CN109437410A - A kind of method of coupled biological filter device and advanced treatment of ammonia nitrogen and estrogen - Google Patents
A kind of method of coupled biological filter device and advanced treatment of ammonia nitrogen and estrogen Download PDFInfo
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- CN109437410A CN109437410A CN201811417187.XA CN201811417187A CN109437410A CN 109437410 A CN109437410 A CN 109437410A CN 201811417187 A CN201811417187 A CN 201811417187A CN 109437410 A CN109437410 A CN 109437410A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/107—Inorganic materials, e.g. sand, silicates
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2826—Anaerobic digestion processes using anaerobic filters
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C02F2101/00—Nature of the contaminant
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The invention discloses a kind of methods of coupled biological filter device and advanced treatment of ammonia nitrogen and estrogen, the coupled biological filter device includes a shell, the inside of shell is separated by steel plate, forms the first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank；The bottom of first reaction tank is equipped with water inlet, upper part is connected to second reaction tank, the lower part of second reaction tank is connected to the third reaction tank, and the top of the third reaction tank is connected to the 4th reaction tank, is equipped with discharge outlet in the lower part of the 4th reaction tank.The present invention can remove estrogen and nitrogen in sewage simultaneously, and the effective protection ecological environment of receiving water body, the device is simple, rationally distributed, low in cost, promote convenient for being widely used.
Description
Technical field
The present invention relates to technical field of sewage more particularly to a kind of coupled biological filter devices and advanced treatment of ammonia nitrogen
With the method for estrogen.
Background technique
Combined drainage system is to discharge sanitary sewage, industrial wastewater and rainwater by same pipe duct.Beijing in 2016
City's water utilities findings of the survey display centre Combined Municipal pipe network accounts for 10%, and the Combined Municipal pipe network in Shenyang accounts for 25%, Chongqing City
City Yu Zhong district Niujiaotuo, big gully, the hole Hong Ya, the ground such as storage magic skill or being invisible are all combined system pipe networks.In storm period or snow melt phase, due to
A large amount of rainwater or melt snow water flow into drainage system, and it is more than draining that the flow in combined drainage system, which is more than when cutting dirty flow,
The rain dirt combined sewage of system loading will be directly discharged into receiving water body, this is referred to as combined system tube overflow (Combined
Sewer Overflows, CSOs).
Estrogen is derived from oestrone (estrone, E1), 17 beta estradiols of the endocrine of the mankind and biology
(17 β-estradiol, E2), estriol (estriol, E3) and derive from contraceptive and some other treatment endocrine system medicines
17 α-the ethinyl estradiol (17 α-ethinylestradiol, EE2) of object, is the most common estrogen compound in environment.
The rank for reaching ng/L in sewage will lead to aquatile and feminize and endocrine system disorder.The conjunction of Burlinton in the U.S.
The concentration that E1, E2, E3 are detected in stream tubulation net is respectively 48ng/L, 7ng/L, 120ng/L, the German interflow Eriskirch
The concentration of E1, E3 are respectively 22 ± 19ng/L, 25 ± 17ng/L in tubulation net overflow port.These contain the conjunction of high concentration estrogen
Tubulation net overflow sewage is flowed, if without processing direct emission, it will lead to ecological risk in river water environment and to water
The increase of the endocrine disruption risk of biology, can not only seriously affect the growth and breeding of aquatile, cause water eutrophication
Change, can also have an adverse effect to the health of city dweller, restrict the sustainable development in city.
Polluted by nitrogen is also one of the main reason for causing water quality deterioration and water eutrophication.In China's combined system pipe network
In overflow port water outlet, the concentration of ammonia nitrogen and total nitrogen fluctuates between 1.88-19.86mg/L, 5.11-30.1mg/L respectively, greatly
Part does not reach the standard regulation of level-one B specified in China " integrated wastewater discharge standard GB8978-2015 ".These water row
Receiving water body will be increased into storage water body and receive dirty pressure, be unfavorable for the construction in conservation culture city.
