CN102424501B - Method for treating trace pharmaceuticals and personal care products (PPCPs) in water through biological activation aeration process - Google Patents
Method for treating trace pharmaceuticals and personal care products (PPCPs) in water through biological activation aeration process Download PDFInfo
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- CN102424501B CN102424501B CN 201110321475 CN201110321475A CN102424501B CN 102424501 B CN102424501 B CN 102424501B CN 201110321475 CN201110321475 CN 201110321475 CN 201110321475 A CN201110321475 A CN 201110321475A CN 102424501 B CN102424501 B CN 102424501B
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- 230000036782 biological activation Effects 0.000 title abstract 3
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- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a method for treating trace pharmaceuticals and personal care products (PPCPs) in water through a biological activation aeration process. The method comprises the following steps of: (1) in 3 to 5 days before biological activation aeration aerobic treatment, adding a biological activator at the total concentration of 10-80mg/L into a primary aerobic pond each day; and (2) performing three-stage aerobic treatment on water containing trace PPCPs, wherein an aeration quantity ratio of the first stage to the second stage to the third stage is (5-4):(3-2):(2-1), the water inlet speed is 0.01-0.1m/s, and the aeration is performed for 10 to 20 hours. By the treatment method, the operating cost is low, the occupied area is small, residual sludge is not generated, the operating and maintaining processes are simple, complicated equipment is not required to be manufactured, and the method is easy to promote and apply. When the water containing the trace PPCPs is treated by the method, the removal efficiency is 70 to 95 percent.
Description
Technical field
The present invention relates to the water technology in environmental protection field, particularly the processing of sanitary sewage disposal technology and little pollution natural water body.
Background technology
PPCPs (medicine and personal-care supplies) comprises various prescribed and non prescribed medicines, like novel biological gene medicine, microbiotic, steroid, antiphlogistic drug, tranquilizer, nutritious prod, spices, makeup, perfumed soap, shampoo etc.PPCPs is proposed by Christian G.Daughton in " the Environmental Health Perspectives " that published in 1999; (comprise river, surface water, tap water) along with PPCPs is detected to be prevalent in the various water bodys, PPCPs has caused concern (common PPCPs sees table 1 in the water body) widely to environment and human influence.
Common PPCPs in table 1 water body
As the medicine of people and livestock use, PPCPs molecule biologically active, and part also has functional group acid or alkalescence; After people or domestic animal are used; Major part can not be absorbed by people or domestic animal, but is discharged in the external environment with modes such as ight soil, thereby gets into water body.PPCPs has following characteristics: 1. content is low, in water body generally with 10
-6G/L exists; 2. at the occurring in nature stable existence, be difficult to through the microbial process natural degradation; 3. have biological accumulation property and long-term hazards property.Along with the increase of population and emerging in large numbers of the new disease of plant-animal, a following segment length is in the time, and PPCPs will constantly increase in type and quantitative use.Although the PPCPs in the water body can not bring directly and fast influence to human body, yet the PPCPs long term can cause special physiological action in aquatic ecosystem.
thinks that the lipotropy of PPCPs makes it can pass through cytolemma smoothly; This pollutant is got back to biologic chain; The final normal physiological function that influences the mankind and other biological can cause consequence serious and that can not estimate.
STPs (traditional sewage treatment structure) is through different anoxic and the aerobic conditions of combination mikrobe, in order to remove organism and the nitrogenous compound in the sewage.The trace PPCPs that the microbiological treatment of tradition STPs can not effective elimination has greater environmental impacts, meanwhile, PPCPs also can not the microbial process in natural water body under biological degradation.Along with a large amount of PPCPs are widely used, should pay attention to the PPCPs in the water body especially, as can not effectively handling and control the PPCPs that is discharged in the water body, will bring serious environmental to pollute and ecological damage.
Control techniques research to PPCPs at present mainly contains: ozone oxidation, high-level oxidation technology are (like UV and UV/H
2O
2Oxidation; Fenton oxidation etc.), nanofiltration (NF) and microbial technique etc.Wherein, Microbial technique can be realized high-performance bio absorption and the biological degradation of PPCPs, this Study on Technology, development and application, trace PPCPs in the PPCPs total amount of may command Sewage Plant discharging and the minimizing water body; Improve the security of water surrounding water body greatly, improve people's living environment.Yet, adopt microbiological treatment trace PPCPs still to have technical problems such as microbial biomass deficiency, biofilm carrier specific surface area and coefficient of oxygen utilization are low.
