CN103204610A - Compound deep purification ecological floating bed with external carbon source and purification treatment method thereof - Google Patents
Compound deep purification ecological floating bed with external carbon source and purification treatment method thereof Download PDFInfo
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- CN103204610A CN103204610A CN2013101608734A CN201310160873A CN103204610A CN 103204610 A CN103204610 A CN 103204610A CN 2013101608734 A CN2013101608734 A CN 2013101608734A CN 201310160873 A CN201310160873 A CN 201310160873A CN 103204610 A CN103204610 A CN 103204610A
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Abstract
The invention relates to a compound deep purification ecological floating bed with an external carbon source and a purification treatment method thereof. The purification ecological floating bed structurally comprises a floating bed frame, an A bamboo raft, a geogrid, a polystyrene board, a plant, a nylon cable tie, a spherical framework, a gauze element, a starch/PHB (Poly-beta-hydroxybutyrate) blend, a fixing rod, a cuboid-shaped gabion and a B bamboo draft, wherein the A bamboo draft and the B bamboo draft are fixed onto the frame through iron wires; the plant 5 is fixed onto the polystyrene board; the polystyrene board is wrapped with the geogrid; the geogrid is fixed onto the frame through the nylon cable tie; a suspension rope is tied to the lower part of the geogrid; the starch/PHB blend is wrapped with the gauze element; the starch/PHB wrapped with the gauze element is placed into the framework; the framework is fixed onto the fixing rod; and the cuboid-shaped gabion is fixed onto the frame through iron wires. The compound deep purification ecological floating bed with the external carbon source has the advantages that the materials are easily available, cost is low, purification efficiency is high, effects are obvious, and management is convenient.
Description
Technical field
What the present invention relates to is that a kind of additional carbon and compound deep purifying are total to the biological floating bed and purifying treatment method of combined type, belongs to sewage treatment area.
Background technology
Biological floating bed is a kind of mode of disposing of sewage of rising the seventies in 20th century, use the cultivation technique without soil principle, terrestrial plant is introduced the water body plantation after cultivating, be carrier and matrix with the macromolecular material, adopts the water surface hydroponics technology of modern agronomy and ecological engineering measure comprehensive integration.By plant absorption and the adsorption of root system of plant and hydrolysis metabolism of surface biological film thereof to the necessary element of plants such as N, P in process of growth, organism and nutritive substance are decomposed, and final form by the results plant materials, with nutritive substances such as N, P with absorption is accumulated in the plant materials and the microorganism on root system surface is moved away from water body, pollutent is reduced significantly, thereby increase water quality, for high hydrobiological existence, procreation create conditions.
1988, Hoeger proposed biological floating bed first as the water ecology recovery technique, and has set forth the applicable cases of floating bed in German lake, so far, biological floating bedly just was used to improve water quality, eliminated water pollution, began to obtain broad research and application.Since nineteen ninety-one, China utilizes biological floating bed technology in different waters such as large reservoir, lakes, has successfully planted more than 130 kind of terrestrial plant of 46 sections, the accumulation area 10 surplus hm
2, obtained effect preferably.
Yet in biological floating bed practice process, also there is certain problem; At first, the partial rivers flow rate of water flow is very fast, makes the root of floating bed plant be not easy to fix, and makes the biofilm detachment on root surface easily simultaneously, thereby influences treatment effect; Secondly, floating bed plant just as the interim medium of nutritive substance storage, finally must shift out from water body and could remove pollutent, and the receptivity of floating bed plant root is limited, for the water body of heavy contamination, cause traditional floating bed treatment process effect to be very restricted; Again, the filler that adheres in the floating bed because denitrifying bacterium lacks enough carbon sources, makes denitrification process be subjected to obvious suppression, thereby influences decontamination effect improving; At last, floating bed plant and microbial film are limited to organic degradation capability, degradation capability to hardly degraded organic substance is limited especially, if untimely harvesting plant reaches filling carrier is handled simultaneously, then the nutritive substance in the plant materials can be discharged into water body again, microbial film also comes off easily, causes secondary pollution of water.
