CN104925920A - Method for phyisochemical enhanced algae removal - Google Patents
Method for phyisochemical enhanced algae removal Download PDFInfo
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- CN104925920A CN104925920A CN201510373125.3A CN201510373125A CN104925920A CN 104925920 A CN104925920 A CN 104925920A CN 201510373125 A CN201510373125 A CN 201510373125A CN 104925920 A CN104925920 A CN 104925920A
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Abstract
The invention belongs to the technical field of drinking water treatment and discloses a method for phyisochemical enhanced algae removal. The method includes: aiming at eutrophic water bodies of surface water like lakes and reservoirs, adding copper salt and chlorine at the same time before water plant treatment. Chlorine free radical and chlorine can damage completeness of algae cell walls, and copper ions are facilitated to act on cytoplasm, so that algae cell activity and algae cell breeding amount are inhibited effectively. The method is mainly applied to water source pretreatment of the eutrophic water bodies and can be applied to landscape reserve water treatment targeting at landscape water body recycling.
Description
Technical field:
The invention belongs to technical field of drinking water treatment, particularly the method for algae removal is strengthened in a kind of mantoquita and chlorine coupling.
Background technology:
Due to the discharge of the nutrition source such as nitrogen, phosphorus, many water sources such as river, lakes and reserviors possessing potable water source district function are caused to present eutrophication trend in various degree, and alga eruption may be caused under the condition that environmental factors is suitable, become the important hidden danger affecting water factory's treatment process process and drinking water quality safety.
Algae-containing water or the disadvantageous effect main manifestations of algae blooms water to drinking water treatment technique, drinking water quality safety are: 1) frustule is electronegativity, not readily pass through coagulation de-steady, especially for survival frustule, be difficult to especially be removed by coagulation, precipitation unit, frustule may be caused to breed in the structures such as reaction tank, settling tank, filter tank, and the filtering membrane that may penetrate filter tank enter water distributing network; 2) penetrate the filtering membrane in filter tank frustule may in the water distributing pipe of water distributing network, register one's residence pipe, secondary water-supply facility etc. further flourish, this will consume the chlorine residue of pipe network end, and degradation disadvantageous effect under causing microbial reproduction and sense organ; 3) pre-oxidation process is by frustule deactivation, and this is favourable for coagulation process, but under high chlorine throwing amount, cell wall structure also may destroy by preoxidation, and causes intracellular organic matter to discharge, and may produce larger water quality grade.Therefore, for algae-containing water or algae blooms water, how to strengthen algae removal and improve coagulation efficiency, will one of technical barrier that drinking water plant faces be become.
Therefore, develop efficient, with low cost, easy to use and effectively can suppress the algae removal method of algae cell activity in source water and reproductive number, improving flocculation except algae efficiency, is the difficulties needing solution in the application of current Research And Engineering badly.Inventor, for this problem, proposes to suppress the algae removal method of algae cell activity in water body and reproductive number before source water enters water factory's unit, also the i.e. a kind of method of materialization strengthening algae removal discussed of the present invention.
Summary of the invention:
The object of the invention is for the algae blooms water as drinking water source, provide a kind of performance efficiency, economically feasible, be easy to a kind of method of materialization strengthening algae removal of in engineering large-scale application; The method can reach the target of efficient algae removal when adding drug dose and being all lower.
The method and technology principle of a kind of materialization strengthening algae removal of the present invention is: when coexisting with cupric ion, chlorine can slowly generate the chlorine radical with Strong oxdiative ability under the katalysis of cupric ion, chlorine radical and residual chlorine can destroy frustule integrity, change frustule wall permeability, the cupric ion be beneficial to outside frustule wall enters in frustule and destroys organoid, further deactivation frustule.Method of the present invention can effectively suppress waterworks to enter algae cell activity and frustule quantity in factory's water.
