CN208747804U - A kind of just rain processing system - Google Patents

Abstract

The utility model relates to a kind of just rain processing system, including deslagging device, rotational flow sand sinking device and reaction settler, deslagging device, rotational flow sand sinking device are sequentially connected to reaction settler；First rain, which enters deslagging device, to carry out except Slag treatment, and it is passed through into rotational flow sand sinking device and carries out sediment by rotational flow processing, it is passed through again into reaction settler, and composite flocculation agent is added in reaction settler and forms mixed liquor, mud-water separation is carried out after being uniformly mixed to mixed liquor, sludge and clear water are obtained, and by clear water outlet, sludge outward transport is handled.The utility model can preferably remove ss suspended solid, total phosphorus TP just in the rain, COD COD and nitrogen pool TN just in the rain can be effectively reduced, and can satisfy the service requirement of intermittent duty, and starting is fast, and anti impulsion load is high.The first rain processing system of the utility model, takes up little area, and cost is relatively low, detersive efficiency is high, and plant maintenance is simple, long service life, without air blower and aerator etc., energy saving.

Description

A kind of just rain processing system

Technical field

The utility model relates to technical field of sewage more particularly to a kind of just rain processing systems.

Background technique

Currently, not yet taking the pollution of cities and towns rainwash caused by separate system initial rainwater the control of effective system Measure.City rainfall runoff is one of the main reason for causing receiving water body environmental degradation, and city rainfall runoff carries pollutant Type is more and amount is big, seriously affects receiving water body water quality, and storm runoff washes away the emphasis that pollution is water environment management for the first time. 6-8mm rainfall is carried more than 60% pollutant before research finds rainfall, and preceding 10mm rainfall carries 80% pollutant.Initial stage Rainwater pollution is more serious, but its wastewater mass concentration is higher, in different time, natural rainfall and different underlying surface pollutant Mass concentration differs greatly.Show COD, TN, TP to SS with preferable related the result of study of correlation between pollutant Property, wherein COD and SS related coefficient are up to 0.9 or more.

By construction investment limitation and there is no the actual conditions of first rain processing charging standard, and wastewater treatment in China facility is also It is opposite to lack, it is also actively working to municipal sewage treatment at present, the initial rainwater and rainy season that are more than sewage treatment plant's scale are collaborated dirty Water discharges after setting pot is handled mostly, less to pollutant removal, and only individually side starts to rainy season combined sewage It is handled.Since processing intent, the difference of Effluent criteria also have very big difference, processing in broad sense includes treatment process Dephosphorization, denitrogenation, SS, removal of organic matter etc., but since rainy season intercepting sewage is by time restriction, the number of days occurred in 1 year is not It is more, if press municipal sewage treatment the process development, there are facility utilization rates it is too low, operational management is complicated the problems such as.So general next It says, the processing of rainy season intercepting sewage is mainly based on physics, chemical method.

Utility model content

Technical problem to be solved in the utility model is in view of the above shortcomings of the prior art, to provide a kind of just rain processing System.

The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of just rain processing system, including slagging-off dress It sets, rotational flow sand sinking device and reaction settler, the deslagging device, rotational flow sand sinking device and reaction settler sequentially connect It is logical；

After first rain enters the deslagging device, the deslagging device carries out except Slag treatment first rain, and will be through by pipeline It crosses except the first rain of Slag treatment is passed through by pipeline into the rotational flow sand sinking device, the rotational flow sand sinking device revolves first rain Sand setting processing is flowed, and will be passed through by pipeline into the reaction settler by the first rain of sediment by rotational flow processing, and in institute It states and composite flocculation agent formation mixed liquor is added in reaction settler, muddy water point is carried out after being uniformly mixed to the mixed liquor From obtaining sludge and clear water, and by clear water outlet, sludge outward transport processing.

The beneficial effects of the utility model are: the first rain processing system of the utility model, can preferably remove just in the rain Ss suspended solid, total phosphorus TP, just COD COD and nitrogen pool TN in the rain can be effectively reduced, and can satisfy interval The service requirement of operation, starting is fast, and anti impulsion load is high.The first rain processing system of the utility model, takes up little area, cost is relatively low, Detersive efficiency is high, and plant maintenance is simple, long service life, without air blower and aerator etc., energy saving.

