CN103359871A - 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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- CN103359871A CN103359871A CN2013103041193A CN201310304119A CN103359871A CN 103359871 A CN103359871 A CN 103359871A CN 2013103041193 A CN2013103041193 A CN 2013103041193A CN 201310304119 A CN201310304119 A CN 201310304119A CN 103359871 A CN103359871 A CN 103359871A
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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 the control of rainwater pre-treatment and water quality of river, particularly a kind of farmland rainfall runoff that compiles with face source form has particulate pollutant before entering the river course and separates and the intercepting system of soil recovery.
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.At present comparatively common farmland pollution of area source control techniques comprises wetland technology, shore bank buffer strip, the artificial pool and ecological agriculture technology etc. take ecotechnology as main.
But the Ecological Disposal technology has that floor space is large, processing efficiency is lower and the obvious defective such as load-bearing ability.Compare ecological holding back and degradation technique, the Applied Physics isolation technique has simply, rapidly and efficiently waits advantage, and the characteristics of high loading are more value in use to the rainfall runoff short period of time.There are some researches show, the suspended substance in the rainfall runoff is with in various degree negative potential, and there is positive correlation in its current potential order of magnitude and storm flow, and this explanation rainfall runoff conditions favouring is in the electric microfield strengthening effect.
Hydrocyclone is very widely two-phase or multiphase physical sepn equipment of a kind of application, is the high efficiency separation equipment that separates the 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 advantage such as automatic control, compares with other physical sepn equipment, hydrocyclone has unrivaled advantage.On the one hand, hydrocyclone has comparatively extensive and ripe application with fields such as powder processing, kaolin production, food-processing, papermaking, petroleum industries, but still is in the starting stage in the application of rainwater preprocessing technical field in mining processing industry, nonmetalliferous ore processing at present.But utilize the electric microfield strengthening effect to process the hydrocyclone systems of rainfall runoff, report was still never arranged at present.
Summary of the invention
Purpose of the present invention, long for solving the ecosystem clarification time, bear the lower defective of load; Be main characteristics for farmland ditch runoff suspended particle attitude pollutent, a kind of simple, efficient electric microfield hydrocyclone systems of 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 the agricultural run-off rainwater, comprise water-in, eddy flow working spaces and slurry chamber, it is characterized in that, the front of described water-in 1 is 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 drops 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 closed structure, and at the bottom of its bottom was U-shaped canal, the rear portion at the bottom of the U-shaped canal is provided with blocked water bank 4, block water bank 4 below be provided with flow regulation pipe 5;
The back of described water-in 1 is connected with eddy flow working spaces 6, eddy flow working spaces 6 is for being arranged on the underground device under water-in 1 level, be provided with reverse taper pipe 7 below it, be provided with slurry chamber 8 below the reverse taper pipe 7, 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 the 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 also is the 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 is effectively removed the suspended substance that rainwater is carried secretly;
The top of eddy flow working spaces 6 is provided with steel plate 15 and overflow chamber 16, and overflow chamber 16 is connected with upflow tube 11, removes suspended substance rainwater afterwards in order to get rid of;
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, and its depth of penetration is the height of 0.9 times of eddy flow working spaces 6; The diameter of slurry chamber 8 is 1.2 times of eddy flow working spaces 6 diameters, highly is eddy flow working spaces 6 and reverse taper pipe 7 total heights 0.4～0.6 times.
Anode in the 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 front end that confluxes irrigation canals and ditches 2 and flow regulation pipe 5 is provided with screen cloth.
The top of described slurry chamber 8 is provided with annular water distributor, and available overflow water washes 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 whole system Operation safety.
(3) blocking the design of water bank can the properly distributed rainwater, can tackle respectively the removal of the runoff rain water pollutant of large and small rainfall.
(4) take full advantage of the flow velocity of heavy rain, make system's flow by gravity by design, so that the Energy Intensity Reduction of system itself.
(5) long upflow tube has made things convenient for 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 lower defective of load, not only has 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.
Description of drawings
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 the 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
The invention will be further described below in conjunction with accompanying drawing.
This system designs according to actual farmland rainfall aggregation flow path streamflow, but service area reaches 20000 square metres.
As shown in Figure 1, the present invention is for the treatment of the electric microfield hydrocyclone systems of agricultural run-off rainwater, and the front of its water-in 1 is provided with the irrigation canals and ditches 2 that conflux, and water-in 1 is rectangular configuration, and 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 drops slopes, and drop highly is about 1.5m, and the described irrigation canals and ditches 2 that conflux are closed structure, and at the bottom of its bottom was U-shaped canal, the rear portion at the bottom of the U-shaped canal is provided with blocked water bank 4, and the operated by rotary motion height is 200mm; Block water bank 4 below be provided with flow regulation pipe 5, 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) can be directly flows into slurry chamber by blocking the flow regulation pipe of laying water bank bottom for small-sized rainfall, staticly settling and go down suspended matter in dewatering of the effect of electrostatic separation;
(2) conflux flow also hour at the heavy rain initial stage, this part rainwater flow velocity is not enough to effectively produce hydrocyclone, can carry out a certain amount of moisturizing to system through flow regulation pipe, makes hydrocyclone systems enter in advance full water state; When the Yong Shui raise of stage, when the water yield was larger, rainwater entered the eddy flow removal that system carries out suspended substance.
