CN105174626A - Constructed wetland coupled biological reaction tank purification water-gas system - Google Patents
Constructed wetland coupled biological reaction tank purification water-gas system Download PDFInfo
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- CN105174626A CN105174626A CN201510600120.XA CN201510600120A CN105174626A CN 105174626 A CN105174626 A CN 105174626A CN 201510600120 A CN201510600120 A CN 201510600120A CN 105174626 A CN105174626 A CN 105174626A
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- reaction tank
- biological reaction
- artificial swamp
- aeration
- constructed wetland
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Abstract
The invention provides a constructed wetland coupled biological reaction tank purification water-gas system, and belongs to the field of environmental protection. The constructed wetland coupled biological reaction tank purification water-gas system comprises a biological reaction tank, a settling tank and a constructed wetland. The biological reaction tank is combined with the constructed wetland, the biological reaction tank is made to be a sealing system, offgas produced after aeration is introduced into the constructed wetland through an air pump, oxygen supply of the constructed wetland is increased, the waste water treatment effect is enhanced, the plant growth is facilitated, and the pollution risk caused by the offgas is eliminated.
Description
One, technical field
The invention belongs to field of environment protection, relate to a kind of artificial swamp-biological reaction tank coupling system processing waste gas and advanced treatment of waste water.
Two, background technology
At present, municipal sewage treatment is main mainly with biological process, comprises activated sludge process, biological filter, blodisc, stabilization pond etc., and it processes the pollution substance such as nitrogen, phosphorus of still remaining higher concentration in rear water outlet.Be rich in nitrogen in a large number, the sewage disposal plant effluent of phosphorus directly enters river, cause surface water pollution and lake eutrophication.
For further lifting sewage treatment effect, the technology such as normal employing absorption, photodegradation, membrane filtration, microwave and advanced oxidation carry out deep purifying to sewage disposal plant effluent, but the application of these technology all exists the limitation such as investment operation cost is high, operational administrative is complicated.Artificial swamp, as a kind of ecological wastewater processing technology, has the advantage such as capital construction and the low and convenient management of working cost, ecoscape can be reproduced simultaneously, improve weather, promote the benign cycle of ecotope, in lifting sewage treatment plant effluent quality, have good development prospect.
But along with progressively adding of pollution discharge standard is tight, the difficult problems such as Traditional Man wetland ecotourism nitric efficiency is low, sustainable operation poor stability are more outstanding, have impact on its popularizing application prospect.Traditional Man wetland is higher for the removal efficiency of TSS, organic pollutant, but lower for the ability that removes of nitrogen.Dissolved oxygen is under-supply is the main reason causing wetland nitric efficiency poor, and therefore, improving its content dissolved oxygen environment is regulation and control artificial swamp nitration reaction process, and then the key point of enhanced biological nitrogen removal effect.
In traditional biological sewage treatment process, aeration cost often account for sewage treatment process running cost 30 ?60%.At present, after aeration, tail gas is generally directly discharged in ambient atmosphere environment, has both caused the huge waste of resource and the energy, can produce peculiar smell and microbial aerosol again, affect environment, be detrimental to health.To be used for artificial swamp reoxygenation after exhaust collection, both can realize the utilization of waste gas, the filteration again by Wetland Substrate removes the peculiar smell of tail gas and microbial aerosol, the more important thing is can strengthened artificial wet land to the removal effect of pollutent.
Research shows, carries out oxygenation can significantly improve Constructed Wetland For Purifying usefulness to artificial swamp, simultaneously also effective enhanced system capacity of resisting impact load, up to the present, does not utilize biological sewage process tail gas artificial swamp to be carried out to the example of oxygenation.
Three, summary of the invention
In order to overcome the deficiencies in the prior art part, the present invention proposes that a kind for the treatment of effect is good, less investment, be easy to manage and operation, process waste gas and deep purification of wastewater artificial swamp coupling biological reaction tank purification water gas system.
The present invention is achieved through the following technical solutions: artificial swamp coupling biological reaction tank purification water gas system, comprise biological reaction tank, settling tank and artificial swamp, artificial swamp comprises a body, timing controller, off-gas pump, aeration emery disc, sandy soils.Wetland bed body makes rectangular parallelepiped, the biological reaction tank of this artificial swamp coupling biological reaction tank purification water gas system is set to the system of a sealing, biological reaction tank top is provided with aeration tube and escape pipe, the side of biological reaction tank is provided with water inlet pipe, opposite side is provided with water shoot, wherein water shoot communicates with settling tank, settling tank communicates with artificial swamp water inlet pipe, one end of aeration tube is connected with air compressor by airway, and escape pipe is communicated with the aeration emery disc bottom artificial swamp by air pump.