Even if also containing certain density estrogen in the sewage that discharge is collected and handled through sewage plant through pipe network.Investigation
Show E1 in the sewage effluents of Chongqing, E2, EE2 concentration is respectively 18.6ng/L, 8.5ng/L, 1.0ng/L, and Harbin is dirty
The E1 of water factory, E2, EE2 aqueous concentration are respectively 42 ± 14ng/L, 19 ± 6ng/L, 29 ± 8ng/L.
In order to reduce estrogen in sewage effluents and combined system pipe network overflow sewage and nitrogen to receiving water body ring
The ecological risk in border carries out advanced treating to these sewage before being discharged into receiving water body, reduces estrogen and nitrogen in sewage
Constituent content is very necessary.In sewage disposal process, the processing and removal of nitrogen and estrogen are carried out separately, this
Sample is not only handled at high cost, but also complicated for operation, is unfavorable for the practical application of engineering.
Therefore, how to solve the above problems is the direction of those skilled in the art's research.
Summary of the invention
In view of the above shortcomings of the prior art, it is an object of the invention to solve sewage effluents or combined system pipe network
The estrogen and nitrogen content that contain in overflow sewage are high, ecology to receiving water body and interfere to the endocrine of aquatile
The problem of, a kind of coupled biological filter device is provided, estrogen and nitrogen in sewage, effective protection can be removed simultaneously
The ecological environment of receiving water body, the device is simple, rationally distributed, low in cost, promotes convenient for being widely used.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that it is such:
A kind of coupled biological filter device, including a shell, the inside of shell are separated by steel plate, form mutually independent first
Reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank；Wherein, second reaction tank, third reaction tank and the 4th
Reaction tank is located at the same side of the first reaction tank；The bottom of first reaction tank is equipped with water inlet, upper part and described second
The top of reaction tank is connected to, and the lower part of second reaction tank is connected to the lower part of the third reaction tank, the third reaction tank
Top is connected to the top of the 4th reaction tank, is equipped with discharge outlet in the lower part of the 4th reaction tank；In first reaction tank
Portion is nitrifying granular activated equipped with embedding, and the first reaction tank is made to form internal circulating fluidized bed；In second reaction tank and third reaction tank
Interior to be equipped with denitrification filtrate, making the second reaction tank and third reaction tank is denitrification filter pool；It is set in the 4th reaction tank
There is quartz sand, so that the 4th reaction tank is quartzy sand filter.
The first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank being connected to by setting S-shaped, in this way, dirty
Water is entered from the inlet in the first reaction tank by pipeline, by the first reaction tank, the second reaction tank, third reaction tank and the 4th
It after reaction tank reaction and filtering, is discharged from discharge outlet, whole device integration, convenient for the concentration of estrogen in sewage and nitrogen
Processing.Sewage enters from the bottom of the first reaction tank, reserves after reacting from bottom to top from upper part, enables sewage and first anti-
The embedding placed in Ying Chi is nitrifying granular activated to be come into full contact with and reacts, and estrogen and ammonia nitrogen are removed；It is anti-in the second reaction tank and third
It is equipped with denitrification filtrate in Ying Chi, quartz sand layer is placed in the 4th reaction tank, in this way, sufficiently reacting in the first reaction tank
Sewage afterwards can carry out anti-nitration reaction in the second reaction tank and third reaction tank, and further filtered and absorbed,
So that the nitrogen and estrogen in sewage remove more thorough, it can be realized and convert nitrogen for nitrogen and completely remove.Place
Sewage after reason is further filtered by quartz sand layer, so that water outlet is cleaner.Whole device is simple, rationally distributed, cost
It is cheap, it is promoted convenient for being widely used.
