CN100582028C - Organism activated adsorption aeration sewage treating and water reusing method - Google Patents
Organism activated adsorption aeration sewage treating and water reusing method Download PDFInfo
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- CN100582028C CN100582028C CN200710032551A CN200710032551A CN100582028C CN 100582028 C CN100582028 C CN 100582028C CN 200710032551 A CN200710032551 A CN 200710032551A CN 200710032551 A CN200710032551 A CN 200710032551A CN 100582028 C CN100582028 C CN 100582028C
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- Biological Treatment Of Waste Water (AREA)
- Water Treatment By Sorption (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides the sewage treatment and water recycling method of a biological activation adsorption aeration. The method adopts the sewage treatment system of the biological activation adsorption aeration which is added with bio-activator and processed by anaerobic treatment to process sewage. The sewage treatment method has low operation cost, small area occupancy, producing no residual sludge, simple operation and maintenance, requiring no complex equipment construction, easy promotion and application, and is a feasible high efficiency and low consumption technique for water treatment and recycling and for preventing the eutrophication of landscape waters. The method is applicable to recycling domestic sewage in residential communities and the environment restoration and ecological management of closed or semi-closed landscape waters, and has broad application prospect. Polluted water processed by the method has the removal rate of BOD5 as high as 73.1 percent, the removal rate of COD as high as 85.6 percent, the removal rate of ammonia nitrogen as high as 96 percent, the removal rate of total phosphorus as high as 98 percent and dissolved oxygen more than 4.5 mg/L.
Description
Technical field
The present invention relates to the sewage disposal technology in environmental protection field, particularly the processing of micropollutant water and sanitary sewage and reuse technology.
Background technology
Along with the raising of people's living standard, also more and more higher to the environment requirement of living, micropollutant water such as gardens water body, residential quarters landscape water body have influenced people's orthobiosis because management maintenance is not in place.Present many landscape water and residential quarters landscape water do not have the water body purification treatment facility mostly, generally are sealing or semi-enclosed water body, easily grow algae after operation for some time, the water body greening, even it is smelly to turn black, and the eutrophication phenomenon occurs.The part landscape water body is owing to there is the direct pollution of xenobiotic pollutants (as sanitary sewage), or uses the water source of sanitary sewage as landscape water, and water body worsens, even causes problem of environmental pollution.
The processing of micropollutant water has diversion to change water, circulating filtration, artificial aeration's reoxygenation, coagulant sedimentation etc., but aforesaid method is the working cost height in practice, perhaps do not reach the landscape water quality standard, content and the bacterium algae of promptly controlling pollutents such as chemical oxygen demand (COD) (COD) in the water body, biochemical oxygen demand (BOD) (BOD), nitrogen, phosphorus, bacterial pathogens grow, and keep limpid, the cleaning and the free from extraneous odour of water body.Change water cost height, caused environmental pollution again; Circulating filtration needs higher electric energy to expend and maintenance cost; Artificial aeration's reoxygenation method especially utilizes sanitary sewage can't reach the ideal treatment effect as the landscape water body of water recharging water for the water body of water quality inferiority; Coagulant sedimentation needs delivering medicament, and is influential to fish growth.
Sewage reuse had both reduced the pollution of sanitary sewage to environment in waters such as landscape water and greenings, can alleviate the present situation of shortage of water resources again.At sanitary sewage higher lipid, carbohydrate, ammonia nitrogen, washing composition etc. are arranged, present landscape water body treatment technology can't reach the target of sanitary sewage reuse up to standard, or the reuse up to standard of sewage energy, but running cost is high.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of sewage disposal and water reusing method of organism activated adsorption aeration are provided, this method activates the microorganism of sanitary sewage main components such as energy efficient degradation Mierocrystalline cellulose, protein, fat, carbohydrate, washing composition and ammonia nitrogen in the water by adding bio-active agent; Collaborative absorption aeration can less energy-consumption be handled sanitary sewage at low cost, reaches urban sewage reutilization water for scenic environment use water quality standard.
