Neuro-fuzzy inference system Prediction of stability indices and Sodium absorption ratio in Lordegan rural drinking water resources in west Iran

Abstract

According to World Health Organization guidelines, corrosion control is an important aspect of safe drinking-water supplies. Water always includes ingredients, dissolved gases and suspended materials. Although some of these water ingredients is indispensable for human beings, these elements more than permissible limits, could be endanger human health. The aim of this study is to assess physical and chemical parameters of drinking water in the rural areas of Lordegan city, also to determine corrosion indices. This cross-sectional study has carried out with 141 taken samples during 2017 with 13 parameters, which has been analyzed based on standard method and to estimate the water quality indices from groundwater using ANFIS. Also with regard to standard conditions, results of this paper are compared with Environmental Protection Agency and Iran national standards. Five indices, Ryznar Stability Index (RSI), Langlier Saturation Index (LSI), Larson-Skold Index (LS), Puckorius Scaling Index (PSI), and Aggressive Index (AI) programmed by using Microsoft Excel software. Owing to its simplicity, the program, can easily be used by researchers and operators. Parameters included Sulfate, Sodium, Chloride, and Electrical Conductivity respectively were 13.5, 28, 10.5, and 15% more than standard level. The amount of Nitrate, in 98% of cases were in permissible limits and about 2% were more than standard level. Result of presented research indicate that water is corrosive at 10.6%,89.4%,87.2%,59.6% and 14.9% of drinking water supply reservoirs, according to LSI, RSI, PSI, LS and AI, respectively.

Data on quality indices of groundwater resource for agricultural use in the Jolfa, East Azerbaijan, Iran

“…A total of 460 samples were analyzed over 11 years. Physical and chemical parameters of Jolfa city water samples were analyzed following a standard method [18] , [19] , [20] , [21] , [22] , [23] , [24] . Number of samples in years studied (2003–2013) presented in Table 4 .…”

Data on groundwater quality, scaling potential and corrosiveness of water samples in Torbat-e-Heydariyeh rural drinking water resources, Khorasan-e-Razavi province, Iran

“…In this cross-sectional study 188 samples from 47 water sources were taken, 18 parameters were evaluated according to the standard method, also in terms of Standard compliance were compared with Iran and EPA water standards [13] , [14] , [15] , [16] , [17] . Experiments conducted in two general categories of device experiments and Titration.…”

Data on health risk assessment of fluoride in water distribution network of Iranshahr, Iran

“…The water samples were transported to the laboratory in 4° and stored in a dark place at room temperature until analysis. Fluoride concentration of water samples were analyzed by SPADNS method using UV-visible Spectrophotometer (DR/5000, USA) [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] .…”