CN203095790U - Small-sized composite vertical flow integrated system for domestic sewage - Google Patents
Small-sized composite vertical flow integrated system for domestic sewage Download PDFInfo
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- CN203095790U CN203095790U CN 201220726867 CN201220726867U CN203095790U CN 203095790 U CN203095790 U CN 203095790U CN 201220726867 CN201220726867 CN 201220726867 CN 201220726867 U CN201220726867 U CN 201220726867U CN 203095790 U CN203095790 U CN 203095790U
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Abstract
The utility model discloses a small-sized composite vertical flow integrated system for domestic sewage. The system comprises a down-flow device and an up-flow device, wherein the bottom of the down-flow device and the bottom of the up-flow device are communicated with each other, the upper part of the down-flow device is provided with a water inlet, and the upper part of the up-flow device is provided with a water outlet; the down-flow device comprises a soil layer, a haydite layer, a quartz sand layer and a pebble layer which are sequentially arranged from top to bottom; and the up-flow device comprises a soil layer, a gravel layer, a zeolite layer and a pebble and carbon source layer which are sequentially arranged from top to bottom. Plants of the soil layers of the down-flow and up-flow devices comprise begonia fimbristipula. The small-sized composite vertical flow integrated system is a separate small-sized composite vertical flow wetland system which utilizes composite vertical flow constructed wetlands, the floor area is small, the loading capacity is high, the operational life is long, the nitrogen and phosphorus removal effect is good, and the treated outlet water reaches the level-A emission standard of Urban Sewage Treatment Plant Pollutant Emission Standards (GB19818-2002).
Description
Technical field
The utility model relates to a kind of sanitary sewage disposal technology, relates in particular to a kind of small-sized sanitary sewage composite vertical current integral system.
Background technology
Though the artificial swamp treatment technology is widely used, but also be confined to the reed bed system of single flat flow or upright streaming mostly, these wetland bed system floor spaces are big, and hydraulic load and pollution load are lower, the operation life of system is shorter, and the denitrogenation dephosphorizing effect is bad.
Summary of the invention
The purpose of this utility model provides that a kind of floor space is little, portative power is strong, operation life is long, the small-sized sanitary sewage composite vertical current integral system of good denitrogenation and dephosphorization effect.
The purpose of this utility model is achieved through the following technical solutions:
Small-sized sanitary sewage composite vertical current integral system of the present utility model, comprise down to stream device and upward flow device, described following bottom to stream device and upward flow device is interconnected, and described following top to the stream device is provided with water-in, and the top of described upward flow device is provided with water outlet;
Be followed successively by from top to bottom to the stream device under described: pedosphere, haydite layer, quartz sand layer, pebble bed;
Described upward flow device is followed successively by from top to bottom: pedosphere, gravel bed, zeolite layer, cobble add the carbon source layer.
The technical scheme that is provided by above-mentioned the utility model as can be seen, the small-sized sanitary sewage composite vertical current integral system that the utility model embodiment provides, owing to comprise down to stream device and upward flow device, be interconnected to the bottom of stream device and upward flow device down, be provided with water-in to the top of stream device down, the top of upward flow device is provided with water outlet; Be followed successively by from top to bottom to the stream device down: pedosphere, haydite layer, quartz sand layer, pebble bed; The upward flow device is followed successively by from top to bottom: pedosphere, gravel bed, zeolite layer, cobble add the carbon source layer.Floor space is little, portative power is strong, operation life is long, good denitrogenation and dephosphorization effect.
Description of drawings
The structural representation of the small-sized sanitary sewage composite vertical current integral system that Fig. 1 provides for the utility model embodiment.
Embodiment
To be described in further detail the utility model embodiment below.
Small-sized sanitary sewage composite vertical current integral system of the present utility model, its preferable embodiment is:
Comprise down to stream device and upward flow device, describedly be interconnected to the bottom of stream device down that describedly be provided with water-in to the top of flowing device down, the top of described upward flow device is provided with water outlet with the upward flow device;
Be followed successively by from top to bottom to the stream device under described: pedosphere, haydite layer, quartz sand layer, pebble bed;
Described upward flow device is followed successively by from top to bottom: pedosphere, gravel bed, zeolite layer, cobble add the carbon source layer.
Be respectively equipped with plant under described in the pedosphere of stream device and upward flow device, described plant comprises Radix Semiaquilegiae.
The utility model utilizes composite vertical current artificial wetland to handle sanitary sewage, set up an independent small-sized composite vertical current wet land system, the water outlet after the processing reaches " urban wastewater treatment firm pollutant emission standard " (GB19818-2002) one-level A emission standard.Floor space is little, portative power is strong, operation life is long, good denitrogenation and dephosphorization effect.
Specific embodiment:
1, system principle:
As shown in Figure 1, former water is first through descending to the stream wetland, after upward flow wetland qualified discharge or reuse.Bringing air to flowing through Cheng Zhonghui into current down, help the growth of aerobic microbiological, in stream so in the nitrification that organic aerobic degradation, nitrogen mainly take place down; Oxygen in water is consumed in upward flow, is in the hypoxic/anaerobic environment, and the microorganism of growth is the hypoxic/anaerobic microorganism, and the reaction of generation is mainly the denitrification and the organic anaerobic degradation of nitrogen.This aerobic, anaerobism alternative environment in the composite vertical current artificial wetland helps the removal of organic pollutant in the water, especially the removal of nitrogen phosphorus.