Based on the above technical solution, the utility model can also do following improvement:

Further, the deslagging device includes distributing channel, the first grid pond, water pump forebay, discharge bay and the second grid pond, The distributing channel, the first grid pond, water pump forebay, discharge bay and the second grid pond are successively disposed adjacent, the distributing channel, first Grid pond, water pump forebay, discharge bay and the second grid pond are sequentially connected to；

The coarse rack spotter is arranged outside first grid pond, and the decontamination grid of the coarse rack spotter from The upper port of first grid pond stretches in first grid pond, and the bottom of the water pump forebay is equipped with elevator pump, institute The water outlet for stating elevator pump is connected to by pipeline with the discharge bay, and fine fack spotter is equipped in second grid pond, and Second grid pond, second grid pond and the rotation are stretched out in one end that the fine fack spotter is equipped with rack upwards Flow sand-catching apparatus connection.

The beneficial effect of above-mentioned further scheme is: can tentatively be removed by first grid pond just coarseer in the rain Suspended matter, and the sundries being relatively large in diameter is intercepted, guarantee that subsequent processing facility can operate normally, and by tentatively except Slag treatment First rain enters in the water pump forebay, is transferred to discharge bay by the elevator pump, and in overflow to second grid pond, pass through Second grid pond can secondary removal just larger floating material in the rain, such as Filamentous, band-like floating material, to protect subsequent processing to set Standby normal operation.

Further, side wall of the distributing channel close to first grid pond side is equipped with and connects with first grid pond The first logical water outlet, side wall of first grid pond close to water pump forebay side is equipped with to be connected with the water pump forebay The second logical water outlet, side wall of the discharge bay close to second grid pond side is equipped with to be connected with second grid pond Logical overflow port, the side wall in second grid pond far from the discharge bay side is equipped with and the rotational flow sand sinking device connects Logical third water outlet, first water outlet, the second water outlet, overflow port and third water outlet go out be equipped be used to open or Close the valve of corresponding water stream channel.

The beneficial effect of above-mentioned further scheme is:, can be with by the setting valve at corresponding water stream channel position It is easy to open or is closed corresponding water stream channel, facilitates the water level adjusted in different device, is also convenient for each portion in system Part is overhauled, and overhaul efficiency is improved.

Further, the rotational flow sand sinking device includes the rotational flow grit chamber of hollow cylindrical, the top of the rotational flow grit chamber Wall suspension is provided with central tube up and down, and the lower end of the central tube is in inverted cone shape, the side side of the rotational flow grit chamber It is equipped with water inlet along tangential direction on wall, and enters the rotational flow grit chamber from the water inlet by the first rain except Slag treatment Eddy flow is formed along pool wall in the rotational flow grit chamber afterwards, and just gravel in the rain is settled down to the sediment by rotational flow bottom of pond portion Sand hopper in, first rain from the 4th water outlet at the top of the rotational flow grit chamber by pipeline enter the reaction settler, institute It states central tube bottom and is additionally provided at least one for turning the gravel in the sand hopper by passing through the guide shell of the central tube It moves to outside rotational flow grit chamber and mentions husky pump.

The beneficial effect of above-mentioned further scheme is: treated by will pass through deslagging device slagging-off in along The tangential direction of the rotational flow grit chamber is passed through in the rotational flow grit chamber so that just rain formed in the rotational flow grit chamber to Under eddy flow and drop to the lower end of the central tube, and upward eddy flow is formed around the central tube, in downward eddy flow Water velocity with upward eddy flow intersection is zero, and the gravel in this region can be settled down to the rotational flow grit chamber due to gravity It in the sand hopper of bottom, and is transferred to outside rotational flow grit chamber via the elevator pump, completes to handle the sand setting of first rain.

Further, the rotational flow sand sinking device further includes conducting element annular in shape, the conducting element is arranged in the eddy flow Bottom in setting pot, the outer edge of the conducting element is connect with the rotational flow grit chamber inner wall, and the outside of the conducting element Edge is higher than inward flange, and the sand pump that mentions is located in the centre bore of the conducting element.

