CN208135996U - Combined type sedimentation basin - Google Patents
Combined type sedimentation basin Download PDFInfo
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- CN208135996U CN208135996U CN201820319121.6U CN201820319121U CN208135996U CN 208135996 U CN208135996 U CN 208135996U CN 201820319121 U CN201820319121 U CN 201820319121U CN 208135996 U CN208135996 U CN 208135996U
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Abstract
The utility model relates to a kind of combined type sedimentation basin (abbreviation CST sedimentation basins), flocculation basin, transition region and sedimentation basin have been sequentially communicated by its water (flow) direction, two sections of sedimentation basin tilted plate section and sedimentation basin advection section are set in sedimentation basin, and the length of sedimentation basin tilted plate section accounts for a quarter of sedimentation basin total length, in the bottom of the sedimentation basin tilted plate section, one reflux line is set, the reflux line is by being partly refluxed in flocculation basin in sedimentation basin tilted plate section, to increase the concentration of suspension in flocculation basin, precipitating is advantageously formed.The utility model is directed to the deficiency that uses of existing single sedimentation basin, provides the combined type sedimentation basin that every technical performances such as a kind of sedimentation effect, sludge discharge effects, deposition efficiency and precipitating water cleannes are superior to single sedimentation basin.
Description
Technical field
The utility model relates to water treatment technology fields, and in particular to a kind of combined type sedimentation basin.
Background technique
Currently, the conventional sedimentation basin for water process mainly has horizontal sedimentation tank, inclined tube (plate) sedimentation basin and high density heavy
Shallow lake pond etc..Wherein horizontal sedimentation tank because its low cost, construction is simple, convenient for management, treatment effect stablize be widely used in it is big,
Medium-sized water factory, however the technique has the following disadvantages：
1, raw water biggish for silt content generates different heavy since top and the bottom water body density contrast is larger in horizontal sedimentation tank
Stream, lower layer's flow velocity is larger, causes to float once again after precipitating floccule body to end walls, and sediment upturning phenomenon occurs, and alumen ustum is taken in water outlet out of,
Influence water quality；
2, for low turbidity raw water, uniformly tiny colloidal impurity is dispersed in water, have very strong aggregation stability and
Dynamic stability, floccule body are few, thin, light, it is difficult to form big alumen ustum precipitating, and readily penetrate through filtering ponds filtering layer, thus shadow
Ring effluent quality.
For above insufficient, although sediment upturning phenomenon can be effectively relieved in inclined-tube sedimentation tank, deposition efficiency is improved, it is turbid to raw water
The adaptation for spending variation is poor, and effluent quality is unstable, and especially the processing of low turbidity water, effluent quality are worse；In addition, high density
Sedimentation basin has the advantage that treatment effeciency is high, specific yield is big, adaptable, but its mechanical equipment is more, and energy consumption is high, operation
Complex management, cost of investment are higher.Therefore, the sedimentation basin of existing mainstream cannot all overcome the problems, such as above-mentioned simultaneously, using all
There are limitations, so a kind of combined type sedimentation basin is designed to solve deficiency existing for existing single sedimentation basin be this field one
Important task.
Utility model content
In order to solve the above technical problems, the utility model is directed to the advantage and disadvantage of each sedimentation basin, a kind of sedimentation effect, row are provided
Every technical performances such as mud effect, deposition efficiency and precipitating water cleannes are superior to the combined type sedimentation basin of single sedimentation basin.
The utility model designs a kind of combined type sedimentation basin, and specially sludge return type inclined plate-advection combines sedimentation basin
(A sloping plate-horizontal flow combined sedimentation tank with sludge
Return), referred to as " CST sedimentation basin ", specific structure is：
A kind of combined type sedimentation basin (hereinafter referred to as CST sedimentation basin), water flow enter flocculation basin by water inlet pipe, complete flocculation
Enter transition region after process, water body precipitates in transition region, and a part of silt is discharged by drain pipe, another part silt and water
Stream enters back into sedimentation basin together；Sedimentation basin tilted plate section and sedimentation basin advection section two parts, sedimentation basin are set by sedimentation basin
The leading portion of entire sedimentation basin is arranged in tilted plate section, this is primarily to collect great quantity of floc, in order to flow back, in sedimentation basin inclined plate
Inclined plate is arranged in section lateral flow, and several buckets are arranged below inclined plate and receive mud pipe, to collect the larger floc sludge of rapid precipitation,
Reflux line is set receiving at the mud mouth after mud, the other end of reflux line is connect with water inlet pipe, such sedimentation basin inclined plate
The floc sludge that section is collected just is back in flocculation basin, and the water to improve flocculating effect, and in sedimentation basin tilted plate section enters heavy
It is discharged outside pond after shallow lake pond advection section precipitating by header tank.
