CN109626760A - Rain dirt mixed flow drains total system and method - Google Patents
Rain dirt mixed flow drains total system and method Download PDFInfo
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- CN109626760A CN109626760A CN201910098378.2A CN201910098378A CN109626760A CN 109626760 A CN109626760 A CN 109626760A CN 201910098378 A CN201910098378 A CN 201910098378A CN 109626760 A CN109626760 A CN 109626760A
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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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Abstract
The present invention discloses a kind of rain dirt mixed flow draining total system and method.The system includes the closure works system being sequentially communicated, level-one biological treatment system and artificial wet land reinforced processing system；Wherein, the level-one biological treatment system, which includes at least, is sequentially communicated contact anoxic pond, MBBR aerobic tank and inclined-tube sedimentation tank；The artificial wet land reinforced processing system includes being sequentially communicated second level denitrogenation dephosphorizing treatment region, ammonia nitrogen removal stiffened region, dephosphorization stiffened region and Tail water reuse area.A kind of rain dirt mixed flow of the invention drains total system, pipe network row mouth can not cut dirt receive pipe in the case where, the contaminant capacity that the draining of rain dirt mixed flow is effectively controlled using the process of "+level-one biological treatment+artificial wet land reinforced processing of shutting off ", is guaranteed into river water matter.It can be by water-quality COD, NH after the rain dirt mixed flow water process of low concentration3- N, TP can be directly discharged into river up to the level-one A standard in " urban wastewater treatment firm pollutant emission standard " (GB18918-2002), water outlet.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of rain dirt mixed flow draining total system.
Background technique
For the outstanding problem for solving China's quality of water environment worsening as early as possible, " water is dirty for State Council's issuing and implementation in 2017
Dye prevention and treatment action plan ", the improvement of China's quality of water environment is actively promoted, water environment safety is improved.Therefore place people's political affairs at different levels
Organize city black and odorous water renovation in mansion, it is intended that promote living environment's mass, ensure resident's safe water, improve city
Ecological environment.There are many factor that water body is contaminated in the city of city, wherein city pipeline confluence of rainwater and sewage system or rain sewage diversion
Tubing giving sufficient strength hybrid junction, misconnection and directly caused by sewage to enter river problem be one of major source, regulation urgency is the most important thing.
According to " city black and odorous water renovation guide ", and the solution of domestic and international rain dirt mixed flow is combined, mainly
Solving technique is to cut a dirt to receive pipe and end-o f-pipe -control two major parts.Cutting dirt and receiving pipe is the pipeline that shut off by laying sewage along the lake along the river, and
Rationally setting promotes (transporting) pump house, and sewage is shut off and is included in municipal sewage collection system and processing system；It is black and odorous water regulation
Most directly effective engineering measure, and takes the premise of other technologies measure, but there are costs of investment larger, construction period
The disadvantages of length, some areas execution conditions do not have.End-o f-pipe -control is not yet to determine that part pipe network can not in pipe network improving planning
Dirt is cut to receive in the case where pipe, by the way of directly handling will sewage pollution amount cut down after be discharged into river again, the water body water being discharged into
Matter is determined with treatment process according to the water quality of raw water；The main advantage of this method is that cost of investment is lower, and the construction time is short, in dry season
It can guarantee and effectively cut down into river sewage, initial rainwater pollution is effectively controlled.
Due to water quality indicator COD, NH after rain dirt mixed flow3- N, TP isoconcentration are lower, merely using activated sludge process, general
The methods of logical artificial swamp can not effectively remove pollution factor in water, be difficult for water quality to be promoted to " urban wastewater treatment firm dirt
Contaminate object discharge standard " level-one A standard in (GB18918-2002), it can only achieve and eliminate black smelly level, for increasingly strict
For water body environment quality standard, there are technical bottlenecks.Research institution and enviromental protection enterprise all cut at dirt both at home and abroad at present
The research and development of science and engineering skill, it is intended to which under the black and odorous water treatment status that nearly phases-time is tight, task is heavy, it is a set of effective to develop
Processing method, promote water environment, guarantee the long stream of clear water.