The method that a kind of materialization strengthening of the present invention removes algae comprises the following steps: mixed with algae-containing water by the aqueous solution of the aqueous solution of mantoquita and chlorine, wherein the ratio of the mole number of cupric ion and chloramines is 0.04 ~ 0.5, and the reaction times is greater than 5min simultaneously; Algae cell activity after mantoquita and chlorine combination treatment and reproductive number are effectively suppressed.
The described aqueous solution containing reactive chlorine is that one or more of liquid chlorine, clorox and Losantin are soluble in water to be formed by being selected from.
Described ammonium salt is selected from one or more in ammonium chloride, ammonium sulfate and ammonium nitrate.
Described mantoquita is selected from one or more in cupric chloride, copper sulfate and cupric nitrate.
Technical superiority of the present invention, the technique effect of following expection can be obtained:
(1) the present invention is directed to the surface water such as lake, reservoir eutrophication water, propose a kind of materialization simultaneously adding mantoquita and chlorine and strengthen algae removal method, chlorine radical and chlorine can destroy the integrity of frustule wall, be beneficial to cupric ion and act on tenuigenin, and then effectively suppress algae cell activity and frustule reproductive number.The present invention is mainly used in the water source pre-treatment of eutrophication water, the view preparation water treatment that also to can be applicable to landscape water body reuse be target.
(2) when applying mantoquita of the present invention and chlorine coupling and suppressing algae cell activity and frustule to be bred, can add at getting water from water head site mouth or enter in factory's waterpipe in waterworks and add.
(3) apply the method that mantoquita of the present invention and chlorine coupling suppress algae cell activity and frustule to be bred, be applicable to algae blooms water pre-treatment during algal bloom, can 80 ~ 99.9% be reached to the growth inhibition ratio of microcystic aeruginosa, diatom and Huang Sizao etc.
(4) mantoquita of the present invention and chlorine coupling suppress the method that algae cell activity and frustule are bred, and chemical reagent used is Water purification medicament conventional in water treatment or water-purifying material, and method is simple, with low cost, uses easy and simple to handle.The mantoquita that the present invention relates to and chlorine method for combined use have excellent algal control performance, only need in algae-containing water and add the aqueous solution of chlorine and the aqueous solution etc. of mantoquita, and operating process is simple, are easy to realize.
(5) method that mantoquita of the present invention and chlorine coupling suppress algae cell activity and frustule to be bred only needs the aqueous solution of the aqueous solution of mantoquita and chlorine to add in algae-containing water simultaneously, and fully mix afterwards, react, engineering construction operating process is simple.
Embodiment:
Embodiment 1
Certain waterworks waterhead area generation eutrophication pollution, frustule concentration reaches 1.0 × 10
8individual/L, raw water turbidity is 15NTU, and the flocculation agent that water factory adopts is Tai-Ace S 150.When eutrophication pollution does not occur at water source, the throwing amount of flocculation agent is that 20mg/L can reach good removal effect, and the filtration cycle in filter tank is 24 hours.But after above-mentioned eutrophication pollution occurs at water source, the throwing amount of flocculation agent is increased to 30mg/L, treatment effect is still undesirable, after showing as heavy rear water, filter, water turbidity raises, and the clearance of the frustule of heavy rear water is only 80%, and the filtration cycle in filter tank foreshortens to 12 hours.
The source water of method of the present invention to above-mentioned generation eutrophication pollution is adopted to carry out strengthening algae removal:
1) clorox is mixed with water, obtain the aqueous solution of clorox; Copper sulfate is mixed with water, dissolves under fully stirring, obtain the aqueous solution of copper sulfate; Liquid aluminium sulfate is mixed with water, obtains the aqueous solution of Tai-Ace S 150;
2) aqueous solution of the aqueous solution of clorox and copper sulfate is joined getting water from water head site mouth simultaneously, waterhead area is 4 hours to waterworks hydraulic detention time.Wherein the ratio of chlorine and frustule is 0.6mg chlorine: 10
8individual frustule, cupric ion is 0.1 with the amount of substance ratio of chlorine;
3) after the algae-containing water processed enters water factory's unit, by coagulation basin coagulating sedimentation, the clearance of the frustule after heavy in water significantly improves to 99%, and the filtration cycle in filter tank extends to 24 hours.Filtered water reaches drinking water sanitary standard.
