CN203469557U - Combined precipitating and collecting device of ash-containing water in ash slag field - Google Patents
Combined precipitating and collecting device of ash-containing water in ash slag field Download PDFInfo
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- CN203469557U CN203469557U CN201320538364.6U CN201320538364U CN203469557U CN 203469557 U CN203469557 U CN 203469557U CN 201320538364 U CN201320538364 U CN 201320538364U CN 203469557 U CN203469557 U CN 203469557U
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- sedimentation basin
- buck
- ash
- weir
- slag field
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Abstract
The utility model discloses a combined precipitating and collecting device of ash-containing water in an ash slag field. By adoption of the combined precipitating and collecting device, the problem of environmental pollution caused by poor sewage treatment in a slag field in the prior art is solved. According to the technical scheme, the combined precipitating and collecting device comprises a primary dam, wherein the upstream of the primary dam is provided with the slag field; the downstream of the primary dam is provided with a reuse water pool which is communicated with the slag field by a discharging and percolating pipe; one side of the reuse water pool is also provided with a precipitating tank which is communicated with the slag field through a drainage pipe; the reuse water pool is communicated with the precipitating tank by a side-flow weir on the side wall of the reuse water pool. The combined precipitating and collecting device disclosed by the utility model has the advantages that all percolated liquid and a part of ash-containing water can be intercepted, ash slag carried by the percolated liquid and the ash-containing water can subside, sewage is effectively blocked, and thus the effects of clean water and sewage separation, circulating automatic flow and sewage reuse are achieved; the structure is simple, the control is simple, the investment cost and the operating cost are low, resources are saved and the environment-friendly effect is achieved.
Description
Technical field
The utility model relates to a kind of sewage disposal system.
Background technology
The industrial projects such as the thermo-power station that the Coal Chemical Engineering Projects such as domestic coking, coal liquefaction, coal gasification synthetic ammonia processed, coal gasification synthol ether fuel, the coal of take are fuel, power station, thermal power plant, thermal device can produce a large amount of lime-ash; These lime-ash belong to general solid waste, often need to set up coal cinder yard lime-ash is stored up to processing.For the coal cinder yard (claiming again slag field) of stacking these lime-ash, say, after long-term stacking, there is the problem of percolate, and after rainwater weather, a large amount of rainfalls also can form buck, in buck, mix and have lime-ash to be difficult to separation, even if after holding back simply on a small quantity due to lime-ash is difficult to separation only can be for red dog watering and part greening irrigation, thereby cause reuse difficulty, most of unprocessed just by follow-up row ooze system, flood drainage system drains into downstream.These percolates, buck are after flood drainage system drains into slag and swims after the match, and buck and the lime-ash carrying thereof will pollute downstream, cause the salinization of soil, destroy ecological environment.
Therefore, seepage control system and the buck co-precipitation gathering-device of the necessary Erecting and improving of coal cinder yard design, strictly control the pollution of lime-ash percolate to environment, pollutant discharge amount dropped to minimum.
Summary of the invention
The purpose of this utility model is in order to solve the problems of the technologies described above, a kind of coal cinder yard buck co-precipitation gathering-device is provided, this apparatus structure is simple, control is simple, can realize for the percolate of lime-ash and the buck that contains lime-ash carry out major part hold back collect and Combined Treatment after reuse, the object of fraction later stage rainwater qualified discharge.
Technical scheme comprises initial dam, the upstream of described initial dam is slag field, the downstream of described initial dam is provided with reuse pool, described reuse pool is communicated with slag field through drainage pipe, one side of described reuse pool is also provided with sedimentation basin, described sedimentation basin is communicated with slag field through the pipe that drains off floodwaters, and described reuse pool is communicated with the side-flow weir that sedimentation basin arranges on reuse pool sidewall.
The outlet section of described sedimentation basin is also provided with dam, pond, the downflow weir that described sedimentation basin arranges on dam, pond and downstream drain system connectivity.
Described downflow weir elevation of weir crest is higher than side-flow weir elevation of weir crest, and described side-flow weir is also provided with anti-return gate.
The inducer of described sedimentation basin is provided with mud pit, and slush pump is housed in mud pit, and the bottom surface of described mud pit is lower than the bottom surface of sedimentation basin.
