Hydraulic cyclone sand setting dirt separator
Technical field
The utility model relates to sewage disposal system front end pre-processing device, relate in particular to a kind of preliminary treatment that is used in town sewage, industrial wastewater, rainfall runoff and the water treatment system, can remove the sewerage integrated pre-processing device that integrates grid and setting pot of the solid dirt of the grains of sand in the sewage, inorganic foreign particle, grease and difformity and size economical and efficiently.
Background technology
At present, as sewage preliminary treatment common apparatus-grid, its work characteristics be sewage and contained solid dirt thereof all with the vertical direction grid crack in the grid of flowing through, cause the overcurrent solid dirt to stop up the grid crack easily, and be difficult to remove.If stop up dirt with the artificial removal, the amount of labour is very big; Adopt mechanical automatic pollutant removal, have mechanical breakdown to take place in the time of then, the palpus shutdown maintenance influences the normal operation of sewage treatment facility.Now commonly used and effect be setting pot preferably, as aerated grit chamber and vertical eddy flow settling pit, all needs plant equipment to keep its operation, complex structure, the operation maintenance difficulty is big, and the time have mechanical breakdown to take place, need shutdown maintenance etc.
The utility model content
The purpose of this utility model be for solve existing polluted water pretreatment apparatus complex structure, the operation maintenance difficulty is big, be prone to fault, influence the technical problem of the normal operation of equipment, a kind of simple structure is provided, move easy to be reliable, be convenient to safeguard scrubbing efficient height, and the with low cost and low hydraulic cyclone desilting dirt separator of energy consumption.
For addressing the above problem, the technical solution of the utility model is a kind of hydraulic cyclone sand setting dirt separator of structure, it comprises: the bottom is that handstand conical butt cylindrical shell and top are the circular outer cylinder of cylinder, be located at the blowoff valve and the blow-off pipe of handstand frustum of a cone cylindrical shell bottom, be installed on the cylindrical shape grid that is positioned at the conical shell top in this circular outer cylinder with one heart, be located at the effluent trough of the annular of this circular outer cylinder upper outside, be located at the outlet pipe of this effluent trough outer wall lower end.Be evenly equipped with vertical rectangle grid crack separated by a distance in length and breadth on the circumference wall body of described cylindrical shape grid, a water inlet pipe penetrates on the inwall that tangentially is connected to this cylindrical shape grid cylindrical shell from the top wall body of described effluent trough and circular outer cylinder.The top of described circular outer cylinder is provided with the undercurrent apopore of a circle and the rectangle of the equidistant laying of described effluent trough conducting and same size.
Wherein, being provided with of described grid crack can be chosen as the case may be: as handling the grid grid crack of sanitary sewage, municipal sewage, industrial wastewater and middle water: wide * high (2~3) mm * 10mm of being, each grid crack horizontal spacing is 10mm, and every row's grid crack longitudinal pitch is 10mm; Handle the grid grid crack of the dirty mixing water of rainfall runoff or combined system sewer rain: wide * height is (5~10) mm * (20~50) mm, and each grid crack horizontal spacing is 10~20mm, and every row's grid crack longitudinal pitch is 20~50mm; Handle the large cylinder-shaped grid of a large amount of rainfall runofves, the desirable bigger size in its grid crack is 20mm * 100mm as wide * height, and each grid crack horizontal spacing is 20mm, and every row's grid crack longitudinal pitch is 100mm.
The volume of the annular space between the volume of described cylindrical shape grid and its outer wall and the described circular outer cylinder inwall can equate.In order to improve the efficient of precipitation desanding and come-up oil removing, also can suitably increase the latter's volume, promptly the ratio of both volumes is 1: (1.2~2).
The height/diameter of described cylindrical shape grid is than (H/D) 〉=2.0;
The outside, bottom of described cylindrical shape grid is provided with a circle microbubble aeration tube; Described circular outer cylinder upper inside wall is provided with the scum silica frost feeder, and this scum silica frost feeder is connected with a delivery pipe with outside conducting; Described circular outer cylinder top is communicated with the undercurrent apopore of effluent trough, and its top is provided with the scum silica frost feeder, and this scum silica frost feeder is connected with a delivery pipe with outside conducting.
Be used to handle the large-scale hydraulic cyclone desilting dirt separator of rainfall runoff or the dirty mixing water of combined system sewer rain, its outer tube inner chamber tapered portion can also be provided with a cylinder screw rod lifter that is communicated with outside interim mud storage transhipment pond.
The tube structure of described circular outer cylinder is: barrel diameter 〉=2m, and cylindrical shell adopts reinforced concrete structure; Barrel diameter≤2m, cylindrical shell adopts any in fiberglass, UPVC (reinforced polyvinyl chloride) or the carbon steel material.Described cylindrical shape grid is made by stainless steel material.
