CN100352772C - Control technology for tubificidae in tap water - Google Patents
Control technology for tubificidae in tap water Download PDFInfo
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- CN100352772C CN100352772C CNB2005100137077A CN200510013707A CN100352772C CN 100352772 C CN100352772 C CN 100352772C CN B2005100137077 A CNB2005100137077 A CN B2005100137077A CN 200510013707 A CN200510013707 A CN 200510013707A CN 100352772 C CN100352772 C CN 100352772C
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- limnodrilus hoffmeisteri
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Abstract
The present invention relates to a technology for cleaning and controlling tap water. In order to effectively control the water earthworm breeding in the tap water and ensure the water quality of water supply, the present invention provides the following control technical project: at the temperature of 20 DEG C, various disinfectants are used for killing and controlling the mature water earthworms in the tap water; when the thrown disinfectant is sodium hypochlorite, the thrown quantity is controlled under the condition that the residual chlorine value is more than 1.5 mg/L for 2 hours or the initial residual chlorine value is controlled at the value of more than 3.5 mg/L; or when the thrown disinfectant is hydrogen peroxide, the thrown quantity is controlled under the condition that the quality ratio of the hydrogen peroxide is about 0.01% and the hydrogen peroxide is processed for 2 hours; or when the thrown disinfectant is chlorine dioxide, the thrown quantity is controlled under the condition that the initial calculation concentration is 8 mg/L, and the chlorine dioxide is processed for 2 hours. The three disinfectants are directly thrown, and so long as the thrown quantity is controlled within the range, the water earthworms can be effectively killed. The control technology of the present invention can effectively control the water earthworm breeding in the tap water and ensure the water quality of water supply.
Description
Technical field
The present invention relates to the cleaning control techniques of tap water.
Background technology
The northern China urban water resource is surface water more than 70%, Organic pollutants are serious, and the body eutrophication phenomenon is general, algal bloom, various minitype aquatic animals are multiplied, and comprise that people are referred to as the zooplankton of " water flea " and the zoobenthos of " red worm " traditionally.These biologies are common in waterhead area and the secondary tank, and sometimes and even come across in the water tap of user side, this situation all is unallowed in any one national drinking water standard.
At the chironomus larvas that occurs in the tap water, the Bureau of Water Resources on ground such as China Shenzhen and the research that Running-water Company has carried out control measures have also obtained certain achievement at present.But for the Limnodrilus hoffmeisteri that occurs in the tap water, the effective Control Study of Shang Weijian.
At the Limnodrilus hoffmeisteri that occurs in the tap water, the subject matter that exists is at present:
1. the artificial culture difficulty that has Limnodrilus hoffmeisteri in the tap water has bigger difficulty in research
In some provinces and cities of northern China, for example: all once found Limnodrilus hoffmeisteri in the tap water on ground such as Tianjin, Xi'an, Tongliao, Wujiaqu City, Xinjiang.But, under the artificial culture condition, be difficult to survival, in research, bigger difficulty is arranged.Therefore caused very large disadvantageous effect for further carrying out biological study.
2. occurrence law is indefinite in tap water
Appearance in water body has the randomness on time and the space, can not determine correct time scope and spatial dimension that Limnodrilus hoffmeisteri occurs, can only study after appearance passively.
3. this kind biological growth stage complexity, difficult treatment
The different growth phases of Limnodrilus hoffmeisteri have different forms, and the condition of multiplying in pipe network is far different, and is very complicated.And with treatment process certain relation is arranged, be difficult to obtain unified control device.