Summary of the invention
The invention provides the biological floating bed and purifying treatment method of the compound deep purifying of a kind of additional carbon, improving influence and the denitrifying carbon source deficiency that floating bed main body in traditional floating bed is subject to flow velocity, and pollutent difficult degradation pollutant purification problem limited in one's ability particularly.
Technical solution of the present invention: the compound deep purifying of additional carbon is biological floating bed, its structure comprises by floating bed framework, A bamboo raft, geo-grid, benzene plate, plant, nylon cable tie, spherical skeleton, gauze, starch/PHB blend, fixed link, rectangular parallelepiped gabion, B bamboo raft, wherein A bamboo raft, B bamboo raft are fixed on the framework with iron wire, plant is fixed on the benzene plate, geo-grid wraps the benzene plate, and nylon cable tie is fixed on geo-grid on the framework; At lower part series one suspension strop of geo-grid, gauze wraps starch/PHB blend, puts into skeleton through starch/PHB blend that gauze wraps, and skeletal fixation is on fixed link; The rectangular parallelepiped gabion is fixed on the framework with iron wire.
The purifying treatment method that the compound deep purifying of additional carbon is biological floating bed comprises the steps:
1) primary treatment, effluent stream is through the A bamboo raft, the solid pollutant that is suspension or levitated state is stopped, simultaneously can reduce water volume flow rate, when water body flows through A bamboo raft arrival B bamboo raft, can get off by flocculation sediment by the interception of B bamboo raft, form the flocculation sediment district between two bamboo rafts, the microorganism on bamboo raft surface also can biofilm be removed pollutents such as sub-fraction nitrogen phosphorus simultaneously;
2) second-stage treatment, after water body flows through the B bamboo raft, absorbed absorption by plant root, the microbial film that adheres on the spherical skeleton can effectively be removed pollutent simultaneously, and the starch of skeleton inside/PHB solid mixture can provide enough carbon sources for denitrifying bacterium, thereby strengthen denitrification efficient, improve purification efficiency;
3) tertiary treatment, when water body arrived the rectangular parallelepiped gabion, Zero-valent Iron energy active adsorption and degraded various heavy and organic pollutant were to some inorganic anions such as SO
4 2-, NO
3 -, PO
4 3-Deng good effect of removing is also arranged; Simultaneously gac is by physical chemistry and biological action microorganism and the heavy metal that is difficult to degrade and the organic pollutant etc. in can active adsorption water; In addition, when sluggish flow flows through, in the carbon leaching material growth a large amount of microorganisms is arranged, water quality is carried out deep layer purify.
With traditional biological floating bed comparing, the present invention has the following advantages:
1) at first, the solid pollutant that is suspension or levitated state can be stopped with bamboo raft 2 at regular intervals, in order to avoid stop up filling carrier, the flow velocity of water body can be reduced simultaneously; Water body A bamboo raft 2 back of flowing through arrives B bamboo rafts 12, is subjected to the barrier effect of B bamboo raft 12, and current can be removed the part particulate pollutant by flocculation sediment; Secondly, after effective microbe bacterium liquid intensive treatment, bamboo chip can effectively promote the apposition growth of microorganism in the water body, it is fast to have biofilm speed, the biological activity advantages of higher, pollutents such as energy absorbed portion organism and nitrogen phosphorus play the effect that suppresses algal grown simultaneously to a certain extent.
2) biological floating bed and spherical skeleton is combined, has significantly increased biological floating bed microbe population, has further improved to organism in the water body removal ability of nitrogen phosphorus.
3) spherical skeleton has good bioaffinity, and biofilm speed is fast, and microbe species is abundant, constitute bacterium, protozoon, food chains such as metazoan, make and be conducive to symbiosis and intergrowth relation complexity between the interior microorganism of microbial film microorganism and obtain nutritive substance.
Advantages such as 4) to have a water-intake rate low for starch/PHB mixture, and leaching effect is stable, and toggle speed is fast, and removal effect is good can provide enough carbon sources for denitrifying bacterium, thereby accelerate denitrification rate, the raising treatment effect.
