IDEA #4WOK8F Water Purification By A Combined Action Of Ozone And High-Energy Electron Beam

APPLIED RESEARCH • WATERPOLUTION PREVENTION WATER PURIFICATION BBYY AA COMBINED ACTION OOFF OZONE AND HIGH(cid:2)(cid:2)ENERGY Description ELECTRON BEAM a) One of the possible alternatives to chemical disinfection is electron beam irradiation applied simultaneously with ozone. Electron beam irradiates water with a beam of high(cid:2)energy electrons, causing the formation of transient reactive species: aqueous electrons, hydroxyl radicals and hydrogen radicals. The cell membranes of the microorganisms are destroyed due to synergistic effects, making the treatment more effective. The fundamental investigations have proved that the beam(cid:2) ozone techniques elaborated are very prospective for the water purification from injurious bacteria, pathogenic viruses, medicines and chemical compounds. In natural water samples, this factor is brought down to the standards stipulated for drinking water. In addition, (30(cid:2)50)% of organic compounds can be split by these techniques. Up to 40% of oil products become destroyed. Inorganic compounds (nitrites) are decomposed by 85% (to compare with their start(cid:2) ing content). The total destruction of antibiotics is achievable. As it is proved, the regimes optimal for the water processing depend on the degree of bacterial and chemical contamina(cid:2) tion as well as on the temperature of water and its pH(cid:2)index. This technique of water disinfection causes temporal changes in biological characteristics of the residual microflora that still has remained viable after processing with the beam and ozone. Changes in sanitary(cid:2)model microbes’ characteristics indicate themselves via deterioration of sensitivity to many antimicrobial medicines, the persistent potential lowering down and a steep decrease in toxin(cid:2)generating bacteria’ abili(cid:2) ty to produce exotoxin. A new technique of the water disinfection is also developed, where copper ions are added to the water processing with the beam and ozone. Copper ions synenergetically intensify the oxidizer antimicrobial effect more than 10 times. A new barri(cid:2) er(cid:2)free ozonizer “OzWW 4/2� is also proposed. In this device, ozone is synthesized due to the pulse glow discharge in the oxygen atmosphere. The ozonizer generates an ozone(cid:2)oxygen mixture where the ozone concentration is high (>3%). The ozonizer mode of operation is very stable, the maintainability of this device being high. The plasma(cid:2)chemical reactor of ozone synthesis consumes the energy about (6(cid:2)8) W*hour 1 g of ozone during one hour, which corresponds to the best world achievements. Two accelerators were used: resonance accel(cid:2) erator (the energy is (3(cid:2)4) MeV and the linear inductive accel(cid:2) erator (LINAC) that provides the electron energy up to 2 MeV. Innovative Aspect and Main Advantages It was determined that the combined action of electron beam and ozone 10 time more efficient for the water purification from injurious bacteria, pathogenic viruses, medicines and chemical compounds. The accelerator and ozonizer joint application, requiring low energy consumption, permits dimin(cid:2) ishing the sanitary(cid:2)model microflora concentration in sewages down to national standards. Areas ooff Application Disinfection of sewages from medical, the industrial and domestic water suppliers 112 b) Fig.1 The general view of LINAC (a), and the beam extraction windows (b) (cid:2) “1� is the window made of CCCM; “2� is the extraction window mounting. Fig. 2 Glow discharge ozonizer OzWW 4/2 Stage ooff Development Laboratory prototypes are available Contact Details Contact person: Kornilov Eugeniy National Scientific Center Kharkov Institute of Physics & Technology Address: 1 Akademicheskaya St., Kharkov, 61108, Ukraine Tel/Fax: +380 57(cid:2)700(cid:2)15(cid:2)23 E(cid:2)mail: kornilov@kipt.kharkov.ua