The beneficial effect of above-mentioned further scheme is: can be settled down to institute by the conducting element in order to gravel just in the rain It states in the centre bore for smoothly entering the conducting element after sediment by rotational flow bottom of pond portion, and then turn the gravel of sedimentation convenient for elevator pump It moves to outside the hydrocyclone, so that gravel just in the rain to be kept completely separate with rainwater.

Further, the reaction settler includes reaction tank and sedimentation basin, the reaction tank is close to the sedimentation basin one The side wall of side is equipped with the first water hole being connected to the sedimentation basin；

The top of the reaction tank is equipped with the blender that is stirred to the mixed liquor, in the upper port of the sedimentation basin Equipped with supporting element, suspension is provided with mud scraper on the supporting element, and the bottom of the sedimentation basin is arranged in the lower end of the mud scraper Portion, the top of the sedimentation basin are equipped with the inclined tube that mud-water separation is carried out for the mixed liquor to entrance, setting above the inclined tube There is catch basin, for the clear water by mud-water separation from the catch basin outlet, the bottom of the sedimentation basin is equipped with bucket, and described scrapes The lower end of mud machine is located at the top of the bucket, and will be in the sludge scraping Jing Guo mud-water separation to the bucket.

The beneficial effect of above-mentioned further scheme is: first rain is in the reaction tank and the composite flocculation agent of addition by chemistry Mixed liquor is formed after reaction and enters the sedimentation basin, and mud-water separation is carried out to the mixed liquor by the inclined tube, obtains sludge And clear water, the bottom of the sludge settling to the sedimentation basin are simultaneously scraped by the mud scraper to the bucket, the clear water The catch basin outlet realizes the efficient abatement processes to first rain.

Further, the quantity of the reaction tank is multiple, and multiple reaction tanks are sequentially connected to, and are reacted described in the first order Pond is connected to by pipeline with the rotational flow sand sinking device, and reaction tank described in afterbody is connected to by pipeline with the sedimentation basin.

The beneficial effect of above-mentioned further scheme is: can make first rain and composite flocculation agent more by multiple reaction tanks Adequately reaction reaches higher clean effect convenient for the dirt of more efficient removal just in the rain.

Further, the bottom surface of the sedimentation basin is arranged to lower recess, and the edge of the sedimentation basin bottom surface is higher than bottom surface Middle position, the bucket are located at the center position of the bottom surface.

The beneficial effect of above-mentioned further scheme is: can make to settle the sludge formed by mixed liquor by this structure The mud scraper lower end is smoothly entered, and can smoothly enter into the bucket.

Further, being equipped in the sedimentation basin for the mixed liquor entered to be guided to leading for the mud scraper lower end The side in the sedimentation basin close to the reaction tank is arranged in flowing plate, the deflector.

The beneficial effect of above-mentioned further scheme is: can will enter the mixed liquor of the sedimentation basin by the deflector It is guided to the mud scraper lower end, so as to the sludge that the lower end that mixed liquor is deposited in the mud scraper is formed, and is scraped to described In bucket.

Detailed description of the invention

Fig. 1 is the deslagging device structural schematic diagram of the utility model；

Fig. 2 is the rotational flow sand sinking device structural schematic diagram of the utility model；

Fig. 3 is the reaction settler structural schematic diagram of the utility model.

In attached drawing, parts list represented by the reference numerals are as follows:

11, distributing channel, the 12, first grid pond, 13, water pump forebay, 14, discharge bay, the 15, second grid pond, 16, valve, 21, rotational flow grit chamber, 22, central tube, 23, mention husky pump, 24, conducting element, 31, reaction tank, 32, sedimentation basin；

121, coarse rack spotter, 131, elevator pump, 151, fine fack spotter, 311, blender, 321, supporting element, 322, mud scraper, 323, bucket, 324, inclined tube, 325, catch basin, 326, deflector.

Specific embodiment

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.

