CN1263688C - Composite artificial wet land denitrifying and dephosphorizing method for living waste water vertical fluid-horizontal fluid - Google Patents

Composite artificial wet land denitrifying and dephosphorizing method for living waste water vertical fluid-horizontal fluid Download PDF

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CN1263688C
CN1263688C CNB2004100274224A CN200410027422A CN1263688C CN 1263688 C CN1263688 C CN 1263688C CN B2004100274224 A CNB2004100274224 A CN B2004100274224A CN 200410027422 A CN200410027422 A CN 200410027422A CN 1263688 C CN1263688 C CN 1263688C
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artificial wetland
horizontal flow
wetland
water
vertical current
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CN1583604A (en
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崔理华
朱夕珍
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South China Agricultural University
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South China Agricultural University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The present invention provides a composite vertical-horizontal current artificial wetland denitrifying and dephosphorizing method for domestic sewage, which relates to the technical field of environmental protection governing. A composite system is formed by the series connection of vertical current artificial wetland and horizontal current artificial wetland for treating domestic sewage, wherein the vertical current artificial wetland is operated by adopting a wetting and drying alternative mode, and the horizontal current artificial wetland adopts a continuously-running mode. Partial raw sewage is directly put into the horizontal current artificial wetland to replenish carbon sources for improving the denitrifying effect of the horizontal current artificial wetland, and the vertical current artificial wetland is filled with blast-furnace slag rich in oxides of ferrum, calcium, silicon, aluminum, etc. The horizontal current artificial wetland is filled with marble or limestone and coal slag rich in calcium, and the flowers planted on the vertical current artificial wetland are terrestrial flowers comprising india canna, China rose and cut flowers-rose and African chrysanthemum. Vegetables planted on the horizontal current artificial wetland comprise watercress, water spinach, Chinese chive, lettuce, cucumber, tomatoes (cherry tomatoes), Chinese arrowhead and water bamboos.

Description

Sanitary sewage vertical current-horizontal flow combined artificial wetland denitrification and dephosphorization method
Technical field
Patent of the present invention relates to sewage disposal technology.
Technical background
The sanitary sewage artificial wet land treating method mainly contains three kinds of vertical current constructed wetland, horizontal flow artificial wetland and horizontal flow and vertical-current compound manual wetting grounds.
More than the vertical current constructed wetland bed height 100cm, usually adopt thinner matrix such as sand etc. as filtration media, sewage is handled obtaining in the downward vertical diafiltration process in top layer, and the plant great majority that it adopted are reed, cyperus alternifolius, Caulis Miscanthis floriduli, power grass, nutgrass flatsedge and Canna generalis Bailey etc. again.
About 60~the 80cm of horizontal drowned flow artificial wet land bed height, adopt thick matrix such as gravel as treatment media, sewage is horizontal flow under the face of land of artificial swamp, and kind is implanted with large-scale emergent such as reed, cattail, Scirpus tabernaemontani, iris and the calamus etc. that secrete the oxygen ability in hypothallus, utilizes the oxygen ability of secreting of waterplant to provide oxygen for the organic substance that the microbial film on the artificial swamp matrix decomposes in the sewage.
Horizontal flow and vertical-current compound manual wetting ground be by horizontal flow artificial wetland preceding, vertical current constructed wetland after the order composition combined artificial wetland that is together in series.Sanitary sewage is at first removed most of SS, COD, BOD through horizontal flow artificial wetland 5With the part ammonia nitrogen, again to the vertical current constructed wetland water distribution, finish the thorough removal of oxygen consumption organic and remaining ammonia nitrogen is nitrated fully, and the nitration treatment water outlet of vertical current constructed wetland is back to the horizontal flow artificial wetland head end by 50~100% reflux ratios carries out the internal carbon source pre-denitrification and denitrogenation and handle; In horizontal flow artificial wetland and vertical current constructed wetland, fill the high phosphorus adsorbing base, and on horizontal flow artificial wetland matrix planting aquatic plants, planting aquatic plants or Lu Sheng flowers on substrate of vertical-flow constructed wetlands.
