CN103304076A - Catalytic micro-electrolysis water treatment equipment and process method thereof - Google Patents
Catalytic micro-electrolysis water treatment equipment and process method thereof Download PDFInfo
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- CN103304076A CN103304076A CN2013102318353A CN201310231835A CN103304076A CN 103304076 A CN103304076 A CN 103304076A CN 2013102318353 A CN2013102318353 A CN 2013102318353A CN 201310231835 A CN201310231835 A CN 201310231835A CN 103304076 A CN103304076 A CN 103304076A
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Abstract
The invention discloses catalytic micro-electrolysis water treatment equipment and a process method thereof and relates to wastewater treatment equipment and a process method thereof. According to the technical scheme, the catalytic micro-electrolysis water treatment equipment comprises an acid mixer 1, a micro-electrolysis reactor 2, a catalytic oxidant reactor 3, a settling pond 4a, a settling pond 4b, an alkali mixer 5, an air compressor 6 and dosing pumps 7a, 7b and 7c, wherein the acid mixer 1, the micro-electrolysis reactor 2, the catalytic oxidant reactor 3 and the alkali mixer 5 are connected with the air compressor 6 through a pipeline; the outlet of the acid mixer 1 is connected with the inlet of the micro-electrolysis reactor 2; the outlet of the micro-electrolysis reactor 2 is connected with the inlet of the catalytic oxidant reactor 3; the outlet of the catalytic oxidant reactor 3 is connected with the inlet of the settling pond 4a; the outlet of the settling pond 4a is connected with the inlet of the alkali mixer 5; the outlet of the alkali mixer 5 is connected with the inlet of the settling pond 4b; and the dosing pumps 7a, 7b and 7c are respectively connected with the acid mixer 1, the catalytic oxidant reactor 3 and the alkali mixer 5. The problems in membrane treatment that the cost is high and the concentrated water cannot be treated are solved.
Description
Technical field
Patent of the present invention relates to a kind of sewage treatment equipment and processing method thereof, be specifically related to a kind of catalytic type micro-electrolytic water treatment facility and processing method thereof, be applicable to percolate after trade effluent, part heavy metal wastewater thereby and some biochemical treatments of high density bio-refractory and the processing of aged percolate.
Background technology
At present, China is for the trade effluent of high density bio-refractory, and method commonly used is to adopt coagulation chemical treatment method and equipment.This technology and equipment, strict to operational conditions, processing efficiency is not high.
In the processing engineering of the percolate after some biochemical treatments and aged percolate, in order to reach emission standard, according to the refuse leachate treatment technology that " national advanced prevention and cure of pollution exemplary teachings register of 2010 years " concludes, handling method and apparatus commonly used has:
1. " the integrated separation of flocculation sediment+MBR+special membrane " combined technical method and equipment;
2. " electrolysis+UASB+MBR " combined technical method and equipment;
3. " biochemical (anaerobism, anoxic, aerobic)+membrane sepn (micro-filtration, ultrafiltration, nanofiltration, reverse osmosis) " combined technical method and equipment;
4. " flocculation sediment → stripping → coagulating sedimentation → anaerobic biological → catalytic oxidation → membrane bioreactor → nanofiltration " combined technical method and equipment.
These four kinds of technology problems to be solved have:
1. problems such as film pollution to be solved and cleaning, operation stability, reduction working cost.
2. electrolysis to be solved is as pretreatment technology expense height, to the problem of extraordinary pollutent poor selectivity.
3. and 4. to be solved further cutting down the consumption of energy and the problem of cost.
