CN104860398A - Intensive device for treating rural domestic sewage and construction method thereof - Google Patents
Intensive device for treating rural domestic sewage and construction method thereof Download PDFInfo
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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
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Abstract
The invention discloses an intensive device for treating rural domestic sewage and a construction method thereof and relates to the field of sewage treatment. The intensive device comprises a plurality of sewage collecting pipes; an anaerobic digestion system aerobiotic digestion pool and an ecological purification system which are sequentially connected; one ends of the sewage collecting pipes are connected with a household water-consumption outlet and the other ends are connected with the anaerobic digestion system; the anaerobic digestion system comprises a first stage anaerobic digestion pool, a second stage anaerobic digestion pool and a third stage anaerobic digestion pool which are sequentially connected; the volume computational formulas of the first stage anaerobic digestion pool, the second stage anaerobic digestion pool, the third stage anaerobic digestion pool and the aerobiotic digestion pool are: V=aNqt/(24*2000), wherein N is the serviced population size, a is the sewage generation coefficient of 0.7-0.9, q is the water consumption per capita of 80-120 L/d, and t is the retention time of the water in the corresponding digestion pool. The intensive device is small in occupied space and low in cost.
Description
Technical field
The present invention relates to sewage treatment area, be specifically related to a kind of intensive device for the treatment of domestic sewage in rural areas and method of construction thereof.
Background technology
Along with the development of rural economy and the continuous propelling of urbanization, the agricultural chemicals that rural area is cultivated and Residual Fertilizer, aquaculture wastewater quantity discharged sharply increase, to the serious pollution that natural water and soil cause, the large amount of sewage that rural area distributing life simultaneously produces also directly enters in river and lake, cause serious water body, soil pollution, water body and soil contaminated after, the pollutent such as hazardous compound, heavy metal enters human body by food chain, rural area cancer population is caused sharply to increase, the grievous injury health of people in the countryside.
The developed country such as the U.S., Japan process domestic sewage in rural areas have accumulated rich experience, mainly by pollutent harmless treatment and recycling treatment on the spot.The method for the treatment of in situ is: pollutent is entered the natural system such as soil or wetland, carry out natural decomposition; The method of recycling treatment is: pollutent is entered the manual handling systems such as sand filter, integrated aerobic treatment system, purification tank, pollutent can not only be purified, and can obtain bio-feritlizer.
Adopt that the energy expenditure of harmless treatment on the spot and recycling treatment is less, cost is lower, operation is simple, convenient management, meet that China's rural development is backward, with low content of technology, shortage of professionals, level of automation are low, the present situation of economics delay.
Application number be 201010139475.0 patent of invention disclose one way of life waste disposal plant, this device comprise connect in turn settling pit, anaerobic digester and ecological purification filter tank, adopt the sewage after the method process can reach the one-level requirement of national sewage comprehensive emission standard GB8978-1996.But the floor space of this device is comparatively large, and cost of manufacture is higher, complex structure, management maintenance difficulty are large, are not suitable with Rural areas and use.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of intensive device for the treatment of domestic sewage in rural areas and method of construction thereof, not only floor space is less, and operational management convenience, construction and maintenance cost are lower.
For reaching above object, the technical scheme that the present invention takes is: a kind of intensive device for the treatment of domestic sewage in rural areas, comprising: some sewage collection conduits;
The anaerobic digester system connected in turn, aerobic digestion tank and ecological purification system; Described some sewage collection conduits are one end and are connected with urbanite water consumption water port, and the other end is connected with anaerobic digester system; Described anaerobic digester system comprises the one-level anaerobic digester, secondary anaerobic digester and the three grades of anaerobic digesters that connect in turn;
The volume calculation formula of described one-level anaerobic digester, secondary anaerobic digester, three grades of anaerobic digesters and aerobic digestion tank is: V=aNqt/ (24*1000), described N are the size of population of service; Described a is the generation coefficient 0.7 ~ 0.9 of sewage; Described q is water consumption 80 ~ 120L/d per capita, described t is the time that water stops in corresponding digester, and the time that the time that the time that the time that water stops in one-level anaerobic digester is 4 ~ 7 days, water stops in secondary anaerobic digester is 2 ~ 4 days, water stops in three grades of anaerobic digesters is 2 ~ 4 days, water stops in aerobic digestion tank is 2 ~ 4 days.
