CN100371269C - Method and installation for treating domestic sewage by using artificial wetland - Google Patents
Method and installation for treating domestic sewage by using artificial wetland Download PDFInfo
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- CN100371269C CN100371269C CNB2006100857886A CN200610085788A CN100371269C CN 100371269 C CN100371269 C CN 100371269C CN B2006100857886 A CNB2006100857886 A CN B2006100857886A CN 200610085788 A CN200610085788 A CN 200610085788A CN 100371269 C CN100371269 C CN 100371269C
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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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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to technology and a device for treating domestic sewage by adopting composite vertical current-vertical deflection current undercurrent wetland technology. The whole technology is mainly composed of pretreatment and an artificial wetland system, wherein the pretreatment is mainly carried out for removing floating matter and suspended matter capable of deposition in primary domestic sewage, and the artificial wetland system is formed by the series connection of composite vertical current and vertical deflection current undercurrent wetland. The technology and the device have the characteristic of high efficiency for removing COD, nitrogen and phosphorus in domestic sewage.
Description
Technical field
The present invention relates to a kind of domestic sewage processing method and device thereof, especially a kind of method and device thereof that utilizes artificial swamp to handle sanitary sewage.
Background technology
Artificial swamp is the novel waste water treatment process that grows up the 1970s and 1980s in last century, because of it has high-level efficiency, low investment, low running expense, the low technology of keeping, and, in worldwide, obtained application more and more widely to advantage such as the removal effect of nitrogen, phosphorus is good.
In general artificial swamp mainly is made up of artificial substratum, waterplant and microorganism.In artificial wet land system, pollutent is physics, chemistry and the biological triple coordinative roles by filler one microorganism one plant complex ecosystem mainly, realize efficient purification to waste water by filtration, absorption, precipitation, ion-exchange, plant absorbing and microbiological degradation.Simultaneously, by the biomass geochemistry circulation of nutritive substance and moisture, promote the green plants growth and make its volume increase, the resource utilization of realization waste water and innoxious.
According to the difference of water flow mode in the wetland, artificial swamp mainly is divided into three types: surperficial streaming, undercurrent type and vertical streaming.
Surface current artificial wetland and natural wetland are similar, and the depth of water is more shallow relatively, and generally at 0.2～0.4m, waste water is from wetland surface current mistake.Such artificial swamp has less investment, simple to operate, advantage such as working cost is low, but floor space is bigger, hydraulic loading rate is less, soil removability is limited. and oxygen mainly provides by the transmission and the photosynthesis of plants of water surface diffusion, root system of plant in the free flow surface constructed wetland, but transmittability is very limited.The operation of such wet land system is subjected to weather effect bigger, and the phenomenon of multiplying mosquitos and flies is arranged summer.
Current wetland is made up of one or more bed of packings, bed body filling substrate, and the bed end, be provided with impervious barrier to prevent groundwater pollution, and sewage flows in the space of filler, and no free-water level exists.Compare with free flow surface constructed wetland, the hydraulic load of horizontal drowned flow artificial wet land is big and pollution load is big, removal effect to contamination indexs such as BOD, COD, SS, heavy metals is good, and foul smelling and multiply the mosquitos and flies phenomenon seldom, good heat insulation effect is also arranged winter, yet the oxygen in the current wetland mainly relies on the supply of root system of plant, so the nitrification of this type wetland is not ideal enough.At present, horizontal drowned flow artificial wet land is extensive use of by countries such as the U.S., Japan, Australia, Germany, Sweden, Britain, Holland and Norway.
In the vertical-flow wetland, sewage flows to the bottom of bed of packings from the wetland surface longitudinal, oxygen can enter artificial wet land system by atmospheric diffusion and plant transmission. and the nitrated ability of vertical subsurface flow wetland is higher than the horizontal drowned flow wetland, can be used for handling the higher sewage of ammonia-nitrogen content. its shortcoming is not as the horizontal drowned flow artificial wet land system to organic removal ability, dried/waterflooding time that falls is longer, the control relative complex has the phenomenon of multiplying mosquitos and flies summer.
The applicant has proposed a kind of new artificial wet land sewage treating process and device, and this device has denitrification effect preferably, can be for promoting the use of.