In above scheme, when the length of sedimentation basin tilted plate section is a quarter of sedimentation basin total length, deposition efficiency is most
Height collects the biggish wadding body reflux of concentration of leading portion, increases water inlet concentration of suspension, reach optimal reflowing result.
In above scheme, the sludge part that sedimentation basin tilted plate section is collected is back to flocculation basin, and reflux ratio should be according to raw water
Turbidity variation is adjusted, and under normal circumstances about 10%, the mixed water turbidity that flows back, which is maintained at 300NTU or so, to be advisable,
Adsorption bridging effect can be just given full play in this way, is precipitated, and reached and saved medicine consumption, improve the purpose of mud-water separation effect, remain
Remaining sludge is drained together with sedimentation basin advection section sludge.
In above scheme, sedimentation basin advection section continues to use traditional mode, and tail end is arranged finger-type catch basin, it is turbid to raw water to play it
Adaptable advantage is spent, guarantees effluent quality.
Compared with prior art, the utility model proposes a kind of CST sedimentation basin, single sedimentation basin is compensated in use
Deficiency solves sediment upturning phenomenon, improve to raw water turbidity variation adaptability, stablize effluent quality, and cost of investment it is lower,
Operational administrative is easier, not only can apply to the construction of new pond, but also can apply to old pond transformation, and expense is lower, be in particular in
Under several aspects：
1, it in sedimentation basin tilted plate section, is laid with inclined plate and improves deposition efficiency, largely compared with big flocculating body rapid precipitation, small part is heavy
It forms sediment and enters subsequent sedimentation basin advection section, reduce the density contrast of top and the bottom water body, improve significantly to sediment upturning phenomenon；
2, the partial sludge reflux of sedimentation basin tilted plate section, increases the concentration of suspension in flocculation basin, is conducive to colloid
Grain is de- steady, forms precipitating, for low turbid raw water, effect is particularly evident；Meanwhile it containing a certain amount of coagulant and being helped solidifying in sludge
Agent can reduce the 50% of overall pharmaceutical use；
3, horizontal sedimentation tank is remained to the buffer function of change of water quality in sedimentation basin advection section, settling system has good
Steady production ability；
4, the utility model combines horizontal sedimentation tank stable water outlet and the high-efficient advantage of inclined-plate clarifying basin flocculation sedimentation,
And return-flow system is increased, coagulating sedimentation effect is improved, sedimentation basin delivery turbidity can be down to the left side 5NTU by 10NTU or so
It is right.
5, potassium permanganate composites are compared, CST sedimentation basin of the invention can be applied in combination with any form of flocculation basin, have
Have convenient, flexible, mechanical equipment is less, and operational administrative is easier, the lower advantage of cost of investment.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of combined type sedimentation basin of the utility model.
Fig. 2 is a kind of plan view of combined type sedimentation basin of the utility model.
As shown in the figure：1- flocculation basin, 2- transition region, 3- sedimentation basin, 3.1- sedimentation basin tilted plate section, 3.1a- inclined plate, 3.1b-
Bucket, 3.1c- receive mud pipe, 3.2- sedimentation basin advection section, 4- perforation tracery wall, 5- reflux line, 6- water inlet pipe, 7- slush pump, 8-
Scraping and sucking machine, 9- catch basin, 10- drain pipe.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
The utility model is further described in embodiment.It is understood that specific embodiment described herein is only to solve
The utility model is released, is not used to limit the utility model.
