CN105036450A - Method and device of treating village domestic sewage through three-stage circular-flow-type constructed wetland - Google Patents
Method and device of treating village domestic sewage through three-stage circular-flow-type constructed wetland Download PDFInfo
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- CN105036450A CN105036450A CN201510229993.4A CN201510229993A CN105036450A CN 105036450 A CN105036450 A CN 105036450A CN 201510229993 A CN201510229993 A CN 201510229993A CN 105036450 A CN105036450 A CN 105036450A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a method and a device of treating village domestic sewage through a three-stage circular-flow-type constructed wetland. In the invention, sewage is fed into an anaerobic bio-chemical pond through a sewage pipe. The sewage is fermented to degrade macromolecular organic substances into small molecules, thereby increasing the biodegradability of the sewage. Meanwhile, a temperature increasing effect during the anaerobic treatment is beneficial to improvement of degradation capability of constructed wetland to the sewage and growth of plants in winter and activity of microorganisms are improved. The anaerobically fermented sewage, through a submerged pump, is fed into a three-stage circular-flow-type constructed wetland pond. The sewage firstly passes through a first constructed wetland pond through an annular water distribution pipe, and then is subjected to precipitation, filling material filtration, adsorption, bio-degradability and plant root system absorption and the like during an up-flowing process to achieve sewage cleaning, wherein sand stone and furnace slag in a first filling material layer and a second filling material layer mainly have the effects of filtration and adsorption. A third filling material layer also has an effect of adsorbing phosphorus in sewage, thereby enhancing a phosphorus removal effect. The sewage is discharged at a third constructed wetland through a water outlet pipe away from the constructed wetland.
Description
Technical field
Patent of the present invention relates to a kind of method and device of tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas, belongs to technical field of sewage.
Background technology
At present, artificial swamp makes full use of the feature of natural bioremediation system purification sewage ability, sewage and mud are along in certain orientation flow process, by the function such as materialization, biological degradation, utilize soil in artificial swamp, the filtration of plant and microorganism, absorption, precipitation, ion-exchange, root system of plant absorb and microbiological deterioration realizes dirty water pollutant removal function.It has that treatment effect is good, operational management is convenient, engineering capital construction and the feature such as working cost is low, is widely used in the Rural areas process sanitary sewage of land resources relative abundance, protection local environment.
The Root Absorption of vegetation in the degradation function that the purification function of artificial swamp mainly relies on the absorption of mud in artificial swamp and bacteria metabolism to produce and wetland, the sludge microbe activity that traditional artificial swamp causes due to the low temperature effect being subject to autumn and winter reduces and plant metabolism sharply reduces, this seasonal variation result in the feature of the poor stability of Sewage treatment in constructed wetland, conventional artificial swamp is at soil, planting plants on the adhesive matrixes such as mud, but the competitive relation that this matrix not only can bring other weeds class plant-growths to cause, these matrix flow are strong simultaneously, easily under the impact of sewage, depart from artificial swamp by pipeline, even block pipeline in wetland, so existing rural domestic sewage treatment system is still perfect not.
Summary of the invention
The object of the invention is: method and device that a kind of tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas that a kind of structure is simple, sewage disposal is stablized, systems stay runs is provided, to overcome the deficiencies in the prior art.
The present invention is achieved in that a kind of method of tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas, and the method for this rural domestic sewage treatment is carried out as follows:
1) by domestic sewage in rural areas by Cemented filling to anaerobic biological pond;
2) sanitary sewage in anaerobic biological pond is entered, anaerobic bacterial fermentation is passed through in airtight environment, and the temperature in anaerobic biological pond is higher than 3 DEG C, the temperature improving whole sewage is beneficial to the growth and the biological activity that improve constructed wetland plant in low temperature environment in the winter time;
3) domestic sewage in rural areas that anaerobic biological pond processes by undercurrent pump rises to tertiary circulation streaming artificial swamp pond from anaerobic biological pond;
4) step by step sewage is purified by tertiary circulation streaming artificial swamp pond.