On the basis of technique scheme, the inside stating one-level anaerobic digester is provided with anaerobion packing layer, described anaerobion packing layer is parallel with one-level anaerobic digester top, and the distance between the top of described anaerobion packing layer and one-level anaerobic digester top is 80 ~ 100cm.
On the basis of technique scheme, described one-level anaerobic digester is connected by the first communicating pipe with secondary anaerobic digester, described first communicating pipe comprises feed-water end and water side, described feed-water end is higher than water side, described feed-water end is positioned at the inside of one-level anaerobic digester, described water side is positioned at the inside of secondary anaerobic digester, and the distance between pushing up in described feed-water end and one-level anaerobic digester is 15 ~ 30cm, and the distance in water side and secondary anaerobic digester is 30 ~ 50cm at the end.
On the basis of technique scheme, described secondary anaerobic digester is connected by the second communicating pipe with three grades of anaerobic digesters, described second communicating pipe comprises feed-water end and water side, described feed-water end is higher than water side, described feed-water end is positioned at the inside of secondary anaerobic digester, described water side is positioned at the inside of three grades of anaerobic digesters, distance between pushing up in described feed-water end and secondary anaerobic digester is 15 ~ 30cm, and the distance in described water side and three grades of anaerobic digesters is 30 ~ 50cm at the end.
On the basis of technique scheme, described aerobic digestion tank is connected with three grades of anaerobic digesters of anaerobic digester system by third connecting pipe, described third connecting pipe comprises feed-water end and water side, described feed-water end is higher than water side, distance between pushing up in described feed-water end and three grades of anaerobic digesters is 15 ~ 30cm, and the distance in described water side and aerobic digestion tank is 15 ~ 30cm at the end.
On the basis of technique scheme, the inside of described aerobic digestion tank is provided with aerating apparatus and aerobic refining plant, described aerating apparatus is positioned at the top of aerobic refining plant, described aerobic refining plant comprises and setting gradually from top to bottom and aerobic microbiological packing layer, stalk carbon-coating, gravel bed and filter screen, aerobic microbiological packing layer and the well distance of supporting in digester are 30 ~ 50cm at the end, its cross section is square, and its surface-area is equal with good sample digester floorage.
On the basis of technique scheme, described ecological purification system comprises some drainage unit and some planting tubes, each drainage unit is provided with some drainage tubes, described each drainage tube is all corresponding with a planting tube, described each drainage tube is one end and is connected with aerobic digestion tank, and the other end is connected with clear water collecting tank by corresponding planting tube.
On the basis of technique scheme, the volume ratio of described one-level anaerobic digester and secondary anaerobic digester, three grades of anaerobic digesters, aerobic digestion tank is 3 ~ 5:1:1:1 ~ 2.
On the basis of technique scheme, described every root sewage collection conduits all stretches into the inside of one-level anaerobic digester, sewage collection conduits comprises feed-water end and water side, described feed-water end is higher than water side, feed-water end is connected with resident's sewage draining exit, water side is positioned at one-level anaerobic digester, and the distance at water side and the interior end of one-level anaerobic digester is 60 ~ 100cm.
A method of construction for intensive device, is characterized in that, comprises the following steps:
S1: determine the size of population N building ground, the generation coefficient a of sewage and per capita water consumption q, according to volume calculation formula V=aNqt/ (24*1000), first order calculation anaerobic digester, secondary anaerobic digester, the volume of three grades of anaerobic digesters and aerobic digestion tank, described t is the time that water stops in corresponding digester, the time that water stops in one-level anaerobic digester is 4 ~ 7 days, the time that water stops in secondary anaerobic digester is 2 ~ 4 days, the time that water stops in three grades of anaerobic digesters is 2 ~ 4 days, the time that water stops in aerobic digestion tank is 2 ~ 4 days, proceed to step S2,
S2: select level land as building site, building site digs one-level anaerobic digester, secondary anaerobic digester, three grades of anaerobic digesters and the aerobic digestion tank building and arrange in turn, proceeds to step S3:
S3: install barrier well and some sewage collection conduits, one end of some sewage collection conduits is connected with urbanite water consumption water port, the other end is connected with one-level anaerobic digester, install between one-level anaerobic digester and secondary anaerobic digester and connected the first communicating pipe, between secondary anaerobic digester and three grades of anaerobic digesters, be installed the second communicating pipe, at three grades, third connecting pipe is installed between anaerobic digester and aerobic digestion tank, proceeds to step S4;
S4: back-purge system is installed on top in one-level anaerobic digester, installs holder net and anaerobion packing layer in the inside of one-level anaerobic digester; In the inside of aerobic digestion tank, aerating apparatus and aerobic refining plant are installed, proceed to step S5;
S5: the outside of aerobic digestion tank is installed some drainage unit and some planting tubes, on planting tube, sowing has the plant of cleaning action, debugs described intensive device and runs to normal.
