CN100386269C - Process for water treatment of synchronizing cyclops removing by ozone preoxydation with normal water treatment tech. - Google Patents
Process for water treatment of synchronizing cyclops removing by ozone preoxydation with normal water treatment tech. Download PDFInfo
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- CN100386269C CN100386269C CNB2005100098903A CN200510009890A CN100386269C CN 100386269 C CN100386269 C CN 100386269C CN B2005100098903 A CNB2005100098903 A CN B2005100098903A CN 200510009890 A CN200510009890 A CN 200510009890A CN 100386269 C CN100386269 C CN 100386269C
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Abstract
The present invention discloses a water treatment method through depulization by the cooperation between ozone preoxidation and conventional water treatment technology, which relates to a water treatment method. At present, ozone oxidation removal technique in view of flea type zooplankton in water does not exist. The water treatment method through depulization by the cooperation between ozone preoxidation and conventional water treatment technology of the present invention comprises the steps that ozone is introduced in advance into raw water before the conventional water treatment technology, and the amount of introduced ozone ranges from 1.8 to 2.5 mg/L; coagulating sedimentation is carried out; the total time length of ozone introduction in advance and coagulating sedimentation is more than 30 min; filtration is carried out at the filtering speed of 8 to 10 m/h after coagulating sedimentation; consequently, depulization is realized. The present invention solves the problems of disinfection by-product increase and no complete removal of flea type zooplankton existing in the removal of flea type zooplankton in water through the old prechlorination technology of adding chlorine in advance or adding chlorine and ammonia in advance, and the strong oxidation property of ozone is used for inactivating water flea type zooplankton so that the water flea type zooplankton is thoroughly and effectively removed in the subsequent technology of coagulation, sedimentation and filtration.
Description
Technical field:
The present invention relates to a kind of water treatment method, particularly a kind ofly kill flea class zooplankton 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 Cyclop class, and human overfishing becomes the power of Cyclop 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 Cyclop, even the accident of Cyclop took place to occur in a lot of pipe network water.Practice shows, Cyclop class vitality tanacity, and motility is arranged, easily penetrate the filter tank.Bigger Cyclop naked eyes as seen, like the white meat worm, it occurs in user's water, has not only violated in the drinking water sanitary standard the regulation of sensory properties index, has brought bad organoleptic effects to the user, what is more important, most of Cyclopoidas are the vectors such as pathogenic organisms in the water such as schistosomicide, nematode, thereby become a pathophorous important media, have brought very big threat for people's water safety problem, therefore, must from tap water, remove effectively.At the problems referred to above, most water factories adopt the pre-prechlorination technology of throwing chlorine or throwing chloro-ammonia in advance to control, but there is following shortcoming in it: the one, and adopt and to throw chlorine or to throw in advance that the chloro-ammonia process has increased in the water outlet by product after the sterilization such as haloform, halogenated acetic acids etc. are carcinogenic, the content of mutagenic matter in advance, 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 water flea class zooplankton, in the water outlet of filter tank, still can detect the existence of a small amount of flea class zooplankton, make the safety water supply of water factory be difficult to guarantee.The existing ozone that utilizes carries out water technology only for utilizing ozone to carry out sterilization, sterilize and carry out sewage disposal, and this use obtained certain achievement, but does not also carry out the technology of ozone oxidation removal at present at flea class zooplankton in the water.The applicant applied for utilizing O
3/ H
2O
2The water treatment method of kill fleas class zooplankton, application number are 200410013794.1, but because the hydrogen peroxide in this application plays keying action, so exist the cost problem of higher to a certain extent; In addition, the emphatically purpose of this application is the flea class zooplankton in the water is carried out " killing ", and for reaching " killing " effect, the hydrogen peroxide composition that is absolutely necessary.
Summary of the invention:
Purpose of the present invention is exactly to be difficult to the problem effectively removed at flea class zooplankton in the existing water, thereby provide the water treatment method that utilizes ozone pre-oxidation and the collaborative depulization of conventional water treatment process that a kind of cost is low, removal effect is good, at first, pre-logical ozone in the former water before conventional water treatment process, the feeding amount of ozone is 1.8～2.3mg/L, carry out coagulating sedimentation then, pre-logical ozone and total duration of carrying out coagulating sedimentation be more than 30min among the Xiang Yuanshui, filters by the filtering velocity of 8～10m/h behind the coagulating sedimentation and can realize depulization.The invention solves the prechlorination technology of using pre-throwing chlorine in the past or throwing chloro-ammonia in advance removes existing increase disinfection byproduct (DBP) and can not remove the problem of flea class zooplankton fully flea class zooplankton in the water, the present invention adopts the water technology of pre-logical ozone, utilize the strong oxidizing property of ozone that water flea class zooplankton is carried out deactivation, make it in follow-up coagulation, precipitation and filtration process, obtain thoroughly effectively removing.The problem that the present invention solves emphatically is not that the flea class zooplankton in the water is carried out " deactivation ", but in conjunction with follow-up water technology, flea class zooplankton in the water is carried out effectively " removal ", this method that flea class zooplankton in the water is effectively removed, than with ozone, hydrogen peroxide in conjunction with concerning the method that flea class zooplankton is killed, one can play the effect of equally flea class zooplankton being removed, two can save cost, only need ozone just can realize purpose, and reduced operation; 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.The present invention can effectively control the water flea class zooplankton in the water, thereby guarantees the qualified of effluent water quality index.In addition, the present invention does not need to carry out large-scale technological transformation based on the existing water technology of water factory, has higher operability; Ozone pre-oxidation technology and conventional water treatment process are worked in coordination with depulization, give full play to each unitary effect, help the economical operation of water factory's treatment process, have advantages of high practicability.
