CN1359860A - Process for removing microalgin from water by ferric oxidizing - Google Patents
Process for removing microalgin from water by ferric oxidizing Download PDFInfo
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- CN1359860A CN1359860A CN 00135784 CN00135784A CN1359860A CN 1359860 A CN1359860 A CN 1359860A CN 00135784 CN00135784 CN 00135784 CN 00135784 A CN00135784 A CN 00135784A CN 1359860 A CN1359860 A CN 1359860A
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Abstract
A process for removing microalgin from drinking water includes adding ferrate to the drinking water with 6-10 of pH value, stirring for 10 min, reaction and settling. Its advantages are high removal rate (more than 90%), no secondary pollution and high speed.
Description
The present invention relates to a kind of method that is used for removing the little algae element of tap water.
Along with the aggravation and the nutritive substances such as a large amount of nitrogen phosphorus and organic pollutant of environmental pollution enter receiving water body, in lake all over the world, pond, the river algae especially the blue-green algae wawter bloom be on the rise.In the algae of wawter bloom is taken place, have manyly can produce toxin, as thread anabena, capsule silk algae, algae and Microcystis aeruginosa etc. quiver.The toxin that these blue-green algaes produced can be divided three classes according to the difference of toxic action: polypeptide hepatotoxin, alkaloids neurotoxin and lipopolysaccharides intracellular toxin (Sivonen et al., 1990).Wherein hepatotoxin is divided into again according to its chemical structure: Microcystis aeruginosa hepatotoxin (Microcystin MC) and joint ball algae toxin (Nodularin).MC is ring-type seven peptides, two variable L amino acid and a uncommon amino acid Adda are arranged in its structure, the name of MC isomer promptly based on two variable amino acid, more than 40 kind of isomer (wherein the most common with MC-LR) such as MC-LR, MC-RR, MC-YR have been identified at present.This toxin major part is present in the frustule, and toxin discharges in the entry when cell rupture or aging.MC can suppress the effect of protein phosphatase 2A in the liver cytoplasm or 1, and the mankind drink the water that contains MC, will finally cause diseases such as liver hemorrhage, liver cancer in the accumulation of organs such as liver, kidney, lung.MC causes countries in the world sanitarian's extensive concern to the threat that human health caused recently.At present, control the method for little algae element, studying maximum is exactly with physics (Mouchet andBonnelye, 1998), chemistry (Nicholson et al., 1994), biological (Cousins et al., 1996) etc. mode is handled, external correlative study well afoot, and domestic still do not have this type of report.
The purpose of this invention is to provide a kind of method with little algae element in the high ferro oxidation removal water.
The present invention proposes a kind of method with little algae element in the high ferro oxidation removal water.Ferrate is the sexavalence compound of iron, has extremely strong oxidisability and good multifunctional water quality purifying usefulness in water, the oxidative degradation effect good to hazardous and noxious substances in the water.It has more efficiently oxidative degradation effect than chemical oxidizing agents such as permanganate, chlorine to some the reductibility organic or inorganic pollutent in the water, especially the difficult degradation pollutent is shown more good removal ability, and do not produced any by product that pollutes that water is constituted.Simultaneously, its newly-generated Fe (OH) in oxidising process
3Deng various zwitterions also there being tangible absorption removal effect.2) good sterilization and disinfection effect.Studies show that ferrate and atomic state chlorine have same sterilization effect, and can be to any secondary pollution of water generates when using.3) highly effective coagulation with help the effect of coagulating.Ferric ion and the ferric ion that generates in the redox reaction process thereof all are good inorganic flocculating agents, and its oxidation and adsorption will produce important effect of flocculant.Adopt traditional oxychlorination to remove little algae element, not only remove inefficiency, and because three generations that cause thing bring secondary pollution to water body.Therefore, adopting ferrate oxidation to remove little algae element is a kind ofly to have that important practical is worth and the little removing pollutant method of tap water safely and efficiently.
The invention provides a kind of method that is used for removing the little algae element of tap water, comprising: in the algae-containing water of pH 6-10, add ferrate, stirred 10-60 minute; Toxin is removed in sedimentation behind the stirring reaction.
In the method for the invention, the concentration of the ferrate that adds in the algae-containing water is with FeO
4 2-Densitometer is preferably 10-50mg/L.