Further, it mainly includes polyurethane, activated sludge, bisacrylamide crosslinker and peace that the embedding is nitrifying granular activated
Cease fragrant dimethyl ether, wherein polyurethane, activated sludge, bisacrylamide crosslinker and dimethoxybenzoin are 10- by weight
18:3-8:0.5-1:0.05-0.1 is added water 14.1-20.55 parts, is uniformly mixed；It is placed under ultraviolet source and irradiates 3-4 minutes again
It cuts afterwards, wash and obtain.It is using polyurethane hydrogel as carrier, by nitrifier and a small amount of active carbon due to embedding nitrifying granular activated
Grain is embedded in porous carrier inside, and it is porous that small molecule substrates and metabolite can freely enter and leave these, and nitrobacteria is certainly
Body is immovable, and therefore, the embedding is nitrifying granular activated with adsorption capacity is strong, treatment effeciency is high, biological content is high, strain purity
The advantages that high.Drainage flow comes into full contact with small molecule substrates and metabolite in sewage with nitrobacteria, will be in sewage
Organic nitrogen and mineralized nitrogen be nitrate nitrogen and and cultured water, while the Co metabolism that the estrogen in sewage passes through nitrobacteria
The physisorption of effect and embedded particles is removed.
Further, aerator is provided in the first reaction tank；The aerator include air compressor and with
The connected aeration tube of the air compressor, the aeration tube have several aeration heads, which is placed in first reaction tank
Bottom.In this way, being controlled the dissolved oxygen in the first reaction tank in suitable concentration by control aerator, makes to be located at and be somebody's turn to do
The nitrifying granular activated interior nitrobacteria of embedding in first reaction tank is in active state, to improve the nitrification energy of nitrobacteria
Power.
Further, the denitrification filtrate is zeolite layer, the zeolite using the activated sludge in sewage plant aerobic tank into
The processing of row biofilm.The microorganism hung in the activated sludge on zeolite can be by the nitre in the sewage after the reaction of the first reaction tank
Hydrochlorate nitrogen and cultured water are reduced to nitrogen and are discharged into air completely remove；The estrogen that part is not decomposed and adsorbs is lived
Property sludge in microorganism utilize, and by the zeolite layer Adsorption of more micro-pores.
Further, it is equipped in the bottom of the second reaction tank, third reaction tank and the 4th reaction tank as supporting layer
Pebble layer.Pebble layer plays the role of support and filtering, and design is reasonable.
It further, further include the back purge system being arranged in the second reaction tank, third reaction tank and the 4th reaction tank；
The back purge system includes two backwashing pumps, is connected respectively by Backwash pipeline and the second reaction tank and the 4th reaction tank
It is logical.Back purge system is set, the second reaction tank, third reaction tank and the 4th reaction tank can be backwashed, keeps it anti-
Answer vigor, it is ensured that wastewater treatment efficiency is consistent, is conducive to the long-time service of the device.
Further, second reaction tank and backwash in third reaction tank every 7 days are primary；4th reaction tank is daily
Backwash is primary.In such manner, it is possible to which the clean-up capability of whole device is kept to keep best.
Further, effluent weir, the effluent weir are equipped in the top of the second reaction tank, third reaction tank and the 4th reaction tank
It is connected to simultaneously with the second reaction tank, third reaction tank and the 4th reaction tank, effluent weir is set, after backwash can be discharged in time
Water, the second reaction tank, third reaction tank and the 4th reaction tank are clean after rinsing, and restore sewage treatment capacity.
The present invention also provides a kind of methods of advanced treatment of ammonia nitrogen and estrogen, filter dress including the coupled biological
It sets, further comprising the steps of:
S1: sewage being sent into and is placed with the first nitrifying granular activated reaction bottom of pond portion of embedding, and sewage is bottom-up in the first reaction tank
Interior flowing reactive, dwell time of sewage 1-2h；
S2: sewage flows into the second reaction tank being connected to the first reaction tank from the top of the first reaction tank, enters back into and second
In the third reaction tank of reaction tank connection, denitrification processing is carried out；Sewage is controlled in the second reaction tank and third reaction tank
Flow control is 0.5-1m/h, residence time 1-2h；
S3: sewage flows into the 4th reaction tank from the top of third reaction tank, after filtering from the bottom discharge of the 4th reaction tank
Mouth discharge.
Further, the nitrifying granular activated dosage in the first reaction bottom of pond portion of the embedding is the 10% of the first reaction pool volume,
Dissolved oxygen in first reaction tank is 4-5mg/L.
