CN101654315B - Electrical biofortification domestic sewage treatment device - Google Patents

Electrical biofortification domestic sewage treatment device Download PDF

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Publication number
CN101654315B
CN101654315B CN2009101525716A CN200910152571A CN101654315B CN 101654315 B CN101654315 B CN 101654315B CN 2009101525716 A CN2009101525716 A CN 2009101525716A CN 200910152571 A CN200910152571 A CN 200910152571A CN 101654315 B CN101654315 B CN 101654315B
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China
Prior art keywords
treatment device
sewage treatment
domestic sewage
district
biofortification
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CN2009101525716A
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Chinese (zh)
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CN101654315A (en
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冯华军
丛燕青
沈东升
钱钰洁
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浙江工商大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • Y02W10/18Constructed wetlands

Abstract

The invention relates to an electrical biofortification domestic sewage treatment device. The domestic sewage treatment device comprises a pond body which is sequentially divided into a biological decarburization area, a biological denitrification area and an artificial wetland dephosphorization area, wherein the biological decarburization area is provided with a plurality of ascending rooms and descending rooms which are divided by upper baffle plates and lower baffle plates, and the ascending rooms are filled with fixed fillers; the upper baffle plate and the lower baffle plate on both sides of each ascending room are attached with activated carbon fibers, and the baffle plates on both sides of the ascending rooms are connected with the anode and the cathode of a current stabilizing transformer; the biological denitrification area is provided with ascending compartments and descending compartments which are divided by a plurality of upper accordion partitions and lower accordion partitions, and a plurality of mutually spaced stainless steel nets and porous graphite plates are horizontally arranged between the upper accordion partitions and the lower accordion partitions on both sides of the ascending compartments; and the stainless steel nets and the porous graphite plates are respectively connected with the cathode and the anode of the current stabilizing transformer. The domestic sewage treatment device integrates a biotechnology and a micro-electrolysis technology and has compact and simple structure, small occupation area, low energy consumption and high treatment efficiency.

Description

A kind of electrical biofortification domestic sewage treatment device

Technical field

The present invention relates to a kind of waste disposal plant that has decarburization denitrogenation dephosphorization function simultaneously, refer in particular to a kind of sewage treatment unit that adopts the little electrolysis nitrogen of promoting the strong of electricity.

Background technology

Topmost denitrification process is A in China's tradition biological wastewater treatment technology at present 2/ O technology, it is by effluent recycling treatment condition to be realized denitrogenation to the transformation of the oxygen of holding concurrently by anaerobism again to aerobic, and this had both needed a large amount of backflow power, had increased again to handle load, therefore running cost is too big, does not handle by present most of distributing domestic sewage in rural areas by using and is adopted.

The patent No. is that 200710068353.5 Chinese invention patent discloses a kind of waste disposal plant with denitrification functions, comprise pond body and cover plate, pond body inner route clapboard is divided into anaerobism de-carbon district, aerobic nitrification district and anaerobic denitrification district successively, the aerobic nitrification district drives the aerating apparatus oxygen supply by electric energy, energy consumption is higher, this device structurally separates the anaerobic-aerobic-oxygen of holding concurrently, laid down cost and use cost have been increased, and do not remove the phosphor contaminant that contains in the sanitary sewage effectively, easily cause the eutrophication pollution of water body.

The patent No. is that 02205209.7 Chinese invention patent discloses a kind of reinforcement that horizontally rotates cylindrical shell and dynamically strengthens little electrolytic waste water treatment equipment, utilize iron-carbon microbattery electric field action, compress electrostatic double layer, the reduction microparticle surfaces energy of colloidal grain surface in the waste water, make the part pollutent be decomposed, condense and remove.Need adjust pH to acid before the waste water access to plant, discharge and again pH is transferred to neutral back after handling; The microelectrolysis process that this device need provide 30~50 volts volts DS to be used to strengthen iron-carbon bed, its energy consumption is higher; This device is filling cast iron filing and small-particle carbon dust formation iron-carbon microbattery in cylindrical shell, thereby causes the consumption of a large amount of iron filings and carbon dust; In iron-carbon microbattery, iron is oxidized to iron ion and causes water outlet to show red, needs its decolouring, therefore, this installs not only running cost height, complex management, and is applicable to the waste water from dyestuff of the electroplating wastewater that contains heavy metal ion and high density, high chroma, and is not suitable for the processing of sanitary sewage.

