CN105923790A - Composite horizontal subsurface flow combined artificial wetland system and method - Google Patents
Composite horizontal subsurface flow combined artificial wetland system and method Download PDFInfo
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- CN105923790A CN105923790A CN201610430804.4A CN201610430804A CN105923790A CN 105923790 A CN105923790 A CN 105923790A CN 201610430804 A CN201610430804 A CN 201610430804A CN 105923790 A CN105923790 A CN 105923790A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to a composite horizontal subsurface flow combined artificial wetland system and method. The system comprises a pre-aeration tank and a plurality of horizontal subsurface flow artificial wetland tanks connected with the pre-aeration tank, wherein a water distributing plate is arranged between the pre-aeration tank and the first horizontal subsurface flow artificial wetland tank connected with the pre-aeration tank, a biological trench is arranged between the first horizontal subsurface flow artificial wetland tank and a second horizontal subsurface flow artificial wetland tank, a biological trench is arranged between every two subsequent horizontal subsurface flow artificial wetland tanks from the second horizontal subsurface flow artificial wetland tank to the last horizontal subsurface flow artificial wetland tank, and a biological trench is arranged at the tail of the last horizontal subsurface flow artificial wetland tank. Rural domestic wastewater is guided into the pre-aeration tank, intermittent pre-aeration is performed on the rural domestic wastewater in the pre-aeration tank, then the wastewater enters the first horizontal subsurface flow artificial wetland tank through the water distributing plate in a multipoint manner, part of ammonia and nitrogen in the rural domestic wastewater is converted into nitrate nitrogen after the wastewater is filtered by the biological trench between the first horizontal subsurface flow artificial wetland tank and the second horizontal subsurface flow artificial wetland tank, the filtered water enters the subsequent horizontal subsurface flow artificial wetland tanks and is treated and filtered by the biological trenches and discharged, and the nitrate nitrogen is further removed through denitrification in the alternate horizontal subsurface flow artificial wetland tanks and biological trenches.
Description
Technical field
The present invention relates to combined type artificial wetland system and method, a kind of be applicable to answering of removing nitrogen domestic sewage in rural areas
Close horizontal drowned flow combined type artificial wetland system and method.
Background technology
At present, China has more than 60 ten thousand administrative villages, more than 250 ten thousand natural villages, nearly 800,000,000 people of resident.In recent years, along with new agriculture
Enforcement that village builds and rural economy flourish, strength of human activities continues to increase, and natural, ecological causes bigger pressure.
Domestic sewage in rural areas enters neighbouring water body, exacerbates the body eutrophication in local and relevant waters.Rural domestic sewage treatment is compeled
At the eyebrows and eyelashes.Although artificial swamp is proved to be to process one of dirty effective technique of (give up) water in rural area, but still exist floor space greatly,
Nitrogen treatment effeciency is low, easily block, and generally requires the problems such as intermittent duty.Therefore, the combination that research is efficient and floor space is little
Formula artificial swamp nitrogen processing system is the key solving its practicality, has certain science and using value.
Inorganic filler drowned flow artificial wet land as a kind of new technique risen soon in China, occurs in that certain problem, presses down
Having made its popularization and application, three the most prominent problems are: first, process load the lowest, generally 0.2-0.4m3/m2D so that
Floor space is too big, is unfavorable for promoting in today of land used growing tension；Second, long-lasting being difficult to keeps, and artificial swamp is being built
In a period of time after one-tenth, treatment effect is very good, but from present from the point of view of the wetland run, all exists in various degree
Touting problems, causes treatment effect not to be guaranteed, and ultimately results in the process failure of whole system；3rd, interal supplying oxygen is not
Foot, microbiological anaerobic degradation of contaminant needs sufficient suitable carbon source, and the composition in sewage tends not to meet, and affects nitre state
The removal effect of nitrogen, therefore, it is to solve its practicality that the artificial swamp nitrogen that research is efficient and floor space is little processes combined system
Key.
Summary of the invention
Technical problem: it is an object of the invention to the weak point overcome in prior art, it is provided that a kind of compound horizontal drowned flow group
Box-like artificial wet land system and method, solve the floor space problem big, susceptible to plugging that inorganic filler drowned flow artificial wet land is common.
