CN103214093B - Composite-electrode horizontal subsurface constructed wetland device for efficient nitrogen removal of low C/N domestic sewage - Google Patents
Composite-electrode horizontal subsurface constructed wetland device for efficient nitrogen removal of low C/N domestic sewage Download PDFInfo
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Abstract
The invention provides a composite-electrode horizontal subsurface constructed wetland device for the efficient nitrogen removal of low C/N domestic sewage, which is characterized by comprising a multi-medium filter bed, at least two activated carbon fiber electrode assemblies are distributed in the multi-medium filter bed, the activated carbon fiber electrode assemblies are connected with a direct-current supply system, the two sides of the multi-medium filter bed are respectively provided with an inflow water distributor and an outflow water distributor, an emergent aquatic plant set is planted in the multi-medium filter bed, and the inflow water distributor and the outflow water distributor are connected with a water supply system. According to the invention, a micro electric field can be formed so as to promote the plant growth and the radial oxygen loss, thereby facilitating the formation of an aerobic nitrification environment. Meanwhile, an activated carbon fiber column can form a heterotrophic-autotrophic combined denitrifying bacterium biofilm, thereby reducing the demands on an organic carbon source, and improving the rate of nitrogen removal by denitrification. The horizontal subsurface constructed wetland device disclosed by the invention is simple in structure, a carbon source is not required to be added, environments facilitating nitrification and denitrification can be formed simultaneously, the nitrogen removal rate is high, the energy consumption is low, the device is uneasy to be blocked, and the maintenance and replacement of the activated carbon fiber electrode assemblies are convenient.
Description
Technical field
The present invention relates to sanitary sewage disposal technical field, more specifically relate to the horizontal drowned flow artificial wet land Ecological Disposal technological method of a kind of low ratio of carbon to ammonium (C/N) efficient domestic sewage denitrogenation, also relate to the horizontal drowned flow artificial wet land device of a kind of low C/N efficient domestic sewage denitrogenation simultaneously, be applicable to the purifying treatment of low C/N sanitary sewage.
Background technology
Urbanization process is constantly accelerated, and city domestic sewage quantity discharged continues to increase.Sanitary sewage C/N is lower in Shelter in South China Cities, and sewage treatment facility is effectively denitrogenation often, and water outlet total nitrogen can not qualified discharge, and polluted-water, causes lake river eutrophication, and Blue-green Algae Fast Growth threatens safe drinking water.
Artificial swamp is a kind of novel ecological wastewater processing technology, there is the features such as high-level efficiency, overcast, manageability, be particularly suitable for the purifying treatment of sanitary sewage, and aspect the processing of the waste water such as trade effluent, agriculture herding sewage, percolate, having application more widely.But the too low meeting of C/N causes constructed wetland bed body back segment matrix heterotrophic denitrification process to be obstructed, and affects water outlet denitrification effect.Conventional solution is to promote denitrification denitrogenation effect by intake C/N or back segment additional carbon of raising.Make outlet water organic substance concentration too high but water inlet C/N adjusting is too high or additional carbon is too much all by causing organic content to exceed the demand of microorganism to organic carbon source, affect COD qualified discharge; Otherwise water inlet C/N promotes inadequate or additional carbon is not enough, will cause denitrification not thorough.In addition, can there is on wetland upper strata aerobic decomposition in additional carbon, causes carbon source waste, increases processing cost.Therefore, there is larger drawback by regulating C/N or supplementary carbon source to solve artificial swamp Denitrogenation, and realize very worth exploration of method of the low C/N efficient domestic sewage of artificial swamp denitrogenation.
Summary of the invention
The object of the invention is to research and develop one and can improve artificial swamp leading portion nitrification ability simultaneously, the combined electrode horizontal drowned flow artificial wet land device of the low C/N denitrifying capacity of back segment, solving artificial swamp can not be to the effective Denitrogenation of low C/N sanitary sewage, and improves Nitrogen Removal Effect in Constructed Wetland.
In order to achieve the above object, the invention provides a kind of combined electrode horizontal drowned flow artificial wet land device, it is characterized in that, comprise multimedium filter bed, in multimedium filter bed, be distributed with at least two Activated Carbon Fiber Electrodes assemblies, Activated Carbon Fiber Electrodes assembly connects DC power supply system, and the both sides of multimedium filter bed are respectively equipped with and become a mandarin water distributor and go out to spread hydrophone, in multimedium filter bed, plant and be implanted with emergent group, become a mandarin water distributor with go out to spread hydrophone and be connected water drainage-supply system.