Control parameter is few in the method for the advanced treatment of ammonia nitrogen and estrogen, easy to operate, by above-mentioned a series of anti-
It should and filter, the estrogen and nitrogen in sewage can be effectively removed simultaneously, reduce estrogen and nitrogen to storage water body
Destruction, water outlet TN index is all satisfied in " urban wastewater treatment firm pollutant emission standard (GB18918-2002) " level-one A and marks.
Compared with prior art, the present invention has the advantage that
1, the first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank being connected to by setting S-shaped, in this way, sewage
It is entered from the inlet in the first reaction tank by pipeline, it is anti-by the first reaction tank, the second reaction tank, third reaction tank and the 4th
It after answering pond to react and filter, is discharged from discharge outlet, whole device integration, convenient at the concentration of estrogen in sewage and nitrogen
Reason.
2, sewage from the bottom of the first reaction tank enter, from bottom to top react after reserved from upper part, enable sewage with
The embedding placed in first reaction tank is nitrifying granular activated to be come into full contact with and reacts, and estrogen and ammonia nitrogen are removed；In the second reaction tank and
It is equipped with denitrification filtrate in third reaction tank, quartz sand layer is placed in the 4th reaction tank, in this way, filling in the first reaction tank
Sewage after point reaction can carry out anti-nitration reaction in the second reaction tank and third reaction tank, and by further filtering and
It absorbs, so that the nitrogen and estrogen in sewage remove more thorough, can be realized and convert nitrogen for nitrogen and thoroughly go
It removes.Treated, and sewage is further filtered by quartz sand layer, so that water outlet is cleaner.
3, whole device is simple, rationally distributed, low in cost, promotes convenient for being widely used.
4, sewage need to be only inputted in the present invention from bottom water inlet, each reaction tank can be entered by S-shaped design, most
It is discharged afterwards from discharge outlet, does not use the setting of the auxiliary such as pump during processing, reduce the loss of energy, design is reasonable.
5, the parameter for needing to control in the method in the present invention is few, easy to operate, can by series reaction and filtering
The estrogen and nitrogen in sewage are effectively removed simultaneously, reduce the destruction of estrogen and nitrogen to storage water body.
6, in treated water outlet, E2 removal rate in 90% or so, EE2 removal rate 80% or so, estrogen removal rate
80% or so.The removal rate of TN is stablized in 50-60%, is discharged TN index and is all satisfied " urban wastewater treatment firm pollutant emission mark
Quasi- (GB18918-2002) " in level-one A mark.
Detailed description of the invention
Fig. 1 is a kind of front view of coupled biological filter device of the present invention.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is that the removal rate of the E1 in sewage changes over time figure.
Fig. 5 is that the removal rate of the E2 in sewage changes over time figure.
Fig. 6 is that the removal rate of the EE2 in sewage changes over time figure.
Fig. 7 is that the removal rate of the EEQ in sewage changes over time figure.
Fig. 8 is that the removal rate of the TN in sewage changes over time figure.
In figure: the first reaction tank of 1-, the second reaction tank of 2-, 3- third reaction tank, the 4th reaction tank of 4-, 5- water inlet, 6-
Discharge outlet, 7- embed nitrifying granular activated, 8- aerator, 9- pebble layer, 10- zeolite layer, 11- quartz sand layer, 12- backwash
Pump, 13- effluent weir, 14- feed pot.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to figures 1-3, a kind of coupled biological filter device, including a shell, the inside of shell are separated by steel plate, shape
At mutually independent first reaction tank 1, the second reaction tank 2, third reaction tank 3 and the 4th reaction tank 4.Wherein, described second is anti-
Pond 2, third reaction tank 3 and the 4th reaction tank 4 is answered to be located at the same side of the first reaction tank 1.When it is implemented, described device is whole
In cuboid, shell is corrosion preventing steel plate, and the steel plate for separating each reaction tank is also corrosion preventing steel plate, with the speed for delaying steel plate to be corroded
Degree extends the service life of coupled biological filter device.