Summary of the invention
The objective of the invention is to overcome the defective that exists in the prior art, provide a kind of bioactivation aeration system to handle the method for trace PPCPs in the water body.The present invention utilizes rough filamentary fibers to increase biofilm carrier specific surface area and microbial biomass, utilizes three grades of aerobic aeration equipment to improve oxygen transfer efficiency.Under the few condition of above-mentioned technological accumulation and inheritance and available carbon source, mikrobe is in the endogenous metabolism stage, the trace PPCPs in can the efficient degradation water body.
The present invention realizes through following technical proposals:
A kind of bioactivation aeration system is handled the method for trace PPCPs in the water body, specifically comprises the steps:
(1) adds bio-active agent
Before bioactivation aeration aerobic treatment 3～5 days, added the bio-active agent that total concn is 10～80mg/L every day in the one-level Aerobic Pond, and normal operation period must not add;
(2) the classification aerobic treatment of aeration gradual change
The water body that will contain trace PPCPs carries out three grades of aerobic treatment, and aeration rate is the first step: the second stage: the third stage=5～4: 3～2: 2～1; Water intake velocity 0.01m/s～0.1m/s, volume and water flow velocity in residence time of aeration tank according to the pond change, aeration operation 10～20 hours;
Said first step aerobic treatment: in first step aerobic treatment pond, pass through micro porous aeration head and lay creation anaerobism, double oxygen and aerobic environment with the uniform filling of hanging film;
Said second stage aerobic treatment: in aerobic treatment pond, the second stage, create hold concurrently oxygen and aerobic environment through micro porous aeration head and the uniform filling laying of hanging film;
Said third stage aerobic treatment: in third stage aerobic treatment pond, lay the creation aerobic environment through micro porous aeration head and the uniform filling of hanging film;
Said filler is rough filamentary fibers, single rough filament diameter 0.01～1mm, and specific surface area reaches 500～5000m
2/ m
3
Preferably, the aeration head of first step aerobic treatment and the laying of filler described in the step (2) spatially evenly replace, and comprise the laying of top plan view and side-looking planar point position; Water-feeding deep is controlled at 1.2～1.8m; Lay the some position of said top plan view: when water speed≤0.1m/s; Adopt aeration point in middle, filler plum blossom shape plane figure around, during water speed>=0.2m/s, employing aeration point and filler checkerboard layout at grade; When water speed is that any one or two kinds of layouts of above-mentioned two kinds of layouts are intersected and used during greater than 0.1m/s and less than 0.2m/s; Said side-looking planar aeration point position is evenly arranged in following three position: a. apart from 0.3 meter～0.5 meter position of the water surface, b. Aerobic Pond middle part, and c. evenly arranges apart from 0.3 meter～0.5 meter position, Aerobic Pond bottom; The aeration head that each face of said top plan view and side-looking plane is arranged is every square metre and arranges 10～15 aeration heads that aeration rate is 0.02～0.25m
3Gas/m
3Water h;
Said second and third grade aeration head is laid all identical with first step aerobic treatment pond with filler.
Preferably, the packing density in said first and second grade aerobic treatment pond is identical, and the packing density of third stage aerobic treatment is 1/2～1 of first step aerobic treatment pond.
Preferably, the input amount M of said bio-active agent every day rule of thumb formula M=(31～54)-(0.28～2.0) * COD calculates, and the unit of said input amount M is g/m
3
Preferably, said bio-active agent comprises the component of following mass percentage content: zymin 75～80%, and trace element 10%, amino acid and polysaccharide 10～15%, wherein the mass ratio of amino acid and polysaccharide is 1: 2～3: 4.
Preferably, said zymin is made up of the component of following mass percentage content: proteolytic enzyme 40～50%, lypase 40%, cellulase 10～20%;
Said trace element is a kind of or any several kinds mixing in copper, zinc, manganese, cobalt, the molybdenum; Trace element is the necessary material of microorganism growth, and the additional element that is in the water body to be lacked, these elements are mostly as the activator of the moity and the enzymic activity of amino acid, nucleic acid; Said amino acid and polysaccharide origin be in food wastes, and said amino acid is one or both the mixing in L-glutamic acid, the phenylpropyl alcohol nitronic acid; Said polysaccharide is one or both the mixing in lactose, the sucrose.The acting as the mikrobe that makes in the water body and can be higher than usual dispatch and breed growth rapidly of this bio-active agent.
