CN1528680A - Municipal sewage composite artificial wet land denitrifying and dephosphorizing method - Google Patents

Municipal sewage composite artificial wet land denitrifying and dephosphorizing method Download PDF

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CN1528680A
CN1528680A CNA200310111813XA CN200310111813A CN1528680A CN 1528680 A CN1528680 A CN 1528680A CN A200310111813X A CNA200310111813X A CN A200310111813XA CN 200310111813 A CN200310111813 A CN 200310111813A CN 1528680 A CN1528680 A CN 1528680A
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wetland
artificial wetland
horizontal flow
sewage
water
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CN100369832C (en
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崔理华
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South China Agricultural University
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Abstract

The invention is a city-sewage artificial wet-land denitrogenating and dephosphorizing method, using horizontal- and vertical- flow artificial wet lands in series to compose a compound artificial wet land, letting the sewage through the horizontal-flow one at first to eliminate most SS, COD, BOD5 and partial ammonia nitrogen, then distributing water to the vertical-flow one which adopts continuous working mode, so as to thoroughly eliminate oxygen consuming organic substance and thoroughly nitrify the rest of the ammonia nitrogen, and returning the nitrified leaving water of the vertical-flow one in the reflux ratio of 50%-100% to the horizontal-flow one for denitrifying denitrogenation. It fills Ca-rich marble or dolomite, and limestone in the horizontal-flow one, and blast furnace slag rich with Fe, Ca and Al oxides and so on, or artificial substrate mixed of the blast furnace slag, pulverin and soil. The hydrophytes planted in the horizontal-flow one are plantain and Scirpus tabernaemontani and the terraneous flowers planted in the vertical-flow one are canna and cyperus flower.

Description

Municipal effluent combined artificial wetland denitrification and dephosphorization method
Technical field
Patent of the present invention relates to sewage disposal technology.
Technical background
The municipal effluent artificial wet land treating method mainly contains two kinds of horizontal flow artificial wetland and vertical current constructed wetlands.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 and the Scirpus tabernaemontani 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.More than the vertical current constructed wetland bed height 100cm, usually adopt thinner matrix such as sand etc. as filtration media, sewage is obtaining handling in the downward vertical diafiltration process in top layer, and the plant great majority that it adopted are reed, cyperus alternifolius and Caulis Miscanthis floriduli etc.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.(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.(3) two kinds of artificial wet land systems of vertical current and horizontal flow to the removal ability of phosphorus in the municipal effluent all relatively poor (＜30-40%), and matrix such as sand of existing extensive employing, gravel is all shorter saturated work-ing life to the absorption of phosphorus, is generally 2～3 years; Even with horizontal flow artificial wetland and the vertical current constructed wetland composition composite system that is together in series, as still adopting sand, gravel matrix, its to the clearance of phosphorus still less than 60%.
Technology contents
The purpose of the invention is: 1. two kinds of artificial swamps are pressed horizontal flow and vertical current order and formed combined artificial wetland, make full use of the horizontal flow artificial wetland removal ability good to SS, alleviate in the waste water SS to the blockage problem of vertical current constructed wetland; Utilize horizontal flow artificial wetland to remove a part of COD, BOD simultaneously 5And ammonia nitrogen; 2. utilize vertical current constructed wetland to finish to the thorough removal of oxygen consumption organic and nitrated fully to municipal effluent; 3. the nitration treatment water outlet with vertical current constructed wetland is back to the horizontal flow artificial wetland head end by certain reflux ratio, under the anoxia condition of horizontal flow artificial wetland, utilize organism in the municipal effluent to finish the internal carbon source denitrification denitrogenation process of the nitrated water outlet that refluxes as carbon source; 4. in horizontal flow artificial wetland and vertical current constructed wetland, adopt high phosphorus adsorptive power matrix respectively, to reach purposes such as higher total tp removal rate and long matrix work-ing life.
Municipal effluent combined artificial wetland denitrification and dephosphorization method is: horizontal flow artificial wetland and vertical current constructed wetland are together in series, and horizontal flow artificial wetland is preceding, vertical current constructed wetland after.Municipal effluent at first after the bed body of horizontal flow artificial wetland is handled, is removed most of SS, COD, BOD 5With the part ammonia nitrogen; Then the hydrostaticpressure by water collecting basin is to the low slightly vertical current constructed wetland gravity flow water distribution of physical features, utilizes vertical current constructed wetland to finish the thorough removal of oxygen consumption organic and remaining ammonia nitrogen is nitrated fully; Then the treat effluent of vertical current constructed wetland is back to the head end of horizontal flow artificial wetland in 50%～100% ratio with fresh water pump, utilizes the anoxia condition of horizontal flow artificial wetland and sewage is finished the treat effluent of backflow as carbon source denitrification denitrogenation process.In horizontal flow artificial wetland and vertical current constructed wetland, fill the high phosphorus adsorbing base, ST Stuffing Table soil tectum on matrix, and on the tectum of horizontal flow artificial wetland planting aquatic plants, plantation Lu Sheng flowers on the tectum of vertical current constructed wetland.