The cylinder body outer wall coated antiseptic oil enamelled coating of described carbon steel circular outer cylinder, cylinder inboard wall is provided with triplex glass fiber and four layers of anticorrosive coat that epoxy resin is alternately laminated, perhaps adopts the identical or better anti-corrosion measure of effect.
The utility model is a kind of existing general grid and settling pit that be different from fully.Now general grid construction complexity has automatic pollutant removal machinery usually, and effluent stream all is perpendicular to the grid crack to flowing to identically with its contained dirt, takes place easily to stop up and be difficult to remove contamination.And the utility model simple structure, not having the machinery equipment of removing contamination, its dirt flow direction is not perpendicular to the grid crack, but does the swirling motion that is parallel to the grid crack along making cylindrical shape grid inwall, therefore should not stop up the grid crack.Because the contained solid dirt of sewage is parallel to grid crack swirling motion always, cause the solid particle littler also to be dammed to get off than grid crack, can remove the solid particle of 1-2mm as the cylinder grid of grid crack 3mm, as hair etc.Solid dirt is in case be retained down by the grid crack, just being rotated current scour very soon gets off and is sent in the current whirlpool of cylinder center, under the effect of acceleration of gravity, these are held back by the grid crack and wash away the solid dirt that gets off together with the sand grains in the sewage and other inorganic foreign particles, are sunk down into rapidly in the dirt deposition hole of grid bottom.Regularly open the blowoff valve of bottom, dirt deposition hole, the dirt of deposition is in time discharged, and disposed.
In a word, the utlity model has simple structure, no rotary machine equipment, be easy to operation and maintenance, be difficult for breaking down, and remove the efficient height of the dirt of sand grains, inorganic foreign particle, all kinds and size, advantage such as energy-saving and cost-reducing and construction and operating cost are cheap.It is applicable to the processing of sanitary sewage, municipal sewage, industrial wastewater and middle water, and the processing of the dirty combined sewage of the rain of runoff rainwater and combined system sewage treatment plant, is a kind of economy, the energy-conservation and integrated pre-processing device of grid-settling pit efficiently.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further, wherein:
Fig. 1 is the cutaway view of the utility model preferred embodiment;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the enlarged drawing at Figure 1A place;
Fig. 4 be Fig. 2 B-B to partial enlarged drawing;
Fig. 5 has installed the schematic diagram of cylinder screw rod lifter for Fig. 1;
Fig. 6 is applied to schematic diagram in the sewage disposal flow process for the utility model.
The specific embodiment
Fig. 1 and Fig. 2 show the basic structure of the utility model preferred embodiment, and described hydraulic cyclone sand setting dirt separator comprises: by circular cylinder body and be located at circular outer cylinder 1 that the handstand conical butt cylindrical shell of its underpart forms, be located at the blow-off pipe that has blowoff valve 23 of its handstand conical butt cylindrical shell bottom, be installed on one heart in this circular outer cylinder 1 inner chamber and be positioned at cylindrical shape grid 4 above the handstand conical butt cylindrical shell, be located at the annular of this circular outer cylinder external wall of upper portion effluent trough 5, be located at the outlet pipe 6 of this effluent trough outer wall lower end.The diameter of described cylindrical shape grid 4 forms the settling zone of an annular less than the diameter of circular outer cylinder 1 between two cylindrical shells.Be evenly equipped with vertical rectangle grid crack 7, one water inlet pipes 8 separated by a distance in length and breadth on the circumference wall body of cylindrical shape grid 4 and penetrate, and tangentially be connected on the inwall of these cylindrical shape grid 4 cylindrical shells from the top wall body of described effluent trough 5 and circular outer cylinder 1.The top of circular outer cylinder 1 is provided with the rectangle undercurrent apopore 12 of a circle and a plurality of same sizes of the equidistant laying of described annular effluent trough 5 conductings.The top margin of cylindrical shape grid 4 is higher than or the top margin of concordant circular outer cylinder 1, and cylindrical shape grid 4 is gone up the undercurrent apopore 12 that a circle grid crack 7 is higher than described circular outer cylinder 1 most, and described water inlet pipe 8 is installed on to be gone up under the circle grid crack 7 most.