Embodiment:
Embodiment one: the water treatment method of present embodiment is, at first, pre-logical ozone in the former water before conventional water treatment process, the feeding amount of ozone is 1.8～2.5mg/L, carry out coagulating sedimentation then, pre-logical ozone and total duration of carrying out coagulating sedimentation be more than 30min among the Xiang Yuanshui, filters by the filtering velocity of 8～10m/h behind the coagulating sedimentation and can realize depulization.
Embodiment two: the water treatment procedure of present embodiment is as follows: at first, pre-logical ozone in the former water before conventional treatment process, the feeding amount of ozone is 2.0mg/L, carry out coagulating sedimentation then, continue logical ozone during coagulating sedimentation, guarantee that pre-logical ozone carries out oxidation duration of contact more than 30min, can be 1h, 1.5h, 2.5h or 3h, coagulating sedimentation action time is 30min～2h, the concrete time is by the technology decision of actual water factory, can be 30min, also can be 1h, 1.5h or 2h, filter by the filtering velocity of 10m/h behind the coagulating sedimentation and get final product.
Embodiment three: the water treatment procedure of present embodiment is as follows: at first, pre-logical ozone in the former water before conventional treatment process, the feeding amount of ozone is 2.3mg/L, the time that logical in advance ozone carries out the oxidation contact is 30min; Pre-logical ozone carries out coagulating sedimentation after finishing, and coagulating sedimentation action time is 20min～2h, and the concrete time can be 20min by the technology decision of actual water factory, also can be 1h or 1.5h; Filter by the filtering velocity of 8.5m/h behind the coagulating sedimentation and get final product.
Be one of experiment of doing at technical scheme of the present invention of contriver below:
Certain water factory's source water is experimentized, and the condition of water quality of detection is: water temperature is 24 ℃, and the pH value is 7.4, and turbidity is 16～18NTU, and permanganate index is 3.72mg/L, and algae content is 4.2 * 10
6Individual/L, Cyclop content is 10～20/L.
Experiment divides to be carried out for three times, the ozone amount that adds successively in the former water is 1.5mg/L, 1.8mg/L, 2.5mg/L, adding ozone, to carry out the time of oxidation duration of contact all be 30min, add ozone and make itself and former water carry out beginning to carry out coagulating sedimentation after oxidation 10min duration of contact, the coagulating sedimentation time is 40min.Filter behind the coagulating sedimentation, the filtering velocity in the filtration experiment is respectively 8m/h, 9m/h and 10m/h, and filtration time all is 8h.Experimental result shows that except that experiment for the first time, when the ozone dosage was 1.8mg/L and 2.5mg/L, the Cyclop quantity in the water of filter back was 0.
As seen, with pre-throwing ozone of the present invention and coagulating sedimentation, filter joint synergy, can realize that 100% removes the purpose of Cyclop.
Claims (3)
1. water treatment method that utilizes the collaborative depulization of ozone pre-oxidation and conventional water treatment process, it is characterized in that: at first, pre-logical ozone in the former water before conventional water treatment process, the feeding amount of ozone is 1.8～2.3mg/L, carry out coagulating sedimentation then, pre-logical ozone and total duration of carrying out coagulating sedimentation be more than 30min among the Xiang Yuanshui, filters by the filtering velocity of 8～10m/h behind the coagulating sedimentation and can realize depulization.
2. the water treatment method that utilizes ozone pre-oxidation and the collaborative depulization of conventional water treatment process according to claim 1, it is characterized in that water treatment procedure is as follows: at first, the illogical in advance ozone of former water before conventional treatment process, the feeding amount of ozone is 2.0mg/L, carry out coagulating sedimentation then, continue logical ozone during coagulating sedimentation, guarantee that pre-logical ozone carries out oxidation duration of contact more than 30min, coagulating sedimentation action time is 30min～2h, filters by the filtering velocity of 10m/h behind the coagulating sedimentation to get final product.
3. the water treatment method that utilizes ozone pre-oxidation and the collaborative depulization of conventional water treatment process according to claim 1, it is characterized in that water treatment procedure is as follows: at first, pre-logical ozone in the former water before conventional treatment process, the feeding amount of ozone is 2.3mg/L, and the time that logical in advance ozone carries out the oxidation contact is 30min; Pre-logical ozone carries out coagulating sedimentation after finishing, and coagulating sedimentation action time is 20min～2h; Filter by the filtering velocity of 8.5m/h behind the coagulating sedimentation and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100098903A CN100386269C (en) | 2005-04-13 | 2005-04-13 | Process for water treatment of synchronizing cyclops removing by ozone preoxydation with normal water treatment tech. |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100098903A CN100386269C (en) | 2005-04-13 | 2005-04-13 | Process for water treatment of synchronizing cyclops removing by ozone preoxydation with normal water treatment tech. |
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| CN1693226A CN1693226A (en) | 2005-11-09 |
| CN100386269C true CN100386269C (en) | 2008-05-07 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2005
- 2005-04-13 CN CNB2005100098903A patent/CN100386269C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (4)
| Title |
|---|
| 氧化剂对剑水蚤类浮游动物的灭活效能及影响. 崔福义，林涛等.哈尔滨工业大学学报，第36卷第2期. 2004 |
| 氧化剂对剑水蚤类浮游动物的灭活效能及影响. 崔福义，林涛等.哈尔滨工业大学学报，第36卷第2期. 2004 * |
| 水中剑水蚤类浮游动物去除技术发展状况研究. 刘冬梅，崔福义.哈尔滨工业大学学报，第36卷第4期. 2004 |
| 水中剑水蚤类浮游动物去除技术发展状况研究. 刘冬梅，崔福义.哈尔滨工业大学学报，第36卷第4期. 2004 * |
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