CN104828946B - A kind of intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system - Google Patents
A kind of intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system Download PDFInfo
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- CN104828946B CN104828946B CN201510258381.8A CN201510258381A CN104828946B CN 104828946 B CN104828946 B CN 104828946B CN 201510258381 A CN201510258381 A CN 201510258381A CN 104828946 B CN104828946 B CN 104828946B
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Abstract
The invention discloses a kind of intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system, the living things catalysis filler subsurface wastewater infiltration system is made up of aerobic system, anaerobic system, water inlet system, outlet system and micro- aerating system, the top of living things catalysis filler subsurface wastewater infiltration system is aerobic system, bottom is anaerobic system, aerobic system is provided with coating, and aerobic system is followed successively by gravel layer a, first filter layer, composite earth layer a, zeolite layer from top to bottom.The present invention develops a kind of new living things catalysis filler, integrates various functions such as microbial bacterial agent, slow release carbon source, catalytic reduction, dephosphorization, and the denitrogenation dephosphorizing ability of system is enhanced significantly；The present invention is provided with impermeable stratum, makes aerobic system relatively independent with anaerobic system.When can avoid the micro- aeration of aerobic system, the anaerobic environment needed for destruction denitrification, the removal effect excellent to total nitrogen so as to ensure that system.
Description
Technical field
The invention belongs to decentralized type sewage process field, disclose a kind of intensified anti-nitrated living things catalysis filler underground and ooze
Filter system.It is made up of aerobic system, anaerobic system, water inlet system, outlet system and micro- aerating system.Top is aerobic system
System, is followed successively by gravel layer, first filter layer, composite earth layer a, zeolite layer from top to bottom.Lower anaerobic system is compound hydraulic flow state, is pressed
It is divided into three modules, respectively living things catalysis filler, composite earth layer b, gravel layer according to water (flow) direction.The present invention is by relatively independent
Anaerobic system and the living things catalysis filler-reinforced denitrification stage, improve removal ability of the system to total nitrogen, be not required to additional
Carbon source and layering are intake, and with simple structure, disposal ability is strong, is not easily blocked, and Construction and operation low cost is excellent without mosquitos and flies stink etc.
Point.
Technical background
China's town sewage focuses on technology and tends to ripe, and up to more than 80%, this depends on costly wastewater treatment rate
High drainage pipeline networks construction.And it is located at the drainings such as more remote cities and towns suburb, rural area, Scenic Spot Area, Expressway Service
The area that pipe network is not covered, the key factor of the discharge as water environment pollution of its sanitary sewage.What sewage treatment plant commonly used
Biologic treating technique such as A2The techniques such as/O, oxidation ditch, often invest big, power consumption height, need special messenger's maintenance management, are not suitable for small rule
Mould, distributed sewage disposal.
Subsurface wastewater infiltration system is a kind of ecological engineering technology suitable for decentralized type sewage treatment, and sewage is in soil-micro- life
Under the collective effect of thing, it is purified by processes such as physical absorption, chemical precipitation, microbial degradations.Subsurface infiltration technology has
There are capital construction and operating cost low, almost maintenance-free advantage, and whole system is embedded in underground, without mosquitos and flies stink, does not influence ground
The use function in face, the insulation effect of soil layer causes that system in the winter time also can stable operation.But due to traditional subsurface infiltration
The packing layer based on soil and sand being used technology, load is low, TN clearances are low, susceptible to plugging to there are problems that treatment more.
The patent of invention of Publication No. CN104193084A the multistage intake by way of, for denitrification provides carbon source,
So as to improve nitric efficiency.But when system bottom enters raw sewage, because denitrification is anaerobic environment, the nitre of ammonia nitrogen in sewage
Change effect is restricted, and water outlet ammonia nitrogen concentration may be caused higher.The patent of invention of Publication No. CN101284699A uses bottom
The mode of portion's aeration, although improve system and load is processed to organic matter, enhance system anti-clogging ability, but water outlet nitre state
Nitrogen content is high, increases aeration and virtually destroys anaerobic environment, it is suppressed that denitrification so that clearance of the system to total nitrogen
It is relatively low.
