CN103663784A - Treatment and recovery system for battery lead-acid waste water - Google Patents
Treatment and recovery system for battery lead-acid waste water Download PDFInfo
- Publication number
- CN103663784A CN103663784A CN201310640910.1A CN201310640910A CN103663784A CN 103663784 A CN103663784 A CN 103663784A CN 201310640910 A CN201310640910 A CN 201310640910A CN 103663784 A CN103663784 A CN 103663784A
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- pipeline
- tank
- recovery system
- waste water
- groove
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- 239000002253 acid Substances 0.000 title claims abstract description 39
- 238000011084 recovery Methods 0.000 title claims abstract description 27
- 239000002351 wastewater Substances 0.000 title abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000010865 sewage Substances 0.000 claims abstract description 48
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 22
- 239000010802 sludge Substances 0.000 claims abstract description 21
- 239000000701 coagulant Substances 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims description 39
- 230000001105 regulatory effect Effects 0.000 claims description 38
- 238000004065 wastewater treatment Methods 0.000 claims description 17
- 230000001112 coagulating effect Effects 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000005189 flocculation Methods 0.000 claims description 10
- 230000016615 flocculation Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 13
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000015271 coagulation Effects 0.000 abstract 3
- 238000005345 coagulation Methods 0.000 abstract 3
- 239000008394 flocculating agent Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000003637 basic solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The objective of the invention is to provide a treatment and recovery system for battery lead-acid waste water. The treatment and recovery system comprises a sewage pool, power units disposed above the sewage pool, and adjusting tanks connecting with the power units through pipelines. The adjusting tanks are connected with a coagulation reaction tank through pipelines. The coagulation reaction tank is connected with a tilted-plate separator through pipelines. A sludge tank is disposed below the tilted-plate separator. The tilted-plate separator is connected with a terminal monitoring tank through pipelines. The pH terminal monitoring tank is connected with a sand filtering tank through pipelines. The sand filtering tank is connected with a clean water tank through pipelines. The lead-acid waste water in the sewage tank firstly flows into the adjusting tank to adjust the pH value, and then flows into the coagulation reaction tank and precipitates rapidly under the actions of a coagulant aid and a flocculating agent. Liquid after being treated by the tilted-plate separator flows into the terminal monitoring tank to be processed, and after the water quality of the liquid is determined to be qualified, the liquid is purified in the sand filtering tank and collected in the clean water tank for reutilization, thus reducing emission, saving the enterprise cost and fully utilizing the water resource.
Description
Technical field
The present invention relates to a kind of waste water treatment recovery system, be specifically related to a kind of battery plumbic acid waste water treatment recovery system.
Background technology
At present, store battery can produce a large amount of lead waste water in process of production, and lead content exceeds national standard number.Due to plumbous serious harm, and environmental pollution and shortage of resources problem be on the rise, the processing pay attention to day by day of people to lead acid cell waste water, and also the current producer exists the wasting of resources phenomenon of direct discharging of waste water up to standard.Therefore, after lead acid cell wastewater treatment is up to standard, be recycled, can reduce discharging, save enterprise water use, also make limited water resources further recycle, for further minimizing river pollution with solve shortage of water resources problem and there is reality meaning, therefore designing a kind of equipment that can administer, can recycle again battery plumbic acid waste water seems particularly important.
Summary of the invention
The invention provides a kind of battery plumbic acid waste water treatment recovery system, by first the plumbic acid waste water in sewage lagoon being entered to regulating tank and adding after alkaline liquid, adjusting pH value in regulating tank; Enter again coagulating groove, by adding coagulant aids and flocculation agent to make waste water rapid precipitation; Then by tilted plate separator, make the throw out in waste water fully be sunk and enter sludge sump to processing, liquid in waste water is by terminal monitoring groove, add acidic liquid to carry out PH adjusting, whether and it is qualified to measure water quality, after purifying by sand filter if qualified, enter after clean water basin are collected and be convenient to second stage employ, if defective, enter sewage lagoon and re-start improvement, thereby reached the object that can administer, can recycle again battery plumbic acid waste water.