Summary of the invention
The objective of the invention is at the artificial swamp of existing single-mode handle that sanitary sewage exists or nitrification not good, perhaps the insufficient problem of denitrification provides a kind of method and device thereof that utilizes artificial swamp to handle sanitary sewage.
Technical scheme of the present invention is:
A kind of method of utilizing artificial swamp to handle sanitary sewage, it may further comprise the steps:
At first sanitary sewage is carried out pre-treatment through grid and settling tank, but remove wherein floating matter and sedimentation suspended substance;
To introduce in the first step composite vertical current artificial wetland through pretreated sanitary sewage then, what make its process vertical partition plate one side is implanted with water distribution deodorization floor of emergent and the downstream district that is made up of the sub-treatment zone of green stone by the surface kind, passage by the vertical partition plate bottom enters in the up district that is made up of the sub-treatment zone of green stone, coarse sand stone flour treatment zone and free water tagma of vertical partition plate opposite side, in the free water tagma, plant planting submerged plant, set out the water hole at the setting liquid level place in free water tagma simultaneously;
The 3rd, will through the sanitary sewage in the free water tagma that is arranged in up district after handling in the composite vertical current artificial wetland from water port enter one adjacent with composite vertical current artificial wetland, be provided with the vertical baffling underflow type artificial wet land that some vertical baffling plates and kind are implanted with emergent, sanitary sewage is further handled, collected and discharge by the perforation header that is located at wetland end bottom then by the water shoot that is attached thereto.
A kind of device of handling sanitary sewage, comprise pretreatment unit and the artificial swamp formed by grid, settling tank, it is characterized in that described artificial swamp is made up of the vertical baffling underflow type artificial wet land 13 that a composite vertical current artificial wetland 12 and is adjacent, described composite vertical current artificial wetland 12 is separated into sanitary sewage descender and the up district of sanitary sewage by vertical partition plate 6, and the sanitary sewage descender is formed and planted by macrobead water distribution deodorization layer 1 and the sub-treatment zone 2 of green stone and is implanted with emergent 11; The up district of sanitary sewage is made up of the sub-treatment zone 2 of green stone, coarse sand stone flour treatment zone 3, the free water tagma 5 that are positioned at the bottom successively, the sub-treatment zone 2 of green stone in the up district of sanitary sewage descender and sanitary sewage connects and forms the sanitary sewage passage in the bottom of dividing plate 6,5 kinds are implanted with submerged plant 4 in the free water tagma, setting liquid level place in free water tagma 5 is provided with water port 14, and the water outlet of water shoot 14 is higher than the surface of adjacent vertical baffling underflow type artificial wet land 13; In described vertical baffling underflow type artificial wet land 13, plant and be implanted with emergent 11, and be provided with some dividing plates 6 that directly link to each other with Chi Ding or pond dolly respectively, described dividing plate 6 is separated into descending vertical subsurface flow district and up vertical subsurface flow district with the sub-treatment zone 2 of green stone wherein, perforation header 9 is installed near the descending vertical subsurface flow district of water port 10 or up vertical subsurface flow district, this perforation header 9 links to each other the depth of water in the height may command current wetland of water port 16 with water shoot 10.
In the bottom of described composite vertical current artificial wetland 12 and vertical baffling underflow type artificial wet land 13 corresponding evacuated tube 8 and bearing 7 are installed all.
Emergent of the present invention can be reed, the hay grass, cyperus alternifolius, the combination of one or more in Canna generalis Bailey and the calamus, described submerged plant spring and summer can be one or more the combination in hydrilla verticillata, watermifoil, p.malaianus, comb tooth Herba potamogetonis distincti and the eel grass autumn, can be a kind of or its combination in waterweed and the water caltrop winter.
Sewage treatment unit of the present invention mainly is made up of grid, preliminary sedimentation tank, wet land treating system three parts, and specifically treatment scheme is as shown in Figure 1:
Wherein:
Grid: mainly be the floating matter of removing large volume, in order to avoid subsequent disposal is impacted.
Preliminary sedimentation tank: but mainly remove inorganic particle and sedimentation suspended substances such as sand.