Summary of the invention

The invention provides a kind of electrical biofortification domestic sewage treatment device, adopt electric microfield to impel the mud biofilm to accelerate to start, adopt little electrolysis to realize sewage water denitrification, utilize the nutritive elements such as residual nitrogen phosphorus in the artificial swamp absorption sewage.

A kind of electrical biofortification domestic sewage treatment device comprises the pond body, and the pond body is provided with cover plate, and body two ends, pond are respectively equipped with water-in and water outlet, and described pond body inner route clapboard is divided into biological decarburization district, biological denitrificaion district and artificial swamp dephosphorization district successively; Biological decarburization district is provided with rising chamber and the dipped chamber that several are divided into by last traverse baffle and following traverse baffle, fixedly filler of indoor filling rises, on traverse baffle on each rising compartment both sides and following traverse baffle, has activated carbon fiber, the activated carbon fiber of last traverse baffle connects the positive pole of current stabilization transformer, and the activated carbon fiber of following traverse baffle connects the negative pole of current stabilization transformer; The biological denitrificaion district is provided with by folding dividing plate on several and rolls over rising compartment and the decline compartment that dividing plate is divided into down, rising compartment both sides go up the folding dividing plate and keep flat between the folding dividing plate down several layers apart from one another by stainless (steel) wire and porous graphite plate, the porous graphite plate of top is replaced by activated carbon fiber, wherein each the layer, stainless (steel) wire connects the negative pole of current stabilization transformer down, and the porous graphite plate is last, connect the positive pole of current stabilization transformer, the activated carbon fiber of top connects the positive pole of current stabilization transformer.

The volts DS of described current stabilization transformer is adjustable between 4~12V, and current control is at 20~80mA.

The rising compartment in the described biological de-carbon district and the width of decline compartment are than being (1: 1)-(5: 1).

The thickness of described activated carbon fiber is at 2~5mm.

Described fixedly filler is the hollow ball shape, and the easy biofilm of microorganism starts soon, can adopt bamboo fiber natural stuffing.

The upflow velocity in described biological decarburization district is controlled at 0.1-0.8m/s, and the upflow velocity in biological denitrificaion district is controlled at 0.2-0.4m/s, the general 0.3-0.6m/s of the upflow velocity in dephosphorization district.

The thickness of described stainless (steel) wire is 2mm, and the thickness of porous graphite plate is 5mm, and spacing is 60-100mm.

Uniform several diameters are about 50mm on the described porous graphite plate, and spacing is the aperture about 200mm.

Described cover plate is provided with several access openings and venting hole.

The biological denitrificaion district is provided with overflow weir near the upper end in artificial swamp dephosphorization district, and overflow weir is connected denitrogenation district water outlet; The height of overflow weir upper end is higher than the height of folding dividing plate upper end down.

Import the cloth tank in artificial swamp dephosphorization district with aqueduct from the effusive water of denitrogenation district posticum, dividing plate between cloth tank and vegetation region is covered with aperture, the outside of vegetation region is provided with water port, and guiding water is finally flowed out from water port by the vegetation region of cloth tank by artificial swamp dephosphorization district;

Fill with gravel in the cloth tank in described artificial swamp dephosphorization district; Successively spread slabstone, coarse sand and fine sand in the vegetation region, plants such as the plantation stem or leaf of cattail, reed on it.

The relative volume that whole device is looked influent quality situation rational allocation decarburization district and denitrogenation district is cycle number when, and final outflow water water quality reaches " urban wastewater treatment firm pollutant emission standard " one-level B emission standard.