Municipal effluent 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: in horizontal flow artificial wetland, fill matrix such as marble or rhombspar and the Wingdale etc. that phosphorus had more strong power surely, and planting aquatic plants such as Scirpus tabernaemontani and cyperus alternifolius, utilize matrix and waterplant to remove a part of phosphorus in the waste water; Secondly, in vertical current constructed wetland, fill phosphorus is had the matrix of very strong power surely such as blast furnace slag etc., and plantation Canna generalis Bailey and cyperus flower, utilize blast furnace slag matrix and Lu Sheng flowers to remove most of phosphorus in the waste water; Then, along with the backflow of treat effluent, make wherein remaining phosphorus again by horizontal flow artificial wetland and vertical current constructed wetland, utilize effects such as matrix, plant and microorganism further to remove again, go round and begin again, reach municipal sewage plant's first discharge standard until the sewage total phosphorous.
Now in conjunction with the accompanying drawings the present invention is explained:
Fig. 1 is a municipal effluent combined artificial wetland structure iron.
Fig. 2 is a municipal effluent combined artificial wetland horizontal flow artificial wetland structure iron.
Fig. 3 is a municipal effluent combined artificial wetland vertical current constructed wetland structure iron.
Among the figure: 1-grid, 2-pump well, 3-waste pipe, 4-gravel water distributing area, 5-marble or rhombspar matrix district, 6-gravel catchment area, 7-quartz sand tectum, 8- Water shoot, 9-water collecting basin, 10-water distribution are responsible for, 11-shows native tectum, 12-high phosphorus adsorbing base layer, 13-gravel blanket, 14-clean water basin, 15-clear water backflow submersible pump, 16-sewage water inlet pipe, 17-sewage drainage pipe, 18-water distribution branch pipe, 19-gravel water distribution layer, 20-water shoot.
The municipal sewage combined artificial wetland is comprised of horizontal flow artificial wetland, collecting-tank and vertical current constructed wetland, clear water reserviors, presses horizontal flow artificial wetland front, vertical current constructed wetland after the order composition combined artificial wetland that is together in series. In the bed body of horizontal flow artificial wetland, place the high phosphorus adsorbing bases such as lime stone, marble or dolomite, in the cover surface planting aquatic plants. In the bed body of vertical current constructed wetland, place high phosphorus adsorbing base blast furnace slag or blast furnace slag and farmland tillaging layer soil, peat composed of rotten mosses mixture, in cover layer plantation Lu Sheng flowers. Municipal sewage is removed most of SS, COD, BOD through the suction-operated of horizontal flow artificial wetland high phosphorus adsorbing base and picked-up effect and the effects such as the physics that is accompanied by, chemistry and microorganism of root system of plant5With the part ammonia nitrogen, sewage enters collecting-tank, utilizes the hydrostatic pressure of collecting-tank and drop to the vertical current constructed wetland water distribution that flows automatically. Sewage is in vertical current constructed wetland after the picked-up effect and the effects such as the physics that is accompanied by, chemistry and microorganism of undercurrent by the suction-operated of high phosphorus adsorbing base and root system of plant, finish the thorough removal of oxygen consumption organic and fully nitrated, sewage enters clear water reserviors and with clear water backflow immersible pump sewage is back to horizontal flow artificial wetland by 50～100% reflux ratios and carries out reprocessing, go round and begin again, until the sewage total phosphorus content reaches municipal sewage plant's first discharge standard.
The cellular constructions such as the horizontal flow artificial wetland in the municipal sewage combined artificial wetland, collecting-tank, vertical current constructed wetland and clear water reserviors are formed by connecting by pipeline.
Make with non-leakage material bed wall and the bottom of the horizontal flow artificial wetland bed body in the municipal sewage combined artificial wetland, and its wall is the brick structure of cement plaster if build on the ground, and the bottom is xoncrete structure.
The outlet of bed body from the import of sewage to sewage sets gradually gravel water distributing area 4, marble or dolomite matrix district 5, and gravel gathering ground 6, bed body top is provided with water inlet pipe, and establish the bottom
Figure A20031011181300071
The font drainpipe. Gravel water distributing area 4 and gravel gathering ground 6 respectively account for 1/4 of a body total length. Marble or dolomite matrix district 5 account for 1/2 of a body total length. Broken lime stone is filled in gravel water distributing area 4 and gravel gathering ground 6, and limestone particle size is 3～5cm. Broken marble or dolomite are filled by marble or dolomite matrix district 5, and marble or dolomite particle diameter are 6～8cm. The filler filling thickness in gravel water distributing area, gravel gathering ground and marble or dolomite matrix district is 85～90% of bed height, on filler, fill quartz sand as quartz sand cover layer 7, the quartz sand overburden cover is 10～15% of bed height, plants the plants such as reed, cattail, rush, Scirpus tabernaemontani, cyperus alternifolius, vetiver, canna at cover layer. Under the quartz sand cover layer, sewage water inlet pipe 16 is set, sewage water inlet pipe 16 is communicated with sewage pipe 3 with sewage pipe 3 and is provided with valve, has a plurality of apertures on the tube wall of sewage water inlet pipe 16. Build the collecting-tank 9 that links into an integrated entity with the bed body at delivery port one end of horizontal flow artificial wetland bed body, the treated sewage of bed body passes throughFont drainpipe 8 is discharged into collecting-tank 9,
Figure A20031011181300073
The water inlet of the discharge outlet of font drainpipe 8 and water inlet pipe 16 will have drop. Sewage is established in collecting-tank 9 bottoms drainpipe 17,
Figure A20031011181300074
Font drainpipe 8 and sewage drainage pipe 17 are provided with valve, with the control drainage speed.
