CN104787828A - Water treatment method for removing pollution through singlet oxygen dissolved air flotation - Google Patents
Water treatment method for removing pollution through singlet oxygen dissolved air flotation Download PDFInfo
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- CN104787828A CN104787828A CN201510233053.2A CN201510233053A CN104787828A CN 104787828 A CN104787828 A CN 104787828A CN 201510233053 A CN201510233053 A CN 201510233053A CN 104787828 A CN104787828 A CN 104787828A
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Abstract
The invention discloses a water treatment method for removing pollution through singlet oxygen dissolved air flotation, relates to a multifunctional water treatment method with integrated separation and oxidation pollution removal, and solves the problem that organic pollutants in water are hard to remove by using a conventional air flotation process. According to the water treatment method, a peroxymonosulfate solution is added into backflow water of a dissolved air flotation process, the backflow water is fed into a pressure dissolved air tank to form pressurized dissolved air water with peroxymonosulfate, a great amount of micro bubbles with high-activity singlet oxygen due to cavatition formed through release of a releaser, solid granules and dissoluble organic pollutants in water and the micro bubbles float up due to the adhesion function, meanwhile the singlet oxygen in the micro bubbles can act on the adhered organic pollutants, and thus pollution can be removed through oxidation and separation together. The water treatment method disclosed by the invention is high in organic pollutant removal efficiency, free of toxic or harmful byproduct and low in operation cost, needs no extra equipment, and is suitable for large-scale application in the drinking water and sewage treatment process.
Description
Technical field
The present invention relates to a kind of water treatment method, be specifically related to a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution.
Background technology
By Bubble-floating Method as one efficiently, solid-liquid separation technique fast, be widely used in the purifying treatment of low temperature, low turbid, algae blooms water, and municipal effluent and Industrial Wastewater Treatment.By Bubble-floating Method adheres to mutually by producing solid impurity or dissolubility pollutant in a large amount of micro-bubbles and water, forms the air float body that density is less than water, makes it form scum silica frost at the effect float downward of buoyancy to the water surface, to reach the object of solid-liquid separation.Air supporting process is different according to the producing method of bubble, can be divided into electrofloatation, gas distribution air supporting, air-dissolving air-float, and wherein partial reflux formula pressure air-dissolving air-float is the most frequently used technique of water treatment.
Singlet oxygen (
1o
2) as a kind of molecular oxygen being in excited state, with superoxide radical (O
2 -), hydroxyl radical free radical (OH), potentiometric titrations (SO
4 -) isoreactivity oxygenate kind is similar, chemical property is active, unstable, be widespread in nature, one of the longest active oxygens related in field such as chemistry, environment, medical science, have that oxidation capacity is strong, reactive behavior is high, the survival time is short, do not produce the features such as poisonous and harmful by product after oxidation, belong to green, environmentally friendly oxygenant.
Summary of the invention
The object of this invention is to provide a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution, solve the problem that traditional air-float technology is difficult to remove organic pollutants.The present invention while air-float technology carries out solid-liquid separation, utilize produce in system high reactivity singlet oxygen (
1o
2) oxidation removal is carried out to organic pollutants, be a kind of multifunctional water treatment process collecting oxidation and be separated into one.
A kind of water treatment method of singlet oxygen air-dissolving air-float depollution that utilizes of the present invention is realized by following steps:
One, permonosulphuric acid salts solution is joined in the recirculation water of dissolved air flotation process, squeezed in pressure air-dissolving tank by pressure pump, in pressure air-dissolving tank, squeeze into pressurized air by air compressor machine, form pressure air-dissolving water; Wherein, permonosulphuric acid salts solution concentration is in the runback water 0.5 ~ 500mg/L;
Two, discharged by reliever by the pressure air-dissolving water of step one, the microbubble produced containing singlet oxygen enters in pending water and carries out being oxidized, being separated; Again after draining, deslagging, namely complete the described water treatment utilizing singlet oxygen air-dissolving air-float depollution; Wherein, described pending water is source water, sewage or Sewage Plant secondary effluent; Described peroxy-monosulfate is one or more mixtures be mixed by any ratio in permonosulphuric acid sodium, permonosulphuric acid potassium, permonosulphuric acid ammonium, permonosulphuric acid calcium, permonosulphuric acid magnesium.