Technical scheme: the compound horizontal drowned flow combined type artificial wetland system of the present invention, including preaeration tank and preaeration tank phase
The multiple horizontal drowned flow artificial wet land ponds connected, are provided with water distribution between the first horizontal drowned flow artificial wet land pond one that preaeration tank connects
Plate, with last horizontal drowned flow between the subsequent horizontal drowned flow artificial wet land pond two that first horizontal drowned flow artificial wet land pond one connects
Artificial swamp pond afterbody is equipped with biological ditch；Pine tree ball and the filler of barbed chestnut shell of easy to be filmed it is filled with in described biological ditch；
The degree of depth in the compound horizontal drowned flow combined type artificial wetland pond being made up of preaeration tank, multiple horizontal drowned flow artificial wet land pond be 0.6～
0.8m, a width of 3～5m, hydraulic gradient is 1%, and i.e. every 100m water level decreasing 1m, along compound horizontal drowned flow combined type people
The a length of water (flow) direction of work wetland, a length of the 3 of preaeration tank～5m, a length of the 3～5m of first horizontal subsurface flow wetland pond one,
A length of the 6～10m of follow-up horizontal subsurface flow wetland pond two.
The optimum length of described preaeration tank is 4m.
The optimum length in described horizontal drowned flow artificial wet land pond one is 4m.
The optimum length in described horizontal drowned flow artificial wet land pond two is 8m.
The optimum length of described biological ditch is 2.0m.
In described biological ditch, the pine tree ball of filler and the mass ratio of barbed Chinese chestnut are 1:3, and the height of filling is 0.6m.
The using method of a kind of undercurrent combined type artificial wetland system as flat in above-mentioned Compound Water: first domestic sewage in rural areas is introduced pre-
In aeration tank, domestic sewage in rural areas in preaeration tank carrying out batch (-type) preaeration, the sewage after batch (-type) preaeration is through water distributing plate
Multipoint water feeding enters in first horizontal drowned flow artificial wet land pond, then filters through biological ditch, makes the part ammonia in domestic sewage in rural areas
Nitrogen transfers nitrate nitrogen to, and filtered water enters back into follow-up multiple horizontal drowned flow artificial wet land ponds two and biological ditch processes and the row of filtration
Go out, make nitrate nitrogen be removed by denitrification in horizontal subsurface flow wetland pond alternately and biological irrigation canals and ditches further.
The time of described batch (-type) preaeration is 0.5h, and gap is 0.5h.
Beneficial effect: owing to have employed technique scheme, the present invention compared with prior art has the advantage that
(1) the easy blockage problem of drowned flow artificial wet land is solved.By arranging every a segment distance in horizontal subsurface flow wetland water (flow) direction
One irrigation canals and ditches, not only can reach water distribution uniformity but also can avoid the generation of clogging of horizontal subsurface flow wetland as far as possible.
(2) problem that artificial swamp is low to pollutant treatment effeciency, floor space is big is solved.By arranging at horizontal subsurface flow wetland
Irrigation canals and ditches in add the biologic packing material of easy to be filmed, improve system sewage treating efficiency, reduce artificial swamp to pollutant treatment effeciency
The problem that low, floor space is big.
(3) problem that horizontal subsurface flow wetland interal supplying oxygen is not enough and denitrifying carbon source is not enough is solved.Water inlet is carried out batch (-type) pre-exposure
Gas and add barbed chestnut shell and pine tree ball biologic packing material in the trench, solve internal system for hypoxgia and denitrification needed for
Carbon resource shortage problem；Solve artificial swamp low to nitrogen treatment effeciency, the problem that floor space is big.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In figure: 1-preaeration tank；2-water distributing plate；3-drowned flow artificial wet land pond one；4-biology ditch；5-drowned flow artificial wet land pond two；
6-filler.