Described tertiary circulation streaming artificial swamp pond comprises first step artificial swamp pond, artificial swamp pond, the second stage and third stage artificial swamp pond, in first step artificial swamp pond, the waterplant being implanted with purifying contaminated thing is planted in artificial swamp pond, the second stage and third stage artificial swamp pond.
Described first step artificial swamp pond, the first layer packing layer is provided with in artificial swamp pond, the second stage and third stage artificial swamp pond, second layer packing layer and third layer packing layer, the thickness of the first layer packing layer is 50 ~ 60cm, the first layer packing layer is slag and stone, and the thickness of described second layer packing layer is 20 ~ 30cm, and second layer packing layer is vermiculite and zeolite, described third layer packing layer thickness is 10 ~ 20cm, and third layer packing layer is ecological filtrate.
A kind of tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas device, comprise the imported valve that waste pipe and waste pipe are arranged, waste pipe is connected with the water-in in anaerobic biological pond, anaerobic biological pond is provided with rising pipe, rising pipe is provided with undercurrent pump, and the rising pipe in anaerobic biological pond is connected with tertiary circulation streaming artificial swamp pond.
Described tertiary circulation streaming artificial swamp pond comprises first step artificial swamp pond, artificial swamp pond, the second stage and third stage artificial swamp pond, described third stage artificial swamp pond is arranged in artificial swamp pond, the second stage, artificial swamp pond, the second stage is arranged in first step artificial swamp pond, first step artificial swamp pond is provided with the annular water distributor be connected with rising pipe, and first step artificial swamp pond is connected with artificial swamp pond, the second stage by V-notch weir.
Described first step artificial swamp pond, in artificial swamp pond, the second stage and third stage artificial swamp pond, hypothallus is set, hypothallus is by the first layer packing layer, second layer packing layer and third layer packing layer composition, the first layer packing layer is arranged on above second layer packing layer, and second layer packing layer is arranged on the top of third layer packing layer.
The thickness of described the first layer packing layer is 50 ~ 60cm, and the first layer packing layer is slag and stone.
The thickness of described second layer packing layer is 20 ~ 30cm, and second layer packing layer is vermiculite and zeolite.
Described third layer packing layer thickness is 10 ~ 20cm, and third layer packing layer is ecological filtrate.
The rising pipe in anaerobic biological pond is provided with outlet valve.
Tertiary circulation streaming artificial swamp pond is provided with water shoot.
Owing to have employed technique scheme, compared with prior art, anaerobic biological pond and tertiary circulation streaming artificial swamp pond are combined process domestic sewage in rural areas by the present invention, strengthen the purification efficiency of sewage, improve the stability of sewage disposal simultaneously, there is floor space little, the advantages such as cost of investment is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the vertical view in tertiary circulation streaming artificial swamp pond;
Description of reference numerals: 1-waste pipe, 2-imported valve, 3-anaerobic biological pond, 4-rising pipe, 5-undercurrent pump, 6-tertiary circulation streaming artificial swamp pond, 7-the first layer packing layer, 8-second layer packing layer 8,9-third layer packing layer 9,10-outlet valve, 11-first step artificial swamp pond, artificial swamp pond, the 12-second stage, 13-third stage artificial swamp pond, 14-water shoot, 15-annular water distributor, 16-V-notch weir.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail, but not as limitation of the present invention.
Embodiments of the invention: a kind of method of tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas, the method for this rural domestic sewage treatment is carried out as follows:
1) by domestic sewage in rural areas by Cemented filling to anaerobic biological pond;
2) sanitary sewage in anaerobic biological pond is entered, anaerobic bacterial fermentation is passed through in airtight environment, and the temperature in anaerobic biological pond is higher than 3 DEG C, the temperature improving whole sewage is beneficial to the growth and the biological activity that improve constructed wetland plant in low temperature environment in the winter time;
3) domestic sewage in rural areas that anaerobic biological pond processes by undercurrent pump rises to tertiary circulation streaming artificial swamp pond from anaerobic biological pond;
4) step by step sewage is purified by tertiary circulation streaming artificial swamp pond.
