CN103204610B - 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 PDF

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CN103204610B
CN103204610B CN201310160873.4A CN201310160873A CN103204610B CN 103204610 B CN103204610 B CN 103204610B CN 201310160873 A CN201310160873 A CN 201310160873A CN 103204610 B CN103204610 B CN 103204610B
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floating bed
bamboo
bamboo raft
fixed
water
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CN103204610A (en
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侯俊
王沛芳
钱进
敖燕辉
王永泉
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Hohai University HHU
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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

Biological floating bed and the purifying treatment method of the compound deep purifying of additional carbon
Technical field
What the present invention relates to is a kind of additional carbon and compound the deep purifying biological floating bed and purifying treatment method of combined type altogether, belongs to sewage treatment area.
Background technology
Biological floating bed is a kind of mode of disposing of sewage that 20 century 70s rise, use the cultivation technique without soil principle, terrestrial plant is introduced after cultivating to the water body plantation, be take macromolecular material as carrier and matrix, adopt 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 the plants such as N, P in process of growth, organism and nutritive substance are decomposed, and final by the form of results plant materials, by nutritive substances such as N, P with absorption is accumulated in plant materials and the microorganism on root system surface is moved away from water body, pollutent is significantly reduced, 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, started 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, accumulation area more than 10 hm 2, obtained effect preferably.
Yet, in biological floating bed practice process, also there is some problems; 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 easily makes the biofilm detachment on root surface, thereby affects treatment effect simultaneously; Secondly, floating bed plant just, as the temporary medium of nutritive substance storage, finally must from water body, shift out 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 adhered in floating bed, because denitrifying bacterium lacks enough carbon sources, make denitrification process be subject to obvious inhibition, thereby affect decontamination effect improving; Finally, floating bed plant and microbial film are limited to organic degradation capability, degradation capability to hardly degraded organic substance is limited especially, if gather in not in time plant simultaneously and filling carrier processed, the nutritive substance in plant materials can be discharged into water body again, microbial film also easily comes off, and 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, be subject to impact and the denitrifying carbon source deficiency of flow velocity to improve floating bed frame in traditional floating bed, 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 frame, 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 floating bed frame 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 floating bed frame; At lower part series one fixed link of geo-grid, gauze wraps starch/PHB blend, and the starch wrapped through gauze/PHB blend is put into spherical skeleton, and spherical skeleton is fixed on fixed link; The rectangular parallelepiped gabion is fixed on the biological floating bed system of the compound deep purifying of additional carbon on floating bed frame with iron wire and partly is connected in sequence by bamboo raft part, biological floating bed part and rectangular parallelepiped gabion; The biological floating bed system of the compound deep purifying of additional carbon partly is connected in sequence by bamboo raft part, biological floating bed part and rectangular parallelepiped gabion; Described fixed link bottom is fixed on floating bed frame; Described bamboo raft is long 0.02m, wide 0.38m, and the bamboo chip of high 0.005m is formed by connecting, and between each bamboo chip, spacing is 0.01m; Before use, bamboo chip is put into effective microbe microbial inoculum solution and is soaked 30min, lucifuge air seasoning; At the thick stone of rectangular parallelepiped gabion bottom paving one deck 10cm, cobble-stone diameter is 0.5mm, then on stone, spreads one deck by gac, Zero-valent Iron, the mixture that quartz sand forms; Wherein Zero-valent Iron accounts for 40%, gac 30%, and quartz sand 30%, 18cm is thick for this one deck mixture, then on mixture, continues the thick stone of paving one deck 10cm.
The purifying treatment method that the compound deep purifying of additional carbon is biological floating bed, comprise the steps:
1) primary treatment, effluent stream is through the A bamboo raft, the solid pollutant that is suspension or levitated state is stopped, the A bamboo raft can reduce water volume flow rate simultaneously, when water body flows through A bamboo raft arrival B bamboo raft, the flocculation of water body is precipitated by the interception of B bamboo raft, forms the flocculation sediment district between two bamboo rafts, and the microorganism colonization on bamboo raft surface is removed the sub-fraction nitrogen and phosphorus pollutants simultaneously;
2) second-stage treatment, after water body flows through the B bamboo raft, absorbed by plant root, the microbial film simultaneously adhered on spherical skeleton is removed pollutent, and the starch of spherical skeleton inside/PHB blend provides enough carbon sources for denitrifying bacterium, thereby strengthen denitrification efficiency, improve purification efficiency;
3) tertiary treatment, when water body arrives the rectangular parallelepiped gabion, Zero-valent Iron absorption various heavy and degraded Some Organic Pollutants, to some inorganic anion SO 4 2-, NO 3 -, PO 4 3removal effect is also arranged; Simultaneously gac is by the microorganism in the biological action planar water of the microorganism that grows on physics chemical action and gac and heavy metal and the organic pollutant of hard degradation; In addition, when sluggish flow flows through, on carbon leaching material, growth has a large amount of microorganisms, and water quality is carried out to the deep layer purification.
