CN102351284B - Method for killing limnoperna fortunei in raw water pipeline by chloramine - Google Patents
Method for killing limnoperna fortunei in raw water pipeline by chloramine Download PDFInfo
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- CN102351284B CN102351284B CN201110188113.5A CN201110188113A CN102351284B CN 102351284 B CN102351284 B CN 102351284B CN 201110188113 A CN201110188113 A CN 201110188113A CN 102351284 B CN102351284 B CN 102351284B
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Abstract
The invention discloses a method for killing limnoperna fortunei in a raw water pipeline by chloramine, which relates to the field of limnoperna fortunei treatment in the raw water pipeline. The method aims at solving the problems of poor feasibility and complicated operation of the method for killing the limnoperna fortunei in the raw water pipeline in the prior art. The method comprises the following operation steps that: the chloramine is added in the raw water pipeline at the water temperature being 15 to 30 DEG C so that the chloramine concentration in the raw water pipeline is 1 to 3mg/L and is maintained for 3 to 12 days. The method has the advantages that 1, chlorine disinfection by-products are few, the attenuation in water is slow, the dispersibility is good, the biomembrane penetrating capability is high, the activity is low, the durability is good, the control effect on organisms at the tail end of a long-distance water conveying pipeline is better, and the effect in the organism control aspect is better than that of free chlorine; and 2, the invention provides an economic and safe water treatment method, the number of the limnoperna fortunei in raw water and the pipeline can be effectively controlled, and in addition, the operation is safe and convenient. The method is mainly used for treating the limnoperna fortunei in the raw water pipeline.
Description
Technical field
The present invention relates to the process field of fresh water mussel in raw water pipeline.
Background technology
Fresh water mussel is a kind of fresh water mussel, have the shell of two pieces of opening and closings, byssus is flourishing, belongs to being gregariousness property mollusk, fresh water mussel raised growth breeding in south China waters, not only can affect the ecologic structure of local water body, cause the destruction of the ecosystem, and enter in former water Long-distance Pipeline for Water Conveyance, amount reproduction in pipeline, increase the resistance of water conveyance of pipeline, worsen water quality, harm waterworks safety.And fresh water mussel has the ability of closed shell protection in severe environment, and the killing method of short period of time can not be killed completely, when it comes back in good water surrounding, can recover vitality.Therefore, study thoroughly killing of fresh water mussel is significant.
The existing method killing fresh water mussel in pipeline mainly contains physical method and chemical process.Physical method comprises employing anti-adhesion coating, high-temperature water spraying method, sets up pre-treatment facility, isolating oxygen method and artificial mechanism removing method.But its complicated operation, factor restriction is more, poor feasibility.Adopt anti-adhesion coating way to be only applicable to newly-built pipeline, it is large to set up pre-treatment facilities engineering amount.Chemical process mainly adopts the way adding chemical agent, as lime, copper sulfate, sylvite, cupric oxide, ozone and various molluscicides etc., but considers the security of tap water, in the process during a lot of medicament cannot be used for drinking water.
Summary of the invention
The present invention will solve the method complicated operation that prior art kills fresh water mussel in raw water pipeline, the problem of poor feasibility, and provides a kind of method of killing limnoperna fortunei in raw water pipeline by chloramine.
The method of killing limnoperna fortunei in raw water pipeline by chloramine, specifically push step completes: at water temperature 15 ~ 30 DEG C, apply chloramines in raw water pipeline, and chloramine concentrations in raw water pipeline is kept 3 ~ 12 days under 1 ~ 3mg/L.
Advantage of the present invention: one, the present invention adopts fresh water mussel in chloramines process raw water pipeline, the Chlorination Disinfection By-products produced in treating processes is few, in water slow, the good dispersity of decay, penetrate that microbial film ability is comparatively strong, activity is low, persistence good, biological control for Long-distance Pipeline for Water Conveyance end has better effects, and in control is biological, effect is stronger than free chlorine; Two, the invention provides the water treatment method of a kind of economy, safety, and the method effectively can control the quantity of fresh water mussel in former water and pipeline, uses this technology, easy-to-operate, has high feasibility.
