CN103523899A - Method for removing limnoperna lacustris from long-distance raw water conveying pipeline by using combined effect of sodium hypochlorite and water flushing - Google Patents
Method for removing limnoperna lacustris from long-distance raw water conveying pipeline by using combined effect of sodium hypochlorite and water flushing Download PDFInfo
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- CN103523899A CN103523899A CN201310504694.8A CN201310504694A CN103523899A CN 103523899 A CN103523899 A CN 103523899A CN 201310504694 A CN201310504694 A CN 201310504694A CN 103523899 A CN103523899 A CN 103523899A
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Abstract
The invention discloses a method for removing limnoperna lacustris from a long-distance raw water conveying pipeline by using the combined effect of sodium hypochlorite and water flushing, relating to a method for removing limnoperna lacustris from raw water conveying pipelines. The method comprises the following steps of continuously adding sodium hypochlorite to the long-distance raw water conveying pipeline for 5-11h, controlling the concentration of sodium hypochlorite in per liter of raw water to be 4-5mgL, and controlling the water flow velocity to be 0.8-3.5m/s, thereby completing the method for removing limnoperna lacustris from the raw water conveying pipeline through the combined effect of an oxidant and water flushing. According to the method, the advantages of sodium hypochlorite and water flushing in removal of limnoperna lacustris are integrated, sodium hypochlorite can dissolve byssus of limnoperna lacustris to enable the byssus to rapidly fall off, and water flushing can enable limnoperna lacustris to be rapidly removed from the water conveying pipeline, so that the dosage of medicaments is reduced. According to the method, the number of limnoperna lacustris in the raw water and the pipeline can be controlled effectively; by using the method, the operation is safe and convenient and has extremely high feasibility.
Description
Technical field
The present invention relates to a kind of method of removing fresh water mussel in former water water pipe, relate in particular to a kind of method that fresh water mussel in the former water water pipe of long distance is removed in clorox and sluicing combined action.
Background technology
Along with coming into operation of long distance water transfer project, in water-carriage system, biotic intrusion and stained problem also highlight gradually." biodeterioration " refers to that a large amount of attaching biologicals intrude in water delivery structures and related production equipment and adheres to, and density is up to 10000 ~ 100000/m
2, stained to body structure surface generation, corrosion structure, even blocking pipe, affects the normal operation of engineering.The Mytilidae species fresh water mussel of south China area growth has caused biodeterioration serious in water pipe, these shellfishes ceaselessly adhere in water-transmission line, growth, breeding, etching apparatus, blocking pipe, increase flow resistance, mortality after stain water surrounding, causes many detrimentally affects, fresh water mussel adheres in the important feature such as water pipe wall and seam, gate valve, even can cause security incident.Therefore, need effectively to remove the method for fresh water mussel in water pipe.
In water treatment procedure, conventional oxygenant also can reach the object of removing fresh water mussel, as clorox has solvency action to the byssus of fresh water mussel, can promote coming off of fresh water mussel, the amount that therefore can add clorox by controls reaches the object of removal fresh water mussel in water purification.But in actual pipeline, the quantity survey of fresh water mussel reaches tens tons, if through dispensing after a while, the fresh water mussel quantity of killing quickly and discharging is too much, can block pipeline and structures on the contrary, though can kill fresh water mussel by dispensing, its corpse can not disappear with the death of fresh water mussel, as cleared up and will have a strong impact on water quality not in time, and in the situation that oxidant concentration is lower, to the killing effect of fresh water mussel not obvious.Though visible, utilize separately oxygenant conventional in water purification can reach the object of killing fresh water mussel, exist a lot of not enoughly, still need the method for the removal fresh water mussel that is more suitable for applying in Practical Project.
Summary of the invention
In order to solve the existing problem of utilizing oxygenant to kill the fresh water mussel corpse blocking pipe that in former water water pipe, fresh water mussel may cause, the invention provides a kind of clorox and sluicing combined action and remove the method for fresh water mussel in former water water pipe, this method is applicable to the removal of fresh water mussel in the Long-distance Pipeline for Water Conveyance of south China area.
The object of the invention is to realize by following steps:
In the former water water pipe of long distance, add clorox, add continuously 5 ~ 11h, controlling clorox concentration in every liter of former water is 4 ~ 5mgL, and flow rate of water flow is 0.8 ~ 3.5m/s, completes the method for fresh water mussel in the former water water pipe of oxygenant and sluicing combined removal.
If completely fresh water mussel is killed and needs the long period, from economic angle analysis, and inadvisable, therefore controlling and adding continuously the time is 5 ~ 11h.Utilize simultaneously clorox can dissolve byssus make its come off rapidly and sluicing effect can effectively remove the fresh water mussel in water pipe, therefore, the invention provides a kind of economy, safety water treatment method.
The present invention combines clorox and the advantage of sluicing aspect removal fresh water mussel: clorox can dissolve the byssus of fresh water mussel, and it is come off rapidly, and sluicing can make fresh water mussel be removed rapidly in water pipe, saves adding of medicament.The present invention can effectively control the quantity of fresh water mussel in former water and pipeline, uses this technology, and easy-to-operate has high feasibility.
Embodiment
Below technical scheme of the present invention is further described, but does not limit to so, every technical solution of the present invention is modified or is equal to replacement, and do not depart from the spirit and scope of technical solution of the present invention, all should be encompassed in protection scope of the present invention.