The weak point that exists has: there are shortcomings such as aerobic condition deficiency in (1) horizontal flow artificial wetland, though it can remove SS well, and also can remove some BOD.But it is bad to the removal effect of ammonia nitrogen usually.Because it can not finish the nitrifying process of most of waste water, even it has stronger denitrification ability, thereby can not independently finish two treating processess of nitrification and denitrification of waste water, to reach the purpose that denitrogenation of waste water is handled.Phosphor-removing effect is also relatively poor simultaneously, generally have only 30-40%, and the gravel matrix of existing extensive employing is shorter to the saturated life-span of the absorption of phosphorus, is generally 2~3 years; (2) vertical current constructed wetland is stronger to the processing power and the nitrated ability of oxygen consumption organic in the waste water, and it has better aerobic condition than horizontal flow artificial wetland, and to BOD in the waste water 5All better with the removal effect of COD, but poor to the removal effect of SS than horizontal flow artificial wetland; Though it is very capable to the nitration treatment of waste water, its denitrification ability is also poor than horizontal flow artificial wetland, thereby can not finish two treating processess of nitrification and denitrification of waste water separately, to reach the purpose that denitrogenation of waste water is handled.Clearance to phosphorus also has only 40-50% simultaneously, and the dephosphorization life-span of sand, gravel matrix is shorter, is generally 3-4.(3) though horizontal flow and vertical-current compound manual wetting ground can be finished the nitrification and denitrification of a part of nitrogen, but nitrogen removal rate is not high, only be 30-45%, and need be with the nitration treatment effluent recycling, both increased power consumption, increase along with reflux ratio has reduced the sewage disposal water yield again, has increased floor space, has also reduced the clearance of phosphorus simultaneously; Secondly, horizontal flow artificial wetland adopts the phosphor-removing effect of Wingdale, marble or rhombspar matrix not high, be 30-50% only, thereby influenced the dephosphorization life-span of combined artificial wetland, and can not planting vegetable on horizontal flow artificial wetland etc. cash crop; The 3rd, the oxygen consumption processing power and the nitrated ability of vertical current constructed wetland can not be brought into play fully, and floor space is also bigger.
Summary of the invention
The purpose of the invention is: 1. vertical current and horizontal flow artificial wetland are pressed vertical current preceding, horizontal flow after order form combined artificial wetland, make full use of vertical current constructed wetland and finish the major part of oxygen consumption organic and suspended substance is removed and nitrated fully to sanitary sewage, and utilize horizontal flow artificial wetland to finish SS, COD and BOD 5Thorough removal, and finish by denitrification the major part of nitrogen removed; 2. the sub-fraction raw sewerage is directly entered the horizontal flow artificial wetland head end, under the anoxia condition of horizontal flow artificial wetland, utilize the organism in the sanitary sewage to finish the denitrification denitrogenation process as carbon source; 3. fill blast furnace slag matrix at vertical current constructed wetland, fill slag and blast furnace slag matrix, to reach the higher total tp removal rate and the purposes such as work-ing life of prolongation matrix dephosphorization at horizontal flow artificial wetland; 4. in vertical current constructed wetland plantation Lu Sheng flowers and fresh-cut flowers, at the horizontal flow artificial wetland planting vegetable, to increase the economic benefit and the aesthetic value of combined artificial wetland.
Sanitary sewage vertical current-horizontal flow combined artificial wetland denitrification and dephosphorization method is: vertical current constructed wetland and horizontal flow artificial wetland are together in series, and vertical current constructed wetland is preceding, horizontal flow artificial wetland after.Sanitary sewage at first after the bed body of vertical current constructed wetland is handled, is removed part SS, COD, BOD 5And carry out nitrification.The hydrostaticpressure of then passing through water collecting basin is to the low slightly horizontal flow artificial wetland gravity flow water distribution of physical features, in horizontal flow artificial wetland, utilize partial organic substances in relatively poor anoxia condition that provides of vegetables root system oxygen delivery capacity and the water outlet of vertical current constructed wetland nitration treatment as carbon source, finish the denitrification denitrogenation process, if carbon source is not enough or can not form anoxia condition because of DO content in the nitration treatment water outlet is higher, to directly enter horizontal flow artificial wetland front end supplementary carbon source to the part raw sewerage, with the removal effect of stream of improving the standard to nitrogen.In vertical current constructed wetland and horizontal flow artificial wetland, fill efficient dephosphorization matrix, and on vertical current constructed wetland, plant Lu Sheng flowers and fresh-cut flowers, planting vegetable on horizontal flow artificial wetland.
Sanitary sewage vertical current-horizontal flow combined artificial wetland phosphorus removing method is the technical process that utilizes above-mentioned denitrogenation method, finishes the removal to phosphorus in the waste water in denitrogenation.Concrete grammar is: at first, in vertical current constructed wetland, fill the matrix blast furnace slag that phosphorus is had very strong power surely, and plantation Canna generalis Bailey, Chinese rose and rose, utilize the most of phosphorus in blast furnace slag matrix and the flower plant removal waste water; In the water distributing area of horizontal flow artificial wetland and catchment area, fill the matrix such as marble or the Wingdale that phosphorus there are more strong power surely, in the bed body, fill slag, fill blast furnace slag at bed body surface layer, and planting vegetable such as green water cress, water spinach (leading to) dish, leek, romaine lettuce, cucumber, tomato (cherry tomato), arrowhead and wild rice stem etc., utilize a part of phosphorus in matrix and the vegetables removal sewage.