The pressurized air squeezed into by air compressor machine in a large number can be dissolved after the recirculation water that the present invention contains peroxy-monosulfate enters pressure air-dissolving tank, form pressure air-dissolving water.
Of the present inventionly a kind ofly utilize in the water technology of singlet oxygen air-dissolving air-float depollution, pressure air-dissolving water can form Hydrodynamic cavitation phenomenon when reliever discharges, peroxy-monosulfate (PMS) is decomposed produce the extremely strong singlet oxygen of oxidation capacity (
1o
2), in the process that microbubble rises, singlet oxygen and the organic pollutant rapid action adhering to microbubble surface, carry out oxide treatment to it, reaches oxidation and the object being separated common depollution.
Peroxy-monosulfate described in a kind of water technology utilizing singlet oxygen air-dissolving air-float depollution of the present invention is permonosulphuric acid sodium (NaHSO
5), permonosulphuric acid potassium (KHSO
5), permonosulphuric acid ammonium (NH
4hSO
5), permonosulphuric acid calcium (Ca (HSO
5)
2), permonosulphuric acid magnesium (Mg (HSO
5)
2) in the mixture of one or more.
Of the present inventionly a kind ofly permonosulphuric acid salts solution described in the water technology of singlet oxygen air-dissolving air-float depollution is utilized to be replaced by the composite solution of peroxy-monosulfate and alkali, wherein the mol ratio of peroxy-monosulfate and alkali is 1:1 ~ 10, adding of alkali can regulate the pH value of recirculation water 6 ~ 9, make peroxy-monosulfate in pressure air-dissolving water under the effect of Hydrodynamic cavitation phenomenon, more easily decompose produce the extremely strong singlet oxygen of oxidation capacity (
1o
2).Wherein, peroxy-monosulfate is permonosulphuric acid sodium (NaHSO
5), permonosulphuric acid potassium (KHSO
5), permonosulphuric acid ammonium (NH
4hSO
5), permonosulphuric acid calcium (Ca (HSO
5)
2), permonosulphuric acid magnesium (Mg (HSO
5)
2) in the mixture of one or more; Alkali is the mixture of one or more in potassium hydroxide, sodium hydroxide, calcium hydroxide, sodium carbonate, salt of wormwood, sodium bicarbonate, saleratus.
A kind of water technology utilizing singlet oxygen air-dissolving air-float depollution of the present invention, tool has the following advantages: Green Oxidant peroxy-monosulfate is as pulverulent solids stable chemical nature, and shipping storage is convenient, and operation is simple; Compared with traditional air-float technology, while carrying out solid-liquid separation, achieve the oxidation removal to organic pollutant; Compared with ozone dissolved air flotation process, running cost is low, and technique is simple, does not need the pure oxygen source of the gas increasing ozone generating-device and produce needed for ozone; The environmentally friendly singlet oxygen with strong oxidizing property produced, does not produce poisonous and harmful by product in depollution process, avoids the problem easily producing bromate by product in ozone oxidation process; Depollution efficiency is high, not only can remove organic pollutant (as: endocrine disrupter, medicine, personal-care supplies, cause and smell organism) but also the effect of sterilization and disinfection can be played, large-scale application can be carried out in tap water and sewage treatment process.
Accompanying drawing explanation
Fig. 1 is a kind of water treatment method artwork utilizing singlet oxygen air-dissolving air-float depollution in embodiment one;
Fig. 2 is a kind of oxidation removal efficiency diagram of water treatment method to organic pollutant utilizing singlet oxygen air-dissolving air-float depollution in embodiment two; Wherein, the water treatment method removal efficiency figure of ■ to be traditional air flotation technology removal efficiency figure, be embodiment ten.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: present embodiment is a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution, is realized by following steps:
One, permonosulphuric acid salts solution is joined in the recirculation water of dissolved air flotation process, squeezed in pressure air-dissolving tank by pressure pump, in pressure air-dissolving tank, squeeze into pressurized air by air compressor machine, form pressure air-dissolving water; Wherein, permonosulphuric acid salts solution concentration is in the runback water 0.5 ~ 500mg/L;
Two, the pressure air-dissolving water of step one is discharged by reliever, produce containing singlet oxygen (
1o
2) microbubble enter in pending water and carry out being oxidized, being separated; Again after draining, deslagging, namely complete the described water treatment utilizing singlet oxygen air-dissolving air-float depollution; Wherein, described pending water is source water, sewage or Sewage Plant secondary effluent; Described peroxy-monosulfate is one or more mixtures be mixed by any ratio in permonosulphuric acid sodium, permonosulphuric acid potassium, permonosulphuric acid ammonium, permonosulphuric acid calcium, permonosulphuric acid magnesium.