The vertical fluidized bed of municipal 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 distributes from below to up: gravel blanket 13, high phosphorus adsorbing base layer 12, gravel water distribution layer 19, the native cover layer 11 of table. More than the bed height 120cm, gravel blanket 13 thickness 15～20cm, gravel, little gravel and peastone from bottom to top distribute; High phosphorus adsorbing base layer thickness is 80～100cm, and high phosphorus adsorbing base layer placement blast furnace slag or blast furnace slag and the peat composed of rotten mosses and farmland tillaging layer soil are by 13～18: the mixed fillers that 1: 1 volume ratio is mixed and forms. The blast furnace slag particle diameter is 0.25mm～5mm; Gravel water distribution layer 19 thickness are 5～10cm, and gravel and peastone from bottom to top distribute; Water distributor is distributed between the gravel and peastone of gravel water distribution layer; Showing native cover layer 11 thickness is 5～10cm. Place natural soils in the cover layer, and plant the flowers of anti-LDO such as rose, carnation, gladiolus, African Chrysanthemum, lily, cyperus flower, canna etc.
Water distributor is distributed between the gravel and peastone of gravel water distributing area, water distributor is made up of the water distribution person in charge 10 and many water distribution branch pipes 18, the water distribution person in charge 10 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 the water shoot 17 of horizontal fluidized bed, water distribution branch pipe 18 is fixedly connected on the both sides that water distribution is responsible for, the 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 20 on water port, is provided with valve on water shoot 20, with the drainage speed of control treat effluent.
Clean water basin 14 are sand drains of collecting the vertical current constructed 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; Clear water backflow submersible pump 15 is installed on clean water basin, is extracted at regular time and quantity by vertical current constructed wetland and handle the effusive water outlet in back to horizontal flow artificial wetland.In order to reduce the laid down cost for the treatment of pond, three vertical current constructed wetland parallel connections are connected in three horizontal flow artificial wetland parallel connections with a water collecting basin.Each horizontal flow artificial wetland all is equipped with the water shoot and the water collecting basin connection of valve, is provided with water shoot and three vertical current constructed wetlands connections at the bottom of the water collecting basin, and each vertical current constructed 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 municipal effluent at first removes in the decontaminated water through grid 1, sewage enters pump well 2, by fresh water pump pump well 2 sewage are extracted out, enter the gravel water distributing area 4 of the front end of horizontal flow artificial wetland along waste pipe 3, sewage water inlet pipe 16, and the gravel water distributing area 4 of the horizontal flow artificial wetland of flowing through, marble or rhombspar matrix district 5 and gravel catchment area 6.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, has avoided the obstruction of SS to vertical current constructed wetland.Sewage is through horizontal flow artificial wetland, utilizes the adsorption of high phosphorus adsorbing bases such as Wingdale, marble or rhombspar of horizontal flow artificial wetland and root system of plant picked-up effect to remove COD, BOD in the sewage 5With the part ammonia nitrogen.The sewage of horizontal flow artificial wetland enters water collecting basin 9 through water shoot 8, and water shoot 8 is
Figure A20031011181300091
Font is located at horizontal fluidized bed bottom,
Figure A20031011181300092
The water-in of the water outlet ratio sewage water inlet pipe 16 of font water shoot 8 has the 10cm drop, The font pipe is established valve, the velocity of discharge of control sewage and the moisture storage capacity of horizontal fluidized bed.The sewage of water collecting basin 9 utilizes the drop of horizontal flow artificial wetland and vertical current constructed wetland, process sewage drainage pipe 17 enters the water distribution person in charge 10 and water distribution branch pipe 18 enters vertical current constructed wetland, sewage is downward undercurrent in vertical current constructed wetland, through the native tectum 11 of table, gravel water distribution layer 19, high phosphorus adsorption layer 12, gravel blanket 13, sewage is through being finished the thorough removal of oxygen consumption organic and nitrated fully by the picked-up effect of the adsorption of matrix and root system of plant behind the vertical current constructed wetland, the sewage of vertical current constructed wetland utilizes vertical current constructed wetland bed body and clean water basin to have drop, sewage flows into clean water basin through water shoot 20, water shoot is provided with valve, the flow of control sewage and the moisture storage capacity of vertical current constructed wetland, sewage in the clean water basin, utilize clear water reflux pump 15 that sewage is drawn back gravel water distributing area 4 to the horizontal flow artificial wetland head end by the 50-100% reflux ratio, again sewage is handled, go round and begin again, the clearance of total phosphorus reaches more than 90～99% in sewage, the concentration of total phosphorus has reached municipal sewage plant's first discharge standard less than 0.5mg/L in the water outlet.