Purpose of the present invention is achieved through the following technical solutions: a kind of sewage disposal of organism activated adsorption aeration and water reusing method, adopt the Sewage treatment systems of organism activated adsorption aeration to dispose of sewage, described Sewage treatment systems is made up of settling pit, anaerobic pond, one-level aerobic treatment pond, secondary aerobic treatment pond and three grades of aerobic treatment ponds successively, it is characterized in that specifically comprising the steps:
(1) anaerobic treatment of adding bio-active agent
Sewage treatment systems at organism activated adsorption aeration starts preceding 3～5 days, adds the bio-active agent that total concn is 10～80mg/L every day in anaerobic pond, and normal operation period must not add; Bio-active agent input amount every day M rule of thumb formula M=(31～54)-(0.28～2.0) * COD calculates, and the unit of described input amount M is g/m
3Described 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;
(2) the classification aerobic treatment of aeration gradual change
The classification aerobic treatment of the Sewage treatment systems of organism activated adsorption aeration is divided into following three grades: wherein the aeration rate of three grades of aerobic treatment is an one-level: secondary: three grades=5～4: 3～2: 2～1;
A. one-level aerobic treatment: in one-level aerobic treatment pond, lay the microorganism of creating anaerobism, little oxygen and the different types of respiration of aerobic environmental adaptation by micro porous aeration head and the uniform filling that is used for biofilm, the main body of aeration head and filler comprises top plan view and side-looking planar point position laying type at space-alternating; Lay according to waterpower flow condition and position the point position of described top plan view, when being water speed≤0.1m/s slowly, water speed adopts the plane figure of plum blossom shape, be that the aeration point is in the centre, filler around, adopt the plane figure of checkerboard when water speed is water speed 〉=0.2m/s soon, promptly aeration point and filler are at same straight line; In medium flow rate is that water speed not only can adopt the plane figure of plum blossom shape during greater than 0.1m/s and less than 0.2m/s but also can adopt the plane figure of checkerboard or two kinds of layouts are intersected and used; Described side-looking planar aeration point position is no more than the depth of water apart from 1/3 position, the middle part, aerobic treatment pond of bottom be no more than the depth of water more than 0.3 meter apart from the water surface and evenly arrange apart from 1/3 position of the water surface in the depth of water more than 0.3 meter apart from the bottom; The aeration head that each face of 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
3(gas)/m
3(water) h, described filler are elastic laminate right cylinder fibrous packing;
B. secondary aerobic treatment: in secondary aerobic treatment pond, adopt the method for design identical to create the microorganism of little oxygen and the different types of respiration of aerobic environmental adaptation with one-level aerobic treatment pond, aeration rate is 2/5～3/4 of an one-level aerobic treatment, and aeration head is laid all identical with one-level aerobic treatment pond with filler;
C. three grades of aerobic treatment: in three grades of aerobic treatment ponds, adopt the method for design identical to create the microorganism of aerobic environment adaptation aerobic repiration with one-level aerobic treatment pond, aeration head quantity and aeration rate are 1/5～1/2 of grade aerobic treatment pond, and packing density is 1/2～1 of one-level aerobic treatment pond;
(3) polluted-water is directly entered in the Sewage treatment systems of the organism activated adsorption aeration of handling well by above-mentioned steps by water-in handle, water intake velocity is 0.1m/s～0.6m/s, when surpassing 20mg/l, suspended substance in the water body stopped 30～120 minutes through settling pit, in the anaerobic pond residence time is 1～2 hour, enter behind the Aerobic Pond staggered designs by water inlet and water outlet, prolong the sewage flow process, volume and water flow velocity in residence time of aeration tank according to the pond change; The aeration operation of system 10～20 hours.
Described zymin is made up of the component of following mass percentage content: proteolytic enzyme 40～50%, lipase 40%, cellulase 10～20%; Described trace element is one or both or three kinds or four kinds or five kinds in copper, zinc, manganese, cobalt or the molybdenum etc., trace element is the necessary material of microorganism growth, the element that is in the water body to be lacked that replenishes, these elements are mostly as the activator of the moiety and the enzymic activity of amino acid, nucleic acid; Described amino acid and polysaccharide origin are in food wastes, and described amino acid is one or both in L-glutamic acid or the phenylalanine, and described polysaccharide is one or both in lactose or the sucrose.The acting as the microorganism that makes in the water body and can be higher than usual dispatch and breed growth rapidly of this bio-active agent, organic removal load reaches more than 10% when making anaerobic treatment.
