Articles

Ivan Tikhonov The article provides author’s reasoning about the organization of the chemistry of a touchfree car wash. First, you need to understand what water quality is really required for the technical needs of a car wash. What impurities in the water can be the cause of poor-quality car washing and how does the chemical […]

Ivan Tikhonov The article presents a technique for removing boron from water using the technology of reverse osmosis water desalination. The calculation of two schemes was performed in the ROSA 9.0 program. The first scheme assumes minimal capital investment in a water treatment plant. The second scheme is characterized by the minimum amount of generated […]

Ivan Tikhonov Guidelines for maintaining the water-chemical mode of steam boilers prescribe continuous blowdown of boilers based on dry residue or salt content. For example, RTM 108.030.114-77 (Stationary steam boilers of low and medium pressure. Organization of a water-chemical mode) gives the following formula for calculating the percentage of continuous blowdown based on the boiler […]

Ivan Tikhonov The article discusses the main methods of water purification for drinking and household needs. Household centralized and decentralized water supply networks are accepted as a source of water supply.  Recommendations on the selection of water treatment equipment and materials are given. It is no secret that the drinking water that enters our home […]

If you have a water softener at home or you have to work with Na-softener, and it is not possible to make a chemical analysis for hardness, then there is an easy way to find out whether the softener installation functions properly. To do this, it is necessary to measure the electrical conductivity of the […]

Ivan Tikhonov The article deals with the problem of operational control of the process of ion water softening. The dependence of the electrical conductivity of water on its hardness value for the water softening process is presented. The article presents a control system for the water softening installation based on programmable relay. The results of […]

Ivan Tikhonov Annotation This article discusses the existence of various forms of carbon dioxide in water. The importance of measuring the pH value in determining the ratios of bicarbonates, carbonates and hydrates is shown. The article presents a method for calculating the pH value of water depending on the ratio of various forms of carbon […]

Ivan Tikhonov The article presents a method for calculating the pH value, which corresponds to the saturation of water by calcium carbonate and compares this pH value with the pH value obtained by calculating with Langelier saturation index and Stiff & Davis index. Corrosion and scale formation are the main problems in the usage of […]

Ivan Tikhonov In the design and operation of low-pressure steam boilers there is a number of significant difficulties in the organization of water-chemical mode (WCM) of their work. Water-chemical mode (WCM) of operation of a steam boiler should ensure trouble-free and cost-effective operation of the equipment and pipelines of the boiler. WCM of a boiler […]

Tikhonov I.A. The presence of dissolved corrosive gases CO2 and O2 in water causes corrosion of equipment and pipelines. As the water temperature increases, the mobility of oxygen molecules increases, and the corrosive aggressiveness of water increases. The problem of removing oxygen and carbon dioxide from water is solved mainly in two ways. It is […]