Summary of the invention
Deficiency for the treatment technology of the trade effluent that overcomes existing high density bio-refractory, percolate after some biochemical treatments and aged percolate, the invention provides a kind of catalytic type micro-electrolytic water treatment facility and processing method thereof, solved film problem such as handle that the expense height, the dense water that bring can't be handled.Technical solution of the present invention is: a kind of catalytic type micro-electrolytic water treatment facility is characterized in that: comprise sour mixing tank 1, micro-electrolysis reactor 2, catalytic oxidant reactor 3, settling tank 4a, settling tank 4b, alkali mixing tank 5, air compressor machine 6, dosing pump 7a, 7b, 7c; Described sour mixing tank 1, micro-electrolysis reactor 2, catalytic oxidant reactor 3, alkali mixing tank 5 link to each other with air compressor machine 6 by pipeline; The outlet of acid mixing tank 1 links to each other with the import of micro-electrolysis reactor 2, the outlet of micro-electrolysis reactor 2 links to each other with 3 imports of catalytic oxidant reactor, 3 outlets of catalytic oxidant reactor link to each other with settling tank 4a import, settling tank 4a outlet links to each other with 5 imports of alkali mixing tank, and 5 outlets of alkali mixing tank link to each other with settling tank 4b import; Described dosing pump 7a, 7b, 7c link to each other with sour mixing tank 1, catalytic oxidant reactor 3, alkali mixing tank 5 respectively;
Increase the aeration parts in the described micro-electrolysis reactor 2, the aeration parts by one be responsible for 8 and 4-8 root arm 9 forms, the radical of the person in charge 8 and arm 9 sizes, arm is relevant with the size of aeration rate; Carry out precision drilling the person in charge 8 with arm 9 both sides, the aperture is diameter 2-5mm, is conducive to efficient oxygen transmission and utilization.The micro-electrolysis reactor structure is transformed, increased the aeration parts, aeration in the micro-electrolysis reactor can reduce the Fe-C plate knot, and increasing is to the clearance of pollutents such as COD;
A kind of method of work of catalytic type micro-electrolytic water treatment facility is:
The first step at first is delivered to waste water in the sour mixing tank 1, and dosing pump 7a adds acid medicine, adjusts the pH value between 3-4, starts air compressor machine 6 aerations, and waste water and medicament are fully mixed;
In second step, the waste water in the sour mixing tank 1 is delivered in the micro-electrolysis reactor 2 aerated reaction 1-2h; 2 waste water in the micro-electrolysis reactor is delivered in the catalytic oxidant mixing tank 3, and dosing pump 7b adds the catalyzed oxidation agent hydrogen peroxide, adjusts the pH value between 3-4, aerated reaction 1-2h;
The 3rd step was delivered to settling tank 4a with the waste water in the catalytic oxidant mixing tank 3, treat that flocs unit staticly settles in the water after, supernatant liquor is delivered in the alkali mixing tank 5, adds basic agent by dosing pump 7c, adjusts the pH value between 7-8, aerated reaction 5-10min;
The 4th step was delivered to settling tank 4b with the waste water in the alkali mixing tank 5, treat that flocs unit staticly settles in the water after, supernatant liquor qualified discharge or be delivered to the next stage treatment process until up to standard.
Described micro-electrolysis reactor iron carbon filler layer adopts iron filings and coke granule, and when waste iron filing and coke consumption volume ratio=1:2-1:4, the COD clearance is higher, and removal effect is better.During volume ratio=1:3, the COD clearance reaches 58.4%, removal effect the best.Be deposited in together for fear of waste iron filing that hardening appears in long reaction time long afterwards, so the particle diameter of coke probably is 1～2cm.The filler supporting layer adopts the thick pebbles of 150mm-200mm, prevents that the packing layer particle from passing supporting plate and stopping up the prosopyle.
Technique effect of the present invention:
Common micro-electrolysis reactor structure is transformed, increased the aeration parts, aeration in the micro-electrolysis reactor can reduce the Fe-C plate knot, and increasing is to the clearance of pollutents such as COD;
Add catalytic oxidant in the water outlet after common micro-electrolysis reactor is handled, make Fe
2+Produce complex reaction mechanism with catalytic oxidant, obviously improve the place to go rate of pollutent;
Utilize present technique that the waste water of high density bio-refractory, aged percolate are carried out pre-treatment, the biodegradability of waste water is significantly increased, can improve 0.2-0.3, good with follow-up biochemical treatment matching, can reach national specified discharge standard after making the wastewater treatment of high density bio-refractory.
Percolate after present technique and the some other biochemical treatment and the treatment technology of aged percolate compare, and as comparing with membrane technique, this technology building gross investment reduces 30% approximately, and operation cost saves 55%.Therefore, present technique is the water technology of a kind of high-level efficiency, less energy-consumption, and has solved film problem such as handle that the expense height, the dense water that bring can't be handled.Technical superiority is mainly reflected in:
(1) material therefor is simple and easy in the catalytic type microelectrolysis process, with waste iron filing and lower cost for material such as coke or gac.