In the method for the invention, churning time is preferably 10-60 minute behind the adding ferrate.
In the method for the invention, described stirring preferably divides two steps to carry out, and at first stirs 1-3 minute fast under 250-500rpm, reacts 10-60 minute under the middling speed agitation condition of 50-100rpm then.
Method of the present invention can be carried out with following process:
The present invention is the method that a kind of high ferro oxidation is used for removing the little algae element of tap water.Add the ferrate multipurpose agent in the algae-containing water of pH 6-10, concentration is that 10-50mg/L is (with FeO
4 2-Densitometer), stirred fast 1 minute, in oxidising process, produce a small amount of alumen ustum Fe (OH)
3Colloid reacted 10 minutes under the middling speed agitation condition of 100rpm then at least, and best 30 minutes, along with the increase in reaction times, alumen ustum produced in a large number.Supernatant liquor is drawn in oxidizing, flocculating reaction back sedimentation 30 minutes.To handle the back water sample by Whatman GF/C strainer 0.45 μ m membrane filtration, and regulate pH to 6-7 with HCL or the NaOH of 0.1M.Use Solid-Phase Extraction (SPE) post of Supelco C18 from water sample, to extract toxin.Pillar is used the 10ml washed with methanol earlier, uses the 15ml distilled water flushing again, transports water sample with vacuum pump then, water sample flows through solid-phase extraction column with 5ml/min, use 10ml distilled water at last, 10ml 10% methyl alcohol and 5ml 20% methyl alcohol constantly wash extraction column, take out dry air 2min.With toxin on the 1ml methyl alcohol normal pressure wash-out post.Eluate vacuum-drying, residue 1ml dissolved in distilled water, before sample introduction with the membrane filtration of 0.2 μ m.20 μ l extracts are injected analytical column, and with anti-phase C18 performance liquid chromatographic column, the optical diode sequential detector carries out toxin analysis at 238nm wavelength place.Moving phase is the Ammoniom-Acetate damping fluid of 32% acetonitrile-0.01M pH 6.8, with the 1ml/min flow rate.By contrasting, converse the plain concentration of little algae by peak area with standard.
Algae-containing water is meant the source water that contains blue-green algae, mainly contains the algae that quivers, thread anabena, capsule silk algae and Microcystis aeruginosa etc.The ferrate multipurpose agent is meant the salt of ferric acid, for example potassium ferrate (K
2FeO
4) solid or liquid Na2Fe04 (Na
2FeO
4) solution.Reference Sivonen K, Niemela SI, Lepisto L, et al. (1990) Toxic cyanobacterial (blue-green algae) in finish fresh and coastal waters.Hydrobiologia, 190:267-275.Mouchet P and Bonnelye V. (1998) Solving algae problem:French expertiseand worldwide application.J.Water SRT-Aqua, 47:125-141.Nicholson B C, Rositano J, Burch M D. (1994) Peptide hepatotoxins bychlorine and chloramine.Water Research, 28:1297-1303.Cousins I T, Bealing D J, et al. (1996) Biodegradation of microcystin-LR byindigenous mixed bacterial populations.Water Research, 30:981-985. bent brightness for a long time, woods is stood up, Tian Baozhen, Wang Lili. the research that soil ulmin in the water is removed in the flocculation of (1999) ferrate oxidation. ACTA Scientiae Circumstantiae, 19:510-514.
Description of drawings
Fig. 1 is the degrade liquid chromatogram of little algae element of high ferro.
Below by example the present invention is done to describe in detail.
Embodiment
Alga cells after the 150mg lyophilize is dissolved in the distilled water, is made into the cell suspending liquid of 150mg/100ml, with this suspension of ultrasonic oscillation 20min, then 10, the centrifugal 20min of 000rpm gets its supernatant liquor, and remaining cellular material is dissolved in 50ml again, twice of repetitive operation, merge three times and extract supernatant liquor, add again in the 800ml distilled water, behind the mixing, be divided into two parts, make parallel sample.Add the 30mg solid potassium ferrate then, under the rotating speed of 100rpm stirs, act on 30min, all fade to potassium ferrate.To handle the back water sample and filter, and regulate pH to 6-7 with HCL or the NaOH of 0.1M by Whatman GF/C strainer.Use Solid-Phase Extraction (SPE) post of Supelco C18 from water sample, to extract toxin.Before sample introduction with analyte through 0.2 μ m membrane filtration.20 μ l extracts are injected analytical column, and with anti-phase C18 performance liquid chromatographic column, the optical diode sequential detector carries out toxin analysis at 238nm wavelength place.By contrasting with standard, converse the plain concentration of little algae by peak area, the plain clearance of little algae reaches 98%.