Described tertiary circulation streaming artificial swamp pond comprises first step artificial swamp pond, artificial swamp pond, the second stage and third stage artificial swamp pond, in first step artificial swamp pond, the waterplant being implanted with purifying contaminated thing is planted in artificial swamp pond, the second stage and third stage artificial swamp pond.
Described first step artificial swamp pond, the first layer packing layer is provided with in artificial swamp pond, the second stage and third stage artificial swamp pond, second layer packing layer and third layer packing layer, the thickness of the first layer packing layer is 50 ~ 60cm, the first layer packing layer is slag and stone, and the thickness of described second layer packing layer is 20 ~ 30cm, and second layer packing layer is vermiculite and zeolite, described third layer packing layer thickness is 10 ~ 20cm, and third layer packing layer is ecological filtrate.
A kind of tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas device, comprise the imported valve 2 that waste pipe 1 and waste pipe are arranged, waste pipe 1 is connected with the water-in in anaerobic biological pond 3, anaerobic biological pond 3 is provided with rising pipe 4, rising pipe 4 is provided with undercurrent pump 5, and the rising pipe in anaerobic biological pond 3 is connected with tertiary circulation streaming artificial swamp pond 6.
Described tertiary circulation streaming artificial swamp pond 6 comprises first step artificial swamp pond 11, artificial swamp pond, the second stage 12 and third stage artificial swamp pond 13, described third stage artificial swamp pond 13 is arranged in artificial swamp pond, the second stage 12, artificial swamp pond, the second stage 12 is arranged in first step artificial swamp pond 11, first step artificial swamp pond 11 is provided with the annular water distributor 15 be connected with rising pipe 4, and first step artificial swamp pond 11 is connected with artificial swamp pond, the second stage 12 by V-notch weir 16.
Described first step artificial swamp pond 11, in artificial swamp pond, the second stage 12 and third stage artificial swamp pond 13, hypothallus is set, hypothallus is by the first layer packing layer 7, second layer packing layer 8 and third layer packing layer 9 form, the first layer packing layer 7 is arranged on above second layer packing layer 8, and second layer packing layer 8 is arranged on the top of third layer packing layer 9.
The thickness of described the first layer packing layer 7 is 50 ~ 60cm, and the first layer packing layer 7 is slag and stone.
The thickness of described second layer packing layer 8 is 20 ~ 30cm, and second layer packing layer 8 is vermiculite and zeolite.
Described third layer packing layer 9 thickness is 10 ~ 20cm, and third layer packing layer 9 is ecological filtrate.
The rising pipe in anaerobic biological pond 3 is provided with outlet valve 10.
Tertiary circulation streaming artificial swamp pond 6 is provided with water shoot 14.
Sewage enters anaerobic biological pond 3, in order to ensure air-proof condition, anaerobic biological pond 3 adopts reinforced-concrete construction, desilting mouth is installed on top, anaerobic biological pond 3, regular removing anaerobically fermenting settling, whole anaerobic pond is body structure, be of a size of 2m × 1.5m, be highly 2.6m, underground part height is 1.2m, on the left of anaerobic biological pond 3, waste pipe 1 arranges an imported valve 2, control flooding time, at the bottom of distance pond, right side, 0.5m installs undercurrent pump, mainly play the sewage lifting of anaerobic treatment to tertiary circulation streaming artificial swamp pond 6, whole anaerobic biological pond 3 is all closing condition at the outlet valve 10 of fermentation stage imported valve 2 and desilting mouth, airtight anaerobic biological pond 3 is conducive to anaerobic bacterial fermentation, improve the temperature of whole sewage while anaerobically fermenting simultaneously, this intensification can reach 3 DEG C, the temperature be raised to is conducive to adapting to the low temperature environment in winter thus the growth of raising constructed wetland plant and biological activity.