The bottom surface of described sedimentation basin is towards the downward-sloping counter-slope of mud pit direction.
The outlet section of the described pipe that drains off floodwaters is provided with the fan-shaped energy dissipator that is positioned at mud pit top, described fan-shaped energy dissipator comprises fan-shaped guide platform, on described guide platform, the many rows deflector that is fan-shaped layout is equipped with at interval, interlaced arrangement between described adjacent two row's deflectors.
The coal cinder yard buck co-precipitation collection method of above-mentioned gathering-device, comprises following method,
Percolate in slag field is introduced the reuse pool in initial dam downstream by drainage pipe, early-stage rainwater falls into initial stage buck that slag field forms and through the pipe that drains off floodwaters, sends into sedimentation basin and precipitate, lime-ash in described initial stage buck sinks, when the water level of isolated supernatant liquid rises to higher than side-flow weir, through side-flow weir, flow into reuse pool.
When described water level in sedimentation basin continues to rise higher than overflow weir crest, close the anti-return gate of side-flow weir, the later stage buck that later stage rainwater falls into the formation of slag field enters sedimentation basin through the pipe that drains off floodwaters, after precipitation, by downflow weir gravity flow, enter downstream drain system, control the flow velocity of later stage buck in sedimentation basin and be less than 15.0mm/s.
The described initial stage buck that the described pipe that drains off floodwaters is drawn and/or later stage buck first flow into sedimentation basin after fan-shaped energy dissipator decompression energy dissipating again, and the lime-ash precipitating is along the counter-slope landing of sedimentation basin bottom surface to mud pit, and the slush pump in described mud pit can be extracted lime-ash out.
In the utility model, by the initial dam downstream in slag field, reuse pool is set for collecting the percolate of being discharged by drainage pipe, percolate is the liquid after successively diafiltration in slag field (being called again sewage), wherein contain the pollutants such as a certain amount of Cr VI, mercury, arsenic, lead, fluoride, pH value 10.5 is alkalescence, total hardness up to 43.6mg/L.For avoiding environmental pollution, do not advise toward downstream drain, can extract by pumping plant sewage in reuse pool (or after further purified treatment) out and continue to employ as backwater.Sedimentation basin is set in addition for collecting the buck of the discharge of the pipe that drains off floodwaters, the buck that inventor discharges the pipe that drains off floodwaters conducts in-depth analysis, find that buck has following characteristics: the formation of buck causes due to a large amount of rainfalls of upstream often, for early-stage rainwater falls into the initial stage buck that slag field forms afterwards, because early-stage rainwater has direct souring to slag field, in the initial stage buck forming, except being dissolved with Cr VI, mercury, arsenic, plumbous, the pollutants such as fluoride, pH value 9.5 is alkalescence, total hardness is up to outside 21.8mg/L, also contain a large amount of lime-ash, cinder content is up to 50000～100000mg/L, heavy contamination, if this class buck directly can cause severe contamination to downstream toward downstream drain, and fall within for later stage rainwater the later stage buck that slag field forms, because early-stage rainwater washes away and dissolves slag field, thereby this part later stage rainwater to fall into the pollutant loads such as later stage buck lime-ash that slag field forms few, major pollutants Cr VI, mercury, arsenic, plumbous, fluoride equal size is far below the permissible value of < < integrated wastewater discharge standard > > GB8978, pH value 8.0, total hardness 4.4mg/L, cinder content is also less, when sedimentation basin cannot hold, can discharge downstream again after preliminary sedimentation.During for the buck Combined Treatment of above-mentioned different situations, inventor is provided with side-flow weir on reuse pool sidewall and the downflow weir on dam, pond on the basis of reuse pool and sedimentation basin, and make downflow weir elevation of weir crest higher than side-flow weir elevation of weir crest, and side-flow weir is also provided with anti-return gate.By above-mentioned design, realization is for the combination treatment method of different bucks and sewage, both with serious pollution sewage and buck had been guaranteed to hold back, the object that realizes the separated of buck and sewage and reclaim separately, utilize reuse pool and liquid-retaining structure to bear the storage of percolate and initial stage buck under the nominal situation of reservoir area, sedimentation basin is received the lime-ash carrying in buck, and later stage buck can be disposed to downstream through downflow weir gravity flow.Anti-return gate is installed on side-flow weir, when water level continues to rise, for avoiding the sewage backflow in reuse pool, by controlling anti-return closing gate, sewage in reuse pool is limited in reuse pool, makes later stage buck by downflow weir, flow into downstream through sedimentation basin preliminary sedimentation simultaneously.And consider the characteristic of lime-ash in slag field: lime-ash mainly comprises ashes and slag, and ashes particle is all less than slag, therefore the heavy speed of lime-ash is controlled by ashes particle.And ashes particle size range: 0.1-0.2mm in slag field controls the flow velocity of later stage buck in sedimentation basin and is less than 15.0mm/s.