Innovation and creation have the following advantages:
1. compare with single horizontal flow artificial wetland or vertical current constructed wetland system, the invention is to SS, COD and BOD in the municipal effluent 5Removal effect and treat effluent water quality all be better than single horizontal flow or vertical current constructed wetland; Shortcoming such as aerobic processing power deficiency when having solved vertical current constructed wetland simultaneously easily by the blockage problem of SS in the municipal effluent and horizontal flow artificial wetland Treating Municipal Sewage.
2. the invention utilizes horizontal flow artificial wetland to remove most of SS, a part of COD, BOD 5Nitrated with the ammonification and the part of waste water, utilize vertical current constructed wetland to finish COD and BOD 5Major part remove the part removal function of the complete nitrated and SS of function and waste water; The nitrated water part of vertical current constructed wetland is back to the horizontal flow artificial wetland head end, under the anaerobic environment condition of horizontal flow artificial wetland, utilize the tired organic matter of sewage and bed volume to finish the internal carbon source denitrification denitrogenation effect of nitrated recirculation water, increased horizontal flow artificial wetland simultaneously BOD as carbon source 5Removal ability with COD.Thereby can make combined artificial wetland to COD, BOD in the general municipal effluent 5, KN and TN clearance reach 80-90%, 85-95%, 60-90% respectively and more than the 30-60%, COD, BOD in the treat effluent 5With the concentration of SS respectively less than 60,20 and 20mg/L, reach municipal sewage plant's emission standard basically.
3. utilize in the horizontal flow artificial wetland matrix such as marble or rhombspar and Wingdale to the phosphorus fixation effect, finish the part of phosphorus in the waste water is removed function; The blast furnace slag matrix of utilizing vertical current constructed wetland to fill is finished the removal function of most of phosphorus in the waste water.Utilize the picked-up effect of the waterplant planted in horizontal flow and the vertical current constructed wetland and Lu Sheng flower root system to remove part phosphorus simultaneously, thereby combined artificial wetland is reached more than 90～99% to the clearance of total phosphorus in the septic tank effluent, the concentration of total phosphorus is less than 0.5mg/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.
Embodiment:
The day designing treatment water yield 0.5～2.5m 3/ d.
Design variable:
Grid: adopt 2cm * 2cm wire netting, stand in the inspection chamber that septic tank effluent mouth and underground aqueduct join.
Pump well: size is 2.0m * 1.8m * 2.0m, available depth 1.0m, useful volume 3.6m 3, the brick structure finishing cement.
Horizontal flow artificial wetland: the design internal diameter size is long * wide be one of the rectangle form pool of 3.0m * 3.45m * 0.8m, branch two portions.A preceding part is horizontal fluidized bed, and a back part is horizontal fluidized bed water outlet water collecting basin.Horizontal fluidized bed is divided into three pond parallel runnings again, the size of single pond practicality is long * wide be 2m * 1m.The practical dimensions of water collecting basin is long * wide be 0.46m * 3.09m.Horizontal fluidized bed divides gravel water distributing area, matrix district and gravel catchment area, respectively accounts for 1/4,1/2,1/4 of a body length, and what fill respectively is Wingdale, marble, Wingdale.Cover the quartz sand of a bed thickness 10cm on it.Water collecting basin is collected after three horizontal fluidized bed treat effluent mix, by pipeline, valve by hydrostaticpressure to three vertical fluidized beds gravity flow water distributions.
Vertical current constructed wetland design outside dimension length * wide * height is 1.42m * 3.45m * 1.2m, divides three lattice, single pond practical dimensions length * wide 1.0m * 1.0m * 1.2m.Actual usable floor area is 3.0m altogether 2Vertical current mattress layer is made up of gravel, little gravel and peastone, thick 10cm; Blast furnace slag matrix bed thickness 90～100cm; Water distribution layer is made up of gravel and peastone, thick 5～10cm; Show native tectum and form, thick 5～10cm by natural soils.
Working time and operation scheme: since in June, 2003 trial run, the HTR of employing is 5,4,3 and 2 days.On 3 horizontal fluidized beds, the 1st (HF1) plants cyperus alternifolius, and the 2nd (HF2) plants Scirpus tabernaemontani, the 3rd (HF3) contrast for not planting.On 3 vertical fluidized beds, the 1st (VF1) plantation cyperus flower, the 2nd (VF2) plants Canna generalis Bailey, the 3rd (VF3) contrast for not planting.
Treatment effect (mg/L, %): shown in table 1, table 2, table 3 and table 4.
