Improvement of the Quality of the Human Environment by Transporting and Stabilizing Sewage Sludge for Further Processing

Abstract

There are many threats to the quality of human life in the environment of the modern world. Among them, one can single out the growing pollution of the environment and water resources, which leads to crop failures, hunger, and disease. Concomitantly, narrowly targeted measures often lead to an aggravation of the situation as a whole. For example, an attempt to solve the problem of yield quality deterioration by increasing the use of synthetic fertilizers leads to accelerated destruction of the fertile layer due to the irreversible loss of organic matter. It is proposed to use complex technology, including standard dewatering of sewage sludge at wastewater treatment plants, transportation, disinfection, and processing into a highly effective organic fertilizer. This paper deals with the problems of transportation of a viscous, epidemically dangerous, biologically aggressive substance for its further processing. To improve the quality of working conditions directly at treatment facilities to protect the environment, human health and counteract the emergence of epidemics, it is necessary to develop sealed systems for safe sludge transportation, maximally isolated from the environmentwith taking into account many variables, such as environmental temperature, intern biological processes, various tribometric, rheological and thermophysical properties. Upon the laboratory studies and bench tests, the main affected factors were identified. Fundamental design solutions for transporting substances with rheological characteristics of the sludge below 80% humidity level are proposed. Research has been carried out to decontaminate the substance during its transportation.

Disinfection of Dehydrated and Non-Dehydrated Domestic Sewage Sludge in Sustainable Development

“…To increase the efficiency of reducing the energy intensity of the process of obtaining fertilizer, as an alternative to the method of thermal disinfection described above, the possibility of using the cavitation-acoustic method for treating domestic sewage sludge is considered. Based on the preliminary studies [Vaysman et al, 2022], a conclusion was made about the fundamental As an additional disinfecting effect, an electric pulse treatment of a suspension of domestic sewage sludge is recommended. Given the release of a large amount of energy in the process of hydrodynamic action in combination with electropulse processing will accelerate the transfer of the organic component of the resulting fertilizer into easily digestible products that are available to plants and do not inhibit their development in the process of using these fertilizers.…”

Reducing the negative impact of accidents associated with the release of dangerous substances to environment

“…A significant deal of attention is therefore necessary to be given to the reaction to the escape of dangerous substances during accidents. Some authors point to the negative impact of dangerous substance leakage on the environment and to the need for a reaction to possible accidents (19,63).…”

Recycling of Municipal Sewage Sludge in Sustainable Logistics Systems

“…MSS can be used to obtain fodder protein and feed additives, compost and vermicompost. The production of feed protein and feed additives occurs under the influence of special microorganisms [23]. This process has not found wide application due to its specificity.…”