Described polluted-water is landscape water body, pond waters or pool water body etc., and chemical oxygen demand (COD) in the described polluted-water (COD) is 25～150mg/l, and ammonia nitrogen concentration is 1.5～15mg/l.
The present invention creates the microorganism of anaerobism, little oxygen and the different types of respiration of aerobic environmental adaptation simultaneously in water body when the one-level aerobic treatment; Adopt a kind of follow-on elastic laminate right cylinder fibrous packing as microorganism carrier, activation adsorption hydrolysis organism adds reasonable aeration, and loading at the organic matter removal of one-level aerobic treatment reaches 40%; Organic matter removal load in the secondary aerobic treatment reaches 20%; Reach 10% at the organic matter removal of three grades of aerobic treatment load, under the few condition of aerobic environment and the available carbon source of microorganism, biology is in the endogenous metabolism stage, no excess sludge generation.
The bio-active agent Bio ActivationTM that the present invention selects for use (being called for short BA) is to be provided by Huang Shaobin teacher study group of South China Science ﹠ Engineering University, be processed into by the natural organic matter waste material, with enzyme, trace element, amino acid, polysaccharide etc. is major ingredient, but does not contain the water treatment agent of microorganism.Come pollutent in the degradation water by activating " original inhabitants " microorganism growth in the water body, optimize the design of absorption aeration simultaneously and layouts, reaction tank does not have excess sludge substantially, significantly reduces the routine maintenance expense.The defective of avoiding above-mentioned other treatment technology to exist simultaneously, as: need set up large-scale water treating equipment, complicated operation, energy consumption height, maintenance cost height, introduce secondary pollution problems.
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 microorganism in the water body can be higher than usual dispatch and breeds growth rapidly, reach the purpose of bioactivation, overcome traditional anaerobism not high shortcoming of oxygen biological activity of holding concurrently, and there is the microorganism of special absorptive function that excitation is arranged to Mierocrystalline cellulose, protein, fat, carbohydrate, washing composition and ammonia nitrogen, simultaneously can resolve into micromolecular compound to long-chain high molecular polymer such as Mierocrystalline cellulose, protein, lipid etc., the virose washing composition of general microorganism (mainly being anion surfactant) is degraded into small molecules.
(2) for the water body of heavy contamination, the cost of capital construction cost and micropollutant water is basic identical.At the higher water body of organic loading, can not need use BA, only need to regulate aeration rate and filler rationally is set and aeration point position, can reach same effect.
(3) adopt the reasonable oxygenation of method of aeration gradual change, make the utilization ratio of oxygen reach the highest and satisfy different treatment stage and the required different aerobic environment of specific microorganism growth simultaneously, transport expense 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.
(4) the present invention adopts follow-on elastic laminate right cylinder fibrous packing 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.
(5) working cost is low, and floor space is little.Be used in that (COD=35～70mg/L), basic running cost (aeration oxygen supply) is 0.02 yuan of/ton sky for oligosaprobic surface water.And technical equipment floor space of the present invention is little, the about 10 square metres of sewage quantities that can handle 30～100 tons/day.
(6) 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 the efficient low-consume technology of practicable water handling reclamation and landscape water body eutrophication prevention, can be used for the biotope sewage reuse, the environment remediation and the ecomanagement of sealing or semi-enclosed landscape water body have wide utilization prospect.
(7) by the handled polluted-water of method of the present invention, BOD
5Clearance up to 73%, the COD clearance is up to 87%, ammonia nitrogen removal frank is up to 96%, total tp removal rate is up to 98%, dissolved oxygen＞4.5mg/L.
Description of drawings
Fig. 1 is the synoptic diagram of the Sewage treatment systems of organism activated adsorption aeration of the present invention, the wherein filler of 1-water-in, 2-settling pit, 3-anaerobic pond, 4-one-level aerobic treatment pond, 5-secondary aerobic treatment pond, three grades of aerobic treatment ponds of 6-, 7-water outlet, 8-aeration head, 9-biofilm.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but the working of an invention mode is not limited thereto.