The bottom of first reaction tank 1 is equipped with water inlet 5, and upper part is connected to the top of second reaction tank 2, should
The lower part of second reaction tank 2 is connected to the lower part of the third reaction tank 3, and the top of the third reaction tank 3 is anti-with the described 4th
It answers the top in pond 4 to be connected to, is equipped with discharge outlet 6 in the lower part of the 4th reaction tank 4.Embedding nitre is equipped with inside first reaction tank 1
Change particle 7, the first reaction tank is made to form internal circulating fluidized bed.The embedding nitrifying granular activated 7 mainly includes polyurethane, activity dirt
Mud, bisacrylamide crosslinker and dimethoxybenzoin, wherein polyurethane, activated sludge, bisacrylamide crosslinker and rest in peace
Fragrant dimethyl ether is (10-18) by weight: (3-8): (0.5-1): (0.05-0.1) is added water 14.1-20.55 parts, and mixing is equal
It is even；It is placed under ultraviolet source again and irradiates 3-4 minutes, cutting, washs and obtain.Since embedding nitrifying granular activated 7 is with polyurethane water-setting
Glue is carrier, nitrifier and a small amount of active carbon particle is embedded in porous carrier inside, small molecule substrates and metabolite can
It is porous freely to enter and leave these, and nitrobacteria itself is immovable, therefore, the embedding nitrifying granular activated 7 has adsorption capacity
By force, the advantages that treatment effeciency is high, biological content is high, strain is with high purity.Drainage flow makes small molecule substrates and metabolism in sewage
Product comes into full contact with ammonia oxidizing bacteria and nitrobacteria, by sewage organic nitrogen and mineralized nitrogen be nitrate nitrogen and and sub-
Nitrate nitrogen, while the estrogen in sewage is obtained by the Co metabolism effect of nitrobacteria and the physisorption of embedded particles
Removal.
Aerator 8 is provided in the first reaction tank 1；The aerator 8 include air compressor and with the air
The connected aeration tube of compressor, the aeration tube have several aeration heads, which is placed in the bottom of first reaction tank 1
Portion.In this way, the dissolved oxygen in first reaction tank 1 is controlled in suitable concentration by control aerator 8, make to be located at this
The nitrobacteria in embedding nitrifying granular activated 7 in one reaction tank 1 is in active state, to improve the nitrification energy of nitrobacteria
Power.It is additionally provided with feed pot 14 on the first reaction tank 1, is added in the first reaction tank 1 convenient for digestion particle etc. will be embedded.Packet
Bury granular filler 1 bottom of the first reaction tank 1 volume of the first reaction tank of dosage 10%.
It is equipped with denitrification filtrate in second reaction tank 2 and third reaction tank 3, reacts the second reaction tank 2 with third
Pond 3 is denitrification filter pool；The pebble layer as supporting layer is equipped in the bottom of the second reaction tank 2, third reaction tank 3.Tool
Body, the pebble layer 9 can also play the role of filtering with a thickness of 300mm, pebble layer 9.The denitrification filtrate is boiling
Rock layers 10 are laid on 9 top of pebble layer.The diameter of the zeolite is 4-5mm, 10 thickness 900mm of zeolite layer.The zeolite is using dirty
Activated sludge in water factory's aerobic tank carries out biofilm processing.Hanging over microorganism in the activated sludge on zeolite can will be first
Reaction tank 1 react after sewage in nitrate nitrogen and cultured water be reduced to nitrogen and be discharged into air completely remove.Part
The estrogen for not being decomposed and adsorbing is utilized by the microorganism in activated sludge, and is gone by the absorption of the zeolite layer of more micro-pores 10
Remove, and by pebble layer 9 filter, thus by sewage estrogen and nitrogen completely remove.
Quartz sand is equipped in the 4th reaction tank, quartz sand layer 11 is located at 9 top of pebble layer, so that the 4th reaction
Pond is quartzy sand filter.Pebble layer 9 plays the role of support quartz sand layer 11.Quartz sand particle is smaller, is located at cobblestone
The top of layer 9, can be effectively filtered the suspended particulate in sewage, makes the sewage of discharge completely without particle, meets discharge mark
It is quasi-.
