CN105036416A - Lime joint backflow heavy-metal wastewater treatment system - Google Patents
Lime joint backflow heavy-metal wastewater treatment system Download PDFInfo
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- CN105036416A CN105036416A CN201510471250.8A CN201510471250A CN105036416A CN 105036416 A CN105036416 A CN 105036416A CN 201510471250 A CN201510471250 A CN 201510471250A CN 105036416 A CN105036416 A CN 105036416A
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Abstract
The invention provides a lime joint backflow heavy-metal wastewater treatment system. The system comprises a waste water collection pool (1), a lime chemical supply pool (2), a flocculation pool (3), a settling pool (4), an adjusting pool (5), a discharge pool (6), a sludge thickener (8) and a sludge filter-pressing system (7), a flocculation chemical supply system (9), an acid chemical adding system (10) and a lime chemical blending system (11). The system can operate fully automatically, the treatment efficiency is improved, the manpower cost is lowered, the scaling problem of lime emulsion in a pipe is solved, and the pipe is prevented from being blocked.
Description
Technical field
The present invention relates to a kind of lime node backflow heavy metal waste water treatment system.
Background technology
In acid heavy metal wastewater treatment industry, lime slurry can be used for the pH value of regulating water quality, and can Coagulation aiding be played to the colloidal particle in water body, as granular core weighting agent, the precipitate and separate of insolubles can be accelerated, improve the chemical stability improved coagulating sedimentation effect, increase water body.By strengthening the dosage of lime slurry, making pH value be elevated to about 10.5, the effect removing heavy metal ions in sewage can be reached.Therefore be widely used in electroplating wastewater processing.But the conveying of lime slurry is comparatively difficult, lime slurry is easily fouling in the duct easily, and dirty blocked pipeline, causes heavy metal waste water treatment system processing efficiency low, affect the qualified discharge of water quality.
The conveying of current heavy metal-polluted water treatment system lime slurry adopts Cemented filling, when fouling appears in pipeline sodalime emulsion, need manual cleaning pipeline, increase human cost, and need stoppage in transit heavy metal waste water treatment system when cleaning, the normal operation of influential system.
Existing lime slurry mode of movement easily causes pipeline scale, causes heavy metal containing wastewater treatment efficiency low, affects the qualified discharge of water quality.Dirty stifled pipeline adopts manual cleaning, increases human cost.
Summary of the invention
For the situation that pipeline scale dirt is stifled, sewage treating efficiency is low, level of automation is lower of prior art, the object of this invention is to provide a kind of lime node backflow heavy metal waste water treatment system, it comprises wastewater collection pond, lime dosing pond, flocculation basin, settling tank, equalizing tank, discharge pond, sludge thickener, sludge press filtration system, flocculation medicine system, sour medicine system, lime dispensing system;
Wherein wastewater collection pond connects lime dosing pond, flocculation basin, settling tank, equalizing tank, discharge pond successively by pipeline, and the bottom settlings outlet of settling tank connects sludge thickener via pump, then connects sludge press filtration system,
Settling tank connects flocculation medicine system, equalizing tank connects sour medicine system, lime dosing pond connects lime dispensing system by lime transport pipe, lime transport pipe is provided with the lime reflux line for making lime slurry return lime dispensing system, lime transport pipe and lime reflux line are respectively equipped with ratio adjusting valve, for regulating the milk of lime liquid measure adding lime dosing pond and the milk of lime liquid measure returning lime dispensing system.
Preferably, lime transport pipe is provided with normal closed gate in addition.
Preferably, normal closed gate power is provided by air inflator.
Preferably, tank level control system is provided with in wastewater collection pond.
Preferably, pH online feedback system is provided with in lime dosing pond.
Preferably, pH online feedback system is provided with in equalizing tank.
Preferably, whole system all adopts PLC to control (programmable logic controller) unattended operation.
The operating process of use said system is: when the waste water in wastewater collection pond reaches certain liquid level, PLC controls waste water lifting pump startup automatically, waste water enters lime dosing pond, water quality acid-basicity feeds back to PLC control system by pH Controlling System, and carry out rational judgment, PLC controls normal closed gate and opens (such as by air inflator system), and passing ratio variable valve, add the milk of lime liquid measure in lime dosing pond, lime slurry is inputted by lime transport pipe, add lime dosing pond a certain amount of after return lime automated dispensing system by lime reflux line, this system is a circulation, lime slurry all has lime slurry to circulate in lime transport pipe and lime reflux line, prevent the remaining in pipeline of lime, and then prevent the fouling of pipeline.Waste water flows into flocculation basin by lime dosing pond, polymeric flocculant is added by flocculation medicine system in flocculation basin, guarantee there is flocs unit in flocculation basin, then settling tank is entered, solid-liquid separation in settling tank, supernatant liquor enters equalizing tank by pH online feedback system feedback to PLC control system, and PLC control system controls sour medicine system and adds acid quantitatively, and waste water is by discharge pond qualified discharge.In settling tank pond, throw out controls to pump into sludge thickener by PLC control system, controls to enter sludge press filtration system again after concentrated by PLC control system, and so far whole lime node backflow heavy metal waste water treatment system terminates.