Now in conjunction with the accompanying drawings the present invention is explained:
Fig. 1 is sanitary sewage vertical current-horizontal flow combined artificial wetland structure iron.
Fig. 2 is sanitary sewage vertical current-horizontal flow combined artificial wetland vertical current bed structure figure.
Fig. 3 is sanitary sewage vertical current-horizontal flow combined artificial wetland horizontal flow bed structure figure.
Among the figure: 1-grid, 2-settling tank, 3-waste pipe, 4-water distribution person in charge, 5-water distribution branch pipe, 6-efficient dephosphorization hypothallus, 7-gravel blanket, 8-treat effluent water shoot, 9-water collecting basin, the 10-water inlet person in charge, 11-water distribution branch pipe, 12-gravel water distributing area, 13-efficient dephosphorization hypothallus, 14-tectum, 15-gravel catchment area, 16- Water shoot, 17-clean water basin, 18-waste pipe.
Life sewage vertical-horizontal flow combined artificial wetland is comprised of vertical current constructed wetland, collecting-tank and horizontal flow artificial wetland, clear water reserviors, press vertical current constructed wetland front, horizontal flow artificial wetland after the order composition combined artificial wetland that is together in series. In the bed body of vertical current constructed wetland, place efficient dephosphorization matrix such as blast furnace slag, and plantation Lu Sheng flowers and fresh-cut flowers. In the bed body of horizontal flow artificial wetland, place efficient dephosphorization matrix such as slag and blast furnace slag, at the cover surface planting vegetable. After the effect such as the fixation of sanitary sewage efficient dephosphorization matrix in vertical current constructed wetland and the picked-up effect of root system of plant and the physics that is accompanied by, chemistry and microorganism, finish organic part is removed and fully nitrated, sewage enters the hydrostatic pressure of utilizing collecting-tank behind the collecting-tank and drop to the horizontal flow artificial wetland water distribution that flows automatically; Utilize the fixation of horizontal flow artificial wetland efficient dephosphorization matrix and picked-up effect and the effects such as the physics that is accompanied by, chemistry and microorganism of root system of plant, remove most of SS, COD, BOD5, finish removal to nitrogen by denitrification, and make the part raw sewerage directly enter the horizontal flow artificial wetland supplementary carbon source, improve the removal effect to nitrogen.
The cellular constructions such as vertical current constructed wetland, collecting-tank, horizontal flow artificial wetland and clear water reserviors in life sewage vertical-horizontal flow combined artificial wetland are formed by connecting by pipeline.
The vertical fluidized bed of sanitary sewage combined artificial wetland is comprised of bed body and water distributor, and make with non-leakage material bed wall and the bottom of bed body, if build on the ground, the bed wall is the brick structure of cement plaster, and the bottom is xoncrete structure. The bed body is distributed as gravel blanket 7 and efficient dephosphorization hypothallus 6 from below to up. More than the bed height 90cm, gravel blanket 7 thickness 10~15cm, the lime stone of the about 4cm of particle diameter that from bottom to top distributes and the lime stone of the about 1cm of particle diameter; Efficient dephosphorization hypothallus thickness is 70~80cm, and the efficient dephosphorization hypothallus is placed blast furnace slag, and the blast furnace slag particle diameter is 0.25mm~5mm. Water distributor is distributed in the efficient dephosphorization stromal surface, adopts surperficial water distribution with anti-blocking. The flowers of the anti-LDO of plantation such as rose, carnation, gladiolus, African Chrysanthemum, lily, cyperus flower, canna etc. in vertical fluidized bed body.
Water distributor is distributed in the surface of efficient dephosphorization hypothallus, water distributor is comprised of water distribution supervisor 4 and many water distribution branch pipes 5, water distribution supervisor 4 is distributed in the centre of a body, its length is suitable with the bed body length, wherein end sealing, and the other end is connected with sewage water inlet pipe 3, water distribution branch pipe 5 is fixedly connected on water distribution supervisor's both sides, other end sealing, its length are half of bed body width, and the downward position of water distribution branch pipe has aperture.
The bed end of vertical current constructed wetland, has certain drainage grade and is convenient to draining, fixes a drainpipe 8 on water port, is provided with valve on water shoot 8, with the drainage speed of control treat effluent.Build the water collecting basin 9 that links into an integrated entity with the bed body at water outlet one end of vertical current constructed wetland bed body, the treated sewage of bed body is discharged into water collecting basin 9 by water shoot 8, and the water-in of the water port of water shoot 8 and water inlet pipe 11 will have drop.Water collecting basin 9 bottoms are provided with water shoot 10, and water shoot 8 and water shoot 10 are provided with valve, with the control drainage speed.Connect an arm 18 to water collecting basin 9 from sewage water inlet pipe 3 in addition, make a part of sewage directly enter the horizontal flow artificial wetland supplementary carbon source.
