WSEAS Transactions on Environment and Development
Print ISSN: 1790-5079, E-ISSN: 2224-3496
Volume 15, 2019
Methods for Acaricidal Solute Disinfection and Technical Means for Their Implementation
Authors: , , , , , , ,
Abstract: The remains of acaricidal substances from the solutes used in the preventive treatment of sheep against infectious diseases by bathing them in special bathtubs fall into the environment without prior disinfection. The mass of the residues is about 30% of the initial mass of the acaricides used. In environmental objects such as soil, water, plants, etc. acaricidal substances being persistent pesticides are able to persist for a long time, migrate to adjacent objects, transpose into plants, deposite in the body of productive animals, excrete in milk, egg, transmit to the fruit, thereby contaminating feed and food of plants and animals. It is possible to use common analytical expressions to determine the constant time of detoxification of acaricidal substances in environmental objects and indicators of decrease in the initial content of acaricidal substances in the form of chemical decay periods. The authors use fundamental theory of chemical kinetics. This technique allows to trace the process of. The article provides a rationale for the disinfection methods of the acaricide solute residues based on the study of acaricidal solute detoxicants and the study of sorption properties of the brown coal (types B-2 and B-3) and a natural sorbent which is the mixture of rubber crumbs with powdered carbonaceous siliceous shale. The authors identified the needs of the brown coal and the natural sorbent for the decontamination of 1 ton of acaricidal fluid waste with residual acaricide - 0.2% neocidol, which is respectively 80 kg and 40-60 kg. Rational aggregate states of sorbents are recommended within 0.5-2 mm as well as the disinfection modes: such as filtration of acaricide solutes under vacuum through the crushed layer using brown coal as a sorbent; and static mode when using natural sorbent. The authors developed the technical means for implementing these methods during the disinfection of wastewater from the sheep bathtubs, combining with the pre-treatment of the solute from mechanical impurities, purification of the solute from the residues of acaricide substances and the combustion of the used sorbents not polluting the atmosphere. The methods and devices allow to carry out the disinfection of discharges from sheep bathtubs with a high content of acaricides - 150- 300 mg/kg. The authors suggest the use of the new types of sorbents which have intense sorption properties of acaricides and a low cost as well, which are easy to prepare and to use and easy to recycle. Mobility and autonomy of the developed devices provide disinfection of the spent acaricide solutes and of the used sorbent at the locations of the sheep bathtubs.
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Pages: 356-370
WSEAS Transactions on Environment and Development, ISSN / E-ISSN: 1790-5079 / 2224-3496, Volume 15, 2019, Art. #40