Compared with prior art, the invention has the advantages that:
(1) in the present invention for the treatment of the intensive device of domestic sewage in rural areas, comprise interconnective anaerobic digester system and aerobic digestion tank, anaerobic digester system comprises the one-level anaerobic digester, secondary anaerobic digester and the three grades of anaerobic digesters that connect in turn; Wherein, the volume calculation formula of one-level anaerobic digester, secondary anaerobic digester, three grades of anaerobic digesters and aerobic digestion tank is: V=aNqt/ (24*1000), described N are the size of population of service; Described a is the generation coefficient 0.7 ~ 0.9 of sewage; Described q is water consumption 80 ~ 120L/d per capita, described t is the time that water stops in corresponding digester, digester size is rule of thumb determined in this and prior art, easily cause floor space larger, cost is higher to be compared, invent the size that the time digested according to sewage determines digester, floor space is relatively more reasonable, and cost of manufacture is lower.
(2) in the present invention for the treatment of the intensive device of domestic sewage in rural areas, comprise the first communicating pipe, the second communicating pipe and third connecting pipe, first communicating pipe, the second communicating pipe and third connecting pipe include feed-water end and water side, each feed-water end is all higher than the water side of correspondence, distance between pushing up in all feed-water ends and corresponding digester is 15 ~ 30cm, and the water entering feed-water end is the upper strata clear water in digester; Distance at all water sides with the end in corresponding digester is 30 ~ 50cm, and after the water of water side enters next digester, be all positioned at the bottom of digester, in the process that water is moved upward by bottom, the impurity of its inside can natural subsidence occur and purify.
(3) in the present invention for the treatment of the intensive device of domestic sewage in rural areas, the height of the first communicating pipe, the second communicating pipe and third connecting pipe reduces successively, drainage flow for overflowing from stream mode, without drawing water power system, build and maintenance cost low, can save energy.
(4) in the present invention for the treatment of the intensive device of domestic sewage in rural areas, comprise ecological purification system, ecological purification system comprises planting tube, planting tube is the pipeline of roundabout bending, pipeline is planted and is implanted with plant, plant can heavy metal in planar water, N, P-compound, deep layer purifies water, beautify the environment, and increases economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation for the treatment of the intensive device of domestic sewage in rural areas in the embodiment of the present invention;
Fig. 2 is the structural representation of anaerobic digester system.
In figure: 1-sewage collection conduits, 2-barrier well, 3-anaerobic digester system, 4-aerobic digestion tank, 5-aerobic microbiological packing layer, 6-device of solar generating, 7-aerating apparatus, 8-drainage unit, 9-planting tube, 10-clear water collecting tank, 11-third connecting pipe, 12-second filter screen, 13-gravel bed, 14-back-purge system, 15-anaerobion packing layer, 16-one-level anaerobic digester, 17-first communicating pipe, 18-second communicating pipe, 19-holds in the palm net, 20-secondary anaerobic digester, 21-tri-grades of anaerobic digesters.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Shown in Figure 1, the embodiment of the present invention provides a kind of intensive device for the treatment of domestic sewage in rural areas and method of construction thereof, comprise some sewage collection conduits 1, sewage collection conduits 1 is 5 ° ~ 10 ° with the angle of horizontal direction, the diameter of sewage collection conduits 1 is 10 ~ 15cm, sewage collection conduits 1 adopts PVC to make, or adopts brick and cement to be built into.
Comprise the anaerobic digester system 3, aerobic digestion tank 4, ecological purification system and the clear water collecting tank 10 that connect in turn.
Some sewage collection conduits 1 are higher one end and are connected with urbanite water consumption water port, lower one end is connected with anaerobic digester system 3, every root sewage collection conduits 1 is closed on anaerobic digester system 3 part and is provided with barrier well 2, the inside of barrier well 2 is provided with the first filter screen, and barrier well 2 is provided with can open manhole cover.
Check valve UNICOM is provided with between every root sewage collection conduits 1 and anaerobic digester system 3, make sewage can only from pipeline flow-direction anaerobic digester system 3, and can not overflow to pipeline from anaerobic digester system 3, the foul smell produced in anaerobic digester system 3 also can not enter indoor along pipeline or waft in open-air, ensure that environment is not contaminated.