When it is implemented, in order to ensure entire coupled biological filter device keeps good using effect, in the second reaction
Back purge system is additionally provided in pond, third reaction tank and the 4th reaction tank.The back purge system includes two backwashing pumps 12,
It is connected to respectively by Backwash pipeline with the second reaction tank 2 and the 4th reaction tank 4.One of backwashing pump 12 passes through backwash
Pipeline enters from the bottom of the second reaction tank 2, since the bottom of the second reaction tank 2 is connected to the bottom of third reaction tank 3, because
This, backwashing water can be moved upwards from the bottom of the second reaction tank 2 and third reaction tank 3, be reacted the second reaction tank 2 and third
Pond 3 is rinsed.Another backwashing pump 12 is entered by Backwash pipeline from the bottom of the 4th reaction tank 4, backwashing water punching
It is flowed out after washing the 4th reaction tank 4 from the top of the 4th reaction tank 4.In the second reaction tank 2, third reaction tank 3 and the 4th reaction tank 4
Top be equipped with effluent weir 13, which is connected to the second reaction tank 2, third reaction tank 3 and the 4th reaction tank 4 simultaneously,
With the backwashing water being discharged in each pond.
Back purge system is set, the second reaction tank 2, third reaction tank 3 and the 4th reaction tank 4 can be backwashed,
Keep its reaction vigor, it is ensured that wastewater treatment efficiency is consistent, is conducive to the long-time service of the device.When backwash, backwashing water
Entered respectively from the bottom of the second reaction tank 2, third reaction tank 3 or the 4th reaction tank 4 by backwashing pump 12, first rinses goose ovum
Rock layers 9, then zeolite layer 10 or quartz sand layer 11 are rinsed upwards, finally from the second reaction tank 2, third reaction tank 3 or the 4th reaction
The top in pond 4 is discharged to effluent weir 13.Backwashing water washes away excessive biomembrane and solid waste, to keep pebble layer
9, zeolite layer 10, the reaction of quartz sand layer 11 and adsorption filtration ability, restore its reaction vigor, it is ensured that when used for a long time at sewage
It is consistent to manage effect, is conducive to the long-time service of the device.
When it is implemented, second reaction tank 2 and backwash in third reaction tank 3 every seven days are primary, wherein backwash table
Face area is 1.28m2, backwash intensity 4L/(sm2), recoil flow 1.25L/s, and recoil 2min every time, water requirement 0.15m3.Institute
State the 4th backwash daily of reaction tank 4 once, backwash surface area is 0.64m2, backwash intensity 14L/(sm2), recoil stream
4.38L/s is measured, recoil 6min every time, water requirement 1.58m3.The vigor of removing contamination of whole device is kept by backwash.
The first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank being connected to by setting S-shaped, in this way, dirty
Water is entered from the inlet in the first reaction tank by pipeline, by the first reaction tank, the second reaction tank, third reaction tank and the 4th
It after reaction tank reaction and filtering, is discharged from discharge outlet, whole device integration, convenient for the concentration of estrogen in sewage and nitrogen
Processing.Sewage enters from the bottom of the first reaction tank, reserves after reacting from bottom to top from upper part, enables sewage and first anti-
The embedding placed in Ying Chi is nitrifying granular activated to be come into full contact with and reacts, and estrogen and nitrogen are removed；In the second reaction tank and third
It is equipped with denitrification filtrate in reaction tank, is placed with quartz sand layer in the 4th reaction tank, in this way, sufficiently anti-in the first reaction tank
Sewage after answering can carry out anti-nitration reaction in the second reaction tank and third reaction tank, and further filtered and inhaled
It receives, so that the nitrogen and estrogen in sewage remove more thorough.Treated, and sewage is further filtered by quartz sand layer,
So that water outlet is cleaner.Whole device is simple, rationally distributed, low in cost, promotes convenient for being widely used.
