CN107540159A - A kind of system and method for enhanced type filtration system treatment of sewage in expressway service - Google Patents
A kind of system and method for enhanced type filtration system treatment of sewage in expressway service Download PDFInfo
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- CN107540159A CN107540159A CN201710902963.4A CN201710902963A CN107540159A CN 107540159 A CN107540159 A CN 107540159A CN 201710902963 A CN201710902963 A CN 201710902963A CN 107540159 A CN107540159 A CN 107540159A
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- sewage
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- type filtration
- expressway service
- filtration system
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Abstract
The invention discloses a kind of system and method for enhanced type filtration system treatment of sewage in expressway service, wherein system includes anaerobic organism pond and enhanced type filtration system, and anaerobic organism pond is by the sewage after processing, through enhanced type filtration system filtration process；Sewage after anaerobic organism pond is handled water distributor, into nitrification layer, denitrification layer and metalling, flows through the filling filtrate in run-off via cloth tank.Beneficial effects of the present invention：Met using the suitable sewage in expressway service water quality and quantity feature of the above scheme present invention, the denitrogenation dephosphorizing efficiency of raising CRI technologies, the water quality after processing《Urban wastewater treatment firm pollutant emission standard》One-level A standards in (GB18918 2002), Expressway Service Treated sewage reusing can be used as.This method construction cost is low, and maintenance management is convenient, beautifies the environment, suitable for Expressway Service.
Description
Technical field
The present invention relates to sewage water treatment method, more particularly to a kind of enhanced type filtration system processing Expressway Service are dirty
The system and method for water.
Background technology
Statement in this part merely provides the background information relevant with present disclosure, thereby increases and it is possible to does not form
Prior art.
Expressway Service for holdee provide service for life and work facilitate while, also generate a certain amount of
Sewage.Because Expressway Service is generally off-site from city, its sewage can not be directly discharged into municipal downcomer network, terminal drainage point
It is mostly farmland, pond and river course etc., and is nearby discharged for a long time without processing without supporting sewage disposal system, sewage,
Adverse effect is caused to surrounding environment.
To drug in some provinces highway Sewage Treatment Facilities, the survey showed that for Ministry of Communications, and sanitary sewage disposal is set
Apply and many problems be present, be mainly manifested in sewage treatment process disorderly, effluent quality compliance rate is high, device disposal ability and reality
Sewage quantity has relatively large deviation, construction and maintenance management are lack of standardization, lack professional administrative staff, operating cost is higher etc..Therefore,
The processing of sewage in expressway service and reuse are still a urgent problem to be solved.
At present, the conventional sewage water treatment method in China mainly has AB methods, SBR techniques, oxidation ditch process, MBR techniques, A/O
Technique, A/A/O techniques etc., the shortcomings that all being difficult to overcome in the presence of some, it is embodied in that construction investment is big, operating cost is high, sets
Standby power consumption is big, complex process needs professional to run and safeguard,
For traditional wastewater land treatment systems technique hydraulic load it is relatively low the shortcomings of, China University of Geosciences Zhong Zuosang professor et al.
It is proposed artificial rapid infiltration system.CRI systems develop on the basis of sewage rapid infiltration system and artificial swamp.CRI systems
System by grid pond, preliminary sedimentation tank, ooze pond soon and outlet system forms, in pond is oozed soon, fill by natural sand, Dali stone sand,
The Artificial filtering material that zeolite sand etc. forms by a certain percentage, CRI systems carry out sewage disposal, water using the drive manner of alternation of wetting and drying
The power load cycle is very short, and hydraulic load is 1.0 1 1.5m/d.CRI systems pass through micro- life on filtrate and filtrate surrounding biologic film
Absorption, retention and decomposition of the thing to pollutant in water, realize the purification process to waste water.
Traditional CRI systems only have 30% or so to the clearance of total nitrogen, it is impossible to meet《Urban wastewater treatment firm pollutant
Discharge standard》(GB18918-2002) one-level A targets requirement in.Anaerobism section (denitrification layer) in traditional CRI systems, due to
Hydraulic detention time is shorter, and C/N is not belonging to pool of completely satisfying, it is not thorough that oxyty height causes anti-nitration reaction to carry out than small
Bottom.Nitrification is to change the form of nitrogen in CRI systems, and the organic nitrogen in water inlet and ammonia nitrogen simply are passed through into nitrification
Nitrate nitrogen is converted into, and anti-nitration reaction progress is very insufficient, therefore effectively nitrate nitrogen can not will be changed into nitrogen, forever
Property removed from system, here it is CRI systems ammonia nitrogen removal frank is very high up to more than 80%, and nitrogen removal rate is less than 30%
The reason for.