Detailed description of the invention
The invention will be further described for embodiment in Structure Figure below:
The compound horizontal drowned flow combined type artificial wetland system of the present invention, is mainly connected with preaeration tank 1 by preaeration tank 1
Multiple horizontal drowned flow artificial wet land ponds constitute, preaeration tank 1 connect first horizontal drowned flow artificial wet land pond 1 between be provided with
Water distributing plate 2, first horizontal drowned flow artificial wet land pond 1 connect subsequent horizontal drowned flow artificial wet land pond 25 between and last
Individual horizontal drowned flow artificial wet land pond afterbody is equipped with biological ditch 4；The optimum length of biological ditch 4 is 2.0m.Described biological ditch 4
Inside it is filled with pine tree ball and the filler of barbed chestnut shell of easy to be filmed；The pine tree ball of filler and the quality of barbed Chinese chestnut in biological ditch 4
Ratio is 1:3, and the height of filling is 0.6m.The compound horizontal drowned flow being made up of preaeration tank, multiple horizontal drowned flow artificial wet land pond
The degree of depth in combined type artificial wetland pond is 0.6～0.8m, a width of 3～5m, and hydraulic gradient is 1%, i.e. every 100m water level decreasing
1m, along the compound a length of water (flow) direction of horizontal drowned flow combined type artificial wetland, a length of the 3 of preaeration tank 1～5m, pre-exposure
The optimum length in gas pond 1 is 4m.A length of the 3～5m of first horizontal subsurface flow wetland pond 1, horizontal drowned flow artificial wet land pond one
The optimum length of 3 is 4m.A length of the 6～10m of follow-up horizontal subsurface flow wetland pond 25, horizontal drowned flow artificial wet land pond 25
Optimum length be 8m.
The using method of the compound horizontal drowned flow combined type artificial wetland system of the present invention: first domestic sewage in rural areas is introduced pre-exposure
In gas pond 1, domestic sewage in rural areas in preaeration tank 1 carrying out batch (-type) preaeration, the time of described batch (-type) preaeration is
0.5h, gap is 0.5h.Sewage after batch (-type) preaeration enters first horizontal drowned flow artificial wet land through water distributing plate 2 multipoint water feeding
In pond, then filtering through biological ditch 4, make the part ammonia nitrogen in domestic sewage in rural areas transfer nitrate nitrogen to, filtered water enters back into
Follow-up multiple horizontal drowned flow artificial wet land ponds 25 and biological ditch 4 process and filter discharge, makes nitrate nitrogen further alternately
Horizontal subsurface flow wetland pond and biological irrigation canals and ditches are removed by denitrification.
Example 1: the degree of depth of the compound horizontal drowned flow combined type artificial wetland being made up of preaeration tank, drowned flow artificial wet land pond is
0.8m, a width of 4m, hydraulic gradient is 1%, a length of 4m in horizontal subsurface flow wetland pond 1, follow-up horizontal subsurface flow wetland
The a length of 8m in pond 25.Between horizontal subsurface flow wetland, 2m arranges biological irrigation canals and ditches length and width and is deeply respectively 4m 2.0m 0.8m,
So that horizontal subsurface flow wetland and biological irrigation canals and ditches are alternately arranged, in irrigation canals and ditches, add the pine tree ball of easy to be filmed and barbed chestnut shell filler,
Pine tree ball and barbed Chinese chestnut mass ratio are 1:3, and filling height is 0.6m, while reaching to reduce short stream, improve biological ditch
The denitrification effect of nitrate nitrogen in canal sewage, and provide carbon source purpose for follow-up horizontal drowned flow artificial wet land.Horizontal subsurface flow wetland shape
Shape length-width ratio 2:1, prevents from short stream in current wetland, and on the direction that horizontal subsurface flow wetland is wide, 4m sets up a water distributing plate also
With multipoint water feeding mode water distribution.
First domestic sewage in rural areas in preaeration tank being carried out batch (-type) preaeration, aeration time is 0.5h, and gap is 0.5h；In advance
Aeration tank body length and width are respectively 4m 2.0m 0.8m deeply, make the ammonia nitrogen in domestic sewage in rural areas transfer nitrate nitrogen to.Level
The current wetland degree of depth is 0.8m, and effective depth is set to 0.6m, and hydraulic gradient is 1%, i.e. every 100m water level decreasing 1m, along
Horizontal subsurface flow wetland water (flow) direction is set to after 4m, 8m and arranges one length and width every 8m and be deeply respectively 4m 2.0m
0.8m irrigation canals and ditches, to reach to reduce the probability of short stream and obstruction, the intake-outlet of irrigation canals and ditches is arranged alternately so that water distribution uniformity, at ditch
Adding the pine tree ball of easy to be filmed and barbed chestnut shell filler, pine tree ball and barbed Chinese chestnut mass ratio in canal is 1:3, filling height
For 0.6m, to improve the denitrification effect of nitrate nitrogen in sewage, and provide carbon source for follow-up horizontal drowned flow artificial wet land.