Preferably, said water inlet and water outlet adopt staggered designs, prolong flow process.
Said water body is sewage effluents or natural water body; Main PPCPs is respectively hormones (E1+E2, EE2, androgen antagonist (Antiandrogen)), antiphlogistic drug (IBP, Naproxen Base (NPX)), Moschus class (HHCB, AHTN, ADBI), thymoleptic (Prozac (FLX)) and antibiotics (Roxithromycin (ROX), Oxacyclotetradecane,erythromycin deriv (ERY)), and concentration range is at 10～5000ng/L.
The present invention creates anaerobism simultaneously, holds concurrently oxygen and the different types of respiration of aerobic environmental adaptation in water body when the one-level aerobic treatment mikrobe; Adopt a kind of rough filamentary fibers filler as microorganism carrier, trace PPCPs in the adsorbed water body adds reasonable aeration, and this system can reach 70%～95% to the decreasing ratio of trace PPCPs in the above-mentioned water body.Microbial reaction is under the few condition of aerobic environment and available carbon source, and biology is in the endogenous metabolism stage, and no excess sludge produces.
The present invention has following advantage and beneficial effect with respect to prior art:
(1) the present invention uses bio-active agent, and treatment system is started fast, and this water treatment agent utilizes the organic wastes modification preparation of food service industry, and is cheap, safety non-toxic.And employed bio-active agent makes the mikrobe in the water body can be higher than usual dispatch and breeds growth rapidly, reaches the purpose of bioactivation, overcomes the tradition not high shortcoming of oxygen biological activity of holding concurrently, and excites in the water body mikrobe that trace PPCPs is had special absorptive function." original inhabitants " microorganism growth through activating in the water body comes absorption degradation trace PPCPs.
(2) adopt the reasonable oxygenation of method of aeration gradual change, make the utilization ratio of oxygen reach the highest with satisfy different treatment stage and the required different aerobic environment of specific microorganism growth simultaneously, transport expense is also so and descend.The aeration rate of three grades of aerobic treatment is one-level respectively: secondary: three grades=5～4: 3～2: 2～1.
(3) the present invention adopts rough filamentary fibers filler as microorganism carrier.Be easy to form lamination microbial film in filler body inside, be aided with the design of rational aeration, create aerobic environment, the possibility that does not exist pollutent such as bacterial pathogens and bacterium algae to grow with certain intervals.
(4) working cost is low, and floor space is little.Processing contains the water body of trace PPCPs, and basic running cost (aeration oxygen supply) is 0.02 yuan of/ton sky, and technical equipment floor space of the present invention is little, the about 10 square metres of sewage quantities that can handle 55～300 tons/day.
(5) the present invention does not have the excess sludge generation, and the operation and maintenance process is simple, need not build complex apparatus, is easy to promotion and application.Be practical and the water body recovery technique of efficient low energy, can be used for improving sewage effluents water quality and water ecology reparation, have wide utilization prospect.
(6) handle the water body that contains trace PPCPs through method of the present invention; Main PPCPs as: oestrogenic hormon (E1+E2, EE2), androgen antagonist, antiphlogistic drug (IBP, Naproxen Base (NPX)), Moschus class (HHCB, AHTN, ADBI), thymoleptic (Prozac (FLX)) and antibiotics (Roxithromycin (ROX), Oxacyclotetradecane,erythromycin deriv (ERY)), removal efficiency can reach 70%～95%.
Description of drawings
Fig. 1 is the synoptic diagram of bioactivation water aeration treatment system of the present invention, and last figure is a vertical view, and figure below is a side plan view.
Wherein between 1-water-in, 2-settling pit, 3-water inlet, 4-one-level aerobic treatment pond, 5-secondary aerobic treating pond, three grades of aerobic treatment ponds of 6-, 7-water outlet, 8-aeration head, 9-hang the filler of film.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but the working of an invention mode is not limited thereto.
