CN102430272A - Method for treating sandstone wastewater - Google Patents
Method for treating sandstone wastewater Download PDFInfo
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- CN102430272A CN102430272A CN2011103335874A CN201110333587A CN102430272A CN 102430272 A CN102430272 A CN 102430272A CN 2011103335874 A CN2011103335874 A CN 2011103335874A CN 201110333587 A CN201110333587 A CN 201110333587A CN 102430272 A CN102430272 A CN 102430272A
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- sandstone
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Abstract
The invention discloses a method for treating sandstone wastewater, which is favorable for preventing blockage of a horizontal flow type sedimentation tank sandstone discharge system. The method mainly comprises the following steps of: firstly, dividing a drainage region at the bottom of a horizontal flow type sedimentation tank into two drainage regions according to the horizontal flow direction of water in the horizontal flow type sedimentation tank in sequence; then, connecting respective sandstone discharge systems for the two drainage regions respectively; and then, discharging sandstones in the two drainage regions to the exterior of the horizontal flow type sedimentation tank through the respective sandstone discharge systems respectively. By using the method provided by the invention, occurrence of a hardening phenomenon can be effectively avoided, the blockage of the horizontal flow type sedimentation tank sandstone discharge system can be favorably avoided, and long-term stable operation of the horizontal flow type sedimentation tank is guaranteed.
Description
Technical field
The present invention relates to the method that is used to handle sandstone waste water that a kind of water power construction field is used.
Background technology
At present; At the water power construction field; Often need handle the waste water that contains a large amount of sandstones, the gravel content in this waste water is generally at 10000mg/L to 130000mg/L, and the particle diameter of sandstone is generally below 100 μ m; Especially concentrate in 50 μ m to 100 mu m ranges, and in the scope below the 10 μ m.Will use rectangular sedimentation tank when generally this waste water initial stage of carrying out being handled, the pond type of rectangular sedimentation tank generally is rectangle, and waste water flows into from an end in pond; Horizontal direction flows through the pond, and the other end outflow from the pond is provided with sludge discharging area in the bottom in pond; Be provided with a plurality of buckets in the sludge discharging area; The bottom of each bucket is connected with blow down branch, and each blow down branch links to each other with same set of sandstone exhaust system, through the regular or lasting discharging sandstone of sandstone exhaust system.There is following deficiency in use in the rectangular sedimentation tank of said structure: above-mentioned sandstone exhaust system is often stopped up by sandstone; Cause the sandstone in the rectangular sedimentation tank in time not discharge; Influence the normal use of rectangular sedimentation tank, even cause the paralysis of whole Waste Water Treatment, and when exhaust system being cleared up at every turn; All need consume a large amount of manpower and materials; And need whole being used for shut down to the system that waste water is handled, influence normally carrying out of wastewater treatment, have greater environmental impacts.
Summary of the invention
The technical problem that the present invention solves provides a kind of method that is used to handle sandstone waste water that rectangular sedimentation tank sandstone exhaust system stops up that helps avoiding.
The technical solution adopted for the present invention to solve the technical problems is: be used to handle the method for sandstone waste water, comprise rectangular sedimentation tank, said rectangular sedimentation tank is provided with delivery port; Bottom at rectangular sedimentation tank is provided with sludge discharging area; Be provided with a plurality of buckets in the said sludge discharging area, the bottom of each bucket is connected with blow down branch, and the sludge discharging area of rectangular sedimentation tank bottom is divided into grit sludge discharging area and grail sludge discharging area successively by the advection direction of the water in the rectangular sedimentation tank; Wherein, Along the advection direction of water, the length of said rectangular sedimentation tank is controlled at 9m to 11m, and the length ratio of said grit sludge discharging area and grail sludge discharging area is 1: 2; Built in 0.003m/s to 0.004m/s, the depth of water is controlled at 0.9m to 1.2m with the horizontal flow speed control in the rectangular sedimentation tank; The blow down branch that each bucket in the grit sludge discharging area connects forms the grit blow down branch; Each grit blow down branch is linked to each other with the grit exhaust system, the sandstone in the grit sludge discharging area is discharged through each grit blow down branch and grit exhaust system; The blow down branch that each bucket in the grail sludge discharging area connects forms the grail blow down branch; Each grail blow down branch is linked to each other with the grail exhaust system, the sandstone in the grail sludge discharging area is discharged through each grail blow down branch and grail exhaust system.
Further be: the water that the delivery port of rectangular sedimentation tank is flowed out enters in the flocculation tank that is added with flocculant, then the water in the flocculation tank is entered flocculation sedimentation tank.