Claims (8)
1. a compound horizontal drowned flow combined type artificial wetland system, it is characterised in that: it includes preaeration tank (1) and pre-exposure
Multiple horizontal drowned flow artificial wet land ponds that gas pond (1) is connected, the first horizontal drowned flow artificial wet land that preaeration tank (1) connects
Water distributing plate (2), the subsequent horizontal drowned flow artificial that first horizontal drowned flow artificial wet land pond one (3) connects it is provided with between pond one (3)
It is equipped with biological ditch (4) with last horizontal drowned flow artificial wet land pond afterbody between wetland pond two (5)；Described biological ditch (4)
Inside it is filled with pine tree ball and the filler of barbed chestnut shell of easy to be filmed；It is made up of preaeration tank, multiple horizontal drowned flow artificial wet land pond
The degree of depth in compound horizontal drowned flow combined type artificial wetland pond be 0.6～0.8m, a width of 3～5m, hydraulic gradient is 1%, the most often
100m water level decreasing 1m, along the compound a length of water (flow) direction of horizontal drowned flow combined type artificial wetland, the length of preaeration tank (1)
Degree is 3～5m, a length of the 3～5m of first horizontal subsurface flow wetland pond one (3), follow-up horizontal subsurface flow wetland pond two (5)
A length of 6～10m.
One the most according to claim 1 is combined horizontal drowned flow combined type artificial wetland system, it is characterised in that: described pre-
The optimum length of aeration tank (1) is 4m.
One the most according to claim 1 is combined horizontal drowned flow combined type artificial wetland system, it is characterised in that: described
The optimum length in horizontal drowned flow artificial wet land pond one (3) is 4m.
One the most according to claim 1 is combined horizontal drowned flow combined type artificial wetland system, it is characterised in that: described
The optimum length in horizontal drowned flow artificial wet land pond two (5) is 8m.
One the most according to claim 1 is combined horizontal drowned flow combined type artificial wetland system, it is characterised in that: described
The optimum length of biological ditch (4) is 2.0m.
A kind of compound horizontal drowned flow combined type artificial wetland system, it is characterised in that: institute
Stating the pine tree ball of filler and the mass ratio of barbed Chinese chestnut in biological ditch (4) is 1:3, and the height of filling is 0.6m.
7. the using method of the most compound horizontal drowned flow combined type artificial wetland system, it is characterised in that:
First domestic sewage in rural areas is introduced in preaeration tank (1), domestic sewage in rural areas in preaeration tank (1) is carried out batch (-type) pre-
Aeration, the sewage after batch (-type) preaeration is in water distributing plate (2) multipoint water feeding enters first horizontal drowned flow artificial wet land pond, then
Filtering through biological ditch (4), make the part ammonia nitrogen in domestic sewage in rural areas transfer nitrate nitrogen to, filtered water enters back into follow-up many
Individual horizontal drowned flow artificial wet land pond two (5) and biological ditch (4) process and filter discharge, make nitrate nitrogen further at water alternately
Flat current wetland pond and biological irrigation canals and ditches are removed by denitrification.
It is combined the using method of horizontal drowned flow combined type artificial wetland system the most according to claim 7, it is characterised in that: institute
The time of the batch (-type) preaeration stated is 0.5h, and gap is 0.5h.
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| CN201610430804.4A CN105923790A (en) | 2016-06-16 | 2016-06-16 | Composite horizontal subsurface flow combined artificial wetland system and method |
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| CN201610430804.4A CN105923790A (en) | 2016-06-16 | 2016-06-16 | Composite horizontal subsurface flow combined artificial wetland system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112939356A (en) * | 2021-02-05 | 2021-06-11 | 河海大学 | Undercurrent artificial wetland combined ecological system for advanced treatment of printing and dyeing tail water |
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Application publication date: 20160907 |