The artificial swamp processing unit: this unit is the core of whole invention, is this unitary detailed description below.This unit is made up of vertical-flow wetland and current wetland two portions, shown in Fig. 2 (being ground type with vertical current and current wetland is example).
Vertical-flow wetland is the composite vertical current wetland, promptly this wetland is divided into downstream district and up stream district by central dividing plate, the sewage downstream district that flows through at first from top to bottom, the perforated wall by the central dividing plate bottom enters the up stream district then, does the upwelling motion in this zone from the bottom to top.Downstream district depth of packing is 70cm, be divided into to two-layer: the upper strata filler is the superelevation district, thickness is 10cm, particle diameter is 3-5cm, this packing layer mainly plays by two effects: 1) be assigned to sewage in the wet land system uniformly, 2) with the tank level control of water inlet in the bottom in this district, can reduce the influence that the stink because of raw waste water causes to surrounding environment, can reduce multiplying of mosquitos and flies in summer simultaneously.Lower thickness is 60cm, and this layer is a treatment zone, and packing material size is 1-2cm, and this district's filler is green stone for building.This district's institute kind of plant can be waterplant such as reed, hay grass, calamus, and these plants can absorb pollutents such as nitrogen phosphorus in the water body and COD on the one hand, on the other hand, can provide oxygen to wet land system, thereby guarantee the Degradation and Transformation of pollutent; Up stream is divided into three layers: lower thickness is 10cm, filler is green stone of particle diameter 1-2cm, middle level thickness is 20cm, filler is the mixture of coarse sand and bluestone powder, blending ratio between the two is (1-2): 1, the upper strata is the free water tagma, this region height is 30cm, the selected plant in up stream pond is a submerged plant, in middle filler, the root system of submerged plant can absorbed nitrogen phosphorus and pollutent such as COD, simultaneously can be to the packing layer oxygen supply with submerged plant plantation, the whole plant of submerged plant all is immersed in the water, at absorbed nitrogen, can be in the time of pollutent such as phosphorus and COD by photosynthesis to oxygen supply of water body.But the selection reference table 1 of submerged plant.
The submerged plant table that table 1 can Gong be selected for use
| Plant name | Section belongs to | China distributes | Ecological habit |
| Black algae | Hydrocharctaceae is deceived Trentepohlia | Various places, China north and south all have | Have and adapt to the ability that water body environment changes, can be grown in that illumination is strong, muddy, in the water body of poor nutrition or eutrophication, be the 3-11 month vegetative period. |
| Watermifoil | Haloragaceae fox-brush Trentepohlia | All there is distribution each provinces and regions of China | Adaptive faculty is stronger, is born in freshwaters such as lake, pond, irrigation canals and ditches and can effectively removes water body N and P. |
| P.malaianus | The Potamogetonaceae Potamogeton | All there is distribution various places, China north and south | All can grow in hydrostatic, the moving water, be the 3-11 month in wetland vegetative period of also can growing, and can effectively remove water body N and P. |
| Comb tooth Herba potamogetonis distincti | The Potamogetonaceae Potamogeton | All there is distribution various places, China north and south | Ecological amplitude is wide, is adapted to oligotrophic and grows to the super eutrophic water body, and all have in fresh water and seawater and long-livingly can effectively remove water body N and P. |
| Waterweed | Hydrocharctaceae | Originating in America plants for introducing | The fresh water water body, vegetative period be the Winter-Spring to early summer, be one of biomaterial of purifying waste water winter preferably, can effectively remove water body N and P. |
| Water caltrop | The Potamogetonaceae Potamogeton | All there is distribution various places, China north and south | Be born in pond, ditch, rice terrace, feed ditch and the unhurried current river, water body is little acid to neutral more, can grow as usual in the subglacial water body winter and can effectively remove water body N P and COD. |
| Eel grass | The Hydrocharctaceae Vallisneria | China's the South and the North all has distribution | Adaptability to water quality is stronger, and happiness weakly alkaline water quality adapts to water temperature below 24 ℃, does not like high temperature, cold-resistant, happiness high light can effectively be removed water body N and P. |
Wherein be generally spring, summer, Qiu Sanji the vegetative period of hydrilla verticillata, watermifoil, p.malaianus, comb tooth Herba potamogetonis distincti, eel grass, and waterweed and water caltrop belong to low temperature resistant plant, the existence of can surviving the winter.Therefore submerged plant is adopted the mode of interplanting, has both comprised wherein promptly that spring, summer, three season of autumn growing plants also comprised overwintering plant, and can make so all has plant-growth the whole year, more help the treatment effect of the system that guarantees.The sewage of handling through vertical-flow wetland enters current wetland by the overflow weir of pool wall one side in up stream district.The composite vertical current wetland is generally ground type, and the ground proximity place is provided with evacuated tube in the bottom in up pond, and when safeguarding, with this pond emptying, this pond adopts brick mix structure to build.