The object of this invention is to provide a kind of battery plumbic acid waste water treatment recovery system, comprise sewage lagoon, be located at the power set on sewage lagoon, the regulating tank being connected by pipeline with power set, regulating tank is connected with coagulating groove by pipeline, coagulating groove is connected with tilted plate separator by pipeline, tilted plate separator below is provided with sludge sump, tilted plate separator is connected with terminal monitoring groove by pipeline, PH terminal monitoring groove is connected with sand filter by pipeline, and sand filter is connected with clean water basin by pipeline.
Further improvement of the present invention is: the quantity of described regulating tank has one at least, between regulating tank, by pipeline, connects, and sewage is carried out by the pipeline with valve and sewage lagoon, forming loop on the last regulating tank of processing; In regulating tank, be provided with pH value proofing unit, regulating tank top is provided with storage alkali case, on pipeline between storage alkali case and each regulating tank, be equipped with valve and under meter, storage alkali case is connected with alkali lye pond, alkali lye pond is provided with by carrying alkali lye to storing up power set in alkali case, that be connected with the pipeline that stores up alkali case, in storage alkali case and alkali lye pond, is provided with condensate tank of dehumidifier.
Further improvement of the present invention is: described recovery system comprises coagulant aids groove and flocculation agent groove, is provided with power set on the two, and power set is connected by pipeline with coagulating groove and pipeline is provided with under meter.
Further improvement of the present invention is: described sludge sump is connected with sludge pump, and sludge pump is connected with pressure filter, is provided with the pipeline of the recovery sewage being connected with sewage lagoon on pressure filter.
Further improvement of the present invention is: the other storage acid tank that is provided with of described terminal monitoring groove, storage acid tank is connected with the pipeline that tilted plate separator leads to terminal monitoring groove, on the coupling end of storage acid tank, be provided with power set and under meter, in storage acid tank, be provided with water level inductor.
Further improvement of the present invention is: in described terminal monitoring groove, be provided with water quality detecting device, the water side of terminal monitoring groove forms loop by the pipeline with valve and sewage lagoon.
Further improvement of the present invention is: water side, described sand filter top forms loop by the pipeline with valve and sewage lagoon, water side, sand filter bottom is connected with clean water basin by the pipeline with valve, is provided with another with by the pipeline of power set is set between clean water basin and sand filter.
Further improvement of the present invention is: the water side of described clean water basin is provided with power set.
Further improvement of the present invention is: in described storage alkali case, regulating tank, coagulating groove, coagulant aids groove, flocculation agent groove, be provided with whipping appts.
Further improvement of the present invention is: described recovery system comprises sewage treatment controller, and described power set, valve, under meter, condensate tank of dehumidifier, pH value proofing unit, sludge pump, pressure filter, water quality detecting device are all electrically connected with sewage treatment controller.
Beneficial effect of the present invention: by first the plumbic acid waste water in sewage lagoon being entered to regulating tank and adding after alkaline liquid, adjusting pH value in regulating tank; Enter again coagulating groove, by adding coagulant aids and flocculation agent to make waste water rapid precipitation; Then by tilted plate separator, make the throw out in waste water fully be sunk and enter sludge sump to processing, liquid in waste water is by terminal monitoring groove, add acidic liquid to carry out PH adjusting, whether and it is qualified to measure water quality, after purifying by sand filter if qualified, enter after clean water basin are collected and be convenient to second stage employ, if defective, enter sewage lagoon and re-start improvement, effectively reduce discharging, save enterprise cost, make full use of water resources.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Wherein: 1-sewage lagoon, 2-pipeline, 3-regulating tank, 4-coagulating groove, 5-tilted plate separator, 6-sludge sump, 7-terminal detects groove, 8-sand filter, 9-clean water basin, 10-PH value detection device, 11-storage alkali case, 12-valve, 13-under meter, 14-alkali lye pond, 15-power set, 16-condensate tank of dehumidifier, 17-coagulant aids groove, 18-flocculation agent groove, 19-sludge pump, 20-pressure filter, 21-stores up acid tank, 22-water quality detecting device, 23-whipping appts.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