The Sewage treatment systems of organism activated adsorption aeration used in the present invention as shown in Figure 1.
Embodiment 1
(1) anaerobic treatment of adding bio-active agent
The mode of evenly spraying in water in anaerobic pond 3 in first three day that the Sewage treatment systems of organism activated adsorption aeration starts adds the bio-active agent that total concn is 50mg/L, and once a day, normal operation period must not add.Bio-active agent input amount every day (M) is formula M=40-0.78 * COD (g/m rule of thumb
3) calculate.Described bio-active agent is made up of zymin, trace element, amino acid and polysaccharide.Zymin accounts for 80% of total amount, and wherein proteolytic enzyme 50%, lipase 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% amino acid of total amount and the ratio of polysaccharide is 1: 2, and amino acid and polysaccharide origin are in food wastes, and amino acid is L-glutamic acid and phenylalanine, 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 the Sewage treatment systems of organism activated adsorption aeration 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 follow-on elastic laminate right cylinder fibrous packing;
A. one-level aerobic treatment: in one-level aerobic treatment pond 4 by micro porous aeration head 8 be used for the filler 9 of biofilm at space-alternating.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.Side-looking planar aeration point position is in the position of three kinds of different depth of waters, aeration point position the depth of water apart from the bottom 0.35 meter, middle part, aerobic treatment pond and apart from 0.35 meter even layout in of the water surface, 15 aeration heads of every square metre of layout, aeration rate is about 0.04m
3(gas)/m
3(water) .h creates the microorganism of anaerobism, little oxygen and the different types of respiration of aerobic environmental adaptation simultaneously in water body; Organic matter removal load in the one-level aerobic treatment reaches 40%.
B. secondary aerobic treatment: in secondary aerobic treatment pond 5, adopt the method for design identical to create the microorganism of little oxygen and the different types of respiration of aerobic environmental adaptation with 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.Organic matter removal load in the secondary aerobic treatment reaches 20%;
C. three grades of aerobic treatment: in three grades of aerobic treatment ponds 6, adopt the method for design identical to create the microorganism of aerobic environment adaptation aerobic repiration with one-level aerobic treatment pond, aeration head quantity and aeration rate are 1/5 of one-level Aerobic Pond, and packing density reduces half than one-level; Reach 10% at the organic matter removal of three grades of aerobic treatment load, under the few condition of aerobic environment and the available carbon source of microorganism, biology is in the endogenous metabolism stage, no excess sludge generation.
(3) be about 500m in the water yield
3The landscape water body water collecting basin, admit about 10～30m every day
3Sanitary sewage, the water-quality guideline of water collecting basin is as follows: COD=36.9mg/L, ammonia nitrogen=3.82mg/L, total phosphorus=0.48mg/L, total plate count=80000CFU/mL, turbidity=4.3NTU, hydraulic detention time is 6h, water flows and utilizes action of gravity to flow into the settling pit 2 of the Sewage treatment systems of the organism activated adsorption 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.Enter by water-in in the Sewage treatment systems of the organism activated adsorption aeration of handling well by above-mentioned steps and handle, in the anaerobic pond residence time is 2 hours, enters Aerobic Pond, by the staggered designs of water inlet and water outlet, prolonging the sewage flow process, is 4 hours in the residence time of aeration tank.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.
Working cost is 0.25～0.5 yuan/day, and the water-quality guideline of handling the back outlet sump is as follows: COD=10.3mg/L, ammonia nitrogen=0.21mg/L, total phosphorus=0.02mg/L, total plate count=5600CFU/mL, turbidity=0.4NTU.The COD clearance reaches 72%, and ammonia nitrogen removal frank is 94.5%, and total tp removal rate is 95.8%, dissolved oxygen＞4.5mg/L.Ammonia nitrogen and total phosphorus are the leading indicators of body eutrophication, illustrate that thus this method is specially adapted to the restoration of the ecosystem of middle-size and small-size eutrophication water.