In a word, although at present subsurface infiltration technology although take forced aeration and stage by stage intake etc. measure improve system
Treatment load, but total nitrogen removal efficiency is still difficult to improve, be primarily due to denitrification and be suppressed, probably have following
The reason for several aspects：（1）Carbon source is not enough；（2）Lack anaerobic environment；（3）Denitrifying bacterium lazy weight.
The content of the invention
The technical problem to be solved in the present invention is that subsurface infiltration technology is difficult to improve to nitrogen removal rate, and the present invention is by right
Filler is improved, and develops a kind of living things catalysis filler, and filler not only contains a large amount of denitrification floras, and can constantly discharge
Carbon source needed for denitrification, at the same can also catalytic reduction reaction carrying out, improve treatment load, anti-clogging, reducing energy consumption.This hair
The bright improvement by subsurface wastewater infiltration system, makes aerobic system and anaerobic system relatively independent, it is ensured that detesting needed for denitrification
Oxygen environment.
The technical scheme is that：A kind of intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system, the biology
Catalytic filler subsurface wastewater infiltration system is made up of aerobic system, anaerobic system, water inlet system, outlet system and micro- aerating system,
The top of living things catalysis filler subsurface wastewater infiltration system is aerobic system, and bottom is anaerobic system, and aerobic system is provided with coating,
Aerobic system is followed successively by gravel layer a, first filter layer, composite earth layer a, zeolite layer from top to bottom, and anaerobic system is from water inlet end to draining
End horizontal direction is followed successively by living things catalysis packing layer, composite earth layer b, gravel layer b, and water inlet system is by being uniformly arranged on gravel layer a
Perforated pipe composition, outlet system is located at the top of gravel layer b, and micro- aerating system 12 is located in zeolite layer.
The aerobic system and anaerobic system are separated by impermeable stratum, make aerobic system relative with anaerobic system only
It is vertical, it is ensured that the anaerobic environment needed for denitrification.
By particle diameter for 5-20mm gravels are constituted, the thickness of gravel layer a is 10-15cm, the water inlet system to the gravel layer a
By being uniformly laid in gravel layer perforated pipe；By particle diameter for 0.5-2mm coarse sands are constituted, the thickness of first filter layer is 10- to the first filter layer
15cm。
The composite earth layer a is by slag and in-situ soil by volume 1:1 mixes, and the thickness of composite earth layer a is 30-
50cm。
The zeolite layer is by particle diameter for the zeolite of 5-15mm is constituted.
The thickness of the anaerobic system in the vertical direction is 20-40cm, and the width of horizontal direction in anaerobic system is biological
The width of catalytic filler layer is 0.5-5m, the width of composite earth layer b is 0.5-5m, the width of gravel layer b is 0.2-0.5m.
The living things catalysis packing layer mixes system with in-situ soil by activated sludge, chicken manure, stalk or rice husk, slag, iron filings
Into volume fraction is：Activated sludge 1-3%, human and animal excreta 1-3%, rice husk 1-10%, slag 20-40%, iron filings 0.5-3%, surplus
It is in-situ soil.
Current in the living things catalysis packing layer flow into composite earth layer b, and current flow into gravel layer b in composite earth layer b.
The living things catalysis filler subsurface wastewater infiltration system alternation of wetting and drying operation, psychrometric ratio is 6:1-2:1,3-6 of intaking daily
It is secondary, every time after water inlet 0.5-1h, start micro- aerating system 0.5-2h.
The thickness of the living things catalysis filler subsurface wastewater infiltration system is 20-40cm.
