CN103359871B - Micro-electric field hydrocyclone system for treatment of farmland runoff rainwater - Google Patents
Micro-electric field hydrocyclone system for treatment of farmland runoff rainwater Download PDFInfo
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- CN103359871B CN103359871B CN201310304119.3A CN201310304119A CN103359871B CN 103359871 B CN103359871 B CN 103359871B CN 201310304119 A CN201310304119 A CN 201310304119A CN 103359871 B CN103359871 B CN 103359871B
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Abstract
The invention discloses a micro-electric field hydrocyclone system for treatment of farmland runoff rainwater. The operation effect of a hydrocyclone can be strengthened by the effect of the electric field, and the suspended matters (especially colloidal soil particles with a smaller diameter) carried in the rainwater can be effectively removed. The positive electrode involved in the system adopts a titanium alloy material, the negative electrode adopts a carbon steel plate, and the voltage between the electrode plates is 60-100v. The system provided in the invention solves the defects of long purification time and low load of an ecological system, not only has a good purification effect, but also can well recover nutrient-rich soil to achieve the efficacy of rainwater purification and water and soil conservation, thus providing a new idea for pretreatment of farmland ditch runoff.
Description
Technical field
The invention relates to that rainwater pre-treatment and water quality of river control, particularly a kind of farmland rainfall runoff collecting with face source form has intercepting system separated and soil recovery to particulate pollutant before entering river course.
Background technology
At present, the lake and reservoir eutrophication problem that pollution of area source causes is very serious, as in Chaohu, the statistical information of Dian Chi, reservoir area of Three Gorges shows, 90% suspended substance is from agricultural run-off, nitrogen, phosphorus major part derive from the particulate pollutant (soil particle is main) of agricultural run-off, and visible farmland non-point pollution source occupies critical role in water pollution.Comparatively common farmland pollution of area source control techniques be take ecotechnology as main at present, comprises wetland technology, shore bank buffer strip, the artificial pool and ecological agriculture technology etc.
But Ecological Disposal technology has that floor space is large, processing efficiency is lower and the obvious defect such as load-bearing ability.Compare ecological holding back and degradation technique, Applied Physics isolation technique has simply, the advantage such as rapidly and efficiently, and to the rainfall runoff short period of time, the feature of high loading is more value in use.There are some researches show, the suspended substance in rainfall runoff is with negative potential in various degree, and its current potential order of magnitude and storm flow exist positive correlation, and this explanation rainfall runoff conditions favouring is in electric microfield strengthening effect.
Hydrocyclone is a kind of application two-phase or multiphase physical sepn equipment very widely, is the high efficiency separation equipment of separated different densities mixture under effect of centrifugal force.Because it is simple in structure, floor space is little, separation efficiency is high, operation and maintenance cost is low, be easy to the advantages such as automatic control, to compare with other physical sepn equipment, hydrocyclone has unrivaled advantage.On the one hand, hydrocyclone at present has comparatively extensive and ripe application in fields such as mining processing industry, nonmetalliferous ore processing and powder processing, kaolin production, food-processing, papermaking, petroleum industries, but in the application of rainwater preprocessing technical field still in the starting stage.But utilize electric microfield strengthening effect to process the hydrocyclone systems of rainfall runoff, still never had at present report.
Summary of the invention
Object of the present invention, long for solving the ecosystem clarification time, bear the defect that load is lower; For farmland ditch runoff suspended particle state pollutent, be main feature, a kind of electric microfield hydrocyclone systems of simple, efficient separated from contaminants is provided.
The present invention is achieved by following technical solution.