A kind of just rain processing system, including deslagging device, rotational flow sand sinking device and reaction settler, the slagging-off dress It sets, rotational flow sand sinking device is sequentially connected to reaction settler.

After first rain enters the deslagging device, the deslagging device carries out except Slag treatment first rain, and will be through by pipeline It crosses except the first rain of Slag treatment is passed through by pipeline into the rotational flow sand sinking device, the rotational flow sand sinking device revolves first rain Sand setting processing is flowed, and will be passed through by pipeline into the reaction settler by the first rain of sediment by rotational flow processing, and in institute It states addition composite flocculation agent in reaction settler and forms the mixed liquor, carry out mud after being uniformly mixed to the mixed liquor Water separation obtains sludge and clear water, and by clear water outlet, sludge outward transport is handled.

The first rain processing system of the utility model can preferably remove ss suspended solid, total phosphorus TP just in the rain, can be effective COD COD and nitrogen pool TN just in the rain is reduced, and can satisfy the service requirement of intermittent duty, starting is fast, resistance to Impact load is high.The first rain processing system of the utility model, takes up little area, and cost is relatively low, detersive efficiency is high, and plant maintenance is simple, Long service life, without air blower and aerator etc., energy saving.

As shown in Figure 1, the deslagging device includes distributing channel 11, the first grid in one embodiment of the utility model Pond 12, water pump forebay 13, discharge bay 14 and the second grid pond 15, the distributing channel 11, the first grid pond 12, water pump forebay 13, Discharge bay 14 and the second grid pond 15 are successively disposed adjacent, the distributing channel 11, the first grid pond 12, water pump forebay 13, water outlet Pond 14 is sequentially connected to the second grid pond 15.

The coarse rack spotter 121 is arranged outside first grid pond 12, and the coarse rack spotter 121 removes Dirty grid stretches in first grid pond 12 from the upper port of first grid pond 12, the bottom of the water pump forebay 13 Equipped with elevator pump 131, the water outlet of the elevator pump 131 is connected to by pipeline with the discharge bay 14, second grid pond Fine fack spotter 151 is equipped in 15, and the fine fack spotter 151 stretches out described second equipped with one end of rack upwards Grid pond 15, second grid pond 15 are connected to the rotational flow sand sinking device.

It is in the above-described embodiments, coarseer in the rain at the beginning of can tentatively being removed by first grid pond 12 that (diameter is greater than 20mm) suspended matter, and the sundries being relatively large in diameter is intercepted, guarantee that subsequent processing facility can operate normally, and by preliminary slagging-off The first rain of processing enters in the water pump forebay 13, is transferred to discharge bay 14 by the elevator pump 131, and overflow is to described second In grid pond 15, by second grid pond 15 can secondary removal just larger floating material in the rain, such as Filamentous, band-like floating Object, to protect the normal operation of subsequent processing device.

In practice, the coarse rack spotter can select rotary more rake grid sewage-removing machines, steel wire rope pull grid Spotter, high Chained grating cleaner and the mobile grab type grid sewage-removing machine of suspension.It is preferable to use wirerope to lead for the utility model Draw formula grid sewage-removing machine.For all motor elements of steel wire rope pull grid sewage-removing machine on the water surface, Maintenance and Repair are convenient；It adopts It is designed with large capacity, heavy load grab type tooth harrow；Grid body can right angle setting without influencing scavenging effect, it is heavy directly to excavate grid bottom Sand, elimination effect are good.Grizzly bar gap 15-20mm, crosses grid current speed 0.8-1m/s by 65-75 ° of mounted angle.

The rotary grid sewage-removing machine of tooth harrow, stairs like grate for removing solid substance, rotary drum can be selected in the fine fack spotter pattern Formula grid sewage-removing machine, Fa Jiesi F series grid sewage-removing machine and interior influent stream orifice-plate type grid sewage-removing machine.The utility model it is preferable to use Interior influent stream orifice-plate type grid sewage-removing machine, compact-sized, occupied area is few, and just rainfall is big for processing, adapts into water level fluctuation, water Head loss is small；It is high to retain the physical efficiencies such as filter residue, fiber.Aperture is 4-5mm, crosses grid water damage≤450mm, the depth of water before grid 2000mm。