Preferably, described DC power supply system comprises potentiostat, AC/DC changeover switch, negative electrode water proof wire net and anode water proof wire net, potentiostat connects 220V power supply and AC/DC changeover switch, the negative electrode of AC/DC changeover switch is connected with negative electrode water proof wire net, the anode of AC/DC changeover switch is connected with positive wire net, negative electrode water proof wire net is connected with the Activated Carbon Fiber Electrodes assembly of 80%-90% number, and anode water proof wire net is connected with remaining Activated Carbon Fiber Electrodes assembly.
Preferably, described water drainage-supply system comprises raw water box, throttling valve, settling tank, sump pump, flowrate control valve, under meter and effluent trough, raw water box is connected with throttling valve, and throttling valve is connected with settling tank, and settling tank is connected with sump pump, sump pump connects into water pipe, inhalent siphon connects into spreads hydrophone, and inhalent siphon is provided with flowrate control valve and under meter, goes out to spread hydrophone and is connected with rising pipe, rising pipe is provided with flowrate control valve and under meter, and rising pipe is connected with effluent trough.
Preferably, the described water distributor that becomes a mandarin comprises perforation water distributor, cloth tank and porous water distribution board, and perforation water distributor is connected with inhalent siphon, and is located at the top of cloth tank, and cloth tank is filled rough quartz sand, and porous water distribution board is located between cloth tank and multimedium filter bed.
Preferably, the described hydrophone that goes out to spread comprises cloth tank and porous water distribution board, and cloth tank is filled rough quartz sand, and porous water distribution board is located between cloth tank and multimedium filter bed, and cloth tank connects rising pipe.
More preferably, the described porous water distribution board employing polyester sheet making that becomes a mandarin water distributor and go out to spread hydrophone, perforate aperture 1.0cm ~ 1.5cm, and be coated with nylon window screening, become a mandarin water distributor and go out to spread hydrophone cloth tank in the median size of rough quartz sand be 2.0cm ~ 2.5cm.
Preferably, the planting density of described emergent group is 15 strains/m
2~ 20 strains/m
2.
Described emergent group can be the emergent of well developed root system, can be also the good emergent of growing way, is preferably and comprises reed and Canna generalis Bailey.
More preferably, described multimedium filter bed is under-filled, and to have median size be the small particle size quartz sand of 0.7cm ~ 1.2cm, top is filled with the large particle diameter quartz sand that median size is 1.5cm ~ 1.8cm, and in multimedium filter bed, total packing height of small particle size quartz sand and large particle diameter quartz sand is 85cm-95cm.
More preferably, the ratio that in described multimedium filter bed short transverse, large particle diameter quartz sand accounts for is successively decreased from feed-water end to water side, each minimizing 5% ~ 8%, the large particle diameter quartz sand of feed-water end accounts for 75% ~ 80% in multimedium filter bed short transverse, described reed planting accounts on multimedium filter bed bed body more than 40% ~ 45% height in large particle diameter quartz sand, residue multimedium filter bed space plantation Canna generalis Bailey.
Preferably, evenly also vertical arrangement is in multimedium filter bed for described Activated Carbon Fiber Electrodes assembly, and volume accounts for 35% ~ 40% of multimedium filter bed volume.
Preferably, described Activated Carbon Fiber Electrodes assembly comprises porous PVC pipe, the sidewall of porous PVC pipe is coated with nylon window screening, the top of porous PVC pipe is provided with top pressure closure, the bottom of porous PVC pipe is provided with firm banking, in porous PVC pipe, be provided with activated carbon fiber post, the middle part of activated carbon fiber post is provided with Wimet wire, top pressure closure is exposed in the upper end of Wimet wire, the lower end of Wimet wire connects the spherical weight that dangles, and firm banking is connected with the base plate of multimedium filter bed.