Undercurrent pump by the sewage lifting of anaerobic treatment to tertiary circulation streaming artificial swamp pond 6, tertiary circulation streaming artificial swamp pond 6 is three grades of annular concentric ponds, pond is all that reinforcing bar mixes territory structure, first step artificial swamp pond 11 is ponds, outside, water distributor is had at the bottom of pond, water distributor is the same with concentric ring shape, ensure that the homogeneity of water distribution, the pool wall of first step artificial swamp pond 11 and centre, artificial swamp pond 12, the second stage adopts V-notch weir to make sewage enter artificial swamp pond, the second stage 12 from first step artificial swamp pond 11, thrust-augmenting nozzle is established to make sewage enter third stage artificial swamp pond 13 at the bottom of pond, artificial swamp pond 12, the second stage, this annular artificial swamp pond structure and annular water distribution manner not only save artificial swamp floor space, be conducive to increasing hydraulic detention time simultaneously, be conducive to the detergent power under raising artificial swamp environment.
It is main that yellow iris is planted in 11 kinds, first step artificial swamp pond, also has cattail, calamus, rhizoma alismatis, arrowhead, flower reed; Artificial swamp pond 12, the second stage, based on calamus, also has Spiked Loosestrife, Scirpus tabernaemontani, flower reed, water lily; Artificial swamp pond, the second stage 12, based on mullet grass, also has cattail, lotus flower, water lily, circle coin grass, Herba Eichhorniae, fox; Third stage artificial swamp pond 13 is with tail algae, duckweed, water peanut, aquatic Canna generalis Bailey, water Xue grass, pad in shoe Cao, Nymphoides dish, water silk floss, these waterplant are integral parts of purifying contaminated thing in the ecosystem, broad variety plant not only all improves a lot on the pollutant kind of sewage purification and content, and is conducive to the stable of the ecosystem.
First step artificial swamp pond 11, arrange hypothallus in artificial swamp pond, the second stage 12 and third stage artificial swamp pond 13, hypothallus top the first layer packing layer 7 is slag and stone, and thickness is 50cm, and the particle diameter of slag and stone and porosity are 15mm respectively, 0.62; 4mm, 0.44., second layer packing layer 8 is mixtures of vermiculite and zeolite, and thickness is 20cm, and particle diameter and porosity are 28mm, 0.47.Third layer packing layer 9 is by ecological filtrate, and thickness is 10cm, and ecological filtrate is the particulate matter of sludge water from water works high-temperature roasting (550 DEG C), due to containing a large amount of Al2O3 and the large feature of porosity thus have very strong absorption property and except P effect.Above-mentioned filler particles is stablized, and the run off depth of packing that causes of water impact can not occur and reduce and line clogging phenomenon.
Domestic sewage in rural areas of the present invention enters anaerobic biological pond 3 by waste pipe 1, after the fermentation of 14h, in sewage, larger molecular organics is degraded into small molecules, improve the biodegradability of sewage, simultaneously the thermogenic action of anaerobism is conducive to improving the degradation capability of sewage at artificial swamp, promotes plant growth in the winter time and microbic activity.Sewage through anaerobically fermenting enters tertiary circulation streaming artificial swamp pond 6 by undercurrent pump, first sewage enter first step artificial swamp pond 11 by annular water distributor, precipitate in the process of upper reaches, filler filters, absorption, the effects such as biological degradation and root system of plant absorption reach sewage purification function, the first layer packing layer 7, sandstone in the filler of second layer packing layer 8 and slag mainly play Filtration Adsorption effect, third layer packing layer 9 also plays the effect of P in absorption effluent, enhanced sewage is except P effect, sewage discharges artificial swamp in third stage artificial swamp pond 13 by rising pipe.
Claims (9)
1. a method for tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas, is characterized in that: the method for this rural domestic sewage treatment is carried out as follows:
1) by domestic sewage in rural areas by Cemented filling to anaerobic biological pond;
2) sanitary sewage in anaerobic biological pond is entered, anaerobic bacterial fermentation is passed through in airtight environment, and the temperature in anaerobic biological pond is higher than 3 DEG C, the temperature improving whole sewage is beneficial to the growth and the biological activity that improve constructed wetland plant in low temperature environment in the winter time;
3) domestic sewage in rural areas that anaerobic biological pond processes by undercurrent pump rises to tertiary circulation streaming artificial swamp pond from anaerobic biological pond;
4) step by step sewage is purified by tertiary circulation streaming artificial swamp pond.