Table 1 is a municipal effluent after the combined artificial wetland denitrogenation dephosphorizing is handled, the COD change in concentration situation in the sewage;
Table 2 is a municipal effluent after the 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 KN change in concentration situation in the sewage;
Table 4 is a municipal effluent after the combined artificial wetland denitrogenation dephosphorizing is handled, the TN change in concentration situation in the sewage;
Table 5 is a municipal effluent after the combined artificial wetland denitrogenation dephosphorizing is handled, the TP change in concentration situation in the sewage;
Before the backflow Date Hydraulic detention time Sewage ?HF1 ?HF2 ?HF3 ?VF1 ?VF2 ?VF3
?7/4/03 5 days Concentration (mg/L) 120.19 ?15.02 ?22.54 ?30.05 ?7.51 ?15.02 ?15.02
Clearance (%) ?87.50 ?81.25 ?75.00 ?93.75 ?87.50 ?87.50
?7/9/03 5 days Concentration (mg/L) 477.61 ?63.68 ?22.88 ?95.52 ?15.92 ?15.92 ?23.88
Clearance (%) ?86.67 ?95.00 ?80.00 ?96.67 ?96.67 ?95.00
?7/14/03 5 days Concentration (mg/L) 126.55 ?63.28 ?45.20 ?81.36 ?18.08 ?9.04 ?27.12
Clearance (%) ?50.00 ?64.29 ?35.71 ?85.71 ?92.86 ?78.57
?7/19/03 5 days Concentration (mg/L) 192.35 ?69.95 ?61.20 ?52.46 ?34.97 ?26.23 ?43.72
Clearance (%) ?63.64 ?68.18 ?72.73 ?81.82 ?86.36 ?77.27
?7/29/03 5 days Concentration (mg/L) 163.83 ?62.75 ?66.23 ?101.09 ?17.43 ?15.69 ?20.92
Clearance (%) ?62.5 ?60.42 ?39.58 ?89.58 ?90.63 ?87.5
?8/17/03 3 days Concentration (mg/L) 138.10 ?63.49 ?52.38 ?52.38 ?38.10 ?23.81 ?42.54
Clearance (%) ?54.02 ?62.07 ?62.07 ?72.41 ?82.76 ?69.20
?8/25/03 1 day Concentration (mg/L) 127.78 ?50.00 ?72.22 ?47.22 ?36.11 ?44.44 ?55.56
Clearance (%) ?60.87 ?43.48 ?63.04 ?71.74 ?65.22 ?56.52
After the backflow ?8/3/03 5 days 100% Concentration (mg/L) 167.52 ?27.35 ?30.77 ?44.44 ?20.51 ?23.93 ?37.61
Clearance (%) ?83.33 ?81.25 ?72.92 ?87.5 ?85.42 ?77.08
?8/8/03 5 days 50% Concentration (mg/L) 141.56 ?29.63 ?32.92 ?49.38 ?42.80 ?29.63 ?29.63
Clearance (%) ?79.07 ?76.74 ?65.12 ?69.77 ?79.07 ?79.07
?8/23/03 3 days 50% Concentration (mg/L) 126.25 ?14.77 ?16.27 ?34.35 ?17.78 ?23.80 ?29.83
Clearance (%) ?88.31 ?87.11 ?72.79 ?85.92 ?81.15 ?76.37
?8/20/03 3 days 100% Concentration (mg/L) 98.41 ?30.16 ?34.47 ?30.23 ?39.05 ?31.85 ?13.65
Clearance (%) ?69.36 ?64.98 ?69.29 ?60.32 ?67.64 ?86.13
?8/26/03 1 day 50% Concentration (mg/L) 129.60 ?67.25 ?72.40 ?75.49 ?51.02 ?41.48 ?40.19
Clearance (%) ?48.11 ?44.14 ?41.75 ?60.64 ?67.99 ?68.99
?8/27/03 1 day 100% Concentration (mg/L) 111.11 ?55.56 ?41.67 ?58.33 ?36.11 ?27.78 ?44.44
Clearance (%) ?50.0 ?62.50 ?47.50 ?67.50 ?75.00 ?60.00
Table 1
Before the backflow Date Hydraulic detention time Sewage ??HF1 ??HF2 ??HF3 ??VF1 ??VF2 ??VF3
??7/4/03 5 days Concentration (mg/L) ??74.48 ??9.21 ??12.58 ??16.88 ??9.44 ??8.13 ??5.86
Clearance (%) ??87.63 ??83.11 ??77.34 ??87.33 ??89.09 ??92.14
??7/9/03 5 days Concentration (mg/L) ??113.60 ??12.18 ??17.99 ??15.33 ??1.35 ??3.00 ??1.08
Clearance (%) ??89.27 ??84.15 ??86.50 ??98.81 ??97.36 ??99.05
??7/14/03 5 days Concentration (mg/L) ??40.92 ??13.87 ??11.56 ??18.81 ??2.41 ??2.11 ??6.96
Clearance (%) ??66.11 ??71.74 ??54.04 ??94.11 ??94.85 ??83.00
