فصلنامه نقشه و اطلاعات مکانی گیلان
پیاپی 1 (زمستان 1395)

Present research in order to reduce non-revenue water through cluster testing of meters was arranged in the Rasht city's water plant. In this study, rapid data intercommunication model based on Geography Information System GIS were considered in District Metering Area DMA. During the study, the consumption curve, Minimum Night Flow MNF and pressure distribution curves by water distribution network hydraulic model was investigated. The hydraulic model in compliance with GIS and WATERGEMS8.2 software in the form WATERGEMS8.2 was defined. The results of research ordered the change of 4058 meters with a negative measuring error.

Using convenient interpolation method can result to generate more precise and more accurate maps. The aim of this study is to determine the most appropriate interpolation method from a variety of Kiriging, invers distance weighting and variety of Co-Kiriging to zoning and drawing hydro-statics curves of Razjerd complex. For this purpose, the pressure of 60 different points of Razjerd complex was examined. The performance of inverse distance weighting (IDW) in pressure zoning was weaker than the Kiriging; and by increasing the power of reverse method, amount of R2 was decreased and the amount of RMSE was increased. The gained maps of simple Kiriging method had shown a perfect match with statistics obtained from installed logger barometers in complex. Generally, because of the grate accuracy, less computing and less requirement to data, the simple Kiriging method recommended to zoning pressure.

One of the the most important causes of Non-Revenue water is waste of water reduction. The factors, damaged consumers meters or lack of precision meters due to the presence of sediment resulting from chemical changes. Of the reasons for these changes can pointed to penetration the garbage leachate to water resources. Sediment or corrosive features water distribution network (the quality of the chemical) would be on the amount of waste-water supply network will be more effective. Rostam abad town landfill is in the Western town of drinking water sources and above of underground water resources. In this study, the process route of chemical quality parameters for Rostamabad in the past five years, was analyzed, the potential of corrosive and sediment of water according to the Langelier & Ryznar index was calculated. The changes of chemical parameters, respectively, of the total hardness and calcium, total Alkalinity, electrical conductivity, pH, sulfate and chloride origin years (1390-91) and the target years (1394-95) is compared. Due to the increase of qualitative parameters, in spite of that it seems that their impact is laid waste leachate, but still within the scope of the national standard and the WHO (World Health Organization). Study of corrosion and sedimentation of index values indicate that the water is a little balanced in terms of chemical quality and has low precipitation and weak. The impact of quality changes is increasing and must be taken seriously.

Several types of bacteria exist on the organic materials in anaerobic conditions. During lack of oxygen for normal respiration, they use nitrate as final electron acceptor instead of oxygen. This work tried to do aerobic respiration phase in the aeration unit as long as hydraulic time to (MCRT) for 8 hours in the wastewater treatment of Bandar Anzali by using bacteria fosterage of denitrification index. These bacteria can be activated in rich environment of organic materials and without oxygen which are widely found in the domestic absorption wells. The results of this work showed that the advantages of this method demonstrate remove denitrification manufacturing facility and reduce moss and algae growth in the wastewater treatment process outdoor channels.