The beneficial effects of the invention are as follows：
（1）The present invention develops a kind of new living things catalysis filler, collection microbial bacterial agent, slow release carbon source, the anti-nitre of catalysis
Various functions such as change, dephosphorization are integrated, and the denitrogenation dephosphorizing ability of system is enhanced significantly；
（2）The present invention is provided with impermeable stratum, makes aerobic system relatively independent with anaerobic system.Aerobic system can be avoided micro-
During aeration, the anaerobic environment needed for destruction denitrification, the removal effect excellent to total nitrogen so as to ensure that system；
（3）The present invention extends the time of contact of sewage and filler using compound hydraulic flow state design, reduces underground and oozes
The depth of filter system, structure is simpler, and construction is more convenient；
（4）The present invention uses micro- aerating system, improves the treatment load of system to greatest extent with minimum energy consumption, prevents
Filler blocking is stopped；
（5）The present invention using zeolite as supporting layer, both can be with the ammonia nitrogen in absorption effluent, and zeolite rough porous
Surface can repeatedly be cut to the air from aeration tube again, play uniform gas distribution, improve the effect of mass-transfer efficiency；
（6）Using automatic control system, operational management is simple, is safeguarded without special messenger.
Zhengzhou community life sewage is taken, water quality is as follows：
| Project | COD | TN | TP | ||
| Water inlet（mg/L） | 207-325 | 131-197 | 19-32 | 25-39 | 3-6 |
| Water outlet（mg/L） | 19-35 | 3-7 | 1.6-3.4 | 4-8 | 0.08-0.21 |
| Average removal rate | 90% | 95% | 88% | 82% | 98% |
Water outlet is better than《Urban wastewater treatment firm pollutant emission standard GB18918-2002》One-level A class discharge standards.
Brief description of the drawings
Fig. 1 is a kind of structural representation of intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system of the present invention.
Specific embodiment
Intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system by aerobic system, anaerobic system, water inlet system 10, go out
Water system 11 and micro- aerating system 12 are constituted, and aerobic system and anaerobic system are separated by impermeable stratum 9.Top is aerobic
System, filler is followed successively by gravel layer a 2, first filter layer 3, composite earth layer a 4, zeolite layer 5 from top to bottom, and bottom is anaerobic system,
It is divided into three modules according to water (flow) direction, filler is followed successively by living things catalysis packing layer 6, answers from water inlet end to discharge ends horizontal direction
Soil layer b 7, gravel layer b 8 is closed, is coating 1 on aerobic system, coating is original position soil layer or hardening of cement layer, ground
Can prevent weight from rolling as greening, park or other purposes.Subsurface wastewater infiltration system both sides and bottom are carried out at antiseepage
Reason.Water inlet system is made up of the perforated pipe for being uniformly arranged on gravel layer a
Raw sewage enters regulation sedimentation basin by grid, removes the suspended contaminant of bulky grain, then fixed by submersible sewage pump
When pump sewage into the filler-reinforced denitrifying subsurface wastewater infiltration system of living things catalysis.
Raw sewage initially enters aerobic system, and water distribution uniformity is carried out by the perforation water distributor being located in gravel layer a, passes through
The aproll effect of gravel layer a is uniformly distributed again, downwards by the suspended particulate substance in first filter layer retention sewage, by composite earth layer
A, under aerobic microbiological effect, carries out the absorption degradation of organic matter, during organic nitrogen becomes ammonia nitrogen, and sewage under ammoniation
Ammonia nitrogen together aerobic nitrification effect under become nitrate nitrogen/nitrite nitrogen, untreated ammonia nitrogen can also be carried out in zeolite layer
Further absorption nitrification.Then sewage is downwardly into anaerobic system denitrification zone, under living things catalysis filler effect, rich in nitre
The sewage of state nitrogen carries out denitrification, and synchronous dephosphorization herein, further completes the degraded to organic matter, then by composite earth layer
B carries out fine filtering, is finally discharged by the perforation collector pipe in gravel layer b, and water outlet is discharged better than GB18918-2002 one-level A classes
Standard.