4. the existing sterilization process in waterworks can't kill Limnodrilus hoffmeisteri in the water
Summary of the invention
For Limnodrilus hoffmeisteri in the effective control tap water multiply, guarantee water supply quality, the present invention proposes following control method:
Discuss at adult and ovum respectively below:
20 ℃, various sterilizing agents are to the control of killing of Limnodrilus hoffmeisteri adult in the tap water
When the sterilizing agent that adds was clorox, dosage is controlled at kept chlorine content 1.55mg/L more than 2 hours, and perhaps initial chlorine content is controlled at more than the 3.5mg/L;
Or the sterilizing agent that adds is when being hydrogen peroxide, and dosage is controlled at the mass ratio of hydrogen peroxide and handled 2 hours about 0.1 ‰;
Or the sterilizing agent that adds is when being dioxide peroxide, and it is that 8mg/L handled 2 hours that dosage is controlled at initial calculation concentration; More than three kinds of sterilizing agents be directly and add, as long as dosage is controlled in the above-mentioned scope, just Limnodrilus hoffmeisteri effectively can be killed.
Or the sterilizing agent that adds is when being chloramines, and addition method is to add chlorine earlier, adds ammoniacal liquor after 10 minutes, and the ratio control of ammonia and chlorine is at (3-4): 1; Keep chlorine content at 1.0-1.5mg/L, reaction can effectively be killed Limnodrilus hoffmeisteri after 120 minutes in antisepsis contact tank.
20 ℃, various sterilizing agents are to the killing method of Limnodrilus hoffmeisteri ovum in the tap water:
The mass ratio of hydrogen peroxide was handled 30 minutes 0.5 ‰, the worm's ovum in the ovum cocoon effectively can be killed, and made its stasi.
Because Limnodrilus hoffmeisteri must experience the stage that an ovum is grown in the ovum cocoon in growth course, the ovum cocoon is to be made of tough film, the adverse environment factor has the fine effect of resisting to external world, so, the ovum cocoon stage be in the Limnodrilus hoffmeisteri whole life history of process the most unmanageable stage, many sterilizing agents all in safety range, can not produce any tangible influence.At these Special Circumstances, adopt hydrogen peroxide to handle.The mass ratio of hydrogen peroxide was handled 30 minutes 0.5 ‰, the worm's ovum in the ovum cocoon effectively can be killed, and made its stasi.Observing the worm's ovum of superoxol immersion can find, the ovum grain has in various degree shrinkage, abnormal phenomenon to take place in its cocoon.
At the Limnodrilus hoffmeisteri that occurs in the tap water, to adopt the dosage that strengthens sterilizing agent under optimal temperature in its growth, grow particular stage at it and will take the special sterilizing agent method parallel with strengthening dosage.And this kind control techniques application in existing technical process has been brought into play effect, is effectively at preoxidation process not only, and has played directive significance in the chlorine disinfectant of technology end and chloramines disinfection treating processes.
Prepare the solution of killing of different sterilizing agents under laboratory condition, the solvent of employing is very big to the experimental result influence.In order to conform to practical situation, should adopt the tap water of aeration aerating dechlorination to prepare and kill solution, but not deionized water or distilled water.Beneficial effect of the present invention
That controls Limnodrilus hoffmeisteri in the tap water effectively multiplies, guarantees water supply quality.
Description of drawings
Fig. 1 is the killing effect figure of clorox to Limnodrilus hoffmeisteri in the tap water
Fig. 2 is the killing effect figure of hydrogen peroxide to Limnodrilus hoffmeisteri in the tap water
Fig. 3 is the killing effect figure of dioxide peroxide to Limnodrilus hoffmeisteri in the tap water
Fig. 4 is the killing effect figure of chloramines to Limnodrilus hoffmeisteri in the tap water
Fig. 5 be under identical sterilizing agent, the same chlorine content (chloramines, 2.0mg/L), to the comparison of adult and larva killing effect
Embodiment
Embodiment 1: various sterilizing agents kill the control effect
(1) clorox (see figure 1)
(2) hydrogen peroxide (see figure 2)
(3) dioxide peroxide (see figure 3)
(4) chloramines (see figure 4)
Embodiment 2: various sterilizing agents are to the inactivating efficacy of different growth phases
Limnodrilus hoffmeisteri will experience the different etap (ovum, larva, adult) in life cycle, and kills the also bigger difference (see figure 5) of control at different steps.