(2) not power consumption of catalytic type micro-electrolysis reaction process, and can produce redox, effects such as electric agglomeration, the nascent state Fe that electrode reaction produces
2+Be a kind of absorption, contain and the great coagulating agent of complex ability, so it is many that the characteristics of the little electrolysis of catalytic type are mechanism of action, synergetic property is strong, and net effect is remarkable, good decolorizing effect, can improve wastewater biodegradability, B/C improves 0.2-0.3, and is good with follow-up biochemical treatment matching, easy and simple to handle, working cost is low; Its COD clearance can reach 75-85%, and percent of decolourization adopts special its long-time running better effects if of efficient catalytic type micro-electrolysis reaction equipment at 80-95%.
Description of drawings
Accompanying drawing 1 is the present device structural representation
Acid mixing tank 1, micro-electrolysis reactor 2, catalytic oxidant reactor 3, settling tank 4a, settling tank 4b, alkali mixing tank 5, air compressor machine 6, dosing pump 7a, dosing pump 7b, dosing pump 7c
Accompanying drawing 2 is aerating apparatus structural representation of the present invention
The person in charge 8, arm 9
Accompanying drawing 3 is process flow sheet of the present invention.
Embodiment
Embodiment 1:
Handle 100 m3/d sanitary filling field diafiltration waste water, take a kind of catalytic type micro-electrolytic water of the present invention treatment facility, order is placed sour mixing tank 1, micro-electrolysis reactor 2, catalytic oxidant reactor 3, settling tank 4a, settling tank 4b, alkali mixing tank 5, air compressor machine 6, dosing pump 7a, 7b, 7c; Then described sour mixing tank 1, micro-electrolysis reactor 2, catalytic oxidant reactor 3, alkali mixing tank 5 are linked to each other with air compressor machine 6 by pipeline; The outlet of acid mixing tank 1 links to each other with the import of micro-electrolysis reactor 2, the outlet of micro-electrolysis reactor 2 links to each other with 3 imports of catalytic oxidant reactor, 3 outlets of catalytic oxidant reactor link to each other with settling tank 4a import, settling tank 4a outlet links to each other with 5 imports of alkali mixing tank, and 5 outlets of alkali mixing tank link to each other with settling tank 4b import; Described dosing pump 7a, 7b, 7c link to each other with sour mixing tank 1, catalytic oxidant reactor 3, alkali mixing tank 5 respectively;
Increase the aeration parts in micro-electrolysis reactor 2, aeration rate is 400m
3/ d, aeration parts are responsible for 8 and 6 arms 9 by one and form, and carry out precision drilling the person in charge 8 with arm 9 both sides, and the aperture is 4mm.
Treatment process is:
At first 100 tons of sanitary filling field diafiltration waste water are delivered in the sour mixing tank 1, dosing pump 7a adds 375 liters of the hydrochloric acid of 30% concentration, and adjusting pH value is 3.5, and startup air compressor machine 6 aerations fully mix waste water and medicament;
In second step, the waste water in the sour mixing tank 1 is delivered in the micro-electrolysis reactor 2 aerated reaction 1.5h; 2 waste water in the micro-electrolysis reactor is delivered in the catalytic oxidant mixing tank 3, and dosing pump 7b adds 125 liters of catalyzed oxidation agent hydrogen peroxides, and adjusting the pH value is 3, aerated reaction 1.5h;
The 3rd step was delivered to settling tank 4a with the waste water in the catalytic oxidant mixing tank 3, treat that flocs unit staticly settles in the water after, supernatant liquor is delivered in the alkali mixing tank 5, add 1875 liters in the calcium hydroxide of basic agent 10% concentration by dosing pump 7c, adjusting the pH value is 7.5, aerated reaction 5min;
The 4th step was delivered to settling tank 4b with the waste water in the alkali mixing tank 5, treat that flocs unit staticly settles in the water after, supernatant liquor qualified discharge or be delivered to the next stage treatment process until up to standard.
By the sanitary filling field diafiltration waste water that the present invention handles, the water treatment data see Table 1:
Table: percolate water quality behind the 1 catalytic type micro-electrolysis reaction
| Test water | BOD5/(mg/L) | COD/(mg/L) | PH value | NH4 +-N/(mg/L) | Colourity |
| The little electrolysis of catalytic type | 35 | 101 | 5.5 | 10.4 | 20 |
The percolate emission standard should satisfy " life percolate landfill yard pollutes control criterion " (GB16889-2008) standard.Specifically see Table 2.
