Abstract. 1 The effect of corrosion inhibitors and microbiocides presented in circulating water supply systems on the corrosion rate of structural materials has been studied. It is shown that using the mixture of zinc phosphonates aqueous solutions, special polymeric dispersants and microbicides based on bromine and quaternary ammonium salts provides dissolution of calcium carbonate deposits and the corrosion rate of steel materials at the lowest level. Rational modes of circulating water chemical treatment are proposed, which increase operational reliability. The electrical conductivity of KU-2 resin, which will be used for intermembrane filling during electrodialysis of makeup water in a circulating water supply system has been determined to prevent the salts concentration.

The article states that the receipt of insufficiently treated wastewater into water bodies is largely caused by the use of outdated water treatment technologies, the deterioration of the technological equipment, late adjustment of the technological regime, and effective methods of removing phosphates from water in decentralized water supply. In this regard, it is necessary to implement comprehensive measures to prevent and reduce the deterioration of water quality, to develop the effective methods of removing the phosphorus-containing substances from wastewater, to conduct constant monitoring (through automated observation posts) of surface water quality with timely management decisions. The adsorption properties of granular composite materials based on glauconite were investigated The composite granular glauconite materials with sunflower husk adsorbent have been found to be most effective. The efficiency of wastewater treatment was 78%.

To minimize the impact of industrial enterprises on water objects, a wide variety of adsorbents (based on activated carbon, natural materials, nanomaterials, vegetable waste of agro-industrial complex, etc.) is used. Recently, chitin and chitosan have attracted the attention of scientists due to a number of unique physico-chemical and biological properties (adsorption, antioxidant, radioprotective, immunomodulating, lamina-forming). We have improved the method of obtaining powdered chitosan and established the basic physical and chemical parameters (bulk density, humidity). The method of obtaining chitosan granules and composite materials based on chitosan and modified sunflower husks (MSH) has been further developed by the "drip method". The adsorption properties of powder chitosan, chitosan granules and MSH were studied. It is set that a granular adsorbent has a high adsorbtivity in comparing to the original chitosan. Efficiency of wastewater treatment with the use of chitosan granules and MSH is equally high (up to 98%). The optimum amount of adsorbent for effective cleaning of contaminated water is 1% of its volume. The use of the results of the conducted research allows us to obtain an effective adsorbent for the treatment of industrial waste water.

A multi-stage method for producing an absorbent with increased absorption capacity based on agro-industrial wastes has been proposed. The method includes treatment of raw materials with sulfuric acid, mechanochemical modification, electrostatic separation, and cavitation stage. The expediency of the proposed adsorbent usage in the process of purification of contaminated water from fats, phenols, petroleum products, and heavy metal ions has been proved. The complex application of adsorbents (absorption of gaseous pollutants and wastewater purification) has been tested. Adsorption properties relative to pollutants extraction were found to be better for obtained adsorbents compared with natural absorbents and activated carbon.

Purpose. Many years of experience in the operation of landfills for solid waste has contributed to the development of a number of measures aimed at preventing their adverse effects on the environment. In the case of separate waste collection, up to 70–80 % of useful resources can be removed from their total amount. Removal of valuable components will have a positive effect on reducing the amount of waste to be disposed of, reduce the negative impact on the environment, and offset the costs of procurement of secondary raw materials. Methodology. In order to reduce the level of danger of the landfill, the problem of solid waste management in the Kremenchuk territorial community was studied. The current directions of improvement of the waste collection and utilization system are considered. To determine the components of waste that should be sorted, studies of the morphological composition of solid waste, as well as analyzed the possibilities of their processing in Ukraine. Results. A system of primary sorting and removal of useful components at the stage of waste collection is proposed. A set of technological solutions for optimizing the waste treatment system is recommended. Based on the research, it is concluded that the existing waste management system in Kremenchuk should be supplemented by separate collection of hazardous and organic waste, to introduce separate waste collection in the private sector. The proposed optimization of the waste management system will reduce the load on the landfill; reduce the negative impact on all components of the environment. It is also proposed to expand the infrastructure of the landfill by building the following facilities: a municipal center for sorting solid waste, a sorting station, a complex for composting organic waste. Originality. Thanks to the proposed integrated approach to waste management, which is a combination of mechanical separation and biological treatment of waste, it will be possible to reduce the amount of leachate and biogas, reduce the load on the landfill, and reduce the negative impact of waste on soils and groundwater. Practical value. Creating an effective waste management system will help improve the state of environmental and sanitary-epidemiological safety in the community. References 11, tables 3, figures 2.