CN103850319A - Method and device for reducing rainwater entering production system - Google Patents
Method and device for reducing rainwater entering production system Download PDFInfo
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- CN103850319A CN103850319A CN201210496228.5A CN201210496228A CN103850319A CN 103850319 A CN103850319 A CN 103850319A CN 201210496228 A CN201210496228 A CN 201210496228A CN 103850319 A CN103850319 A CN 103850319A
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- rainwater
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Abstract
The invention discloses a method and a device for reducing rainwater entering a production system. According to the method and the device, rainwater with unqualified detected pH values within the range of a cofferdam are collected and sent to the production system for recycling, and rainwater with qualified detected pH values. The device comprises the cofferdam, the production system, a sewage ditch, a sewage tank, a sewage pump, a valve, a discharge pipe and a rainwater drainage pipe network, wherein the sewage ditch is connected with the sewage tank, and the sewage pump is arranged inside the sewage tank and connected with the production system; the discharge pipe can discharge sewage water which does not need processing into the rainwater drainage pipe network, and the valve is arranged on the discharge pipe. The method and the device for reducing the rainwater entering the production system have the advantages of greatly reducing the rainwater entering the production process and dilution to solutions, reducing steam consumption due to the rainwater entering the process, and being particularly high in effects for aluminum oxide production enterprise in high-rainfall-volume regions.
Description
Technical field
The method that the present invention relates to reduce rainwater and enter production system, is especially being provided with cofferdam, can receive the operation of rainwater, belongs to technical field of alumina production.
Background technology
In Bayer process process for making alumina, adopt soda lye to dissolve the alumina in Bauxite Ore, caustic soda is as medium, assist the stripping of bauxite, dilution, decompose, vaporization cycle process, but be also present in the overall process of alumina producing just because of caustic soda, prevent that caustic soda is lost in environment, reclaiming for the caustic soda of revealing is also the important component part that controls environment and pollute, wet method (having caustic soda) operation is conventionally all provided with cofferdam and reclaims due to cleaning maintenance, reveal, the reasons such as mechanical loss lost caustic alkali from production procedure.
Cofferdam can also be played and be avoided production system storage facility, as groove, tank etc., the effect of revealing, collapsing operation, plant area's surrounding enviroment are worked the mischief, at wet method operation periphery, cofferdam is set and prevents that caustic alkali from being that current alumina producing enterprise adopts comparative maturity, the economic practice conventionally in being leaked to environment, pollutes and also play a good role for controling environment.
But it is indoor that not all operation is all arranged in, the operation that cofferdam is set also have be much arranged in outdoor, like this rain, when especially raining heavily, inevitably have a lot of rainwater and enter into production procedure.After rainwater enters flow process as without processing, directly leak, not only pollute, and can rush weak solution, increase the steam consumption, increased the energy consumption cost of producing alumina product.
Summary of the invention
In order to solve the problems of the technologies described above, the object of this invention is to provide a kind of method that reduces rainwater and enter production system: after the pH value within the scope of cofferdam is detected to defective rainwater-collecting, send into production system recycling, the qualified rainwater of pH value detection is directly discharged;
For reaching the effect of automatic control, adopt following methods: determine the pH value of rainwater by measuring the electric conductivity of rainwater, the testing result of rainwater is delivered to control centre, control centre is by the flow direction of foul water pump and valve control rainwater.
The invention also discloses a kind of device of realizing described method, comprise cofferdam, production system, also comprise Bilge, sump, foul water pump, valve, outer discharge pipe, rain drainage pipeline networks; Described Bilge connects sump, and foul water pump is set in sump, and foul water pump connects production system, and outer discharge pipe will not need effluent discharge to be processed to rain drainage pipeline networks, and valve is arranged on outer discharge pipe;
Described Bilge is arranged on the ground of slope aspect, is provided with outer discharge pipe at the low spot of Bilge, and outer discharge pipe is provided with valve, and outer discharge pipe is connected with rain drainage pipeline networks, and outer discharge pipe is arranged height a little outward higher than rain drainage pipeline networks access point height.