Summary of the invention
To overcome drawbacks described above, it is an object of the invention to be to provide a kind of integrated treatment system for the draining of rain dirt mixed flow
System.To pipe network row mouth can not cut dirt receive pipe in the case where, using "+level-one biological treatment+artificial wet land reinforced place of shutting off
The process of reason " effectively controls the contaminant capacity of rain dirt mixed flow draining, guarantees into river water matter.
In order to achieve the above objectives, rain dirt mixed flow of the present invention drains total system, including be sequentially communicated closure works system,
Level-one biological treatment system and artificial wet land reinforced processing system；Wherein,
The level-one biological treatment system, which includes at least, is sequentially communicated contact anoxic pond, MBBR aerobic tank and tube settling
Pond；
The artificial wet land reinforced processing system include be sequentially communicated second level denitrogenation dephosphorizing treatment region, ammonia nitrogen removal stiffened region,
Dephosphorization stiffened region and Tail water reuse area.
Wherein, it in the level-one biological treatment system, contacts and uses 3-D filler carrier in anoxic pond；MBBR aerobic tank
Micro-hole aerator is installed in middle bioactivity suspending carrier, bottom；Inclined-tube sedimentation tank uses inclined tube separated sludge, and spoil disposal is arranged in bottom
Mouthful.
Wherein, in the artificial wet land reinforced processing system, second level denitrogenation dephosphorizing treatment region surface is evenly arranged " well " word
Type perforation water inlet pipe, while emergent aquactic plant is planted, gravel, the diatomite mixed fillers of inside filling different gradation, and launch anti-
Nitrification and phosphorus removal bacterium；Fill zeolite filler in ammonia nitrogen removal stiffened region；Dephosphorization stiffened region surface is evenly arranged " well " font perforation water inlet pipe,
Filling lime stone in inside plants emergent aquactic plant, bottom setting perforation outlet pipe.
Wherein, the contact anoxic pond hydraulic detention time is 3~4h, and 3-D filler packing ratio is 70~85%.
Wherein, the MBBR aerobic tank hydraulic detention time is 8~10h, and novel bioactive suspending carrier packing ratio is
40~60%, gas-water ratio is 8:1~12:1.
Wherein, it is contacted in the level-one biological treatment system and is equipped with effluent recycling dress between anoxic pond and MBBR aerobic tank
It sets, reflux ratio is 100~300%.
Wherein, the artificial swamp answers well developed root system using emergent aquactic plant, utilizes the more preferably fixed soil of the huge root system of plant
Earth is kept soil from packing together, and the denitrification dephosphorization function bacterium to add provides good living environment.
Wherein, the denitrifying phosphorus removing bacteria dosage is drain day output 0.01%.
Wherein, the second level denitrogenation dephosphorizing treatment region cobble-stone packing material size is 20~60mm, and ammonia nitrogen removal boils in stiffened region
Hardcore partial size is 30~60mm, and limestone particle size is 30~60mm in dephosphorization stiffened region.
Wherein, the artificial wet land reinforced processing system includes three regions, between three regions using concrete walls every
It opens, effluent recycling device is equipped between second level denitrogenation dephosphorizing treatment region and dephosphorization stiffened region, reflux ratio is 100~200%.