Embodiment one: with water supply flow 500m
3/ h is above, pipe diameter more than 400mm, water delivery is example apart from south China area Long-distance Pipeline for Water Conveyance more than 5km, in former water water pipe, add clorox continuously, control clorox concentration in every liter of former water and reach 4 ~ 5mgL, flow rate of water flow is 1.5m/s.By the solvency action of short period of time byssus, can not cause the death of fresh water mussel, in growing apart from course of conveying, at the position fresh water mussel that flow velocity is more slow, also can again secrete byssus apposition growth, still can continue to breed the young, and the oxygenant of short period of time is killed the individuality that do not come off that can make in pipeline and is again recovered life, can not reach the object of thorough removing.So, in order to prevent that the secondary of fresh water mussel from adhering to and the recovery of vitality, still need to adopt for a long time oxygenant to kill, then removed in conjunction with the effect of sluicing.
In former water, clorox concentration reaches 4 ~ 5mg/L, and flow rate of water flow is 1.5m/s, and when during 5h, the clearance of fresh water mussel is 20%, 11h, the clearance of fresh water mussel is 50%.
Simple sluicing is to the removal effect of fresh water mussel not obvious, if coutroi velocity is 1.5m/s, during 11h, the clearance of fresh water mussel is only less than 20%.Visible, to compare with utilizing separately sluicing removal fresh water mussel, two kinds of methods are done the used time simultaneously, and effect is better than independent role, and can save the dosage of clorox.
Present embodiment can effectively be controlled the quantity of fresh water mussel in former water and pipeline, uses this technology, and easy-to-operate has high feasibility.
Embodiment two: present embodiment is different from embodiment one, controlling clorox concentration in former water is 4 ~ 5mg/L, and flow rate of water flow is 1m/s, and the time of adding is 10h.
Embodiment three: present embodiment is different from embodiment one, controlling clorox concentration in former water is 4 ~ 5mg/L, and flow rate of water flow is 2m/s, and the time of adding is 8h.
Embodiment four: present embodiment is different from embodiment one, controlling clorox concentration in former water is 4 ~ 5mg/L, and flow rate of water flow is 3m/s, and the time of adding is 6h.
Claims (5)
1. the method for fresh water mussel in the former water water pipe of long distance is removed in clorox and sluicing combined action, it is characterized in that described method steps is as follows: in the former water water pipe of long distance, add clorox, add continuously 5 ~ 11h, controlling clorox concentration in every liter of former water is 4 ~ 5mgL, flow rate of water flow is 0.8 ~ 3.5m/s, completes the method for fresh water mussel in the former water water pipe of oxygenant and sluicing combined removal.
2. the method for fresh water mussel in the former water water pipe of long distance is removed in clorox according to claim 1 and sluicing combined action, it is characterized in that in described former water, clorox concentration is 4 ~ 5mg/L, flow rate of water flow is 1.5m/s, and the time of adding is 5 ~ 11h.
3. the method for fresh water mussel in the former water water pipe of long distance is removed in clorox according to claim 1 and sluicing combined action, it is characterized in that in described former water, clorox concentration is 4 ~ 5mg/L, and flow rate of water flow is 1m/s, and the time of adding is 10h.
4. the method for fresh water mussel in the former water water pipe of long distance is removed in clorox according to claim 1 and sluicing combined action, it is characterized in that in described former water, clorox concentration is 4 ~ 5mg/L, and flow rate of water flow is 2m/s, and the time of adding is 8h.
5. the method for fresh water mussel in the former water water pipe of long distance is removed in clorox according to claim 1 and sluicing combined action, it is characterized in that in described former water, clorox concentration is 4 ~ 5mg/L, and flow rate of water flow is 3m/s, and the time of adding is 6h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310504694.8A CN103523899A (en) | 2013-10-24 | 2013-10-24 | Method for removing limnoperna lacustris from long-distance raw water conveying pipeline by using combined effect of sodium hypochlorite and water flushing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310504694.8A CN103523899A (en) | 2013-10-24 | 2013-10-24 | Method for removing limnoperna lacustris from long-distance raw water conveying pipeline by using combined effect of sodium hypochlorite and water flushing |
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| CN103523899A true CN103523899A (en) | 2014-01-22 |
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| CN201310504694.8A Pending CN103523899A (en) | 2013-10-24 | 2013-10-24 | Method for removing limnoperna lacustris from long-distance raw water conveying pipeline by using combined effect of sodium hypochlorite and water flushing |
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Cited By (2)
| 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 |
| CN112320970A (en) * | 2020-10-22 | 2021-02-05 | 天津水务集团有限公司 | Method for removing limnoperna lacustris in raw water pipeline |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1172961A (en) * | 1968-01-09 | 1969-12-03 | Kenneth Richards | Water Chlorinating Unit |
-
2013
- 2013-10-24 CN CN201310504694.8A patent/CN103523899A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1172961A (en) * | 1968-01-09 | 1969-12-03 | Kenneth Richards | Water Chlorinating Unit |
Non-Patent Citations (1)
| Title |
|---|
| 王睿: "长距离输水管线中淡水壳菜的氧化杀灭去除技术研究", 《中国优秀硕士论文学位论文全文数据库》 * |
Cited By (2)
| 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 |
| CN112320970A (en) * | 2020-10-22 | 2021-02-05 | 天津水务集团有限公司 | Method for removing limnoperna lacustris in raw water pipeline |
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Application publication date: 20140122 |