Sewage enters biological reaction tank from water inlet pipe, through the process of microorganism nitration denitrification, then flow to settling tank through rising pipe, after oettIed sewage enters artificial swamp, the microorganism of artificial swamp and waterplant carry out deep purifying process to sewage, and the water after process is discharged by rising pipe.
The present invention has the following advantages: biological reaction tank and artificial swamp combine by the present invention, carries out intensive treatment to sewage, and effluent quality is good; The tail gas that produces after biological reaction tank aeration is introduced artificial swamp by the present invention, has both enhanced the Pollution risk that artificial swamp oxygen supply and plant-growth turn eliminate tail gas.
Water outlet after biological reaction tank process, by the advanced treatment of drowned flow artificial wet land or surface flow artificial marshland, the clearance of COD, ammonia nitrogen, TP can reach 88-95%, and water outlet meets earth's surface V class water quality standard.System Nitrogen/Phosphorus Removal in each season is good.Composition analysis is carried out to biological reaction tank tail gas and artificial swamp tail gas, mainly comprises: CO
2, CH
4, N
2o, H
2s, VOC, microbial aerosol, result display artificial swamp tail gas pollution substrate concentration is significantly less than biological reaction tank tail gas, shows that artificial swamp has good cleaning action to tail gas.
Four, accompanying drawing explanation
Fig. 1 is the structural representation of drowned flow artificial wet land coupling biological reaction tank of the present invention purification water gas system;
Fig. 2 is the structural representation of surface flow artificial marshland coupling biological reaction tank of the present invention purification water gas system;
In figure: 1 is water inlet pipe, 2 is biological reaction tank, and 3 is air compressor, 4 is aeration tube, and 5 is escape pipe, and 6 is rising pipe, 7 is air pump, and 8 is wetland plant, and 9 is wetland effluent mouth, 10 is wetland bed body, 11 is sandy soils, and 12 is stone layer, and 13 is aeration emery disc, 14 is wetland water-in, and 15 is settling tank.
Five, specific embodiment
Embodiment 1
As shown in Figure 1, purification water gas system of the present invention is made up of biological reaction tank 2 and artificial swamp 10 two portions.The housing of biological reaction tank 2 is by the material construction such as PVC or concrete, biological reaction tank 2 is tightness systems, aeration tube 4 and escape pipe 5 is provided with at its top, wherein one end of aeration tube 4 is connected with air compressor 3 by airway, carry out aeration to biological reaction tank, escape pipe 5 is communicated with the aeration emery disc 13 bottom artificial swamp by air pump 7 on time.Be provided with water inlet pipe 1 and rising pipe 6 from bottom to top at biological respinse pool wall, wherein rising pipe 6 communicates with settling tank 15, and the supernatant that goes out after precipitation enters artificial swamp by wetland water-in 13.
Constructed wetland bed body 10 front-end and back-end have water inlet pipe 14 and rising pipe 9 respectively.Bed body 10 is made up of PVC material, and lay the stone layer 12 of 5cm-8cm and the sandy soils 11 of 50-70cm bottom bed body from bottom to top, sandy soils 11 is thin river sand, plants emergent 8 above.Lay aeration emery disc 13 bottom bed body 10, by air pump 7, the waste gas after aeration in biological reaction tank 2 is introduced artificial swamp, carry out aeration oxygen replenishing.
The carrying out practically mode of above-mentioned artificial swamp coupling biological reaction tank synchronous purification water gas system is:
First sewage enter biological reaction tank 2 by water inlet pipe 1, sewage enters settling tank 15 in the water outlet of bleeding stage by rising pipe 6 after biological reaction tank process, flow to artificial swamp to prevent mud to result in blockage, sewage precipitates at settling tank 15, supernatant liquor enters artificial swamp 10 by wetland water-in 14, the matrix of artificial swamp provides growing environment for microorganism, and the pollutent such as nitrogen, phosphorus is further by absorption degradation.Wetland plant 8 Absorbable rod nitrogen, phosphorus, as idiotrophic material, carry out intensive treatment to sewage.Water after system process is discharged by wetland effluent mouth 9.In biological reaction tank operational process, one end of aeration tube 4 is connected with air compressor 3 by airway, carry out aeration oxygen replenishing on time, one end of air pump 7 is connected with biological reaction tank air outlet 5 by airway simultaneously, the other end is connected with the aeration emery disc 13 bottom artificial swamp by airway, the waste gas that such biological reaction tank produces is imported into artificial swamp and carries out aeration oxygen replenishing, improves the clearance of artificial swamp to pollutent nitrogen, phosphorus.