Embodiment
Embodiment one: present embodiment provides a kind of method of killing limnoperna fortunei in raw water pipeline by chloramine, and concrete operation step is as follows:
At water temperature 15 ~ 30 DEG C, in raw water pipeline, apply chloramines, chloramine concentrations in raw water pipeline is kept 3 ~ 12 days under 1 ~ 3mg/L.
60% ~ 100% is reached by fresh water mussel mortality ratio in raw water pipeline after present embodiment process.
The sterilizing agent of chloramines Chang Zuowei water, its advantage:, because humic substance effect in chloramines and water is less, because this reducing the carcinogenic substance (as haloform) that humic substance and free chlorine are formed; Two, the chlorine residue time length that the chloramines in pipe network is formed is long, thus can effectively suppress breeding again of residual bacterial; Three, the stink that chlorine causes is avoided.
Present embodiment adopts fresh water mussel in chloramines process raw water pipeline, the Chlorination Disinfection By-products produced in treating processes is few, in water slow, the good dispersity of decay, penetrate that microbial film ability is comparatively strong, activity is low, persistence good, biological control for Long-distance Pipeline for Water Conveyance end has better effects, and in control is biological, effect is stronger than free chlorine.
Present embodiments provide for the water treatment method of a kind of economy, safety, and the method effectively can control the quantity of fresh water mussel in former water and pipeline, uses this technology, easy-to-operate, has high feasibility.
Embodiment two: the difference of present embodiment and embodiment one is: apply chloramines at water temperature 25 DEG C in raw water pipeline, makes chloramine concentrations in raw water pipeline keep 4.5 days under 1mg/L.Other is identical with embodiment one.
80% ~ 90% is reached by fresh water mussel mortality ratio in raw water pipeline after present embodiment process.
Known by present embodiment, when in former water, chloramine concentrations is 1mg/L, although can reach the object of killing fresh water mussel, efficiency is not high.
Embodiment three: present embodiment and embodiment one or two difference are: apply chloramines at water temperature 20 DEG C in raw water pipeline, makes chloramine concentrations in raw water pipeline keep 8 days under 3mg/L.Other is identical with embodiment one or two.
80% ~ 90% is reached by fresh water mussel mortality ratio in raw water pipeline after present embodiment process.
Embodiment four: present embodiment and embodiment one to three difference are: apply chloramines at water temperature 25 DEG C in raw water pipeline, makes chloramine concentrations in raw water pipeline keep 4.5 days under 3mg/L.Other is identical with embodiment one or three.
95% ~ 99% is reached by fresh water mussel mortality ratio in raw water pipeline after present embodiment process.
Present embodiment is carried out at room temperature 25 DEG C, is only changing chloramine concentrations compared with embodiment two, but higher, effective than embodiment two efficiency, and therefore known increase chloramine concentrations can improve the ability of fresh water mussel in process raw water pipeline; Increase temperature of reaction compared with embodiment three, but shorten the reaction times, but fresh water mussel mortality ratio is higher than embodiment three, so raise the ability that water temperature can improve fresh water mussel in process raw water pipeline.
Embodiment five: present embodiment and embodiment one to four difference are: apply chloramines at water temperature 30 DEG C in raw water pipeline, makes chloramine concentrations in raw water pipeline keep 3 days under 3mg/L.Other is identical with embodiment one or four.
By fresh water mussel mortality ratio > 99% in raw water pipeline after present embodiment process.
By known compared with embodiment two or three, under in the former water of guarantee, chloramine concentrations is the constant prerequisite of 3mg/L, improve the temperature of former water, can application time be shortened, both reach the object of raising the efficiency, but economically analyze, artificial rising temperature of reaction can increase processing cost, inadvisable, but the summer hot in south, when natural temperature can reach this temperature, the method is better.