Compare with conventional art, apparatus of the present invention adopt the technological merit of the little electrolysis nitrogen of promoting the strong of electricity to be little electrolysis under the weak electric field and anaerobe membrane technique are organically combined, reach the purpose of in same electric bio-reactor, effectively purifying liquid waste by complex interactions, be a kind of have start fast, energy consumption is low, water outlet is excellent, compact construction is simple, floor space is little, construction and use cost are low, advantages such as greening environment, and collection is biological, little electrolysis, artificial swamp is in one, the efficient nutritive element carbon nitrogen phosphorus of removing can be stablized effluent quality to reach the sewage treatment unit of the one-level B standard among " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002).

In biological decarburization district, the main baffling up and down that adopts, prolong flow path, strengthen sewage and fully contact attached to the microorganism on the Ball-type packing, and both sides, rising chamber traverse baffle is connected with the current stabilization transformer, utilize the direct current electric microfield that is added in the reactor two ends to promote directional migration and the growth and breeding of microorganism exactly, promote that effectively microorganism adheres to biofilm at filling surface, solved anaerobic reactor and started slow problem.

In the biological denitrificaion district, stainless (steel) wire links to each other with anodal with the negative pole of current stabilization transformer respectively with the porous graphite plate, make electrode itself also as biomembranous carrier, the oxygen that the porous graphite plate produces enters the microbial film internal layer, rely on concentration gradient to be diffused into biofilm surface, the formation internal layer is an aerobic zone, skin is the special construction of anaerobic zone, pollutent is counter diffusion then, the anisotropy of the inner substrate transmission of microbial film has formed distinctive microbial film layering situation and biological community structure, realized that decarburization is simultaneously denitrogenated in single microbial film, and this aerobic zone and anaerobic zone alternative environment help nitration denitrification simultaneously, effectively promoted the denitrogenation of microorganism.The short biotechnology of this electricity combines not only that the biological process processing cost is low, electrochemical method efficient height and the low characteristics of secondary pollution, and will cause side reaction such as heat production that current efficiency reduces in the electrochemical reaction, analyse oxygen, liberation of hydrogen, electromigration etc. and effectively utilize in biological respinse, therefore current efficiency and treatment effect are significantly improved, reduced processing cost simultaneously.

In artificial swamp dephosphorization district, adopt the biological natural purifying ability of plants such as the stem or leaf of cattail, reed, mainly utilize physics, chemistry, the biological triple synergies of soil, artificial dielectric, plant, microorganism, the sewage after the decarburization denitrogenation is further handled.

Apparatus of the present invention are that a kind of compact construction is simple, floor space is little, integrating that energy consumption is low, processing efficiency is high sewage treatment unit biological, little electrolysis.

Description of drawings

Fig. 1 is the cross-sectional view of apparatus of the present invention;

Fig. 2 is the plan structure synoptic diagram of apparatus of the present invention;

Fig. 3 is the structural representation of porous graphite plate;

Fig. 4 is the structural representation of stainless (steel) wire.

Embodiment

As shown in Figure 1, 2, a kind of electrical biofortification domestic sewage treatment device, comprise pond body 25, cover plate 17 and current stabilization transformer 24, cover plate 17 is provided with several access openings 15 and venting hole 16, body 25 two ends in pond are respectively equipped with water-in 1 and water outlet 23, and body 25 inner route clapboards in pond are divided into biological decarburization district 2, biological denitrificaion district 3 and artificial swamp dephosphorization district 4 successively.

Biological decarburization district 2 is provided with several by rising chamber and dipped chamber that last traverse baffle 7 and following traverse baffle 6 are divided into, and the indoor filling of rising is fixed with hollow ball shape filler 5, and the width ratio of rising chamber and dipped chamber is chosen 2: 1 or 4: 1.With activated carbon fiber 9, the positive and negative electrode with current stabilization transformer 24 links to each other respectively on last traverse baffle 7 and the following traverse baffle 6.