With traditional biological floating bed comparing, the present invention has the following advantages:
1) at first, with bamboo raft 2 at regular intervals, the solid pollutant that is suspension or levitated state can be stopped, in order to avoid stop up filling carrier, the flow velocity of water body can be reduced simultaneously; The water body rear arrival of the A bamboo raft 2 B bamboo raft 12 of flowing through, be subject 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 water body, there is biofilm speed fast, the biological activity advantages of higher, the 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 water body the removal ability of nitrogen phosphorus.
3) spherical skeleton has good bioaffinity, and biofilm speed is fast, and microbe species is abundant, form bacterium, protozoon, the food chains such as metazoan, make symbiosis and intergrowth relation complexity between the interior microorganism of microbial film, be conducive to microorganism and obtain nutritive substance.
The advantages such as 4) to have a water-intake rate low for starch/PHB blend, 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 energy active adsorption and degraded various heavy and organic pollutant, to some inorganic anions as SO 4 2-, NO 3 -, PO 4 3-deng good removal effect is also arranged; Simultaneously gac by physical chemistry and biological action the pollution substance in can active adsorption water; In addition, when sluggish flow flows through, on carbon leaching material, growth has a large amount of microorganisms, and water quality is carried out to the deep layer purification.
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, cheap, good absorbing effect; The activated carbon treatment degree is high, applied range, strong adaptability, renewable reusing.
The accompanying drawing explanation
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.
In figure 1 is floating bed frame, 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 frame 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 use iron wires are fixed on floating bed frame 1, plant 5 is fixed on benzene plate 4, and geo-grid 3 wraps benzene plate 4, and nylon cable tie 6 is fixed on geo-grid 3 on floating bed frame 1; At lower part series one fixed link 10 of geo-grid 3, gauze 8 wraps starch/PHB blend 9, and the starch wrapped through gauze 8/PHB blend 9 is put into spherical skeleton 7, and spherical skeleton 7 is fixed on fixed link 10; Rectangular parallelepiped gabion 11 use iron wires are fixed on floating bed frame.
Described floating bed frame is made by the 50mmPVC pipe, and its dimension is 2*1.2*0.4m, the effective Y-junction of the 50mmPVC formation floating bed frame that links together.
Described bamboo raft is long 0.02m, wide 0.38m, and the bamboo chip of high 0.005m is formed by connecting, and between each bamboo chip, spacing is 0.01m; Before use, bamboo chip is put into effective microbe microbial inoculum solution and is soaked 30min, lucifuge air seasoning; By cavity in bamboo chip, bamboo raft 2,12 is fixed on floating bed frame, 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, uses geo-grid parcel benzene plate, and edge is fixed with nylon cable tie,, geo-grid is fixed on floating bed frame with nylon cable tie simultaneously.
Described starch/PHB blend 9, use W-Gum 10g, wood powder 1g, and 90 ℃ of distilled water 30g, NaCl 0.7g puts into flask, then mechanical stirring. and in backward slurry mixture of for some time, add PHB 6.25g to continue to stir; Regulate pH to 9.5 with 0.5mol/L NaOH after stirring.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, then whizzer separates, and after precipitated product cleans repeatedly, dries a night for 60 ℃; Pour in mould, mixture is squeezed into to the solid globules that diameter is the 3mm left and right 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, after being wrapped with gauze, starch/PHB blend puts into spherical skeleton, spherical skeleton is fixed on fixed link, the fixed link bottom is fixed on floating bed frame.
The described rectangular parallelepiped gabion of the high 0.4*0.15*0.38m of being of the wide * of long * 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; At the thick stone of rectangular parallelepiped gabion bottom paving one deck 10cm, cobble-stone diameter is 0.5mm, then on stone, spreads one deck by gac, Zero-valent Iron, the mixture that quartz sand forms; Wherein Zero-valent Iron accounts for 40%, gac 30%, and quartz sand 30%, about 18cm is thick for this one deck mixture, then on mixture, continues the thick stone of paving one deck 10cm.
Have 3 compound device for deep cleanings of rectangular parallelepiped in the present invention, spacing 0.1m, be fixed on floating bed frame with iron wire.
On the floating bed frame of water (flow) direction, be 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, comprise the steps:
1) primary treatment, effluent stream is through A bamboo raft 2, the solid pollutant that is suspension or levitated state is stopped, A bamboo raft 2 can reduce water volume flow rate simultaneously, when water body flows through A bamboo raft 2 arrival B bamboo raft 12, the flocculation of water body is precipitated by the interception of B bamboo raft 12, forms the flocculation sediment district between two bamboo rafts, and the microorganism on bamboo raft surface also can biofilm be removed the pollutents such as sub-fraction nitrogen phosphorus simultaneously;
2) second-stage treatment, after water body flows through B bamboo raft 12, by plant root, absorbed, the microbial film simultaneously adhered on spherical skeleton can effectively be removed pollutent, and the starch of spherical skeleton inside/PHB blend can provide enough carbon sources for denitrifying bacterium, thereby the reinforcement denitrification efficiency, improve purification efficiency;
3) tertiary treatment, when water body arrives the rectangular parallelepiped gabion, Zero-valent Iron energy active adsorption various heavy and degraded Some Organic Pollutants, to some inorganic anions as SO 4 2-, NO 3 -, PO 4 3-deng good removal effect is also arranged; The heavy metal of the microorganism of the simultaneously biological action of gac by the microorganism that grows on physics chemical action and gac in can active adsorption water and hard degradation and organic pollutant etc.; In addition, when sluggish flow flows through, on carbon leaching material, growth has a large amount of microorganisms, and water quality is carried out to the deep layer purification.