Embodiment six: present embodiment and embodiment one to five difference are: at water temperature 20 DEG C, apply chloramines in raw water pipeline, makes chloramine concentrations in former water be greater than 3mg/L.Other is identical with embodiment one or five.
In present embodiment, fresh water mussel just carries out closed shell self-protection, 3 ~ 5 days closed shell time, and during this period, any medicament is all inoperative.Treat fresh water mussel closed shell by idiotrophic material consumption totally, just dead successively.Therefore in the former water of known increase, chloramine concentrations not only reduces the efficiency killed, and adds cost.
Claims (3)
1. the method for killing limnoperna fortunei in raw water pipeline by chloramine, it is characterized in that the method for killing limnoperna fortunei in raw water pipeline by chloramine is that push step completes: at water temperature 15 ~ 30 DEG C, in raw water pipeline, apply chloramines, chloramine concentrations in raw water pipeline is kept 3 ~ 12 days under 1 ~ 3mg/L.
2. the method for killing limnoperna fortunei in raw water pipeline by chloramine according to claim 1, it is characterized in that the method for killing limnoperna fortunei in raw water pipeline by chloramine is that push step completes: at water temperature 25 DEG C, in raw water pipeline, apply chloramines, chloramine concentrations in raw water pipeline is kept 4.5 days under 3mg/L.
3. the method for killing limnoperna fortunei in raw water pipeline by chloramine according to claim 1 and 2, it is characterized in that the method for killing limnoperna fortunei in raw water pipeline by chloramine is that push step completes: in the summer that south is hot, in raw water pipeline, apply chloramines at water temperature 30 DEG C, chloramine concentrations in raw water pipeline is kept 3 days under 3mg/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110188113.5A CN102351284B (en) | 2011-07-06 | 2011-07-06 | Method for killing limnoperna fortunei in raw water pipeline by chloramine |
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| CN201110188113.5A CN102351284B (en) | 2011-07-06 | 2011-07-06 | Method for killing limnoperna fortunei in raw water pipeline by chloramine |
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| CN102351284A CN102351284A (en) | 2012-02-15 |
| CN102351284B true CN102351284B (en) | 2015-02-25 |
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| CN104222050B (en) * | 2014-09-12 | 2016-08-24 | 南通大学 | A kind of method preventing and treating raw water pipeline fresh water mussel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1372797A (en) * | 2001-03-04 | 2002-10-09 | 中国科学院海洋研究所 | Enzyme inhibitor and its application in preventing seawater pipeline from being blocked by mytilus edulis |
| JP2005002593A (en) * | 2003-06-10 | 2005-01-06 | Kansai Electric Power Co Inc:The | Adhesion preventive method for kawahibari-gai(a kind of mussel) |
| CN1583591A (en) * | 2004-05-28 | 2005-02-23 | 清华大学 | Sequential water treating and sterilizing method by chloramine after short free chlorine |
-
2011
- 2011-07-06 CN CN201110188113.5A patent/CN102351284B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1372797A (en) * | 2001-03-04 | 2002-10-09 | 中国科学院海洋研究所 | Enzyme inhibitor and its application in preventing seawater pipeline from being blocked by mytilus edulis |
| JP2005002593A (en) * | 2003-06-10 | 2005-01-06 | Kansai Electric Power Co Inc:The | Adhesion preventive method for kawahibari-gai(a kind of mussel) |
| CN1583591A (en) * | 2004-05-28 | 2005-02-23 | 清华大学 | Sequential water treating and sterilizing method by chloramine after short free chlorine |
Non-Patent Citations (2)
| Title |
|---|
| 优质饮用水的消毒方法;王宝贞等;《哈尔滨工业大学学报》;20020830;第34卷(第4期);第479页1.1小节第2段 * |
| 输水管道中淡水壳菜的防治研究;徐梦珍等;《给水排水》;20090510;第35卷(第5期);第207页2.3小节9-10行 * |
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