Drowned flow artificial wet land adopts the vertical baffling structure, promptly current wetland is divided into some lattice by dividing plate, the upper edge of adjacent separator and lower edge branch alternately are provided with water hole, sewage flows through in water hole, can make sewage in whole current wetland, make baffling up and down like this, help giving full play to the work of whole wet land filler in order to improve treatment effect.The total depth of current wetland is 70-80cm, its at the middle and upper levels 20cm be pedosphere, as the plantation layer of plant, simultaneously can remove a part of pollutent, the 50-60cm of lower floor is a treatment zone, filler is selected green stone for use, particle diameter is 1-2cm.Selected plant can be reed, hay grass, calamus etc. in the current wetland.The water-out manners of current wetland has two kinds: 1) laying perforated pipe near at the bottom of the pond of wetland end, the middle portion of perforated pipe is installed threeway, connecting rising pipe by threeway wears pool wall at the bottom of the pond and goes out, the 90 degree elbows that make progress at the other end installation outlet of rising pipe, on connect vertical telescopic tube, regulate the depth of water in wetland by this expansion pipe; 2) directly rising pipe and mounting ball valve are installed at the different heights of pool wall, can be by the depth of water in the switching adjusting wetland of different heights ball valve.In whole wetland bottom, lay perforated pipe along the pond length direction by pool wall, perforated pipe passes all dividing plates (carrying out antiseepage) and terminal pool wall outside the pond, controls switching with ball valve, opens ball valve when safeguarding, and the emptying wetland is closed ball valve when normally moving.Current wetland can be a ground type, and semi-underground type and underground type adopt brick to mix structure, and ground has the gradient of the tendency water side of 2-3%.The feed-water end elevation of current wetland should guarantee that the water outlet of composite vertical current can enter in the current wetland smoothly than the low 20cm at least in composite vertical current water side.
In wetland unit, the removal approach that principal pollutant are is as follows:
1) removal of COD.COD can be utilized by plant absorbing in whole wetland unit, simultaneously can be by heterotrophic microorganism in the wet land system as carbon source and energy utilization.
2) removal of nitrogenous compound.In the downstream pond of vertical-flow wetland and the packing area of up stream, near plant root system part, organonitrogen and ammonia nitrogen and nitrite nitrogen can be oxidized to nitric nitrogen, and at anoxic and anaerobic zone away from root system, the nitric nitrogen that carries in the former water and oxidation generates is reduced into nitrogen and removes; In the free water tagma of up stream, the oxidizing reaction of organonitrogen, ammonia nitrogen and nitrite nitrogen mainly takes place; In whole current wetland, can pass through nitration denitrification denitrogenation; An ammonia nitrogen and a nitre nitrogen part can be utilized by plant and microorganism.
3) removal of P contained compound.Organophosphorus can be by inorganicization of microorganism, and inorganic phosphorus is utilized by plant and microorganism in whole pond simultaneously being removed with green stone and stone flour generation calcium phosphate precipitation in whole pond.
The present invention has the following advantages:
1, existing composite vertical current wetland is improved,, can effectively improve the content of this zone dissolved oxygen, thereby help the carrying out of nitration reaction, for details see attached table test-results shown in the 7-9 at the free water tagma in up stream pond kind planting submerged plant.
2, existing underflow type artificial wet land is transformed, added flap therein, increased the tortuosity of current, help the raising of contaminant removal efficiency.