Make with non-leakage material the bed wall and the bottom of the horizontal flow artificial wetland bed body in the sanitary sewage vertical current one horizontal flow combined artificial wetland, and its wall is the brick structure of finishing cement if build on the ground, and the bottom is a concrete structure.
Horizontal flow artificial wetland bed body sets gradually gravel water distributing area 12 from the water-in to the water outlet, efficient dephosphorization hypothallus 13, and gravel catchment area 15, bed body top is provided with water inlet pipe 11, and establish the bottom Font water shoot 16.Gravel water distributing area 12 and gravel catchment area 15 respectively account for below 20% of body total length, and efficient dephosphorization hypothallus 13 accounts for more than 60% of body total length.Broken marble or Wingdale are filled in gravel water distributing area 12 and gravel catchment area 15, and particle diameter is 3~5cm.Efficient dephosphorization hypothallus 13 is filled slag.With the filling thickness of blast furnace slag gravel water distributing area 12, gravel catchment area 15 and efficient dephosphorization hypothallus 13 fillers be 70~80cm, on filler, fill blast furnace slag as tectum 14, the blast furnace slag cover thickness is 10~15cm, and horizontal flow artificial wetland bed height degree is more than the 90cm.On tectum, plant vegetables such as green water cress, water spinach (leading to) dish, leek, romaine lettuce, cucumber, tomato (cherry tomato) arrowhead, wild rice stem.Below the blast furnace slag tectum, water inlet pipe 11 is set, water inlet pipe 11 is connected with the water shoot 8 of vertical fluidized bed.Water outlet one end at horizontal flow artificial wetland bed body is built clean water basin 17, and the treated sewage of bed body passes through Font water shoot 16 is discharged into clean water basin 17, Font water shoot 16 is provided with valve, with the control drainage speed.
Clean water basin 17 are sand drains of collecting the horizontal flow artificial wetland treat effluent, and its wall and bottom are that non-leakage material is made, if build on the ground, its wall is the brick structure of finishing cement, and the end is a concrete structure.In order to reduce the laid down cost for the treatment of pond, three horizontal flow artificial wetland parallel connections are connected in three vertical current constructed wetland parallel connections with a water collecting basin.Each vertical current constructed wetland all is equipped with the water shoot and the water collecting basin connection of valve, is provided with water shoot and three horizontal flow artificial wetlands connections at the bottom of the water collecting basin, and each horizontal flow artificial wetland all is equipped with the water shoot and the clean water basin connection of valve.
The present invention is such realization: the foreign material that sanitary sewage at first removes in the decontaminated water through grid 1, sewage enters settling tank 2, by fresh water pump settling tank 2 sewage are extracted out, along waste pipe 3 enter water distribution be responsible for 4 and water distribution branch pipe 5 enter vertical current constructed wetland, sewage is downward undercurrent in vertical current constructed wetland, through efficient dephosphorization hypothallus 6, gravel blanket 7, sewage through behind the vertical current constructed wetland since the picked-up effect of the adsorption of matrix and root system of plant finish the thorough removal of oxygen consumption organic and nitrated fully, the sewage of vertical current constructed wetland utilizes vertical current constructed wetland bed body and water collecting basin to have drop, sewage flows into water collecting basin through water shoot 8, water shoot is provided with valve, the flow of control sewage and the moisture storage capacity of vertical current constructed wetland, the sewage of water collecting basin 9 utilizes the drop of vertical current constructed wetland and horizontal flow artificial wetland, flow through gravel water distributing area 12, efficient dephosphorization hypothallus 13 and the gravel catchment area 15 of horizontal flow artificial wetland.Sewage utilizes the filteration of horizontal flow artificial wetland cobble-stone hole through behind the horizontal flow artificial wetland, removes the SS in the sewage.Sewage is through horizontal flow artificial wetland, utilizes the adsorption of slag matrix of horizontal flow artificial wetland and root system of plant picked-up effect to remove COD, BOD in the sewage 5And most ammonia-nitrogen.The sewage of horizontal flow artificial wetland enters clean water basin 17 through water shoot 16, and water shoot 16 is Font is located at horizontal fluidized bed bottom, and is provided with valve, the velocity of discharge of control sewage and the moisture storage capacity of horizontal fluidized bed.In addition, make the part raw sewerage directly enter water collecting basin 9, utilize the drop of vertical current constructed wetland and horizontal flow artificial wetland to enter horizontal fluidized bed then, with supplementary carbon source along sewage water inlet pipe 18.