In order to sufficiently prove effect of the invention, applicant has also carried out specific experiment and has verified.Due to microorganism, packet
It is variant to the metabolism and adsorption effect of different estrogen to bury particle and filtrate, it is as follows now to enumerate part Experiment:
Nitrifying granular activated pressed by polyurethane, activated sludge, bisacrylamide crosslinker and dimethoxybenzoin of embedding in experiment weighs
Amount for 2:5:0.5:0.05 than being made.
Water removal rate out is stablized into first reaction tank domestication to ammonia nitrogen and reaches 90% or more, the second reaction tank and third are reacted
After the removal of pond domestication to TN reach 15mg/L or less, being passed through sewage effluents or combined system pipe network overflow sewage makes entirely to embed
Digestion particle coupled biological filter device continuous operation 16 days obtains sample by sampling daily and measures, obtained result
As shown in Fig. 3-Fig. 7.Wherein, the influent concentration mean value of E1, E2, EE2 are respectively 40.14ng/L, 13.58ng/L, 4.11ng/L.
Fig. 4-Fig. 6 is respectively oestrone (estrone, E1), 17 beta estradiols (17 β-estradiol, E2), 17 in sewage
α-ethinyl estradiol (17 α-ethinylestradiol, EE2) and estradiol equivalent value (EEQ) are coupled with embedding digestion particle
The variation of biofiltration device runing time.Referring to fig. 4, E1 reaches stable in the 10th day post-processing effect, and removal rate is in 60-
70%；Referring to Fig. 5, E2 reaches stable in the 8th day post-processing effect, and removal rate is 90% or so；Referring to Fig. 6, EE2 is after the 12nd day
Treatment effect reaches stable, and removal rate is 80% or so.
Three kinds of estrogen can be used to indicate to the impact effect of oestrogenic activity in ecological environment:
[total estrogen concentration]=[E1] × 0.34+ [E2]+[EE2] × 10.
Therefore, entire coupled reactor can evaluate the removal effect of estrogen with EEQ, and the reactor is to estrogen
Treatment effect reach stable after the 12nd day, removal rate is 80% or so.
Meanwhile referring to Fig. 8, when TN mean value of intaking is 23.41mg/L, which stablizes in 50- the removal rate of TN
60%, water outlet TN index is all satisfied level-one A in " urban wastewater treatment firm pollutant emission standard (GB18918-2002) " and marks.
In conclusion can be in sewage effluents or combined system pipe network overflow sewage using the coupled biological filter device
Estrogen and nitrogen carry out advanced treating, receiving water body will not be produced after sewage discharge to receiving water body after treatment
It is raw to influence, there is the characteristics of easy to operate, processing cost is low, high treating effect.
Finally, it should be noted that technical side the above examples are only used to illustrate the technical scheme of the present invention and are not limiting
Case, those skilled in the art should understand that, modification or equivalent replacement of the technical solution of the present invention are made for those, and
The objective and range for not departing from the technical program, are intended to be within the scope of the claims of the invention.
Claims (10)
1. a kind of coupled biological filter device, it is characterised in that: including a shell, the inside of shell is separated by steel plate, is formed
Mutually independent first reaction tank, the second reaction tank, third reaction tank and the 4th reaction tank；Wherein, second reaction tank,
Three reaction tanks and the 4th reaction tank are located at the same side of the first reaction tank；The bottom of first reaction tank is equipped with water inlet,
Top is connected to the top of second reaction tank, and the lower part of second reaction tank is connected to the lower part of the third reaction tank,
The top of the third reaction tank is connected to the top of the 4th reaction tank, is equipped with discharge outlet in the lower part of the 4th reaction tank；Institute
It is nitrifying granular activated equipped with embedding to state the first reaction tank inside, the first reaction tank is made to form internal circulating fluidized bed；In second reaction
Denitrification filtrate is equipped in pond and third reaction tank, making the second reaction tank and third reaction tank is denitrification filter pool；Described
Quartz sand is equipped in 4th reaction tank, so that the 4th reaction tank is quartzy sand filter.
