Investigation Of Irrigated Water Qualities In Xinjiang Farmland And Discussion Of Treatment Methods With It

Analyze and determine south and north of Xinjiang that irrigates drainage the density, turbid degree, total content of organic matter and content of insoluble matter of water, and analysis the separated, subsided performance to physics of the insoluble mattering. Determines the membrane pollution index of water samples, having analyzed the trend of appearing that the calcium carbonate and calcium sulfate precipitate, the necessity that and should be taken suppresses the measure.In 9 water samples, the density range of every ion is: Na+∈[0.0141 , 0.1058 ] (g/L), K+∈[0.0012, 0.0511](g/L), Ca2+∈[0.2233, 2.408 ] (g/L), Mg2+∈[0.3668, 8.482 ] (g/L),Cl-∈[1.030, 27.42], SO42-∈[0.453, 2.682 ] (g/L), HCO3-∈[0, 0.01910](g/L), CO32-∈[0.1420, 0.7031 ] (g/L), NO3-∈[0, 0.0620 ] (g/L), HPO42-∈[0.00002, 0.0016](g/L); Conductance rate∈[0.3080, 9.240 ] (×10-4μs/cm)); Turbid degree∈[10.90, 186.5 ] (NTU ); content of insoluble matter∈[0.0055, 1.2420 ] (g/L); Chemical oxygen demand∈[15.70, 58.60 ] (COD); pollution index of membrane∈[3.3, 4.4 ].In 9 water samples, can appear that calcium carbonate precipitate are 1,2,3,4,5,7 water sample, through add getting sour or add scale control pharmaceutical may suppress the carbonic acidIn 9 water samples, the ones that can appear the calcium sulfate precipitate are 4,6 water sample, can be prevented through the method to add scale control pharmaceutical (SHMP ).Have discussed electro dialysis desalination technology and RO desalination technology, it is comparatively rational for the result to deal with the farmland and drain off water with RO technology.