Method for removing cyclop type zooplanktons during treatment of drinking water

A technology for drinking water treatment and zooplankton, applied in the direction of light water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of increased disinfection by-products and difficulty in effectively inactivating microorganisms, and achieve stable removal effect. The effect of low cost and simple operation

Inactive Publication Date: 2014-04-16
HOHAI UNIV
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Problems solved by technology

Studies have shown (Tang K W, Environmental microbiology, 2011,13(2): 378-39), the surface protection of zooplankton increases the resistance of microorganisms carried by zooplankton to residual chlorine by 30-120 times, and the microorganisms that are not inactivated release into water, restores to 10 within 3 days 6 Therefore, it is difficult to effectively inactivate the microorganisms carried by the

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  • Method for removing cyclop type zooplanktons during treatment of drinking water
  • Method for removing cyclop type zooplanktons during treatment of drinking water
  • Method for removing cyclop type zooplanktons during treatment of drinking water

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Embodiment 1

[0014] In this example, the advection sedimentation tank of a water plant in Jiangsu Province was taken as the object, and the application research on the control of Cyclops zooplankton in the effluent water of the sedimentation tank was carried out. Such as figure 1 As shown, the ultraviolet lamps are arranged along both sides of the sump of the sedimentation tank, and above the water surface along the horizontal direction of the sump. UV-A 365 ultraviolet lamps (mainly generating a peak at 365nm) are used, and the underwater ultraviolet radiation meter The ultraviolet light intensity at the bottom edge of the water collection tank measured by the light intensity measuring instrument is 20~25μW / cm 2 . After irradiating with ultraviolet light for 5 minutes, use a 30 μm zooplankton filter to filter 20L of source water and sinking water respectively, and sample zooplankton in the water for detection.

[0015] Invert the filter, rinse the filter with distilled water to obtain a...

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Abstract

The invention provides a method for removing cyclop type zooplanktons during the treatment of drinking water. The method comprises a step of precipitating water source water by using a precipitation tank, wherein ultraviolet lamps are arranged in the water collecting sump area of the precipitation tank, and are arranged at the upper parts on the two sides of a water collecting sump in the length direction of the water collecting sump, and the cyclop type zooplanktons with negative phototaxis under certain radiation wavelengths can only move away from water collection holes. According to the method, stable removal effects can be achieved under the condition of not adding a chemical agent; the method is easy to operate, safe, reliable and low in input cost.

Description

technical field [0001] The invention belongs to the technical field of drinking water treatment, in particular to a method for removing hydrozoan zooplankton in drinking water treatment. Background technique [0002] In recent years, with the aggravation of eutrophication in raw water and the influence of human activities such as fishing, zooplankton have multiplied in large numbers, resulting in a significant increase in the number of Cyclops zooplankton entering the water plant. The conventional drinking water treatment process cannot completely remove the hydrozoan zooplankton, and the hydrozoan zooplankton breeds in the sand filter tank and the charcoal pond. Cyclops-like zooplankton can penetrate the filter tank and enter the water supply pipe network, resulting in biological risk problems of water quality. Effective removal of Cyclops zooplankton in the process of drinking water treatment has important practical significance for controlling the sensory properties ...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/52
Inventor 林涛陈卫曹钰蔡博
Owner HOHAI UNIV
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