The low spot that outer row's point of described outer discharge pipe is Bilge.
Described valve is electromagnetic valve.
Also comprise control centre and checkout gear, described checkout gear is for detection of the pH value of rainwater; Described checkout gear converts the pH value of rainwater to the signal of telecommunication and is sent to control centre, and described control centre is according to described signal of telecommunication by-pass valve control and foul water pump.
Described checkout gear comprises electrode, described electrode two ends apply certain voltage, and described electrode immerses in sewage, in the time that the acid-base value of sewage changes, corresponding the changing of described electrode both end voltage, the variation that described voltage occurs can be transformed into control signal and be sent to control centre.
Described control centre is PLC.
Described checkout gear is arranged in Bilge.
Described checkout gear also can be arranged in sump.
The present invention further discloses another kind and realize the device of described method, described Bilge is arranged on the ground of slope aspect, on foul water pump outlet conduit, lateral is installed, described lateral connects respectively production system and rain drainage pipeline networks, and valve control sewage whereabouts is set on described lateral.
Described valve is two groups, is separately positioned between foul water pump and production system, on lateral between foul water pump and rain drainage pipeline networks.
Described valve is electromagnetic valve.
Also comprise control centre and checkout gear, described checkout gear is for detection of the pH value of rainwater; Described checkout gear converts the pH value of rainwater to the signal of telecommunication and is sent to control centre, and described control centre is according to described signal of telecommunication by-pass valve control and foul water pump.
Described checkout gear comprises electrode, described electrode two ends apply certain voltage, and described electrode immerses in sewage, in the time that the acid-base value of sewage changes, corresponding the changing of described electrode both end voltage, the variation that described voltage occurs can be transformed into control signal and be sent to control centre.
Described control centre is PLC.
Described checkout gear is arranged in Bilge.
Described checkout gear also can be arranged in sump.
Principle of the present invention is: while starting rainfall, Bilge is collected sewage to sump, opens foul water pump, sends sewage back to production system, rainfall a period of time or detect after qualified and adopt automatic or manual mode control rainwater to flow to through pH value, will not need the rainwater of processing to be discharged to rain drainage pipeline networks.
Advantage of the present invention and effect are as follows: with the area of annual rainfall 1500mm, in cofferdam, open area is that the red-mud settlement and separation washing procedure of 8000 ㎡ is example, by mode described in this patent, by 80% efficiency calculation of damming, can reduce every year rainwater and enter production procedure 9600m
3, by evaporation steam-water ratio 0.25, can steam saving 2400 tons.If all wet method operations all adopt mode described in this patent, obtained benefit will be more remarkable.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is automatic control system connection diagram.
In figure: 1, cofferdam; 2, Bilge; 3, sump; 4, foul water pump; 5, valve; 6, outer discharge pipe; 7, rain drainage pipeline networks; 8, production system, 31, PLC, 32, electrode, 33, detector capsul, 34, detector core.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, but protection scope of the present invention is not limit by embodiment.
Embodiment 1: as shown in Figure 1, the present invention reduces rainwater and enters the method for production system, comprise the steps: to be provided with the wet method subitem in cofferdam 1, ground slope aspect Bilge 2, and be provided with sump 3 and foul water pump 4, be provided with outer discharge pipe 6 at the low spot of Bilge 2, valve 5 is installed, be connected with the outer rain drainage pipeline networks 7 of operation and in-process is arranged a height outward higher than operation rain drainage pipeline networks access point height outward, while starting rainfall, open foul water pump 4, send sewage back to production system 8, after rainfall a period of time (or qualified through the detection of pH value), adopt automatic or manual mode to open valve 5, and close foul water pump 4, rainwater flows automatically to rain drainage pipeline networks 7.