Shown in Figure 2, anaerobic digester system 3 comprises the one-level anaerobic digester 16, secondary anaerobic digester 20 and the three grades of anaerobic digesters 21 that connect in turn, every root sewage collection conduits 1 is collected in anaerobic digester outside, all stretch into the inside of one-level anaerobic digester 16 afterwards, sewage collection conduits 1 comprises feed-water end and water side, feed-water end is higher than water side, feed-water end is connected with resident's sewage draining exit, water side is positioned at one-level anaerobic digester 16, and the distance at water side and the interior end of one-level anaerobic digester 16 is 80 ~ 100cm.
One-level anaerobic digester 16 is connected by the first communicating pipe 17 with secondary anaerobic digester 20, first communicating pipe 17 comprised feed-water end and water side, feed-water end is higher than water side, feed-water end is positioned at the inside of one-level anaerobic digester 16, and the distance between pushing up in one-level anaerobic digester 16 is 15 ~ 30cm; Water side is positioned at the inside of secondary anaerobic digester 20, and the distance in secondary anaerobic digester 20 is 30 ~ 50cm at the end.
Secondary anaerobic digester 20 is connected by the second communicating pipe 18 with three grades of anaerobic digesters 21, second communicating pipe 18 comprised feed-water end and water side, feed-water end is higher than water side, feed-water end is positioned at the inside of secondary anaerobic digester 20, and the distance between pushing up in secondary anaerobic digester 20 is 15 ~ 30cm; Water side is positioned at the inside of three grades of anaerobic digesters 21, and the distance in three grades of anaerobic digesters 21 between the end is 30 ~ 50cm.
The bottom angled of one-level anaerobic digester 16 is arranged, horizontal by the angle of 30 ° ~ 45 °, the inside of one-level anaerobic digester 16 is provided with anaerobion packing layer 15, angle between anaerobion packing layer 15 and horizontal plane is 0 ° ~ 15 °, the cross-sectional area of anaerobion packing layer 15 is equal with the cross-sectional area of one-level anaerobic digester 16, and the bottom of anaerobion packing layer 15 is provided with holder net 19.Distance between the top of anaerobion packing layer 15 and one-level anaerobic digester 16 top is 80 ~ 100cm, the interior top of one-level anaerobic digester 16 is provided with back-purge system 14, the top of one-level anaerobic digester 16 is provided with biogas delivery line and biogas electricity generation apparatus, and delivery line imports the inside of biogas electricity generation apparatus.
After sewage enters the below of one-level anaerobic digester 16 along sewage collection conduits 1, the larger impurity Direct precipitation of sewage Midst density in the bottom of one-level anaerobic digester 16, form mud, water and the less impurity of density upwards float in one-level anaerobic digester 16.
Mud is discharged by spoil disposal ditch, the mud of sedimentation bottom one-level anaerobic digester 16 is after long-term anaerobic digestion effect, mud is rich in organic matter mainly element, humic acid, micronutrient element, multiple amino acids, enzyme and the beneficial microorganism such as nitrogen, phosphorus, potassium, quality is loose, soil moisture conservation performance is good, potential of hydrogen is moderate, soil can not only be improved, the needs of plant growth can also be met, be also applicable to very much the growth of loach, earthworm, yellow eel.Therefore, the mud cleared out directly as matrix support loach, earthworm, yellow eel or as fertilizer for proportion of crop planting.Not only can improve the ecological environment, developing agricultural is produced, and can also increase economic efficiency.
Because the distance between bottom anaerobion packing layer 15 and one-level anaerobic digester 16 is larger, in the process that water and the less impurity of density upwards float, partial impurities can be assembled, and then be settled down to the bottom of one-level anaerobic digester 16, all the other impurity are filtered by holder net 19 again, by impurity filtering larger for volume, obtain water, after microorganism and the material miscible with water, by anaerobion packing layer 15, anaerobion packing layer 15 can organism in water of decomposition, reduce Organic substance in water content, obtain rough purification water and methane gas, methane can be derived along delivery line, fuel is used as after being cleaned.
One-level anaerobic digester 16 is 3 ~ 5:1:1:1 ~ 2 with the volume ratio of secondary anaerobic digester 20, three grades of anaerobic digesters 21, aerobic digestion tank 4, and physical features reduces successively.The feed-water end of communicating pipe 18 sewage collection conduits 1, first communicating pipe 17, second and third connecting pipe 11 reduces successively.