Optionally, side wall of the distributing channel 11 close to 12 side of the first grid pond is equipped with and first grid Pond 12 be connected to the first water outlet, first grid pond 12 close to 13 side of water pump forebay side wall be equipped with it is described Water pump forebay 13 be connected to the second water outlet, the discharge bay 14 close to 15 side of the second grid pond side wall be equipped with The overflow port that second grid pond 15 is connected to is set on the side wall far from 14 side of discharge bay in second grid pond 15 There is the third water outlet being connected to the rotational flow sand sinking device, first water outlet, the second water outlet, overflow port and third go out The mouth of a river goes out the valve 16 for being equipped with and being used to open or close corresponding water stream channel.In the above-described embodiments, by corresponding water flow The valve 16 is set at channel position, can be convenient and open or close corresponding water stream channel, facilitates and adjusts in different device Water level, be also convenient for overhauling all parts in system, improve overhaul efficiency.

As shown in Fig. 2, the rotational flow sand sinking device includes hollow cylindrical in one embodiment of the utility model The roof suspension of rotational flow grit chamber 21, the rotational flow grit chamber 21 is provided with central tube 22 up and down, the central tube 22 Lower end be in inverted cone shape, be equipped with water inlet along tangential direction on the side side wall of the rotational flow grit chamber 21, and by slagging-off Processing first rain from the water inlet enter the rotational flow grit chamber 21 after in the rotational flow grit chamber 21 along pool wall shape At eddy flow, and just, gravel in the rain is settled down in the sand hopper of 21 bottom of rotational flow grit chamber, and first rain is from the rotational flow grit chamber 4th water outlet at 21 tops enters the reaction settler by pipeline, and 22 bottom of central tube is additionally provided at least one Sand is mentioned for the gravel in the sand hopper to be transferred to outside rotational flow grit chamber 21 by the guide shell across the central tube 22 Pump 23.

Since the lower end of the central tube 22 is set as inverted cone shape, then the downward eddy flow Xijiang River is to the central tube 22 The upward eddy flow of spiral can be formed in the periphery of the central tube 22 when lower end, then handing in downward eddy flow and upward eddy flow Water velocity is zero at boundary, influences the mud that can be settled down to 21 bottom of rotational flow grit chamber since gravel just in the rain receives gravity In bucket.

In the above-described embodiments, by that will pass through the deslagging device slagging-off, treated in along the sediment by rotational flow The tangential direction in pond 21 is passed through in the rotational flow grit chamber 21, and just gravel in the rain is settled down to 21 bottom of rotational flow grit chamber It in sand hopper, and is transferred to outside rotational flow grit chamber 21 via the elevator pump 23, completes to handle the sand setting of first rain, remove in sewage The big inorganic grit of partial size relatively large (being more than or equal to 0.1mm), protects subsequent pipeline and water treatment facilities, and reduce in sludge Sand grains.

Here, water inlet is equipped with along tangential direction on the side side wall of the rotational flow grit chamber 21 be located at pond body top, And at about 1/3 pond body height of the distance at the top of pond body, water inlet is tangent line mode of entrance, inlet velocity 1.2-1.5m/ s；The setting of 4th water outlet in round pond body Chi Ding, inflow and outflow angle can according to field condition, do 45 °, 90 °, 180 °, 270 °, 360 ° of adjustment.The connection water inlet of gravity stream pipeline, is discharged by channel overflow.Guide shell is arranged inside pond body, guide shell Pond body is divided into inside and outside two parts, outside is inhalant region, and inside is that exhalant region, inhalant region and exhalant region are connected in bottom.

Gravel due to being settled down to 21 bottom of rotational flow grit chamber is extruded consolidation, poor fluidity.It is mentioned smoothly to inhale sand Sand avoids gravel in pump and inner pipeline plug plug.It before mentioning sand, is rinsed using flushing water, fluidizes gravel sufficiently, improved Its mobility.Backwash flow is generally water 5L/s, hydraulic pressure 0.4MPa, washing time 10min.