5) when current during through the rectangular parallelepiped gabion, Zero-valent Iron can active adsorption and degraded various heavy and organic pollutant, to some inorganic anions such as SO
4 2-, NO
3 -, PO
4 3-Deng good effect of removing is also arranged; Simultaneously gac is by physical chemistry and the biological action pollution substance in can active adsorption water; In addition, when sluggish flow flows through, in the carbon leaching material growth a large amount of microorganisms is arranged, water quality is carried out deep layer purify.
6) compound advanced purification technology is as a kind of based technique for in-situ remediation, and reaction medium consumption is very slow, and can permanently effectively move, and does not need working cost, convenient management; In addition, Zero-valent Iron is drawn materials easily, and is cheap, good absorbing effect; Activated carbon treatment degree height, applied range, adaptability is strong, renewable repeated use.
Description of drawings
Accompanying drawing 1 is the biological floating bed sectional view of the compound deep purifying of additional carbon.
Accompanying drawing 2 is the biological floating bed vertical views of the compound deep purifying of additional carbon.
Accompanying drawing 3 is the biological floating bed front views of the compound deep purifying of additional carbon.
Among the figure 1 is floating bed framework, the 2nd, A bamboo raft, the 3rd, geo-grid, the 4th, benzene plate, the 5th, plant, the 6th, nylon cable tie, the 7th, spherical skeleton, the 8th, gauze, the 9th, starch/PHB blend, the 10th, fixed link, the 11st, the rectangular parallelepiped gabion, the 12nd of compound deep purifying, B bamboo raft.
Embodiment
Contrast Fig. 1,2,3, the compound deep purifying of additional carbon is biological floating bed, and its structure comprises by floating bed framework 1, A bamboo raft 2, geo-grid 3, benzene plate 4, plant 5, nylon cable tie 6, spherical skeleton 7, gauze 8, starch/PHB blend 9, fixed link 10, rectangular parallelepiped gabion 11, B bamboo raft 12, wherein A bamboo raft 2, B bamboo raft 12 usefulness iron wires are fixed on the framework 1, plant 5 is fixed on the benzene plate 4, and geo-grid 3 wraps benzene plate 4, and nylon cable tie 6 is fixed on geo-grid 3 on the framework 1; At lower part series one suspension strop 10 of geo-grid 3, gauze 8 wraps starch/PHB blend 9, puts into skeleton 7 through starch/PHB blend 9 that gauze 8 wraps, and skeleton 7 is fixed on the fixed link 10; Rectangular parallelepiped gabion 11 usefulness iron wires are fixed on the framework.
Described floating bed main body is the 50mmPVC pipe, and its corresponding specification is 2*1.2*0.4m, links together with corresponding Y-junction.
Described bamboo raft is long 0.02m, wide 0.38m, and the bamboo chip of high 0.005m is formed by connecting, and spacing is 0.01m between each bamboo chip; Before the use, bamboo chip is put into effective microbe microbial inoculum solution and is soaked 30min, lucifuge air seasoning; By cavity in the bamboo chip bamboo raft 2,12 is fixed on the floating bed framework, the distance between two bamboo rafts is 0.2m.
The specification of described benzene plate is 2*0.7*0.05m.
Described plant is fixed on the benzene plate, is to use geo-grid parcel benzene plate, and edge is fixed with nylon cable tie, simultaneously, geo-grid is fixed on the floating bed framework with nylon cable tie.
Described starch/PHB blend 9 is used W-Gum 10g, wood powder 1g, and 90 ℃ of distilled water 30g, NaCl 0.7g puts into flask, then mechanical stirring. in slurry mixture, add PHB 6.25g continuation stirring after for some time; Stir the back and regulate p with 0.5mol/L NaoH
HTo 9.5.Add the 0.8ml Epicholorohydrin, reaction flask moves on in 50 ℃ of water-baths, mechanical stirring 5h; Mud is poured in the distilled water of 1L, whizzer separates then, after precipitated product cleans repeatedly, dries a night for 60 ℃; Pour in the mould, it is solid globules about 3mm that mixture is squeezed into diameter with extrusion machine; Wherein starch accounts for 48%, PHB and accounts for 30%, wood powder 5%, additive 17%.Its dry weight 0.0296g, specific surface area 18.12cm
2/ g.