Embodiment 1
(1) adds bio-active agent
The mode of in one-level Aerobic Pond 4, evenly spraying in water in first three day that bioactivation water aeration treatment system starts adds the bio-active agent that total concn is 28mg/L, and once a day, normal operation period must not add.Bio-active agent input amount every day (M) is formula M=45-0.45 * COD (g/m rule of thumb
3) calculate.The bio-active agent Bio ActivationTM that present embodiment is selected for use (is called for short BA; Available from Foshan Shunde Duwei Technology Environmental Protection Engineering Co.Ltd) be to process by the natural organic matter waste material; Comprise zymin, trace element, amino acid and polysaccharide, but do not contain the water treatment agent of mikrobe.Zymin accounts for 80% of total amount, and wherein proteolytic enzyme 50%, lypase 40%, cellulase 10%.Trace element accounts for 10% of total amount, and trace element is copper, zinc, manganese and cobalt.Amino acid and polysaccharide account for 10% of total amount, and the ratio of amino acid and polysaccharide is 1: 2, and amino acid and polysaccharide origin are in food wastes, and amino acid is L-glutamic acid and phenylpropyl alcohol nitronic acid, and polysaccharide is lactose and sucrose.Above-mentioned content is mass percentage content.
(2) the classification aerobic treatment of aeration gradual change
The classification aerobic treatment of bioactivation water aeration treatment system is divided into following three grades: wherein the aeration rate of three grades of aerobic treatment is an one-level: secondary: three grades=5: 2: 1; The filler that uses is rough filamentary fibers, and selecting diameter for use is the single not only stripped thread of 0.05mm, the about 2500m of specific surface area
2/ m
3
A. one-level aerobic treatment: in one-level aerobic treatment pond 4, lay at space-alternating through micro porous aeration head 8 and the filler 9 that is used to hang film.Lay according to waterpower flow condition and position the point position of top plan view, adopts the plane figure of plum blossom shape, and promptly aeration point is in the centre, and filler around.Water-feeding deep is controlled at 1.5 meters; Side-looking planar aeration point position is in the position of three kinds of different depth of waters; Aeration point position apart from 0.35 meter of the water surface, middle part, aerobic treatment pond and apart from the Aerobic Pond bottom 0.35 meter even layout in, arrange 15 aeration heads for every square metre, aeration rate is about 0.04m
3(gas)/m
3 (Water) .h, the mikrobe of in water body, create anaerobism simultaneously, holding concurrently oxygen and the different types of respiration of aerobic environmental adaptation;
B. secondary aerobic is handled: in secondary aerobic treating pond 5, adopt and the identical method of design in one-level aerobic treatment pond, aeration rate is 2/5 of an one-level, and aeration head quantity and filler are laid and all remained unchanged; Create the mikrobe of holding concurrently oxygen and the different types of respiration of aerobic environmental adaptation.
C. three grades of aerobic treatment: in three grades of aerobic treatment ponds 6, adopt and the identical method of design in one-level aerobic treatment pond, aeration head quantity and aeration rate are 1/5 of one-level Aerobic Pond, packing density than the one-level minimizing half; Create the mikrobe that aerobic environment adapts to aerobic repiration; Under the few condition of aerobic environment and the available carbon source of mikrobe, biology is in the endogenous metabolism stage, and no excess sludge produces.
(3) be about 500m in the water yield
3Water collecting basin, admit about 10～30m every day
3Certain river course river, main water quality data and PPCPs concentration are seen table 2 and table 3 respectively, hydraulic detention time is 6h.
Table 2 embodiment 1 main water quality data
Table 3 embodiment 1 main PPCPs testing data
Water flows utilizes action of gravity to flow into the settling pit 2 of the bioactivation water aeration treatment system of handling well by above-mentioned steps naturally from water-in 1, and flow velocity is 0.1m/s, stops 120 minutes through settling pit.Handle through getting in the bioactivation water aeration treatment system of handling well by above-mentioned steps between water inlet,, prolong flow process, be about 4.5 hours in the residence time of aeration tank through the staggered designs of water inlet and water outlet.The aeration of system moves 18 hours every day, realizes intermittent aeration, and every interval aeration 2 hours stops 2.5 hours, and power switch adopts Preset Time, need not manual operation.