Further, the grey water yield multiple pressure power that the pipe of considering to drain off floodwaters is discharged is large, in order to reduce the stirring in sedimentation basin, guarantee the separating effect of the lime-ash in sedimentation basin, promote the separated of lime-ash and collect, fan-shaped energy dissipator above the port of export design of the pipe that drains off floodwaters is positioned at mud pit, make the buck of being discharged by the pipe that drains off floodwaters energy dissipating with fan-shaped even diffusion on fan-shaped guide platform, steadily enter sedimentation basin, the further energy dissipating of many rows deflector of described interlaced arrangement, be uniformly distributed current, slow down flow velocity, the buck that at utmost minimizing pours in is to the particularly stirring of mud pit of sedimentation basin.The mud pit of design is for the lime-ash in collecting precipitation pond (reclaiming with mud form), and can be extracted out and be reclaimed or return slag field by slush pump, because separated lime-ash granularity is little, it can sink and slide in mud pit along the sedimentation basin diapire face tilting according to gravity, thereby realizes the centralized collection of lime-ash.
The utility model apparatus structure is simple, can effectively tackle and collect the percolate of slag field, the lime-ash carrying precipitated in buck simultaneously, prevents sewage, cinder pollution downstream environment; Can realize the separation of removing contamination, the sewage that the form of using by pumped back is collected reuse pool effectively utilizes, and can realize the regeneration of sewage, economizes on water and produces economic benefit, and later stage buck is emitted in time, in order to avoid device is produced to pressure.This device economic input is little, and operating cost is low, power consumption is few, safety and environmental protection.The buck that technique that the utility model is used is simple, can produce slag field, upstream by heterogeneity classify, precipitation, collection, reuse and discharge, operational management is simple and reliable, is conducive to the environmental protection in downstream.The sewage cinder content reclaiming in reuse pool is little, can be used for industrial process waters, and the mud cinder content that reclaims in mud pit is high can be used for producing construction material, recycles respectively the economic benefit that favourable raising is reclaimed, and reduces secondary pollution.The utility model device sewage treatment capacity, capacity, the interception of sewage and discharge capacity can all be carried out appropriate design as required, the cinder content that in sedimentation basin, overflow enters the clarified solution in reuse pool can be down to below 400mg/L, Cr VI in outer row's later stage buck, mercury, arsenic, plumbous, the pollutant loads such as fluoride are far below the permissible value of < < integrated wastewater discharge standard > > GB8978 and < < urban wastewater treatment firm pollutant emission standard > > GB18918, pH value 8.0, total hardness 4.4mg/L, cinder content can be down to below 70mg/L.
Accompanying drawing explanation
Fig. 1 is the horizontal layout schematic diagram of this device.
Fig. 2 is side-flow weir schematic diagram.
Fig. 3 is sedimentation basin inducer bilateral diffusion plane layout drawing.
Fig. 4 is sedimentation basin inducer vertical section schematic diagram.
