Water treatment methods based on ozone disinfection/ultraviolet disinfection/chlorine disinfection
An ozone disinfection and ultraviolet technology, which is used in sterilization/microdynamic water/sewage treatment, light water/sewage treatment, electrical digital data processing, etc. Difficulty in determining the amount of disinfection and other problems, to avoid the generation of disinfection risks, reduce risks and process costs, and achieve the effect of excellent applicability
Active Publication Date: 2020-07-21
TSINGHUA UNIV
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Problems solved by technology
In addition, the present invention also solves the problems of the limited types of inactivated pathogenic microorganisms, the generation of a large number of toxic and harmful disinfection by-products, and the difficulty in determining the disinfection dose in actual operation in the previous single disinfection treatment technology.
Method used
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Embodiment 1
[0185] A reclaimed water plant applied a set of sewage regeneration treatment methods, which sequentially used the ozone disinfection step, ultraviolet disinfection step and chlorine disinfection step of the present invention to carry out water treatment, effectively controlling the chroma of reclaimed water and the concentration of pathogenic microorganisms.
[0186] Depend on Figure 6 As shown, after the application of the present invention, the chromaticity value of the effluent is stable and less than 10 degrees, which meets the requirements of local standards for reclaimed water and the Japanese standard for recreational use of reclaimed water.
[0187] Figure 7 and Figure 8 Respectively, the number of fecal coliforms and total coliforms in and out of the reclaimed water plant after applying the present invention, wherein the quantity of fecal coliforms in the effluent is stably controlled below 100 / L, and the quantity of coliforms is stably controlled at 3 / L Below L,...
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The invention relates to a water treatment method based on ozone disinfection / ultraviolet disinfection / chlorine disinfection. The reclaimed water can be disinfected by ozone disinfection ultraviolet disinfection and chlorine disinfection in turn. According to the ozone, ultraviolet ray and chlorine-containing preparation dosage determination model provided by the invention, the application amountof ozone, ultraviolet ray and chlorine-containing preparation can be determined more accurately according to the standards or requirements to be satisfied. The invention solves the problems that the single disinfection technology only inactivates limited pathogenic microorganism species, a large number of toxic and harmful disinfection by-products are generated, and the disinfectant quantity is difficult to determine in actual operation. The invention can effectively remove the chroma and smell of the reclaimed water, improve the disinfection technical efficiency, control the quantity of the microorganisms in the effluent, reduce the operation cost of the disinfection process, and ensure the safety of the reclaimed water.
Description
technical field [0001] The invention belongs to the technical field of water treatment and disinfection, and in particular relates to an ozone / ultraviolet / chlorine detoxification method for regenerated water and a method for determining a disinfection dose. Background technique [0002] Water is an important resource for our human survival, but most of the water bodies in nature need to be treated and disinfected before they can be used in people's lives, so the technology of water treatment and disinfection has been born. The early liquid chlorine-based disinfection method caused widespread concern because it was prone to produce disinfection by-products, which led to research on other water treatment disinfection processes in the industry. At present, the disinfection technologies that exist in the industry include several common disinfection processes such as chlorine dioxide disinfection, ozone disinfection, ultraviolet disinfection, and sodium hypochlorite disinfection....
Claims
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IPC IPC(8): G06F30/20C02F1/50C02F1/32
CPCC02F1/32C02F1/50G06F30/20G06F30/333
Inventor 胡洪营徐子斌吴乾元巫寅虎
Owner TSINGHUA UNIV