Embodiment 2
(1) anaerobic treatment of adding bio-active agent
The mode of evenly spraying in water in anaerobic pond 3 in first three day that the Sewage treatment systems of organism activated adsorption aeration starts adds the bio-active agent that total concn is 60mg/L, and once a day, normal operation period must not add.Bio-active agent input amount every day (M) is formula M=38-0.8 * COD (g/m rule of thumb
3) calculate.Described bio-active agent is made up of zymin, trace element, amino acid and polysaccharide.Zymin accounts for 75% of total amount, and wherein proteolytic enzyme 50%, lipase 40%, cellulase 10%; Trace element accounts for 10% of total amount, and trace element is copper, zinc, manganese, cobalt and molybdenum; Amino acid and polysaccharide account for 15% of total amount, and the ratio of amino acid and polysaccharide is 2: 3, and amino acid and polysaccharide origin are in food wastes, and amino acid is phenylalanine, and polysaccharide is a sucrose.Above-mentioned content is mass percentage content.
(2) the classification aerobic treatment of aeration gradual change
The classification aerobic treatment of the Sewage treatment systems of organism activated adsorption aeration 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 follow-on elastic laminate right cylinder fibrous packing;
A. one-level aerobic treatment: in one-level aerobic treatment pond 4 by micro porous aeration head 8 be used for the filler 9 of biofilm 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 and filler are at same straight line.Side-looking planar aeration point position is in the position of three kinds of different depth of waters, aeration point position the depth of water apart from 1/3 position of bottom, middle part, aerobic treatment pond and evenly arrange apart from 1/3 position of the water surface, 12 aeration heads of every square metre of layout, aeration rate is about 0.14m
3(gas)/m
3(water) .h creates the microorganism of anaerobism, little oxygen and the different types of respiration of aerobic environmental adaptation simultaneously in water body; Organic matter removal load in the one-level aerobic treatment reaches 40%.
B. secondary aerobic treatment: in secondary aerobic treatment pond 5, adopt the method for design identical to create the microorganism of little oxygen and the different types of respiration of aerobic environmental adaptation with one-level aerobic treatment pond.Aeration rate is 3/4 of an one-level, and aeration head quantity and filler are laid and all remained unchanged.Organic matter removal load in the secondary aerobic treatment reaches 20%.
C. three grades of aerobic treatment: in three grades of aerobic treatment ponds 6, adopt the method for design identical to create the microorganism 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.Reach 10% at the organic matter removal of three grades of aerobic treatment load, under the few condition of aerobic environment and the available carbon source of microorganism, biology is in the endogenous metabolism stage, no excess sludge generation.
(3) be about 500m in the water yield
3The landscape water body water collecting basin, admit about 10～30m every day
3Sanitary sewage, the water-quality guideline of water collecting basin is as follows: COD=36.9mg/L, ammonia nitrogen=3.82mg/L, total phosphorus=0.48mg/L, total plate count=80000CFU/mL, turbidity=4.3NTU, hydraulic detention time is 6h, water flows and utilizes the action of gravity nature to flow into the settling pit 2 of the Sewage treatment systems of the organism activated adsorption aeration of handling well by above-mentioned steps from water-in 1, flow velocity is 0.6m/s, stop 1h through settling pit, entering by water-in in the Sewage treatment systems of the organism activated adsorption aeration of handling well by above-mentioned steps and handle, is 1.5 hours in the anaerobic pond residence time, enters behind the Aerobic Pond staggered designs by water inlet and water outlet, prolong the sewage flow process, volume and water flow velocity in residence time of aeration tank according to the pond change.In the residence time of aeration tank is 5 hours.Aerating 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.
Working cost is 0.25～0.5 yuan/day, and the water-quality guideline of handling the back outlet sump is as follows: BOD
5=6.3mg/L, COD=13.2mg/L, ammonia nitrogen=0.44mg/L, total phosphorus=0.03mg/L, total plate count=8700CFU/mL, turbidity=0.6NTU.BOD
5Clearance be 73.1%, the COD clearance reaches 75.2%, ammonia nitrogen removal frank is 93%, total tp removal rate is 95.8%, dissolved oxygen＞6mg/L.Ammonia nitrogen and total phosphorus are the leading indicators of body eutrophication, this shows, this method is equally applicable to handle the restoration of the ecosystem of middle-size and small-size pond eutrophication water and this water body.