Wherein, drain off floodwaters pipe, the fan-shaped energy dissipator of 6-, 6.1-deflector, 6.2-guide platform, 7-sedimentation basin, 7.1-bottom surface, 8-side-flow weir, 9-downflow weir, 10-mud pit, 10.1-bottom surface, 11-initial dam, 12-anti-return gate, 13-slush pump of 1-drainage pipe, 2-reuse pool, 3-pumping plant, dam, 4-pond, 5-.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further explained to explanation:
With reference to Fig. 1, the upstream of initial dam 11 is slag field, and the downstream of described initial dam 11 is provided with reuse pool 2, and is furnished with corresponding pumping plant 3 for extracting the reusing sewage in reuse pool 2.Described reuse pool 2 is communicated with slag field through drainage pipe 1, percolate is sent in reuse pool 2 through drainage pipe 1, one side of described reuse pool 2 is also provided with sedimentation basin 7, described sedimentation basin 7 is communicated with slag field through the pipe 5 that drains off floodwaters, for the buck of slag field is introduced in sedimentation basin 7, described reuse pool 2 is communicated with the side-flow weir 8 that sedimentation basin 7 arranges on reuse pool 2 sidewalls.Water level in sedimentation basin 7 is during higher than the elevation of weir crest of side-flow weir 8, can flow in reuse pool 2 by the mode of gravity flow, the design of side-flow weir 8 can make the buck that the upper strata cinder content in sedimentation basin 8 is low flow into reuse pool 2, and prevents that the buck that the grey quantity of slag is high that contains of lower floor from flowing into reuse pool 2; The inducer of described sedimentation basin 7 is provided with mud pit 10, slush pump 11 is housed in mud pit 10, the bottom surface 10.1 of described mud pit 10 is lower than the bottom surface 7.1 of sedimentation basin 7, and the bottom surface 7.1 of sedimentation basin 7 is towards the downward-sloping counter-slope of mud pit 10 directions, can make like this lime-ash of sedimentation basin 7 bottom depositions slip in mud pit 7 with gravity along counter-slope, make lime-ash herein by centralized collection, then draw back slag field by slush pump 13.The outlet section of described sedimentation basin 7 is also provided with dam, pond 4, downflow weir 9 and downstream drain system connectivity that described sedimentation basin 7 arranges on dam, pond 7.
Described downflow weir 9 elevation of weir crests are higher than side-flow weir 8 elevation of weir crests, and described side-flow weir is also provided with anti-return gate 12.When rising over side-flow weir 8, the water level of sedimentation basin 7 can certainly flow into reuse pool 2 like this, and work as water level, rise to over downflow weir 9, for preventing sewage backflow, can make anti-return gate 12 close, make that reuse pool 2 is temporary transient isolates with sedimentation basin 7, the water in sedimentation basin 7 can enter downstream drain system in the mode of overflow by downflow weir 9.The described outlet section that drains off floodwaters pipe 5 is provided with the fan-shaped energy dissipator 6 that is positioned at mud pit 10 tops, described fan-shaped energy dissipator 6 comprises fan-shaped guide platform 6.2, on described guide platform 6.2, the many rows deflector 6.1 that is fan-shaped layout is equipped with at interval, 6.1 interlaced arrangement of described adjacent two row's deflectors, can make like this buck by drain off floodwaters pipe during 5 outlet section by significantly energy dissipating, reduce flow velocity and impulsive force, alleviate as far as possible into sedimentation basin 7 is stirred, be beneficial to Ash Water Separator and precipitation, make the cinder content of buck on upper strata minimum.
Collection method:
In the reuse pool 2 that percolate in slag field is introduced initial dam 11 downstreams by drainage pipe 1, form sewage, percolate is therefore named to be conceived for liquid after diafiltration, without cinder content, can be by can be used for industrial process waters after the further purified treatment of pumping plant 3 extraction after reuse pool 2 centralized collection;
Early-stage rainwater falls into a small amount of initial stage buck that slag field forms, can after fan-shaped energy dissipator 6 energy dissipatings, enter in sedimentation basin 7 by the pipe 5 that drains off floodwaters, and in sedimentation basin 7 the standing Ash Water Separator that makes, lime-ash slips in mud pit 10 along the bottom surface 7.1 of counter-slope after sinking, lime-ash can by slush pump 13 be extracted reuses after by centralized collection with the form of mud in mud pit 10, after processing, can be used for producing construction material, when water level rise to surpass the top Cheng Cheng of side-flow weir 8 when high, the supernatant liquid in sedimentation basin 7 can flow in reuse pool 2 certainly, after form sediment forming sediment, entering cinder content in the supernatant liquid of reuse pool can be down to below 400mg/L.