As shown in Figure 1, the present embodiment provides a kind of battery plumbic acid waste water treatment recovery system, comprise sewage lagoon 1, be located at the power set 15 on sewage lagoon 1, the regulating tank 3 being connected by pipeline 2 with power set 15, power set 15 pumps to the sewage in sewage lagoon 1 in regulating tank 3, regulating tank 3 is connected with coagulating groove 4 by pipeline 2, coagulating groove 4 is connected with tilted plate separator 5 by pipeline 2, tilted plate separator 5 belows are provided with the sludge sump 6 for collecting precipitation thing, tilted plate separator 5 is connected with terminal monitoring groove 7 by pipeline 2, terminal monitoring groove 7 is connected with sand filter 8 by pipeline 2, sand filter 8 is connected with clean water basin 9 by pipeline 2.The quantity of described regulating tank 3 has three, between regulating tank 3, by pipeline 2, connects, and sewage is carried out by the pipeline 2 with valve 12 and sewage lagoon 1, forming loop on last the 3rd regulating tank 3 of processing, in regulating tank 3, be provided with the pH value proofing unit 10 measuring acidity and alkalinity, regulating tank 3 tops are provided with storage alkali case 11, on pipeline 2 between storage alkali case 11 and each regulating tank 3, be equipped with valve 12 and can monitor the under meter 13 that adds alkaline liquid volume, first regulating tank 3 adds the amount of basic solution to fix, all the other regulating tanks 3 add the amount of basic solution to have sewage control treater automatically to control according to interior PH proofing unit 10 detected results of previous regulating tank 3, if pH value is undesirable after the 3rd regulating tank 3 regulates, sewage is transmitted back to sewage lagoon 1 by the pipeline 2 communicating with sewage lagoon, re-start improvement.Storage alkali case 11 is connected with alkali lye pond 14, alkali lye pond 14 is provided with by carrying alkali lye to storing up power set 15 in alkali case 11, that be connected with the pipeline 2 of storage alkali case 11, in storage alkali case 11 and alkali lye pond 14, be provided with condensate tank of dehumidifier 16, if storage alkali case 11 interior water levels are when lower, sewage treatment controller automatic control is controlled power set 15 on alkali lye pond 14 to storage alkali case 11 interior supplementary alkali lye.Described recovery system comprises coagulant aids groove 17 and flocculation agent groove 18, is provided with power set 15 on the two, and power set 15 is connected by pipeline 2 with coagulating groove 4 and pipeline 2 is provided with under meter 13.Described sludge sump 6 is connected with sludge pump 19, and sludge pump 19 is connected with pressure filter 20, is provided with the pipeline 2 being connected with sewage lagoon 1, the sewage producing for reclaiming pressure-filtering process on pressure filter 20.The other storage acid tank 21 that is provided with of described terminal monitoring groove 7, storage acid tank 21 is connected with pipeline 12 pipelines that tilted plate separator 5 leads to terminal monitoring groove 7, on the coupling end of storage acid tank 21, be provided with power set 15 and under meter 13, in storage acid tank 21, be provided with water level inductor 16.In described terminal monitoring groove 7, be provided with water quality detecting device 22, the water side of terminal monitoring groove 7 forms loop by the pipeline 2 with valve 12 and sewage lagoon 1.Described sand filter 8 water sides, top form loop by the pipeline 2 with valve 12 and sewage lagoon 1, sand filter 8 water sides, bottom are by being connected with clean water basin 9 with the pipeline 2 of valve 12, are provided with another with by the pipeline 2 of power set 15 is set between clean water basin 9 and sand filter 8.The water side of described clean water basin 9 is provided with power set 15, and power set 15 can be delivered to water for fire-fighting purpose pipeline by clear water, process water pipeline carries out second stage employ.In described storage alkali case 11, regulating tank 3, coagulating groove 4, coagulant aids groove 17, flocculation agent groove 18, be provided with whipping appts 23.Described recovery system comprises sewage treatment controller, and described power set 15, valve 12, under meter 13, condensate tank of dehumidifier 16, pH value proofing unit 10, sludge pump 19, pressure filter 20, water quality detecting device 22 are all electrically connected with sewage treatment controller and are controlled and started and close by sewage treatment controller.
