unstable, and the main problem of membrane bioreactor is that investment, running cost are higher, runs more complex.
Utility model content
Problem to be solved in the utility model is, provides a kind of family sewage-treatment plant of strengthened denitrification, can
Strengthened denitrification performance reduces sludge yield, promotes effluent quality, and investment and operating cost are low.
In order to solve the above-mentioned technical problem, the utility model provides a kind of family sewage-treatment plant of strengthened denitrification,
A kind of family sewage-treatment plant of strengthened denitrification comprising along the area Hua Fen that water (flow) direction is sequentially communicated, anoxic zone, aerobic
Area, the area Xiao Yang, settling zone and sterile zones, the area Hua Fen are provided with the water inlet flowed into for sanitary sewage, the sterile zones
It is provided with the water outlet for clear water outflow, the area Hua Fen, anoxic zone, aerobic zone, the area Xiao Yang, settling zone and sterile zones are integrated
Separate to have in same container, in the container and multiple with the area Hua Fen, anoxic zone, aerobic zone, the area Xiao Yang, settling zone and disappear
The corresponding reactive tank in contaminated area, the aerobic zone are equipped with the region that 3 aeration quantity reduce in gradient, are followed successively by height along water (flow) direction
Intensity aeration area, middle intensity aeration area and low intensity aeration area, the aeration zone the Xiao Yang Qu Weiwu, the settling zone and describedization
Air-lift device is installed, the air-lift device can flow back the mud mixture of the reactive tank lower part of the settling zone between excrement area
To the water inlet one end in the area Hua Fen.
As the preferred scheme of the utility model, it is described high intensity aeration zone Dissolved Oxygen concentration Control 6mg/L~
Between 10mg/L, the Dissolved Oxygen concentration Control in the middle intensity aeration area is between 3mg/L~5mg/L, the low intensity aeration
The Dissolved Oxygen concentration Control in area is between 2mg/L~3mg/L, and the Dissolved Oxygen concentration Control in the area Xiao Yang is in 1mg/L~2mg/L
Between.
As the preferred scheme of the utility model, the high intensity aeration zone, middle intensity aeration area and low intensity aeration area
Be made of at least one reactive tank, each reactive tank of the aerobic zone passed through mouth of a river connection, the aerobic zone it is each anti-
Slot is answered to be provided with aerobe filler, the bottom of each reactive tank of the aerobic zone is equipped with aerator.
As the preferred scheme of the utility model, the area Xiao Yang is made of at least one reactive tank, the area Xiao Yang it is each
A reactive tank passed through mouth of a river connection, and each reactive tank of the aerobic zone is provided with aerobe filler.
As the preferred scheme of the utility model, the anoxic zone is made of at least one reactive tank, the anoxic zone it is each
A reactive tank passed through mouth of a river connection, and each reaction member of the anoxic zone is provided with anoxic biologic packing material.
As the preferred scheme of the utility model, the area Hua Fen is made of at least one reactive tank, the area Hua Fen it is each
A reactive tank passed through the mouth of a river connection, the top of first reactive tank in the area Hua Fen be provided with for sanitary sewage flow into
The mouth of a river.
As the preferred scheme of the utility model, the settling zone is made of at least one reactive tank, the settling zone it is each
A reactive tank passed through mouth of a river connection, and the air-lift device is mounted on the last one reactive tank and describedization excrement of the settling zone
Between first reactive tank in area.
As the preferred scheme of the utility model, from the settling zone be back to the mud mixture in the area Hua Fen with from
It is 3:1~4:1 that the external world, which flows into the ratio between the sanitary sewage in the area Hua Fen,.
As the preferred scheme of the utility model, the mouth of a river, the mistake were equipped between the area Hua Fen and the anoxic zone
The mouth of a river is connected with a diversion pipe, and the lower end of the diversion pipe extends to the bottom of the reactive tank in the area Hua Fen.
As the preferred scheme of the utility model, the mouth of a river, the mistake were equipped between the anoxic zone and the aerobic zone
The mouth of a river is plugged with a steel needle.
