CN103073124A - Heavy metal wastewater treatment process - Google Patents
Heavy metal wastewater treatment process Download PDFInfo
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- CN103073124A CN103073124A CN2013100098132A CN201310009813A CN103073124A CN 103073124 A CN103073124 A CN 103073124A CN 2013100098132 A CN2013100098132 A CN 2013100098132A CN 201310009813 A CN201310009813 A CN 201310009813A CN 103073124 A CN103073124 A CN 103073124A
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- waste water
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Abstract
The invention discloses a heavy metal wastewater treatment process, which includes the steps that collecting wastewater from a wastewater collection pond, placing the wastewater in a pH adjusting pond to adjust the pH value within 10.5-11; placing the wastewater into an oxidation pond to oxidize phosphorous acid and hypophosphorous acid to orthophosphoric acid; then discharging to an inclined tube settling pond to deposit sediment at the bottom of the settling pond; processing through a sludge filter pressing system, and transferring the sludge generated after filter pressing to a qualified unit for acceptance and processing; discharging liquid at the upper part of the inclined tube settling pond to a middle water pond, pumping a sand filter for filtering, so as to remove suspended materials and particulate matters in the liquid; pumping a carbon filter to remove fine particles, colloid and organic matters in wastewater; discharging the wastewater processed by the carbon filter to a recapturing device to remove trace heavy metal ions in water; and finally discharging the water to the outside. According to the invention, the sand filter and the carbon filter are additionally arranged for processing, so that the effluent meets even exceeds the requirement for discharge water turbidity; and the recapturing device is additionally arranged to guarantee that the heavy metal ions in the discharge water is far lower than the effluent standard.
Description
Technical field
The present invention relates to water-treatment technology field, particularly relate to the heavy metal waste water treatment process in a kind of electronics Copper Foil manufacturing.
Background technology
Waste water in the manufacturing of electronics Copper Foil contains chromium, zinc, copper, the contents of many kinds of heavy metal ion such as nickel, the sewage and waste water emission standard is carried out [total copper (mg/l) 0.5 according to (GB8978-1996) primary standard in the past, total zinc (mg/l) 2.0, total chromium (mg/l) 1.5, sexavalent chrome (mg/l) 0.5, total nickel (mg/l) 1.0], but Environmental Protection Administration requires electroplating industry sewage drainage standard must carry out according to the plating standard [total copper (mg/l) 0.5 at present, total zinc (mg/l) 1.5, total chromium (mg/l) 1.0, sexavalent chrome (mg/l) 0.2, total nickel (mg/l) 0.5], therefore traditional technique does not reach new sewage drainage standard, and perhaps effluent quality is unstable.
Summary of the invention
Technical problem to be solved by this invention is a kind of heavy metal waste water treatment process of proposing for above-mentioned prior art defective.This technique is by increasing sand-bed filter, carbon filter and the device of recapturing in original treatment system, and increase sand-bed filter and carbon filter satisfy water outlet and surpass the requirement of discharge water turbidity, increase the device of recapturing and guarantee that discharge water heavy metal example is far below emission standard.
The technical problem that the present invention requires to solve can be achieved through the following technical solutions:
A kind of heavy metal waste water treatment process at first, enters heavy metal wastewater thereby in the wastewater collection pond and to collect;
Secondly, the waste water in the wastewater collection pond is entered the PH equalizing tank, in the PH equalizing tank, add lime, the waste water pH value is adjusted to 10.5 ~ 11;
The 3rd, waste water enters oxidation pond from the PH equalizing tank, adds the oxygenant clorox in oxidation pond phosphorous acid and Hypophosporous Acid, 50 are oxidized to ortho-phosphoric acid;
The 4th, waste water enters tube settler from oxidation pond, and throw out is deposited on the settling tank bottom;
The 5th, the throw out of tube settler bottom enters the sludge press filtration system and processes, the sludge press filtration system comprises comprehensive sludge sump, sludge pump and filtering equipment, the mud of discharging from the tube settler bottom is introduced into comprehensive sludge sump, pump into filtering equipment by sludge pump and carry out the press filtration processing, the mud that press filtration produces is given the unit reception ﹠ disposal of qualification; The liquid on tube settler top enters intermediate pool, to be for further processing;
The 6th, the waste water in the intermediate pool pumps into sand-bed filter, does filler with quartz sand in the sand-bed filter, to remove suspended matter and the large particulate matter in dewatering;
The 7th, waste water enters carbon filter from sand-bed filter, fills gac in the carbon filter, and fine particle, colloid, the organism in the waste water removed in charcoal absorption;
The 8th, the waste water of processing through carbon filter enters the device of recapturing, and fills the heavy metal adsorption material in the device of recapturing, and is used for the heavy metal ion of absorption waste water trace, and out water is discharged to the external world from the device of recapturing.