??7/19/03 5 days Concentration (mg/L) ??167.53 ??43.28 ??41.86 ??46.51 ??22.73 ??13.15 ??29.90
Clearance (%) ??74.17 ??75.02 ??72.24 ??86.43 ??92.15 ??82.15
??7/29/03 5 days Concentration (mg/L) ??64.12 ??18.48 ??19.45 ??17.41 ??1.10 ??1.05 ??1.17
Clearance (%) ??71.18 ??69.66 ??72.85 ??98.29 ??98.37 ??98.17
??8/17/03 3 days Concentration (mg/L) ??65.39 ??22.54 ??23.72 ??23.29 ??10.00 ??6.17 ??6.56
Clearance (%) ??65.53 ??63.74 ??64.39 ??84.72 ??90.57 ??89.97
??8/25/03 1 day Concentration (mg/L) ??55.19 ??42.80 ??32.88 ??31.36 ??37.15 ??26.16 ??38.85
Clearance (%) ??22.45 ??40.43 ??43.18 ??32.70 ??52.61 ??29.61
After the backflow ??8/3/03 5 days 100% Concentration (mg/L) ??60.07 ??13.07 ??13.64 ??19.01 ??9.32 ??6.66 ??15.57
Clearance (%) ??78.24 ??77.29 ??68.35 ??84.49 ??88.92 ??74.09
??8/8/03 5 days 50% Concentration (mg/L) ??65.67 ??7.01 ??3.65 ??6.00 ??2.65 ??1.78 ??18.41
Clearance (%) ??89.33 ??94.44 ??90.86 ??95.97 ??97.30 ??71.96
??8/23/03 3 days 50% Concentration (mg/L) ??57.81 ??9.00 ??10.65 ??13.12 ??6.12 ??4.88 ??13.12
Clearance (%) ??84.44 ??81.59 ??77.31 ??89.41 ??91.56 ??77.31
??8/20/03 3 days 100% Concentration (mg/L) ??89.26 ??10.57 ??20.72 ??11.19 ??34.11 ??74.59 ??13.34
Clearance (%) ??88.16 ??76.79 ??87.47 ??61.79 ??99.16 ??85.05
??8/26/03 1 day 50% Concentration (mg/L) ??92.82 ??37.79 ??33.31 ??36.78 ??47.18 ??41.01 ??51.12
Clearance (%) ??59.28 ??64.11 ??60.37 ??49.17 ??55.82 ??44.93
??8/27/03 1 day 100% Concentration (mg/L) ??147.22 ??31.34 ??26.04 ??34.82 ??41.20 ??22.02 ??25.91
Clearance (%) ??78.71 ??82.31 ??76.35 ??72.01 ??85.04 ??82.40
Table 2
Before the backflow Date Hydraulic detention time Sewage ??HF1 ??HF2 ??HF3 ??VF1 ??VF2 ??VF3
?7/4/03 5 days Concentration (mg/L) ??39.11 ??26.07 ??24.77 ??24.28 ??0.49 ??0.82 ??3.10
Clearance (%) ??33.33 ??36.67 ??37.92 ??98.75 ??97.92 ??92.08
??7/9/03 5 days Concentration (mg/L) ??49.87 ??30.64 ??30.47 ??28.19 ??5.54 ??19.56 ??5.05
Clearance (%) ??38.56 ??38.89 ??43.46 ??88.89 ??60.78 ??89.87
??7/14/03 5 days Concentration (mg/L) ??47.58 ??29.01 ??30.64 ??32.59 ??18.09 ??1.96 ??48.89
Clearance (%) ??39.04 ??35.62 ??31.51 ??61.99 ??95.89 ??98.97
??7/19/03 5 days Concentration (mg/L) ??80.67 ??45.63 ??49.06 ??59.16 ??11.41 ??4.89 ??24.12
Clearance (%) ??43.43 ??39.19 ??26.67 ??85.86 ??93.94 ??70.10
??7/29/03 5 days Concentration (mg/L) ??42.53 ??42.04 ??41.72 ??41.07 ??4.56 ??5.70 ??0.82
Clearance (%) ??1.15 ??1.92 ??3.45 ??89.27 ??86.59 ??98.08
??8/17/03 3 days Concentration (mg/L) ??42.37 ??35.85 ??32.10 ??34.55 ??4.07 ??21.19 ??21.02
Clearance (%) ??15.39 ??24.23 ??18.46 ??90.39 ??50.00 ??50.39
??8/25/03 1 day Concentration (mg/L) ??47.10 ??32.27 ??34.06 ??41.39 ??1.47 ??17.11 ??5.22
Clearance (%) ??31.49 ??27.68 ??12.11 ??96.89 ??63.67 ??88.93
After the backflow ??8/3/03 5 days 100% Concentration (mg/L) ??51.01 ??38.46 ??38.62 ??39.27 ??26.24 ??24.28 ??2.77
Clearance (%) ??24.60 ??24.28 ??23.00 ??48.56 ??52.40 ??94.57
?8/8/03 5 days 50% Concentration (mg/L) ??56.38 ??39.11 ??35.69 ??39.44 ??17.60 ??22.65 ??0.00
Clearance (%) ??30.64 ??36.71 ??30.06 ??68.79 ??59.83 ??100.0
?8/23/03 3 days 50% Concentration (mg/L) ??51.50 ??23.30 ??23.30 ??29.66 ??8.47 ??20.04 ??5.05
Clearance (%) ??54.75 ??54.75 ??42.41 ??83.54 ??61.08 ??90.19