Table 2 life percolate landfill yard pollutes control criterion
By the data of table 1 and " life percolate landfill yard pollutes control criterion " contrast, find that the percolate BOD5 index after the process catalytic type micro-electrolysis reaction advanced treatment is that 35mg/L, COD index are that 101 mg/L are below standard, but the also value of being near the mark.Therefore only needing that water outlet is delivered to that next stage biochemical treatment operation deals with slightly can be up to standard.
Embodiment 2:
Handle 80 m
3/ d printed-wiring board (PWB) waste water, take a kind of catalytic type micro-electrolytic water of the present invention treatment facility, order is placed sour mixing tank 1, micro-electrolysis reactor 2, catalytic oxidant reactor 3, settling tank 4a, settling tank 4b, alkali mixing tank 5, air compressor machine 6, dosing pump 7a, 7b, 7c; Then described sour mixing tank 1, micro-electrolysis reactor 2, catalytic oxidant reactor 3, alkali mixing tank 5 are linked to each other with air compressor machine 6 by pipeline; The outlet of acid mixing tank 1 links to each other with the import of micro-electrolysis reactor 2, the outlet of micro-electrolysis reactor 2 links to each other with 3 imports of catalytic oxidant reactor, 3 outlets of catalytic oxidant reactor link to each other with settling tank 4a import, settling tank 4a outlet links to each other with 5 imports of alkali mixing tank, and 5 outlets of alkali mixing tank link to each other with settling tank 4b import; Described dosing pump 7a, 7b, 7c link to each other with sour mixing tank 1, catalytic oxidant reactor 3, alkali mixing tank 5 respectively;
Increase the aeration parts in micro-electrolysis reactor 2, aeration rate is 320 m
3/ d, aeration parts are responsible for 8 and 4 arms 9 by one and form, and carry out precision drilling the person in charge 8 with arm 9 both sides, and the aperture is 3mm.
Treatment process is:
At first 80 tons of printed-wiring board (PWB) waste water are delivered in the sour mixing tank 1, dosing pump 7a adds 375 liters in 30% sulfuric acid, and adjusting the pH value is 3, starts air compressor machine 6 aerations, and waste water and medicament are fully mixed;
In second step, the waste water in the sour mixing tank 1 is delivered in the micro-electrolysis reactor 2 aerated reaction 2h; 2 waste water in the micro-electrolysis reactor is delivered in the catalytic oxidant mixing tank 3, and dosing pump 7b adds 100 liters of catalyzed oxidation agent hydrogen peroxides, and adjusting the pH value is 4, aerated reaction 2h;
The 3rd step was delivered to settling tank 4a with the waste water in the catalytic oxidant mixing tank 3, treat that flocs unit staticly settles in the water after, supernatant liquor is delivered in the alkali mixing tank 5, add 900 liters in the sodium hydroxide of basic agent concentration 20% by dosing pump 7c, adjusting the pH value is 7, aerated reaction 5min;
The 4th step was delivered to settling tank 4b with the waste water in the alkali mixing tank 5, treat that flocs unit staticly settles in the water after, the supernatant liquor qualified discharge.
By the printed-wiring board (PWB) waste water that the present invention handles, the data of water sample are: heavy metal ion Cr＜1.5mg/L, Cu＜0.5mg/L, total COD removes about 70%, BOD
5/ COD is increased to more than 0.40 by 0.20, and wastewater effluent reaches water white transparency, and stable effluent quality fully can qualified discharge.
Claims (9)
1. a catalytic type micro-electrolytic water treatment facility is characterized in that: comprise sour mixing tank (1), micro-electrolysis reactor (2), catalytic oxidant reactor (3), settling tank (4a), settling tank (4b), alkali mixing tank (5), air compressor machine (6), dosing pump (7a), (7b), (7c); Described sour mixing tank (1), micro-electrolysis reactor (2), catalytic oxidant reactor (3), alkali mixing tank (5) link to each other with air compressor machine (6) by pipeline; The outlet of acid mixing tank (1) links to each other with the import of micro-electrolysis reactor (2), the outlet of micro-electrolysis reactor (2) links to each other with catalytic oxidant reactor (3) import, catalytic oxidant reactor (3) outlet links to each other with settling tank (4a) import, settling tank (4a) outlet links to each other with alkali mixing tank (5) import, and alkali mixing tank (5) outlet links to each other with settling tank (4b) import; Described dosing pump (7a), (7b), (7c) link to each other with sour mixing tank (1), catalytic oxidant reactor (3), alkali mixing tank (5) respectively.
