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A device and method for removing trihalomethanes from water

A trihalomethane and water removal technology, which is applied in the field of water treatment, can solve problems such as the difficulty in realizing trihalomethane emergency treatment, the long construction period of microporous aeration pipelines, and the inability to control the aeration volume well, achieving comprehensive Low processing cost, simple and fast construction, and the effect of tiny bubbles

Active Publication Date: 2018-02-16
GRANDBLUE ENVIRONMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method has the following problems: the system is relatively complex, blower equipment needs to be installed, and the construction period of the microporous aeration pipeline is long. It is not suitable for the layout in the clean water tank that is basically closed and requires a short water stop time. The cost is high and the flexibility is poor.
Once the layout in the clean water tank is improper, the aeration rate cannot be well controlled, and the chlorine gas in the clean water tank will be blown out too quickly, making it difficult to realize the emergency treatment of excess trihalomethanes in the clean water tank

Method used

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  • A device and method for removing trihalomethanes from water
  • A device and method for removing trihalomethanes from water
  • A device and method for removing trihalomethanes from water

Examples

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Embodiment 1

[0047] Reference figure 1 And combine figure 2 , This embodiment discloses a device for removing trihalomethanes from water, including several aeration equipment 1, start-up equipment 2, detection equipment 3 and automatic control system 4;

[0048] Each aeration device 1 includes: a rain cap 11, an inflator 12, a pontoon 13, a sealing tube 14 and a jet 15; the rain cap 11 is covered above the inflator 12; the pontoon 13 They are installed on the left and right sides of the inflator 12 respectively; the sealing cylinder 14 is connected to the lower end of the inflator 12; the jet 15 is installed at the lower end of the sealing cylinder 14. The starting device 2 includes an inflator motor 21 and an ejector motor 22; the inflator motor 21 is connected to the inflator 12; the ejector motor 22 is connected to the ejector 15. The detection device 3 includes: a flow meter 31, a temperature sensor 32, a residual chlorine detector 33, and a trihalomethane detector 34. The automatic co...

Embodiment 2

[0058] The designed water volume of a water plant is 20000m 3 / d, Liquid chlorine is used as a disinfectant, and the concentration of chloroform in the effluent of the clean pool is 10.0~265.0μg / L. According to the "Sanitary Standards for Drinking Water GB5749-2006", the content of chloroform does not exceed 60ug / L; therefore , Up to 4.4 times exceeding the standard.

[0059] 1) The device and method of the present invention are used as emergency treatment measures, and the device for removing trihalomethanes from water described in Example 1 is selected, and the maximum aeration volume is 1000m 3 / h, according to the maximum water supply capacity of the water plant 1000m 3 / h, the aeration equipment 1 is arranged according to the air-to-water ratio of 5:1, and the number of aeration equipment 1 is 5; starting from the center of the total length of the clear pool corridor, they are arranged in sequence to the rear section, and the aeration equipment 1 The installation distance is ...

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Abstract

The invention discloses an apparatus and a method for removing trihalomethane from water. The apparatus comprises a plurality of aeration devices, a starting device, a detection device and an automatic control system; each of the aeration devices comprises a rain shading cap, an inflator, a floating drum, a sealing drum and an ejector; the starting device comprises an inflation motor and an ejector motor; the detection device comprises a flow meter, a temperature sensor, a residual chlorine detector and a trihalomethane detector; and the automatic control system comprises a PLC controller and a frequency converter. The method comprises the following steps: laying the aeration devices, setting the PLC controller, arranging the detection device, starting the detection device, and controlling the inflation motor according to the concentration of trihalomethane. The apparatus can rapidly and efficiently remove standard exceeding trihalomethane and like pollutants from water, and realizes no need of pipeline laying in the installation process, and chlorine removed by the apparatus is sucked into water and is used to aerate, so reservation of enough free residual chlorine in water is guaranteed.

Description

Technical field [0001] The invention relates to the technical field of water treatment, in particular to a device and method for removing trihalomethanes from water. Background technique [0002] Traditional water supply plants use conventional water treatment processes, the steps of which are "coagulation-sedimentation-filtration-disinfection". Among them, the disinfection process is the last step of the traditional water supply plant process and the most critical link to ensure the biological safety of the factory water quality. However, the existing disinfection process cannot overcome the problem of the generation of disinfection by-products, because the disinfection by-products have "three causes", which can cause cancer, teratogenesis, and mutagenesis on the human body. While increasing disinfection efforts to ensure the elimination of pathogenic microorganisms, the amount of disinfection by-products has also been increased, leading to an increased risk of chemical safety ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/20C02F101/36
CPCC02F1/20C02F2101/36C02F2209/005
Inventor 何赞端陈忠林金铎杨文杰
Owner GRANDBLUE ENVIRONMENT CO LTD
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