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Process for water treatment of synchronizing cyclops removing by ozone preoxydation with normal water treatment technology

A conventional treatment and water treatment technology, applied in the field of killing flea zooplankton in water so that it can be effectively removed, can solve the problem of increasing disinfection by-products, flea zooplankton is difficult to be effectively removed, and flea plankton cannot be completely removed animals etc.

Inactive Publication Date: 2008-05-07
TIANJIN WATERWORKS GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the flea zooplankton in the existing water is difficult to be effectively removed, thereby providing a water treatment method with low cost and good removal effect, which utilizes ozone pre-oxidation and conventional water treatment processes to synergistically remove fleas. First, Pre-pass ozone to the raw water before the conventional water treatment process. The amount of ozone introduced is 1.8-2.3mg / L, and then coagulation and sedimentation are carried out. After coagulation and sedimentation, filter at a filtration rate of 8-10m / h to achieve flea removal
The present invention solves the problems of increasing disinfection by-products and inability to completely remove flea zooplankton existing in the removal of flea zooplankton in water by pre-chlorination or pre-chlorine-ammonia pre-chlorination process. Water treatment technology through ozone, using the strong oxidation of ozone to inactivate daphnia zooplankton, so that it can be completely and effectively removed in the subsequent coagulation, sedimentation and filtration processes

Method used

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specific Embodiment approach 1

[0004] Specific Embodiment 1: The water treatment method of this embodiment is as follows: firstly, ozone is pre-passed into the raw water before the conventional water treatment process. The total time for pre-passing ozone and coagulation and sedimentation is more than 30 minutes. After coagulation and sedimentation, filter at a filtration rate of 8-10m / h to achieve flea removal.

specific Embodiment approach 2

[0005] Specific embodiment two: the water treatment process of this embodiment is as follows: first, pre-pass ozone to the raw water before the conventional treatment process, the feed rate of ozone is 2.0mg / L, then carry out coagulation precipitation, continue during coagulation precipitation Ozone is passed through to ensure that the pre-passed ozone oxidation contact time is more than 30 minutes, which can be 1h, 1.5h, 2.5h or 3h, and the coagulation and sedimentation time is 30min to 2h. The specific time is determined by the actual water plant process, which can be 30min. It can also be 1h, 1.5h or 2h. After coagulation and sedimentation, filter at a filtration rate of 10m / h.

specific Embodiment approach 3

[0006] Specific embodiment three: the water treatment process of this embodiment is as follows: First, pre-pass ozone to the raw water before the conventional treatment process, the amount of ozone introduced is 2.3mg / L, and the time for pre-passing ozone to carry out oxidation contact is 30min; After pre-passing ozone, carry out coagulation and sedimentation. The coagulation and sedimentation time is 20min to 2h. The specific time is determined by the actual water plant process, which can be 20min, or 1h or 1.5h; h filter rate can be filtered.

[0007] Below is one of the experiments done by the inventor for the technical solution of the present invention:

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Abstract

A process for removing the animal plankton, such as water flea, from water includes such steps as proportionally adding O3 to raw water, preoxidizing coagulating, depositing and filtering.

Description

Technical field: [0001] The invention relates to a water treatment method, in particular to a method for killing zooplankton such as fleas in water so that they can be effectively removed. Background technique: [0002] The eutrophication of the water body provides a living space for the massive reproduction of Cyclops, and the overfishing of humans has become the driving force for the rapid growth of Cyclops. Cyclops have been found in the clear water ponds of water plants and even in the water of pipe networks in some large and medium-sized cities in my country, and there have even been many accidents in which water fleas have appeared in pipe network water. Practice has shown that Cyclops have tenacious vitality, mobility, and easy penetration of filters. The larger Cyclops can be seen with the naked eye, like white meat worms. Its appearance in the user's water not only violates the regulations on sensory traits in the sanitary standards for drinking water, but also bri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/78C02F1/52
Inventor 崔福义刘冬梅吴雅琴何文杰韩宏大
Owner TIANJIN WATERWORKS GROUP
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