The front end of irrigation canals and ditches 2 and flow regulation pipe 5 of confluxing can arrange screen cloth, as shown in Figure 2, and the various foreign material of carrying secretly in order to tackle the 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 is 1:1 with the diameter ratio, gets 250mm; Be provided with reverse taper pipe 7 below the eddy flow working spaces 6, it highly is 300mm, and cone angle is 15 °, and underflow tap diameter is 40mm; Be provided with slurry chamber 8 below the reverse taper pipe 7, the slurry chamber diameter is 0.5m, highly is 1m; Slurry chamber 8 is provided with mud relief outlet 9 by another inverted pyramidal structures, and mud relief outlet 9 is in normally off, after heavy rain stops for some time, opens it, and discharges the mud liquid in the slurry chamber, can be used to recharge the farmland; The top of slurry chamber arranges annular water distributor, and available overflow water washes 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 the 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 also is 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 is effectively removed the suspended substance that rainwater is carried secretly; Voltage between eddy flow working spaces 6 interior battery lead plates is between 60～100v.The diameter of upflow tube 11 is 50mm, and its depth of penetration is the height of 0.9 times eddy flow working spaces.
The top of eddy flow working spaces 6 is provided with steel plate 15 and overflow chamber 16, and as shown in Figure 3, overflow chamber 16 is connected with upflow tube 11, removes suspended substance rainwater afterwards in order to get rid of.
Electric microfield hydrocyclone systems of the present invention not only can guarantee the removal of suspended substance in the 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:
The farmland rainfall runoff tangentially enters eddy flow working spaces 6 in action of gravity, does swirling motion in inside, working spaces, and forms helical flow downwards.When entering reverse taper pipe 7, the eddy flow radius shrinks, and is subject to the extruding to the center.The inward eddy that the eddy flow that inside is extruded can form in the same way moves upward.Externally the coarse particles in runoff part fine particle and colloid are subject to centrifugal action, to external migration, and flow to current downflow with outward turning, finally discharge from underflow opening 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, strengthen separating effect.Still the centrifugal force and the electrostatic force that are subject to of some atomic little suspended matter is all less, is in inward eddy and moves upward, and is discharged by overflow port.
Mud is in the state that staticly settles in slurry chamber 8, coarse particles can slowly sink down into the slurry chamber bottom.Electric microfield effect wherein can further be collected the soil colloid in the mud to assemble to the limit wall and is larger particles, finally sinks to the bottom with current scour.The adding of electric microfield can be accelerated the enrichment of suspended substance in the slurry chamber, avoids the disturbance at underflow opening place that mud is taken back inward eddy.
Anode in the 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 the system, after rainfall began, generator work was that pole plate applies voltage, after rainfall rests, closes generator.
This system is applicable to the agricultural run-off draining that precipitation in the 20000 square meter farmlands is no more than 30mm/h.
Claims (5)
1. electric microfield hydrocyclone systems for the treatment of the agricultural run-off rainwater, comprise water-in, eddy flow working spaces and slurry chamber, it is characterized in that, the front of described water-in (1) is 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 drops 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 was U-shaped canal, the rear portion at the bottom of the U-shaped canal is provided with blocked water bank (4), block water bank (4) below be provided with flow regulation pipe (5);
The back of described water-in (1) is connected with eddy flow working spaces (6), eddy flow working spaces (6) is for being arranged on the underground device under water-in (1) level, be provided with reverse taper pipe (7) below it, be provided with slurry chamber (8) below the reverse taper pipe (7), 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 the 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) also is the 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 is effectively removed the suspended substance that rainwater is carried secretly;
Slurry chamber (8) is the metal barrel shaped structure also, is limit wall pole plate (12), and the central position of slurry chamber (8) also is provided with central electrode (13), and its inside also exists electric field to leave standstill effect with reinforcement;
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), removes suspended substance rainwater afterwards in order to get rid of;
The interface of slurry chamber (8) and reverse taper pipe (7) is provided with umbrella hood (14), returns under perturbation action in order to the macrobead suspended substance that prevents from entering slurry chamber and enters inward eddy;
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, and its depth of penetration is the height of 0.9 times of eddy flow working spaces (6); The diameter of slurry chamber (8) is 1.2 times of eddy flow working spaces (6) diameter, highly is eddy flow working spaces (6) and reverse taper pipe (7) total height 0.4～0.6 times.
2. according to claim 1 the electric microfield hydrocyclone systems for the treatment of the agricultural run-off rainwater is characterized in that, the anode in the described hydrocyclone systems is selected titanium alloy material, and negative electrode is selected Carbon Steel Plate.
3. according to claim 1 the electric microfield hydrocyclone systems for the treatment of the agricultural run-off rainwater is characterized in that, described concrete cover (10) adopts C45 cement, and thickness is 20mm.
4. according to claim 1 the electric microfield hydrocyclone systems for the treatment of the agricultural run-off rainwater is characterized in that, the described irrigation canals and ditches that conflux (2) are provided with screen cloth with the front end of flow regulation pipe (5).
5. according to claim 1 the electric microfield hydrocyclone systems for the treatment of the agricultural run-off rainwater is characterized in that, the top of described slurry chamber (8) is provided with annular water distributor, and available overflow water washes 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 CN103359871B (en) | 2014-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108522236A (en) * | 2018-06-08 | 2018-09-14 | 宁夏农林科学院固原分院 | Farmland is with collecting the rain moisture device |
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| 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)
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| JP2005058847A (en) * | 2003-08-08 | 2005-03-10 | Kyoshin Kogyo Co Ltd | Foreign matter removing and purifying and sterilizing device in water or air |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108522236A (en) * | 2018-06-08 | 2018-09-14 | 宁夏农林科学院固原分院 | Farmland is with collecting the rain moisture device |
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