The quartz sand that described sand-bed filter employing particle diameter is φ 2～4mm is as filler, and backwash rate is 12L/m2.S, when the sand-bed filter pressure at two ends surpasses 0.15Mpa, needs carry out back flushing to sand-bed filter; Described carbon filter adopts shell-shaped activated carbon.
Described PH equalizing tank and oxidation pond are furnished with control system for adding drugs, control system for adding drugs adds lime and clorox respectively in PH equalizing tank and oxidation pond, described control system for adding drugs comprises medicine-chest, under meter and on-line detector table, described on-line detector epi-position is in medicine-chest, and described under meter is arranged between medicine-chest and PH equalizing tank, medicine-chest and the oxidation pond.
Owing to having adopted as above technical scheme, the present invention has following features:
1, the present invention has increased sand-bed filter, carbon filter and makes water outlet satisfy and surpass the requirement of discharge water turbidity, and suspended substance is less than 50mg/L;
2, increase the device of recapturing and guarantee the discharge water heavy metal ion far below emission standard, in the discharge water after the processing copper content less than 0.2mg/L, zinc content less than 0.5mg/L, total chrome content less than 0.1mg/L, nickel content less than 0.2mg/L.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, the present invention includes wastewater collection pond 1, PH equalizing tank 2, oxidation pond 3, tube settler 4, sludge press filtration system 5, intermediate pool 6, sand-bed filter 7, carbon filter 8, the device 9 of recapturing, control system for adding drugs 10.
Wastewater collection pond 1 is used for the collection of comprehensive wastewater, and homogenizing is stablized the water yield of comprehensive wastewater.
PH equalizing tank 2 is regulated waste water ph by adding lime, satisfies subsequent disposal system needs, and online pH monitoring device 21 is set in the PH equalizing tank 2, is used for detecting the pH value of PH equalizing tank 2 interior waste water.The pH value of waste water is adjusted to 10.5 ~ 11.Adding lime is full automatic control.
Oxidation pond 3 is oxidized to ortho-phosphoric acid by add the oxygenant clorox in waste water with phosphorous acid and Hypophosporous Acid, 50, and dosing is full automatic control.
The precipitation of the hydroxide precipitate that tube settler 4 is mainly used in generating.
Sludge press filtration system 5 mainly comprises mud collecting tank 51, sludge pump 52, pressure filter 53.The mud that press filtration produces is given the unit reception ﹠ disposal of qualification.
Sand-bed filter 7 select with particle diameter be the quartz sand of φ 2～4mm as filler, purpose is suspended matter and the large particulate matter in the removal water.The back washing strength of sand-bed filter 7 is 12L/m2.S, when sand-bed filter 7 pressure at two ends surpass 0.15Mpa, needs sand-bed filter 7 is carried out back flushing.The filtration velocity of waste water in sand-bed filter 7 is about 8-12m/h.The removal efficient of the suspended matter in 7 pairs of water of sand-bed filter can reach more than 90%.Assurance filters out the SDI of water pollution index≤5, to guarantee the normal operation of follow-up system.
Fill out high quality fruit shell mould activated carbon in the carbon filter 8, utilize the surface-area of activated carbon large, the characteristics such as excellent adsorption, the materials such as the fine particle in the absorption waste water, colloid, organism, guarantee its water outlet SDI(pollution index)≤3, sand-bed filter 8 bottoms are filled out a small amount of macrobead quartz sand and are made supporting layer, prevent that the leakage of gac from affecting effluent quality.The filtration velocity of waste water in char filter 8 is at 8-12m/h, and 8 pairs of organic matter removal effects of char filter can reach more than 50%.