Embodiment 3
(1) anaerobic treatment of adding bio-active agent
The mode of evenly spraying in water in anaerobic pond 3 in the first five day that the Sewage treatment systems of organism activated adsorption aeration starts adds the bio-active agent that total concn is 80mg/L, and once a day, normal operation period must not add.Bio-active agent input amount every day (M) is formula M=45-1.8 * COD (g/m rule of thumb
3) calculate.Described bio-active agent is made up of zymin, trace element, amino acid and polysaccharide.Zymin accounts for 80% of total amount, and wherein proteolytic enzyme 40%, lipase 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 the Sewage treatment systems of organism activated adsorption aeration 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;
A. one-level aerobic treatment: in one-level aerobic treatment pond 4 by micro porous aeration head 8 be used for the filler 9 of biofilm 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 submersible pump.Side-looking planar aeration point position is in the position of three kinds of different depth of waters, aeration point position the depth of water apart from the bottom 0.3 meter, middle part, aerobic treatment pond and apart from 0.3 meter even layout in of the water surface, 10 aeration heads of every square metre of layout, aeration rate is about 0.21m
3(gas)/m
3(water) .h creates the microorganism of anaerobism, little oxygen and the different types of respiration of aerobic environmental adaptation simultaneously in water body; Organic matter removal load in the one-level aerobic treatment reaches 40%.
B. secondary aerobic treatment: in secondary aerobic treatment pond 5, adopt the method for design identical to create the microorganism of little oxygen and the different types of respiration of aerobic environmental adaptation with one-level aerobic treatment pond.Aeration rate is half 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 oxygen transfer rate decline.Organic matter removal load in the secondary aerobic treatment reaches 20%.
C. three grades of aerobic treatment: in three grades of aerobic treatment ponds 6, adopt the method for design identical to create the microorganism 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.Reach 10% at the organic matter removal of three grades of aerobic treatment load, under the few condition of aerobic environment and the available carbon source of microorganism, biology is in the endogenous metabolism stage, no excess sludge generation.
(3) be about 15 in the water yield, 000m
3The pool, belong to semi-enclosed water body, exchange with the water body in the external world and only depend on rainwater to flow into.Water body presents green, and algae is arranged in the lake, based on green alga, blue-green algae, and chlorophyll α concentration C hl α=15.3mg/m
3, the raw water quality index is as follows: COD=27.9mg/L, ammonia nitrogen=3.32mg/L, total phosphorus=0.42mg/L, total plate count=75000CFU/mL, turbidity=5.2NTU, pH=5.8.Hydraulic detention time is 10h, the current flowing mode adopts submersible pump intermittently to be infused in the settling pit 2 of the Sewage treatment systems of the undersurface organism activated adsorption aeration of handling well by above-mentioned steps, flow velocity is 0.3m/s, stop 30min through settling pit, enter by water-in in the Sewage treatment systems of the organism activated adsorption aeration of handling well by above-mentioned steps and handle, in the anaerobic pond residence time is 1.5 hours, enter behind the Aerobic Pond staggered designs by water inlet and water outlet, prolong the sewage flow process, volume and water flow velocity in residence time of aeration tank according to the pond change.In the residence time of aeration tank is 4 hours.Aerating 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.
Working cost is 0.25～0.5 yuan/day, and it is as follows to survey water-quality guideline after normally moving one month: COD=7.3mg/L, ammonia nitrogen=0.18mg/L, total phosphorus=0.01mg/L, total plate count=5600CFU/mL, chlorophyll α concentration C hl α=4.8mg/m
3, turbidity=0.4NTU.The COD clearance reaches 73.8%, and ammonia nitrogen removal frank is 94.5%, and total tp removal rate is 97.6%, dissolved oxygen＞5mg/L.Ammonia nitrogen and total nitrogen are the leading indicators of body eutrophication, and chlorophyll α and turbidity directly influence the view aesthetic feeling of water body, and available thus this method is equally applicable to the restoration of the ecosystem of the semi-enclosed pool of big-and-middle-sized eutrophication water body.