3, above-mentioned two kinds of wetlands are contacted reach good pollutant removal.The pollutant removal synopsis shown in the 1-6 for details see attached table.
Description of drawings
Fig. 1 is a domestic sewage treatment process schematic flow sheet of the present invention.
Fig. 2 is the structural representation of artificial swamp of the present invention.
Fig. 3 is a structural representation of forming composite vertical current wetland of the present invention.
Fig. 4 is a structural representation of forming the latent ground of vertical baffling undercurrent of the present invention.
Embodiment
The present invention is further illustrated for following structure drawings and Examples.
The technical process of present embodiment as shown in Figure 1.
A kind of method of utilizing artificial swamp to handle sanitary sewage, it may further comprise the steps:
At first sanitary sewage is carried out pre-treatment through grid and settling tank, but remove wherein floating matter and sedimentation suspended substance;
To introduce in the first step composite vertical current artificial wetland through pretreated sanitary sewage then, what make its process vertical partition plate one side is implanted with water distribution deodorization floor of emergent and the downstream district that is made up of the sub-treatment zone of green stone by the surface kind, passage by the vertical partition plate bottom enters in the up district that is made up of coarse sand stone flour treatment zone and free water tagma of vertical partition plate opposite side, in the free water tagma, plant planting submerged plant, be provided with water outlet in the setting liquid level position in free water tagma simultaneously;
The 3rd, will through the sanitary sewage in the free water tagma that is arranged in up district after handling in the composite vertical current artificial wetland from water shoot enter one adjacent with composite vertical current artificial wetland, be provided with the vertical baffling underflow type artificial wet land that some vertical baffling plates and kind are implanted with emergent, sanitary sewage is further handled, collected and discharge by the perforation header that is located at wetland end bottom then by the water shoot that is attached thereto.
The life treatment unit of present embodiment, comprise by grid, pretreatment unit and artificial swamp that settling tank is formed, grid wherein, settling tank is same as the prior art, artificial swamp wherein is made up of the vertical baffling underflow type artificial wet land 13 (as Fig. 4) that a composite vertical current artificial wetland 12 (as Fig. 3) and is adjacent, described composite vertical current artificial wetland 12 is separated into sanitary sewage descender and the up district of sanitary sewage by vertical partition plate 6, and the sanitary sewage descender is formed and planted by macrobead water distribution deodorization layer 1 and the sub-treatment zone 2 of green stone and is implanted with emergent 11; The up district of sanitary sewage is made up of the sub-treatment zone 2 of green stone, coarse sand stone flour treatment zone 3, the free water tagma 5 that are positioned at the bottom successively, the sub-treatment zone 2 of green stone in the up district of sanitary sewage descender and sanitary sewage connects and forms the sanitary sewage passage in the bottom of dividing plate 6,5 kinds are implanted with submerged plant 4 in the free water tagma, setting hydraulic height place in free water tagma 5 is equipped with water shoot 14, and the water outlet of water shoot 14 is higher than the surface of adjacent vertical baffling underflow type artificial wet land 13; In described vertical baffling underflow type artificial wet land 13, plant and be implanted with emergent 11, and be provided with some dividing plates 6 that directly link to each other with Chi Ding or pond dolly respectively, described dividing plate 6 is separated into descending vertical subsurface flow district and up vertical subsurface flow district with the sub-treatment zone 2 of green stone wherein, in position perforation header 9 is installed near wetland end bottom, this perforation header 9 links to each other with water shoot 10, the height of water port 16 can be used for controlling the depth of water in the current wetland, as shown in Figure 2.
Above-mentioned emergent can be reed, the hay grass, cyperus alternifolius, the combination of one or more in Canna generalis Bailey and the calamus, described submerged plant spring and summer can be one or more the combination in hydrilla verticillata, watermifoil, p.malaianus, comb tooth Herba potamogetonis distincti, the eel grass autumn, can be a kind of or its combination in waterweed and the water caltrop winter.
