CN104222050A - Method for preventing and controlling limnoperna lacustris in raw water pipeline - Google Patents
Method for preventing and controlling limnoperna lacustris in raw water pipeline Download PDFInfo
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- CN104222050A CN104222050A CN201410464330.6A CN201410464330A CN104222050A CN 104222050 A CN104222050 A CN 104222050A CN 201410464330 A CN201410464330 A CN 201410464330A CN 104222050 A CN104222050 A CN 104222050A
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Abstract
The invention discloses a method for preventing and controlling limnoperna lacustris in a raw water pipeline. The method is characterized by comprising the following steps: determining the dosing amount of chlorine gas; adding chlorine to remove the limnoperna lacustris; flushing the pipeline. According to the method for preventing and controlling the limnoperna lacustris in the raw water pipeline, chlorine is added continuously, the chlorine concentration is controlled to be 1-2mg/l, and the residual chlorine is controlled within 0.5mg/l, so that reliable, safe, and durable prevention and control effects are achieved on the premise of not generating a large quantity of disinfection by-products on raw water; in general, after the prevention and control method is applied for about one week, the limnoperna lacustris dies on a large scale, double hulls are opened fully, and a remarkable death sign is shown; prevention and control raw materials are cheap, the prevention and control costs are low, the prevention and control method is easy to operate, and secondary pollution is avoided.
Description
Technical field
The present invention relates to a kind of method of preventing and treating raw water pipeline fresh water mussel, belong to chemical method prevention and control field.
Background technology
Fresh water mussel can secrete byssus, and is firmly attached in hard object by byssus, and fresh water mussel is after larval metamorphosis is attached to pipeline, generally no longer move, with organic particle and lower animal in the cheek passive filter drinking water, abundant food source and suitable growing environment, impel raised growth to breed.Water temperature also can affect the metabolism of fresh water mussel, but it has larger adaptive faculty to variations in temperature, and has stronger resistance to drying capacity.When fresh water mussel is developed to larva, body is long very little, and generally only have hundreds of micron, adult shell reaches tens of milliseconds, during the young, to light significant reaction, the movement of larva under strong illumination, can be caused, even cause the heap sum of larva dead, general adult does not significantly react light intensity.According to the growth rate of fresh water mussel, only need 6 monthly average shell length to reach 9mm, just can reach sexual maturity, inspiring the threshold water temperature that fresh water mussel starts breeding is 16 ~ 17 DEG C.
Be in the raw water pipeline at water source, easily grow fresh water shell biology with surface water, these shells rely on byssus to be attached on inner-walls of duct, and amount reproduction forms the Shells piled up layer by layer, reduce the area of passage of pipeline, the carrying capacity of pipeline is caused to decline, simultaneously, dissolved oxygen in fresh water shell respiration consumption water, ammonia nitrogen is drained and nutritive salt can affect water quality in metabolic process, because raw water pipeline is totally-enclosed press water environment, hydrophobic distance is longer, if adopt machinery or the artificial method removed to remove shell biology in pipe there is certain difficulty, therefore, how to kill and remove ducted fresh water mussel and control its Growth and reproduction, it is an extremely urgent problem.
In former water, most of shellfish biology is in littlely opens shelly state, just can rapid closing bivalve when being only subject to external interference, until the water surface stable after crack bivalve gradually again.At artificial starvation, be placed in pure water and rest, do not have the required nutrients such as food, shell biology reaches 100% death about needs more than 1 week time.After adding a small amount of chlorine, shellfish biology has the ability of closed shell protection, is substantially in closed shell state.
Not yet there is bibliographical information for the chemical control of shellfish biology at present, for killing of shell biology in pipeline, based on chemical method, most widely used general especially with chlorine.Therefore, consider that key medicine system controls shellfish biological, first must study the killing effect to freshwater shellfish such as clorox, potassium permanganate, copper sulphate, hydrogen peroxide, kill for yielding ability and foundation and prevention and controls are provided.