In order to achieve the above objectives, rain dirt mixed flow of the present invention drains integrated conduct method,
Step (1) cuts off drainage pipeline before arranging mouth and closure works system A, including Vatch basin A1 and dam pump 1 is arranged, cuts
Flow the outlet well A1 setting overflow port；It is 1~2h that hydraulic detention time, which is arranged, in Vatch basin A1；Then level-one is pumped by dam pump 1
Biological treatment system B, dam pump 1 use submersible sewage pump；
Step (2), rain dirt mixed flow drain the contact anoxic pond B1 for being pumped into level-one biological treatment system B, the uniform cloth in surface
Emergent aquactic plant 14 is planted on " well " the font perforation water inlet pipe 9 set, surface, and plantation density is 18 plants/m2；Contact anoxic pond B1 waterpower
Residence time is 3~4h, and the biggish 3-D filler carrier 2 of specific area is used in pond, and packing ratio is 70~85%；Then it is discharged certainly
It is flow to MBBR aerobic tank B2, hydraulic detention time is 8~10h, uses novel bioactive suspending carrier 3 in pond, packing ratio is
40~60%；Micro-hole aerator 4 is installed in bottom, and gas-water ratio is 8:1~12:1；It contacts between anoxic pond B1 and MBBR aerobic tank B2
Equipped with mixed liquor reflux pump 5, reflux ratio is 100~300%.Treated water flows into inclined-tube sedimentation tank B3 from lower end, and inclined tube 6 is straight
Diameter is
Step (3), level-one biological treatment system B water outlet enter second level denitrogenation dephosphorizing in artificial wet land reinforced processing system C
Treatment region C1, surface is evenly arranged " well " font perforation water inlet pipe 9, while planting emergent aquactic plant 14, inside filling different gradation
Gravel (10-12), the mixed fillers such as diatomite 13, gravel filling (10-12) partial size is 10~60mm, and launches denitrification and remove
Phosphorus bacterium, denitrifying phosphorus removing bacteria dosage are drain day output 0.01%；Ammonia nitrogen removal stiffened region C2 is filled primarily with zeolite filler
15,15 partial size of zeolite filler is 30~60mm；The dephosphorization stiffened region surface C3 is evenly arranged " well " font perforation water inlet pipe 9, internal
Lime stone 16 is filled, 16 partial size of lime stone is 30~60mm, and plants emergent aquactic plant 14, and plantation density is 18 plants/m2, bottom is set
Set perforation outlet pipe；Artificial wet land reinforced processing C system includes three regions, is separated between three regions using concrete walls,
Clear water reflux pump 17 is equipped between second level denitrogenation dephosphorizing treatment region C1 and dephosphorization stiffened region C3, reflux ratio is 100~200%.
A kind of rain dirt mixed flow of the invention drains total system, pipe network row's mouth can not cut dirt receive pipe in the case where,
The pollution of rain dirt mixed flow draining is effectively controlled using the process of "+level-one biological treatment+artificial wet land reinforced processing of shutting off "
Amount, guarantees into river water matter.It can be by water-quality COD, NH after the rain dirt mixed flow water process of low concentration3- N, TP are up to " urban wastewater treatment
Factory's pollutant emission standard " level-one A standard in (GB18918-2002), water outlet can be directly discharged into river.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Description of symbols:
A- closure works system (A1- Vatch basin), B- level-one biological treatment system (B1- contact anoxic pond, B2-MBBR aerobic tank,
B3- inclined-tube sedimentation tank, B4- equipment room), the artificial wet land reinforced processing system of C- (C1- second level denitrogenation dephosphorizing treatment region, C2- deamination
Nitrogen stiffened region, C3- dephosphorization stiffened region, C4- Tail water reuse area).
1- dam pump, 2- 3 D elastic filler, 3-MBBR filler, 4- micro-hole aerator, 5- mixed liquor reflux pump, 6- inclined tube
Filler, 7- sludge bucket, 8- Aeration fan, 9- " well " font perforation water inlet pipe, 10- gravel (10~20mm of partial size), 11- gravel
(20~40mm of partial size), 12- gravel (40~60mm of partial size), 13- diatomite, 14- emergent aquactic plant, 15- zeolite (partial size 30~
60mm), 16- lime stone (30~60mm of partial size), 17- clear water reflux pump.
Specific embodiment
Below by specific embodiment, the invention will be further described, and it is not limit that following embodiment, which is descriptive,
Qualitatively, this does not limit the scope of protection of the present invention.