The pipeline that the present invention arranges lime slurry twice comprises lime transport pipe and lime reflux line, constitutes a circulation and can guarantee all have lime slurry to circulate in whole lime pipeline, prevents lime slurry remaining in pipeline, and then prevents pipeline scale.Lime transport pipe is provided with normal closed gate and ratio adjusting valve, pH on-line control system feeds back to PLC system the acid-basicity of water quality, PLC system controls being open in Calcified pond of normal closed gate and adds lime slurry, the add-on of ratio volume governor valve control lime slurry in Calcified pond, guarantees that lime slurry add-on meets processing parameter.Lime reflux line is provided with ratio adjusting valve, plays safety effect and guarantee that the add-on of lime slurry in Calcified pond meets processing parameter on the one hand, guarantee have lime slurry to circulate in lime reflux line on the one hand, prevent pipeline scale.
Advantage of the present invention:
1, the present invention can full-automaticly run, and improves processing efficiency, reduces human cost.(during pipeline scale, must run by halt system, manually carry out cleaning pipeline).
2, the invention solves lime slurry scale problems in pipeline, prevent dirty blocked pipeline.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of lime node of the present invention backflow heavy metal waste water treatment system.
Fig. 2 is the schematic diagram of the lime node return-flow system of the lime node backflow heavy metal waste water treatment system of Fig. 1.
Reference numeral:
1: wastewater collection pond, 2: lime dosing pond, 3: flocculation basin, 4: settling tank, 5: equalizing tank, 6: discharge pond, 8: sludge thickener, 7: sludge press filtration system, 9: flocculation medicine system, 10: sour medicine system, 11: lime automated dispensing system, 12: air inflator system, 13:pH online feedback system, 14,16: ratio adjusting valve, 15: normal closed gate, 17: lime transport pipe, 18: lime reflux line, 19:PLC Controlling System
Embodiment
Below in conjunction with accompanying drawing, the present invention is described.
See figures.1.and.2, a kind of lime node backflow heavy metal waste water treatment system, it comprises wastewater collection pond 1, lime dosing pond 2, flocculation basin 3, settling tank 4, equalizing tank 5, discharge pond 6, sludge thickener 8, sludge press filtration system 7, flocculation medicine system 9, sour medicine system 10, lime dispensing system 11;
Wherein wastewater collection pond 1 connects lime dosing pond 2, flocculation basin 3, settling tank 4, equalizing tank 5, discharge pond 6 successively by pipeline, and the bottom settlings outlet of settling tank 4 connects sludge thickener 8 via pump, then connects sludge press filtration system 7,
Settling tank 4 connects flocculation medicine system 9, equalizing tank 5 connects sour medicine system 10, lime dosing pond 2 connects lime dispensing system 11 by lime transport pipe 17, lime transport pipe 11 is provided with the lime reflux line 18 for making lime slurry return lime dispensing system, lime transport pipe 17 and lime reflux line 18 are respectively equipped with ratio adjusting valve 14,16, for regulating the milk of lime liquid measure adding lime dosing pond 2 and the milk of lime liquid measure returning lime dispensing system 11.
Preferably, lime transport pipe is provided with normal closed gate 15 in addition.Preferably, normal closed gate power is provided by air inflator 12.Preferably, tank level control system is provided with in wastewater collection pond.Preferably, pH online feedback system is provided with in lime dosing pond.Preferably, pH online feedback system is provided with in equalizing tank.Preferably, whole system all adopts PLC to control unattended operation.
The operating process of use said system is: when the waste water in wastewater collection pond 1 reaches certain liquid level, PLC controls waste water lifting pump startup automatically, waste water enters lime dosing pond, water quality acid-basicity feeds back to PLC control system 19 by pH Controlling System 13, and carry out rational judgment, PLC controls normal closed gate 15 and opens (by air inflator system 12), and passing ratio variable valve 14, 16 add the milk of lime liquid measure in lime dosing pond 2, lime slurry is inputted by lime transport pipe 17, add lime dosing pond 2 a certain amount of after return lime automated dispensing system 11 by lime reflux line 18, this system is a circulation, lime slurry all has lime slurry to circulate in lime transport pipe 17 and lime reflux line 18, prevent the remaining in pipeline of lime, and then prevent the fouling of pipeline.Waste water flows into flocculation basin 3 by lime dosing pond 2, polymeric flocculant is added by flocculation medicine system 9 in flocculation basin 3, guarantee there is flocs unit in flocculation basin 3, then settling tank 4 is entered, solid-liquid separation in settling tank 4, supernatant liquor enters equalizing tank 5 and feeds back to PLC control system 19 by pH online feedback system 13, and PLC control system 19 controls sour medicine system 10 and adds acid quantitatively, and waste water is by discharge pond 6 qualified discharge.In settling tank 4 pond, throw out controls to pump into sludge thickener 8 by PLC control system 19, after concentrated again by PLC control system 19 control to enter sludge press filtration system 7 so far whole lime node backflow heavy metal waste water treatment system terminate.