Biological denitrificaion district 2 is provided with several rising compartment and decline compartments of being divided into by last folding dividing plate 8 and following folding dividing plate 10.At folding dividing plate 8 on each rising compartment and have between the folding dividing plate 10 down some apart from one another by stainless (steel) wire 11 and porous graphite plate 12, connect the negative pole and the positive pole of current stabilization transformer 24 respectively, wherein the porous graphite plate 12 usefulness activated carbon fiber 9 of the superiors are replaced, biological denitrificaion district 2 low order ends are provided with water outlet overflow weir 13 near the upper end in artificial swamp dephosphorization district 4, the height of water outlet overflow weir 13 upper ends will be higher than the height of traverse baffle 10 upper ends down, termination denitrogenation district water outlet 18 on the water outlet overflow weir 13.

Artificial swamp dephosphorization district 4 is divided into cloth tank 27 and vegetation region 26 by porous barrier 22, use concrete placement around the artificial swamp dephosphorization district 4, denitrogenation district water outlet 18 links to each other with cloth tank 27, and cloth tank 27 is covered with aperture 29 with the dividing plate of vegetation region 26, and cloth tank 27 usefulness gravels 14 are filled; The outside of vegetation region 26 is provided with water port 23, successively spreads slabstone 20, coarse sand 19 and fine sand 21 in the vegetation region 26 from bottom to up, plants such as the plantation stem or leaf of cattail and reed 28 on it.

Treatment sewage flows in the pond body 25 from water-in 1, at first enter biological decarburization district 2, the direct current electric microfield that activated carbon fiber 9 produces promotes microorganism lateral transfer and the growth and breeding in the sewage, effectively promote microorganism in hollow ball shape filler 5 surface attachment biofilms, accelerate to start anaerobic reactor and carry out carbonization treatment.After sewage is walked around down traverse baffle 6 and is entered biological denitrificaion district 3, because stainless (steel) wire 11 and porous graphite plate 12, connect the negative pole and the positive pole of current stabilization transformer 24 respectively, thereby the hydrogen that oxygen that porous graphite plate 12 micro-electrolytic waters produce and stainless (steel) wire 11 are discharged is nitrifier, denitrifying bacteria provides oxygen and electron acceptor(EA), sewage is alternately through stainless (steel) wire 11 and porous graphite plate 12, be exactly alternately through aerobic zone and anaerobic zone, help nitration denitrification simultaneously, promoted the denitrogenation of microorganism, and the activated carbon fiber 9 of the superiors also has filteration, effectively stops the macrobead pollutent in the sewage.Effluent stream after the abundant denitrogenation of process is through water outlet overflow weir 13, enter the cloth tank 27 in artificial swamp dephosphorization district 4 along denitrogenation district water outlet 18, the aperture 29 that sees through cloth tank 27 enters the vegetation region 26 in ecological wetland dephosphorization district 4, after the sewage that water port 23 will be up to state standards after will handling enters rivers, lake.

Claims (9)