The water treatment technological process of present embodiment is shown in Fig. 1.
The a kind of of present embodiment utilizes in the water technology of singlet oxygen air-dissolving air-float depollution, pressure air-dissolving water can form Hydrodynamic cavitation phenomenon when reliever discharges, peroxy-monosulfate (PMS) is decomposed produce the extremely strong singlet oxygen of oxidation capacity (
1o
2), in the process that microbubble rises, singlet oxygen and the organic pollutant rapid action adhering to microbubble surface, carry out oxide treatment to it, reaches oxidation and the object being separated common depollution.
A kind of water technology utilizing singlet oxygen air-dissolving air-float depollution of present embodiment, tool has the following advantages: Green Oxidant peroxy-monosulfate is as pulverulent solids stable chemical nature, and shipping storage is convenient, and operation is simple; Compared with traditional air-float technology, while carrying out solid-liquid separation, achieve the oxidation removal to organic pollutant; Compared with ozone dissolved air flotation process, running cost is low, and technique is simple, does not need the pure oxygen source of the gas increasing ozone generating-device and produce needed for ozone; The environmentally friendly singlet oxygen with strong oxidizing property produced, does not produce poisonous and harmful by product in depollution process, avoids the problem easily producing bromate by product in ozone oxidation process; Depollution efficiency is high, not only can remove organic pollutant (as: endocrine disrupter, medicine, personal-care supplies, cause and smell organism) but also the effect of sterilization and disinfection can be played, large-scale application can be carried out in tap water and sewage treatment process.
Embodiment two: present embodiment and embodiment one unlike: peroxy-monosulfate is permonosulphuric acid sodium (NaHSO
5), permonosulphuric acid potassium (KHSO
5), permonosulphuric acid ammonium (NH
4hSO
5), permonosulphuric acid calcium (Ca (HSO
5)
2), permonosulphuric acid magnesium (Mg (HSO
5)
2) in one or more mixtures be mixed by any ratio.Other parameter is identical with embodiment one.
Embodiment three: one of present embodiment and embodiment one to two unlike: peroxy-monosulfate concentration is in the runback water 1 ~ 450mg/L.Other step and parameter identical with one of embodiment one to two.
Embodiment four: one of present embodiment and embodiment one to three unlike: the concentration of peroxy-monosulfate in pending water is 2 ~ 400mg/L.Other step and parameter identical with one of embodiment one to three.
Embodiment five: one of present embodiment and embodiment one to four unlike: the concentration of peroxy-monosulfate in pending water is 5 ~ 350mg/L.Other step and parameter identical with one of embodiment one to four.
Embodiment six: one of present embodiment and embodiment one to five unlike: the concentration of peroxy-monosulfate in pending water is 10 ~ 300mg/L.Other step and parameter identical with one of embodiment one to five.
Embodiment seven: one of present embodiment and embodiment one to six unlike: the concentration of peroxy-monosulfate in pending water is 20 ~ 250mg/L.Other step and parameter identical with one of embodiment one to six.
Embodiment eight: one of present embodiment and embodiment one to seven unlike: the concentration of peroxy-monosulfate in pending water is 30 ~ 200mg/L.Other step and parameter identical with one of embodiment one to seven.
Embodiment nine: one of present embodiment and embodiment one to eight unlike: the concentration of peroxy-monosulfate in pending water is 50 ~ 150mg/L.Other step and parameter identical with one of embodiment one to eight.
Embodiment ten: one of present embodiment and embodiment one to nine unlike: the concentration of peroxy-monosulfate in pending water is 100mg/L.Other step and parameter identical with one of embodiment one to nine.