More preferably, the external diameter of described porous PVC pipe is 10cm ~ 12cm, and height is 100cm ~ 110cm, perforate aperture is 1.5cm ~ 1.8cm, percentage of open area is 70% ~ 80%, and pitch of holes is 1.5cm ~ 2.0cm, and Wimet wire is bare wire, diameter is 0.5cm ~ 0.8cm, long is 75cm ~ 80cm, and activated carbon fiber post uses active carbon fiber felt to curl and forms, and diameter is 5cm ~ 6cm, long is 70cm ~ 75cm, and specific surface area is 1100m
2/ g ~ 1230m
2/ g, porosity is 90% ~ 95%, firm banking adopts polyester material, thick 2.0cm ~ 2.5cm, diameter is 10cm ~ 12cm, and external diameter is consistent with porous PVC pipe, and top pressure closure adopts PVC plastics to make, and the weight of the described spherical weight that dangles is 1.0kg ~ 1.3kg.
Principle of work of the present invention is: the sanitary sewage being stored in raw water box passed in settling tank, after 1.5 hours ~ 2.0 hours precipitations, is promoted to by sump pump the water distributor that becomes a mandarin, and by flowrate control valve control flow.AC/DC changeover switch output current intensity 15mA ~ 20mA.The electric microfield stimulating plant that the present invention is produced by Activated Carbon Fiber Electrodes assembly is grown, and accelerates the absorption to nitric nitrogen, and stimulating plant Radial Oxygen Loss from Root, creates the favourable nitration condition in multimedium filter bed aerobic zone.In cathodic activity charcoal fiber electrode assembly, be rich in autotrophy-heterotrophic denitrification microbial film, can be under low C/N condition denitrification denitrogenation fast.Through the residence time of 1 day ~ 2 days, water outlet got final product qualified discharge, and denitrification rates will improve greatly.
The starting method of combined electrode horizontal drowned flow artificial wet land device of the present invention is: by the concentrated active sludge dilution of taking from sewage work's anaerobic digester, pass in the multimedium filter bed of combined electrode horizontal drowned flow artificial wet land, separately get active sludge and be inoculated on activated carbon fiber post.Plantation reed and Canna generalis Bailey seedling are in multimedium filter bed.Wait for 3 weeks ~ 4 weeks, treat that plant growing way is steady, on activated carbon fiber post, occur microbial film, combined electrode horizontal drowned flow artificial wet land starts complete.
The operation method of combined electrode horizontal drowned flow artificial wet land device of the present invention is: Jiang Yuanshui passes in settling tank, and the residence time is 1.5 hours ~ 2.0 hours.Settling tank water outlet enters the water distributor that becomes a mandarin, by flow control valve control flow, and multimedium filter bed control water level 75cm ~ 80cm.Open direct supply, adjusting strength of current is 15mA ~ 20mA.The residence time of sewage in multimedium filter bed reach 18 hours ~ and after 24 hours, water outlet can reach drainage requirement.
Compared with prior art, advantage of the present invention is:
1. denitrifying capacity of the present invention improves a lot.In the present invention, adopted Activated Carbon Fiber Electrodes assembly, the anaerobic environment that utilizes artificial swamp substrate base to provide, carries out denitrification denitrogenation by heterotrophism-autotrophic denitrification fungal component microbial film.Cathodic activity charcoal fibre columns specific surface area is large, and can be by the contact area of the reinforcement of porous PVC pipe and current.In addition, can observe biofilm development situation by opening porous PVC pipe top pressure closure, prevent that microbial film from stopping up.More previous Artificial Wetland Techniques improves a lot in denitrification denitrogenation efficiency, can reach 60% ~ 70%.
2. emergent absorption nitrogen ability of the present invention significantly improves.By Activated Carbon Fiber Electrodes effect, produce electric microfield, further stimulating plant growth, has strengthened the absorption to nitric nitrogen.The present invention is in the stronger reed of artificial swamp leading portion plantation Radial Oxygen Loss from Root ability, and back segment plantation speed of growth Canna generalis Bailey faster, has strengthened the absorption to nitrogen of nitration condition and emergent.
3. multimedium filter bed of the present invention adopts the quartz sand of different-grain diameter to fill, multimedium filter bed leading portion is taking large particle diameter quartz sand as main, multimedium filter bed back segment, taking small particle size quartz sand as main, is conducive to artificial swamp leading portion aerobic nitrification, back segment anaerobic denitrifying process.
4. the present invention does not need external carbon source, does not need to regulate water inlet C/N yet, and has certain ecoaesthetics value.
5. the present invention, compared with conventional artificial swamp denitride technology method, has and does not need to regulate water inlet C/N and external carbon source, and has the feature of efficient denitrification effect.Combined electrode horizontal drowned flow artificial wet land device can be widely used in Shelter in South China Cities sanitary sewage disposal plant tail water advanced treatment, rural domestic sewage treatment, and the fields such as farmland pollution of area source, have vast potential for future development.