The family sewage-treatment plant for implementing a kind of strengthened denitrification of the utility model has compared with prior art
It is following the utility model has the advantages that
(1) the utility model collection excrement separation of solid and liquid, anoxic, aerobic, separation of solid and liquid, disinfection, structure is simple, fortune
Row easy maintenance is suitable for villages and small towns decentralized type sewage and handles；Activated sludge process A/O is organically combined with catalytic oxidation,
The nitrogen removal performance of sewage-treatment plant is enhanced, sludge yield is low, and effluent quality can reach " urban wastewater treatment firm pollutant
Discharge standard " (GB18918-2002) level-one B discharge standard, meet the actual requirement of rural economy and social sustainable development,
It is as shown in the table:
| Project | CODCr | BOD5 | NH3-N | TN | TP | SS |
| Influent quality | ≦400 | ≦220 | ≦40 | ≦45 | - | ≦160 |
| Level-one B | ≦60 | ≦20 | ≦8(15) | ≦20 | - | ≦20 |
(2) by high-intensitive aeration zone, middle intensity aeration area, low intensity aeration area and without aeration zone constitute staged aeration,
The dissolved oxygen concentration in the area Shi Ge reduces in gradient, so that mud mixture dissolved oxygen concentration before air lift is consumed to 1~2mg/L,
The dissolved oxygen content control of phegma is 2~4mg/L, so as to well by the Dissolved Oxygen concentration Control of anoxic zone in 0.5-
Within 1mg/L, to guarantee that anti-nitration reaction fast and effeciently carries out；Meanwhile high-intensitive aeration zone can also be nitrified rapidly
Reaction, ammonia nitrogen volumetric loading are high；The nitrogen removal performance of sewage-treatment plant is further enhanced as a result, is reduced sludge yield, is mentioned
Rise effluent quality.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, the attached drawing of embodiment will be made below simple
Ground introduction.
Fig. 1 is a kind of structural schematic diagram of the family sewage-treatment plant of strengthened denitrification provided by the utility model.
The area Tu2Shi Huafen, anoxic zone, aerobic zone, the area Xiao Yang, settling zone and sterile zones are integrated in the example in same container
Structure chart.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As depicted in figs. 1 and 2, the preferred embodiment of the utility model, a kind of family sewage-treatment plant of strengthened denitrification,
It includes the area Hua Fen 1 being sequentially communicated along water (flow) direction, anoxic zone 2, aerobic zone 3, the area Xiao Yang 4, settling zone 5 and sterile zones 6, institute
The area Shu Huafen 1 is provided with the water inlet 11 flowed into for sanitary sewage, the water outlet that the sterile zones 6 are provided with for clear water outflow
Mouth 61, the area Hua Fen 1, anoxic zone 2, aerobic zone 3, the area Xiao Yang 4, settling zone 5 and sterile zones 6 are integrated in same container 7, institute
Stating to separate in container 7 has the multiple and area Hua Fen 1, anoxic zone 2, aerobic zone 3, the area Xiao Yang 4, settling zone 5 and sterile zones 6 opposite
The reactive tank answered, the aerobic zone 1 are equipped with the region that 3 aeration quantity reduce in gradient, are followed successively by high-intensitive exposure along water (flow) direction
Gas area, middle intensity aeration area and low intensity aeration area, the area Xiao Yang 4 are no aeration zone, the settling zone 5 and the area Hua Fen
Air-lift device 8 is installed, the air-lift device 8 can flow back the mud mixture of the reactive tank lower part of the settling zone 5 between 1
To the water inlet one end in the area Hua Fen 1.
The sewage disposal process of this family sewage-treatment plant is as follows: sanitary sewage gravity flow enters family sewage-treatment plant
The area Hua Fen 1 remove partial organic substances and mud decrement into anoxic zone 2, and pass through denitrification work after changing excrement and being separated by solid-liquid separation
With realization total nitrogen removal；The water come out from anoxic zone 2 flows into aerobic zone 3 and realizes organic matter degradation and Ammonia Nitrification；From aerobic zone 3
Water out flows into the area Xiao Yang 4, after reducing dissolved oxygen, flows into settling zone 5；Mud-water separation, supernatant are realized in settling zone 5
Sterile zones 6 are flow to, is released after sterilized or reuse, the mud mixture of 5 lower part of settling zone is back to the area Hua Fen 1.
As it can be seen that the sewage-treatment plant collection excrement separation of solid and liquid of the utility model, anoxic, it is aerobic, be separated by solid-liquid separation, sterilize in
One, structure is simple, and operation and maintenance are easy, at low cost, is suitable for villages and small towns decentralized type sewage and handles；By activated sludge process A/O with
Catalytic oxidation is organically combined, and the nitrogen removal performance of sewage-treatment plant is enhanced, and sludge yield is low, and effluent quality can reach
To " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) level-one B discharge standard, meet rural economy and society
The actual requirement of meeting sustainable development, as shown in the table:
| Project | CODCr | BOD5 | NH3-N | TN | TP | SS |
| Influent quality | ≦400 | ≦220 | ≦40 | ≦45 | - | ≦160 |
| Level-one B | ≦60 | ≦20 | ≦8(15) | ≦20 | - | ≦20 |
It should also be noted that, constituting by high-intensitive aeration zone, middle intensity aeration area, low intensity aeration area and without aeration zone
Staged aeration, the dissolved oxygen concentration in the area Shi Ge reduce in gradient, so that mud mixture dissolved oxygen concentration before air lift consumes
To 1~2mg/L, the dissolved oxygen content control of phegma is 2~4mg/L, so as to well that the dissolved oxygen of anoxic zone 2 is dense
Degree control is within 0.5-1mg/L, to guarantee that anti-nitration reaction fast and effeciently carries out；Meanwhile high-intensitive aeration zone can also
Nitration reaction is carried out rapidly, and ammonia nitrogen volumetric loading is high；The nitrogen removal performance of sewage-treatment plant is further enhanced as a result, is dropped
Low sludge yield promotes effluent quality.