Claims (9)

1. the compound deep purifying of additional carbon is biological floating bed, it is characterized in that comprising floating bed frame, 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 and all vertical settings of B bamboo raft, and before being arranged at benzene plate and geo-grid, after the rectangular parallelepiped gabion is arranged at benzene plate and geo-grid,a bamboo raft, B bamboo raft are fixed on floating bed frame with iron wire, and plant is fixed on the benzene plate, and geo-grid wraps the benzene plate, and nylon cable tie is fixed on geo-grid on floating bed frame; At lower part series one fixed link of geo-grid, gauze wraps starch/PHB blend, and the starch wrapped through gauze/PHB blend is put into spherical skeleton, and spherical skeleton is fixed on fixed link; The rectangular parallelepiped gabion is fixed on floating bed frame with iron wire, and described fixed link bottom is fixed on floating bed frame; Described bamboo raft is long 0.02m, wide 0.38m, and the bamboo chip of high 0.005m is formed by connecting, and between each bamboo chip, spacing is 0.01m; Before use, bamboo chip is put into effective microbe microbial inoculum solution and is soaked 30min, lucifuge air seasoning; At the thick stone of rectangular parallelepiped gabion bottom paving one deck 10cm, cobble-stone diameter is 0.5mm, the mixture that then paving one deck is comprised of gac, Zero-valent Iron, quartz sand on stone; Wherein Zero-valent Iron account for 40%, gac 30%, quartz sand 30%, 18cm is thick for this one deck mixture, then on mixture, continues the thick stone of paving one deck 10cm.
2. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, it is characterized in that described floating bed frame made by the 50mmPVC pipe, the dimension of floating bed frame is 2*1.2*0.4m, the effective Y-junction of the 50mmPVC formation floating bed frame that links together.
3. the compound deep purifying of additional carbon according to claim 1 is biological floating bed, it is characterized in that the B bamboo raft is fixed on floating bed frame by bamboo chip, cavity is by the A bamboo raft, 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, use geo-grid parcel benzene plate, edge is fixed with nylon cable tie, simultaneously, geo-grid is fixed on floating bed frame 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; Then in slurry mixture, add PHB 6.25g to continue to stir; Regulate pH to 9.5 with 0.5mol/L NaOH after stirring; 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, then whizzer separates, and after precipitated product cleans repeatedly, dries a night for 60 ℃; Pour in mould, mixture is squeezed into to 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, the described rectangular parallelepiped gabion that it is characterized in that the high 0.4*0.15*0.38m of being of the wide * of long * 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.
8. the compound deep purifying of additional carbon according to claim 7 is biological floating bed, the rectangular parallelepiped gabion that it is characterized in that described compound deep purifying has 3, spacing 0.1m, with iron wire, be fixed on floating bed frame, be that a weight is to maintain the buoyancy of floating bed integral body on the floating bed frame of water (flow) direction.
9. one kind adopts the biological floating bed purifying treatment method of the compound deep purifying of additional carbon as claimed in claim 1, it is characterized in that the 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, the A bamboo raft can reduce water volume flow rate simultaneously, when water body flows through A bamboo raft arrival B bamboo raft, the flocculation of water body is precipitated by the interception of B bamboo raft, forms the flocculation sediment district between two bamboo rafts, and the microorganism colonization on bamboo raft surface is removed the sub-fraction nitrogen and phosphorus pollutants simultaneously;
2) second-stage treatment, after water body flows through the B bamboo raft, absorbed by plant root, the microbial film simultaneously adhered on spherical skeleton is removed pollutent, and the starch of spherical skeleton inside/PHB blend provides enough carbon sources for denitrifying bacterium, thereby strengthen denitrification efficiency, improve purification efficiency;
3) tertiary treatment, when water body arrives the rectangular parallelepiped gabion, Zero-valent Iron absorption various heavy and degraded Some Organic Pollutants, to some inorganic anion SO 4 2-, NO 3 -, PO 4 3-removal effect is also arranged; Simultaneously gac is by the microorganism in the biological action planar water of the microorganism that grows on physics chemical action and gac and heavy metal and the organic pollutant of hard degradation; In addition, when sluggish flow flows through, on carbon leaching material, growth has a large amount of microorganisms, and water quality is carried out to the deep layer purification.
CN201310160873.4A 2013-05-06 2013-05-06 Compound deep purification ecological floating bed with external carbon source and purification treatment method thereof Active CN103204610B (en)

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