Further be: the sandstone that the grit exhaust system is discharged enters the grit mud-collecting well, and the sandstone that the grail exhaust system is discharged enters the grail mud-collecting well.
Further be: the sandstone in sandstone in the grit mud-collecting well and the grail mud-collecting well is entered the sandstone dewater unit respectively dewater.
The invention has the beneficial effects as follows: through deep the discovering of long-term system; The reason that causes exhaust system often to stop up is that grit and the grail in the rectangular sedimentation tank discharges through same set of exhaust system simultaneously; Grail and grit interact and occur the serious phenomenon that hardens down, and sandstone caking hardening just is difficult to from exhaust system, remove; When the phenomenon that hardens was relatively more serious, exhaust system can be blocked.And the present invention is through dividing the sludge discharging area of rectangular sedimentation tank bottom; Form two sludge discharging area, be respectively grit sludge discharging area and grail sludge discharging area, can the sandstone of the variable grain degree exhaust system through separately be discharged like this; Can reduce the interactional probability of grail and grit; And then reduce the probability that the phenomenon that hardens occurs, and therefore help avoiding the sandstone exhaust system of rectangular sedimentation tank to stop up, help guaranteeing the long-term normal running of rectangular sedimentation tank.
Description of drawings
Fig. 1 is the sketch map of the rectangular sedimentation tank that is used to handle sandstone waste water of the present invention, flocculation tank, flocculation sedimentation tank.
Be labeled as among the figure: grit blow down branch 9, grail blow down branch 10, delivery port 11, grit sludge discharging area 12; Grail sludge discharging area 13, grit exhaust system 15, grail exhaust system 16; Grit mud-collecting well 17, grail mud-collecting well 18, rectangular sedimentation tank 19; Flocculation tank 23, flocculation sedimentation tank 32, sandstone dewater unit 41.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further specified.
As shown in Figure 1, the method that is used to handle sandstone waste water of the present invention comprises rectangular sedimentation tank 19; Said rectangular sedimentation tank 19 is provided with delivery port 11, is provided with sludge discharging area in the bottom of rectangular sedimentation tank 19, is provided with a plurality of buckets in the said sludge discharging area; The bottom of each bucket is connected with blow down branch; The sludge discharging area of rectangular sedimentation tank 19 bottoms is divided into grit sludge discharging area 12 and grail sludge discharging area 13 successively by the advection direction of the water in the rectangular sedimentation tank, wherein, along the advection direction of water; The length of said rectangular sedimentation tank 19 is controlled at 9m to 11m, and the length ratio of said grit sludge discharging area 12 and grail sludge discharging area 13 is 1: 2; Built in 0.003m/s to 0.004m/s, the depth of water is controlled at 0.9m to 1.2m with the horizontal flow speed control in the rectangular sedimentation tank 19; The blow down branch that each bucket in the grit sludge discharging area 12 connects forms grit blow down branch 9; Each grit blow down branch 9 is linked to each other with grit exhaust system 15, the sandstone in the grit sludge discharging area 12 is discharged through each grit blow down branch 9 and grit exhaust system 15; The blow down branch that each bucket in the grail sludge discharging area 13 connects forms grail blow down branch 10; Each grail blow down branch 10 is linked to each other with grail exhaust system 16, the sandstone in the grail sludge discharging area 13 is discharged through each grail blow down branch 10 and grail exhaust system 16.
The advection direction of above-mentioned water, the direction of water when bottom horizontal flow sheet just, shown in the arrow in the rectangular sedimentation tank among Fig. 1 19, the just horizontal flow velocity of the flow velocity of the advection direction of water.Above-mentioned grit exhaust system can comprise many pipelines and control corresponding valve, and above-mentioned grail exhaust system also can comprise many pipelines and control corresponding valve.