As shown in Figure 3, present embodiment is used for sanitary sewage, municipal sewage, industrial wastewater and aquatic sewage alive reclaims again with handling) the grid grid crack 7 of handling: wide * as highly to be 3mm * 10mm, each grid crack horizontal spacing is 10mm, and every row's grid crack longitudinal pitch is 10mm.Solid dirts such as hair, fiber are removed in its requirement more effectively than common grid.In order to remove hair more effectively, the desirable littler size in grid crack: wide * height is 2mm * 10mm, and each grid crack horizontal spacing is 10mm, and every row's grid crack longitudinal pitch is 10mm.The structure in this grid crack 7 can also be selected according to different requirements with being provided with.Handle and the processing of combined system sewer combined sewage for rainfall runoff, the utility model is as removing the pretreatment unit equipment that rainfall runoff carries dirt, because it is big and many that it handles flow solid dirt big and that remove, be easy to adopt the cylindrical shape grid in big grid crack, wide * the height in grid crack is (5~10) mm * (20~50) mm, each grid crack horizontal spacing is 10mm, and every row's grid crack longitudinal pitch is 50mm.Also can suit measures to local conditions to adopt bigger grid gap size, as handle the large cylinder-shaped grid of a large amount of rainfall runofves, adopting the wide * height in grid crack is 20mm * 100mm, and each grid crack horizontal spacing is 20mm, and every row's grid crack longitudinal pitch is 100mm.
Consult Fig. 1 and Fig. 2, in order to remove the grains of sand and other solid dirt effectively, the design hydraulic detention time HRT of cylindrical shape grid 4 should be greater than 3min, the hydraulic detention time of the annular space between cylindrical shape grid and peripheral cylinder, also should 〉=3min, that is the volume of the annular space between the volume of cylindrical shape grid 4 and its outer wall and described circular outer cylinder 1 inwall equates (V substantially
Outer shroud≈ V
Interior circle), total hrt T-HRT 〉=6min in other words.In order to improve precipitation desanding and come-up oil removal efficiency, also can make interior round volume (that is the V of outer ring volume greater than cylindrical shape grid 4
Outer shroud〉=V
Interior circle), V
Outer shroud: V
Interior circleCan value be (1.2~2): 1.For the centrifugal sand setting of eddy flow more effectively with remove other solid dirts, the height/diameter of general cylindrical shape grid 4 should 〉=2.0 than (H/D).The outlet of sewer flow velocity that water inlet pipe 8 enters cylindrical shape grid inwall should produce bigger hydraulic cyclone centrifugal force so that sewage flows along barrel, and help holding back the separation of solid dirt with sewage greater than 1m/s.For large diameter hydraulic cyclone dirt separator, the H/D ratio of cylindrical shape grid 4 also can be less than 2, value 1~2.
The cylindrical shell of described circular outer cylinder 1 can adopt following material and structure, and when barrel diameter 〉=2m, cylindrical shell adopts reinforced concrete structure; And during barrel diameter≤2m, cylindrical shell also can adopt any material in fiberglass, UPVC (reinforced polyvinyl chloride) or the carbon steel material to make.When making the cylindrical shell of circular outer cylinder 1 with carbon steel, cylinder body outer wall coated antiseptic oil enamelled coating, cylinder inboard wall are provided with triplex glass fiber and four layers of anticorrosive coat (not shown) that epoxy resin is alternately laminated, perhaps adopt the identical or better anti-corrosion measure of other effects.Described cylindrical shape grid 4 is much diameters no matter, make by stainless steel material.
If (especially some industrial wastewater) contains more oil, lipid in the sewage, can also carry out the microbubble come-up and handle, in order to remove grease and scum silica frost at cylindrical shape grid 4 bottom arranged outside annular micropore aeration pipe (not shown).Simultaneously above the undercurrent apopore 12 of circular outer cylinder 1 inwall scum silica frost feeder 10 is set, this scum silica frost feeder and follows the delivery pipe 11 of outside conducting to be connected.Undercurrent apopore 12 is arranged on 30cm place, underwater, so just the grease and the scum silica frost of come-up can be dammed on the top of undercurrent apopore, and subsequently it is cast aside in the described scum silica frost feeder 10, and discharged (consulting Fig. 2 and Fig. 4) by delivery pipe 11.
Be used to handle the large-scale hydraulic cyclone sand setting dirt separator of rainfall runoff or the dirty mixing water of combined system sewer rain, for ease of fast removing the deposit dirt in the bottom handstand divergent-cone wall in the circular outer cylinder 1, can also be provided with a cylinder screw rod lifter 9 (as shown in Figure 5) that is communicated with outside interim mud storage transhipment pond 09 in circular outer cylinder 1 inner chamber tapered portion.