Innovation and creation have the following advantages:
1. utilize vertical current constructed wetland to remove part SS, COD, BOD 5Nitrated fully with waste water utilizes horizontal flow artificial wetland to finish COD, BOD 5With the major part removal function of SS and the denitrification of waste water, thereby finish nitrification and denitrification to waste water, and the removal function that makes vertical current and horizontal flow artificial wetland has obtained the performance of very big degree, shorten the hydraulic detention time of horizontal flow artificial wetland, reduced the floor space of vertical current and horizontal flow combined artificial wetland.
2. sewage utilizes the BOD in low formed anoxia condition of vegetables oxygen delivery capacity and the water outlet of vertical current constructed wetland nitration treatment through the nitrated laggard horizontal flow artificial swamp of going into of vertical current constructed wetland in horizontal flow artificial wetland 5, COD and horizontal flow artificial wetland cumulative organic matter finish the denitrification denitrogenation process of sanitary sewage as carbon source, in the nitration treatment water outlet under not enough or its DO content condition with higher of carbon source, a part of raw sewerage is directly entered horizontal flow artificial wetland as carbon source or formation anoxia condition, the denitrification denitrogenation effect of sanitary sewage can be finished, horizontal flow artificial wetland can be increased again BOD 5, COD the removal ability.
3. vertical current and horizontal flow combined artificial wetland do not need the nitration treatment water outlet that refluxes, thereby solved the reflux problem of horizontal flow-vertical-current compound manual wetting ground, power consumption and processing cost have been reduced, and improved the clearance of total nitrogen, shortened hydraulic detention time and reduced floor space, also prevented to reduce the generation of phenomenon simultaneously because of the caused tp removal rate of nitration treatment effluent recycling.
4. the blast furnace slag matrix of utilizing vertical current constructed wetland to fill is finished the removal function to most of phosphorus in the sanitary sewage; Utilize the slag of filling in the horizontal flow artificial wetland and blast furnace slag matrix to the phosphorus fixation effect, finish the part of phosphorus in the waste water is removed function.Utilize the picked-up effect of Lu Sheng flowers, fresh-cut flowers and the vegetables root system of planting in vertical current and the horizontal flow artificial wetland to remove part phosphorus simultaneously, thereby combined artificial wetland is reached more than 85~95% to the clearance of total phosphorus in the sanitary sewage, the concentration of total phosphorus is less than 1mg/L in the treat effluent, reach municipal sewage plant's first discharge standard, and the invention technology is to reaching more than 8~10 years in work-ing life of phosphorus.
5. utilize vertical current constructed wetland to remove most of oxygen consumption organic COD and BOD in the sanitary sewage 5, solved the mashed root problem of anoxic of horizontal flow artificial wetland planting vegetable; Utilize vertical current constructed wetland to finish the nitrated of most ammonia-nitrogen and organonitrogen in the sanitary sewage, the nitrate nutritive medium that can directly utilize in a large number is provided for the horizontal flow artificial wetland planting vegetable; Utilize vertical current constructed wetland to remove most pathogenic micro-organisms and bacterium, require to provide reliable guarantee for the horizontal flow artificial wetland planting vegetable reaches safe edible.
Embodiment:
The day designing treatment water yield 0.9~3.0m 3/ d.
Design variable:
Grid: adopt 2cm * 2cm wire netting, stand in the inspection chamber that septic tank effluent mouth and underground aqueduct join.
Settling tank: size is 2.0m * 1.8m * 2.0m, available depth 1.0m, useful volume 3.6m 3, the brick structure finishing cement.
Vertical current constructed wetland: design outside dimension length * wide * height is 3.35m * 3.67m * 0.9m, divides three lattice, single pond practical dimensions length * wide 2.9m * 1.1m * 0.9m.Actual usable floor area is 12m altogether 2Vertical current mattress layer diameter is that the Wingdale of 8cm and 4cm is formed thick 10~15cm; Efficient dephosphorization matrix bed thickness 75~80cm.The practical dimensions of water collecting basin is long * wide be 0.4m * 3.37m.Water collecting basin is collected after three vertical fluidized bed treat effluent mix, by pipeline, valve by hydrostaticpressure to three horizontal fluidized beds gravity flow water distributions.
Horizontal flow artificial wetland: design internal diameter size length * wide * height is one of the rectangle form pool of 2.7m * 3.37m * 0.9m.Horizontal fluidized bed is divided into three pond parallel runnings again, and the size length * wide * height of single pond practicality is 2.7m * 1.1 * 0.9m.Horizontal fluidized bed divides gravel water distributing area, efficient dephosphorization hypothallus and gravel catchment area, respectively accounts for 1/5,3/5,1/5 of a body length, and what fill respectively is Wingdale or marble, slag, Wingdale or marble.Cover the blast furnace slag of a bed thickness 10cm on it.