Sewage is after one-level anaerobic digester 16 purifies 4 ~ 6 days, secondary anaerobic digester 20 is entered along the first communicating pipe 17, three grades of anaerobic digesters 21 are entered along the second communicating pipe 18 after digested 2 ~ 4 days at secondary anaerobic digester 20, within digested 2 ~ 4 days, automatically enter aerobic digestion tank 4 afterwards at three grades of anaerobic digesters 21, sewage residence time in aerobic digestion tank 4 is 2 ~ 4 days.
Because one-level anaerobic digester 16, secondary anaerobic digester 20 and three grades of anaerobic digesters 21 are all in air-tight state, oxygen content is lower, makes the pernicious bacteria in sewage be difficult to existence, and then reduces the content of the harmful bacteria in sewage.
Three grades of anaerobic digesters 21 are connected with aerobic digestion tank 4 by third connecting pipe 11, third connecting pipe 11 comprises feed-water end and water side, feed-water end is higher than water side, distance between feed-water end and the interior top of three grades of anaerobic digesters 21 is 15 ~ 30cm, and the distance at water side and the interior end of aerobic digestion tank 4 is 30 ~ 50cm.
The outer setting of aerobic digestion tank 4 has device of solar generating 6, the inside of aerobic digestion tank 4 is provided with aerating apparatus 7 and aerobic refining plant, aerating apparatus 7 is positioned at the top of aerobic refining plant, aerating apparatus 7 is electrically connected with device of solar generating 6, aerating apparatus 7 is electrically connected with biogas electricity generation apparatus, aerobic refining plant comprises and setting gradually from top to bottom and aerobic microbiological packing layer 5, stalk carbon-coating, gravel bed 13 and the second filter screen 12, and the surface-area of aerobic microbiological packing layer 5 is equal with the cross-sectional area of aerobic digestion tank 4.
Pollutant component can decompose and transform by stalk carbon-coating, gravel bed 13 and the second filter screen 12 further, and water quality is purified further, and water transparency gets a promotion.
The volume of one-level anaerobic digester 16, secondary anaerobic digester 20, three grades of anaerobic digesters 21 and aerobic digestion tank 4 all calculates according to following formula:
V＝aNqt/24*1000
In this formula: V---volume, unit is m
3;
The size of population of N---service;
The generation coefficient of a---sewage;
Q---water consumption per capita, liter/sky (L/d);
The time that t---water stops in this digester, sky (d);
24*1000---gain factor.
Under China's existence conditions, q is 80 ~ 120L/d, a is 0.7 ~ 0.9.
The time that the time that the time that the time that water stops in one-level anaerobic digester 16 is 4 ~ 7 days, water stops in secondary anaerobic digester 20 is 2 ~ 4 days, water stops in three grades of anaerobic digesters 21 is 2 ~ 4 days, water stops in aerobic digestion tank 4 is 2 ~ 4 days.
The method of calculation of digester volume in intensive device, digester draws together interconnective anaerobic digester system 3 and aerobic digestion tank 4, and anaerobic digester system 3 comprises the one-level anaerobic digester 16, secondary anaerobic digester 20 and the three grades of anaerobic digesters 21 that connect in turn.
The time t that the time t that the time t that in one-level anaerobic digester 16, sewage stops is 4 ~ 7 days, sewage stops in secondary anaerobic digester 20 is that the time t that in 2 ~ 4 days, three grades anaerobic digesters 21, sewage stops is 2 ~ 4 days, sewage stops in aerobic digestion tank 4 is 2 ~ 4 days.
Ecological purification system comprises some drainage unit 8 and some planting tubes 9, each drainage unit 8 is provided with some drainage tubes, each drainage tube is all corresponding with a planting tube 9, each drainage tube is one end and is connected with aerobic digestion tank 4, the other end is connected with clear water collecting tank by corresponding planting tube 9, planting tube 9 is the pipeline of roundabout bending, and planting tube 9 has some implantation hole, plants and be implanted with hydroponic plant in implantation hole.
Each planting tube 9 hydroponic plant closed in the implantation hole in drainage tube 10m is at least one in bracketplant, Mirabilis jalapa, pale reddish brown jade hairpin and Herba Commelinae, and each planting tube 9 and the drainage tube distance hydroponic plant be greater than in the implantation hole of 10m are at least one in Chinese celery, romaine lettuce, rape, Plantula Brassicae chinensis, witloof, Lettuce, tomato and cucumber.