Below in conjunction with a concrete making example the present invention is done further explanation, the size that is provided is only for reference, and it does not constitute the qualification of the present invention being protected content.As Fig. 2, artificial swamp of the present invention is made up of two-stage, and the first step is a composite vertical current wetland 12, and the second stage is vertical baffling underflow type artificial wet land 13.The two-stage wetland all adopts thickness to be the processing of 5mmPVC plate.Wherein, composite vertical current wetland 12 is divided into two lattice, and every lattice are of a size of L * W * H=500 * 500 * 500 (mm), and water seam UNICOM was passed through in the bottom, and crossing the water wavelength width of a slit is 50mm.Zuo Banchi in the composite vertical current wetland is a downstream tank, and this pool inner water flows from top to bottom; The right side is the up stream pond, water flows from bottom to top, 400mm place at the bottom of the pond opens even water shoot 14 at the pool wall in this pond, the second stage wetland that water is gone into perforate surface by the posticum overflow on the water shoot 14 is the cloth tank on vertical baffling underflow type artificial wet land 13 surfaces, and flowing into second stage wetland by this groove uniform distribution is vertical baffling underflow type artificial wet land 13.Establish evacuated tube 8 at the bottom of the downstream tank, when safeguard in the pond, can be with pond water emptying; Vertical baffling underflow type artificial wet land 13 is of a size of L * W * H=1500 * 500 * 500 (mm), full pond is divided into 5 lattice by 4 with the vertical dividing plate 6 in bottom surface, wherein the water seam was opened in the 1st and No. 3 dividing plate lower edge, the seam height is 50mm, the upper edge is concordant with the top, pond, and the 2nd and 4 plate hight is 350mm, and lower edge and pond back welding connect sealing, 2nd, establish evacuated tube 8 at the bottom of the 4 and 5 lattice ponds, function is the same.The pond end is established perforation header 9, and water outlet 16 height are 400mm at the bottom of the pond, and water is vertical baffling between the dividing plate 6 in this pond.
Vertical baffling underflow type artificial wet land 13 used fillers all are green stone.Wherein the downstream pond filler of composite vertical current wetland 12 divides two-layerly, and upper level is 100mm, packing material size d=30～50mm; Following layer height is 400mm, packing material size d=5～10mm; Up stream pond filler also is divided into two-layer, and following layer height is 100mm, packing material size d=5～10mm, and upper level is 150mm packing material size d=0.1～5mm, the packing layer top is the free water body of 150mm.Downstream pond packed height exceeds downstream pond free-water level 100mm.
Plant in the wetland mainly comprises two big classes: emergent and submerged plant.Downstream pond and vertical baffling underflow type artificial wet land 13 plantation reeds at composite vertical current wetland 12, and mainly plant submerged plant in the up stream district of composite vertical current, described submerged plant spring and summer autumn is hydrilla verticillata, watermifoil, p.malaianus, comb tooth Herba potamogetonis distincti, eel grass, and be waterweed and water caltrop winter.
Below be of the present invention one concrete experimentation, can find out that from experimental data wherein the present invention compared with prior art has tangible progress.
Test water is artificial simulated wastewater, and the water distribution main component is NH
4Cl, KH
2PO
4And C
6H
12O
6Because used nitride only is NH among the artificial distribution of this test
4 +-N under the action of microorganisms, mainly is converted into NO in wet land system
2 --N and NO
3 --N is so think that the TN in the wetland water body consists predominantly of NH