The utility model is a kind of integrated pre-processing device of easy grid-sand setting of removing the solid dirt plant equipment that do not have.See also Fig. 1 and Fig. 2, water inlet pipe 6 is connected on the inwall of this cylindrical shape grid with tangential way, after sewage flows into the cylindrical shape grid by its outlet, from the top down along its cylinder inner wall rotational flow, then from upwards flow through annular settling zone between cylindrical shape grid and its peripheral circular outer cylinder 1 inwall of cylindrical shape grid bottom baffling, undercurrent apopore 12 by circular outer cylinder 1 top flows into effluent trough 5 again, is discharged by outlet pipe 6 at last, enters follow-up equipment and continues to handle.In above-mentioned preprocessing process, contained sand grains and inorganic foreign particle in the sewage enters under the eddy flow action of centrifugal force in the current whirlpool at center and promptly is sunken in the dirt deposition hole of divergent-cone wall below the circular outer cylinder 1.The solid dirt that is retained down by the grid crack in cylindrical shape grid 4 is washed away down by eddy flow sewage, and in the current whirlpool that forms by hydraulic cyclone centrifugal force in the middle of entering, and sunk to forcibly in the dirt deposition hole of bottom.This hydraulic cyclone not only can be removed various solid dirts, comprises the strand shape dirt that the common grids of usefulness such as hair, fiber are difficult to remove, and can remove the grains of sand and other inorganic foreign particles efficiently.Therefore, it is the integrated pre-processing device of grid-sand setting that grid and setting pot are integrated in one.
Operation principle of the present utility model is different from general grid now, its sewage that flows into cylindrical shape grid 4 with the direction of tangent line along the inwall rotational flow, make sewage and contained solid dirt main flow thereof all be parallel to flowing of grid crack 7 along the axial work of cylindrical shell, and the solid dirt that grid crack 7 is retained down can in time be washed away by eddy flow sewage, and the centrifugal force that produces by means of hydraulic cyclone and entering in the current whirlpool at center, and under the effect of acceleration of gravity, sink down into rapidly in the dirt deposition hole of handstand divergent-cone wall below the circular outer cylinder 1.Its bottom is provided with blowoff valve 2, regularly opens blowoff valve, deposit dirt is in time got rid of by blow-off pipe 3 and is disposed.
The utlity model has purposes widely, as can be used for:
1, is used for the municipal sewage plant, replaces grid and setting pot.
2, be used for industrial effluent treatment plant, it can remove dirts such as grease in the waste water, fiber, hair efficiently, and common grid is difficult to remove them.
3, middle water treatment (sanitary sewage reclaims again with handling), it can remove dirts such as hair, fiber, grease more effectively than common grid.
4, rainfall runoff is handled and the dirty combined sewage of combined system sewer rain is handled: it can be arranged on the exit that storm sewer enters water body, also can be arranged on combined system sewerage system overflow exit, and be arranged in the combined system sewage treatment plant, in order to handle rainfall runoff, combined system sewer rainfall runoff is held back combined sewage, perhaps its rainfall runoff that dams, to remove the dirt that rainfall runoff wherein carries, as silt, leaf, grass, deadwood, rubbish such as waste plastics bag, beverage cartridge, bottle, the waste paper sheet, shred, pericarp, vegetable leaf, roots etc., this equipment can be cut down the pollution that rainfall runoff enters water body significantly in rainfall operation in period.Significantly improve the environmental sanitation of water body.This equipment is as removing the pretreatment unit equipment that rainfall runoff carries dirt.Because it is big and many that it handles flow solid dirt big and that remove, is easy to adopt the dirty grid in cylindrical shape hurdle in big grid crack.
Laying at the hydraulic cyclone dirt separator of combined system sewage treatment plant is seen shown in Figure 6.This above figure a current drainage journey be that the rainfall runoff that is used for damming rainy season is handled.During rainfall, sewage disposal in the dry season flow process below Fig. 6, or continue operation, or close out of servicely, be determined on a case-by-case basis.Arrive when dry season, be used to hold back rainwater above Fig. 6 and close, sewage disposal in the dry season flow process below only using through the handling process of stream.Flow process above Fig. 6 also can continue operation, allows its water outlet of accepting the sewage disposal system in dry season carry out tertiary treatment, makes last water outlet reach higher water standard.No matter be combined system sewage treatment plant, or separate system rainfall runoff treatment plant, most realistic feasible rainfall runoff treatment system is: hydraulic cyclone sand setting dirt separator → rainwash artificial swamp → purifying pond → water outlet is to receiving water body, and should not adopt the high load capacity biological treatment system, especially activated sludge process, because, be difficult in that organic concentration reduces significantly and the very big situation that fluctuates under normally operation.
Existing grid and settling pit have rotary machine equipment, and complex structure, operation maintenance technical difficulty are big, There was a mechanical failure easily, and shutdown maintenance happens occasionally, and affects its normal operation. And the utility model, structure Make simply, not have the plant equipment of rotation, move easyly, reliable and stable, be difficult for breaking down, can keep Long-term normal operation, and maintenance load is seldom. In addition, remove the efficient height of solid dirt, and have Capital cost, running cost is cheap and the advantage such as energy-conservation.