Nitrifier is autotrophy aerobic bacteria, and growth generation time is long, sensitive to environmental change, slow-growing.It is formed at filtrate
The nitrifier biomembrane on surface is easy to fall off, therefore the recovery of water body ammonia oxidation bacteria function takes long enough.
For traditional CRI systems using biological and abiotic mode to water body dephosphorized, biological mode mainly passes through filter material surface
Phosphorus in water inlet is stored in thalline by the polyP bacteria in biomembrane in the form of polyphosphate, and phosphorus contains in reduction water body
Amount；Abiotic mode is precipitated by being generated in medium containing the phosphate anion reaction in the mineral ions such as iron, aluminium, calcium and water,
Reduce the content of phosphorus in water body.Removal of the CRI systems to phosphorus should be in a manner of abiotic based on, supplemented by biological mode, due to tradition
Filtrate medium in the cations quantity of precipitation reaction occur in and filler few to the adsorption potential of phosphate radical with phosphate radical cause less
It is very low that system obtains dephosphorization efficiency.
Therefore prior art has much room for improvement and developed.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of suitable sewage in expressway service water quality and quantity feature, carry
The system and method for the enhanced type filtration system treatment of sewage in expressway service of the denitrogenation dephosphorizing efficiency of high CRI technologies.
The present invention technical solution be：
A kind of system of enhanced type filtration system treatment of sewage in expressway service, including anaerobic organism pond and enhanced type
Filtration system, anaerobic organism pond is by the sewage after processing, through enhanced type filtration system filtration process；After being handled through anaerobic organism pond
Sewage via cloth tank, water distributor, into nitrification layer, denitrification layer and metalling, flow through the filling filtrate in run-off.
Mulching plant layer on water distributor.
The medium of the plantation layer filling is planting soil, and being planted on planting soil has plant.
The floristics can be the one or more in turfgrass.
The nitrification layer is made up of 20% immobilized nitrobacteria filtrate, 40% river sand and 40% rubble；Described consolidates
Surely change nitrifier filtrate be made up of nitrifier and fixing agent, nitrifier include nitrous acid zygosaccharomyces, nitrous acid Helicobacterium,
One or more in nitrous acid Coccus, nitric acid Bacillus, nitric acid Spirillum, nitric acid Coccus.
Nitrifier is the microorganism species with ammoxidation function, and this kind of quasi-microorganism is that autotrophy aerobic can be by NH4
+-N is oxidized to a NO2--N and NO3--N quasi-microorganism
Curing agent is polyvinyl alcohol or sodium alginate or polyacrylamide.
The denitrification layer is made up of 20% slow-release nutrient filtrate, 40% river sand and 40% rubble；The sustained release battalion
Support filtrate to be made up of macromolecular carbon source and fixing agent, carbon source can be starch, wood chip, rice husk, bagasse, PLA or acetic acid
Ester starch；Curing agent is polyvinyl alcohol, sodium alginate or polyacrylamide.
The filtrate is that 40% sponge iron and 60% rubble form, 2~4mm of sponge iron particle diameter.
A kind of method of enhanced type filtration system treatment of sewage in expressway service, comprises the following steps；S1：Enhanced type
Filtration system filtration process anaerobic organism pond is by the sewage after processing；
S2：Sewage after the processing of anaerobic organism pond flows through cloth tank successively, water distributor, into nitrification layer, denitrification layer and
Metalling, finally flow through the filling filtrate in run-off.
Artificial rapid diafiltration unit hydraulic load is 1m/d；Water distribution manner uses alternation of wetting and drying water distribution, daily water distribution 4 times,
In 6 hours water distribution cycles, per time water time 1h, fall the dry 5 hours time.
Beneficial effects of the present invention：
The suitable sewage in expressway service water quality and quantity feature of the present invention, improve the denitrogenation dephosphorizing efficiency of CRI technologies, place
Water quality after reason meets《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) one-level A standards, Ke Yizuo in
For Expressway Service Treated sewage reusing.This method construction cost is low, and maintenance management is convenient, beautifies the environment, suitable for public at a high speed
Road service area.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention；
Fig. 2 is Fig. 1 longitudinal sectional views.
Embodiment
Embodiment：
Refering to Fig. 1 and Fig. 2, the present invention carries for the sewage feature and the deficiencies in the prior art of Expressway Service
A kind of sewage water treatment method for Expressway Service is supplied.This method is adapted to sewage in expressway service water quality and quantity
Feature, the denitrogenation dephosphorizing efficiency of CRI technologies is improved, the water quality after processing meets《Urban wastewater treatment firm pollutant emission standard》
One-level A standards in GB18918-2002, Expressway Service Treated sewage reusing can be used as.This method construction cost is low, safeguards
Management is convenient, beautifies the environment, suitable for Expressway Service.