2, filler selection:
The polluted water land treatment system is general to adopt natural soil layer as permeating medium, and the backfill medium that is used as land treatment system generally can adopt natural sand, artificial sand, slag and fine coal etc.The utility model also is to adopt artificial backfill medium, down to the upward flow device in filtrate be the core of system, therefore, selecting suitable filtration media is the key of system's success.The general factor of considering following several respects of the selection of filtration media:
1) price factor:
Filtration media as system at first must be cheap, and obtain easily.
2) penetrating quality:
Filtration media requires to have the good penetration performance, to improve hydraulic load, reduces floor space.The coefficient of permeability K value is big more, and hydraulic load is high more, and effluent characteristics also can be poor more.The K value of coarse sand is big, and hydraulic load is also high, but can not guarantee effluent characteristics.The fine sand particle diameter is little, and mechanical filter is effective, but the K value is less, and system is blocked easily.
3) pollutant removal:
The penetrating quality of medium is good more, and its hydraulic load is high more.But hydraulic load is too high, is difficult to the effluent quality of the system that guarantees again.Therefore, selected filtration media should have good penetrating quality, contain certain amount of clay mineral and organic matter again, strengthen its holding back and adsorption to pollutent, also can guarantee simultaneously the specific surface area that the filtration media tool is bigger and the biomass of high density, thereby have pollutant removal preferably.In addition, the conversion of ammonia nitrogen needs to consume basicity, and therefore, selected filtration media should contain a certain amount of calcareous, with the buffer pH value.
So, when selecting filtration media, not only to consider price, size, the penetrating quality of medium, also to consider the physicochemical property of medium.
Comprehensive above factor and in the past about the research of dielectric property, the utility model selects filler to be: be followed successively by from top to bottom to stream down: soil-haydite-quartz sand-cobble, the upward flow device is followed successively by from top to bottom: soil-gravel-zeolite-cobble+carbon source.
3, the selection of plant:
In the utility model, selected plant need reach following requirement:
1) has flourishing root system, can play loosening anti-blocking effect filler in the system;
2) be fit to growth in a humid environment;
3) strong stress resistance, vegetative period is short, can many batches of crop rotations;
4) growth can be removed the absorption of pollutents such as N, P by accelerating system rapidly;
5) landscape effect is obvious.
By document inquiry and research, breaking through with simple landscape plant is reconnaissance, and selecting for use in the utility model as vegetable growing has the Radix Semiaquilegiae of long history as the plant of planting in the system.It has that strong stress resistance, happiness moist environment, branchiness are strong, well developed root system, lateral root is many, regenerative power is strong, easily plantation, pinch stem cutting and plant characteristics such as survive, and is that a kind of adaptive capacity to environment is strong, growth is rapid, is convenient to the plant that crop rotation is planted.Therefore, Radix Semiaquilegiae is a kind of plant that is suitable for system.
4, running effect analysis
For verifying treatment effect of the present utility model, TN, NH in the sanitary sewage of preparation
3-N, NO
3-N concentration is respectively 19.6mg/L, 13.8mg/L, 4mg/L, and COD water inlet mean concns is 95mg/L, and flooding velocity is 12.5L/d, and hydraulic load is 0.1m
3/ (m
2D).
(1) under to stream device in the nitrogen quantitative changeization:
Before the aeration, ammonia nitrogen content remains on about 100mg/d in the stream device down, and clearance is about 50%, and remaining ammonia nitrogen all will lean on the adsorption of the matrix of upward flow device to remove, and the ammonia-nitrogen content in the aerobic zone is very low behind the aeration, and the overwhelming majority has changed into nitrate.Before the aeration, the nitrate amount in the stream device does not only increase reduction on the contrary down, and the concentration of nitrate obviously increases behind the aeration.The existence form and the water inlet of the interior nitrogen of aerobic zone present diverse state behind the aeration.What account for major portion in water inlet is ammonia nitrogen, and pass through aeration in aerobic zone after, nitrate has comparative advantage, and is the main existence form of nitrogen in the water.
(2) nitrogen in the upward flow device changes:
Mainly be that nitrate carries out anti-nitration reaction in the upward flow device, nitrate is converted into gas.Before increasing carbon source, though having significantly, reduces nitrate concentration, the concentration of nitrate is still higher in the final outflow water.Illustrate that anti-nitration reaction is thorough inadequately.Be in anaerobic environment in the upward flow device, the residence time, (about 72h) satisfied the condition of anti-nitration reaction, thought that the carbon source deficiency has influenced the carrying out of anti-nitration reaction.