2. the method for tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas according to claim 1, it is characterized in that: described tertiary circulation streaming artificial swamp pond comprises first step artificial swamp pond, artificial swamp pond, the second stage and third stage artificial swamp pond, in first step artificial swamp pond, the waterplant being implanted with purifying contaminated thing is planted in artificial swamp pond, the second stage and third stage artificial swamp pond.
3. the method for tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas according to claim 1, it is characterized in that: described first step artificial swamp pond, the first layer packing layer is provided with in artificial swamp pond, the second stage and third stage artificial swamp pond, second layer packing layer and third layer packing layer, the thickness of the first layer packing layer is 50 ~ 60cm, the first layer packing layer is slag and stone, the thickness of described second layer packing layer is 20 ~ 30cm, second layer packing layer is vermiculite and zeolite, described third layer packing layer thickness is 10 ~ 20cm, third layer packing layer is ecological filtrate.
4. the device of a tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas, comprise the imported valve (2) that waste pipe (1) and waste pipe are arranged, it is characterized in that: waste pipe (1) is connected with the water-in of anaerobic biological pond (3), anaerobic biological pond (3) are provided with rising pipe (4), rising pipe (4) is provided with undercurrent pump (5), and the rising pipe of anaerobic biological pond (3) is connected with tertiary circulation streaming artificial swamp pond (6).
5. the device of tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas according to claim 4, it is characterized in that: described tertiary circulation streaming artificial swamp pond (6) comprises first step artificial swamp pond (11), artificial swamp pond, the second stage (12) and third stage artificial swamp pond (13), described third stage artificial swamp pond (13) is arranged in artificial swamp pond, the second stage (12), artificial swamp pond, the second stage (12) is arranged in first step artificial swamp pond (11), first step artificial swamp pond (11) is provided with the annular water distributor (15) be connected with rising pipe (4), first step artificial swamp pond (11) is connected with artificial swamp pond, the second stage (12) by V-notch weir (16).
6. the device of tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas according to claim 5, it is characterized in that: described first step artificial swamp pond (11), in artificial swamp pond, the second stage (12) and third stage artificial swamp pond (13), hypothallus is set, hypothallus is by the first layer packing layer (7), second layer packing layer (8) and third layer packing layer (9) composition, the first layer packing layer (7) is arranged on second layer packing layer (8) top, and second layer packing layer (8) is arranged on the top of third layer packing layer (9).
7. tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas device according to claim 5, it is characterized in that: the thickness of described the first layer packing layer (7) is 50 ~ 60cm, the first layer packing layer (7) is slag and stone, the thickness of described second layer packing layer (8) is 20 ~ 30cm, second layer packing layer (8) is vermiculite and zeolite, described third layer packing layer (9) thickness is 10 ~ 20cm, and third layer packing layer (9) is ecological filtrate.
8. tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas device according to claim 4, is characterized in that: on the rising pipe of anaerobic biological pond (3), be provided with outlet valve (10).
9. tertiary circulation streaming artificial wetland treatment domestic sewage in rural areas device according to claim 4, is characterized in that: on tertiary circulation streaming artificial swamp pond (6), be provided with water shoot (14).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110606623A (en) * | 2019-09-16 | 2019-12-24 | 湖北中科恒清生态工程有限公司 | Single household domestic sewage treatment system |
| CN111362502A (en) * | 2020-02-26 | 2020-07-03 | 生态环境部华南环境科学研究所 | Device for treating rural domestic wastewater by utilizing three-stage artificial wetland |
| CN113735391A (en) * | 2021-09-30 | 2021-12-03 | 中国环境科学研究院 | Flower jar type courtyard domestic sewage treatment device and method |
| CN113880372A (en) * | 2021-11-15 | 2022-01-04 | 北京广诚环境科技有限公司 | Domestic sewage constructed wetland treatment system and construction process |
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