Summary of the invention
The object of the invention is to for deficiency of the prior art, a kind of method of preventing and treating raw water pipeline fresh water mussel is provided, for the research of control raw water pipeline fresh water mussel opens the beginning.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of method of preventing and treating raw water pipeline fresh water mussel, and its innovative point is: comprise dosage step, chlorination removal fresh water mussel step and the pipe flushing step of determining chlorine;
Describedly determine that chlorine addition amount step is for opening raw water tubes valve along the line, control flow of inlet water is 990 ~ 1100m
3/ h, then adds chlorine in raw water tubes, regulates chlorinating machine flow to be 50 ~ 55kg/d, ensures that theoretical chlorine dosage is 1 ~ 2mg/L, closing duct valve, stops chlorination; After 24 hours, sampling detects contents of residual chlorine, then the consumption of former water chlorine is the dosage of theoretical chlorine and the difference of contents of residual chlorine;
Described chlorination removes fresh water mussel step for opening the water inlet of raw water tubes pipeline valve, and flow of inlet water controls at 490 ~ 510 m
3/ h, regulate chlorinating machine flow to be 80 ~ 85kg/d, arranging chlorine input amount is 6 ~ 7mg/l, and after adding 2 hours, sampling detects, and ensure that residual chlorine concentration is at more than 1.0mg/l, closing duct valve, stops chlorination; Again sample detection after adding 4 hours, ensure that residual chlorine concentration is at more than 1.0mg/l, if residual chlorine concentration is at below 1.0mg/l, supplements and add chlorine and make residual chlorine concentration at more than 1.0mg/l; After maintenance chlorine residue steady concentration, airtightly kill 7 days;
Described pipe flushing step be airtight kill 7 days after, open plant area's draining valve draining, control drainage discharge be 330 ~ 370 m
3/ h, gets discharge water sample detection simultaneously, and interval detects a chlorinity in 10 minutes until detecting chlorine residue in water sample is zero rear closedown plant area draining valve; Open off-site draining valve and carry out draining, control drain discharge and be followed successively by 1000m
3/ h, 2000 m
3/ h, 3000 m
3/ h and 5000 m
3/ h, until discharging water is limpid rear stopping draining.
Further, describedly determine that controlling flow of inlet water in chlorine addition amount step is 1000m
3/ h.
Further, in described chlorination removal fresh water mussel step, flow of inlet water controls at 500 m
3/ h
.
Further, describedly determine that in chlorine addition amount step, chlorinating machine flow-control is 50kg/d.
Further, chlorinating machine flow-control in fresh water mussel step removed by described chlorination is 85kg/d.
Further, in described pipe flushing step, on-site drainage discharge is 350 m
3/ h.
Beneficial effect of the present invention: the method for (1) this control raw water pipeline fresh water mussel of the present invention, continue chlorination, control chlorine gas concentration at 1 ~ 2mg/l, chlorine residue controls within 0.5mg/l, and under the prerequisite of adverse consequences former water not being produced to a large amount of disinfection byproduct (DBP), control efficiency is reliable, safety and control efficiency is lasting, general, use this prevention and controls about one week, fresh water mussel can large batch of death, and bivalve is produced out completely and demonstrated obvious dead sign; (2) to prevent and treat raw material cheap in the present invention, and cost accounting is low, and prevention and controls is simple to operation, can not cause secondary pollution.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is elaborated.
Embodiment 1
Yielding ability fresh water mussel controlling experiment:
Carry out chlorine addition test to DN1000 raw water tubes, test objective is the amount of chlorine that the former water of test needs to consume, thus determines the dosage of chlorine.