?8/20/03 3 days 100% Concentration (mg/L) ??44.16 ??24.61 ??22.81 ??36.18 ??12.06 ??5.05 ??23.14
Clearance (%) ??44.28 ??48.34 ??18.08 ??72.69 ??88.56 ??47.60
?8/26/03 1 day 50% Concentration (mg/L) ??41.88 ??36.99 ??39.60 ??38.95 ??7.33 ??21.19 ??6.36
Clearance (%) ??11.67 ??5.45 ??7.00 ??82.49 ??49.42 ??84.83
?8/27/03 1 day 100% Concentration (mg/L) ??35.53 ??32.59 ??31.946 ??30.31 ??22.33 ??18.90 ??16.13
Clearance (%) ??8.26 ??10.09 ??14.68 ??37.16 ??46.79 ??54.59
Table 3
Before the backflow Date Hydraulic detention time Sewage ??HF1 ??HF2 ??HF3 ??VF1 ??VF2 ??VF3
??7/4/03 5 days Concentration (mg/L) 76.45 ??48.48 ??47.71 ??48.92 ??40.77 ??29.43 ??49.58
Clearance (%) ??36.59 ??37.59 ??36.01 ??46.67 ??61.50 ??35.15
??7/9/03 5 days Concentration (mg/L) 103.4 ??71.37 ??67.06 ??64.97 ??41.46 ??34.17 ??38.92
Clearance (%) ??30.98 ??35.15 ??37.17 ??59.90 ??66.95 ??62.36
??7/14/03 5 days Concentration (mg/L) 91.05 ??80.63 ??81.97 ??66.28 ??61.85 ??69.90 ??88.37
Clearance (%) ??11.44 ??9.97 ??27.21 ??32.07 ??23.23 ??2.94
??7/19/03 5 days Concentration (mg/L) 133.7 ??109.60 ??133.10 ??87.47 ??76.46 ??82.80 ??90.47
Clearance (%) ??18.03 ??0.45 ??34.58 ??42.81 ??38.07 ??32.33
??7/24/03 5 days Concentration (mg/L) 137.4 ??96.45 ??97.64 ??96.45 ??95.03 ??100.47 ??-
Clearance (%) ??29.82 ??28.95 ??29.82 ??30.85 ??26.89 ??-
??8/17/03 3 days Concentration (mg/L) 84.30 ??79.65 ??73.73 ??72.57 ??63.06 ??53.22 ??63.37
Clearance (%) ??5.52 ??12.54 ??13.92 ??25.20 ??36.86 ??24.83
??8/25/03 1 day Concentration (mg/L) 97.76 ??67.68 ??72.47 ??67.05 ??82.35 ??52.59 ??43.99
Clearance (%) ??30.76 ??25.87 ??31.42 ??15.76 ??46.20 ??55.01
After the backflow ??8/3/03 5 days 100% Concentration (mg/L) 95.86 ??76.04 ??76.91 ??84.25 ??73.19 ??58.18 ??53.47
Clearance (%) ??20.68 ??19.77 ??12.11 ??23.65 ??39.31 ??44.22
??8/8/03 5 days 50% Concentration (mg/L) 104.0 ??75.18 ??77.67 ??77.12 ??72.8 ??65.02 ??73.02
Clearance (%) ??27.74 ??25.35 ??25.87 ??30.03 ??37.51 ??29.82
??8/23/03 3 days 50% Concentration (mg/L) 93.99 ??52.55 ??52.55 ??59.85 ??54.21 ??48.24 ??34.32
Clearance (%) ??44.09 ??44.09 ??36.33 ??42.32 ??48.67 ??63.49
??8/20/03 3 days 100% Concentration (mg/L) 72.94 ??65.75 ??58.44 ??57.39 ??51.25 ??55.38 ??60.67
Clearance (%) ??9.86 ??19.87 ??21.32 ??29.74 ??24.08 ??16.83
??8/26/03 1 day 50% Concentration (mg/L) 84.79 ??74.40 ??78.04 ??76.44 ??59.95 ??56.09 ??61.02
Clearance (%) ??12.25 ??7.96 ??9.85 ??29.30 ??33.84 ??28.03
??8/27/03 1 day 100% Concentration (mg/L) 72.69 ??68.62 ??69.15 ??63.59 ??71.19 ??67.55 ??66.69
Clearance (%) ??5.59 ??4.85 ??12.50 ??2.06 ??7.06 ??8.24
Table 4
Before the backflow Date Hydraulic detention time Sewage ??HF1 ??HF2 ??HF3 ??VF1 ??VF2 ??VF3
??7/4/03 5 days Concentration (mg/L) ??8.63 ??3.40 ??3.61 ??3.88 ??0.21 ??0.07 ??0.15
Clearance (%) ??- ??60.60 ??58.17 ??55.04 ??97.57 ??99.19 ??98.26
??7/9/03 5 days
Clearance (%) ??50.52 ??55.57 ??58.00 ??92.42 ??95.42 ??96.17
??7/14/03 5 days Concentration (mg/L) ??8.35 ??5.99 ??6.01 ??4.58 ??0.77 ??0.44 ??0.14
Clearance (%) ??28.26 ??28.02 ??45.15 ??90.78 ??94.73 ??98.32
??7/19/03 5 days Concentration (mg/L) ??12.84 ??8.17 ??7.76 ??8.86 ??0.38 ??0.28 ??0.35
Clearance (%) ??36.37 ??39.56 ??31.00 ??97.04 ??97.82 ??97.27