Through the discovery that studies for a long period of time; The reason that causes exhaust system often to stop up is that grit and the grail in the rectangular sedimentation tank discharges through same set of exhaust system simultaneously, and grail and grit interact and the serious phenomenon that hardens occurs, and just on the tube wall of exhaust system, lump; Thereby reduced effective blowdown space of pipeline; Finally make line clogging, this phenomenon mainly be since grail and grit in moving process, grail can be filled the slit between the grit gradually; Make grit be difficult for move, grit is difficult for moving moving of the grail that also can hinder in the slit.Find also that through research the probability of phenomena that hardens of interacting between the above particle of 50 μ m and the particle below the 50 μ m is bigger, if the particle classification is discharged, then can effectively reduce the probability of the phenomenon generation of hardening.The present invention just is being based on this thought; Length through control rectangular sedimentation tank 19; The length ratio of grit sludge discharging area 12 and grail sludge discharging area 13; Parameters such as the horizontal flow velocity and the depth of water are carried out the subregion deposition with the sandstone in the waste water according to the size of particle diameter, and the particle diameter in the above-mentioned grit sludge discharging area 12 main collection waste water is at the above sandstone particle of 50 μ m, and grail sludge discharging area 13 is mainly collected the sandstone particles of particle diameter below 50 μ m in the waste water; In the method for the present invention, grit sludge discharging area 12 reaches more than 95% for the clearance of the above sandstone particle of 50 μ m in the waste water.Therefore; Through method of the present invention, can sandstone be collected classification discharging then according to particle size classification; This discharging modes can effectively reduce the occurrence probability of the phenomenon that hardens; Make sandstone therefore help avoiding the sandstone exhaust system of rectangular sedimentation tank to stop up, help guaranteeing the long-term normal running of rectangular sedimentation tank smoothly through the pipeline of respective row place system.Find that through practical application adopt method of the present invention, grit exhaust system and grail exhaust system can not stop up basically.
For the water that further rectangular sedimentation tank is flowed out purifies; On the basis of the above; Also comprise flocculation tank 23 and flocculation sedimentation tank 32; The water that the delivery port of said rectangular sedimentation tank 19 11 is flowed out enters in the flocculation tank 23 that is added with flocculant, then the water in the flocculation tank 23 is entered flocculation sedimentation tank 32.The water that flows out from flocculation sedimentation tank 32 can directly be discharged into the external environment, and environment does not pollute to external world.Adopt said structure, just whole sandstone Waste Water Treatment comprises rectangular sedimentation tank, flocculation tank and flocculation sedimentation tank; The sandstone Waste Water Treatment of this structure is simple in structure, easy to operate, and floor space is little; Use cost is low, and applicability is comparatively extensive.
On the basis of the above, for the ease of the sandstone that gives off is reclaimed, the sandstone that grit exhaust system 15 is discharged enters grit mud-collecting well 17, and the sandstone that grail exhaust system 16 is discharged enters grail mud-collecting well 18.Can sandstone be concentrated recovery through mud-collecting well.Further be, can the sandstone in sandstone in the grit mud-collecting well 17 and the grail mud-collecting well 18 be entered sandstone dewater unit 41 respectively and dewater for the ease of the sandstone after reclaiming is transported.Sandstone dewater unit 41 can be devices such as centrifugal dehumidifier or filter press.Sandstone through after the dehydration is convenient to transport through transport vehicle.
Embodiment:
As shown in Figure 1, the method that is used to handle sandstone waste water of the present invention comprises rectangular sedimentation tank 19; Said rectangular sedimentation tank 19 is provided with delivery port 11, is provided with sludge discharging area in the bottom of rectangular sedimentation tank 19, is provided with a plurality of buckets in the said sludge discharging area; The bottom of each bucket is connected with blow down branch, the sludge discharging area of rectangular sedimentation tank 19 bottoms is divided into grit sludge discharging area 12 and grail sludge discharging area 13 successively by the advection direction of the water in the rectangular sedimentation tank, wherein; The width of rectangular sedimentation tank 19 is 1m; Along the advection direction of water, the length of said rectangular sedimentation tank 19 is 9.9m, and the length ratio of said grit sludge discharging area 12 and grail sludge discharging area 13 is 1: 2; Just the length of grit sludge discharging area 12 is 3.3m, and the length of grail sludge discharging area 13 is 6.6m; Built in 0.0036m/s, the depth of water is controlled at 1m with the horizontal flow speed control in the rectangular sedimentation tank 19; The blow down branch that each bucket in the grit sludge discharging area 12 connects forms grit blow down branch 9; Each grit blow down branch 9 is linked to each other with grit exhaust system 15, the sandstone in the grit sludge discharging area 12 is discharged through each grit blow down branch 9 and grit exhaust system 15; The blow down branch that each bucket in the grail sludge discharging area 13 connects forms grail blow down branch 10; Each grail blow down branch 10 is linked to each other with grail exhaust system 16, the sandstone in the grail sludge discharging area 13 is discharged through each grail blow down branch 10 and grail exhaust system 16.
