CN1318319C - Water treatment method capable of killing midge larva by ozone - Google Patents
Water treatment method capable of killing midge larva by ozone Download PDFInfo
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- CN1318319C CN1318319C CNB2005100101465A CN200510010146A CN1318319C CN 1318319 C CN1318319 C CN 1318319C CN B2005100101465 A CNB2005100101465 A CN B2005100101465A CN 200510010146 A CN200510010146 A CN 200510010146A CN 1318319 C CN1318319 C CN 1318319C
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Abstract
The present invention discloses a water treating method using ozone for killing chironomid larvae, which relates to a water treating method. The currently used water treating methods using prechlorination technology for killing chironomid larvae have the defects that the safety of drinking water is influenced, and chironomid larvae can not be completely and effectively removed. In the method of the present invention, ozone is introduced into raw water in advance before conventional treatment, the introducing amount of ozone into each liter of the raw water ranges from 2.5 to 3.0 mg, and the contact time ranges from 20 to 30 min. The method of the present invention has obvious and reliable effects, and the method using ozone for killing chironomid larvae is superior to a killing method through chlorine gas in the aspects of killing effects, safety, economical property, etc. The present invention can effectively control chironomid larvae in water so that the qualification of water-quality indices of ex work water is ensured; in addition, the present invention has the advantages of safe and convenient operation and high-degree feasibility when the technology is used.
Description
Technical field:
The present invention relates to a kind of water treatment method, particularly a kind ofly kill chironomus larvas in the water so that its method that can effectively be removed.
Background technology:
The eutrophication of water body provides living space for a large amount of breedings of chironomus larvas, and human excessive fishing becomes the power of chironomus larvas rapid growth.In water factory's clean water basin of some big and medium-sized cities of China and even pipe network water, all once found chironomus larvas, even the accident of chironomus larvas took place to occur in a lot of pipe network water.Practice shows, the just chironomus larvas vitality tanacity of hatching, and motility is arranged, easily penetrate the filter tank.It occurs in user's water, not only violated in the drinking water sanitary standard regulation to the sensory properties index, bring bad organoleptic effects to the user, the more important thing is that most of chironomus larvases are intermediate hosts of pathogenic organisms in the water, thereby become a pathophorous important media, brought very big threat for people's water safety problem.At the problems referred to above, most water factories adopt prechlorination technology to control, but under the 10mg/L chlorine-throwed quantity, contact 30min, chironomus larvas has only 28.9% inactivation ratio (seeing accompanying drawing 1), there is following shortcoming simultaneously: the one, the pre-technology of throwing chlorine of employing has increased the by product after sterilizing in the water outlet such as haloform, halogenated acetic acids etc. are carcinogenic, the content of mutagenic matter, and drinking water safety has been caused influence; Even adopt this technology still can not carry out removal in full force and effect on the other hand to chironomus larvas, in the water outlet of filter tank, still can detect the existence of a small amount of chironomus larvas, make the safety water supply of water factory be difficult to guarantee.
Summary of the invention:
The present invention is exactly the inactivation ratio that exists at the existing method of killing a chironomus larvas problem low and that safety of drinking water is impacted, thereby a kind of safe and water treatment method that chironomus larvas all can be removed are provided.Utilize ozone to kill the water treatment method of chironomus larvas, the ozone feeding amount in the pre-logical ozone in the former water before conventional processing, every liter of former water is 2.5～3.0mg, and be that 30min gets final product duration of contact.Through actual verification, can reach high killing rate to the chironomus larvas in the former water with method of the present invention.The invention solves in the past and chironomus larvas in the water is removed existing increase disinfection byproduct (DBP) and can not remove the problem of chironomus larvas fully with prechlorination technology, the present invention adopts the water technology of pre-logical ozone, utilize the strong oxidizing property of ozone that chironomus larvas is carried out deactivation, make it in follow-up coagulation, precipitation and filtration process, obtain thoroughly effectively removing.Ozonization has very strong oxidation sterilizing effect, and does not produce " three cause " by products such as haloform, and the ozonize of water greatly reduces the mutagenicity of water than chlorination, and under the enough condition of ozone dosage, can not increase the mutagenicity of water.From the graphic representation of actual experiment effect as can be seen, it is that 10mg/L, duration of contact are when being 20 minutes in chlorine throwing amount that chlorine is killed method, its killing rate less than 20%, method is 3mg/L at ozone dosage, the killing rate when be 20 minutes duration of contact has reached 100% and ozone is killed.Experiment showed, method effect of the present invention obviously, reliable, as can be seen, ozone is killed chironomus larvas and is better than chlorine at aspects such as killing effect, security, economy angles and kills method.The present invention can effectively control the chironomus larvas in the water, thereby guarantees the qualified of effluent water quality index.Use method of the present invention in addition, easy-to-operate has high feasibility, is beneficial to and applies.