As shown in Figs. 1-2, the utility model provides a kind of combined type sedimentation basin (hereinafter referred to as CST sedimentation basin), including presses
Flocculation basin 1, transition region 2 and the sedimentation basin 3 that its water (flow) direction is sequentially communicated, the sedimentation basin 3 be by sedimentation basin tilted plate section 3.1 and
3.2 two sections of sedimentation basin advection section compositions, the sedimentation basin tilted plate section 3.1 setting transition region 2 and sedimentation basin advection section 3.2 it
Between, and its both ends is communicated with transition region 2 and sedimentation basin advection section 3.2 respectively by tracery wall 4 of perforating, in the sedimentation basin inclined plate
A reflux line 5 is arranged in the bottom of section 3.1, and one end of the reflux line 5 is connect with the mud discharging mouth of sedimentation basin tilted plate section 3.1,
The other end of the reflux line 5 is connected with water inlet pipe 6.
Further, the length of sedimentation basin tilted plate section 3.1 is set to a quarter of 3 total length of sedimentation basin, at this time
Deposition efficiency highest collects the biggish wadding body reflux of concentration of leading portion, increases water inlet concentration of suspension, can be only achieved optimal time
Flow effect.
Further, lateral flow is equipped with inclined plate 3.1a, the lower section of the inclined plate 3.1a in the sedimentation basin tilted plate section 3.1
It being provided with several bucket 3.1b and receives mud pipe 3.1c, the mud mouth for receiving mud pipe 3.1c is connected with the import of reflux line 5,
It is provided with slush pump 7 on reflux line 5, the sludge part in sedimentation basin tilted plate section 3.1 is back in flocculation basin.
Further, being equipped in the sedimentation basin advection section 3.2 can move along 3.2 length direction of sedimentation basin advection section
Scraping and sucking machine 8, the scraping and sucking machine 8 are running vehicle type scraping and sucking machine, and catch basin 9, the collection are equipped in sedimentation basin advection section 3.2
Sink 9 is connected with the water outlet of sedimentation basin advection section 3.2.
Further, the bottom of the transition region 2 is additionally provided with drain pipe 10, the flocculation basin 1 be iris type flocculation basin,
Folded plate type flocculation basin, grid type flocculation basin or mechanical flocculation basin.
When specific effect, flocculation basin 1 is entered by water inlet pipe 6 after raw water dosing, transition region is entered after flocculation process
2, it is discharged by drain pipe 10 after the sand sedimentation in transition region 2 in a large amount of raw waters, water flow is by perforation 4 water distribution uniformity of tracery wall
Enter sedimentation basin tilted plate section 3.1 afterwards, lateral flow is laid with inclined plate 3.1a in sedimentation basin tilted plate section 3.1, sets below inclined plate 3.1a
It sets bucket 3.1b and receives mud pipe 3.1c, to collect the larger floc sludge of rapid precipitation, and the sludge of collection is passed through into return pipe
Road 5 is partly refluxed in flocculation basin 1, remaining sludge is drained together with the sludge of sedimentation basin advection section 3.2.
It by the sludge main component of 5 refluxing portion of reflux line is high concentration coagulation wadding body in the scheme of the present embodiment,
It is free of sand grains, and being back to flocculation basin 1 can increase the concentration of suspended matter in flocculation basin 1, gives full play to adsorption bridging effect, can have
Effect improves the flocculating effect of low turbidity raw water；Contain a certain amount of coagulant and flocculation aid in sludge simultaneously, can thus subtract
The usage amount of small totality medicament.
Reflux line 5 is set in 3.1 bottom of sedimentation basin tilted plate section in the present embodiment, reflux ratio changes according to raw water turbidity
It is adjusted, so that the mixed water turbidity that flows back is maintained at 300NTU or so and is advisable, the water of sedimentation basin tilted plate section 3.1 is flowed through
Tracery wall 4 of perforating enters in sedimentation basin advection section 3.2, which continues to use traditional advection sedimentation pool mode, is arranged using scraping and sucking machine 8
Finger-type catch basin 10 is arranged in the tail end of sedimentation basin advection section 3.2 in mud, and by treated, water is collected and by outlet row
Out.
The length of CST sedimentation basin provided in this embodiment, the sedimentation basin tilted plate section 3.1 in sedimentation basin 3 accounts for sedimentation basin overall length
The a quarter of degree, the total hrt of sedimentation basin 3 are 1.5~2 hours, the flow rate of water flow in sedimentation basin tilted plate section 3.1
For 13~20mm/s, the flow rate of water flow in sedimentation basin advection section 3.2 is 10~17mm/s, the pond depth of entire sedimentation basin 3 is 3.5~
4.0m, inclined plate 1.4~1.6m of 3.1a high, the inclination angle inclined plate 3.1a are 60 °, and the gap of inclined plate 3.1a is 5~10cm.