Controlled in addition, mentioning husky pump 23 by electric cabinet, according to sand amount number, setting suitably proposes sand frequency.The sand of proposition Gravel can enter in the grit water separator with cyclone, and then realize the further separation of sand water.

Compared with traditional rotational flow grit chamber, hydraulic cyclone sand setting uses unpowered design --- cancel stirring system, entirely Portion generates vortex by the promotion of waterpower itself.Therefore, blade without mixing, gearless connection in pond, without decelerating motor, without any Moving component to the full extent simplifies equipment.In addition, the design of unique conducting element, can guide water flow formed it is longer It flows through, increases hydraulic detention time, enhance settlement action, improve sand setting effect.In addition, the hydraulic cyclone desanding device opening water surface It is smaller, it is generally used completely enclosed structure, minimizes foul smell loss, no setting is required, and complicated foul smell is collected and located Device is managed, great amount of cost is saved.

Furthermore traditional aerated grit chamber needs continuously to be aerated sewage, gravel is made to be washed, to make sand Gravel is separated with organic matter.Aeration quantity size is related with sewage quantity, and gas-water ratio is about 0.1-0.2, for Large Sewage Treatment Plant, needs It is equipped with blower, average annual power consumption is very huge.And hydraulic cyclone by cyclone technique realize silt and water separation, without to all into Water is aerated, and a large amount of energy consumptions are saved.

Optionally, in one embodiment of the utility model, the rotational flow sand sinking device further includes water conservancy diversion annular in shape The bottom in the rotational flow grit chamber 21, the outer edge of the conducting element 24 and the rotation is arranged in part 24, the conducting element 24 The connection of 21 inner wall of setting pot is flowed, and the outer edge of the conducting element 24 is higher than inward flange, and the sand pump 23 that mentions is located at described lead In the centre bore for flowing part 24.In the above-described embodiments, institute can be settled down in order to gravel just in the rain by the conducting element 24 It states in the centre bore for smoothly entering the conducting element 24 behind 21 bottom of rotational flow grit chamber, and then convenient for elevator pump 23 by sedimentation Gravel is transferred to outside the hydrocyclone 21, so that gravel just in the rain to be kept completely separate with rainwater.

As shown in figure 3, the reaction settler includes reaction tank 31 and sinks in one embodiment of the utility model Shallow lake pond 32, side wall of the reaction tank 31 close to 32 side of sedimentation basin are equipped with the first mistake being connected to the sedimentation basin 32 Water hole.

The top of the reaction tank 31 is equipped with the blender 311 being stirred to the mixed liquor, the sedimentation basin 32 Supporting element 321 is equipped in upper port, suspension is provided with mud scraper 322, the lower end of the mud scraper 322 on the supporting element 321 The bottom of the sedimentation basin 32 is set, and the top of the sedimentation basin 32 is equipped with for carrying out mud-water separation to the mixed liquor of entrance Inclined tube 324, be provided with catch basin 325 above the inclined tube 324, the clear water by mud-water separation is outside the catch basin 325 The bottom of row, the sedimentation basin 32 are equipped with bucket 323, and the lower end of the mud scraper 322 is located at the top of the bucket 323, And it will be in the sludge scraping Jing Guo mud-water separation to the bucket 323.

In practice, in order to enable the clear water on upper layer needs more smoothly from 325 outlet of catch basin in the supporting element The second water hole is set at 325 isometry position of catch basin on 321, it in this way can be in order to which upper layer clear water be in the catch basin 325 internal ratios more smoothly flow, convenient in time by upper layer clear water outlet.

In the above-described embodiments, first rain is formed after the reaction tank 31 and the composite flocculation agent after chemical reaction of addition Mixed liquor, the mixed liquor enter the sedimentation basin 32 by first water hole, fill the sedimentation basin 32 from bottom to top, And mud-water separation is carried out to the mixed liquor by the inclined tube 324, obtain sludge and clear water, the sludge settling to the precipitating The bottom in pond 32 is simultaneously scraped by the mud scraper 322 to the bucket 323, and 325 outlet of catch basin described in the clear water is realized To the efficient abatement processes of first rain.