As shown in Figure 1, a kind of rain dirt mixed flow drains total system, mainly include the closure works system A being sequentially communicated,
Tri- component parts of level-one biological treatment system B and artificial wet land reinforced processing system C.Rain dirt mixed flow be drained into river it
Before, Vatch basin A1 is arranged in cutting pipeline, and sewage is pumped by level-one biological treatment system B by a section dirty pump 1 and carries out coagulation,
Pass sequentially through contact anoxic pond B1 denitrogenation, MBBR aerobic tank B2 removal COD and a small amount of phosphorus, inclined-tube sedimentation tank B3 separated sludge；Place
Sewage after reason passes sequentially through second level denitrogenation dephosphorizing treatment region C1 and further takes off again from artificial wet land reinforced processing system C is flow to
Nitrogen dephosphorization, ammonia nitrogen removal stiffened region C2 further remove ammonia nitrogen and dephosphorization stiffened region C3 further goes dephosphorization, finally mix rain dirt
Stream draining qualified discharge.
In the present invention:
Closure works system A mainly passes through Vatch basin A1 and first collects rain dirt mixed flow pipe drainage to be pumped into processing system again, is protected
Demonstrate,prove the duration and stability of processing system.
Level-one biological treatment system B include contact anoxic pond B1, MBBR aerobic tank (moving bed biofilm reactor) B2, tiltedly
Pipe sedimentation basin B3 and equipment room B4.Anoxic pond B1 is contacted, nitrate nitrogen is converted into nitrogen under the action of heterotrophic denitrification bacterium；
Biomembrane can be generated using 3 D elastic filler in pond, to increase processing load, improve treatment effeciency.MBBR aerobic tank
B2, organic pollutant are that carbon dioxide, water and others are inorganic by heterotrophism aerobic degradation in the front end aerobic tank B2 MBBR
Salt, so that organic pollutant be made to be reduced to extremely low level；Ammoniacal nitrogen is then made in the middle rear end of MBBR aerobic tank B2 in nitrobacteria
It is converted into nitrate nitrogen under, the sludge age for meeting nitrobacteria growth is maintained, to can guarantee good nitrification effect；Pass through to
A certain number of suspending carriers are added in reactor, biomass and biological species in reactor are improved, to improve reactor
Treatment effeciency.Since packing density is close to water, so, with water in the state that is thoroughly mixed, microorganism is raw when aeration
Long environment is gas, liquid, solid three-phase.The collision and shear action of carrier in water, keep air bubble more tiny, increase oxygen
The utilization rate of gas.In addition, different biological species are all had inside and outside each carrier, some anaerobic bacterias of growth inside or facultative aerobe,
Outside is aerobic bacteria, and carrier each in this way is a microreactor, exists simultaneously nitration reaction and anti-nitration reaction, from
And improve treatment effect.Inclined-tube sedimentation tank B3 guarantees effluent quality using inclined tube filler 6 effectively by sludge settling；Inclined tube
Lamina flow principle is utilized in precipitation filling 6, improves the processing capacity of sedimentation basin；Particle settling height is shortened, so as to shorten
Sedimentation time；The desilting area of sedimentation basin is increased, to improve treatment effeciency.