When flow of inlet water is 1500m3/h, residence time 2h, pond depth is 4m, when influent turbidity is 65NTU, by this reality
Apply example offer CST sedimentation basin treated delivery turbidity can be stably held in 3NTU hereinafter, much than single sedimentation basin at
Reason effect will be got well.
It should be understood that the part not illustrated in specification is the prior art or common knowledge.The present embodiment is only used
In illustrating the utility model, rather than limitation the scope of the utility model, those skilled in the art are for the utility model institute
The modifications such as the equivalent replacement made are deemed to fall in the utility model claims book institute protection scope.
Claims (8)
1. a kind of combined type sedimentation basin, including flocculation basin (1), transition region (2) and the sedimentation basin being sequentially communicated by its water (flow) direction
(3), it is characterised in that：The sedimentation basin (3) is by sedimentation basin tilted plate section (3.1) interconnected and sedimentation basin advection section
(3.2) two sections of compositions, the sedimentation basin tilted plate section (3.1) are arranged between transition region (2) and sedimentation basin advection section (3.2), and
And its both ends is communicated with transition region (2) and sedimentation basin advection section (3.2) respectively by perforation tracery wall (4), it is oblique in the sedimentation basin
A reflux line (5) are arranged in the bottom of plate section (3.1), one end of the reflux line (5) and the row of sedimentation basin tilted plate section (3.1)
The connection of mud mouth, the other end of the reflux line (5) are connected with water inlet pipe (6).
2. a kind of combined type sedimentation basin according to claim 1, it is characterised in that：The sedimentation basin tilted plate section (3.1)
Length is a quarter of sedimentation basin (3) total length.
3. a kind of combined type sedimentation basin according to claim 2, it is characterised in that：In the sedimentation basin tilted plate section (3.1)
Lateral flow is equipped with inclined plate (3.1a), and several buckets (3.1b) are provided with below the inclined plate (3.1a) and receive mud pipe
(3.1c), the mud mouth for receiving mud pipe (3.1c) are connected with the import of reflux line (5).
4. a kind of combined type sedimentation basin according to claim 3, it is characterised in that：It is provided on the reflux line (5)
Slush pump (7).
5. a kind of combined type sedimentation basin according to claim 1, it is characterised in that：In the sedimentation basin advection section (3.2)
Equipped with scraping and sucking machine (8) that can be mobile along sedimentation basin advection section (3.2) length direction, the scraping and sucking machine (8) is running vehicle type
Scraping and sucking machine.
6. a kind of combined type sedimentation basin according to claim 5, it is characterised in that：In the sedimentation basin advection section (3.2)
Equipped with catch basin (9), the catch basin (9) is connected with the water outlet of sedimentation basin advection section (3.2).
7. a kind of combined type sedimentation basin according to claim 1, it is characterised in that：The bottom of the transition region (2) is also set
It is equipped with drain pipe (10).
8. a kind of combined type sedimentation basin according to claim 1, it is characterised in that：The flocculation basin (1) is iris type wadding
Solidifying pond, folded plate type flocculation basin, grid type flocculation basin or mechanical flocculation basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820319121.6U CN208135996U (en) | 2018-03-08 | 2018-03-08 | Combined type sedimentation basin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820319121.6U CN208135996U (en) | 2018-03-08 | 2018-03-08 | Combined type sedimentation basin |
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| Publication Number | Publication Date |
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| CN208135996U true CN208135996U (en) | 2018-11-23 |
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ID=64289348
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| CN201820319121.6U Active CN208135996U (en) | 2018-03-08 | 2018-03-08 | Combined type sedimentation basin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423868A (en) * | 2018-03-08 | 2018-08-21 | 中国市政工程中南设计研究总院有限公司 | Combined type sedimentation basin |
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- 2018-03-08 CN CN201820319121.6U patent/CN208135996U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423868A (en) * | 2018-03-08 | 2018-08-21 | 中国市政工程中南设计研究总院有限公司 | Combined type sedimentation basin |
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