Optionally, in one embodiment of the utility model, the quantity of the reaction tank 31 is multiple, and multiple described Reaction tank 31 is sequentially connected to, and reaction tank 31 described in the first order is connected to by pipeline with the rotational flow sand sinking device, afterbody institute Reaction tank 31 is stated to be connected to by pipeline with the sedimentation basin 32.In the above-described embodiments, can be made just by multiple reaction tanks Rain is more fully reacted with composite flocculation agent, convenient for the dirt of more efficient removal just in the rain, reaches higher decontamination effect Fruit.

In the embodiments of the present invention, reaction time is 1-3min, velocity gradient g in first order reaction tank 31 For 400-1000/s；Reaction time 2-5min, velocity gradient g 100-300/s in second level reaction tank 31.In third The residence time is 4-10min, velocity gradient g 20-60/s in order reaction pond 31.

Optionally, in one embodiment of the utility model, the bottom surface of the sedimentation basin 32 is arranged to lower recess, and institute The edge for stating 32 bottom surface of sedimentation basin is higher than bottom surface middle position, and the bucket 323 is located at the center position of the bottom surface.It is logical Cross this structure and can to settle the sludge formed by mixed liquor and smoothly enter 322 lower end of mud scraper, and smoothly into Enter in the bucket 323.

Optionally, it in one embodiment of the utility model, is equipped in the sedimentation basin 32 for described by what is entered Mixed liquor is guided to the deflector 326 of 322 lower end of mud scraper, and the setting of deflector 326 is leaned in the sedimentation basin 32 The side of the nearly reaction tank 31.In the above-described embodiments, the sedimentation basin 32 can will be entered by the deflector 326 Mixed liquor is guided to 322 lower end of mud scraper, so that mixed liquor is deposited in the sludge of the lower end formation of the mud scraper 326, And it is scraped to the bucket 323.

The design of sedimentation basin upper surface load may be up to 20-40m3/m2h, and 324 aperture of inclined tube (or inclined plate clear distance) is preferably 80mm~100mm；Inclined tube 324 (plate) length is preferably 1.0m~1.2m；Inclined tube 324 (plate) level inclination is preferably 60 °；Inclined tube 324 (plate) area top clear water zone depth of water is not preferably less than 1.0m.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (9)

1. a kind of just rain processing system, it is characterised in that: including deslagging device, rotational flow sand sinking device and reaction settler, institute State deslagging device, rotational flow sand sinking device is sequentially connected to reaction settler；

After first rain enters the deslagging device, the deslagging device carries out except Slag treatment first rain, and will be by removing by pipeline The first rain of Slag treatment is passed through by pipeline into the rotational flow sand sinking device, and it is heavy that the rotational flow sand sinking device carries out eddy flow to first rain Sand processing, and will be passed through by pipeline into the reaction settler by the first rain of sediment by rotational flow processing, and described anti- It answers and composite flocculation agent formation mixed liquor is added in settler, carry out mud-water separation after being uniformly mixed to the mixed liquor, Sludge and clear water are obtained, and by clear water outlet, sludge outward transport is handled.

2. just rain processing system according to claim 1, which is characterized in that the deslagging device include distributing channel (11), First grid pond (12), water pump forebay (13), discharge bay (14) and the second grid pond (15), the distributing channel (11), the first lattice Grid pond (12), water pump forebay (13), discharge bay (14) and the second grid pond (15) are successively disposed adjacent, the distributing channel (11), First grid pond (12), water pump forebay (13), discharge bay (14) are sequentially connected to the second grid pond (15)；

It is provided with coarse rack spotter (121) outside first grid pond (12), and coarse rack spotter (121) are removed Dirty grid stretches in first grid pond (12) from the upper port of first grid pond (12), the water pump forebay (13) Bottom be equipped with elevator pump (131), the water outlet of the elevator pump (131) is connected to by pipeline with the discharge bay (14), institute It states in the second grid pond (15) and is equipped with fine fack spotter (151), and the fine fack spotter (151) is equipped with the one of rack Second grid pond (15) is stretched out at end upwards, and second grid pond (15) is connected to the rotational flow sand sinking device.