As shown in Figure 3, for realizing automatic control, also comprise control centre and checkout gear, described checkout gear comprises detector capsul 33 and detector core 34 and electrode 32, electrode 32 is arranged in Bilge 2, also can be arranged in sump 3, detector core 34 applies certain DC voltage to two electrodes 32, detect two interelectrode resistance simultaneously and caused the variation of resistance voltage change is sent to the PLC31 of control centre, in the time that the pH value of rainwater changes, corresponding the changing of described electrode 32 both end voltage, PLC31 is according to described signal of telecommunication by-pass valve control 5 and foul water pump 4, and then the flow direction of control rainwater.
Described control centre is that PLC can adopt universal models, as the product of Siemens Company.Described valve is electromagnetic valve, can adopt commercial product.
Embodiment 2: as shown in Figure 2, the present invention reduces rainwater and enters the method for production system, comprise the steps: to be provided with the wet method subitem in cofferdam 1, ground slope aspect Bilge 2, and be provided with sump 3 and foul water pump 4, on foul water pump 4 outlet conduits, lateral 6 is installed, control sewage whereabouts by valve 5, while starting rainfall, sewage returns to production system 8 by foul water pump 4, switch valve 5 after rainfall a period of time (or qualified through the detection of pH value), is discharged to rain drainage pipeline networks 7 by branched pipe 6 outward by rainwater.This embodiment is applicable to rainwater when larger, can pass through foul water pump 4 capable of increasing water discharge capacities.
The present embodiment can adopt the automatic control system described in embodiment 1 equally.Just do not repeat at this.
Claims (19)
1. reduce the method that rainwater enters production system, it is characterized in that: after the pH value within the scope of cofferdam is detected to defective rainwater-collecting, send into production system recycling, pH value is detected to qualified rainwater and directly discharge.
2. according to the method described in claim 1, it is characterized in that: determine the pH value of rainwater by measuring the electric conductivity of rainwater, the testing result of rainwater is delivered to control centre, control centre is by the flow direction of foul water pump and valve control rainwater.
3. a device of realizing method described in claim 1, comprises cofferdam, production system, it is characterized in that: also comprise Bilge, sump, foul water pump, valve, outer discharge pipe, rain drainage pipeline networks; Described Bilge connects sump, and foul water pump is set in sump, and foul water pump connects production system, and outer discharge pipe will not need effluent discharge to be processed to rain drainage pipeline networks, and valve is arranged on outer discharge pipe.
4. according to the device described in claim 3, it is characterized in that: described Bilge is arranged on the ground of slope aspect, be provided with outer discharge pipe at the low spot of Bilge, outer discharge pipe is provided with valve, outer discharge pipe is connected with rain drainage pipeline networks, and outer discharge pipe is arranged height a little outward higher than rain drainage pipeline networks access point height.
5. according to the device described in claim 4, it is characterized in that: the low spot that outer row's point of described outer discharge pipe is Bilge.
6. according to the device described in claim 4, it is characterized in that: described valve is electromagnetic valve.
7. according to the device described in claim 6, it is characterized in that: also comprise control centre and checkout gear, described checkout gear is for detection of the pH value of rainwater; Described checkout gear converts the pH value of rainwater to the signal of telecommunication and is sent to control centre, and described control centre is according to described signal of telecommunication by-pass valve control and foul water pump.
8. according to the device described in claim 6, it is characterized in that: described checkout gear comprises electrode, described electrode two ends apply certain voltage, described electrode immerses in sewage, in the time that the acid-base value of sewage changes, corresponding the changing of described electrode both end voltage, the variation that described voltage occurs can be transformed into control signal and be sent to control centre.
9. according to the device described in claim 6, it is characterized in that: described control centre is PLC.
10. according to the device described in claim 6, it is characterized in that: described checkout gear is arranged in Bilge.
11. according to the device described in claim 6, it is characterized in that: described checkout gear is arranged in sump.
12. according to the device described in claim 3, it is characterized in that: described Bilge is arranged on the ground of slope aspect, on foul water pump outlet conduit, lateral is installed, described lateral connects respectively production system and rain drainage pipeline networks, and valve control sewage whereabouts is set on described lateral.
