Ultraviolet and ozone combined disinfection method for nutrient solution

Abstract

The invention belongs to the field of liquid disinfection methods, and particularly relates to an ultraviolet-ozone combined disinfection method for a soil-less culture nutrient solution. The method comprises the following steps: (1) a liquid to be disinfected in a nutrient solution pool flows into a pipeline through the power provided by a water pump; (2) the nutrient solution enters a filter for filtration; (3) the filtered nutrient solution flows into a Venturi tube ejector and is mixed with ozone generated by an ozone generator to kill pathogenicbacteria by utilizing the strong oxidizing property of the ozone; (4) the nutrient solution which is sterilized by the ozone flows into an ultraviolet disinfector to further kill microorganisms which are not killed by the disinfection of the ozone; and (5) the sterilized nutrient solution flows out of a liquid outlet of the ultraviolet disinfector and enters a liquid storage tank to finish the whole disinfection process. The nutrient solution greatly improves the sterilization effect through the filtration of the filter, the disinfection of the ozone and the disinfection of ultraviolet rays, and ensures that the quantity of the microorganisms in the nutrient solution is minimized; and the complete set of device has the advantages of low cost, small energy consumption, and expense economization.

Description

Technical field [0001] The invention belongs to the field of liquid disinfection methods, and specifically relates to an ultraviolet ozone combined disinfection method of soilless cultivation nutrient solution. Background technique [0002] Soilless cultivation refers to a method of cultivating plants using nutrient solutions instead of natural soil. Soilless cultivation systems are divided into two categories: open system and closed system, depending on whether the nutrient solution is collected and reused. In the open soilless cultivation system, the nutrient solution is not recycled. After the crops absorb the excess nutrient solution, it is discharged into the environment, which will cause certain pollution to the environment. In the closed soilless cultivation system, the nutrient solution is recycled, saving water and fertilizer, and reducing environmental pollution. Therefore, the development of soilless cultivation at home and abroad has gradually shown a trend of ...

AI Technical Summary

Problems solved by technology

[0018] The present invention aims at the problems of large environmental pollution, harm to humans and animals, high operating cost, poor effect, and low efficiency in the above-mentioned existing methods, and provides a new method that can be applied to sterilizing nutrient solutions in closed soilless cultivation systems, The disinfection method of combination of ultraviolet rays and ozone is characterized in that the method comprises the following steps:

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