One of the actual problems of the phosphoric industry is complex usage of all got raw materials and processing of technogenic waste with receiving products. One of the main waste of phosphoric production are the phosphorus-containing sludges which are formed on stages of condensation of vaporous phosphorus. Despite numerous researches on suppression and processing of phosphoric sludges, today the universal way of their processing meeting the requirements of phosphorus production isn't found yet. In this regard, we offer a sorption method of phosphorus release from phosphorus-containing sludges. Various alumosilicate minerals, including bentonites, vermiculites, refractory clays, etc. can act as sorbents. The specified minerals possess high sorption ability with an advanced surface. Results of thermodynamic researches of heterogeneous system phosphorus -water -solid mineral impurity are given. The thermodynamic probability of the main of reaction and systems characteristic for sorption process of phosphorus release from sludges is shown. For modifying the surface of minerals of the montmorillonite group entering into bentonites and vermiculites acid activation is used. For increase in hydrophilic surface of minerals are considered exchange cations of Al +3 , H + , Na + . It is shown that hydrophilic materials can be received at normal saturation by exchange cations. At its supersaturate hydrophily can reach initial (before processing) values.

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The situation is taken as the basis of the research. It is seen that the biological local study is aimed and designed on the students' application of development technology. The study was designed in the fall term of 2022–2023 and was prepared with 148 participants. The participant groups that made up the study were given training on the problem situation of the research. The main purpose is to help participants develop ‘Technology’ ‘Biological local’ topics and to further their education. Each data and value obtained according to the training of the study was made by frequency analysis, t-test, using the utility program, and the results were written into the research in the presence of tables. As a result of the research, it was concluded that the participant groups easily used development technologies in biological local studies and the application that came with this idea was formed. Keywords: Biological, distance education, development technologies, primary school students;

Wastewater pollution with detergents is one of the environmental problems associated with the rational use of water resources. The existing methods of physicochemical wastewater treatment, despite their efficiency, are open to secondary environmental pollution. Biological coagulation/flocculation methods are widely used with the plant waste. The aim of this research was the use of ferric iron obtained by means of the bacterial-chemical method and bentonite to reduce the chemical oxygen demand in the wastewater containing detergents. It was identified that the use of Fe 2 (SO 4 ) 3 obtained using the bacterial-chemical method with thionic bacteria Acidithiobacillus ferrooxidans BIT 1 and bentonite as a clay material is promising. At the same time, it was found that the highest reduction degree in the chemical oxygen demand -88.1 ± 7.9% in wastewater was noted in the variation where the bacterialchemical ferric iron in the amount of 1.75 g/L was used in combination with bentonite in the amount of 600 mg/L.

Physico-chemical studies of chemical, mineralogical and phase features of Darbaza clay and swelling agents of oil sludge have been carried out to study the multifunctional sorption properties of local bentonite clays. The contents of the mineralogical and organic part of oil sludge were determined with physicochemical studies. As a result, it was determined that paraffin-naphthenic and aromatic compounds predominate in the organic part and the compounds of silicon, calcium, aluminum and iron predominate in the mineral part. Carried out studies of the modification method of local bentonites with acidic and thermal treatment, which activate sorption properties, are due to the cation exchange of the initial elements of montmorillonite minerals.