Process of the test is as follows:
Open raw water tubes valve along the line (3), flow of inlet water is 1000m
3/ h, then to raw water tubes chlorination, chlorinating machine flow is 50kg/d, and calculating chlorine dosage is 2mg/l.This pipeline total length 1.7km, flow 1000m
3during/h, theoretical residence time is 1.33 hours.After 1 hour, sampling detects, and detect that residual chlorine concentration is 1.5mg/l, detecting chlorine residue after continuing to add 20 minutes is 2.0mg/l, and namely close DN1000 raw water tubes two ends valve, and stop chlorination, now pipeline is air-tight state.
Again sample detection after 24 hours, chlorine residue is only 0.6mg/l, judges that former water chlorine consumes and is approximately 1.4mg/l.In experimental stage pipeline, chlorine residue detection record table is as shown in table 1:
Table 1
| Date | First day | First day | Second day |
| Time | Start | After 1 hour | After 24 hours |
| Chlorine content (mg/l) | 1.5 | 2.0 | 0.6 |
Formally carry out chlorination to raw water tubes after 24 hours and remove fresh water mussel, program is as follows:
Raw water tubes starts water inlet, and flow of inlet water controls at 500m
3/ h, chlorinating machine flow set is 85kg/d, and chlorine dosage is 7mg/l, the chlorine that removing virus killing consumes, and ensures more than chlorine residue 1.0mg/l, and after adding 2 hours, sampling detects, and chlorine residue reaches more than 1.0mg/l.Close raw water tubes two ends valve, and stop chlorination.Again sample detection after adding 4 hours, chlorine residue remains on more than 1.0mg/l, and later every day at the upper and lower noon respectively samples detection once, and chlorine residue remains unchanged.
Get river crossing air bleeding valve place water sample after 6th day and add survey, chlorine residue reaches 5.0mg/l.Under the prerequisite keeping chlorine residue more than steady concentration 1.0mg/l, airtightly from from experiment kill 7 days.
Rinse raw water tubes pipeline after killing end, program is as follows:
Kill end and open draining valve draining after one day, the water containing chlorine residue enters sewage pool in factory, then enters the Changjiang river, and drainage discharge controls at 350m
3/ h, get the discharge water yield to detect, chlorine residue is up to 5.0mg/l, detects a chlorine residue every 10 minutes later simultaneously, chlorine residue is all at more than 1.0mg/l, detect water sample after three hours, chlorine residue is only 0.3mg/l, shows that in raw water tubes pipeline, chlorinated water discharges totally substantially, until detecting water sample chlorine residue is zero, can close DN300 draining valve, open the draining of off-site draining valve, drain discharge controls at 1000m
3/ h, after 30 ~ 40 minutes, drain discharge is adjusted to 2000 m
3/ h, after 30 ~ 50 minutes, drainage discharge is increased to 3000 m
3/ h, after 20 ~ 30 minutes, drainage discharge is increased to 5000 m
3/ h, until the water of discharging is limpid, can stop draining.
Because the present embodiment drain discharge is comparatively large, the fresh water mussel killed may flow in the river course on side with current, after draining terminates, sees the fresh water mussel ghost of being killed completely by chlorine water on bank.
Embodiment 2
Fresh water mussel sterilize experiment in laboratory:
1, reagent: clorox
2, test method:
(1) the adult fresh water mussel of long 10 ~ 20mm is selected, prepare 1 ~ No. 4 former water beaker of 1L, place 30 adult fresh water mussels in 1 ~ No. 2 beaker respectively, in 3 ~ No. 4 beakers, be paved with adult fresh water mussel respectively, parcel lucifuge, dropping into effective chlorine density is respectively 1.0mg/l;
(2) the adult fresh water mussel of long 10 ~ 20mm is selected, prepare 5 ~ No. 8 former water beakers of 1L, place 30 adult fresh water mussels in 5 ~ No. 6 beakers respectively, in 7 ~ No. 8 beakers, be paved with adult fresh water mussel respectively, parcel lucifuge, dropping into effective chlorine density is respectively 2.0mg/l;
(3) the adult fresh water mussel of long 10 ~ 20mm is selected, prepare 9 ~ No. 12 former water beakers of 1L, place 40 adult fresh water mussels in 9 ~ No. 10 beakers respectively, in 11 ~ No. 12 beakers, be paved with adult fresh water mussel respectively, parcel lucifuge, dropping into effective chlorine density is respectively 5.0mg/l;
From first day, in above-mentioned former water beaker, add clorox and the fresh water mussel of variable concentrations, after about one week, observe fresh water mussel death condition respectively.
