Vibrocavitator for Water Disinfection of Opened Reservoirs

Abstract

Наведено опис конструктивної будови автономного вібраційного кавітатора для аерації води відкритих водойм та інактивації її біологічних забруднень, зокрема і ціанобактеріями, які провокують "цвітіння" води. Його основними елементами є встановлена на пневмобалоні платформа із віброкавітатором та пневмокамерою і занурені у воду збурювачі кавітації. Продуктивність очищення забрудненої води -10÷150 м 2 водного плеса мілководдя за 8÷10 годин роботи від автономного джерела живлення. Пристрій високопродуктивний, маневрений, придатний для ефективної боротьби із заморами риби у відкритих біологічно забруднених, зокрема і цитобактеріями, водоймах, не залежний від стаціонарних джерел живлення.Ключові слова: вода, біологічне забруднення, кавітація, електромагніт, пневмобалон, платформа. 1 доц. Л.І. Шевчук, д-р техн. наук -НУ "Львівська політехніка"; 2 асист. О.І. Строган, канд. техн. наук -НУ "Львівська політехніка"; 3 асист. І.З. Коваль, канд. техн. наук -НУ "Львівська політехніка"; 4 аспір. Т.С. Фалик -НУ "Львівська політехніка" Науковий вісник НЛТУ України. -2016. -Вип. 26.4 2. Екологія та довкілля Shevchuk L.I., Strogan О.І., Koval I.Z., Falyk T.S. Vibrocavitator for Water Disinfection of Opened ReservoirsThe description of the constructive structure of autonomous vibratory cavitator for water aeration of reservoirs and inactivation of its biological contaminants, including cyanobacteria, which cause water blooms has been presented. Its main elements are the platform mounted on an air cylinder with vibrocavitator and air chamber, and cavitation breaker immersed into the water. The productivity cleaning of contaminated water is 100÷150 m 2 of shallow stretch of the water for 8÷10 hours of autonomous power source. The device is considered to be high-performance, manevrenen, and suitable for effectively combating fish kills in open biologically contaminated, including Citrobacter, reservoirs, independent of stationary power sources.

The Effectiveness of Food Industry Wastewater Treatment by Means of Different Kinds of Cavitation Generators

“…It leads to uneven force action over the liquid and in case of increase in the volume of the liquid under the treatment, requires the power improvement and amount of electrical discharges, which lead to increased energy consumption for the processing operation. Besides, the creation of the powerful shock waves throughout the liquid volume requires the strengthening of the working chamber of the unit [11,12].…”

“…The shock waves are generated on the small territory around each cavitation cavern [12]. It provides the uniformity of the force influence over the liquid and the absence of load impact on the wall of the working chamber of the unit.…”

“…Besides, the passing of ultrasound through the liquid is related to the great losses of energy of the acoustic waves. Some of the indicated problems are solved in the conventional ultrasonic apparatuses [11], where not all the liquid is being processed at once, but only its part that flows through the working area of the apparatus, which allows avoiding great consumption for the ultrasound radiation [12].…”

“…Hereby the cavitation nuclei of different sizes are grasped, which intensifies the development of hydrodynamic cavitation and the process of the liquid treatment in comparison with ultrasonic method. In order to intensify the industrial technologies, the most applicable are all kinds of hydrodynamic cavitation, which allows processing of the big amount of liquid in a flow [11,12]. Hydrodynamic cavitation may be carried out in the apparatuses of different kinds of construction and by means of different methods.…”

“…The equipment that the cavitation effects are used in, has the following advantages: increased productiveness of the processes due to high carrying capacity, increased level of the products quality due to high dispersibility of the particles, increased resistance and uniformity of the system, decrease of the unit costs of energy for the processing due to the local concentration of efforts, provision of the universality of application. In this particular case, a gas cavern serves as the energy transformer, which is being introduced and the object of influence [11,12]. In case of intense broadening, compression or pulsation of caverns under the influence of the external pressure which is periodically changed, the carrying processes are activated both on the micro-level, throughout a separate cavern and on the macro-level, for the whole volume, in consequence of a turbulence transition of the interphase surface.…”