Embodiment 2
Certain water factory's waterhead area blue-green alga bloom outburst, frustule concentration reaches 1.0 × 10
9individual/L, raw water turbidity is 40NTU, and the flocculation agent that water factory adopts is Tai-Ace S 150.Before algal bloom, flocculation agent throwing amount is that 20mg/L (in aluminium) can reach good removal effect, and the filtration cycle in filter tank is 24 hours.But during water source generation wawter bloom, flocculation agent throwing amount is increased to 40mg/L, and treatment effect is still undesirable, after showing as heavy rear water, filter, water turbidity raises, and the frustule clearance of heavy rear water is only 70%, filter cycle time to 10 hour.
The water source of method of the present invention to above-mentioned generation wawter bloom is adopted to carry out strengthening algae removal:
1) Losantin is mixed with water, obtain the aqueous solution of Losantin; Copper sulfate is mixed with water, dissolves under fully stirring, obtain the aqueous solution of copper sulfate; Liquid aluminium sulfate is mixed with water, obtains the aqueous solution of Tai-Ace S 150;
2) add at getting water from water head site mouth by the aqueous solution of Losantin and cupric nitrate, waterhead area is 10 hours to waterworks hydraulic detention time simultaneously.Wherein the ratio of chlorine and frustule is 2.5mg chlorine: 10
9individual frustule, cupric ion is 0.2 with the amount of substance ratio of hypochlorite;
3) after the algae-containing water processed enters water factory's unit, by the Tai-Ace S 150 coagulating sedimentation of coagulation basin, the clearance of the frustule after heavy in water significantly improves to 98.9%, and the filtration cycle in filter tank extends to 24 hours.Filtered water reaches drinking water sanitary standard.
Embodiment 3
Certain water factory's waterhead area generation eutrophication pollution, frustule concentration reaches 5.0 × 10
9individual/L, raw water turbidity is 200NTU, and the flocculation agent that water factory adopts is polymerize aluminum chloride.When there is not eutrophication pollution, flocculation agent throwing amount is that 25mg/L (in aluminium) can reach good removal effect, and filtration cycle is 24 hours.But after there is eutrophication pollution, flocculation agent throwing amount is increased to 50mg/L, and treatment effect is still undesirable, after showing as heavy rear water, filter, water turbidity raises, and heavy rear algae cell clearance is only 40%, filter cycle time to 6 hour.
The water source of method of the present invention to above-mentioned generation eutrophication pollution is adopted to carry out strengthening algae removal:
1) clorox is mixed with water, obtain the aqueous solution of clorox; Cupric nitrate is mixed with water, dissolves under fully stirring, obtain the aqueous solution of cupric nitrate; Polymerize aluminum chloride is mixed with water, dissolves under fully stirring, obtain the aqueous solution of polymerize aluminum chloride;
2) add at getting water from water head site mouth by the aqueous solution of the aqueous solution of clorox and cupric nitrate, waterhead area is 8 hours to waterworks hydraulic detention time simultaneously.Wherein the ratio of chlorine and frustule is 3.0mg chlorine: 5.0 × 10
9individual frustule, cupric ion is 0.5 with the amount of substance ratio of hypochlorite;
3) after the algae-containing water processed enters water factory's unit, by polymerize aluminum chloride coagulating sedimentation, the clearance of the frustule after heavy in water significantly improves to 97.5%, and the filtration cycle in filter tank extends to 18 hours.Filtered water reaches drinking water sanitary standard.