In the following, for adding by high-intensitive aeration zone, middle intensity aeration area, low intensity aeration area and without aeration zone constituting rank
Ladder type is aerated technical effect brought by this technical characteristic and is further described, and the experimental data of comparative example is as follows:
As can be seen from the above experimental data: increasing the denitrification effect that staged aeration is capable of enhanced sewage processing, especially
The removal effect of total nitrogen can be strengthened.And the reason of causing this result is: denitrification (denitrification) is also referred to as de-
Nitrogen effect.Denitrifying bacteria under anoxic conditions, restores nitrate, releases molecular nitrogen (N2) or nitrous oxide (N2O)
Process.The most suitable dissolved oxygen concentration of denitrification is≤1.0mg/L.Pass through high-intensitive aeration zone, middle intensity aeration as a result,
Area, low intensity aeration area and without aeration zone constitute staged aeration so that phegma dissolved oxygen control within 4mg/L, with
Sewage mixing in the area Hua Fen 1, the certain residence time of the area Zai Jinghuafen 1 can guarantee that sewage enters anoxic zone 2 and carries out anti-nitre
Changing dissolved oxygen can be within 1mg/L；It is compared under square one with the phegma for being not provided with staged aeration, is not provided with staged
The phegma of aeration generally all >=6mg/L, enter back into behind the area Hua Fen 1 and flow into 2 dissolved oxygen of anoxic zone and can not be effectively controlled
Within 1mg/L, therefore increases technical effect caused by staged aeration and imitated better than technology caused by staged aeration is not provided with
Fruit.
In order to guarantee denitrification effect, it is preferable that it is described high intensity aeration zone Dissolved Oxygen concentration Control 6mg/L~
Between 10mg/L, the Dissolved Oxygen concentration Control in the middle intensity aeration area is between 3mg/L~5mg/L, the low intensity aeration
The Dissolved Oxygen concentration Control in area is between 2mg/L~3mg/L, and the Dissolved Oxygen concentration Control in the area Xiao Yang is in 1mg/L~2mg/L
Between.
When it is implemented, the high intensity aeration zone, middle intensity aeration area and low intensity aeration area are reacted by least one
Slot composition, each reactive tank of the aerobic zone 3 passed through mouth of a river connection, and each reactive tank of the aerobic zone 3 is provided with
The bottom of oxygen biologic packing material, each reactive tank of the aerobic zone 3 is equipped with aerator；The area Xiao Yang 4 is anti-by at least one
Slot is answered to form, each reactive tank in the area Xiao Yang 4 passed through mouth of a river connection, and each reactive tank of the aerobic zone 3 is provided with
Aerobe filler；The anoxic zone 2 is made of at least one reactive tank, and each reactive tank of the anoxic zone 2 passed through the mouth of a river
Connection, each reaction member of the anoxic zone 2 are provided with anoxic biologic packing material；The area Hua Fen 1 is by least one reactive tank group
At each reactive tank in the area Hua Fen 1 passed through mouth of a river connection, and the top of first reactive tank in the area Hua Fen 1 is provided with
The water inlet flowed into for sanitary sewage；The settling zone 5 is made of at least one reactive tank, each reaction of the settling zone 5
Slot passed through mouth of a river connection, the air-lift device 8 be mounted on the settling zone the last one reactive tank and the area Hua Fen
Between first reactive tank.As shown in Figure 1, the area Hua Fen 1 is equipped with 3 reactive tanks, the anoxic zone 2 is equipped with 2 reactive tanks, institute
Aerobic zone 3 is stated equipped with 3 reactive tanks, respectively corresponds high-intensitive aeration zone, middle intensity aeration area and low intensity aeration area, it is described to disappear
Oxygen area 4 is equipped with 1 reactive tank, and the settling zone 5 is equipped with 1 reactive tank.
