Overview of modern methods of treatment and disposal of sewage sludge

This article provides a brief overview of current methods for the treatment and disposal of sewage sludge, such as soil application, landfill, incineration and anaerobic digestion. Municipal sewage sludge is an acute problem in both developed and developing countries. Researchers are conducting many experiments to solve this problem. They are many methods of disposal, neutralization or reuse of sediments after neutralization. The review of methods in this article will provide more information and further make the most appropriate and cost-effective choice for the use of sewage sludge

Overview of modern methods of treatment and disposal of sewage sludge

This article provides a brief overview of current methods for the treatment and disposal of sewage sludge, such as soil application, landfill, incineration and anaerobic digestion. Municipal sewage sludge is an acute problem in both developed and developing countries. Researchers are conducting many experiments to solve this problem. They are many methods of disposal, neutralization or reuse of sediments after neutralization. The review of methods in this article will provide more information and further make the most appropriate and cost-effective choice for the use of sewage sludge

Intensification of the Wastewater Treatment Process of a Bitumen Plant with the Production of Recycled Water

The increasing demand for water with the industrialisation of the world is becoming a major problem as there is a water shortage all over the earth. Therefore, the water problem is one of the important problems that need to be effectively solved. This paper presents the results of research on wastewater treatment of bitumen production in the Mangystau region, which after physical and chemical treatment methods is sent to natural evaporation fields. As a result of research work, a method of wastewater treatment of bitumen plant was developed, which includes two stages: distillation of water on the solar plant and ozonation in order to oxidize volatile organic matter. Distillation to obtain primary treated water of 70–75% volume was carried out at 33–37 °C ambient temperature and 15–30 kPa rarefaction, at the same time COD of water was reduced by 68%

The Influence of Abiotic Factors on Organisms-Hydrobionts of Activated Sludge

Rational use of water resources is one of the urgent problems for arid regions of Kazakhstan. The biocenosis of activated sludge of urban sewage treatment plants in Zhanaozen periodically encounters stressful situations associated with violation of the operating mode of equipment or emergency discharges of toxicants into the sewage treatment plant system. It has been established that with sharp fluctuations in the physicochemical parameters of aqueous solutions, protozoal organisms are primarily eliminated from the composition of activated sludge. This pattern was noted with an increase in the content of ammonium nitrogen, phosphorus, monoethanolamine and pH fluctuations in wastewater. Under the conditions of a 10-month period of active insolation in Western Kazakhstan, the species diversity of the algoflora of activated sludge correlates with the duration of daylight hours, while it was found that diatoms predominate in the autumn-winter period of the year, blue-green and green algae predominate in the spring-summer period