About 0.25～0.5 yuan/day of working cost, main water quality data and PPCPs concentration after the processing are seen table 2 and table 3 respectively.The test-results of embodiment 1 shows that this method is applicable to the PPCPs that handles trace in the river water body.
Embodiment 2
(1) adds bio-active agent
The mode of in one-level Aerobic Pond 4, evenly spraying in water in first three day that bioactivation water aeration treatment system starts adds the bio-active agent that total concn is 22mg/L, and once a day, normal operation period must not add.Bio-active agent input amount every day (M) is formula M=54-0.6 * COD (g/m rule of thumb
3) calculate.Said bio-active agent (available from Foshan Shunde Duwei Technology Environmental Protection Engineering Co.Ltd) is made up of zymin, trace element, amino acid and polysaccharide.Zymin accounts for 75% of total amount, and wherein proteolytic enzyme 50%, lypase 40%, cellulase 10%.Trace element accounts for 10% of total amount, and trace element is copper, zinc, manganese and cobalt.Amino acid and polysaccharide account for 15% amino acid of total amount and the ratio of polysaccharide is 2: 3, and amino acid and polysaccharide origin are in food wastes, and amino acid is L-glutamic acid and phenylpropyl alcohol nitronic acid, and polysaccharide is lactose and sucrose.Above-mentioned content is mass percentage content.
(2) the classification aerobic treatment of aeration gradual change
The classification aerobic treatment of bioactivation water aeration treatment system is divided into following three grades: wherein the aeration rate of three grades of aerobic treatment is an one-level: secondary: three grades=4: 3: 2; The filler that uses is rough filamentary fibers, and selecting diameter for use is the single not only stripped thread of 0.01mm, the about 5000m of specific surface area
2/ m
3
A. one-level aerobic treatment: in one-level aerobic treatment pond 4, lay at space-alternating through micro porous aeration head 8 and the filler 9 that is used to hang film.Lay according to waterpower flow condition and position the point position of top plan view, adopts the plane figure of checkerboard, and promptly aeration point and filler are at same straight line.Water-feeding deep is controlled at 1.6 meters, aeration point position apart from water surface 0.4m place, middle part, aerobic treatment pond and apart from 0.4m place, Aerobic Pond bottom even layout, 12 aeration heads of every square metre of layout, aeration rate is about 0.14m
3(gas)/m
3(water) .h, the mikrobe of in water body, create anaerobism simultaneously, holding concurrently oxygen and the different types of respiration of aerobic environmental adaptation;
B. secondary aerobic is handled: in secondary aerobic treating pond 5, adopt the method for design identical with one-level aerobic treatment pond to create the mikrobe of holding concurrently oxygen and the different types of respiration of aerobic environmental adaptation.Aeration rate is 3/4 of an one-level, and aeration head quantity and filler are laid and all remained unchanged;
C. three grades of aerobic treatment: in three grades of aerobic treatment ponds 6, adopt the method for design identical to create the mikrobe of aerobic environment adaptation aerobic repiration with one-level aerobic treatment pond; Aeration head quantity and aeration rate are 2/4 of one-level Aerobic Pond, and packing density is identical with the one-level Aerobic Pond; Under the few condition of aerobic environment and the available carbon source of mikrobe, biology is in the endogenous metabolism stage, and no excess sludge produces.
(3) be about 500m in the water yield
3Water collecting basin, admit about 10～30m every day
3Certain sewage disposal plant effluent, main water quality data and PPCPs concentration are seen table 4 and table 5 respectively, hydraulic detention time is 6h.
Table 4 embodiment 2 main water quality datas
Table 5 embodiment 2 main PPCPs testing datas
Water flows utilizes action of gravity to flow into the settling pit 2 of the water treatment system of the bioactivation aeration of handling well by above-mentioned steps naturally from water-in 1, and flow velocity is 0.1m/s, stops 120 minutes through settling pit.Handle through getting in the bioactivation water aeration treatment system of handling well by above-mentioned steps between water inlet,, prolong flow process, be about 4.5 hours in the residence time of aeration tank through the staggered designs of water inlet and water outlet.The aeration of system moves 14 hours every day, realizes intermittent aeration, and every interval aeration 3 hours stops 2 hours, and power switch adopts Preset Time, need not manual operation.