Embodiment 2
Identical with embodiment 1, difference is the drowned flow artificial wet land coupling biological reaction tank purification water gas system set up, and biological reaction tank adopts synthetic glass material, and useful volume is 15L, and virtual height is 30cm, and internal diameter is 25cm, cylindrical make cylindric; Drowned flow artificial wet land area is 0.25m × 0.25m, high 0.6m, wet land filler layer thickness is 50cm, aeration emery disc is laid in bottom, in order to prevent aeration emery disc from blocking, sets particle diameter as the stone of 3-4cm on aeration emery disc upper berth, stone layer thickness is 5cm, it covers the thick thin river sand of 45cm, wetland surface grafting reed, by air pump, biological reaction tank tail gas is introduced artificial swamp and carry out aeration oxygen replenishing.
Embodiment 3
Structure and the operation scheme of the present embodiment are substantially the same manner as Example 2, what the two difference was that this example builds is surface flow artificial marshland, the sewage of settling tank delivers to surface flow artificial marshland by pipeline peristaltic pump, as shown in Figure 2, surface flow artificial marshland area is 0.45m × 0.22m, high 0.65m, and wet land filler layer thickness is 35cm, depth of water 25cm, lays aeration emery disc on matrix top layer.
Biological reaction tank and artificial swamp combine by the present invention, carry out intensive treatment to sewage, and effluent quality is good; Meanwhile, the tail gas after biological reaction tank aeration is collected and passes into artificial swamp, strengthened artificial wet land effects of purification quality, Promoting plant growth, utilizes the filtration, purification effect of artificial swamp to eliminate peculiar smell in tail gas and Aerosol Pollution.
Claims (1)
1. artificial swamp coupling biological reaction tank purification water gas system, comprise biological reaction tank, settling tank and artificial swamp, artificial swamp comprises a body, timing controller, off-gas pump, aeration emery disc, sandy soils.Wetland bed body makes rectangular parallelepiped, it is characterized in that the biological reaction tank of this artificial swamp coupling biological reaction tank purification water gas system is set to the system of a sealing, biological reaction tank top is provided with aeration tube and escape pipe, the side of biological reaction tank is provided with water inlet pipe, opposite side is provided with water shoot, wherein water shoot communicates with settling tank, settling tank communicates with artificial swamp water inlet pipe, aeration oxygen replenishing is carried out in order to biological reaction tank tail gas is introduced artificial swamp, one end of aeration tube is connected with air compressor by airway, escape pipe is communicated with the aeration emery disc bottom artificial swamp by air pump.
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| CN201510600120.XA CN105174626A (en) | 2015-09-18 | 2015-09-18 | Constructed wetland coupled biological reaction tank purification water-gas system |
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| CN201510600120.XA CN105174626A (en) | 2015-09-18 | 2015-09-18 | Constructed wetland coupled biological reaction tank purification water-gas system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381779A (en) * | 2017-09-01 | 2017-11-24 | 上海理工大学 | A kind of saprobia electro photoluminescence processing and tail gas synergy wetland purification system |
| CN111115981A (en) * | 2020-01-20 | 2020-05-08 | 上源环工生态环境科技(苏州)有限公司 | Resource regeneration type constructed wetland system |
| CN111470708A (en) * | 2020-04-02 | 2020-07-31 | 上海梵煦环境科技有限公司 | Method for treating environmental-protection active sludge sewage |
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| CN103304109A (en) * | 2013-07-09 | 2013-09-18 | 天津中天海盛环保科技有限公司 | Hospital wastewater treatment process equipment and hospital wastewater treatment method |
| CN103880193A (en) * | 2014-04-08 | 2014-06-25 | 北京师范大学 | Method for treating wastewater from livestock and poultry breeding by constructing vertical flow artificial wetland based on water supply plant sludge |
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Patent Citations (6)
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|---|---|---|---|---|
| CN101691267A (en) * | 2009-09-18 | 2010-04-07 | 苏州科技学院 | Air lift and return integrated sewage treatment device |
| CN102583902A (en) * | 2012-03-08 | 2012-07-18 | 杭州云溪环保科技有限公司 | Treatment system for comprehensive utilization of rural sewage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107381779A (en) * | 2017-09-01 | 2017-11-24 | 上海理工大学 | A kind of saprobia electro photoluminescence processing and tail gas synergy wetland purification system |
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| CN111115981A (en) * | 2020-01-20 | 2020-05-08 | 上源环工生态环境科技(苏州)有限公司 | Resource regeneration type constructed wetland system |
| CN111470708A (en) * | 2020-04-02 | 2020-07-31 | 上海梵煦环境科技有限公司 | Method for treating environmental-protection active sludge sewage |
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Application publication date: 20151223 |