The system alternation of wetting and drying runs, and psychrometric ratio is 6:1 to 2:1, water inlet 3-6 times daily every time after water inlet 0.5-1h, is opened
Micro- aerating system 0.5-2h is moved, the boring aeration pipe in air to zeolite layer is conveyed by low power air blower, system is entered
The micro- oxygen supply of row.Air can be cut into minute bubbles by porous zeolite and composite earth layer a around boring aeration pipe, increase gas and water,
Gu between mass-transfer efficiency, microorganism is made full use of oxygen degradation pollutant.Micro- aerating system is not only dirty microbial degradation
Dye thing provides sufficient oxygen, improves the oxidability of aeration tube area above, greatly improves the treatment load of filtration system,
And the accumulation of organic particulate matter is avoided, enhance the anticlogging ability of system.Micro- aerating system starts after water inlet, with routine
Aeration process is compared, and aeration rate is small, aeration time is short, oxygen utilization rate is high, reduces power consumption.
But aeration can destroy the anaerobic environment of system bottom, cause denitrification to be suppressed.Therefore in aerobic system
Impermeable stratum is set between system and anaerobic system, two systems can not be joined directly together, but communicated in side.So limit significantly
Air enters anaerobic system, it is ensured that denitrifying be smoothed out.
The living things catalysis filler is uniform with in-situ soil by a certain percentage by activated sludge, chicken manure, rice husk, slag, iron filings
Mix.Activated sludge mainly provides denitrifying bacteria, shortens the startup time of filtration system denitrification.Chicken manure is
Denitrification provides initial stage degradable carbon source.On the one hand rice husk or corncob can prevent filler from blocking up as the leavening agent of filler
Plug；On the other hand cellulose is rich in, its organic matter gradually decomposes dissolution under anaerobic, can be used as the permanent sustained release carbon of system
Source.The carbon of remaining can occur micro-electrolysis reaction with iron filings in slag, and promotion is denitrifying to be carried out, and slag surface rough porous,
Be conducive to denitrifying bacterium apposition growth.Slag is in alkalescent simultaneously, also for denitrification provides advantage.It is rich in slag
Oxide containing Ca, Al, can synchronously remove the phosphorus in sewage.
The design of anaerobic system combines level stream, upward flow, lower to stream using compound hydraulic flow state, not only makes filler
Sufficiently contacted with sewage, the length of filler can also be made to expand in the horizontal direction, reduced the thickness of filler, reduced
The depth of subsurface wastewater infiltration system, constructs more simple and easy to apply.
Delivery port is located at the top of anaerobic system, it is to avoid current short circuit, whole anaerobic system is in Riddled Condition,
So as to ensure the anaerobic environment needed for denitrification.
The packing layer of aerobic system is laid according to the order that from top to bottom, infiltration coefficient is sequentially reduced, the suspension in sewage
Particulate matter is retained successively according to the descending order of particle diameter, it is to avoid is formed congestion on filler surface, is caused surface to block, causes
Lower floor's filler can not fully be utilized.Packing layer is respectively from top to bottom：Gravel layer a is made up of 5-20mm gravels, and filling is thick
Degree is about 10-15cm.Water distribution system is uniformly laid in gravel layer a by perforated pipe.First filter layer is 0.5-2mm coarse sand groups by particle diameter
Into filling thickness is about 10-15cm.Composite earth layer a is by slag and original soil by volume 1:1 mixes, and filling thickness is about
30-50cm.Zeolite layer is made up of the zeolite of 5-15mm, and filling thickness is about 10-15cm.The boring aeration pipe of micro- aerating system is equal
It is even to be laid in zeolite layer.
Using zeolite as supporting layer, both can again may be used with the ammonia nitrogen in absorption effluent, and the surface of zeolite rough porous
Repeatedly cut with to the air from aeration tube, played uniform gas distribution, improved the effect of mass-transfer efficiency.