3. just rain processing system according to claim 2, which is characterized in that the distributing channel (11) is close to first lattice The side wall of grid pond (12) side is equipped with the first water outlet being connected to first grid pond (12), first grid pond (12) side wall close to water pump forebay (13) side is equipped with the second water outlet being connected to the water pump forebay (13), institute It states the side wall of discharge bay (14) close to described second grid pond (15) side and is equipped with and be connected to second grid pond (15) Overflow port, the side wall on second grid pond (15) far from the discharge bay (14) side is equipped with and the sediment by rotational flow fills The third water outlet of connection is set, first water outlet, the second water outlet, overflow port and third water outlet, which go out, to be equipped with for beating The valve (16) of corresponding water stream channel is closed on or off.

4. just rain processing system according to claim 1, which is characterized in that the rotational flow sand sinking device includes hollow circuit cylinder The roof suspension of the rotational flow grit chamber (21) of shape, the rotational flow grit chamber (21) is provided with central tube (22) up and down, institute The lower end for stating central tube (22) is in inverted cone shape, is equipped with and intakes along tangential direction on the side side wall of the rotational flow grit chamber (21) Mouthful, and by the first rain except Slag treatment from the water inlet into after the rotational flow grit chamber (21) in the rotational flow grit chamber (21) eddy flow is formed along pool wall in, and just gravel in the rain is settled down in the sand hopper of the rotational flow grit chamber (21) bottom, just Rain enters the reaction settler, the central tube by pipeline from the 4th water outlet at the top of the rotational flow grit chamber (21) (22) bottom is additionally provided at least one for turning the gravel in the sand hopper by passing through the guide shell of the central tube (22) It moves to the sand that mentions of rotational flow grit chamber (21) outside and pumps (23).

5. just rain processing system according to claim 4, which is characterized in that the rotational flow sand sinking device further includes annular in shape Conducting element (24), the bottom that the conducting element (24) is arranged in the rotational flow grit chamber (21), the conducting element (24) Outer edge is connect with the rotational flow grit chamber (21) inner wall, and the outer edge of the conducting element (24) is higher than inward flange, and described Husky pump (23) is mentioned to be located in the centre bore of the conducting element (24).

6. just rain processing system according to claim 1, it is characterised in that: the reaction settler includes reaction tank (31) it is equipped with and the sedimentation basin with sedimentation basin (32), side wall of the reaction tank (31) close to the sedimentation basin (32) side (32) the first water hole being connected to；

The top of the reaction tank (31) is equipped with the blender (311) being stirred to the mixed liquor, the sedimentation basin (32) Upper port in be equipped with supporting element (321), suspension is provided with mud scraper (322), the mud scraper on the supporting element (321) (322) lower end setting is equipped on the bottom of the sedimentation basin (32), the top of the sedimentation basin (32) for mixing to entrance The inclined tube (324) that liquid carries out mud-water separation is closed, catch basin (325) are provided with above the inclined tube (324), by mud-water separation Clear water is from the catch basin (325) outlet, and the bottom of the sedimentation basin (32) is equipped with bucket (323), and the mud scraper (322) Lower end be located at the top of the bucket (323), and will be in the sludge scraping Jing Guo mud-water separation to the bucket (323).

7. just rain processing system according to claim 6, which is characterized in that the quantity of the reaction tank (31) be it is multiple, And multiple reaction tanks (31) are sequentially connected to, reaction tank described in the first order (31) is connected by pipeline and the rotational flow sand sinking device Logical, reaction tank described in afterbody (31) is connected to by pipeline with the sedimentation basin (32).

8. just rain processing system according to claim 6, which is characterized in that the bottom surface of the sedimentation basin (32) is to lower recess Setting, and the edge of the sedimentation basin (32) bottom surface is higher than bottom surface middle position, the bucket (323) is located at the bottom surface Center position.

9. just rain processing system according to claim 6, which is characterized in that be equipped in the sedimentation basin (32) for will be into The mixed liquor entered is guided to the deflector (326) of the mud scraper (322) lower end, and the deflector (326) is arranged in institute State the side in sedimentation basin (32) close to the reaction tank (31).