Prove through test, the present invention can full-automaticly run, and long-time running lime slurry pipeline, without fouling, improves processing efficiency, reduces human cost, solves lime slurry scale problems in pipeline, prevents dirty blocked pipeline.
Claims (7)
1. a lime node backflow heavy metal waste water treatment system, it comprises wastewater collection pond (1), lime dosing pond (2), flocculation basin (3), settling tank (4), equalizing tank (5), discharge pond (6), sludge thickener (8), sludge press filtration system (7), flocculation medicine system (9), sour medicine system (10), lime dispensing system (11);
Wherein wastewater collection pond (1) connects lime dosing pond (2), flocculation basin (3), settling tank (4), equalizing tank (5), discharge pond (6) successively by pipeline, the bottom settlings outlet of settling tank (4) connects sludge thickener (8) via pump, connect sludge press filtration system (7) again
Settling tank (4) connects flocculation medicine system (9), equalizing tank (5) connects sour medicine system (10), lime dosing pond (2) connects lime dispensing system (11) by lime transport pipe (17), lime transport pipe (17) is provided with the lime reflux line (18) for making lime slurry return lime dispensing system (11), lime transport pipe (17) and lime reflux line (18) are respectively equipped with ratio adjusting valve (14), (16), add the milk of lime liquid measure in lime dosing pond (2) for regulating and return the milk of lime liquid measure of lime dispensing system (11).
2. lime node backflow heavy metal waste water treatment system according to claim 1, wherein, lime transport pipe is provided with normal closed gate in addition.
3. lime node backflow heavy metal waste water treatment system according to claim 2, wherein, normal closed gate power is provided by air inflator system (12).
4. the lime node backflow heavy metal waste water treatment system according to any one of claim 1-3, wherein, wastewater collection is provided with tank level control system in pond.
5. the lime node backflow heavy metal waste water treatment system according to any one of claim 1-4, wherein, is provided with pH online feedback system in lime dosing pond.
6. the lime node backflow heavy metal waste water treatment system according to any one of claim 1-5, wherein, be provided with pH online feedback system in equalizing tank.
7. the lime node backflow heavy metal waste water treatment system according to any one of claim 1-6, wherein, whole system all adopts PLC to control unattended operation.
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| CN201510471250.8A CN105036416B (en) | 2015-08-01 | 2015-08-01 | A kind of lime node reflux heavy metal waste water treatment system |
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| CN201510471250.8A CN105036416B (en) | 2015-08-01 | 2015-08-01 | A kind of lime node reflux heavy metal waste water treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105417784A (en) * | 2015-12-09 | 2016-03-23 | 北京安国水道自控工程技术有限公司 | Method for curing solidification treatment of heavy metal-containing sour water |
| CN109650510A (en) * | 2018-12-06 | 2019-04-19 | 彩虹（合肥）液晶玻璃有限公司 | A kind of PH control device and waste water treatment system |
| CN110902881A (en) * | 2019-12-02 | 2020-03-24 | 沈阳环境科学研究院 | Efficient combined water treatment process for short-distance coagulating sedimentation and filtration |
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| CN204369733U (en) * | 2014-12-24 | 2015-06-03 | 浙江蓝天求是环保股份有限公司 | A kind of flue gas desulfurization wastewater treatment system |
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| JPS60190287A (en) * | 1984-03-09 | 1985-09-27 | Mitsubishi Heavy Ind Ltd | Treatment of waste gas desulfurization waste water |
| CN202164162U (en) * | 2011-07-04 | 2012-03-14 | 吉林市世纪华扬环境工程有限公司 | Lime milk dosing and neutralizing device for sewage treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105417784A (en) * | 2015-12-09 | 2016-03-23 | 北京安国水道自控工程技术有限公司 | Method for curing solidification treatment of heavy metal-containing sour water |
| CN109650510A (en) * | 2018-12-06 | 2019-04-19 | 彩虹（合肥）液晶玻璃有限公司 | A kind of PH control device and waste water treatment system |
| CN110902881A (en) * | 2019-12-02 | 2020-03-24 | 沈阳环境科学研究院 | Efficient combined water treatment process for short-distance coagulating sedimentation and filtration |
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| CN105036416B (en) | 2018-04-20 |
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Address after: 230601 Anhui city of Hefei Province Economic and Technological Development Zone No. 11 Zi Peng Lu Patentee after: Hefei Tongguan electronic copper foil Co., Ltd Address before: 230601 Anhui city of Hefei Province Economic and Technological Development Zone No. 11 Zi Peng Lu Patentee before: HEFEI TONGGUAN GUOXUAN COPPER PRODUCTS Co.,Ltd. |