Recapture and fill the heavy metal adsorption material in the device 9, be used for the heavy metal ion of absorption waste water trace, can reach more than 90% the removal effect of micro heavy ion.Be the effective continuity to the chemical precipitation removal effect, guarantee that waste water is far below the emission standard stable emissions.
Control system for adding drugs 10 consists predominantly of medicine-chest 101, under meter 102, on-line detector table (not shown) composition.The medicine-chest 101 unified PE dosing tanks that adopt the 1T capacity.
The waste water that at first contains various heavy metal ion enters wastewater collection pond 1, waste water enters PH equalizing tank 2 by the first lift pump, and at this pond adding lime and oxygenant, then flow into oxidation pond 3 and carry out oxidizing reaction, at last at oxidation pond 3 interior adding flocculation agents, when entering inclined-plate clarifying basin 4, the large and closely knit alumen ustum of formation carries out precipitation separation, throw out enters sludge press filtration system 5 from the bottom, supernatant liquor flows automatically to intermediate pool 6, pump into sand-bed filter 7 and char filter 8 by the second lift pump, process finally by crossing the device 9 of recapturing, efflux again.
Above demonstration and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification sheets just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. a heavy metal waste water treatment process is characterized in that, at first, heavy metal wastewater thereby is entered in the wastewater collection pond collect;
Secondly, the waste water in the wastewater collection pond is entered the PH equalizing tank, in the PH equalizing tank, add lime, the waste water pH value is adjusted to 10.5 ~ 11;
The 3rd, waste water enters oxidation pond from the PH equalizing tank, adds the oxygenant clorox in oxidation pond phosphorous acid and Hypophosporous Acid, 50 are oxidized to ortho-phosphoric acid;
The 4th, waste water enters tube settler from oxidation pond, and throw out is deposited on the settling tank bottom;
The 5th, the throw out of tube settler bottom enters the sludge press filtration system and processes, the sludge press filtration system comprises comprehensive sludge sump, sludge pump and filtering equipment, the mud of discharging from the tube settler bottom is introduced into comprehensive sludge sump, pump into filtering equipment by sludge pump and carry out the press filtration processing, the mud that press filtration produces is given the unit reception ﹠ disposal of qualification; The liquid on tube settler top enters intermediate pool;
The 6th, the waste water in the intermediate pool pumps into sand-bed filter, does filler with quartz sand in the sand-bed filter, to remove suspended matter and the large particulate matter in dewatering;
The 7th, waste water enters carbon filter from sand-bed filter, fills gac in the carbon filter, and fine particle, colloid, the organism in the waste water removed in charcoal absorption;
The 8th, the waste water of processing through carbon filter enters the device of recapturing, and fills the heavy metal adsorption material in the device of recapturing, and is used for the heavy metal ion of absorption waste water trace, and out water is discharged to the external world from the device of recapturing.
2. heavy metal waste water treatment process as claimed in claim 1, it is characterized in that, the quartz sand that described sand-bed filter employing particle diameter is φ 2～4mm is as filler, and back washing strength is 12L/m2.S, when the sand-bed filter pressure at two ends surpasses 0.15Mpa, need sand-bed filter is carried out back flushing; Described carbon filter adopts shell-shaped activated carbon.