Claims (6)
1. method that is used for removing the little algae element of tap water comprises:
In the algae-containing water of pH 6-10, add ferrate, stirred 10-60 minute;
Toxin is removed in sedimentation behind the stirring reaction.
2. ask 1 described method according to claim, wherein, the concentration of the ferrate that adds in the algae-containing water is with FeO
4 2-Concentration is counted 10-50mg/L.
3. wherein, stirred 10-60 minute behind the adding ferrate in accordance with the method for claim 1.
4. in accordance with the method for claim 1, wherein, described high body hydrochlorate is potassium ferrate (K
2FeO
4) and/or Na2Fe04 (Na
2FeO
4).
5. in accordance with the method for claim 1, wherein, described algae-containing water is the source water that contains blue-green algae.
6. in accordance with the method for claim 1, wherein, described stirring divides two steps to carry out, and at first stirs 1-3 minute fast under 250-500rpm, reacts 10-60 minute under the middling speed agitation condition of 50-100rpm then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001357840A CN1137860C (en) | 2000-12-20 | 2000-12-20 | Process for removing microalgin from water by ferric oxidizing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001357840A CN1137860C (en) | 2000-12-20 | 2000-12-20 | Process for removing microalgin from water by ferric oxidizing |
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| CN1359860A true CN1359860A (en) | 2002-07-24 |
| CN1137860C CN1137860C (en) | 2004-02-11 |
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| CNB001357840A Expired - Fee Related CN1137860C (en) | 2000-12-20 | 2000-12-20 | Process for removing microalgin from water by ferric oxidizing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319871C (en) * | 2004-10-20 | 2007-06-06 | 哈尔滨工业大学 | Pollution removing medicament for water disposal |
| CN101508505B (en) * | 2009-03-23 | 2011-07-13 | 金坛阿波罗生物制品有限公司 | Method for removing blue algae in water and reducing algae stench |
| CN102701346A (en) * | 2012-05-21 | 2012-10-03 | 中国科学院生态环境研究中心 | Method for pre-oxidizing and reinforcing coagulation of algae cells and controlling release of organic substances in algae cells |
| CN103787482A (en) * | 2014-03-05 | 2014-05-14 | 南京农业大学 | Method for removing endocrine disrupters and phosphorus in water at the same time |
| CN113166792A (en) * | 2018-12-14 | 2021-07-23 | 比亚分离公司 | A method for removing or eliminating endotoxin from an endotoxin-containing source or a potential endotoxin-containing source |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529736B (en) * | 2018-04-24 | 2021-09-14 | 哈尔滨工业大学 | Method for controlling algal bloom generation and synchronously removing algal toxins |
-
2000
- 2000-12-20 CN CNB001357840A patent/CN1137860C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319871C (en) * | 2004-10-20 | 2007-06-06 | 哈尔滨工业大学 | Pollution removing medicament for water disposal |
| CN101508505B (en) * | 2009-03-23 | 2011-07-13 | 金坛阿波罗生物制品有限公司 | Method for removing blue algae in water and reducing algae stench |
| CN102701346A (en) * | 2012-05-21 | 2012-10-03 | 中国科学院生态环境研究中心 | Method for pre-oxidizing and reinforcing coagulation of algae cells and controlling release of organic substances in algae cells |
| CN103787482A (en) * | 2014-03-05 | 2014-05-14 | 南京农业大学 | Method for removing endocrine disrupters and phosphorus in water at the same time |
| CN103787482B (en) * | 2014-03-05 | 2016-01-20 | 南京农业大学 | A kind of method simultaneously removing phosphorus and endocrine disrupter in water |
| CN113166792A (en) * | 2018-12-14 | 2021-07-23 | 比亚分离公司 | A method for removing or eliminating endotoxin from an endotoxin-containing source or a potential endotoxin-containing source |
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| Publication number | Publication date |
|---|---|
| CN1137860C (en) | 2004-02-11 |
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