??7/29/03 5 days Concentration (mg/L) ??7.60 ??7.25 ??6.87 ??7.15 ??0.27 ??0.49 ??0.36
Clearance (%) ??4.61 ??9.60 ??5.92 ??96.45 ??93.55 ??95.26
??8/17/03 3 days Concentration (mg/L) ??5.74 ??5.01 ??4.68 ??4.81 ??0.10 ??0.11 ??0.24
Clearance (%) ??12.69 ??18.47 ??16.20 ??98.28 ??98.17 ??95.75
??8/25/03 1 day Concentration (mg/L) ??7.18 ??6.98 ??5.52 ??3.98 ??0.23 ??0.63 ??0.24
Clearance (%) ??2.79 ??23.12 ??44.57 ??96.80 ??91.23 ??96.66
After the backflow ??8/3/03 5 days 100% Concentration (mg/L) ??14.57 ??7.01 ??6.43 ??6.83 ??0.30 ??0.26 ??0.23
Clearance (%) ??51.89 ??55.85 ??53.13 ??97.97 ??98.19 ??98.42
??8/8/03 5 days 50% Concentration (mg/L) ??10.55 ??4.90 ??5.26 ??6.21 ??0.96 ??0.073 ??0.163
Clearance (%) ??53.58 ??50.14 ??41.15 ??90.88 ??99.31 ??98.46
??8/23/03 3 days 50% Concentration (mg/L) ??12.59 ??1.51 ??1.54 ??3.27 ??0.099 ??0.058 ??0.098
Clearance (%) ??88.01 ??87.77 ??74.03 ??99.21 ??99.54 ??99.22
??8/20/03 3 days 100% Concentration (mg/L) ??5.65 ??2.28 ??1.75 ??1.50 ??0.27 ??0.13 ??0.56
Clearance (%) ??59.65 ??69.03 ??73.45 ??95.22 ??97.70 ??90.09
??8/26/03 1 day 50% Concentration (mg/L) ??9.43 ??8.63 ??6.20 ??7.41 ??0.21 ??0.66 ??0.20
Clearance (%) ??8.48 ??34.25 ??21.42 ??97.78 ??93.00 ??97.88
??8/27/03 1 day 100% Concentration (mg/L) ??8.09 ??3.95 ??5.30 ??4.71 ??0.01 ??0.12 ??0.17
Clearance (%) ??51.15 ??34.5 ??41.84 ??98.83 ??98.48 ??97.94
Table 5

Claims (3)

1, municipal effluent combined artificial wetland denitrification and dephosphorization method, it is characterized in that by horizontal flow artificial wetland preceding, vertical current constructed wetland after the order composition combined artificial wetland that is together in series, municipal effluent 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 horizontal flow artificial wetland 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, plantation Lu Sheng flowers on substrate of vertical-flow constructed wetlands.
2, method according to the said dephosphorization of claim 1, it is characterized in that the high phosphorus adsorbing base has two kinds: first kind is the high phosphorus adsorbing base of horizontal flow artificial wetland, it adopts marble or rhombspar and Wingdale is that material fragmentation forms, three's segmentation is filled, the front end of sewage water inlet and the rear end filled stone lime stone of water outlet, respectively account for 1/4 of a body total length, fill marble or rhombspar in the middle of the bed body, account for a body total length 1/2, second kind is substrate of vertical-flow constructed wetlands, its adopts blast furnace slag is that raw material is directly filled and formed, or with the peat composed of rotten mosses and topsoil soils by 13～18: 1: 1 volume ratio mixed preparing forms.
3,, it is characterized in that the waterplant kind of planting is cyperus alternifolius and Scirpus tabernaemontani on horizontal flow artificial wetland according to the said denitrification and dephosphorization method of claim 1; The Lu Sheng flower variety of planting on vertical current constructed wetland is Canna generalis Bailey and cyperus flower.
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