Claims (3)
1. a method for materialization strengthening algae removal, it is characterized in that relating to a kind of method that algae removal is strengthened in mantoquita and chlorine coupling, described method comprises:
The aqueous solution of the aqueous solution of mantoquita and chlorine is added to tap water simultaneously to be entered in factory's waterpipe, react with the abundant hybrid concurrency of algae-containing water is raw, treatment time is greater than 5min, wherein cupric ion and chlorine react and can generate the extremely strong chlorine radical of oxidation capacity, chlorine radical and chlorine residue can destroy frustule integrity, change frustule wall permeability, the cupric ion be beneficial to outside frustule wall enters in frustule and destroys organoid, suppress the activity of frustule and the breeding of frustule, wherein cupric ion is 0.04 ~ 0.5 with the amount of substance ratio of chlorine.
2. method according to claim 1, is characterized in that: the described aqueous solution containing reactive chlorine is that one or more of liquid chlorine, clorox and Losantin are soluble in water to be formed by being selected from.
3. method according to claim 1, is characterized in that: described mantoquita is selected from one or more in cupric chloride, copper sulfate and cupric nitrate.
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| CN201510373125.3A CN104925920A (en) | 2015-06-30 | 2015-06-30 | Method for phyisochemical enhanced algae removal |
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| CN201510373125.3A CN104925920A (en) | 2015-06-30 | 2015-06-30 | Method for phyisochemical enhanced algae removal |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB340218A (en) * | 1927-11-19 | 1930-12-22 | Georg Ornstein | An improved process and apparatus for the destruction of algae and fungi in water or sewage |
| US6217780B1 (en) * | 1998-01-23 | 2001-04-17 | Zodiac Pool Care, Inc. | Biocidal compositions for treating water |
| CN1927730A (en) * | 2006-09-29 | 2007-03-14 | 哈尔滨工业大学 | Method of controlling alga in reservoir by chemical agent |
| CN101475229A (en) * | 2009-01-23 | 2009-07-08 | 北京工业大学 | Chemical algae removing method |
| CN101601409A (en) * | 2009-05-26 | 2009-12-16 | 兰州华星高科技开发有限公司 | Sterilization and alga-killing remover for circulating water |
| CN102515291A (en) * | 2011-12-09 | 2012-06-27 | 华侨大学 | Chemical algicide for ground surface eutrophic water algae, its preparation method and its application method |
| CN102976473A (en) * | 2012-12-11 | 2013-03-20 | 上海城市水资源开发利用国家工程中心有限公司 | Method for controlling growth of microcystis aeruginosa through combination of copper salt and chloramine |
| CN103466740A (en) * | 2013-08-23 | 2013-12-25 | 同济大学 | Composite algae removal method |
-
2015
- 2015-06-30 CN CN201510373125.3A patent/CN104925920A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB340218A (en) * | 1927-11-19 | 1930-12-22 | Georg Ornstein | An improved process and apparatus for the destruction of algae and fungi in water or sewage |
| US6217780B1 (en) * | 1998-01-23 | 2001-04-17 | Zodiac Pool Care, Inc. | Biocidal compositions for treating water |
| CN1927730A (en) * | 2006-09-29 | 2007-03-14 | 哈尔滨工业大学 | Method of controlling alga in reservoir by chemical agent |
| CN101475229A (en) * | 2009-01-23 | 2009-07-08 | 北京工业大学 | Chemical algae removing method |
| CN101601409A (en) * | 2009-05-26 | 2009-12-16 | 兰州华星高科技开发有限公司 | Sterilization and alga-killing remover for circulating water |
| CN102515291A (en) * | 2011-12-09 | 2012-06-27 | 华侨大学 | Chemical algicide for ground surface eutrophic water algae, its preparation method and its application method |
| CN102976473A (en) * | 2012-12-11 | 2013-03-20 | 上海城市水资源开发利用国家工程中心有限公司 | Method for controlling growth of microcystis aeruginosa through combination of copper salt and chloramine |
| CN103466740A (en) * | 2013-08-23 | 2013-12-25 | 同济大学 | Composite algae removal method |
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Application publication date: 20150923 |
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