The present invention relates to a kind of method of enhanced type filtration system treatment of sewage in expressway service and application, whole system
System is divided into anaerobic organism pond 1 and enhanced type filtration system 2, and anaerobic organism pond 1 is by the sewage after processing, through enhanced type filtration system
2 filtration process；Enhanced type filtration system 2, the sewage after anaerobic organism pond 1 is handled enter via cloth tank 2-1, water distributor 2-2
Enter to nitrify layer 2-4, denitrification layer 2-6 and metalling 2-8, flow through the filling filtrate 2-10 in run-off 2-9.On water distributor 2-2
Mulching plant layer 2-3；Plantation layer 2-3 thickness is 130mm, and the medium of filling is planting soil, and being planted on planting soil has plant, plant species
Class can be the one or more plant groups of turfgrass such as annual bluegrass, fescue grass, rye grass, creeping bentgrass, Bermuda grass, bromegrass and alkali thatch etc.
Into.
The present invention uses immobilized nitrobacteria filtrate, and nitrifier is fixed in the porous media being made up of polymer, gives up
Ammonia nitrogen in water can be nitroso nitrogen and nitrate by the oxidation by nitrobacteria that the space of filtrate is fixed.Filter material surface will not
Form biomembrane, the nitrification bacteria concentration being fixed in filtrate will not be reduced the competition of heterotroph in by waste water, ensured and be
System removes the stabilization of ammonia nitrogen in waste water.
Nitrification layer 2-4 is made up of 20% immobilized nitrobacteria filtrate 2-5,40% river sand and 40% rubble；Immobilization
Nitrifier filtrate 2-5 is made up of nitrifier and fixing agent.The nitrifier of the present invention can be nitrous acid zygosaccharomyces, nitrous acid
Helicobacterium, nitrous acid Coccus, nitric acid Bacillus, nitric acid Spirillum, nitric acid Coccus etc., still, the present invention are mainly emphasized
The microorganism species with ammoxidation function, this kind of quasi-microorganism is that NH4+-N can be oxidized to NO2--N by autotrophy aerobic
With a NO3--N quasi-microorganism；Curing agent can be polyvinyl alcohol, sodium alginate, polyacrylamide；
Nitrogen mainly exists in the form of nitrate nitrogen in artificial rapid infiltration system water outlet, denitrification intensity in whole system
Not enough cause that water outlet ammonia-nitrogen content is low and total nitrogen content is high, both total nitrogen removal efficiency was not high.This patent sets up run-off to increase
The length of anaerobism section, completely full pool environment is built for denitrification layer, reduces anaerobism section oxyty.Run-off 2-9 water outlet water
Position is equal with denitrification layer 2-6 water levels, and it is anaerobic environment to make denitrification layer 2-6, improves nitrogen removal rate；
Denitrification layer C/N ratios are improved by the way of slow-release nutrient filtrate, intensified anti-nitrated effect, system total nitrogen is improved and goes
Except efficiency.Denitrification layer 2-6 is made up of 20% slow-release nutrient filtrate 2-7,40% river sand and 40% rubble；Slow-release nutrient is filtered
Material 2-7 is made up of macromolecular carbon source and fixing agent, and carbon source can be starch, wood chip, rice husk, bagasse, PLA, acetate shallow lake
Powder；Curing agent can be polyvinyl alcohol, sodium alginate, polyacrylamide；
Filtrate 2-10 is that 40% sponge iron and 60% rubble form, 2~4mm of sponge iron particle diameter.Phosphorus occurs altogether with cation
Precipitation is the deciding factor that phosphorus is able to remove from sewage, and this depends primarily on adsorption capacity of the filler to phosphorus element, and phosphoric acid
The adsorption potential and filler cationic species and content of root then determine adsorption capacity of the filler to phosphorus.Sponge iron is metal and tool
There is loose structure, specific surface area is big, there is larger adsorption capacity to pollutant.Phosphate anion can with sponge iron in water it is electric
The Fe3+ generation deposit ferric phosphates separated out, increase the adsorption effect to phosphorus.Sponge iron can be as dephosphorization in water process
Preferable filtrate.