Containing a large amount of metal-ions transportation albumen on the cytolemma of bracketplant, Mirabilis jalapa, pale reddish brown jade hairpin and Herba Commelinae: CDF family protein, NRAMP family protein and ZIP family protein, under the effect of metal-ions transportation albumen, plant has stronger absorption, transportcapacity to metal ion, the metal ion that plant absorbs mainly is enriched on the epidermal hair of vacuole, cell walls and epidermal leaf cells, part exists with chelating bodily form formula, metal ion can not enter the inside of vegetable cell, can not damage plant.
Bracketplant, Mirabilis jalapa, pale reddish brown jade hairpin and Herba Commelinae can not only be beautified the environment, and can increase economic benefit.
The growth cycle of Chinese celery, romaine lettuce, rape, Plantula Brassicae chinensis, witloof, Lettuce, tomato and cucumber is shorter, and biomass is large, and output is high, significantly improves space availability ratio, adds Agricultural Output, facilitates agricultural development.
A method of construction for intensive device, comprises the following steps:
A, determine the size of population N building ground, the generation coefficient a of sewage and per capita water consumption q, according to volume calculation formula V=aNqt/ (24*1000), first order calculation anaerobic digester 16, secondary anaerobic digester 20, the volume of three grades of anaerobic digesters 21 and aerobic digestion tank 4, described t is the time that water stops in corresponding digester, the time that water stops in one-level anaerobic digester 16 is 4 ~ 7 days, the time that water stops in secondary anaerobic digester 20 is 2 ~ 4 days, the time that water stops in three grades of anaerobic digesters 21 is 2 ~ 4 days, the time that water stops in aerobic digestion tank 4 is 2 ~ 4 days, proceed to step B.
B: select level land as building site, building site digs one-level anaerobic digester 16, secondary anaerobic digester 20, three grades of anaerobic digesters 21 and the aerobic digestion tank 4 building and arrange in turn, one-level anaerobic digester 16, secondary anaerobic digester 20, three grades of anaerobic digesters 21 and aerobic digestion tank 4 inwall coated with water blocking material and after drying, injected clear water, place 3 days, judge to occur without infiltration, proceed to step C.
C: install barrier well 2 and some sewage collection conduits 1, one end of some sewage collection conduits 1 is connected with urbanite water consumption water port, the other end is connected with one-level anaerobic digester 16, install between one-level anaerobic digester 16 and secondary anaerobic digester 20 and connected first communicating pipe 17, second communicating pipe 18 was installed between secondary anaerobic digester 20 and three grades of anaerobic digesters 21, between three grades of anaerobic digesters 21 and aerobic digestion tank 4, third connecting pipe 11 is installed, proceeds to step D.
D: install biogas electricity generation apparatus in the outside of one-level anaerobic digester 16, in one-level anaerobic digester 16, back-purge system 14 is installed on top, installs holder net 19 and anaerobion packing layer 15 in the inside of one-level anaerobic digester 16; Aerobic digestion tank 4 top install device of solar generating 6, in the inside of aerobic digestion tank 4, aerating apparatus 7 and aerobic refining plant are installed, device of solar generating 6 is electrically connected with aerating apparatus 7, aerating apparatus 7 is electrically connected with biogas electricity generation apparatus, proceeds to step e;
E: some drainage unit 8 and some planting tubes 9 are installed in the outside of aerobic digestion tank 4, on planting tube 9, sowing has the plant of cleaning action, debugs described intensive device to normally running and come into operation.
For the treatment of the sewage after the intensive device process of domestic sewage in rural areas in employing the present invention, the one-level grade standard of " integrated wastewater discharge standard " GB 8978-2006 can be reached.
Below, by 1 embodiment, the present invention is described in detail
Embodiment 1
Using Hubei, small-sized village is as test point, it is 100 people that population is resided in this village, one-level anaerobic digester 16 is of a size of 400cm*350cm*400cm, secondary anaerobic digester 20 is of a size of 250cm*250cm*260cm, three grades of anaerobic digesters 21 are of a size of 300cm*300cm*180cm, and aerobic digestion tank 4 is of a size of 400cm*300cm*100cm.
