Device and method for rainwater collection, treatment and reuse in multi-span greenhouses

Abstract

The invention discloses a multi-span greenhouse rainwater collecting and treating reusing device which comprises a water gathering pipe, initial rainwater filtering devices, a double power supply programming controller, a safety diverting well, a modular water storage pond, a pressurizing pump, a multi-medium filter, an ozone generator, a Venturi ejector and a clean water pond, wherein the initial rainwater filtering devices are used for initially realizing filtration of rainwater of 2-5mm; the double power supply programming controller is used for controlling the liquid level of the water storage pond and switching of the initial rainwater filtering devices; the safety diverting well is used for precisely filtering rainwater and controlling the water quantity; the ozone generator and the Venturi ejector are used for generating ozone water. The invention further discloses a rainwater collecting and treating reusing method based on the device. According to the device and method disclosed by the invention, the collected rainwater is disinfected and sterilized by using the ozone water so as to solve the problem that the water quality in the water storage pond is deteriorated, so that the rainwater is recycled, and therefore, the utilization efficiency of a water resource is improved, the regional ecological environment is improved, and an extra economical benefit is further generated.

Description

technical field [0001] The invention relates to the technical field of rainwater collection and reuse, in particular to a device and method for rainwater collection, treatment and reuse in multi-span greenhouses. Background technique [0002] my country is a country with relatively poor water resources and extremely uneven temporal and spatial distribution. The year-to-year variation of water resources is large, and the distribution of precipitation and runoff is concentrated in the summer months; successively abundant and successively dry years occur alternately, resulting in frequent drought disasters in some areas and prominent contradictions between supply and demand of water resources. my country's total water resources are more than 2.8 trillion m 3 , ranking sixth in the world, but the per capita water resources are only 2300m 3 , about 1 / 4 of the world average level. 81% of the country's water resources are concentrated in the Yangtze River and the areas to the so...

AI Technical Summary

Problems solved by technology

Second, the water quality of water sources is deteriorating day by day, which cannot meet the functional requirements of the normal circulation of water bodies, greatly reducing the utilization of effective water resources

[0005] 1. The traditional FRP storage method is easy to grow algae in rainwater under sunlight, and microorganisms multiply, and the control of water quality is poor. BOD, COD, N + High content of harmful substances such as , SS

[0006] 2. FRP covers a large area

[0007] 3. Use the concrete storage method to make the anti-compressive steel keel and support, the cost is high, the cycle is often, the water quality is easy to deteriorate, and the concrete composition is easy to cause the hardness of the rainwater

[0008] 4. The concrete structure cannot be reused after excavation

[0009] 5. The traditional disinfection method adopts dosing liquid chlorine or chlorine dioxide, etc., which has residue and smell

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