Embodiment 4
Present embodiment except that following characteristics with embodiment 3: the total concn of bio-active agent is 20mg/L, and bio-active agent input amount every day (M) is formula M=54-0.3 * COD (g/m rule of thumb
3) calculate.Be about 20 in the water yield, 000m
3The pool, belong to the totally enclosed water body.Water body presents yellow-green colour, and a large amount of algae are arranged in the lake, and based on green alga, blue-green algae, chlorophyll α concentration C hl α=30.4mg/m
3, the raw water quality index is as follows: COD=144.5mg/L, ammonia nitrogen=14.4mg/L, total phosphorus=1.44mg/L, total plate count=275000CFU/mL, turbidity=16.2NTU, pH=6.2.Hydraulic detention time is 16h, and the current flowing mode adopts the submersible pump semi-batch to be infused in the settling pit 2 of the Sewage treatment systems of the undersurface organism activated adsorption aeration of handling well by above-mentioned steps.
Working cost is 0.4～0.6 yuan/day, and it is as follows to survey water-quality guideline after normally moving one month: COD=18.8mg/L, ammonia nitrogen=0.56mg/L, total phosphorus=0.03mg/L, total plate count=6500CFU/mL, chlorophyll α concentration C hl α=6.8mg/m
3, turbidity=0.8NTU.The COD clearance is up to 87%, and ammonia nitrogen removal frank is 96.1%, and total tp removal rate is 98%, and the clearance of chlorophyll α is 77.6%, dissolved oxygen＞6mg/L.COD concentration is represented the contaminated degree of water body, ammonia nitrogen and total phosphorus are the leading indicators of body eutrophication, chlorophyll α and turbidity directly influence the view aesthetic feeling of water body, this shows that this method is equally applicable to the water pollution control of totally enclosed pool and the restoration of the ecosystem of the relatively serious and eutrophication of big-and-middle-sized pollution level.
Embodiment 5
Present embodiment except that following characteristics with embodiment 3: be about 20 in the water yield, 000m
3Pond waters, belong to semi-enclosed water body, it is its main water body exchange source that rainwater flows into, water body is aquamarine, can see in the water that chlorella growth is arranged, after testing, the main water-quality guideline of source water is as follows: Chl α=16.4mg/m
3, COD=32.5mg/L, ammonia nitrogen=2.4mg/L, total phosphorus=0.32mg/L, total plate count=55000CFU/mL, turbidity=4.0NTU.Hydraulic detention time is 10h, and the current flowing mode adopts the submersible pump semi-batch to be infused in the settling pit 2 of the Sewage treatment systems of the undersurface organism activated adsorption aeration of handling well by above-mentioned steps.
Working cost is 0.25～0.5 yuan/day, and it is as follows to survey water-quality guideline after normally moving one month: chlorophyll α concentration C hl α=5.0mg/m
3, COD=5.2mg/L, ammonia nitrogen=0.12mg/L, total phosphorus=0.01mg/L, total plate count=3500CFU/mL, turbidity=0.4NTU.The clearance of chlorophyll α is 70%, and the COD clearance is 84%, and ammonia nitrogen removal frank is 95%, and total tp removal rate is 96.9%, dissolved oxygen＞4.8mg/L.Ammonia nitrogen and total phosphorus are the leading indicators of body eutrophication, and chlorophyll α and turbidity directly influence the view aesthetic feeling of water body, this shows, this method is equally applicable to the restoration of the ecosystem of the semi-enclosed pond waters of big-and-middle-sized eutrophication.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are 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, the sewage disposal and the water reusing method of a kind of bioactivation and absorption aeration, adopt the Sewage treatment systems of bioactivation and absorption aeration to dispose of sewage, described Sewage treatment systems is made up of settling pit, anaerobic pond, one-level aerobic treatment pond, secondary aerobic treatment pond and three grades of aerobic treatment ponds successively, it is characterized in that specifically comprising the steps:
(1) anaerobic treatment of adding bio-active agent
Sewage treatment systems at bioactivation and absorption aeration starts preceding 3～5 days, adds the bio-active agent that total concn is 10～80mg/L every day in anaerobic pond, and normal operation period must not add; Bio-active agent input amount every day M rule of thumb formula M=(31～54)-(0.28～2.0) * COD calculates, and the unit of described input amount M is g/m
3Described 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;
(2) the classification aerobic treatment of aeration gradual change
The classification aerobic treatment of the Sewage treatment systems of bioactivation and absorption aeration is divided into following three grades: wherein the aeration rate of three grades of aerobic treatment is the one-level aerobic treatment: the secondary aerobic treatment: three grades of aerobic treatment=5～4: 3～2: 2～1;