Embodiment 11: one of present embodiment and embodiment one to nine unlike: permonosulphuric acid salts solution replaces with the composite solution of peroxy-monosulfate and alkali, wherein, the mol ratio of peroxy-monosulfate and alkali is 1:1 ~ 10, and peroxy-monosulfate is the mixture of one or more in permonosulphuric acid sodium, permonosulphuric acid potassium, permonosulphuric acid ammonium, permonosulphuric acid calcium, permonosulphuric acid magnesium; Alkali is the mixture of one or more in potassium hydroxide, sodium hydroxide, calcium hydroxide, sodium carbonate, salt of wormwood, sodium bicarbonate, saleratus.Other step and parameter identical with one of embodiment one to ten.
Beneficial effect of the present invention is verified by following examples:
A kind of water treatment method of singlet oxygen air-dissolving air-float depollution that utilizes of the present embodiment carries out according to the following steps: a, join in the recirculation water of dissolved air flotation process by peroxy-monosulfate (PMS) solution, squeezed in pressure air-dissolving tank by pressure pump, wherein peroxy-monosulfate concentration is in the runback water 100mg/L; The pressurized air squeezed into by air compressor machine in a large number can be dissolved after b, recirculation water containing 100mg/L peroxy-monosulfate enter pressure air-dissolving tank, form pressure air-dissolving water; C, to be discharged by reliever containing the pressure air-dissolving water of peroxy-monosulfate in air flotation pool, produce a large amount of microbubble, simultaneously peroxy-monosulfate in dispose procedure due to Hydrodynamic cavitation effect can produce high reactivity singlet oxygen (
1o
2), microbubble containing singlet oxygen enters in pending water, wherein contains common endocrine disrupter (dihydroxyphenyl propane, oestrone, estradiol, trihydroxy-oestrin, nonyl phenol, progesterone), antibiotic medicine (tsiklomitsin, duomycin, terramycin, Streptomycin sulphate, cephalo, amoxycilline Trihydrate bp, sulfamethoxazole), personal-care supplies (triclosan), agricultural chemicals (atrazine) in pending water; Float together with d, microbubble containing singlet oxygen adhere to mutually with the solid particulate matter in pending water or solvability organic pollutant, the singlet oxygen simultaneously in microbubble can act on organic pollutant, carries out being oxidized, being separated, common depollution; E, draining, deslagging, namely complete water treatment.
The organic pollutant removal rate of the present embodiment is shown in Fig. 2, as shown in Figure 2, the clearance of tradition air-float technology to dihydroxyphenyl propane, oestrone, estradiol, trihydroxy-oestrin, nonyl phenol, progesterone, tsiklomitsin, duomycin, terramycin, Streptomycin sulphate, cephalo, amoxycilline Trihydrate bp, sulfamethoxazole, triclosan, atrazine only has about 10%, and this removal effect is mainly produced by the diluting effect of recirculation water, therefore traditional air-float technology is difficult to remove organic pollutant.Compared to traditional air-float technology, the water technology of singlet oxygen air-dissolving air-float depollution that utilizes of the present invention can reach more than 90% to the clearance of dihydroxyphenyl propane, oestrone, estradiol, trihydroxy-oestrin, nonyl phenol, progesterone, tsiklomitsin, duomycin, terramycin, Streptomycin sulphate, cephalo, amoxycilline Trihydrate bp, sulfamethoxazole, triclosan, atrazine, as can be seen here, water technology of the present invention is removing the advantage having in organic pollutants and relatively give prominence to.
Embodiment two
The present embodiment and embodiment one unlike: permonosulphuric acid salts solution replaced by the composite solution of peroxy-monosulfate and alkali, and wherein the mol ratio of peroxy-monosulfate and alkali is 1:1 ~ 10.Wherein, peroxy-monosulfate is permonosulphuric acid sodium (NaHSO
5), permonosulphuric acid potassium (KHSO
5), permonosulphuric acid ammonium (NH
4hSO
5), permonosulphuric acid calcium (Ca (HSO
5)
2), permonosulphuric acid magnesium (Mg (HSO
5)
2) in the mixture of one or more; Alkali is the mixture of one or more in potassium hydroxide, sodium hydroxide, calcium hydroxide, sodium carbonate, salt of wormwood, sodium bicarbonate, saleratus.