More preferably, the mouth of a river was equipped between the area Hua Fen 1 and the anoxic zone 2, the mouth of a river of crossing is connected with a water conservancy diversion
Pipe 9, the lower end of the diversion pipe 9 extend to the bottom of the reactive tank in the area Hua Fen 1.By the design of above-mentioned diversion pipe, make
Bottom in and top out is formed between the area Hua Fen and anoxic zone crosses water route.
More preferably, the mouth of a river was equipped between the anoxic zone 2 and the aerobic zone 3, the mouth of a river of crossing is plugged with a steel needle
(not indicating in figure) is blocked with preventing filler from entering the mouth of a river.
It should also be noted that, the area Hua Fen 1, anoxic zone 2, aerobic zone 3, the area Xiao Yang 4 and settling zone 5 by it is multiple spatially
The reactive tank of separation forms, and its role is to can buffer load impact when sewage treatment, guarantee stable effluent quality.Respectively
A overcurrent mouth is arranged at reactive tank top, and present apparatus whole process crosses water using pulling flow type, and sewage-treatment plant power-equipment is few, drop
Low operation energy consumption and fault point.
In addition, the anoxic biologic packing material of anoxic zone 2 preferably there is sufficient mechanical strength, sludge to be not easy to plug and biomembrane
Filler easy to attach can enhance biological denitrificaion performance, and retention part suspended matter.The aerobe filler of aerobic zone 3
Preferably hydrophily is strong, composite filling of large specific surface area keeps high biology by reinforcing edge flora on filler
Amount, efficient degradation organic matter and the nitrification effect for improving ammonia nitrogen；Simultaneously because the external reaction degree of aerobe filler with it is interior
There are bigger differences between portion's extent of reaction, therefore aerobic region (outside) and anoxic zones (inside) has coexisted in its own, into
And the reaction of part simultaneous nitrification and denitrification occurs, so that aerobic zone 3 also has certain total nitrogen removal ability, and system is surplus
Remaining sludge quantity is greatly reduced.
(mud mixture that the area Hua Fen 1 is back to from the settling zone 5 flows into mixed liquid recycle ratio with from the external world
The ratio between the sanitary sewage in the area Hua Fen 1) it is the important parameter for influencing present apparatus denitrification effect, by interior in proper order by aerobic zone 3
Nitrate nitrogen flow back into anoxic zone 2, anti-nitration reaction can just be gone on smoothly.It is research mixed liquid recycle ratio to the shadow of the present apparatus
It rings, devises multinomial comparative experiments, the comparative example data of part has hereafter been selected to be illustrated, specific as follows:
As can be seen from the above experimental data: mixed liquid recycle ratio has certain shadow to the removal of COD, ammonia nitrogen, total nitrogen
It rings；Especially with the increase of mixed liquid recycle ratio, the trend fallen after rising integrally is presented in the removal rate of system ammonia nitrogen and total nitrogen；
When mixed liquid recycle ratio is lower, it is affected to the removal effect of system total nitrogen；When flowing back relatively high, to system total nitrogen and ammonia nitrogen
Removal effect be affected；This sewage-treatment plant is in mixed liquid recycle ratio (R) 3:1~4:1 (namely 300%~400%)
In the case where run optimal, effluent quality can reach level-one B discharge standard.And the reason of causing this result, is: working as nitrification
When liquid reflux is relatively low, the amount for flowing back into the nitrate nitrogen of anoxic zone 2 is less, and it is denitrifying that anoxic zone 2 cannot play its completely
Potentiality, to mainly influence the removal effect of whole system total nitrogen.When mixed liquid recycle ratio is higher, 2 nitre of anoxic zone is flowed back into
The amount of hydrochlorate nitrogen is more, will theoretically increase the nitric efficiency of system, but the increase of mixed liquid recycle ratio can not only make anoxic zone 2
Hydraulic detention time shorten, and will lead to and bring more dissolved oxygens into anoxic pond from aerobic tank end, the two all will drop
The nitric efficiency of low system, to influence the removal effect of system ammonia nitrogen and total nitrogen.On the other hand, biggish mixed liquid recycle ratio
Will lead to COD cannot effectively be removed in the area Hua Fen 1 and anoxic zone 2, increase the COD elimination capacity of aerobic zone 3, especially into
When entering the first reactive tank of aerobic zone 3, the removal of ammonia nitrogen is seriously hampered so that water outlet ammonia nitrogen be sharply increased, total nitrogen also with
Raising.
Above disclosed is only the preferred embodiment of the utility model, certainly cannot be practical new to limit this with this
The interest field of type, therefore equivalent variations made according to the patent scope of the utility model still belong to the utility model and are covered
Range.