3. heavy metal waste water treatment process as claimed in claim 1 or 2, it is characterized in that, described PH equalizing tank and oxidation pond are furnished with control system for adding drugs, control system for adding drugs adds lime and clorox respectively in PH equalizing tank and oxidation pond, described control system for adding drugs comprises medicine-chest, under meter and on-line detector table, described on-line detector epi-position is in medicine-chest, and described under meter is arranged between medicine-chest and PH equalizing tank, medicine-chest and the oxidation pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013100098132A CN103073124A (en) | 2013-01-11 | 2013-01-11 | Heavy metal wastewater treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100098132A CN103073124A (en) | 2013-01-11 | 2013-01-11 | Heavy metal wastewater treatment process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482797A (en) * | 2013-10-14 | 2014-01-01 | 哈尔滨工业大学深圳研究生院 | Process and device for removing hypophosphites and phosphites by advanced oxidation coupling technique |
| CN104211225A (en) * | 2014-09-12 | 2014-12-17 | 中南林业科技大学 | Multiple complex treatment method for heavy metal sewage |
| CN109626666A (en) * | 2019-02-25 | 2019-04-16 | 宁波长华长盛汽车零部件有限公司 | Efficient waste water treatment system |
| CN111747595A (en) * | 2019-03-29 | 2020-10-09 | 温州桂森环境科技有限公司 | Waste water purification process in incineration slag treatment process |
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| JPS62294491A (en) * | 1986-06-11 | 1987-12-21 | Hitachi Plant Eng & Constr Co Ltd | Treatment of waste water incorporating gallium and arsenic |
| CN1686870A (en) * | 2005-03-31 | 2005-10-26 | 苏州市环境工程有限责任公司 | Technique for processing reclamation of industrial wastewater from printing electronic circuit board |
| JP2007021350A (en) * | 2005-07-15 | 2007-02-01 | Seiichi Manabe | Removal method of toxic substance in exuded water from least controlled landfill site |
| KR100804245B1 (en) * | 2006-09-08 | 2008-02-18 | 재단법인 포항산업과학연구원 | Method for removing heavy metal and color from landfill leachates using steelmaking slag |
| CN101244860A (en) * | 2008-03-28 | 2008-08-20 | 北京清大国华环保科技有限公司 | Extremely-high concentration multi-species heavy metal waste liquid treatment method and apparatus |
| CN102190392A (en) * | 2010-03-12 | 2011-09-21 | 上海瑞勇实业有限公司 | RO dense water standard discharge technology in reclaimed water reuse |
-
2013
- 2013-01-11 CN CN2013100098132A patent/CN103073124A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62294491A (en) * | 1986-06-11 | 1987-12-21 | Hitachi Plant Eng & Constr Co Ltd | Treatment of waste water incorporating gallium and arsenic |
| CN1686870A (en) * | 2005-03-31 | 2005-10-26 | 苏州市环境工程有限责任公司 | Technique for processing reclamation of industrial wastewater from printing electronic circuit board |
| JP2007021350A (en) * | 2005-07-15 | 2007-02-01 | Seiichi Manabe | Removal method of toxic substance in exuded water from least controlled landfill site |
| KR100804245B1 (en) * | 2006-09-08 | 2008-02-18 | 재단법인 포항산업과학연구원 | Method for removing heavy metal and color from landfill leachates using steelmaking slag |
| CN101244860A (en) * | 2008-03-28 | 2008-08-20 | 北京清大国华环保科技有限公司 | Extremely-high concentration multi-species heavy metal waste liquid treatment method and apparatus |
| CN102190392A (en) * | 2010-03-12 | 2011-09-21 | 上海瑞勇实业有限公司 | RO dense water standard discharge technology in reclaimed water reuse |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482797A (en) * | 2013-10-14 | 2014-01-01 | 哈尔滨工业大学深圳研究生院 | Process and device for removing hypophosphites and phosphites by advanced oxidation coupling technique |
| CN103482797B (en) * | 2013-10-14 | 2015-04-22 | 哈尔滨工业大学深圳研究生院 | Device for removing hypophosphites and phosphites by advanced oxidation coupling technique |
| CN104211225A (en) * | 2014-09-12 | 2014-12-17 | 中南林业科技大学 | Multiple complex treatment method for heavy metal sewage |
| CN109626666A (en) * | 2019-02-25 | 2019-04-16 | 宁波长华长盛汽车零部件有限公司 | Efficient waste water treatment system |
| CN111747595A (en) * | 2019-03-29 | 2020-10-09 | 温州桂森环境科技有限公司 | Waste water purification process in incineration slag treatment process |
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Application publication date: 20130501 |