Brief description of the drawings
Fig. 1 is combined electrode horizontal drowned flow artificial wet land apparatus structure front view of the present invention;
Fig. 2 is combined electrode horizontal drowned flow artificial wet land apparatus structure of the present invention (Fig. 1) vertical view;
Fig. 3 is combined electrode horizontal drowned flow artificial wet land device of the present invention (Fig. 1) left view;
Fig. 4 is the thin bilge construction schematic diagram of Activated Carbon Fiber Electrodes assembly;
Fig. 5 is the thin bilge construction schematic diagram of the porous water distribution board in water distributor.
In figure: arrow represents water (flow) direction; Wherein, 1-Activated Carbon Fiber Electrodes assembly; 2-top pressure closure; 3-Wimet wire; 4-activated carbon fiber post; 5-porous PVC pipe; The 6-weight that dangles; 7-firm banking; 8-potentiostat; 9-AC/DC changeover switch; 10-negative electrode water proof wire net; 11-anode water proof wire net; 12-raw water box; 13-throttling valve; 14-settling tank; 15-sump pump; 16-flowrate control valve; 17-under meter; 18-effluent trough; The 19-water distributor of boring a hole; 20-cloth tank; 21-porous water distribution board; The rough quartz sand of 22-; 23-small particle size quartz sand; The large particle diameter quartz sand of 24-; 25-Canna generalis Bailey; 26-reed; 27-nylon window screening.
Embodiment
Illustrate the present invention below in conjunction with embodiment.
Embodiment
As shown in Figure 1, be combined electrode horizontal drowned flow artificial wet land apparatus structure front view of the present invention, described combined electrode horizontal drowned flow artificial wet land device comprises long 2.0m, wide 1.2m, the multimedium filter bed of high 1.0m, multimedium filter bed packing height 90cm, controls water level 80cm.In multimedium filter bed, be distributed with 18 Activated Carbon Fiber Electrodes assemblies 1, with 3 horizontal 6 vertical being evenly arranged in multimedium filter bed, Activated Carbon Fiber Electrodes assembly 1 connects DC power supply system, the both sides of multimedium filter bed are respectively equipped with and become a mandarin water distributor and go out to spread hydrophone, in multimedium filter bed, plant and be implanted with emergent group, become a mandarin water distributor with go out to spread hydrophone and be connected water drainage-supply system.
Described DC power supply system comprises potentiostat 8, AC/DC changeover switch 9, negative electrode water proof wire net 10 and anode water proof wire net 11, potentiostat 8 connects 220V power supply and AC/DC changeover switch 9, the negative electrode of AC/DC changeover switch 9 is connected with negative electrode water proof wire net 10, the anode of AC/DC changeover switch 9 is connected with positive wire net 11, as shown in Figure 2, negative electrode water proof wire net 10 is connected with the Activated Carbon Fiber Electrodes assembly 1 of 89% number, and anode water proof wire net 11 is connected with remaining Activated Carbon Fiber Electrodes assembly 1.
Described water drainage-supply system comprises raw water box 12, throttling valve 13, settling tank 14, sump pump 15, flowrate control valve 16, under meter 17 and effluent trough 18, raw water box 12 is connected with throttling valve 13, throttling valve 13 is connected with settling tank 14, settling tank 14 is connected with sump pump 15, sump pump 15 connects into water pipe, inhalent siphon connects into spreads hydrophone, inhalent siphon is provided with flowrate control valve 16 and under meter 17, going out to spread hydrophone is connected with rising pipe, rising pipe is provided with flowrate control valve 16 and under meter 17, and rising pipe is connected with effluent trough 18.
The described water distributor that becomes a mandarin comprises perforation water distributor 19, cloth tank 20 and porous water distribution board 21, as shown in Figure 3, perforation water distributor 19 is connected with inhalent siphon, and be located at the top of cloth tank 20, cloth tank 20 is filled rough quartz sand 22, and porous water distribution board 21 is located between cloth tank 20 and multimedium filter bed.