A. one-level aerobic treatment: in one-level aerobic treatment pond, lay the microorganism of creating anaerobism, little oxygen and the different types of respiration of aerobic environmental adaptation by micro porous aeration head and the uniform filling that is used for biofilm, the main body of aeration head and filler comprises top plan view and side-looking planar point position laying type at space-alternating; Lay according to waterpower flow condition and position the point position of described top plan view, when being water speed≤0.1m/s slowly, water speed adopts the plane figure of plum blossom shape, be that the aeration point is in the centre, filler around, adopt the plane figure of checkerboard when water speed is water speed 〉=0.2m/s soon, promptly aeration point and filler are at same straight line; In medium flow rate is that water speed adopts the plane figure of plum blossom shape during greater than 0.1m/s and less than 0.2m/s or adopts the plane figure of checkerboard or two kinds of layouts are intersected and used; Described side-looking planar aeration point position is no more than the depth of water apart from 1/3 position, the middle part, aerobic treatment pond of bottom be no more than the depth of water more than 0.3 meter apart from the water surface and evenly arrange apart from 1/3 position of the water surface in the depth of water more than 0.3 meter apart from the bottom; The aeration head that each face of 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
3(gas)/m
3(water) h, described filler are elastic laminate right cylinder fibrous packing;
B. secondary aerobic treatment: in secondary aerobic treatment pond, adopt the method for design identical to create the microorganism of little oxygen and the different types of respiration of aerobic environmental adaptation with one-level aerobic treatment pond, aeration rate is 2/5～3/4 of an one-level aerobic treatment, and aeration head is laid all identical with one-level aerobic treatment pond with filler;
C. three grades of aerobic treatment: in three grades of aerobic treatment ponds, adopt the method for design identical to create the microorganism of aerobic environment adaptation aerobic repiration with one-level aerobic treatment pond, aeration head quantity and aeration rate are 1/5～1/2 of one-level aerobic treatment pond, and packing density is 1/2～1 of one-level aerobic treatment pond;
(3) polluted-water is directly entered in the Sewage treatment systems of the bioactivation that sets by above-mentioned steps and absorption aeration by water-in handle, water intake velocity is 0.1m/s～0.6m/s, when surpassing 20mg/l, suspended substance in the water body stopped 30～120 minutes through settling pit, in the anaerobic pond residence time is 1～2 hour, enter behind the Aerobic Pond staggered designs by water inlet and water outlet, prolong the sewage flow process, volume and water flow velocity in residence time of aeration tank according to the pond change; Be 10～20 hours aeration working time of system; Described aeration tank is respectively one-level aerobic treatment pond, secondary aerobic treatment pond and three grades of aerobic treatment ponds; Described polluted-water carries out reuse after treatment.
2, the sewage disposal and the water reusing method of bioactivation according to claim 1 and absorption aeration, it is characterized in that: described zymin is made up of the component of following mass percentage content: proteolytic enzyme 40～50%, lipase 40%, cellulase 10～20%.
3, the sewage disposal and the water reusing method of bioactivation according to claim 1 and absorption aeration, it is characterized in that: described trace element is one or both or three kinds or four kinds or five kinds of copper, zinc, manganese, cobalt or molybdenum.
4, the sewage disposal and the water reusing method of bioactivation according to claim 1 and absorption aeration, it is characterized in that: described amino acid is one or both in L-glutamic acid or the phenylalanine.
5, the sewage disposal and the water reusing method of bioactivation according to claim 1 and absorption aeration, it is characterized in that: described polysaccharide is one or both in lactose or the sucrose.
6, the sewage disposal and the water reusing method of bioactivation according to claim 1 and absorption aeration, it is characterized in that: described polluted-water is landscape water body, pond waters or pool water body.
7, the sewage disposal and the water reusing method of bioactivation according to claim 1 and absorption aeration, it is characterized in that: chemical oxygen demand (COD) is 25～150mg/l in the described polluted-water, ammonia nitrogen concentration is 1.5～15mg/l.
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