1. electrical biofortification domestic sewage treatment device, comprise pond body (25), pond body (25) is provided with cover plate (17), pond body (25) two ends are respectively equipped with water-in (1) and water outlet (23), described pond body (25) inner route clapboard is divided into biological decarburization district (2) successively, biological denitrificaion district (3) and artificial swamp dephosphorization district (4), it is characterized in that: biological decarburization district (2) is provided with several rising chamber and dipped chamber of being divided into by last traverse baffle (7) and following traverse baffle (6), fixedly filler of indoor filling rises, on traverse baffle (7) on each both sides, rising chamber and following traverse baffle (6), be respectively with activated carbon fiber, the activated carbon fiber of last traverse baffle (7) connects the positive pole of current stabilization transformer (24), and the activated carbon fiber of following traverse baffle (6) connects the negative pole of current stabilization transformer (24); Biological denitrificaion district (3) is provided with by folding dividing plate (8) on several and rolls over rising compartment and the decline compartment that dividing plate (10) is divided into down, rising compartment both sides go up folding dividing plate (8) and roll over down keep flat between dividing plate (10) several layers apart from one another by stainless (steel) wire (11) and porous graphite plate (12), the porous graphite plate of top is replaced by activated carbon fiber, wherein each the layer, stainless (steel) wire (11) is following, connect the negative pole of current stabilization transformer (24), porous graphite plate (12) is last, connect the positive pole of current stabilization transformer (24), the activated carbon fiber of top connects the positive pole of current stabilization transformer (24).
2. electrical biofortification domestic sewage treatment device as claimed in claim 1 is characterized in that: the volts DS of described current stabilization transformer (24) is 4~12V, and electric current is 20~80mA.
3. electrical biofortification domestic sewage treatment device as claimed in claim 1 is characterized in that: the rising chamber in the described biological decarburization district (2) and the width ratio of dipped chamber are 1: 1-5: 1.
4. electrical biofortification domestic sewage treatment device as claimed in claim 1 is characterized in that: the thickness of described activated carbon fiber is at 2~5mm.
5. electrical biofortification domestic sewage treatment device as claimed in claim 1, it is characterized in that: the thickness of described stainless (steel) wire (11) is 2mm, the thickness of porous graphite plate (12) is 5mm, and the spacing of stainless (steel) wire (11) and porous graphite plate (12) is 60-100mm.
6. electrical biofortification domestic sewage treatment device as claimed in claim 1 is characterized in that: it is 50mm that described porous graphite plate (12) is gone up uniform several diameters, and spacing is the aperture of 200mm.
7. electrical biofortification domestic sewage treatment device as claimed in claim 1, it is characterized in that: biological denitrificaion district (3) are provided with water outlet overflow weir (13) near the upper end in artificial swamp dephosphorization district (4), water outlet overflow weir (13) is connected biological denitrificaion district's water outlet (18), and the height of water outlet overflow weir (13) upper end is higher than the height of folding dividing plate (10) upper end down.
8. electrical biofortification domestic sewage treatment device as claimed in claim 1 is characterized in that: described cover plate (17) is provided with several access openings (15) and venting hole (16).
9. electrical biofortification domestic sewage treatment device as claimed in claim 1 is characterized in that: described fixedly filler is the hollow ball shape.
CN2009101525716A 2009-09-17 2009-09-17 Electrical biofortification domestic sewage treatment device CN101654315B (en)

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CN101654315B true CN101654315B (en) 2011-04-27

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102795744A (en) * 2012-08-10 2012-11-28 杭州净洋环保科技有限公司 Integrated life sewage nitrogen and phosphorus removal apparatus
CN102795743A (en) * 2012-08-10 2012-11-28 杭州净洋环保科技有限公司 Maintenance repair apparatus for closed water bodies
CN103693811B (en) * 2013-12-23 2014-12-03 中国农业大学 Movable micro electrolysis wetland sewage treatment method and system
CN104016532A (en) * 2014-06-25 2014-09-03 无锡市鸿创环境科技有限公司 Heavily polluted river water electrolysis denitrification and dephosphorization system and method
CN104085958B (en) * 2014-07-18 2016-01-27 山东新时代药业有限公司 A kind of micro-electrolysis reactor
CN104261521B (en) * 2014-08-29 2016-04-27 冯胜 Waste disposal plant
CN104829065B (en) * 2015-05-19 2016-11-02 东华大学 The device of integration nitration denitrification self-driven electric microfield strengthened artificial wet land
CN105541020B (en) * 2015-12-31 2017-11-14 武汉科技大学 Composite type artificial wetland desalination system based on CDI
CN105776769B (en) * 2016-05-06 2017-03-01 田镇宇 A kind of family domestic waste water regeneration device and its method of wastewater treatment
CN108147528B (en) * 2018-01-09 2020-03-06 宁波大红鹰学院 Electrical stimulation microorganism ecological restoration device

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