A kind of electric microfield hydrocyclone systems for the treatment of agricultural run-off rainwater, comprise water-in, eddy flow working spaces and slurry chamber, it is characterized in that, before described water-in 1, be provided with the irrigation canals and ditches 2 that conflux, the end of irrigation canals and ditches 2 of confluxing is connected with water-in 1 by adapter bonnet 3, and the front end of adapter bonnet 3 is to be 45 ° of downward-sloping drop slopes; The other end of irrigation canals and ditches 2 of confluxing is connected with the channel of agricultural run-off rainwater; The described irrigation canals and ditches 2 of confluxing are for closed structure, and at the bottom of its bottom be U-shaped canal, the rear portion at the bottom of U-shaped canal is provided with blocks water bank 4, block water bank 4 below be provided with flow regulation pipe 5;
Being connected with eddy flow working spaces 6 below of described water-in 1, eddy flow working spaces 6 is for being arranged on the underground device under water-in 1 level, below it, be provided with reverse taper pipe 7, reverse taper pipe 7 be below provided with slurry chamber 8, slurry chamber 8 is provided with mud relief outlet 9 by another inverted pyramidal structures; The outside of described eddy flow working spaces 6, reverse taper pipe 7 and slurry chamber 8 is provided with concrete cover 10;
Eddy flow working spaces 6 is metal barrel shaped structure, also as positive electrode plate; The central position of eddy flow working spaces 6 is provided with upflow tube 11, and upflow tube 11 is also metal barrel shaped structure, also as negative electrode plate; The operating performance of the fortified water power that the is used for eddy flow system by electric field, effectively removes the suspended substance that rainwater is carried secretly;
Slurry chamber 8 is also metal barrel shaped structure, is limit wall pole plate 12, and the central position of slurry chamber 8 is also provided with central electrode 13, and its inside also exists electric field to strengthen standing effect;
The top of eddy flow working spaces 6 is provided with steel plate 15He overflow chamber 16, and overflow chamber 16 is connected with upflow tube 11, in order to get rid of, removes suspended substance rainwater afterwards;
Slurry chamber 8 is provided with umbrella hood 14 with the interface of reverse taper pipe 7, in order to prevent that the macrobead suspended substance that enters slurry chamber from returning and entering inward eddy under perturbation action;
Slurry chamber 8 is connected with the irrigation canals and ditches 2 that conflux by flow regulation pipe 5;
The internal diameter of described eddy flow working spaces 6 is 200～300mm, and its height is 1:1 with the ratio of internal diameter; The height of reverse taper pipe 7 is 300mm, and cone angle is 15 °, and underflow tap diameter is 40mm; The diameter of upflow tube 11 is 50mm, the height of its depth of penetration Wei0.9Bei eddy flow working spaces 6; The diameter of slurry chamber 8 is 1.2 times of eddy flow working spaces 6 diameters, is highly eddy flow working spaces 6 and reverse taper pipe 7 total heights 0.4～0.6 times.
Anode in described hydrocyclone systems is selected titanium alloy material, and negative electrode is selected Carbon Steel Plate.
Described concrete cover 10 adopts C45 cement, and thickness is 20mm.
The described irrigation canals and ditches 2 that conflux are provided with screen cloth with the front end of flow regulation pipe 5.
The top of described slurry chamber 8 is provided with annular water distributor, and available overflow water rinses slurry chamber limit wall, and wash-down water is discharged with underflow.
Beneficial effect of the present invention is as follows:
(1) by the electric field-enhanced operating performance of hydrocyclone, can effectively remove the suspended substance (especially particle diameter soil particle less, colloidal attitude) that rainwater is carried secretly.
(2) at hydrocyclone battery lead plate skin, concrete cover is set, to guarantee the security of whole system operation.
(3) blocking the design of water bank can properly distributed rainwater, can tackle respectively the removal of the runoff rain water pollutant of large and small rainfall.
(4) make full use of the flow velocity of heavy rain, by design, make system flow by gravity, make the Energy Intensity Reduction of system itself.
(5) longer upflow tube has facilitated the layout of electrode, has also reduced the generation of the short-and-medium flow phenomenon of hydrocyclone simultaneously.
The invention solves ecosystem clarification time length, bear the defect that load is lower, not only there is good decontamination effect improving, can also well reclaim the functions such as eutrophic soil, realize the effects such as rainwater purification and soil conservation, for the pre-treatment of farmland ditch runoff provides new approaches.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric microfield hydrocyclone systems of the present invention;
Fig. 2 is the partial enlarged drawing of the irrigation canals and ditches part of confluxing of Fig. 1;
Fig. 3 is the top structure schematic diagram of electric microfield hydrocyclone systems of the present invention.
Reference numeral of the present invention is as follows:
1---water-in 2---confluxes irrigation canals and ditches
3---adapter bonnets 4---block water bank
5---flow regulation pipe 6---eddy flow working spaces
7---reverse taper pipe 8---slurry chamber
9---mud relief outlet 10---concrete cover
11---upflow tube 12---limit wall pole plate
13---central electrode 14---umbrella hood
15---steel plate 16---overflow chamber
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
This system designs according to actual farmland rainfall aggregation flow path streamflow, can reach 20000 square metres by service area.