The result of the test adding variable concentrations clorox fresh water mussel dead sum every day in the present embodiment is as shown in table 2 below:
Table 2
As can be seen from the above table, within the 7th day, rise, fresh water mussel starts large batch of death.
Claims (6)
1. prevent and treat a method for raw water pipeline fresh water mussel, it is characterized in that: comprise dosage step, chlorination removal fresh water mussel step and the pipe flushing step of determining chlorine;
Describedly determine that chlorine addition amount step is for opening raw water tubes valve along the line, control flow of inlet water is 990 ~ 1100m
3/ h, then adds chlorine in raw water tubes, regulates chlorinating machine flow to be 50 ~ 55kg/d, ensures that theoretical chlorine dosage is 1 ~ 2mg/L, closing duct valve, stops chlorination; After 24 hours, sampling detects contents of residual chlorine, then the consumption of former water chlorine is the dosage of theoretical chlorine and the difference of contents of residual chlorine;
Described chlorination removes fresh water mussel step for opening the water inlet of raw water tubes pipeline valve, and flow of inlet water controls at 490 ~ 510 m
3/ h, regulate chlorinating machine flow to be 80 ~ 85kg/d, arranging chlorine input amount is 6 ~ 7mg/l, and after adding 2 hours, sampling detects, and ensure that residual chlorine concentration is at more than 1.0mg/l, closing duct valve, stops chlorination; Again sample detection after adding 4 hours, ensure that residual chlorine concentration is at more than 1.0mg/l, if residual chlorine concentration is at below 1.0mg/l, supplements and add chlorine and make residual chlorine concentration at more than 1.0mg/l; After maintenance chlorine residue steady concentration, airtightly kill 7 days;
Described pipe flushing step be airtight kill 7 days after, open plant area's draining valve draining, control drainage discharge be 330 ~ 370 m
3/ h, gets discharge water sample detection simultaneously, and a chlorinity is detected in 10 minutes in interval, until detecting chlorine residue in water sample is zero rear closedown plant area draining valve; Open off-site draining valve and carry out draining, control drain discharge and be followed successively by 1000m
3/ h, 2000 m
3/ h, 3000 m
3/ h and 5000 m
3/ h, until discharging water is limpid rear stopping draining.
2. the method for control raw water pipeline fresh water mussel according to claim 1, is characterized in that: describedly determine that controlling flow of inlet water in chlorine addition amount step is 1000m
3/ h.
3. the method for control raw water pipeline fresh water mussel according to claim 1, is characterized in that: described chlorination is removed flow of inlet water in fresh water mussel step and controlled at 500 m
3/ h
.
4. the method for control raw water pipeline fresh water mussel according to claim 1, is characterized in that: describedly determine that in chlorine addition amount step, chlorinating machine flow-control is 50kg/d.
5. the method for control raw water pipeline fresh water mussel according to claim 1, is characterized in that: chlorinating machine flow-control in fresh water mussel step removed by described chlorination is 85kg/d.
6. the method for control raw water pipeline fresh water mussel according to claim 1, is characterized in that: in described pipe flushing step, on-site drainage discharge is 350 m
3/ h.