About 0.25～0.5 yuan/day of working cost, main water quality data and PPCPs concentration after the processing are seen table 4 and table 5 respectively.The test-results of embodiment 2 shows that this method is applicable to the PPCPs of trace in the plant effluent of disposing of sewage.
(1) adds bio-active agent
The mode of in one-level Aerobic Pond 4, evenly spraying in water in first three day that bioactivation water aeration treatment system starts adds the bio-active agent that total concn is 45mg/L, and once a day, normal operation period must not add.Bio-active agent input amount every day (M) is formula M=50-0.28 * COD (g/m rule of thumb
3) calculate.Said bio-active agent (available from Foshan Shunde Duwei Technology Environmental Protection Engineering Co.Ltd) is made up of zymin, trace element, amino acid and polysaccharide.Zymin accounts for 80% of total amount, and wherein proteolytic enzyme 40%, lypase 40%, cellulase 20%; Trace element accounts for 10% of total amount, and trace element is for having copper, zinc, manganese; Amino acid and polysaccharide account for 10% of total amount, and the ratio of amino acid and polysaccharide is 3: 4, and amino acid and polysaccharide origin are in food wastes, and amino acid is L-glutamic acid, and polysaccharide is a lactose.Above-mentioned content is mass percentage content.
(2) the classification aerobic treatment of aeration gradual change
The classification aerobic treatment of bioactivation water aeration treatment system is divided into following three grades: wherein the aeration rate of three grades of aerobic treatment is an one-level: secondary: three grades=10: 5: 3; The filler that uses is rough filamentary fibers, and selecting diameter for use is the single not only stripped thread of 0.1mm, the about 500m of specific surface area
2/ m
3
A. one-level aerobic treatment: in one-level aerobic treatment pond 4 through micro porous aeration head 8 and the filler 9 that is used to hang film at space-alternating.Lay according to waterpower flow condition and position the point position of top plan view, adopts the plane figure of checkerboard, and promptly aeration point is in the centre, and filler around.Water flow velocity is regulated by water pump.Water-feeding deep is controlled at 1.5 meters; Side-looking planar aeration point position is in the position of three kinds of different depth of waters; Aeration point position apart from 0.3 meter of the water surface, middle part, aerobic treatment pond and apart from the Aerobic Pond bottom 0.3 meter even layout in, arrange 10 aeration heads for every square metre, aeration rate is about 0.21m
3(gas)/m
3(water) .h, the mikrobe of in water body, create anaerobism simultaneously, holding concurrently oxygen and the different types of respiration of aerobic environmental adaptation;
B. secondary aerobic is handled: in secondary aerobic treating pond 5, adopt the method for design identical with one-level aerobic treatment pond to create the mikrobe of holding concurrently oxygen and the different types of respiration of aerobic environmental adaptation.Aeration rate is the half the of one-level, and aeration head quantity and filler are laid and all remained unchanged.Because the water body dissolved oxygen after the one-level aerobic treatment is higher, excessively oxygenation only can cause working cost to raise and OTR decline;
C. three grades of aerobic treatment: in three grades of aerobic treatment ponds 6, adopt the method for design identical to create the mikrobe of aerobic environment adaptation aerobic repiration with one-level aerobic treatment pond; Aeration head quantity and aeration rate are 3/10 of one-level Aerobic Pond, and packing density is identical with the one-level Aerobic Pond; Under the few condition of aerobic environment and the available carbon source of mikrobe, biology is in the endogenous metabolism stage, and no excess sludge produces.
(3) be about 500m in the water yield
3Water collecting basin, admit about 10～30m every day
3Certain water supply plant source water, main water quality data and PPCPs concentration are seen table 6 and table 7 respectively, hydraulic detention time is 6h.
Table 6 embodiment 3 main water quality datas
Table 7 embodiment 3 main PPCPs testing datas
Water flows utilizes action of gravity to flow into the settling pit 2 of the water treatment system of the bioactivation aeration of handling well by above-mentioned steps naturally from water-in 1, and flow velocity is 0.1m/s, stops 60 minutes through settling pit.Handle through getting in the bioactivation water aeration treatment system of handling well by above-mentioned steps between water inlet,, prolong flow process, be about 4.5 hours in the residence time of aeration tank through the staggered designs of water inlet and water outlet.The aeration of system moves 10 hours every day, realizes intermittent aeration, and every interval aeration 2 hours stops 2.5 hours, and power switch adopts Preset Time, need not manual operation.