As shown in Figure 1, the present invention is for the treatment of the electric microfield hydrocyclone systems of agricultural run-off rainwater, its water-in 1 be provided with the irrigation canals and ditches 2 that conflux above, water-in 1 is rectangular configuration, section is 30mm (wide) * 35mm (height); The front end of irrigation canals and ditches 2 of confluxing is connected with the channel of agricultural run-off rainwater, and the end of the irrigation canals and ditches 2 that conflux is connected with water-in 1 by adapter bonnet 3.The front end of adapter bonnet 3 is to be 45 ° of downward-sloping drop slopes, and drop is highly about 1.5m, described in conflux irrigation canals and ditches 2 for closed structure, at the bottom of its bottom is U-shaped canal, the rear portion at the bottom of U-shaped canal is provided with blocks water bank 4, operated by rotary motion height is 200mm; That blocks water bank 4 is provided with flow regulation pipe 5 below, and the diameter of flow regulation pipe 5 is 50mm; The discrepancy in elevation that goes up most edge and water outlet pipe duct end outlet bottom of blocking water bank 4 is 5m, to guarantee normal overflow between Irrigation Period and the pressure-losses of normal course of operation.
Described major function of blocking water bank 4 has two:
(1) for small-sized rainfall, can be directly by blocking the flow regulation pipe of laying water bank bottom, flow into slurry chamber, staticly settling the suspended matter that down in dewatering with the effect of electrostatic separation;
(2) at the heavy rain initial stage, conflux flow also hour, this part rainwater flow velocity is not enough to effectively produce hydrocyclone, can to system, carry out a certain amount of moisturizing through flow regulation pipe, makes hydrocyclone systems enter in advance full water state; When Yong Shui raise of stage, when the water yield is larger, the rainwater system of entering is carried out the eddy flow of suspended substance and is removed.
The irrigation canals and ditches 2 that conflux can arrange screen cloth with the front end of flow regulation pipe 5, as shown in Figure 2, and the various foreign material of carrying secretly in order to tackle agricultural run-off rainwater.
Water-in 1 is connected with eddy flow working spaces 6, and eddy flow working spaces 6 is for being arranged on the underground device under water-in 1 level, and its height than for 1:1, is got 250mm with diameter; Eddy flow working spaces 6 is provided with reverse taper pipe 7 below, and it is highly 300mm, and cone angle is 15 °, and underflow tap diameter is 40mm; Below reverse taper pipe 7, be provided with slurry chamber 8, slurry chamber diameter is 0.5m, is highly 1m; Slurry chamber 8 is provided with mud relief outlet 9 by another inverted pyramidal structures, and mud relief outlet 9, in normally off, stops, after for some time, opening it at heavy rain, discharges the mud liquid in slurry chamber, can be used to recharge farmland; The top of slurry chamber arranges annular water distributor, and available overflow water rinses slurry chamber limit wall, and wash-down water is discharged with underflow.The outside of described eddy flow working spaces 6, reverse taper pipe 7 and slurry chamber 8 is provided with concrete cover 10, both can play structural preservation effect, can prevent that again battery lead plate from contacting with the external world, and concrete cover adopts C45 cement, and thickness is 20mm.
Eddy flow working spaces 6 is the barrel shaped structure of steel titanium alloy, also as positive electrode plate; The central position of eddy flow working spaces 6 is provided with upflow tube 11, and upflow tube 11 is also the tubular-shaped structures of steel Carbon Steel Plate, also as negative electrode plate; The operating performance of the fortified water power that the is used for eddy flow system by electric field, effectively removes the suspended substance that rainwater is carried secretly; Voltage between the interior battery lead plate in eddy flow working spaces 6 is between 60～100v.The diameter of upflow tube 11 is 50mm, and its depth of penetration is the height of the eddy flow working spaces of 0.9 times.
Slurry chamber 8 is also the barrel shaped structure of titanium alloy, be limit wall pole plate 12, the central position of slurry chamber 8 is also provided with the central electrode 13 of Carbon Steel Plate, its inside also exists electric field to strengthen standing effect, in slurry chamber the residence time of suspended substance longer, central electrode and the interelectrode voltage of limit wall are about 50V.