Priority Applications (1)
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|---|---|---|---|
| CN201410464330.6A CN104222050B (en) | 2014-09-12 | 2014-09-12 | A kind of method preventing and treating raw water pipeline fresh water mussel |
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|---|---|---|---|
| CN201410464330.6A CN104222050B (en) | 2014-09-12 | 2014-09-12 | A kind of method preventing and treating raw water pipeline fresh water mussel |
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| CN104222050A true CN104222050A (en) | 2014-12-24 |
| CN104222050B CN104222050B (en) | 2016-08-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104855316A (en) * | 2015-05-21 | 2015-08-26 | 国家电网公司 | Method for simulating limnoperna lacustris habitat and simulation device |
| CN105040628A (en) * | 2015-05-21 | 2015-11-11 | 国家电网公司 | Method for preventing and treating reservoir fresh water mussel disaster of pumped storage power station |
| CN111926090A (en) * | 2020-09-09 | 2020-11-13 | 中国科学院生态环境研究中心 | Specific primer, probe and kit for detecting mactra veneriformis in freshwater environment |
| CN113728993A (en) * | 2021-09-02 | 2021-12-03 | 华能澜沧江水电股份有限公司 | Fresh water shell vegetable optical drive control method suitable for hydropower station |
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| JP2003265085A (en) * | 2002-01-10 | 2003-09-24 | Sumitomo Chem Co Ltd | Insect pest-controlling device |
| CN102205999A (en) * | 2011-04-28 | 2011-10-05 | 哈尔滨工业大学 | Method for killing fresh water moule in raw water transportation pipeline by utilizing potassium permanganate |
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| CN103342411A (en) * | 2013-07-17 | 2013-10-09 | 北京工业大学 | Method for oxidative regulation and control of water quality in original water conveying pipeline through combination of chlorine dioxide and chlorine |
| CN103523893A (en) * | 2013-10-24 | 2014-01-22 | 哈尔滨工业大学 | Method for killing limnoperna fortune in long-distance raw water delivery pipeline by combined effect of potassium permanganate and sodium hypochlorite |
-
2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003265085A (en) * | 2002-01-10 | 2003-09-24 | Sumitomo Chem Co Ltd | Insect pest-controlling device |
| CN102205999A (en) * | 2011-04-28 | 2011-10-05 | 哈尔滨工业大学 | Method for killing fresh water moule in raw water transportation pipeline by utilizing potassium permanganate |
| CN102351284A (en) * | 2011-07-06 | 2012-02-15 | 哈尔滨工业大学 | Method for killing limnoperna fortunei in raw water pipeline by chloramine |
| CN102390876A (en) * | 2011-07-06 | 2012-03-28 | 哈尔滨工业大学 | Method for killing Limnoperna fortunei in raw water pipeline with chlorine dioxide |
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| CN103523893A (en) * | 2013-10-24 | 2014-01-22 | 哈尔滨工业大学 | Method for killing limnoperna fortune in long-distance raw water delivery pipeline by combined effect of potassium permanganate and sodium hypochlorite |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104855316A (en) * | 2015-05-21 | 2015-08-26 | 国家电网公司 | Method for simulating limnoperna lacustris habitat and simulation device |
| CN105040628A (en) * | 2015-05-21 | 2015-11-11 | 国家电网公司 | Method for preventing and treating reservoir fresh water mussel disaster of pumped storage power station |
| CN105040628B (en) * | 2015-05-21 | 2017-02-22 | 国家电网公司 | Method for preventing and treating reservoir fresh water mussel disaster of pumped storage power station |
| CN111926090A (en) * | 2020-09-09 | 2020-11-13 | 中国科学院生态环境研究中心 | Specific primer, probe and kit for detecting mactra veneriformis in freshwater environment |
| CN113728993A (en) * | 2021-09-02 | 2021-12-03 | 华能澜沧江水电股份有限公司 | Fresh water shell vegetable optical drive control method suitable for hydropower station |
| CN113728993B (en) * | 2021-09-02 | 2022-11-29 | 华能澜沧江水电股份有限公司 | Fresh water shell vegetable optical drive control method suitable for hydropower station |
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|---|---|
| CN104222050B (en) | 2016-08-24 |
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