Claims (10)
1. a kind of family sewage-treatment plant of strengthened denitrification, which is characterized in that including the change excrement being sequentially communicated along water (flow) direction
Area, anoxic zone, aerobic zone, the area Xiao Yang, settling zone and sterile zones, the area Hua Fen are provided with the water inlet flowed into for sanitary sewage
Mouthful, the water outlet that the sterile zones are provided with for clear water outflow, the area Hua Fen, anoxic zone, aerobic zone, the area Xiao Yang, precipitating
Area and sterile zones are integrated in same container, separate in the container have it is multiple with the area Hua Fen, anoxic zone, aerobic zone, disappear
Oxygen area, the corresponding reactive tank in settling zone and sterile zones, the aerobic zone are equipped with the region that 3 aeration quantity reduce in gradient, edge
Water (flow) direction is followed successively by high-intensitive aeration zone, middle intensity aeration area and low intensity aeration area, the aeration zone the Xiao Yang Qu Weiwu, institute
It states and air-lift device is installed between settling zone and the area Hua Fen, the air-lift device can be by the reactive tank lower part of the settling zone
Mud mixture be back to the water inlet one end in the area Hua Fen.
2. the family sewage-treatment plant of strengthened denitrification as described in claim 1, which is characterized in that the high intensity aeration zone
Dissolved Oxygen concentration Control between 6mg/L~10mg/L, the Dissolved Oxygen concentration Control in the middle intensity aeration area 3mg/L~
Between 5mg/L, the Dissolved Oxygen concentration Control in the low intensity aeration area is between 2mg/L~3mg/L, the dissolution in the area Xiao Yang
Oxygen concentration controls between 1mg/L~2mg/L.
3. the family sewage-treatment plant of strengthened denitrification as described in claim 1, which is characterized in that the high-intensitive aeration
Area, middle intensity aeration area and low intensity aeration area are made of at least one reactive tank, and each reactive tank of the aerobic zone passes through
Mouth of a river connection is crossed, each reactive tank of the aerobic zone is provided with aerobe filler, each reactive tank of the aerobic zone
Bottom is equipped with aerator.
4. the family sewage-treatment plant of strengthened denitrification as described in claim 1, which is characterized in that the area Xiao Yang is by least
1 reactive tank composition, each reactive tank in the area Xiao Yang passed through mouth of a river connection, and each reactive tank of the aerobic zone is built-in
There is aerobe filler.
5. the family sewage-treatment plant of strengthened denitrification as described in claim 1, which is characterized in that the anoxic zone is by least
1 reactive tank composition, each reactive tank of the anoxic zone passed through the mouth of a river and was connected to, in each reaction member of the anoxic zone
Equipped with anoxic biologic packing material.
6. the family sewage-treatment plant of strengthened denitrification as described in claim 1, which is characterized in that the area Hua Fen is by least
1 reactive tank composition, each reactive tank in the area Hua Fen passed through mouth of a river connection, first reactive tank in the area Hua Fen it is upper
Portion is provided with the water inlet flowed into for sanitary sewage.
7. the family sewage-treatment plant of strengthened denitrification as described in claim 1, which is characterized in that the settling zone is by least
1 reactive tank composition, each reactive tank of the settling zone passed through mouth of a river connection, and the air-lift device is mounted on the precipitating
Between the last one reactive tank in area and first reactive tank in the area Hua Fen.
8. the family sewage-treatment plant of strengthened denitrification as claimed in claim 7, which is characterized in that flow back from the settling zone
It is 3:1~4:1 to the mud mixture in the area Hua Fen and the ratio between sanitary sewage from the extraneous inflow area Hua Fen.
9. the family sewage-treatment plant of strengthened denitrification as described in claim 1, which is characterized in that the area Hua Fen with it is described
The mouth of a river was equipped between anoxic zone, the mouth of a river of crossing is connected with a diversion pipe, and the lower end of the diversion pipe extends to describedization excrement
The bottom of the reactive tank in area.
10. the family sewage-treatment plant of strengthened denitrification as described in claim 1, which is characterized in that the anoxic zone and institute
It states and was equipped with the mouth of a river between aerobic zone, the mouth of a river of crossing is plugged with a steel needle.
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|---|---|---|---|---|
| CN110980950A (en) * | 2019-12-23 | 2020-04-10 | 中广核环保产业有限公司 | Vertical flow multistage A/O sewage treatment device and sewage treatment method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110980950A (en) * | 2019-12-23 | 2020-04-10 | 中广核环保产业有限公司 | Vertical flow multistage A/O sewage treatment device and sewage treatment method thereof |
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