Working time and operation scheme: since in March, 2004 trial run, the HRT of employing is 1,2 and 3 day.On 3 vertical fluidized beds, the 1st (VF1) is the not contrast of kind of plant, and the 2nd (VF2) plants rose, and the 3rd (VF3) plants Canna generalis Bailey.On 3 horizontal fluidized beds, the 1st (HF1) is the not contrast of kind of plant, the logical dish of the 2nd (HF2) plantation, the 3rd (HF3) plantation green water cress and leek.
Treatment effect (mg/L, %): shown in table 1, table 2, table 3 and table 4.
Table 1 is a sanitary sewage after vertical current-horizontal flow combined artificial wetland denitrogenation dephosphorizing is handled, the COD change in concentration situation in the sewage;
Table 2 is a sanitary sewage after vertical current-horizontal flow combined artificial wetland denitrogenation dephosphorizing is handled, the BOD in the sewage 5The change in concentration situation;
Table 3 is a municipal effluent after the combined artificial wetland denitrogenation dephosphorizing is handled, the TN change in concentration situation in the sewage;
Table 4 is a municipal effluent after vertical current-horizontal flow combined artificial wetland denitrogenation dephosphorizing is handled, the TP change in concentration situation in the sewage.
COD change in concentration situation
Date Hydraulic detention time Sewage ??VF1 ??VF2 ??VF3 ??HF1 ??HF2 ??HF3
??3/15/04 1 day Concentration (mg/L) ??365.31 ??292.68 ??174.53 ??153.93 ??100.67 ??43.62 ??67.18
Clearance (%) ??19.88 ??52.23 ??57.86 ??72.44 ??88.06 ??81.61
??4/8/04 1 day Concentration (mg/L) ??320.95 ??124.24 ??144.20 ??137.55 ??94.51 ??58.42 ??43.34
Clearance (%) ??61.29 ??55.07 ??57.14 ??70.55 ??81.80 ??86.50
??5/10/04 1 day Concentration (mg/L) ??326.22 ??104.59 ??87.41 ??144.89 ??60.91 ??93.84 ??74.32
Clearance (%) ??67.94 ??73.21 ??55.59 ??81.33 ??71.23 ??77.22
??3/17/04 2 days Concentration (mg/L) ??389.66 ??243.51 ??192.45 ??158.35 ??190.18 ??124.03 ??137.05
Clearance (%) ??37.51 ??50.61 ??59.36 ??51.19 ??68.17 ??64.83
??4/10/04 2 days Concentration (mg/L) ??383.80 ??133.26 ??170.83 ??181.48 ??118.52 ??54.32 ??103.70
Clearance (%) ??65.28 ??55.50 ??52.72 ??69.12 ??85.85 ??72.98
??5/12/04 2 days Concentration (mg/L) ??290.27 ??55.09 ??175.15 ??130.86 ??58.50 ??94.62 ??58.78
Clearance (%) ??81.02 ??39.66 ??54.92 ??79.85 ??67.40 ??79.75
??3/20/04 3 days Concentration (mg/L) ??468.22 ??260.05 ??199.69 ??209.20 ??102.84 ??83.82 ??109.46
Clearance (%) ??44.46 ??57.35 ??55.32 ??78.04 ??82.10 ??76.62
??4/14/04 3 days Concentration (mg/L) ??390.12 ??166.26 ??273.25 ??223.87 ??73.35 ??86.17 ??95.78
Clearance (%) ??57.38 ??29.96 ??42.62 ??81.20 ??77.91 ??75.45
??5/15/04 3 days Concentration (mg/L) ??244.01 ??22.65 ??64.52 ??136.77 ??21.52 ??6.55 ??48.65
Clearance (%) ??90.72 ??73.56 ??43.95 ??91.18 ??97.32 ??80.06
Table 1
BOD 5The change in concentration situation
Date Hydraulic detention time Sewage ??VF1 ??VF2 ??VF3 ??HF1 ??HF2 ??HF3
??3/15/04 1 day Concentration (mg/L) ??227.86 ??112.46 ??113.17 ??178.29 ??15.75 ??44.04 ??7.96
Clearance (%) ??50.64 ??50.33 ??21.76 ??93.09 ??80.67 ??96.51
??4/8/04 1 day Concentration (mg/L) ??207.48 ??60.24 ??89.69 ??76.97 ??61.01 ??37.19 ??24.60
Clearance (%) ??70.97 ??56.77 ??62.90 ??70.59 ??82.08 ??88.14
??5/10/04 1 day Concentration (mg/L) ??230.55 ??66.67 ??62.98 ??96.14 ??26.75 ??26.93 ??24.49
Clearance (%) ??71.08 ??72.68 ??58.30 ??88.40 ??88.32 ??89.38