Sewage collection conduits 1 adopts diameter to be the pvc pipe of 15cm, sewage collection conduits 1 directly connects each resident family sanitary sewage water port, barrier well 2 is rectangular, it is of a size of 50cm*80cm*30cm, the inside of barrier well 2 is provided with filtering net 12, and the first filter screen adopts aperture to be the Stainless Steel Cloth of 1.5cm*1.5cm; One-level anaerobic digester 16, secondary anaerobic digester 20, three grades of anaerobic digesters 21 and aerobic digestion tank 4 all adopt fragment of brick and cement to be built into, wherein, first communicating pipe 17 road, second communicating pipe 18 road and third connecting pipe 11 road all select the PVC pipeline of diameter 15cm.
Drainage unit 8 quantity in the present embodiment is 10, and the quantity of planting tube 9 is 80, and each drainage unit 8 is provided with 8 drainage tubes, hydroponic plant selects flower of Chinese Narcissus, romaine lettuce and garlic, from hydroponic system flow out clear water directly as breeding fish and field irrigation.
This Sewage treatment systems build process is simple, good purification, COD (ChemicalOxygen Demand, chemical oxygen demand (COD)), TN (total nitrogen, total nitrogen), TP (totalphosphorus), the clearance of total phosphorus all reaches more than 80%, runs to detect water outlet water quality detection after one month and the results are shown in Table 1.
It can thus be appreciated that, for the treatment of the intensive device of domestic sewage in rural areas in the present invention, domestic sewage in rural areas can be purified preferably.
Table 1 intensive sanitary sewage disposal engineering detecting data
The present invention is not limited to above-mentioned embodiment, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this specification sheets belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1., for the treatment of an intensive device for domestic sewage in rural areas, comprising:
Some sewage collection conduits (1);
The anaerobic digester system (3) connected in turn, aerobic digestion tank (4) and ecological purification system; Described some sewage collection conduits (1) are one end and are connected with urbanite water consumption water port, and the other end is connected with anaerobic digester system (3); Described anaerobic digester system (3) comprise connect in turn one-level anaerobic digester (16), secondary anaerobic digester (20) and three grades of anaerobic digesters (21); Meanwhile, it is characterized in that:
The volume calculation formula of described one-level anaerobic digester (16), secondary anaerobic digester (20), three grades of anaerobic digesters (21) and aerobic digestion tank (4) is: V=aNqt/ (24*1000), described N are the size of population of service; Described a is the generation coefficient 0.7 ~ 0.9 of sewage; Described q is water consumption 80 ~ 120L/d per capita, described t is the time that water stops in corresponding digester, and the time that the time that the time that the time that water stops in the one-level anaerobic digester (16) is 4 ~ 7 days, water stops in secondary anaerobic digester (20) is 2 ~ 4 days, water stops in three grades of anaerobic digesters (21) is 2 ~ 4 days, water stops in aerobic digestion tank (4) is 2 ~ 4 days.
2. as claimed in claim 1 for the treatment of the intensive device of domestic sewage in rural areas, it is characterized in that: the inside of described one-level anaerobic digester (16) is provided with anaerobion packing layer (15), described anaerobion packing layer (15) is parallel with one-level anaerobic digester top, and the distance between the top of described anaerobion packing layer (15) and one-level anaerobic digester (16) top is 80 ~ 100cm.
3. as claimed in claim 1 for the treatment of the intensive device of domestic sewage in rural areas, it is characterized in that: described one-level anaerobic digester (16) is connected by the first communicating pipe (17) with secondary anaerobic digester (20), described first communicating pipe (17) comprises feed-water end and water side, described feed-water end is higher than water side, described feed-water end is positioned at the inside of one-level anaerobic digester (16), described water side is positioned at the inside of secondary anaerobic digester (20), distance between pushing up in described feed-water end and one-level anaerobic digester (16) is 15 ~ 30cm, distance at water side and secondary anaerobic digester (20) the interior end is 30 ~ 50cm.
4. as claimed in claim 3 for the treatment of the intensive device of domestic sewage in rural areas, it is characterized in that: described secondary anaerobic digester (20) is connected by the second communicating pipe (18) with three grades of anaerobic digesters (21), described second communicating pipe (18) comprises feed-water end and water side, described feed-water end is higher than water side, described feed-water end is positioned at the inside of secondary anaerobic digester (20), described water side is positioned at the inside of three grades of anaerobic digesters (21), distance between pushing up in described feed-water end and secondary anaerobic digester (20) is 15 ~ 30cm, distance at described water side and three grades of anaerobic digester (21) interior ends is 30 ~ 50cm.