First the present embodiment by entering the plumbic acid waste water in sewage lagoon 1 regulating tank 3 and adding after alkaline liquid, adjusting pH value in regulating tank 3; Enter again coagulating groove 4, by adding coagulant aids and flocculation agent to make waste water rapid precipitation; Then by tilted plate separator 5, making throw out in waste water fully be sunk and enter sludge sump 6 processes by pressure filter 20, liquid in waste water is by terminal monitoring groove 7, add acidic liquid to carry out PH adjusting, whether and it is qualified to measure water quality, after purifying by sand filter 8 if qualified, enter after clean water basin 9 are collected and be convenient to second stage employ, if defective, enter sewage lagoon 1 and re-start improvement, thereby reached the object that can administer, can recycle again battery plumbic acid waste water.
Claims (10)
1. a battery plumbic acid waste water treatment recovery system, it is characterized in that: comprise sewage lagoon (1), be located at the power set (15) on sewage lagoon (1), the regulating tank (3) being connected by pipeline (2) with power set (15), regulating tank (3) is connected with coagulating groove (4) by pipeline (2), coagulating groove (4) is connected with tilted plate separator (5) by pipeline (2), tilted plate separator (5) below is provided with sludge sump (6), tilted plate separator (5) is connected with terminal monitoring groove (7) by pipeline (2), PH terminal monitoring groove (7) is connected with sand filter (8) by pipeline (2), sand filter (8) is connected with clean water basin (9) by pipeline (2).
2. battery plumbic acid waste water treatment recovery system as claimed in claim 1, it is characterized in that: the quantity of described regulating tank (3) has one at least, between regulating tank (3), by pipeline (2), connect, sewage is carried out to the last regulating tank (3) of processing and above by the pipeline (2) with valve (12) and sewage lagoon (1), form loop; In regulating tank (3), be provided with pH value proofing unit (10), regulating tank (3) top is provided with storage alkali case (11), on pipeline (2) between storage alkali case (11) and each regulating tank (3), be equipped with valve (12) and under meter (13), storage alkali case (11) is connected with alkali lye pond (14), alkali lye pond (14) is provided with by carrying alkali lye to storing up power set (15) in alkali case (11), that be connected with the pipeline (2) that stores up alkali case (11), in storage alkali case (11) and alkali lye pond (14), is provided with condensate tank of dehumidifier (16).
3. battery plumbic acid waste water treatment recovery system as claimed in claim 1, it is characterized in that: described recovery system comprises coagulant aids groove (17) and flocculation agent groove (18), on the two, be provided with power set (15), power set (15) is connected by pipeline (2) with coagulating groove (4) and pipeline (2) is provided with under meter (13).
4. battery plumbic acid waste water treatment recovery system as claimed in claim 1, it is characterized in that: described sludge sump (6) is connected with sludge pump (19), sludge pump (19) is connected with pressure filter (20), is provided with the pipeline (2) of the recovery sewage being connected with sewage lagoon (1) on pressure filter (20).
5. battery plumbic acid waste water treatment recovery system as claimed in claim 1, it is characterized in that: the other storage acid tank (21) that is provided with of described terminal monitoring groove (7), storage acid tank (21) is connected with pipeline (12) pipeline that tilted plate separator (5) leads to terminal monitoring groove (7), on the coupling end of storage acid tank (21), be provided with power set (15) and under meter (13), in storage acid tank (21), be provided with water level inductor (16).
6. battery plumbic acid waste water treatment recovery system as claimed in claim 1, it is characterized in that: in described terminal monitoring groove (7), be provided with water quality detecting device (22), the water side of terminal monitoring groove (7) forms loop by the pipeline (2) with valve (12) and sewage lagoon (1).
7. battery plumbic acid waste water treatment recovery system as claimed in claim 1, it is characterized in that: described sand filter (8) water side, top forms loop by the pipeline (2) with valve (12) and sewage lagoon (1), sand filter (8) water side, bottom is by being connected with clean water basin (9) with the pipeline (2) of valve (12), is provided with another with by the pipeline (2) of power set (15) is set between clean water basin (9) and sand filter (8).