Artificial wet land reinforced processing system C mainly takes at vertical subsurface flow wetland pattern, including second level denitrogenation dephosphorizing
Manage area C1, ammonia nitrogen removal stiffened region C2, dephosphorization stiffened region C3 and Tail water reuse area C4.Second level denitrogenation dephosphorizing treatment region C1 is utilized and is endured
Water plant 14 and denitrifying phosphorus removing bacteria carry out denitrogenation dephosphorizing to water quality；Emergent aquactic plant 14 answers well developed root system, huge using plant
The more preferable fixing soil of root system, keeps soil from packing together, and not only can directly absorb the rich nutritive materials such as N, P in sewage, Er Qieqi
The oxygen function decomposed by microbial conversion organic matter of secreting of root system provides suitable environmental condition；Denitrifying Phosphate Accumulating Organisms (DPB) are
One kind can release phosphorus under anaerobic state, and there are nitrate (NO for anoxic3 -) or nitrite (NO2 -) in the case where poly- phosphorus, and it is same
When denitrifying polyP bacteria.Ammonia nitrogen removal stiffened region C2 further removes ammonia nitrogen using zeolite 15；Natural zeolite 15 is a kind of aqueous
Alkali or alkaline-earth metal aluminium silicate mineral, the tectosilicate being made of oxygen-octahedron and aluminum-oxygen tetrahedron has
The features such as large specific surface area, absorption property is good, and ion-exchange capacity is strong, stable chemical performance has preferably the removal of ammonia nitrogen
Effect, to concentration have universality.Dephosphorization stiffened region C3 further goes dephosphorization using lime stone 16 and emergent aquactic plant 14；Stone
The Ca contained in 16 filler of lime stone2+Insoluble salt is generated with phosphate reaction to effectively remove phosphorus in water.If effluent quality has
It is micro- super, clear water reflux pump 17 can be used by water and be back to leading portion reprocessing.
Embodiment
Rain dirt mixed flow of the present invention drains integrated conduct method, comprising the following steps:
Step (1) cuts off drainage pipeline before arranging mouth and closure works system A, including Vatch basin A1 and dam pump 1 is arranged, cuts
Flow the outlet well A1 setting overflow port.It is 1~2h that hydraulic detention time, which is arranged, in Vatch basin A1；Then level-one is pumped by dam pump 1
Biological treatment system B, dam pump 1 use submersible sewage pump.
Step (2), rain dirt mixed flow drain the contact anoxic pond B1 for being pumped into level-one biological treatment system B, the uniform cloth in surface
Emergent aquactic plant 14 is planted on " well " the font perforation water inlet pipe 9 set, surface, and plantation density is 18 plants/m2；Contact anoxic pond B1 waterpower
Residence time is 3~4h, and the biggish 3-D filler carrier 2 of specific area is used in pond, and packing ratio is 70~85%.Then it is discharged certainly
It is flow to MBBR aerobic tank B2, hydraulic detention time is 8~10h, uses novel bioactive suspending carrier 3 in pond, packing ratio is
40~60%；Micro-hole aerator 4 is installed in bottom, and gas-water ratio is 8:1~12:1；It contacts between anoxic pond B1 and MBBR aerobic tank B2
Equipped with mixed liquor reflux pump 5, reflux ratio is 100~300%.Treated water flows into inclined-tube sedimentation tank B3 from lower end, and inclined tube 6 is straight
Diameter is
Step (3), level-one biological treatment system B water outlet enter second level denitrogenation dephosphorizing in artificial wet land reinforced processing system C
Treatment region C1, surface is evenly arranged " well " font perforation water inlet pipe 9, while planting emergent aquactic plant 14, inside filling different gradation
Gravel (10-12), the mixed fillers such as diatomite 13, gravel filling (10-12) partial size is 10~60mm, and launches denitrification and remove
Phosphorus bacterium, denitrifying phosphorus removing bacteria dosage are drain day output 0.01%；Ammonia nitrogen removal stiffened region C2 is filled primarily with zeolite filler
15,15 partial size of zeolite filler is 30~60mm；The dephosphorization stiffened region surface C3 is evenly arranged " well " font perforation water inlet pipe 9, internal
Lime stone 16 is filled, 16 partial size of lime stone is 30~60mm, and plants emergent aquactic plant 14, and plantation density is 18 plants/m2, bottom is set
Set perforation outlet pipe.Artificial wet land reinforced processing C system includes three regions, is separated between three regions using concrete walls,
Clear water reflux pump 17 is equipped between second level denitrogenation dephosphorizing treatment region C1 and dephosphorization stiffened region C3, reflux ratio is 100~200%.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Application examples:
Sewage picks up from the rain dirt mixed flow pipe drainage on certain river bank, treating capacity 200t/d.Vatch basin residence time 2h；It connects
Anoxic pond residence time 3h is touched, 3-D filler carrier packing ratio is 85%；MBBR oxidation pond residence time 10h, new bio are living
Property suspending carrier 3, packing ratio 55%, aeration gas-water ratio be 10:1, return current ratio of the mixed liquid be 200~300%；Clear water reflux pump
It is not yet turned on.Inlet and outlet water water quality see the table below:
| Serial number | Water quality indicator | Unit | Before improvement | After improvement | Handling rate |
| 1 | COD | mg/L | 143~167 | 36 | >=75% |
| 2 | Ammonia nitrogen | mg/L | 10.9~11.5 | 2.2 | >=38% |
| 3 | TP | mg/L | 0.86~0.94 | 0.21 | >=76% |
| 4 | SS | mg/L | 23 | 6 | >=74% |
System has stronger removal rate to COD, ammonia nitrogen, TP as can be seen from the table, and effluent quality can reach level-one A mark
It is quasi-.