5. as claimed in claim 1 for the treatment of the intensive device of domestic sewage in rural areas, it is characterized in that: described aerobic digestion tank (4) is connected with three grades of anaerobic digesters (21) of anaerobic digester system (3) by third connecting pipe (11), described third connecting pipe (11) comprises feed-water end and water side, described feed-water end is higher than water side, distance between pushing up in described feed-water end and three grades of anaerobic digesters (21) is 15 ~ 30cm, and the distance at described water side and aerobic digestion tank (4) the interior end is 15 ~ 30cm.
6. as claimed in claim 1 for the treatment of the intensive device of domestic sewage in rural areas, it is characterized in that: the inside of described aerobic digestion tank (4) is provided with aerating apparatus (7) and aerobic refining plant, described aerating apparatus (7) is positioned at the top of aerobic refining plant, described aerobic refining plant comprises and setting gradually from top to bottom and aerobic microbiological packing layer (5), stalk carbon-coating, gravel bed (13) and filter screen (12), aerobic microbiological packing layer (5) and the well distance of supporting are 30 ~ 50cm at digester (4) the interior end, its cross section is square, its surface-area is equal with good sample digester floorage.
7. as claimed in claim 1 for the treatment of the intensive device of domestic sewage in rural areas, it is characterized in that: described ecological purification system comprises some drainage unit (8) and some planting tubes (9), (8) are provided with some drainage tubes to each drainage unit, described each drainage tube is all corresponding with a planting tube (9), described each drainage tube is one end and is connected with aerobic digestion tank (4), and the other end is connected with clear water collecting tank by corresponding planting tube (9).
8. the intensive device for the treatment of domestic sewage in rural areas according to any one of claim 1 to 7, is characterized in that: the volume ratio of described one-level anaerobic digester (16) and secondary anaerobic digester (20), three grades of anaerobic digesters (21), aerobic digestion tank (4) is 3 ~ 5:1:1:1 ~ 2.
9. the intensive device for the treatment of domestic sewage in rural areas according to any one of claim 1 to 7, it is characterized in that: described every root sewage collection conduits (1) all stretches into the inside of one-level anaerobic digester (16), sewage collection conduits (1) comprises feed-water end and water side, described feed-water end is higher than water side, feed-water end is connected with resident's sewage draining exit, water side is positioned at one-level anaerobic digester (16), and the distance at the interior end of water side and one-level anaerobic digester (16) is 60 ~ 100cm.
10., for the treatment of a method of construction for the intensive device of domestic sewage in rural areas, it is characterized in that, comprise the following steps:
S1: determine the size of population N building ground, the generation coefficient a of sewage and per capita water consumption q, according to volume calculation formula V=aNqt/ (24*1000), first order calculation anaerobic digester (16), secondary anaerobic digester (20), the volume of three grades of anaerobic digesters (21) and aerobic digestion tank (4), described t is the time that water stops in corresponding digester, the time that water stops in one-level anaerobic digester (16) is 4 ~ 7 days, the time that water stops in secondary anaerobic digester (20) is 2 ~ 4 days, the time that water stops in three grades of anaerobic digesters (21) is 2 ~ 4 days, the time that water stops in aerobic digestion tank (4) is 2 ~ 4 days, proceed to step S2,
S2: select level land as building site, building site digs build arrange in turn one-level anaerobic digester (16), secondary anaerobic digester (20), three grades of anaerobic digesters (21) and aerobic digestion tank (4), proceed to step S3:
S3: install some sewage collection conduits (1), one end of described sewage collection conduits (1) is connected with urbanite water consumption water port, the other end is connected with one-level anaerobic digester (16), install between one-level anaerobic digester (16) and secondary anaerobic digester (20) and connect the first communicating pipe (17), between secondary anaerobic digester (20) and three grades of anaerobic digesters (21), be installed the second communicating pipe (18), between three grades of anaerobic digesters (21) and aerobic digestion tank (4), third connecting pipe (11) is installed, proceed to step S4,
S4: install back-purge system (14) on the interior top of one-level anaerobic digester (16), install holder net (19) and anaerobion packing layer (15) in the inside of one-level anaerobic digester (16); In the inside of aerobic digestion tank (4), aerating apparatus (7) and aerobic refining plant are installed, proceed to step S5;
S5: the outside of aerobic digestion tank (4) is installed some drainage unit (8) and some planting tubes (9), has the plant of cleaning action in the upper sowing of planting tube (9).
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