2. catalytic type micro-electrolytic water treatment facility according to claim 1, it is characterized in that: described micro-electrolysis reactor also comprises the aeration parts in (2), the aeration parts are made up of a person in charge (8) and 4-8 root arm (9), and the size of being responsible for the radical of (8) and arm (9) size, arm and aeration rate is relevant; Carry out precision drilling the person in charge (8) with arm (9) both sides, the aperture is diameter 2-5mm.
3. the processing method of a catalytic type micro-electrolytic water treatment facility is:
The first step at first is delivered to waste water in the sour mixing tank (1), and dosing pump (7a) adds acid medicine, adjusts the pH value between 3-4, starts air compressor machine (6) aeration, and aerated reaction 5-10min fully mixes waste water and medicament;
In second step, the waste water in the sour mixing tank (1) is delivered in the micro-electrolysis reactor (2) aerated reaction 1-2h; Waste water in the micro-electrolysis reactor (2) is delivered in the catalytic oxidant mixing tank (3), and dosing pump (7b) adds the catalyzed oxidation agent hydrogen peroxide, adjusts the pH value between 3-4, aerated reaction 1-2h;
The 3rd step was delivered to settling tank (4a) with the waste water in the catalytic oxidant mixing tank (3), treat that flocs unit staticly settles in the water after, supernatant liquor is delivered in the alkali mixing tank (5), add basic agent by dosing pump (7c), adjust the pH value between 7-8, aerated reaction 5-10min;
The 4th step was delivered to settling tank (4b) with the waste water in the alkali mixing tank (5), treat that flocs unit staticly settles in the water after, supernatant liquor qualified discharge or be delivered to the next stage treatment process until up to standard.
4. the processing method of a kind of catalytic type micro-electrolytic water treatment facility according to claim 3, it is characterized in that: described acid medicine is sulfuric acid, hydrochloric acid.
5. the processing method of a kind of catalytic type micro-electrolytic water treatment facility according to claim 3, it is characterized in that: described basic agent is calcium hydroxide, sodium hydroxide or lime.
6. the processing method of a kind of catalytic type micro-electrolytic water treatment facility according to claim 3, it is characterized in that: described catalytic oxidant is hydrogen peroxide.
7. the processing method of a kind of catalytic type micro-electrolytic water treatment facility according to claim 3 is characterized in that: described micro-electrolysis reactor (2) packing layer adopts waste iron filing and coke granule, and volume ratio is 1:2-1:4.
8. the processing method of a kind of catalytic type micro-electrolytic water treatment facility according to claim 7, it is characterized in that: the particle diameter of described coke is 1-2cm.
9. the processing method of a kind of catalytic type micro-electrolytic water treatment facility according to claim 3 is characterized in that: the filler supporting layer is the thick pebbles of 150mm-200mm in the described micro-electrolysis reactor (2).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104496091A (en) * | 2014-12-26 | 2015-04-08 | 东北电力大学 | Treatment method of wastewater containing high-concentration anion surfactant |
| CN107099812A (en) * | 2017-05-26 | 2017-08-29 | 南阳市豫龙源汽车养护有限公司 | A kind of apparatus for electrolyzing and with the device remove carbon combustion-supporting system |
| CN105692800B (en) * | 2016-03-22 | 2018-11-06 | 浙江清华长三角研究院 | A kind of wastewater treatment equipment and method |
| CN110054339A (en) * | 2019-05-17 | 2019-07-26 | 廊坊新奥龙河环保科技有限公司 | Integrated sealed formula high-concentration acidic wastewater danger waste liquor treatment equipment and processing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104496091A (en) * | 2014-12-26 | 2015-04-08 | 东北电力大学 | Treatment method of wastewater containing high-concentration anion surfactant |
| CN104496091B (en) * | 2014-12-26 | 2016-04-27 | 东北电力大学 | A kind of containing high concentration anionic surfactant method of wastewater treatment |
| CN105692800B (en) * | 2016-03-22 | 2018-11-06 | 浙江清华长三角研究院 | A kind of wastewater treatment equipment and method |
| CN107099812A (en) * | 2017-05-26 | 2017-08-29 | 南阳市豫龙源汽车养护有限公司 | A kind of apparatus for electrolyzing and with the device remove carbon combustion-supporting system |
| CN110054339A (en) * | 2019-05-17 | 2019-07-26 | 廊坊新奥龙河环保科技有限公司 | Integrated sealed formula high-concentration acidic wastewater danger waste liquor treatment equipment and processing method |
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Application publication date: 20130918 |