??3/17/04 2 days Concentration (mg/L) ??134.18 ??67.77 ??48.82 ??98.88 ??90.24 ??81.88 ??81.05
Clearance (%) ??49.49 ??63.62 ??26.31 ??32.75 ??38.98 ??39.60
??4/10/04 2 days Concentration (mg/L) ??164.58 ??62.76 ??82.04 ??2.93 ??53.62 ??41.88 ??41.59
Clearance (%) ??61.86 ??50.15 ??98.22 ??67.42 ??74.55 ??74.73
??5/12/04 2 days Concentration (mg/L) ??108.47 ??22.80 ??30.24 ??30.17 ??33.24 ??9.65 ??1.81
Clearance (%) ??78.98 ??72.12 ??72.19 ??69.36 ??91.10 ??98.33
??3/20/04 3 days Concentration (mg/L) ??222.75 ??106.70 ??48.88 ??120.03 ??83.36 ??69.81 ??57.01
Clearance (%) ??52.10 ??78.06 ??46.11 ??62.58 ??68.66 ??74.41
??4/14/04 3 days Concentration (mg/L) ??114.44 ??102.04 ??108.05 ??134.22 ??42.61 ??33.46 ??34.46
Clearance (%) ??10.84 ??5.58 ??- ??62.76 ??70.76 ??69.88
??5/15/04 3 days Concentration (mg/L) ??96.65 ??31.89 ??36.17 ??36.09 ??40.10 ??40.10 ??42.05
Clearance (%) ??67.00 ??62.57 ??62.66 ??58.51 ??58.51 ??56.50
Table 2
TN change in concentration situation
Date Hydraulic detention time Sewage ??VF1 ??VF2 ??VF3 ??HF1 ??HF2 ??HF3
??3/15/04 1 day Concentration (mg/L) ??140.04 ??123.72 ??143.44 ??133.00 ??113.62 ??102.23 ??106.76
Clearance (%) ??11.65 ??- ??5.03 ??18.87 ??27.00 ??23.77
??4/8/04 1 day Concentration (mg/L) ??190.65 ??178.73 ??169.06 ??167.31 ??121.12 ??109.74 ??124.44
Clearance (%) ??6.25 ??11.32 ??12.24 ??36.47 ??42.44 ??34.73
??5/10/04 1 day Concentration (mg/L) ??136.65 ??69.77 ??74.05 ??81.44 ??95.58 ??86.29 ??86.82
Clearance (%) ??48.94 ??45.81 ??40.40 ??30.05 ??36.85 ??36.46
??3/17/04 2 days Concentration (mg/L) ??120.03 ??128.70 ??152.53 ??139.49 ??117.37 ??122.17 ??112.29
Clearance (%) ??- ??- ??- ??- ??2.21 ??- ??6.45
??4/10/04 2 days Concentration (mg/L) ??208.53 ??181.83 ??208.60 ??189.75 ??128.31 ??93.36 ??145.12
Clearance (%) ??12.80 ??- ??9.01 ??38.47 ??55.23 ??30.41
??5/12/04 2 days Concentration (mg/L) ??106.45 ??117.53 ??192.97 ??147.60 ??69.07 ??68.94 ??92.96
Clearance (%) ??- ??- ??- ??- ??35.11 ??35.23 ??12.67
??3/20/04 3 days Concentration (mg/L) ??145.32 ??143.19 ??176.52 ??149.53 ??123.16 ??133.75 ??140.83
Clearance (%) ??1.47 ??- ??- ??15.25 ??7.97 ??3.10
??4/14/04 3 days Concentration (mg/L) ??193.92 ??156.51 ??176.77 ??186.96 ??73.49 ??69.26 ??76.03
Clearance (%) ??19.29 ??8.85 ??3.59 ??62.10 ??64.29 ??60.79
??5/15/04 3 days Concentration (mg/L) ??130.50 ??88.53 ??129.24 ??115.21 ??58.04 ??50.71 ??59.53
Clearance (%) ??32.16 ??0.97 ??11.72 ??55.53 ??61.14 ??54.38
Table 3
TP change in concentration situation
Date Hydraulic detention time Sewage ??VF1 ??VF2 ??VF3 ??HF1 ??HF2 ??HF3
??3/15/04 1 day Concentration (mg/L) ??10.96 ??6.61 ??0.74 ??1.13 ??1.48 ??1.47 ??1.22
Clearance (%) ??39.74 ??93.23 ??89.70 ??86.53 ??86.59 ??88.88
??4/8/04 1 day Concentration (mg/L) ??14.49 ??7.30 ??1.64 ??3.09 ??2.52 ??1.87 ??1.83
Clearance (%) ??49.61 ??88.65 ??78.66 ??82.58 ??87.12 ??87.34
??5/10/04 1 day Concentration (mg/L) ??13.68 ??2.46 ??1.09 ??3.1 ??1.98 ??3.79 ??2.12
Clearance (%) ??82.02 ??92.05 ??77.33 ??85.52 ??72.27 ??84.52
??3/17/04 2 days Concentration (mg/L) ??10.97 ??5.79 ??1.38 ??1.56 ??2.33 ??2.40 ??2.37
Clearance (%) ??47.24 ??87.40 ??85.74 ??78.79 ??78.13 ??78.37
??4/10/04 2 days Concentration (mg/L) ??7.12 ??5.21 ??2.04 ??2.69 ??2.00 ??1.60 ??1.72
Clearance (%) ??26.87 ??71.31 ??62.18 ??71.84 ??77.59 ??75.90
??5/12/04 2 days Concentration (mg/L) ??9.59 ??1.85 ??1.32 ??2.03 ??1.21 ??1.13 ??1.27
Clearance (%) ??80.71 ??86.27 ??78.86 ??87.37 ??88.18 ??86.79