When in the present embodiment, peroxy-monosulfate is wherein several mixture, with arbitrarily than mixing; When alkali is wherein several mixtures, with arbitrarily than mixing.
In the present embodiment, adding of alkali can regulate the pH value of recirculation water 6 ~ 9, makes peroxy-monosulfate in pressure air-dissolving water under the effect of Hydrodynamic cavitation phenomenon, more easily decompose produce the extremely strong singlet oxygen of oxidation capacity (
1o
2).
Claims (10)
1. utilize a water treatment method for singlet oxygen air-dissolving air-float depollution, it is characterized in that it is realized by following steps:
One, permonosulphuric acid salts solution is joined in the recirculation water of dissolved air flotation process, squeezed in pressure air-dissolving tank by pressure pump, in pressure air-dissolving tank, squeeze into pressurized air by air compressor machine, form pressure air-dissolving water; Wherein, permonosulphuric acid salts solution concentration is in the runback water 0.5 ~ 500mg/L; Two, discharged by reliever by the pressure air-dissolving water of step one, the microbubble produced containing singlet oxygen enters in pending water and carries out being oxidized, being separated; Again after draining, deslagging, namely complete the described water treatment utilizing singlet oxygen air-dissolving air-float depollution; Wherein, described pending water is source water, sewage or Sewage Plant secondary effluent; Described peroxy-monosulfate is one or more mixtures be mixed by any ratio in permonosulphuric acid sodium, permonosulphuric acid potassium, permonosulphuric acid ammonium, permonosulphuric acid calcium, permonosulphuric acid magnesium.
2. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 1, is characterized in that described peroxy-monosulfate concentration in pending water is 1 ~ 450mg/L.
3. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 2, is characterized in that described peroxy-monosulfate concentration in pending water is 2 ~ 400mg/L.
4. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 3, is characterized in that described peroxy-monosulfate concentration in pending water is 5 ~ 350mg/L.
5. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 4, is characterized in that described peroxy-monosulfate concentration in pending water is 10 ~ 300mg/L.
6. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 5, is characterized in that described peroxy-monosulfate concentration in pending water is 20 ~ 250mg/L.
7. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 6, is characterized in that described peroxy-monosulfate concentration in pending water is 30 ~ 200mg/L.
8. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 7, is characterized in that described peroxy-monosulfate concentration in pending water is 50 ~ 150mg/L.
9. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 8, is characterized in that described peroxy-monosulfate concentration in pending water is 100mg/L.
10. a kind of water treatment method utilizing singlet oxygen air-dissolving air-float depollution according to claim 1, it is characterized in that permonosulphuric acid salts solution replaces with the composite solution of peroxy-monosulfate and alkali, wherein, the mol ratio of peroxy-monosulfate and alkali is 1:1 ~ 10, and peroxy-monosulfate is the mixture of one or more in permonosulphuric acid sodium, permonosulphuric acid potassium, permonosulphuric acid ammonium, permonosulphuric acid calcium, permonosulphuric acid magnesium; Alkali is the mixture of one or more in potassium hydroxide, sodium hydroxide, calcium hydroxide, sodium carbonate, salt of wormwood, sodium bicarbonate, saleratus.
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| CN105347457A (en) * | 2015-11-16 | 2016-02-24 | 哈尔滨理工大学 | Method for singlet state oxygen treatment on landfill leachate |
| CN105600910A (en) * | 2015-11-16 | 2016-05-25 | 哈尔滨理工大学 | Water treatment method for catalyzing peroxide to generate singlet oxygen to remove pollution |
| CN113171739A (en) * | 2021-04-25 | 2021-07-27 | 中南民族大学 | Method for generating superoxide anion free radical by catalytically activating bromate and application of superoxide anion free radical generated by method |
| CN113698020A (en) * | 2021-08-30 | 2021-11-26 | 衢州华友钴新材料有限公司 | Method for reducing chlorine and COD (chemical oxygen demand) of ammonium sulfate concentrated mother liquor |
| CN115259339A (en) * | 2022-08-24 | 2022-11-01 | 同济大学 | Method for degrading PPCPs by using trivalent ruthenium activated persulfate |
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