The described hydrophone that goes out to spread comprises cloth tank 20 and porous water distribution board 21, and cloth tank 20 is filled rough quartz sand 22, and porous water distribution board 21 is located between cloth tank 20 and multimedium filter bed, and cloth tank 20 connects rising pipe.As shown in Figure 5, the described water distributor that becomes a mandarin adopts polyester sheet to make with the porous water distribution board 21 that goes out to spread hydrophone, perforate aperture 1.0cm, and be coated with nylon window screening 27, become a mandarin water distributor and go out to spread hydrophone cloth tank 20 in the median size of rough quartz sand be 2.5cm.
The planting density of described emergent group is 20 strains/m
2.Described emergent group is reed 26 and Canna generalis Bailey 25.Described multimedium filter bed is under-filled, and to have median size be the small particle size quartz sand 23 of 1.0cm, top is filled with the large particle diameter quartz sand 24 that median size is 1.5cm, and in multimedium filter bed, total packing height of small particle size quartz sand 23 and large particle diameter quartz sand 24 is 85cm.The ratio that in described multimedium filter bed short transverse, large particle diameter quartz sand 24 accounts for is successively decreased from feed-water end to water side, each minimizing 8%, be conducive to multimedium filter bed feed-water end and form aerobic nitrification environment, be conducive to multimedium filter bed water side and form anaerobic denitrifying environment, the large particle diameter quartz sand 24 of feed-water end accounts for 75% ~ 80% in multimedium filter bed short transverse, 26 kinds, described reed is planted in large particle diameter quartz sand and accounts on multimedium filter bed bed body more than 40% height, residue multimedium filter bed space plantation Canna generalis Bailey 25.
Evenly also vertical arrangement is in multimedium filter bed for described Activated Carbon Fiber Electrodes assembly 1, and volume accounts for 40% of multimedium filter bed volume.As shown in Figure 4, described Activated Carbon Fiber Electrodes assembly 1 comprises porous PVC pipe 5, and the sidewall of porous PVC pipe 5 is coated with nylon window screening 27, and the aperture of nylon window screening 27 should be less than the small particle size quartz sand median size using in multimedium filter bed.The top of porous PVC pipe 5 connects top pressure closure 2, play and atmospheric isolation effect, the bottom of porous PVC pipe 5 is connected and fixed base 7, in porous PVC pipe 5, be provided with activated carbon fiber post 4, the middle part of activated carbon fiber post 4 is provided with Wimet wire 3, Wimet wire 3 is through activated carbon fiber post 4, top pressure closure 2 is exposed in the upper end of Wimet wire 3, the lower end of Wimet wire 3 connects the spherical weight that dangles, the spherical weight that dangles plays stretching action, firm banking 7 lower ends are connected with the base plate of multimedium filter bed, play the effect of fixing Activated Carbon Fiber Electrodes assembly.The even tube wall perforate of described porous PVC pipe 5, its external diameter is 12cm, height is 110cm, perforate aperture is 1.5cm, thickness of pipe 2mm, and percentage of open area is 80%, pitch of holes is 2.0cm, Wimet wire 3 is bare wire, and diameter is 0.5cm, and long is 80cm, activated carbon fiber post uses active carbon fiber felt to curl and forms, diameter is 5cm, and long is 75cm, and specific surface area is 1100m
2/ g, porosity is 90%, firm banking adopts polyester material, thick 2.0cm, diameter is 12cm, and external diameter is consistent with porous PVC pipe 5, and top pressure closure 2 adopts PVC plastics to make, and the weight of the described spherical weight that dangles is 1.0kg.Described combined electrode horizontal drowned flow artificial wet land device adopts the material of construction such as PVC polyester, concrete to build.In described combined electrode horizontal drowned flow artificial wet land device, plant growing way can be by the control of harvesting mode.Described combined electrode horizontal drowned flow artificial wet land device moves in horizontal flow mode.
The starting method of combined electrode horizontal drowned flow artificial wet land device of the present invention is: by the concentrated active sludge dilution of taking from sewage work's anaerobic digester, pass in the multimedium filter bed of combined electrode horizontal drowned flow artificial wet land, separately get active sludge and be inoculated on activated carbon fiber post 4.Plantation reed 26 and Canna generalis Bailey 25 seedling are in multimedium filter bed.Wait for 3 weeks ~ 4 weeks, treat that plant growing way is steady, on activated carbon fiber post 4, occur microbial film, combined electrode horizontal drowned flow artificial wet land starts complete.