About 0.25～0.5 yuan/day of working cost, main water quality data and PPCPs concentration after the processing are seen table 6 and table 7 respectively.The test-results of embodiment 3 shows that this method is applicable to the PPCPs that handles trace in the water supply source.
The foregoing description is a preferred implementation of the present invention; But embodiment of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. a bioactivation aeration system is handled the method for trace PPCPs in the water body, it is characterized in that, specifically comprises the steps:
(1) adds bio-active agent
Before bioactivation aeration aerobic treatment 3～5 days, in the one-level Aerobic Pond, add the bio-active agent that total concn is 10～80mg/L every day;
(2) the classification aerobic treatment of aeration gradual change
The water body that will contain trace PPCPs carries out three grades of aerobic treatment, and aeration rate is the first step: the second stage: the third stage=5～4: 3～2: 2～1; Water intake velocity 0.01m/s～0.1m/s, aeration operation 10～20 hours;
Said first step aerobic treatment: in first step aerobic treatment pond, pass through micro porous aeration head and lay creation anaerobism, double oxygen and aerobic environment with the uniform filling of hanging film;
Said second stage aerobic treatment: in aerobic treatment pond, the second stage, create hold concurrently oxygen and aerobic environment through micro porous aeration head and the uniform filling laying of hanging film;
Said third stage aerobic treatment: in third stage aerobic treatment pond, lay the creation aerobic environment through micro porous aeration head and the uniform filling of hanging film;
Said filler is rough filamentary fibers, single rough filament diameter 0.01～1mm, and specific surface area reaches 500～5000m
2/ m
3
2. method according to claim 1 is characterized in that, the aeration head of first step aerobic treatment and the laying of filler described in the step (2) spatially evenly replace, and comprises the laying of top plan view and side-looking planar point position; Water-feeding deep is controlled at 1.2～1.8m; Lay the some position of said top plan view: when water speed≤0.1m/s; Adopt aeration point in middle, filler plum blossom shape plane figure around, during water speed>=0.2m/s, employing aeration point and filler checkerboard layout at grade; When water speed is that any one or two kinds of layouts of above-mentioned two kinds of layouts are intersected and used during greater than 0.1m/s and less than 0.2m/s; Said side-looking planar aeration point position is evenly arranged in following three position: a. apart from 0.3 meter～0.5 meter position of the water surface, b. Aerobic Pond middle part, and c. evenly arranges apart from 0.3 meter～0.5 meter position, Aerobic Pond bottom; The aeration head that each face of said top plan view and side-looking plane is arranged is every square metre and arranges 10～15 aeration heads that aeration rate is 0.02～0.25m
3Gas/m
3Water h;
Said second and third grade aeration head is laid all identical with first step aerobic treatment pond with filler.
3. method according to claim 2 is characterized in that, the packing density in said first and second grade aerobic treatment pond is identical, and the packing density of third stage aerobic treatment is 1/2～1 of first step aerobic treatment pond.
4. according to claim 1 or 2 or 3 described methods, it is characterized in that the input amount M of said bio-active agent every day rule of thumb formula M=(31～54)-(0.28～2.0) * COD calculates, the unit of said input amount M is g/m
3
5. method according to claim 4; It is characterized in that said bio-active agent comprises the component of following mass percentage content: zymin 75～80%, trace element 10%; Amino acid and polysaccharide 10～15%, wherein the mass ratio of amino acid and polysaccharide is 1: 2～3: 4.
6. method according to claim 5 is characterized in that, said zymin is made up of the component of following mass percentage content: proteolytic enzyme 40～50%, lypase 40%, cellulase 10～20%;
Said trace element is a kind of or any several kinds mixing in copper, zinc, manganese, cobalt, the molybdenum;
Said amino acid is one or both the mixing in L-glutamic acid, the phenylpropyl alcohol nitronic acid;
Said polysaccharide is one or both the mixing in lactose, the sucrose.
7. method according to claim 6 is characterized in that, water inlet and water outlet adopt staggered designs, prolongs flow process.
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| CN101696056B (en) * | 2009-10-16 | 2011-07-20 | 东华大学 | Method and device for biologically oxidizing and filtering pre-processing of PPCPs in drinking water |
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