Claims (10)
1. a kind of rain dirt mixed flow drains total system, it is characterised in that: including closure works system, the level-one biology being sequentially communicated
Processing system and artificial wet land reinforced processing system；Wherein,
The level-one biological treatment system, which includes at least, is sequentially communicated contact anoxic pond, MBBR aerobic tank and inclined-tube sedimentation tank；
The artificial wet land reinforced processing system includes being sequentially communicated second level denitrogenation dephosphorizing treatment region, ammonia nitrogen removal stiffened region, dephosphorization
Stiffened region and Tail water reuse area.
2. rain dirt mixed flow as described in claim 1 drains total system, it is characterised in that: the level-one biological treatment
In system, contacts and use 3-D filler carrier in anoxic pond；Micropore is installed in bioactivity suspending carrier in MBBR aerobic tank, bottom
Aerator；Inclined-tube sedimentation tank uses inclined tube separated sludge, and mud discharging mouth is arranged in bottom.
3. rain dirt mixed flow as described in claim 1 drains total system, it is characterised in that: the artificial wet land reinforced place
In reason system, artificial swamp uses vertical subsurface flow wetland pattern, and second level denitrogenation dephosphorizing treatment region surface is evenly arranged " well "
Font perforation water inlet pipe, while emergent aquactic plant is planted, gravel, the diatomite mixed fillers of inside filling different gradation, and launch
Denitrifying phosphorus removing bacteria；Fill zeolite filler in ammonia nitrogen removal stiffened region；Dephosphorization stiffened region surface is evenly arranged the perforation water inlet of " well " font
Pipe, inside filling lime stone plant emergent aquactic plant, bottom setting perforation outlet pipe.
4. a kind of rain dirt mixed flow as described in claim 1 drains total system, it is characterised in that: the contact anoxic pond
Hydraulic detention time is 3~4h, and 3-D filler packing ratio is 70~85%.
5. a kind of rain dirt mixed flow as described in claim 1 drains total system, it is characterised in that: the MBBR aerobic tank
Hydraulic detention time is 8~10h, and novel bioactive suspending carrier packing ratio is 40~60%, and gas-water ratio is 8:1~12:1.
6. a kind of rain dirt mixed flow as described in claim 1 drains total system, it is characterised in that: at the level-one biology
It is contacted in reason system and is equipped with effluent recycling device between anoxic pond and MBBR aerobic tank, reflux ratio is 100~300%.
7. a kind of rain dirt mixed flow as described in claim 1 drains total system, it is characterised in that: the artificial swamp is adopted
Well developed root system is answered with emergent aquactic plant, using the more preferable fixing soil of the huge root system of plant, is kept soil from packing together, for the anti-nitre added
Change phosphorus removal functional bacteria and good living environment is provided.