13. according to the device described in claim 12, it is characterized in that: described valve is two groups, is separately positioned between foul water pump and production system, on lateral between foul water pump and rain drainage pipeline networks.
14. according to the device described in claim 13, it is characterized in that: described valve is electromagnetic valve.
15. according to the device described in claim 14, it is characterized in that: also comprise control centre and checkout gear, described checkout gear is for detection of the pH value of rainwater; Described checkout gear converts the pH value of rainwater to the signal of telecommunication and is sent to control centre, and described control centre is according to described signal of telecommunication by-pass valve control and foul water pump.
16. according to the device described in claim 14, it is characterized in that: described checkout gear comprises electrode, described electrode two ends apply certain voltage, described electrode immerses in sewage, in the time that the acid-base value of sewage changes, corresponding the changing of described electrode both end voltage, the variation that described voltage occurs can be transformed into control signal and be sent to control centre.
17. according to the device described in claim 14, it is characterized in that: described control centre is PLC.
18. according to the device described in claim 14, it is characterized in that: described checkout gear is arranged in Bilge.
19. according to the device described in claim 14, it is characterized in that: described checkout gear is arranged in sump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496228.5A CN103850319B (en) | 2012-11-28 | 2012-11-28 | A kind of rainwater that reduces enters the device of production system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210496228.5A CN103850319B (en) | 2012-11-28 | 2012-11-28 | A kind of rainwater that reduces enters the device of production system |
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| CN103850319A true CN103850319A (en) | 2014-06-11 |
| CN103850319B CN103850319B (en) | 2016-09-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004300894A (en) * | 2003-04-01 | 2004-10-28 | Taisei Setsubi Kk | Drainage collecting system |
| KR100733588B1 (en) * | 2006-11-15 | 2007-06-28 | (주)해석 | A drainage line |
| CN201071309Y (en) * | 2007-07-25 | 2008-06-11 | 贵阳铝镁设计研究院 | Backwater split stream structure of dry method red mud heap |
| CN201169826Y (en) * | 2008-03-25 | 2008-12-24 | 深圳市南山区珠光小学 | Intellectualized sewage water recognition split stream apparatus |
| CN102061720A (en) * | 2010-12-07 | 2011-05-18 | 杨敏 | Rainwater collecting device |
| CN201883519U (en) * | 2010-12-22 | 2011-06-29 | 贵阳铝镁设计研究院 | Automatic flood drainage system for larger-area open workshop of alumina factory |
| CN202466781U (en) * | 2012-03-12 | 2012-10-03 | 河南省交通科学技术研究院有限公司 | Highway bridge deck runoff real-time identification and selecting collection system |
-
2012
- 2012-11-28 CN CN201210496228.5A patent/CN103850319B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004300894A (en) * | 2003-04-01 | 2004-10-28 | Taisei Setsubi Kk | Drainage collecting system |
| KR100733588B1 (en) * | 2006-11-15 | 2007-06-28 | (주)해석 | A drainage line |
| CN201071309Y (en) * | 2007-07-25 | 2008-06-11 | 贵阳铝镁设计研究院 | Backwater split stream structure of dry method red mud heap |
| CN201169826Y (en) * | 2008-03-25 | 2008-12-24 | 深圳市南山区珠光小学 | Intellectualized sewage water recognition split stream apparatus |
| CN102061720A (en) * | 2010-12-07 | 2011-05-18 | 杨敏 | Rainwater collecting device |
| CN201883519U (en) * | 2010-12-22 | 2011-06-29 | 贵阳铝镁设计研究院 | Automatic flood drainage system for larger-area open workshop of alumina factory |
| CN202466781U (en) * | 2012-03-12 | 2012-10-03 | 河南省交通科学技术研究院有限公司 | Highway bridge deck runoff real-time identification and selecting collection system |
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| CN103850319B (en) | 2016-09-07 |
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