The top of eddy flow working spaces 6 is provided with steel plate 15He overflow chamber 16, and as shown in Figure 3, overflow chamber 16 is connected with upflow tube 11, in order to get rid of, removes suspended substance rainwater afterwards.
Slurry chamber 8 is provided with umbrella hood 14 with the interface of reverse taper pipe 7, in order to prevent that the macrobead suspended substance that enters slurry chamber from returning and entering inward eddy under perturbation action.
Slurry chamber 8 is connected with the irrigation canals and ditches 2 that conflux by flow regulation pipe 5;
Electric microfield hydrocyclone systems of the present invention, not only can guarantee the removal of suspended substance in big or small rainfall runoff, can also play the effect of Soil conservation simultaneously.
The principle of work of electric microfield hydrocyclone systems of the present invention is as follows:
Farmland rainfall runoff tangentially enters eddy flow working spaces 6 in action of gravity, does swirling motion, and form helical flow downwards in inside, working spaces.When entering reverse taper pipe 7, eddy flow radius shrinks, and is subject to the extruding to center.The inward eddy that the eddy flow that inside is extruded can form in the same way moves upward.Externally the part fine particle of the coarse particles in runoff and colloid are subject to centrifugal action, to external migration, and flow to current downflow with outward turning, finally from underflow opening, discharge and enter slurry chamber 8; Under the effect of electric field, electrostatic force and centrifugal force act on the rate of migration that can accelerate particle and colloid in the same way, strengthening separating effect.Centrifugal force and electrostatic force that still some atomic little suspended matter is subject to are all less, in inward eddy, move upward, and by overflow port, are discharged.
Mud is the state in staticly settling in slurry chamber 8, and coarse particles can slowly sink down into slurry chamber bottom.Electric microfield effect wherein can further be collected the soil colloid in mud to assemble for larger particles to limit wall, finally with current scour, sinks to bottom.Electric microfield add the enrichment that can accelerate suspended substance in slurry chamber, avoid the disturbance at underflow opening place that mud is taken back to inward eddy.
Anode in hydrocyclone systems is selected titanium alloy, and negative electrode is selected Carbon Steel Plate.Concrete cover adopts C45 cement 20mm thick.
The external minitype gas dynamotor of cathode-anode plate in system, after rainfall starts, generator work is that pole plate applies voltage, after rainfall rests, closes generator.
This system is applicable to the agricultural run-off draining that precipitation in 20,000 square meter farmlands is no more than 30mm/h.
Claims (5)
1. the electric microfield hydrocyclone systems for the treatment of agricultural run-off rainwater, comprise water-in, eddy flow working spaces and slurry chamber, it is characterized in that, before described water-in (1), be provided with the irrigation canals and ditches that conflux (2), the end of irrigation canals and ditches (2) of confluxing is connected with water-in (1) by adapter bonnet (3), and the front end of adapter bonnet (3) is to be 45 ° of downward-sloping drop slopes; The other end of irrigation canals and ditches (2) of confluxing is connected with the channel of agricultural run-off rainwater; The described irrigation canals and ditches that conflux (2) are closed structure, and at the bottom of its bottom be U-shaped canal, the rear portion at the bottom of U-shaped canal is provided with blocks water bank (4), block water bank (4) below be provided with flow regulation pipe (5);
Being connected with eddy flow working spaces (6) below of described water-in (1), eddy flow working spaces (6) is for being arranged on the underground device under water-in (1) level, below it, be provided with reverse taper pipe (7), below reverse taper pipe (7), be provided with slurry chamber (8), slurry chamber (8) is provided with mud relief outlet (9) by another inverted pyramidal structures; The outside of described eddy flow working spaces (6), reverse taper pipe (7) and slurry chamber (8) is provided with concrete cover (10);
Eddy flow working spaces (6) is metal barrel shaped structure, also as positive electrode plate; The central position of eddy flow working spaces (6) is provided with upflow tube (11), and upflow tube (11) is also metal barrel shaped structure, also as negative electrode plate; The operating performance of the fortified water power that the is used for eddy flow system by electric field, effectively removes the suspended substance that rainwater is carried secretly;
Slurry chamber (8) is also metal barrel shaped structure, is limit wall pole plate (12), and the central position of slurry chamber (8) is also provided with central electrode (13), and its inside also exists electric field to strengthen standing effect;
The top of eddy flow working spaces (6) is provided with steel plate (15) and overflow chamber (16), and overflow chamber (16) are connected with upflow tube (11), in order to get rid of, removes suspended substance rainwater afterwards;
Slurry chamber (8) is provided with umbrella hood (14) with the interface of reverse taper pipe (7), in order to prevent that the macrobead suspended substance that enters slurry chamber from returning and entering inward eddy under perturbation action;
Slurry chamber (8) is connected with the irrigation canals and ditches that conflux (2) by flow regulation pipe (5);
The internal diameter of described eddy flow working spaces (6) is 200～300mm, and its height is 1:1 with the ratio of internal diameter; The height of reverse taper pipe (7) is 300mm, and cone angle is 15 °, and underflow tap diameter is 40mm; The diameter of upflow tube (11) is 50mm, the height of its depth of penetration Wei0.9Bei eddy flow working spaces (6); The diameter of slurry chamber (8) is 1.2 times of eddy flow working spaces (6) diameter, is highly eddy flow working spaces (6) and reverse taper pipe (7) total height 0.4～0.6 times.