Claims (4)
1. be used to handle the method for sandstone waste water; Comprise rectangular sedimentation tank (19); Said rectangular sedimentation tank (19) is provided with delivery port (11), is provided with sludge discharging area in the bottom of rectangular sedimentation tank (19), is provided with a plurality of buckets in the said sludge discharging area; The bottom of each bucket is connected with blow down branch, it is characterized in that:
The sludge discharging area of rectangular sedimentation tank (19) bottom is divided into grit sludge discharging area (12) and grail sludge discharging area (13) successively by the advection direction of the water in the rectangular sedimentation tank; Wherein, Advection direction along water; The length of said rectangular sedimentation tank (19) is controlled at 9m to 11m, and the length ratio of said grit sludge discharging area (12) and grail sludge discharging area (13) is 1: 2;
Built in 0.003m/s to 0.004m/s, the depth of water is controlled at 0.9m to 1.2m with the horizontal flow speed control in the rectangular sedimentation tank (19);
The blow down branch that each bucket in the grit sludge discharging area (12) connects forms grit blow down branch (9); Each grit blow down branch (9) is linked to each other with grit exhaust system (15), the sandstone in the grit sludge discharging area (12) is discharged through each grit blow down branch (9) and grit exhaust system (15);
The blow down branch that each bucket in the grail sludge discharging area (13) connects forms grail blow down branch (10); Each grail blow down branch (10) is linked to each other with grail exhaust system (16), the sandstone in the grail sludge discharging area (13) is discharged through each grail blow down branch (10) and grail exhaust system (16).
2. the method that is used to handle sandstone waste water as claimed in claim 1; It is characterized in that: the water that the delivery port (11) of rectangular sedimentation tank (19) is flowed out enters in the flocculation tank (23) that is added with flocculant, then the water in the flocculation tank (23) is entered flocculation sedimentation tank (32).
3. the method that is used to handle sandstone waste water as claimed in claim 1 is characterized in that: the sandstone that grit exhaust system (15) is discharged enters grit mud-collecting well (17), and the sandstone that grail exhaust system (16) is discharged enters grail mud-collecting well (18).
4. the method that is used to handle sandstone waste water as claimed in claim 3 is characterized in that: the sandstone in sandstone in the grit mud-collecting well (17) and the grail mud-collecting well (18) is entered sandstone dewater unit (41) respectively dewater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110333587 CN102430272B (en) | 2011-10-28 | 2011-10-28 | Method for treating sandstone wastewater |
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|---|---|---|---|
| CN 201110333587 CN102430272B (en) | 2011-10-28 | 2011-10-28 | Method for treating sandstone wastewater |
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| CN102430272A true CN102430272A (en) | 2012-05-02 |
| CN102430272B CN102430272B (en) | 2013-12-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766702A (en) * | 2012-07-24 | 2012-11-07 | 广西大学 | High-speed sedimentation device |
| CN106242010A (en) * | 2016-08-31 | 2016-12-21 | 青川县俸佳硅矿有限责任公司 | A kind of washed-out sand sewage zero-discharge cycling and reutilization processes technique |
| CN107986478A (en) * | 2017-12-18 | 2018-05-04 | 合肥市脍炙人家家居用品有限责任公司 | A kind of sewage-treatment plant |
| CN109045774A (en) * | 2018-08-29 | 2018-12-21 | 日昌升集团有限公司 | A kind of sandstone flushing waste water processing unit and method |
| CN109626746A (en) * | 2019-01-14 | 2019-04-16 | 中原环保郑州设备工程科技有限公司 | The middle-size and small-size multipoint water feeding advanced nitrogen dephosphorization sewage disposal system of integration and processing method |
| CN112023456A (en) * | 2020-08-25 | 2020-12-04 | 长江勘测规划设计研究有限责任公司 | Sedimentation tank for treating high-concentration sandstone wastewater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766702A (en) * | 2012-07-24 | 2012-11-07 | 广西大学 | High-speed sedimentation device |
| CN106242010A (en) * | 2016-08-31 | 2016-12-21 | 青川县俸佳硅矿有限责任公司 | A kind of washed-out sand sewage zero-discharge cycling and reutilization processes technique |
| CN107986478A (en) * | 2017-12-18 | 2018-05-04 | 合肥市脍炙人家家居用品有限责任公司 | A kind of sewage-treatment plant |
| CN109045774A (en) * | 2018-08-29 | 2018-12-21 | 日昌升集团有限公司 | A kind of sandstone flushing waste water processing unit and method |
| CN109626746A (en) * | 2019-01-14 | 2019-04-16 | 中原环保郑州设备工程科技有限公司 | The middle-size and small-size multipoint water feeding advanced nitrogen dephosphorization sewage disposal system of integration and processing method |
| CN112023456A (en) * | 2020-08-25 | 2020-12-04 | 长江勘测规划设计研究有限责任公司 | Sedimentation tank for treating high-concentration sandstone wastewater |
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| CN102430272B (en) | 2013-12-25 |
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