COD remains between 20～50mg/L in the water inlet of upward flow device, and concentration is not high.Corresponding at this moment nitrate concentration is between 3～7mg/L, by theory as can be known denitrification 1g nitrate nitrogen need COD3.7g, according to remaining the required COD of nitrate between 10～30mg/L in this relation calculating water, and in the water COD of real surplus also in this scope, the needs of enough in theory anti-nitration reactions, but real reaction does not carry out, and illustrates that remaining COD is difficult to be used by microorganism.So at upward flow with down to the middle carbon source reactor that increases of stream device.To increase the required organism amount of reaction, after the increase, it is very thorough that anti-nitration reaction carries out, and the water outlet nitrate concentration is below 1mg/L.
After increasing the carbon source reactor,, the COD amount in the reactor before and after increasing is contrasted for whether checking exerts an influence to the COD of water outlet.The water outlet COD of carbon source reactor slightly increases, and illustrates that the organism speed of branch release is slow, and the organism that hydrolysis goes out is very fast to be utilized by denitrifying bacterium, has only a few part to flow away with current.Remaining organism is utilized by microorganism gradually in the upward flow device, the phenomenon that raising does not appear in final outflow water COD.
NH3-N water inlet mean concns is 11mg/L, water outlet mean concns 0.33mg/L, and the whole clearance of wetland is 97%, and the clearance to the stream device is 64% down, and upward flow device clearance is 33%.NO
3-N water inlet mean concns is 2.58mg/L, water outlet mean concns 0.14mg/L, and the whole clearance of wetland is 95%, water outlet nitrate keeps lower level.TN water inlet mean concns is 15mg/L, water outlet mean concns 0.5mg/L, and the whole clearance of wetland is 97%, and the clearance to the stream device is 42% down, and the overall clearance of carbon source reactor and upward flow device is 55%.The down absorption of main absorption that relies on plant and medium in the stream device, hold back, remaining nitrogen mainly exists with the form of nitrate, and after current entered carbon source reactor and upward flow device, because the carbon source abundance, anti-nitration reaction carried out fully.Water outlet TN remains on below the 1mg/L, reaches surface water environment quality III class standard.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (3)
1. small-sized sanitary sewage composite vertical current integral system, it is characterized in that, comprise down to stream device and upward flow device, be interconnected to the bottom of stream device and upward flow device under described, be provided with water-in to the top of stream device under described, the top of described upward flow device is provided with water outlet;
Be followed successively by from top to bottom to the stream device under described: pedosphere, haydite layer, quartz sand layer, pebble bed;
Described upward flow device is followed successively by from top to bottom: pedosphere, gravel bed, zeolite layer, carbon source layer.
2. small-sized sanitary sewage composite vertical current integral system according to claim 1 is characterized in that, describedly down is respectively equipped with plant in the pedosphere of stream device and upward flow device.
3. small-sized sanitary sewage composite vertical current integral system according to claim 2 is characterized in that described plant comprises Radix Semiaquilegiae.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220726867 CN203095790U (en) | 2012-12-25 | 2012-12-25 | Small-sized composite vertical flow integrated system for domestic sewage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220726867 CN203095790U (en) | 2012-12-25 | 2012-12-25 | Small-sized composite vertical flow integrated system for domestic sewage |
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| CN203095790U true CN203095790U (en) | 2013-07-31 |
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| CN 201220726867 Expired - Lifetime CN203095790U (en) | 2012-12-25 | 2012-12-25 | Small-sized composite vertical flow integrated system for domestic sewage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098234A (en) * | 2014-08-04 | 2014-10-15 | 江苏优联环境发展有限公司 | Wave flow type denitrification filtering pond |
| CN104163520A (en) * | 2014-06-16 | 2014-11-26 | 河海大学 | Method and device for granulation reaction by using high-hardness water |
| CN105984957A (en) * | 2016-01-22 | 2016-10-05 | 安徽建筑大学 | Constructed wetland treatment method for ammonia-nitrogen wastewater |
| CN110078299A (en) * | 2019-04-15 | 2019-08-02 | 河海大学 | A kind of artificial swamp sewage reutilization device and method |
| CN113321369A (en) * | 2021-02-08 | 2021-08-31 | 重庆大学 | Tidal flow artificial wetland capable of simultaneously removing nitrogen and phosphorus |
-
2012
- 2012-12-25 CN CN 201220726867 patent/CN203095790U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163520A (en) * | 2014-06-16 | 2014-11-26 | 河海大学 | Method and device for granulation reaction by using high-hardness water |
| CN104098234A (en) * | 2014-08-04 | 2014-10-15 | 江苏优联环境发展有限公司 | Wave flow type denitrification filtering pond |
| CN104098234B (en) * | 2014-08-04 | 2016-08-24 | 江苏优联环境发展有限公司 | A kind of wave current formula denitrification filter pool |
| CN105984957A (en) * | 2016-01-22 | 2016-10-05 | 安徽建筑大学 | Constructed wetland treatment method for ammonia-nitrogen wastewater |
| CN110078299A (en) * | 2019-04-15 | 2019-08-02 | 河海大学 | A kind of artificial swamp sewage reutilization device and method |
| CN113321369A (en) * | 2021-02-08 | 2021-08-31 | 重庆大学 | Tidal flow artificial wetland capable of simultaneously removing nitrogen and phosphorus |
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Granted publication date: 20130731 |