8. a kind of rain dirt mixed flow as described in claim 1 drains total system, it is characterised in that: the second level denitrogenation removes
Phosphorus treatment region cobble-stone packing material size is 20~60mm, and zeolite filler partial size is 30~60mm in ammonia nitrogen removal stiffened region, and dephosphorization is strong
Changing limestone particle size in area is 30~60mm.
9. a kind of rain dirt mixed flow as described in claim 1 drains total system, it is characterised in that: the artificial swamp is strong
Changing processing system includes three regions, is separated between three regions using concrete walls, second level denitrogenation dephosphorizing treatment region and dephosphorization
Effluent recycling device is equipped between stiffened region, reflux ratio is 100~200%.
10. a kind of rain dirt mixed flow drains integrated conduct method, which is characterized in that the method the following steps are included:
Step (1) cuts off drainage pipeline before arranging mouth and closure works system A, including Vatch basin A1 and dam pump 1, Vatch basin is arranged
The outlet A1 setting overflow port；It is 1~2h that hydraulic detention time, which is arranged, in Vatch basin A1；Then level-one biology is pumped by dam pump 1
Processing system B, dam pump 1 use submersible sewage pump；
Step (2), rain dirt mixed flow drain the contact anoxic pond B1 for being pumped into level-one biological treatment system B, what surface was evenly arranged
Emergent aquactic plant 14 is planted on " well " font perforation water inlet pipe 9, surface, and plantation density is 18 plants/m2；Contact anoxic pond B1 hydraulic retention
Time is 3~4h, and the biggish 3-D filler carrier 2 of specific area is used in pond, and packing ratio is 70~85%；Then water outlet is flow to certainly
MBBR aerobic tank B2, hydraulic detention time are 8~10h, use novel bioactive suspending carrier 3 in pond, packing ratio for 40~
60%；Micro-hole aerator 4 is installed in bottom, and gas-water ratio is 8:1~12:1；It is equipped between contact anoxic pond B1 and MBBR aerobic tank B2
Mixed liquor reflux pump 5, reflux ratio are 100~300%.Treated water flows into inclined-tube sedimentation tank B3 from lower end, and 6 diameter of inclined tube is
Step (3), level-one biological treatment system B water outlet enter second level denitrogenation dephosphorizing processing in artificial wet land reinforced processing system C
Area C1, surface is evenly arranged " well " font perforation water inlet pipe 9, while planting emergent aquactic plant 14, the gravel of inside filling different gradation
The mixed fillers such as stone (10-12), diatomite 13, gravel filling (10-12) partial size is 10~60mm, and launches denitrification dephosphorization
Bacterium, denitrifying phosphorus removing bacteria dosage are drain day output 0.01%；Ammonia nitrogen removal stiffened region C2 is filled primarily with zeolite filler 15,
15 partial size of zeolite filler is 30~60mm；The dephosphorization stiffened region surface C3 is evenly arranged " well " font perforation water inlet pipe 9, inside filling
Lime stone 16,16 partial size of lime stone is 30~60mm, and plants emergent aquactic plant 14, and plantation density is 18 plants/m2, bottom, which is arranged, wears
Hole outlet pipe；Artificial wet land reinforced processing C system includes three regions, is separated between three regions using concrete walls, second level
Clear water reflux pump 17 is equipped between denitrogenation dephosphorizing treatment region C1 and dephosphorization stiffened region C3, reflux ratio is 100~200%.
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| CN110054365A (en) * | 2019-05-25 | 2019-07-26 | 安徽华骐环保科技股份有限公司 | A kind of the bypass processing system and its processing method of black and odorous water |
| CN111847783A (en) * | 2020-07-24 | 2020-10-30 | 湖北加德科技股份有限公司 | High-efficient integrated sewage treatment plant of fine motion power |
| CN114149147A (en) * | 2021-12-06 | 2022-03-08 | 中国市政工程华北设计研究总院有限公司滨海新区分公司 | Sponge cell LID facility and method for treating initial rainwater |
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Application publication date: 20190416 |