جستجوی مقالات مرتبط با کلیدواژه « گندزدایی » در نشریات گروه « شیمی »

The nano silver particles has been attractive the large number of researchers. These properties are due to the very high volume ratio of these particles. Although there are different methods have been offered for the synthesis of nano particles of silver but the chemical recovery method because of the simplicity and ability to control and particle's size is the most common methods to product nano particles. In this research the effect of silver disinfection in water has been investigated. The silver particles are produced with using silver nitrate and sodium citrate and then the polyamide is coated on the polymer and used as absorbent filter. Morphology was determined by absorbing the surface and the shape and size of nano particles with an electron microscope and also it the same about the present of silver in the polymer after coating with an X-ray diffraction device (EDAX). The nutrient agar is used for investigate of the effect of nano silver disinfection in water pollution (Escherichia coli) from the general culture medium and also the effects of changing of power hydrogen (pH) temperatures and duration of contact required for disinfection water studied.

providing safe drinking water for human society is of vital importance. the purpose of this study was to determine the importance and performance of chlorination in the distribution network of drinking water in the level of utility of microbial quality and chlorination status in Tabriz and its surrounding villages.

this descriptive-analytical study, environmental and library study, and the necessary information were prepared using data collected from other articles and Tabriz water and Wastewater Company. after analysis, it was analysed.

the results of the study showed that the chlorination method used in the villages is a type of liquid chlorination or pottery method. chlorine is injected into the liquid by pressure. the chlorine type is used as a powder or crystalline perflorester. 95.5% of the rural population of the East Azarbaijan province benefited from water utilization. every day, various stages, such as chlorination, chlorination, sampling and testing, are carried out at the 7th level laboratory of the province, so that people will enjoy a healthy blue dream. The health center also monitors the company's performance and controls the supply of water and water entering and extinguishing, so that the water supplied is free from any pollution. of the 127 villages of over 20 households without plumbing, plumbing 95 villages are being run in rural or rural communities. about 400 villages, 20 percent of the province's population, have water facilities but are not covered by this company.

due to the fact that in recent years, the important chlorination of rural water reservoirs has been delegated to rural water and Sewage company, and perhaps the juicy juices of this company have not understood the necessity of the problem, in many villages of the country that covered this companies should be given more attention to chlorination, as well as villages that are not covered by this company, are virtually uncertain and do not assume the responsibility of chlorination, which requires that decisions be taken as soon as possible.

Providing safe drinking water for human society is of vital importance. The purpose of this study was to determine the importance and performance of chlorination in the distribution network of drinking water in the level of utility of microbial quality and chlorination status in Tabriz and its surrounding villages.
This descriptive-analytical study, environmental and library study, and the necessary information were prepared using data collected from other articles and Tabriz Water and Wastewater Company. After analysis, it was analysed. The results of the study showed that the chlorination method used in the villages is a type of liquid chlorination or pottery method. Chlorine is injected into the liquid by pressure. The chlorine type is used as a powder or crystalline perflorester. 95.5% of the rural population of the East Azarbaijan province benefited from water utilization. Every day, various stages, such as chlorination, chlorination, sampling and testing, are carried out at the 7th level laboratory of the province, so that people will enjoy a healthy blue dream. The health center also monitors the company's performance and controls the supply of water and water entering and extinguishing, so that the water supplied is free from any pollution. Of the 127 villages of over 20 households without plumbing, plumbing 95 villages are being run in rural or rural communities. About 400 villages, 20 percent of the province's population, have water facilities but are not covered by this company. Due to the fact that in recent years, the important chlorination of rural water reservoirs has been delegated to Rural Water and Sewage Company, and perhaps the juicy juices of this company have not understood the necessity of the problem, in many villages of the country that covered this Companies should be given more attention to chlorination, as well as villages that are not covered by this company, are virtually uncertain and do not assume the responsibility of chlorination, which requires that decisions be taken as soon as possible.

Reuse of treated wastewater instead of fresh water for agricultural irrigation is far cheaper than the desalination of sea water is salty. The problem in Iran is that in many places where people are facing a shortage of fresh water can be used in the consumption of fresh water for agricultural drought stress save. Most of the organic matter in the wastewater can be treated, but the number of materials using common processes, we are not treated or treated are small, is growing. Pollutants such as azo dyes, the largest group of coloring matter in the form of textile industry, in addition to the material in various processes such as hydrolysis, oxidation and other chemical reactions to become one of the aromatic amines are carcinogenic agents. Five advanced oxidation method used for production of OH radicals, ultraviolet light use of energy and consisting of ozone/ radiation UV UV)/O3), hydrogen peroxide and radiation UV (H2O2/UV), photo-Fenton/systems like Fenton, ozone and hydrogen peroxide and radiation, UV (UV/H2O2/O3) and photocatalytic oxidation (TiO2/UV), respectively. Clear and effective methods of electrochemical techniques, which directly (Anodic oxidation), or indirectly through Fenton's reagent (electronfenton), hydroxyl radicals to produce the product. Each of these processes has advantages and disadvantages which are set according to the type and nature of the contamination, we can chose the best mechanism to eliminate. The results have shown that applying a combination of two or more methods of advanced oxidation processes for contaminant removal efficiency than by using any of them (alone).