When rainfall continues, later stage rainwater continues to fall into slag field and forms a large amount of later stage bucks, after the pipe 5 that drains off floodwaters is by fan-shaped energy dissipator 6 decompression energy dissipatings, sending into sedimentation basin 7 precipitates, lime-ash in later stage buck sinks to being collected by mud pit 10, when rising, the water level of sedimentation basin 7 surpasses side-flow weir 8 top Cheng Cheng when high, through side-flow weir 8, flow into reuse pool 2, , when described water level in sedimentation basin 7 continues to rise higher than downflow weir 9, close the anti-return gate 12 of side-flow weir 8, later stage buck directly enters downstream drain system through preliminary sedimentation by downflow weir 9 gravity flows in sedimentation basin 7, control the flow velocity of later stage buck in sedimentation basin and be less than 15.0mm/s, in flood discharge, guarantee the separating effect of lime-ash, in outer row's later stage buck, cinder content can be down to below 70mg/L.
Claims (7)
1. a coal cinder yard buck co-precipitation gathering-device, comprise initial dam, the upstream of described initial dam is slag field, it is characterized in that, the downstream of described initial dam is provided with reuse pool, and described reuse pool is communicated with slag field through drainage pipe, and a side of described reuse pool is also provided with sedimentation basin, described sedimentation basin is communicated with slag field through the pipe that drains off floodwaters, and described reuse pool is communicated with the side-flow weir that sedimentation basin arranges on reuse pool sidewall.
2. coal cinder yard buck co-precipitation gathering-device as claimed in claim 1, is characterized in that, the outlet section of described sedimentation basin is also provided with dam, pond, the downflow weir that described sedimentation basin arranges on dam, pond and downstream drain system connectivity.
3. coal cinder yard buck co-precipitation gathering-device as claimed in claim 2, is characterized in that, described downflow weir elevation of weir crest is higher than side-flow weir elevation of weir crest, and described side-flow weir is also provided with anti-return gate.
4. the coal cinder yard buck co-precipitation gathering-device as described in claim 1-3 any one, is characterized in that, the inducer of described sedimentation basin is provided with mud pit, and slush pump is housed in mud pit, and the bottom surface of described mud pit is lower than the bottom surface of sedimentation basin.
5. coal cinder yard buck co-precipitation gathering-device as claimed in claim 4, is characterized in that, the bottom surface of described sedimentation basin is towards the downward-sloping counter-slope of mud pit direction.
6. coal cinder yard buck co-precipitation gathering-device as claimed in claim 4, it is characterized in that, the outlet section of the described pipe that drains off floodwaters is provided with the fan-shaped energy dissipator that is positioned at mud pit top, described fan-shaped energy dissipator comprises fan-shaped guide platform, and on described guide platform, the many rows deflector that is fan-shaped layout is equipped with at interval.
7. coal cinder yard buck co-precipitation gathering-device as claimed in claim 6, is characterized in that, interlaced arrangement between described adjacent two row's deflectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538364.6U CN203469557U (en) | 2013-08-30 | 2013-08-30 | Combined precipitating and collecting device of ash-containing water in ash slag field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538364.6U CN203469557U (en) | 2013-08-30 | 2013-08-30 | Combined precipitating and collecting device of ash-containing water in ash slag field |
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| CN203469557U true CN203469557U (en) | 2014-03-12 |
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| CN201320538364.6U Expired - Lifetime CN203469557U (en) | 2013-08-30 | 2013-08-30 | Combined precipitating and collecting device of ash-containing water in ash slag field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463836A (en) * | 2013-08-30 | 2013-12-25 | 中国五环工程有限公司 | Combined sediment collector for ash water of ash field and collection method thereof |
-
2013
- 2013-08-30 CN CN201320538364.6U patent/CN203469557U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463836A (en) * | 2013-08-30 | 2013-12-25 | 中国五环工程有限公司 | Combined sediment collector for ash water of ash field and collection method thereof |
| CN103463836B (en) * | 2013-08-30 | 2015-05-06 | 中国五环工程有限公司 | Combined sediment collector for ash water of ash field and collection method thereof |
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Granted publication date: 20140312 |