If you need full access to the book, please write an email to the Publisher. Your request will be redirected to the author. If s/he is interested, s/he will directly contact you using the email address you have specified to discuss the conditions for obtaining access without the intermediary of the Publisher. The textbook addresses the contemporary problems of environmental pollution by gaseous emissions of industrial origin. Existing methods of purification and deodorization of emissions using the processes of biological degradation of organic and inorganic pollutants in modern gas purifiers are analyzed: biofilters and bio-scrubbers. Recommendations on the selection and calculation of gas purification equipment using biological methods are given. It is designed for graduate students and students of higher educational establishments, teachers and research associates, as well as specialists involved in environmental protection.