Description of drawings:
Fig. 1 adopts prechlorination technology to chironomus larvas inactivating efficacy curve synoptic diagram, and Fig. 2 adopts the inventive method to chironomus larvas inactivating efficacy curve synoptic diagram.
Embodiment:
Embodiment one: the water treatment method that present embodiment utilizes ozone to kill chironomus larvas is: the ozone feeding amount in the pre-logical ozone in the former water before conventional processing, every liter of former water is 2.5～3.0mg, and be that 20～30min gets final product duration of contact.
Embodiment two: present embodiment is, in Xiang Yuanshui, add ozone before the dosing coagulant, because it is very fast that ozone scatters and disappears in water, its killing action is mainly reflected in and feeds in back 20 minutes, the different actual water body that utilizes experimental summary to go out consumes the rule of ozone, in production practice, verify, draw actual water body feasibility and add scheme, when ozone dosage is 2.5mg/L, can reach the purpose of whole deactivation chironomus larvases, can when feeding ozone, adopt the ozone retrieving arrangement to reclaim.
Embodiment three: present embodiment is an actual tests, ozone feeding amount in every liter of former water is 2.5mg, and be 30min duration of contact, and described ozone is produced by ozonizer, add by closed conduit, ozone reaches 100% killing rate to the chironomus larvas in the former water.
Embodiment four: present embodiment is an actual tests, and the ozone dosage is 3.0mg/L, and be 20min duration of contact, the chironomus larvas in the former water is reached 100% killing rate.
Claims (2)
1. water treatment method that utilizes ozone to kill chironomus larvas is characterized in that: the ozone feeding amount in the pre-logical ozone in the former water before conventional processing, every liter of former water is 2.5～3.0mg, and be that 30min gets final product duration of contact.
2. the water treatment method that utilizes ozone to kill chironomus larvas according to claim 1 is characterized in that: the ozone feeding amount in every liter of former water is 2.5mg, and be 30min duration of contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100101465A CN1318319C (en) | 2005-07-01 | 2005-07-01 | Water treatment method capable of killing midge larva by ozone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100101465A CN1318319C (en) | 2005-07-01 | 2005-07-01 | Water treatment method capable of killing midge larva by ozone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1730408A CN1730408A (en) | 2006-02-08 |
| CN1318319C true CN1318319C (en) | 2007-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100101465A Expired - Fee Related CN1318319C (en) | 2005-07-01 | 2005-07-01 | Water treatment method capable of killing midge larva by ozone |
Country Status (1)
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| CN (1) | CN1318319C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381132B (en) * | 2008-10-22 | 2010-06-02 | 广州大学 | Application of magnetic separation filter in killing chironomus larvas in water |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146722A (en) * | 1999-11-24 | 2001-05-29 | Meidensha Corp | Raw water conveyance system for cooling equipment |
| JP2004024922A (en) * | 2002-05-23 | 2004-01-29 | Takao Ueda | Treatment method and treatment apparatus of infectious waste |
| JP2004034008A (en) * | 2002-06-29 | 2004-02-05 | Toru Ueda | Harmful organic material removal method using quick lime, hydrogen peroxide, and heat treatment |
| CN1477067A (en) * | 2003-07-10 | 2004-02-25 | 哈尔滨工业大学 | Water treatment method for utilizing ozone to kill flea zooplankton |
-
2005
- 2005-07-01 CN CNB2005100101465A patent/CN1318319C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146722A (en) * | 1999-11-24 | 2001-05-29 | Meidensha Corp | Raw water conveyance system for cooling equipment |
| JP2004024922A (en) * | 2002-05-23 | 2004-01-29 | Takao Ueda | Treatment method and treatment apparatus of infectious waste |
| JP2004034008A (en) * | 2002-06-29 | 2004-02-05 | Toru Ueda | Harmful organic material removal method using quick lime, hydrogen peroxide, and heat treatment |
| CN1477067A (en) * | 2003-07-10 | 2004-02-25 | 哈尔滨工业大学 | Water treatment method for utilizing ozone to kill flea zooplankton |
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| Publication number | Publication date |
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| CN1730408A (en) | 2006-02-08 |
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