??3/20/04 3 days Concentration (mg/L) ??15.30 ??7.11 ??0.62 ??1.94 ??1.81 ??1.74 ??1.40
Clearance (%) ??53.55 ??95.92 ??87.34 ??88.17 ??88.68 ??90.87
??4/14/04 3 days Concentration (mg/L) ??13.41 ??5.62 ??4.06 ??2.66 ??2.31 ??2.08 ??2.20
Clearance (%) ??58.12 ??69.69 ??80.16 ??82.80 ??84.47 ??83.58
??5/15/04 3 days Concentration (mg/L) ??8.83 ??3.53 ??1.07 ??2.10 ??1.23 ??1.00 ??1.03
Clearance (%) ??60.05 ??87.87 ??76.18 ??86.12 ??88.65 ??88.35
Table 4

Claims (2)

1, sanitary sewage vertical current-horizontal flow combined artificial wetland denitrification and dephosphorization method, it is characterized in that by vertical current constructed wetland preceding, horizontal flow artificial wetland after the order composition combined artificial wetland that is together in series, sanitary sewage is at first through vertical current constructed wetland, pass through horizontal flow artificial wetland again, and make the part raw sewerage directly enter horizontal flow artificial wetland with supplementary carbon source, in the bed body of vertical current constructed wetland, place blast furnace slag, in horizontal flow artificial wetland bed body, place slag, and with the covering material of blast furnace slag as bed body surface layer; Plantation Lu Sheng flowers and fresh-cut flowers on substrate of vertical-flow constructed wetlands, planting vegetable on horizontal flow artificial wetland matrix.
2, according to the said denitrification and dephosphorization method of claim 1, it is characterized in that: the Lu Sheng flowers are Canna generalis Bailey, and the fresh-cut flowers are rose; Vegetables are green water cress, water spinach, leek, romaine lettuce, cucumber, tomato, arrowhead and wild rice stem.
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CN100337939C (en) * 2005-03-29 2007-09-19 华南农业大学 Method for treating home wastewater through artificial wetland combined vertical current with surface current
CN100366551C (en) * 2006-03-10 2008-02-06 宁波工程学院 Method and its device for denitrifying and removing pollutant of waste water
CN100418904C (en) * 2006-07-03 2008-09-17 华南农业大学 Vertical current and horizontal current integrated composite artificial wetland treatment method for treating urban sewage
CN101186382B (en) * 2007-11-28 2010-06-02 浙江师范大学 Stereo artificial wetland system for treating sewage
CN101638264B (en) * 2009-08-27 2011-04-06 同济大学 Sponge anti-clogging strengthening compound flow constructed wetland domestic sewage treatment device
CN101781061B (en) * 2010-03-02 2011-11-16 河北农业大学 Method for plant arrangement of vertical flow and horizontal subsurface flow combined artificial wetland
CN102923860A (en) * 2012-11-26 2013-02-13 中国农业大学 Method for enhanced nitrogen removal of tidal flow-horizontal subsurface flow hybrid constructed wetland and system thereof
CN104925951A (en) * 2015-05-26 2015-09-23 杭州科瑞特环境技术有限公司 Rotatable solar wetland sewage disposal system and method thereof
CN105906156A (en) * 2016-06-14 2016-08-31 上海秦森园林股份有限公司 Enhanced nitrogen and phosphorus removal combined type artificial subsurface-flow wetland treatment system
CN108726804A (en) * 2018-06-13 2018-11-02 沈阳建筑大学 A kind of intensified denitrification and dephosphorization artificial wet land system distributed rationally based on plant
CN109592791B (en) * 2019-02-21 2020-08-25 中国环境科学研究院 Composite artificial wetland system and operation method thereof

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