2. coupled biological filter device according to claim 1, it is characterised in that: the embedding is nitrifying granular activated mainly to include
Polyurethane, activated sludge, bisacrylamide crosslinker and dimethoxybenzoin, wherein polyurethane, activated sludge, double acryloyls
Amine crosslinker and dimethoxybenzoin are 10-18:3-8:0.5-1:0.05-0.1 by weight, are added water 14.1-20.55 parts,
It is uniformly mixed；It is placed under ultraviolet source again after irradiating 3-4 minutes and cuts, washs and obtain.
3. coupled biological filter device according to claim 1, it is characterised in that: be provided with aeration in the first reaction tank
Device；The aerator includes air compressor and the aeration tube that is connected with the air compressor, if the aeration tube has
Dry aeration head, the aeration head are placed in the bottom of first reaction tank.
4. coupled biological filter device according to claim 1, it is characterised in that: the denitrification filtrate is zeolite layer,
The zeolite carries out biofilm processing using the activated sludge in sewage plant aerobic tank.
5. coupled biological filter device according to claim 1, it is characterised in that: in the second reaction tank, third reaction tank
The pebble layer as supporting layer is equipped with the bottom of the 4th reaction tank.
6. coupled biological filter device according to claim 1, it is characterised in that: further include setting the second reaction tank,
Back purge system in third reaction tank and the 4th reaction tank；The back purge system includes two backwashing pumps, is passed through respectively
Backwash pipeline is connected to the second reaction tank and the 4th reaction tank.
7. coupled biological filter device according to claim 6, it is characterised in that: second reaction tank and third reaction
Pond backwash in every 7 days is primary；4th reaction tank backwashes once daily.
8. coupled biological filter device according to claim 6, it is characterised in that: in the second reaction tank, third reaction tank
Be equipped with effluent weir with the top of the 4th reaction tank, the effluent weir simultaneously with the second reaction tank, third reaction tank and the 4th reaction tank
Connection.
9. a kind of method of advanced treatment of ammonia nitrogen and estrogen, it is characterised in that: described in any item including such as claim 1-8
Coupled biological filter device, further comprising the steps of:
S1: sewage being sent into and is placed with the first nitrifying granular activated reaction bottom of pond portion of embedding, and sewage is bottom-up in the first reaction tank
Interior flowing reactive, dwell time of sewage 1-2h；
S2: sewage flows into the second reaction tank being connected to the first reaction tank from the top of the first reaction tank, enters back into and second
In the third reaction tank of reaction tank connection, denitrification processing is carried out；Sewage is controlled in the second reaction tank and third reaction tank
Flow control is 0.5-1m/h, residence time 1-2h；
S3: sewage flows into the 4th reaction tank from the top of third reaction tank, after filtering from the bottom discharge of the 4th reaction tank
Mouth discharge.
10. the method for advanced treatment of ammonia nitrogen according to claim 9 and estrogen, it is characterised in that: the embedding nitrification
Particle is the 10% of the first reaction pool volume in the dosage of the first reaction bottom of pond portion, and the dissolved oxygen in first reaction tank is
4-5mg/L。
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| CN103991951A (en) * | 2014-06-06 | 2014-08-20 | 重庆大学 | Embedded granule and method for removing estradiol in domestic wastewater by using embedded granule |
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| EP1444167A1 (en) * | 2001-10-11 | 2004-08-11 | Advanced Bioprocess Development Limited | Improvements in and relating to fluid bed expansion and fluidisation |
| CN102092900A (en) * | 2010-12-29 | 2011-06-15 | 江南大学 | Method for treating micro polluted water by using biological nitrogen removal and physicochemical enhanced phosphorus removal combined process |
| CN103991951A (en) * | 2014-06-06 | 2014-08-20 | 重庆大学 | Embedded granule and method for removing estradiol in domestic wastewater by using embedded granule |
| CN105110556A (en) * | 2015-08-24 | 2015-12-02 | 山东汇盛天泽环境工程有限公司 | Integrated denitrification decarbonization biological aerated filter and processing system thereof |
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