Described at geo-grid lower part series one fixed link, put into skeleton after starch/PHB mixture wrapped with gauze, carrier is suspended on the fixed link, the fixed link bottom is fixed on the floating bed framework.
The described rectangular parallelepiped gabion of the long 0.4*0.15*0.38m that the rectangular parallelepiped gabion of described compound deep purifying is made by iron wire, wherein the mesh distance is no more than 0.1mm; Be that the about 10cm of stone about 0.5mm is thick at rectangular parallelepiped gabion bottom shop one deck particle diameter, then on stone shop one deck by activated carbon, Zero-valent Iron, the mixture of quartz sand composition; Wherein Zero-valent Iron accounts for 40%, gac 30%, and quartz sand 30%, about 18cm is thick for this one deck mixture, continues the thick stone of shop one deck 10cm then on mixture.
Have 3 compound deep purifying devices of rectangular parallelepiped among the present invention, spacing 0.1m is fixed on the floating bed framework with iron wire.
Floating bed framework in water (flow) direction is that a weight is to maintain the buoyancy of floating bed integral body.
The purifying treatment method that the compound deep purifying of additional carbon is biological floating bed comprises the steps:
1) primary treatment, effluent stream is through A bamboo raft 2, the solid pollutant that is suspension or levitated state is stopped, simultaneously can reduce water volume flow rate, when water body flows through A bamboo raft 2 arrival B bamboo rafts 12, can get off by flocculation sediment by the interception of B bamboo raft 12, form the flocculation sediment district between two bamboo rafts, the microorganism on bamboo raft surface also can biofilm be removed pollutents such as sub-fraction nitrogen phosphorus simultaneously;
2) second-stage treatment, after water body flows through B bamboo raft 12, absorbed absorption by plant root, the microbial film that adheres on the spherical skeleton can effectively be removed pollutent simultaneously, and the starch of skeleton inside/PHB solid mixture can provide enough carbon sources for denitrifying bacterium, thereby strengthen denitrification efficient, improve purification efficiency;
3) tertiary treatment, when water body arrived the rectangular parallelepiped gabion, Zero-valent Iron energy active adsorption and degraded various heavy and organic pollutant were to some inorganic anions such as SO
4 2-, NO
3 -, PO
4 3-Deng good effect of removing is also arranged; Simultaneously the gac heavy metal that is difficult to degrade by physical chemistry and the biological action microorganism in can active adsorption water and organic pollutant etc.; In addition, when sluggish flow flows through, in the carbon leaching material growth a large amount of microorganisms is arranged, water quality is carried out deep layer purify.
Claims (10)
1. the compound deep purifying of additional carbon is biological floating bed, it is characterized in that comprising by floating bed framework, A bamboo raft, geo-grid, benzene plate, plant, nylon cable tie, spherical skeleton, gauze, starch/PHB blend, fixed link, rectangular parallelepiped gabion, B bamboo raft, wherein A bamboo raft, B bamboo raft are fixed on the framework with iron wire, plant is fixed on the benzene plate, geo-grid wraps the benzene plate, and nylon cable tie is fixed on geo-grid on the framework; At lower part series one suspension strop of geo-grid, gauze wraps starch/PHB blend, puts into skeleton through starch/PHB blend that gauze wraps, and skeletal fixation is on fixed link; The rectangular parallelepiped gabion is fixed on the framework with iron wire.
2. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, it is characterized in that described floating bed main body is the 50mmPVC pipe, and its corresponding specification is 2*1.2*0.4m, links together with corresponding Y-junction.
3. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, it is characterized in that described bamboo raft is long 0.02m, wide 0.38m, and the bamboo chip of high 0.005m is formed by connecting, and spacing is 0.01m between each bamboo chip; Before the use, bamboo chip is put into effective microbe microbial inoculum solution and is soaked 30min, lucifuge air seasoning; By the cavity is with the A bamboo raft in the bamboo chip, the B bamboo raft is fixed on the floating bed framework, and the distance between two bamboo rafts is 0.2m.
4. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, and the specification that it is characterized in that described benzene plate is 2*0.7*0.05m.
5. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, it is characterized in that described plant is fixed on the benzene plate, be to use geo-grid parcel benzene plate, edge is fixed with nylon cable tie, simultaneously, geo-grid is fixed on the floating bed framework with nylon cable tie.
6. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, it is characterized in that described starch/PHB blend, uses W-Gum 10g, wood powder 1g, and 90 ℃ of distilled water 30g, NaCl 0.7g puts into flask, mechanical stirring; In slurry mixture, add PHB 6.25g continuation stirring then; Stir the back and regulate p with 0.5mol/l NaOH
HTo 9.5; Add the 0.8ml Epicholorohydrin, reaction flask moves on in 50 ℃ of water-baths, mechanical stirring 5h; Mud is poured in the distilled water of 1L, whizzer separates then, after precipitated product cleans repeatedly, dries a night for 60 ℃; Pour in the mould, mixture is squeezed into the solid globules that diameter is 3mm with extrusion machine, bead specific surface area 18.12cm
2/ g.
7. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, it is characterized in that described at geo-grid lower part series one fixed link, put into skeleton after starch/PHB mixture wrapped with gauze, carrier is suspended on the fixed link, the fixed link bottom is fixed on the floating bed framework.
8. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, the described rectangular parallelepiped gabion of the long 0.4*0.15*0.38m that the rectangular parallelepiped gabion that it is characterized in that described compound deep purifying is made by iron wire, wherein the mesh distance is no more than 0.1mm; Be that the about 10cm of stone of 0.5mm is thick at rectangular parallelepiped gabion bottom shop one deck particle diameter, then on stone shop one deck by activated carbon, Zero-valent Iron, the mixture of quartz sand composition; Wherein Zero-valent Iron accounts for 40%, gac 30%, and quartz sand 30%, about 18cm is thick for this one deck mixture, continues the thick stone of shop one deck 10cm then on mixture.
9. the compound deep purifying of additional carbon according to claim 8 is biological floating bed, the rectangular parallelepiped gabion that it is characterized in that described compound deep purifying has 3, spacing 0.1m, being fixed on the floating bed framework with iron wire, is that a weight is to maintain the buoyancy of floating bed integral body at the floating bed framework of water (flow) direction.
10. the biological floating bed purifying treatment method of the compound deep purifying of additional carbon is characterized in that this method comprises the steps:
1) primary treatment, effluent stream is through the A bamboo raft; The solid pollutant that is suspension or levitated state is stopped, simultaneously can reduce water volume flow rate, when water body flows through A bamboo raft arrival B bamboo raft, be subjected to the interception of B bamboo raft that flocculation sediment is got off, form the flocculation sediment district between two bamboo rafts, the microorganism on bamboo raft surface also can biofilm be removed the sub-fraction nitrogen and phosphorus pollutants simultaneously;
2) second-stage treatment, after water body flows through the B bamboo raft, absorbed absorption by plant root, the microbial film that adheres on the spherical skeleton is effectively removed pollutent simultaneously, and the starch of skeleton inside/PHB solid mixture provides enough carbon sources for denitrifying bacterium, thereby strengthen denitrification efficient, improve purification efficiency;
3) tertiary treatment, when water body arrived the rectangular parallelepiped gabion, Zero-valent Iron energy active adsorption and degraded various heavy and organic pollutant were to some inorganic anions such as SO
4 2-, NO
3 -, PO
4 3-Good effect of removing is also arranged; Gac is by microorganism and the heavy metal that is difficult to degrade and organic pollutant in physical chemistry and the biological action active adsorption water simultaneously; In addition, when sluggish flow flows through, in the carbon leaching material growth a large amount of microorganisms is arranged, water quality is carried out deep layer purify.
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| CN113562845A (en) * | 2021-07-29 | 2021-10-29 | 汕尾粤海环保有限公司 | Denitrification strengthening device suitable for activated sludge process |
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| CN113562845A (en) * | 2021-07-29 | 2021-10-29 | 汕尾粤海环保有限公司 | Denitrification strengthening device suitable for activated sludge process |
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