4 +-N, NO
2 --N and NO
3 -So-N is TN=NH in this test
4 +-N+NO
2 --N+NO
3 --N adopts the peristaltic pump dominant discharge, HRT=4.5d.Test period is 25 days, during take a sample altogether ten times, measure Inlet and outlet water COD
Cr, NH
4 +-N, NO
2 --N, NO
3 --N and PO
4 3--P measures composite vertical current wetland up stream district DO and NO three times at random
2 --N, NO
3 --N all shifts out the submerged plant in the vertical-flow wetland up stream district afterwards, measures DO and NO three times
2 --N, NO
3 --N.Testing data sees the following form
Table 1, NH
4 +-N removal effect
| The sampling number of times | Water inlet (mg/L) | Water outlet (mg/L) | Clearance (%) |
| 1 | 41.6 | 3.0 | 92.8 |
| 2 | 41.8 | 3.9 | 90.7 |
| 3 | 46.1 | 4.0 | 91.3 |
| 4 | 40.4 | 4.7 | 88.4 |
| 5 | 45.3 | 1.7 | 96.3 |
| 6 | 37.8 | 1.1 | 97.2 |
| 7 | 40.2 | 1.1 | 97.2 |
| 8 | 43.0 | 3.1 | 92.3 |
| 9 | 46.3 | 2.7 | 94.1 |
| 10 | 46.0 | 1.9 | 95.8 |
Table 2, water outlet NO
2 --N content
| The sampling number of times | Water inlet (mg/L) | Water outlet (mg/L) |
| 1 | 0 | 0.02 |
| 2 | 0 | 0.02 |
| 3 | 0 | 0.03 |
| 4 | 0 | 0.02 |
| 5 | 0 | 0.02 |
| 6 | 0 | 0.03 |
| 7 | 0 | 0.03 |
| 8 | 0 | 0.03 |
| 9 | 0 | 0.02 |
| 10 | 0 | 0.03 |
Table 3, water outlet NO
3 --N content
| The sampling number of times | Water inlet (mg/L) | Water outlet (mg/L) |
| 1 | 0 | 0.53 |
| 2 | 0 | 0.58 |
| 3 | 0 | 0.55 |
| 4 | 0 | 0.17 |
| 5 | 0 | 0.3 |
| 6 | 0 | 0.09 |
| 7 | 0 | 0.32 |
| 8 | 0 | 0.36 |
| 9 | 0 | 0.36 |
| 10 | 0 | 0.37 |
Table 4, TN removal effect
| The sampling number of times | Water inlet (mg/L) | Water outlet (mg/L) | Clearance (%) |
| 1 | 41.6 | 3.5 | 91.5 |
| 2 | 41.8 | 4.5 | 89.2 |
| 3 | 46.1 | 4.6 | 90.1 |
| 4 | 40.4 | 4.9 | 87.9 |
| 5 | 45.3 | 2.0 | 95.6 |
| 6 | 37.8 | 1.2 | 96.9 |
| 7 | 40.2 | 1.5 | 96.3 |
| 8 | 43.0 | 3.5 | 91.9 |
| 9 | 46.3 | 3.1 | 93.3 |
| 10 | 46.0 | 2.3 | 94.9 |
Table 5, PO
4 3--P removal effect
| The sampling number of times | Water inlet (mg/L) | Water outlet (mg/L) | Clearance (%) |
| 1 | 12.1 | 0.2 | 98.3 |
| 2 | 13.8 | 0.24 | 98.3 |
| 3 | 13.1 | 0.24 | 98.2 |
| 4 | 14.7 | 0.46 | 96.9 |
| 5 | 14.3 | 0.50 | 96.4 |
| 6 | 14.0 | 0.85 | 93.9 |
| 7 | 14.4 | 0.33 | 97.7 |
| 8 | 15.0 | 0.26 | 98.3 |
| 9 | 13.8 | 0.39 | 97.1 |
| 10 | 46.0 | 1.9 | 95.8 |
Table 6, COD
CrRemoval effect
| The sampling number of times | Water inlet (mg/L) | Water outlet (mg/L) | Clearance (%) |
| 1 | 164.2 | 10.6 | 93.5 |
| 2 | 162.5 | 14.2 | 91.3 |
| 3 | 159.6 | 14.2 | 91.1 |
| 4 | 166.8 | 14.6 | 91.2 |
| 5 | 137.4 | 16.2 | 88.2 |
| 6 | 172.6 | 20.2 | 88.3 |
| 7 | 170.4 | 12.2 | 92.8 |
| 8 | 177.8 | 9.4 | 94.7 |
| 9 | 171.0 | 13.8 | 91.9 |
| 10 | 167.8 | 12.6 | 92.5 |
Table 7, composite vertical current wetland up stream district DO
| No submerged plant (mg/L) | Submerged plant (mg/L) is arranged | |
| 1 | 1.2 | 5.7 |
| 2 | 0.8 | 6.2 |
| 3 | 0.5 | 6.8 |
Table 8, composite vertical current wetland up stream district NO
2 --N
| No submerged plant (mg/L) | Submerged plant (mg/L) is arranged | |
| 1 | 0.02 | 0.04 |
| 2 | 0.03 | 0.04 |
| 3 | 0.02 | 0.06 |
Table 9, composite vertical current wetland up stream district NO
3 --N
| No submerged plant (mg/L) | Submerged plant (mg/L) is arranged | |
| 1 | 0.03 | 5.2 |
| 2 | 0.05 | 6.4 |
| 3 | 0.02 | 5.0 |
Claims (4)
1. method of utilizing artificial swamp to handle sanitary sewage, it may further comprise the steps:
At first sanitary sewage is carried out pre-treatment through grid and settling tank, but remove wherein floating matter and sedimentation suspended substance;
To introduce in the first step composite vertical current artificial wetland through pretreated sanitary sewage then, what make its process vertical partition plate one side is implanted with water distribution deodorization floor of emergent and the downstream district that is made up of the sub-treatment zone of green stone by kind, passage by the vertical partition plate bottom enters in the up district that is made up of the sub-treatment zone of green stone, coarse sand stone flour treatment zone and free water tagma of vertical partition plate opposite side, in the free water tagma, plant planting submerged plant, set out the mouth of a river at the setting liquid level place in free water tagma simultaneously;
