Study of Application on Reverse Osmosis Concentrated Water Circulation in Desert Greenhouse

Abstract:

Aiming at the problem of concentrated water discharge amount is larger and the recovery rate is low in desert greenhouse for desalination of brackish water,Using reverse osmosis concentrated water circulation system.The results showed: With less dense water emissions, System desalinization rate decreases, system recovery rate increases, water flow in the system decreases, the system water pressure increases. In this test, when dense water emissions is 0.81m3/h, System desalinization rate reaches up to 91%, system recovery rate reached up to 81%, saving water above 20%. Major ion SO₄^2-, Cl^-, Ca²⁺ and Mg²⁺ removal rates are 96.2%, 92.7%,100% and 100%. The order of yield and benefit on Planting pepper are: wheel irrigation drip > water drip > mixed irrigation drip > raw water drip irrigation under different irrigation modes.Benefit-cost ratio of wheel irrigation drip ,water drip and mixed irrigation drip are 17.68,13.61 and 4.61.

• Periodical: Applied Mechanics and Materials (Volumes 409-410)
• Pages: 287-293
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.409-410.287
• Online since: September 2013
• Authors: Xin Fang Yan, Jun Cang Tian
• Keywords: Benefit-Cost Ratio, Concentrated Water Circulation, Desert Greenhouse, Reverse Osmosis

References

[1] K. Wang S.P. Liu ,S.M. Wang. Membrane separation technology, [M], Chemical Industry Press, Beijing, 2001. In chinese.

[2] Dow membrane manual，(2005).

[3] W.Y.Q. Di. Integrated Membrane Technology Using in Sewage Resource" [D], Master, s degree thesis of University of Jinan，2012. In chinese.

[4] Yan Qu, Dawei Jing, YuXing Yang, Journal of Tianjin Institute of Urban Construction, 2012, 18(4): 286-290. In chinese.