Claims (2)
1. the control method to Limnodrilus hoffmeisteri in the tap water is characterized in that, 20 ℃, utilizes a kind of adult to Limnodrilus hoffmeisteri in the tap water of selecting in the following sterilizing agent to kill:
When the sterilizing agent that adds was clorox, dosage is controlled at kept chlorine content 1.5mg/L more than 2 hours, and perhaps initial chlorine content is controlled at more than the 3.5mg/L;
Or the sterilizing agent that adds is when being hydrogen peroxide, and dosage is controlled at the mass ratio of hydrogen peroxide and handled 2 hours about 0.1 ‰;
Or the sterilizing agent that adds is when being dioxide peroxide, and it is that 8mg/L handled 2 hours that dosage is controlled at initial calculation concentration; More than three kinds of sterilizing agents be directly and add, as long as dosage is controlled in the above-mentioned scope, just Limnodrilus hoffmeisteri effectively can be killed;
Or the sterilizing agent that adds is when being chloramines, and addition method is to add chlorine earlier, adds ammoniacal liquor after 10 minutes, and the ratio control of ammonia and chlorine is at (3-4): 1; Keep chlorine content at 1.0-1.5mg/L, reaction can effectively be killed Limnodrilus hoffmeisteri after 120 minutes in antisepsis contact tank.
2. control method to Limnodrilus hoffmeisteri in the tap water, it is characterized in that, 20 ℃, utilize following sterilizing agent that the ovum of Limnodrilus hoffmeisteri in the tap water is killed: the mass ratio of hydrogen peroxide was handled 30 minutes 0.5 ‰, worm's ovum in the ovum cocoon effectively can be killed, make its stasi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100137077A CN100352772C (en) | 2005-06-07 | 2005-06-07 | Control technology for tubificidae in tap water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100137077A CN100352772C (en) | 2005-06-07 | 2005-06-07 | Control technology for tubificidae in tap water |
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| CN1699204A CN1699204A (en) | 2005-11-23 |
| CN100352772C true CN100352772C (en) | 2007-12-05 |
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| CNB2005100137077A Expired - Fee Related CN100352772C (en) | 2005-06-07 | 2005-06-07 | Control technology for tubificidae in tap water |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848491A (en) * | 2014-03-27 | 2014-06-11 | 山东建筑大学 | Killing method of red nematodes in biological aerated filter |
| CN106277237B (en) * | 2015-06-23 | 2019-06-14 | 中国石油化工股份有限公司 | A kind of method of heterotroph in control loop cooling water |
| CN111480656A (en) * | 2020-04-30 | 2020-08-04 | 同济大学 | Method suitable for efficiently preparing high-concentration disinfectant monochloramine in water works |
| CN113213717A (en) * | 2021-06-21 | 2021-08-06 | 杭州余杭城西净水有限公司 | Method for killing red nematodes in sewage treatment system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538490A (en) * | 1991-08-08 | 1993-02-19 | Mitsubishi Gas Chem Co Inc | Preventing method for sticking of marine sticking organism |
| US6254801B1 (en) * | 1998-03-23 | 2001-07-03 | Degussa Ag | Hardness-stabilizing percarboxylic acid solutions, a process for their preparation and their use |
| CN1583596A (en) * | 2004-05-31 | 2005-02-23 | 哈尔滨工业大学 | Water treatment for killing living animals such as fleas by O3/H2O2 |
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2005
- 2005-06-07 CN CNB2005100137077A patent/CN100352772C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538490A (en) * | 1991-08-08 | 1993-02-19 | Mitsubishi Gas Chem Co Inc | Preventing method for sticking of marine sticking organism |
| US6254801B1 (en) * | 1998-03-23 | 2001-07-03 | Degussa Ag | Hardness-stabilizing percarboxylic acid solutions, a process for their preparation and their use |
| CN1583596A (en) * | 2004-05-31 | 2005-02-23 | 哈尔滨工业大学 | Water treatment for killing living animals such as fleas by O3/H2O2 |
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| CN1699204A (en) | 2005-11-23 |
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