2. according to the electric microfield hydrocyclone systems for the treatment of agricultural run-off rainwater of claim 1, it is characterized in that, the anode in described hydrocyclone systems is selected titanium alloy material, and negative electrode is selected Carbon Steel Plate.
3. according to the electric microfield hydrocyclone systems for the treatment of agricultural run-off rainwater of claim 1, it is characterized in that, described concrete cover (10) adopts C45 cement, and thickness is 20mm.
4. according to the electric microfield hydrocyclone systems for the treatment of agricultural run-off rainwater of claim 1, it is characterized in that, described in the conflux front end of irrigation canals and ditches (2) and flow regulation pipe (5) be provided with screen cloth.
5. according to the electric microfield hydrocyclone systems for the treatment of agricultural run-off rainwater of claim 1, it is characterized in that, the top of described slurry chamber (8) is provided with annular water distributor, and available overflow water rinses slurry chamber limit wall, and wash-down water is discharged with underflow.
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| CN201310304119.3A CN103359871B (en) | 2013-07-18 | 2013-07-18 | Micro-electric field hydrocyclone system for treatment of farmland runoff rainwater |
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| CN201310304119.3A CN103359871B (en) | 2013-07-18 | 2013-07-18 | Micro-electric field hydrocyclone system for treatment of farmland runoff rainwater |
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| CN103359871B true CN103359871B (en) | 2014-10-22 |
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| CN108522236B (en) * | 2018-06-08 | 2023-07-14 | 宁夏农林科学院固原分院 | Rain collecting and soil moisture preserving device for farmland |
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| WO2010072249A1 (en) * | 2008-12-22 | 2010-07-01 | Fredrick Marelius | A filtering device and a method of filtering a fluid |
| CN201678496U (en) * | 2010-05-07 | 2010-12-22 | 上海京瓷电子有限公司 | Electroplating waste water electrolytic tank with hydraulic cyclone separator |
| CN202144518U (en) * | 2011-06-24 | 2012-02-15 | 深圳市惠尔能科技有限公司 | Rotational flow electrolysis device |
| CN203360212U (en) * | 2013-07-18 | 2013-12-25 | 天津大学 | Micro-electric field hydrocyclone system for treating farmland runoff rain water |
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2013
- 2013-07-18 CN CN201310304119.3A patent/CN103359871B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005058847A (en) * | 2003-08-08 | 2005-03-10 | Kyoshin Kogyo Co Ltd | Foreign matter removing and purifying and sterilizing device in water or air |
| WO2010072249A1 (en) * | 2008-12-22 | 2010-07-01 | Fredrick Marelius | A filtering device and a method of filtering a fluid |
| CN101525172A (en) * | 2009-04-09 | 2009-09-09 | 无锡蓝天电子有限公司 | Water power spiral-flow type ballast water electrolysis disinfection device for ballast water monitoring system |
| CN201678496U (en) * | 2010-05-07 | 2010-12-22 | 上海京瓷电子有限公司 | Electroplating waste water electrolytic tank with hydraulic cyclone separator |
| CN202144518U (en) * | 2011-06-24 | 2012-02-15 | 深圳市惠尔能科技有限公司 | Rotational flow electrolysis device |
| CN203360212U (en) * | 2013-07-18 | 2013-12-25 | 天津大学 | Micro-electric field hydrocyclone system for treating farmland runoff rain water |
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