The operation method of combined electrode horizontal drowned flow artificial wet land device of the present invention is: Jiang Yuanshui passes in settling tank 14, and the residence time is 1.5 hours.Settling tank 14 water outlets enter the water distributor that becomes a mandarin, and control flow by flow control valve 16, multimedium filter bed control water level 75cm.Open direct supply, adjusting strength of current is 15mA.The residence time of sewage in multimedium filter bed reached after 24 hours, and water outlet can reach drainage requirement.
COD in the water inlet of former tank 12 is that 120mg/L ~ 140mg/L, total nitrogen are 60mg/L ~ 65mg/L, the about 2:1 of C/N, water temperature 25
oc ~ 29
oc, the residence time, while being 1.5 days, the water outlet COD of effluent trough 18 was 15mg/L ~ 17mg/L, total nitrogen is 7mg/L ~ 10mg/L, nitrogen removal rate approximately 90%.Denitrification effect is obvious, reaches the one-level A standard in " urban wastewater treatment firm pollutant emission standard (GB 18918-2002) ".
COD in the water inlet of former tank 12 is that 100 mg/L ~ 120mg/L, total nitrogen are 75 mg/L ~ 80mg/L, the about 1.3:1 of C/N, and water temperature is 28
oc ~ 32
othe simulated domestic wastewater of C, the residence time, while being set as 2.0 days, the water outlet COD of effluent trough 18 was 22 mg/L ~ 27mg/L, total nitrogen is 15 mg/L ~ 23mg/L, nitrogen removal rate approximately 80%.Denitrification effect is obvious, reaches the secondary standard in " urban wastewater treatment firm pollutant emission standard (GB 18918-2002) ".
Claims (8)
1. a combined electrode horizontal drowned flow artificial wet land device, it is characterized in that, comprise multimedium filter bed, in multimedium filter bed, be distributed with at least two Activated Carbon Fiber Electrodes assemblies (1), Activated Carbon Fiber Electrodes assembly (1) connects DC power supply system, the both sides of multimedium filter bed are respectively equipped with the water distributor and go out to spread hydrophone of becoming a mandarin, and in multimedium filter bed, plant and are implanted with emergent group, become a mandarin water distributor with go out to spread hydrophone and be connected water drainage-supply system; Described multimedium filter bed is under-filled, and to have median size be the small particle size quartz sand (23) of 0.7cm ~ 1.2cm, top is filled with the large particle diameter quartz sand (24) that median size is 1.5cm ~ 1.8cm, and in multimedium filter bed, total packing height of small particle size quartz sand (23) and large particle diameter quartz sand (24) is 85cm-95cm; The ratio that in described multimedium filter bed short transverse, large particle diameter quartz sand (24) accounts for is successively decreased from feed-water end to water side, each minimizing 5% ~ 8%, the large particle diameter quartz sand of feed-water end (24) accounts for 75% ~ 80% in multimedium filter bed short transverse, described reed (26) is planted in large particle diameter quartz sand and accounts on multimedium filter bed bed body more than 40% ~ 45% height, residue multimedium filter bed space plantation Canna generalis Bailey (25).
2. combined electrode horizontal drowned flow artificial wet land device as claimed in claim 1, it is characterized in that, described DC power supply system comprises potentiostat (8), AC/DC changeover switch (9), negative electrode water proof wire net (10) and anode water proof wire net (11), potentiostat (8) connects 220V power supply and AC/DC changeover switch (9), the negative electrode of AC/DC changeover switch (9) is connected with negative electrode water proof wire net (10), the anode of AC/DC changeover switch (9) is connected with positive wire net (11), negative electrode water proof wire net (10) is connected with the Activated Carbon Fiber Electrodes assembly (1) of 80%-90% number, anode water proof wire net (11) is connected with remaining Activated Carbon Fiber Electrodes assembly (1).
3. combined electrode horizontal drowned flow artificial wet land device as claimed in claim 1, it is characterized in that, described water drainage-supply system comprises raw water box (12), throttling valve (13), settling tank (14), sump pump (15), flowrate control valve (16), under meter (17) and effluent trough (18), raw water box (12) is connected with throttling valve (13), throttling valve (13) is connected with settling tank (14), settling tank (14) is connected with sump pump (15), sump pump (15) connects into water pipe, inhalent siphon connects into spreads hydrophone, inhalent siphon is provided with flowrate control valve (16) and under meter (17), going out to spread hydrophone is connected with rising pipe, rising pipe is provided with flowrate control valve (16) and under meter (17), rising pipe is connected with effluent trough (18).
