An example of the calculation of the sewage treatment plant of the city . Mechanical cleaning”, written by the authors Ivanov and Mishukov, is a unique and valuable resource for specialists in the field of water supply and sanitation, as well as for students and graduate students studying environmental and engineering sciences . This edition immerses the reader in the complex but extremely important world of wastewater treatment, revealing all the intricacies and nuances of the design of wastewater treatment plants. The book focuses on the process of mechanical wastewater treatment, which is the first and important step in the treatment system. The authors describe in detail the various methods and technologies used to remove particulate matter, sand and other pollutants from wastewater. The reader will be able to learn about the principles of operation of various types of equipment, such as gratings, sumps and mechanical filters, as well as their effectiveness and applicability in various conditions. The book not only provides theoretical knowledge, but also includes practical examples of calculations, which makes the material accessible and understandable even for those who are just starting their way in this field. The authors share their experience and knowledge, which allows readers to better understand how to design wastewater treatment plants, taking into account the characteristics of a particular region and the needs of the population. This work will be of interest not only to professional engineers and environmentalists, but also to students of technical universities who seek to deepen their knowledge in the field of wastewater treatment. It can also attract the attention of urban planners and environmentalists working on projects to improve urban infrastructure and protect the environment. The book will become an indispensable assistant for all those interested in sustainable development and ecology. The topics raised in the book are highly relevant in light of contemporary environmental challenges. With a growing population and increasing pressure on wastewater systems, effective wastewater treatment is becoming not just a necessity, but a matter of public health and ecosystem preservation. The authors emphasize the importance of mechanical treatment as a first step in the process of integrated wastewater treatment, which minimizes the negative impact on the environment. The writing style of Ivanov and Mishukov is clear and accessible, which makes complex technical aspects understandable to a wide audience. Their previous work was also marked by a high level of professionalism and practical orientation, which makes them authorities in the field of wastewater treatment plant design. Readers familiar with other authors' publications will be able to appreciate the consistency and depth of their analysis, as well as attention to detail. An example of the calculation of the sewage treatment plant of the city . Mechanical cleaning” is not just a training manual, but a real find for everyone who seeks to contribute to solving pressing environmental problems. It inspires new ideas and approaches to the design of wastewater treatment plants, emphasizing the importance of integrating modern technologies and sustainable practices into urban planning. If you are looking for a deep and practical guide to mechanical wastewater treatment, this publication will be your reliable companion in the world of engineering and ecology.