Then make sanitary sewage enter perforation cloth tank by water outlet through the free water tagma that is arranged in up district after the composite vertical current artificial wetland processing, by cloth tank uniform distribution enter one adjacent with composite vertical current artificial wetland, be provided with some vertical baffling plates and plant and be implanted with in the vertical baffling underflow type artificial wet land of emergent, sanitary sewage is further handled, then by being located at the wetland end, the perforation header that is positioned at the bottom is collected, and is discharged by the water shoot that is attached thereto.
2. device of handling sanitary sewage, comprise pretreatment unit and the artificial swamp formed by grid, settling tank, it is characterized in that described artificial swamp is made up of the vertical baffling underflow type artificial wet land (13) that a composite vertical current artificial wetland (12) and is adjacent, described composite vertical current artificial wetland (12) is separated into sanitary sewage descender and the up district of sanitary sewage by vertical partition plate (6), and the sanitary sewage descender is formed and planted by macrobead water distribution deodorization layer (1) and the sub-treatment zone of green stone (2) and is implanted with emergent (11); The up district of sanitary sewage is successively by the sub-treatment zone of green stone (2) that is positioned at the bottom, coarse sand stone flour treatment zone (3), free water tagma (5) is formed, the sub-treatment zone of green stone (2) in the up district of sanitary sewage descender and sanitary sewage connects and forms the sanitary sewage passage in the bottom of dividing plate (6), kind is implanted with submerged plant (4) in free water tagma (5), setting liquid level place in free water tagma (5) is provided with water outlet (14), water enters perforation cloth tank (15) by water outlet (14) overflow, is distributed to the feed-water end of underflow type artificial wet land (13) uniformly by perforation cloth tank (15); In described vertical baffling underflow type artificial wet land (13), plant and be implanted with emergent (11), and be provided with some dividing plates (6) that directly link to each other with Chi Ding or pond dolly respectively, described dividing plate (6) is separated into descending vertical subsurface flow district and up vertical subsurface flow district with the sub-treatment zone of green stone (2) wherein, near place perforation header (9) is being installed near wetland end bottom, this perforation header (9) links to each other with water shoot (10), and the height of water port (16) can be used for controlling the depth of water in the wetland.
3. the device of processing sanitary sewage according to claim 2 is characterized in that in the bottom of described composite vertical current artificial wetland (12) and vertical baffling underflow type artificial wet land (13) corresponding evacuated tube (8) and bearing (7) being installed all.
4. the device of processing sanitary sewage according to claim 2 is characterized in that described emergent is more than one combination of a kind of in reed, hay grass, cyperus alternifolius, Canna generalis Bailey and the calamus or its; Described submerged plant spring and summer is one or more the combination in hydrilla verticillata, watermifoil, p.malaianus, comb tooth Herba potamogetonis distincti and the eel grass autumn, and be a kind of or their combination in waterweed and the water caltrop winter.
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