4. combined electrode horizontal drowned flow artificial wet land device as claimed in claim 1, it is characterized in that, the described water distributor that becomes a mandarin comprises perforation water distributor (19), cloth tank (20) and porous water distribution board (21), perforation water distributor (19) is connected with inhalent siphon, and be located at the top of cloth tank (20), cloth tank (20) is filled rough quartz sand (22), and porous water distribution board (21) is located between cloth tank (20) and multimedium filter bed.
5. combined electrode horizontal drowned flow artificial wet land device as claimed in claim 1, it is characterized in that, the described hydrophone that goes out to spread comprises cloth tank (20) and porous water distribution board (21), cloth tank (20) is filled rough quartz sand (22), porous water distribution board (21) is located between cloth tank (20) and multimedium filter bed, and cloth tank (20) connects rising pipe.
6. combined electrode horizontal drowned flow artificial wet land device as claimed in claim 1, is characterized in that, the planting density of described emergent group is 15 strains/m
2~ 20 strains/m
2.
7. combined electrode horizontal drowned flow artificial wet land device as claimed in claim 1, is characterized in that, described emergent group comprises reed (26) and Canna generalis Bailey (25).
8. combined electrode horizontal drowned flow artificial wet land device as claimed in claim 1, it is characterized in that, described Activated Carbon Fiber Electrodes assembly (1) comprises porous PVC pipe (5), the sidewall of porous PVC pipe (5) is coated with nylon window screening (27), the top of porous PVC pipe (5) is provided with top pressure closure (2), the bottom of porous PVC pipe (5) is provided with firm banking (7), in porous PVC pipe (5), be provided with activated carbon fiber post (4), the middle part of activated carbon fiber post (4) is provided with Wimet wire (3), top pressure closure (2) is exposed in the upper end of Wimet wire (3), the lower end of Wimet wire (3) connects the spherical weight that dangles, firm banking (7) is connected with the base plate of multimedium filter bed.
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| CN104085990B (en) * | 2014-07-17 | 2016-02-17 | 交通运输部科学研究院 | A kind of auxiliary highway facilities sewage multimedium biological and ecological coprocessing system and method |
| CN105016473A (en) * | 2015-06-12 | 2015-11-04 | 中国电建集团贵阳勘测设计研究院有限公司 | Heavy metal ion industrial wastewater treatment method and apparatus |
| CN106882857A (en) * | 2017-03-24 | 2017-06-23 | 陕西科技大学 | A kind of system and method for water plant-electrolysis combined purifying azo dye wastewater |
| CN108585203A (en) * | 2018-05-18 | 2018-09-28 | 浙江水利水电学院 | A kind of modularization electrode biofilm reactor for farmland ditch in-situ denitrification dephosphorization |
| CN110668556B (en) * | 2019-10-09 | 2022-04-15 | 哈尔滨工业大学 | Visible light catalysis coupling bioelectrochemical wetland system and application thereof |
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|---|---|---|---|---|
| KR20060036961A (en) * | 2004-10-27 | 2006-05-03 | 한상재 | Development of electrode compartment for enhanced electrokinetic remediation and post-treatment of waste water |
| CN101007688B (en) * | 2007-01-19 | 2010-10-06 | 天津市水利科学研究所 | Stirring type undercurrent wetland water body purification apparatus and water body purification method |
| CN101987760B (en) * | 2009-07-31 | 2012-06-27 | 辽宁北方环境保护有限公司 | Horizontal underflow constructed wetland capable of strengthening denitrification at low temperature |
| CN201890808U (en) * | 2010-11-15 | 2011-07-06 | 东华大学 | Power-on subsurface flow constructed wetland |
| MX338620B (en) * | 2011-05-13 | 2016-03-22 | José Rogelio Pérez Monsrreal | Modular plant for the treatment of waste water. |
| CN102531179B (en) * | 2011-11-18 | 2014-02-26 | 北京东溪柳环保工程有限公司 | System and method for stably and efficiently treating sewage of artificial wetland |
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2013
- 2013-04-09 CN CN201310122176.XA patent/CN103214093B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203284289U (en) * | 2013-04-09 | 2013-11-13 | 东华大学 | Combined electrode horizontal subsurface flow wet land device for efficient nitrogen removing of domestic sewage |
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