8. battery plumbic acid waste water treatment recovery system as claimed in claim 1, is characterized in that: the water side of described clean water basin (9) is provided with power set (15).
9. the battery plumbic acid waste water treatment recovery system as described in claim 1-3, is characterized in that: in described storage alkali case (11), regulating tank (3), coagulating groove (4), coagulant aids groove (17), flocculation agent groove (18), be provided with whipping appts (23).
10. the battery plumbic acid waste water treatment recovery system as described in claim 1-8 any one, it is characterized in that: described recovery system comprises sewage treatment controller, described power set (15), valve (12), under meter (13), condensate tank of dehumidifier (16), pH value proofing unit (10), sludge pump (19), pressure filter (20), water quality detecting device (22) are all electrically connected with sewage treatment controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640910.1A CN103663784A (en) | 2013-12-04 | 2013-12-04 | Treatment and recovery system for battery lead-acid waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640910.1A CN103663784A (en) | 2013-12-04 | 2013-12-04 | Treatment and recovery system for battery lead-acid waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103663784A true CN103663784A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310640910.1A Pending CN103663784A (en) | 2013-12-04 | 2013-12-04 | Treatment and recovery system for battery lead-acid waste water |
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| CN (1) | CN103663784A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445745A (en) * | 2014-12-18 | 2015-03-25 | 上海艾希尔化工产品有限公司 | Movable acid pickling wastewater treatment system |
| CN106367592A (en) * | 2016-08-25 | 2017-02-01 | 安徽华铂再生资源科技有限公司 | Method of quickly settling waste lead paste from maintenance-free storage batteries |
| CN110272106A (en) * | 2019-06-17 | 2019-09-24 | 安吉绿金金属材料有限公司 | The wastewater treatment equipment and its processing method of waste and old lead acid accumulator processing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659259A (en) * | 2012-04-16 | 2012-09-12 | 宝钢股份黄石涂镀板有限公司 | Acid-cleaning wastewater treatment method for correcting and regulating pH value |
| CN102942263A (en) * | 2012-11-11 | 2013-02-27 | 骆驼集团华南蓄电池有限公司 | Sewage treatment method |
| CN203700069U (en) * | 2013-12-04 | 2014-07-09 | 天能电池(芜湖)有限公司 | Recovery system for plumbic acid wastewater treatment of battery |
-
2013
- 2013-12-04 CN CN201310640910.1A patent/CN103663784A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659259A (en) * | 2012-04-16 | 2012-09-12 | 宝钢股份黄石涂镀板有限公司 | Acid-cleaning wastewater treatment method for correcting and regulating pH value |
| CN102942263A (en) * | 2012-11-11 | 2013-02-27 | 骆驼集团华南蓄电池有限公司 | Sewage treatment method |
| CN203700069U (en) * | 2013-12-04 | 2014-07-09 | 天能电池(芜湖)有限公司 | Recovery system for plumbic acid wastewater treatment of battery |
Non-Patent Citations (1)
| Title |
|---|
| 于永辉等: "电镀酸洗综合废水处理工程改造实践", 《中国给水排水》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445745A (en) * | 2014-12-18 | 2015-03-25 | 上海艾希尔化工产品有限公司 | Movable acid pickling wastewater treatment system |
| CN104445745B (en) * | 2014-12-18 | 2016-06-08 | 上海艾希尔化工产品有限公司 | Portable pickle liquor processes system |
| CN106367592A (en) * | 2016-08-25 | 2017-02-01 | 安徽华铂再生资源科技有限公司 | Method of quickly settling waste lead paste from maintenance-free storage batteries |
| CN106367592B (en) * | 2016-08-25 | 2018-05-01 | 安徽华铂再生资源科技有限公司 | A kind of method of rapid subsidence maintenance-free battery waste diachylon |
| CN110272106A (en) * | 2019-06-17 | 2019-09-24 | 安吉绿金金属材料有限公司 | The wastewater treatment equipment and its processing method of waste and old lead acid accumulator processing |
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Application publication date: 20140326 |