The removal of nitrogen is mainly acted on by nitrification and denitrification and realized in CRI systems.By to CRI system periodicity cloth
Water, strengthen filtrate medium reoxygenation ability, make nitrification abundant, ammonium nitrogen in sewage is converted into nitrate nitrogen.Handed over using dry and wet
For water distribution, the removal of ammonia nitrogen in sewage takes place mostly in enhanced type filtration system 2 and falls aerobic band caused by dry spell, daily water distribution 4
It is secondary, in 6 hours water distribution cycles, per time water time 1h, fall the dry 5 hours time；The hydraulic load of artificial rapid diafiltration unit 2 is 1m/
d。
In the description of this specification, the description of term " one embodiment " etc. means that combining the embodiment or example describes
Specific features, structure, material or feature be contained in the present invention at least one embodiment or example in.In this manual,
Identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the specific features of description, knot
Structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
1. a kind of system of enhanced type filtration system treatment of sewage in expressway service, including anaerobic organism pond and enhanced type ooze
Filter system, it is characterised in that：Anaerobic organism pond is by the sewage after processing, through enhanced type filtration system filtration process；Given birth to through anaerobism
Sewage after the processing of thing pond water distributor, into nitrification layer, denitrification layer and metalling, is flowed through in run-off via cloth tank
Fill filtrate.
2. the system of enhanced type filtration system treatment of sewage in expressway service according to claim 1, its feature exist
In：Mulching plant layer on water distributor.
3. the system of enhanced type filtration system treatment of sewage in expressway service according to claim 2, it is characterised in that：
The medium of the plantation layer filling is planting soil, and being planted on planting soil has plant.
4. the system of enhanced type filtration system treatment of sewage in expressway service according to claim 2, it is characterised in that：
The floristics can be the one or more in turfgrass.
5. the system of enhanced type filtration system treatment of sewage in expressway service according to claim 1, it is characterised in that：
The nitrification layer is made up of 20% immobilized nitrobacteria filtrate, 40% river sand and 40% rubble；Described immobilization nitrification
Bacterium filtrate is made up of nitrifier and fixing agent, and nitrifier includes nitrous acid zygosaccharomyces, nitrous acid Helicobacterium, nitrous acid ball
One or more in Pseudomonas, nitric acid Bacillus, nitric acid Spirillum, nitric acid Coccus.
6. the system of enhanced type filtration system treatment of sewage in expressway service according to claim 5, it is characterised in that：
Nitrifier is the microorganism species with ammoxidation function, and this kind of quasi-microorganism is that NH4+-N can be oxidized to by autotrophy aerobic
A NO2--N and NO3--N quasi-microorganism.
7. the system of enhanced type filtration system treatment of sewage in expressway service according to claim 1, it is characterised in that：
Curing agent is polyvinyl alcohol or sodium alginate or polyacrylamide.
8. the system of enhanced type filtration system treatment of sewage in expressway service according to claim 1, it is characterised in that：
The denitrification layer is made up of 20% slow-release nutrient filtrate, 40% river sand and 40% rubble；The slow-release nutrient filtrate by
Macromolecular carbon source and fixing agent composition, carbon source can be starch, wood chip, rice husk, bagasse, PLA or acetate starch；Gu
Agent is polyvinyl alcohol, sodium alginate or polyacrylamide.
9. the system of enhanced type filtration system treatment of sewage in expressway service according to claim 1, it is characterised in that：
The filtrate is that 40% sponge iron and 60% rubble form, 2~4mm of sponge iron particle diameter.
A kind of 10. method of enhanced type filtration system treatment of sewage in expressway service, it is characterised in that including following step
Suddenly；S1：Enhanced type filtration system filtration process anaerobic organism pond is by the sewage after processing；
S2：Sewage after the processing of anaerobic organism pond flows through cloth tank successively, water distributor, into nitrification layer, denitrification layer and rubble
Layer, finally flows through the filling filtrate in run-off.
11. the method for enhanced type filtration system treatment of sewage in expressway service according to claim 10, its feature
It is, artificial rapid diafiltration unit hydraulic load is 1m/d；Water distribution manner uses alternation of wetting and drying water distribution, daily water distribution 4 times, water distribution
In 6 hours cycles, per time water time 1h, fall the dry 5 hours time.
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Cited By (2)
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| CN108795922A (en) * | 2018-05-24 | 2018-11-13 | 博元生态修复（北京）有限公司 | It is a kind of to be used to handle microbial immobilized microbial inoculum of high-nitrogen waste water and preparation method thereof |
| CN110498509A (en) * | 2019-08-22 | 2019-11-26 | 广西师范大学 | A kind of high ammonia nitrogen sewage treatment unit and the method using its progress sewage treatment |
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Application publication date: 20180105 |