The filler of anaerobic system can be divided into three modules by looking for the order of water (flow) direction.First module is filled out for living things catalysis
Material, is uniformly mixed with in-situ soil by a certain percentage by activated sludge, chicken manure, rice husk, slag, iron filings.Its respective volume hundred
Divide than respectively activated sludge 1-3%, chicken manure 1-3%, rice husk 1-10%, slag 20-40%, iron filings 0.5-3%, in-situ soil 40-75%.
Second module is composite earth layer b by sand and in-situ soil by volume 1:1 mixing composition.3rd module is water outlet gravel layer b by 5-
20mm gravels are constituted, and water outlet collector pipe is located at the top of anaerobic system, in gravel layer b.Anaerobic system filler is in side vertically
Upward thickness is 20-40cm, and the width of the first module living things catalysis filler is 0.5-5m, the width of the second module composite earth layer b
It is 0.5-5m to spend, and the width of the 3rd module gravel layer b is 0.2-0.5m.
The depth of whole subsurface wastewater infiltration system is 0.8-1.4m（Without overburden layer）, the digging depth of engineering is substantially reduced, apply
Work is easier.
Living things catalysis filler is uniformly mixed with in-situ soil by a certain percentage by activated sludge, chicken manure, rice husk, slag, iron filings
Form.Its respective volume percentage is respectively activated sludge 1-3%, chicken manure 1-3%, rice husk 1-10%, slag 20-40%, iron filings
0.5-3%, in-situ soil 40-75%.Various functions such as filler collection microbial bacterial agent, slow release carbon source, catalytic reduction, the dephosphorization are one
Body.
Anaerobic system of the present invention is using compound hydraulic flow state design including level stream, upward flow, lower to stream.According to current
Direction is divided into three modules, and filler is respectively living things catalysis filler, composite earth layer b, gravel layer b so that sewage connects with filler
Touch and expand in the horizontal direction, reduce the digging depth of engineering.
The present invention uses micro- aerating system.Subsurface wastewater infiltration system alternation of wetting and drying runs, and psychrometric ratio is 6:1 to 2:1, enter daily
Water 3-6 times, every time after water inlet 0.5-1h, starts micro- aerating system 0.5-2h.
Chicken manure can be replaced by cow dung, old rice in the present invention；Rice husk can be replaced with corncob, stalk；Slag can use powder
Coal ash, coal gangue subculture are replaced.Iron filings can be replaced with iron powder, Steel-slag.Also a certain amount of plastic filler can be added, as the load of microorganism
Body.Zeolite in supporting layer can be replaced with vermiculite, haydite.
Claims (9)
1. a kind of intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system, it is characterised in that：The living things catalysis filler ground
Lower filtration system is made up of aerobic system, anaerobic system, water inlet system, outlet system and micro- aerating system, and living things catalysis is filled out
The top for expecting subsurface wastewater infiltration system is aerobic system, and bottom is anaerobic system, and aerobic system is provided with coating, and aerobic system is certainly
Gravel layer a, first filter layer, composite earth layer a, zeolite layer are followed successively by under above, anaerobic system is from water inlet end to discharge ends horizontal direction
It is followed successively by living things catalysis packing layer, composite earth layer b, gravel layer b, water inlet system is by being uniformly arranged on the perforated pipe group of gravel layer a
Into outlet system is located at the top of gravel layer b, and micro- aerating system is located in zeolite layer, and the living things catalysis packing layer is by activity
Sludge, chicken manure, stalk or rice husk, slag, iron filings and in-situ soil are mixed, and volume fraction is：Activated sludge 1-3%, chicken manure 1-
3%th, rice husk 1-10%, slag 20-40%, iron filings 0.5-3%, balance of in-situ soil.
2. intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system according to claim 1, it is characterised in that：It is described
Aerobic system and anaerobic system are separated by impermeable stratum.
3. intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system according to claim 1, it is characterised in that：It is described
By particle diameter for 5-20mm gravels are constituted, the thickness of gravel layer a is 10-15cm to gravel layer a, and the water inlet system is by being uniformly laid in
Gravel layer perforated pipe；By particle diameter for 0.5-2mm coarse sands are constituted, the thickness of first filter layer is 10-15cm to the first filter layer.
4. intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system according to claim 1, it is characterised in that：It is described
Composite earth layer a is by slag and in-situ soil by volume 1:1 mixes, and the thickness of composite earth layer a is 30-50cm.
5. intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system according to claim 1, it is characterised in that：It is described
Zeolite layer is by particle diameter for the zeolite of 5-15mm is constituted.
6. intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system according to claim 1, it is characterised in that：It is described
The thickness of anaerobic system in the vertical direction be 20-40cm, the width of horizontal direction in anaerobic system, living things catalysis packing layer
Width is 0.5-5m, the width of composite earth layer b is 0.5-5m, the width of gravel layer b is 0.2-0.5m.
7. intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system according to claim 1, it is characterised in that：It is described
Current in living things catalysis packing layer flow into composite earth layer b, and current flow into gravel layer b in composite earth layer b.
8. intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system according to claim 1, it is characterised in that：It is described
Living things catalysis filler subsurface wastewater infiltration system alternation of wetting and drying runs, and psychrometric ratio is 6:1-2:1, water inlet 3-6 times daily, every time water inlet
After 0.5-1h, start micro- aerating system 0.5-2h.
9. intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system according to claim 1, it is characterised in that：It is described
The thickness of living things catalysis filler subsurface wastewater infiltration system is 20-40cm.
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| CN201510258381.8A CN104828946B (en) | 2015-05-20 | 2015-05-20 | A kind of intensified anti-nitrated living things catalysis filler subsurface wastewater infiltration system |
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| CN106007191A (en) * | 2016-06-27 | 2016-10-12 | 中冶华天工程技术有限公司 | Black odorous river course ecological treatment system and treatment method thereof |
| CN106006973B (en) * | 2016-07-20 | 2020-04-21 | 成都理工大学 | Bottom water inlet type artificial rapid infiltration system |
| CN109867403B (en) * | 2017-12-01 | 2023-09-22 | 中国水利水电科学研究院 | Decentralized sewage treatment device and sewage treatment method |
| CN109665632B (en) * | 2019-02-25 | 2021-08-10 | 张强 | Process for rapidly degrading high-concentration eutrophic sewage |
| CN112390335A (en) * | 2020-11-02 | 2021-02-23 | 广西金妙松环保工程有限公司 | Efficient phosphorus removal filler medium capable of generating micro-potential and preparation method thereof |
| CN114506919A (en) * | 2022-03-08 | 2022-05-17 | 江苏海绵城市技术研究院有限公司 | Efficient purification composite biological filler and preparation method thereof |
| CN115594330B (en) * | 2022-09-16 | 2023-05-30 | 同济大学 | Directly-discharging sewage treatment system for strengthening low carbon nitrogen ratio domestic sewage treatment efficiency |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3623242A1 (en) * | 1985-07-12 | 1987-01-15 | Deutag Mischwerke Gmbh | Process for treating highly polluted and organically degradable nitrogen-rich effluents |
| CN1259259C (en) * | 2004-04-08 | 2006-06-14 | 上海交通大学 | Device of treating depth of sewage for processing layered objective pollutant |
| CN102910740B (en) * | 2012-11-09 | 2014-05-21 | 上海市城市排水有限公司 | System for treating constructed wetland fillers of organic composite slag |
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Inventor after: Wang Min Inventor after: Liu Fentao Inventor after: Lu Xiaoqin Inventor after: Hou Ruibin Inventor after: Ji Yatong Inventor after: Mai Wenning Inventor after: Chen Zhongping Inventor after: Le Jinchao Inventor before: Wang Min Inventor before: Chen Zhongping Inventor before: Lu Xiaoqin Inventor before: Le Jinchao |
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