This article deals with the impact of chemicals on the degree of recycle water purification, the physical and chemical coagulation process is described and the results of tests that show the effectiveness of these reagents are presented.

This article contains the most optimum temperature requirements for hydrogenation reaction by Pd- PEG/ZnO catalyst. Works of some foreign authors have been investigated due to to create catalysts for the preparation of which energy consumption will be negligible and the catalyst activity will remain the same.

This article discusses the evaluation of the effectiveness of disinfectants «Dezosteril» and its derivatives and analogues in the fight against tuberculosis. The emergence of tuberculosis and its pathogens. Namely, «to Dezosteril» and its derivatives produced on the territory of «BO-NA» of Pavlodar city. The main attention is paid to the types and methods of disinfection. Resistance of microorganisms to chemical disinfectants based on peracetic acid (NUK) and hydrogen peroxide.

At the present stage of scientific and technological progress and rapid development of industrial production, the problem of environmental protection is becoming a problem. Air pollution has a serious impact on human health, global and regional climatic conditions. The main types of pollutants are gaseous substances. When fuel burns, carbon monoxide is released during traffic. This is a very toxic gas. Blood easily interacts with hemoglobin and continues to function; therefore, it is important to reduce emissions of toxic substances by vehicles and industrial facilities.

The article is devoted to comprehensive research and development of the technology of cream supplements for the enrichment of processed cheese products. This article discusses the steady trend towards the use of dairy products with probiotic properties in the diet of modern people. The authors justify the requirements for the chemical composition and properties of a new type of processed cheese product: the mass fraction of dry processed cheese product must be at least 45 wt.%, the amount of probiotic microflora at least 107 CFU/g, to adjust the fatty acid composition of the product, the use of milk fat substitutes. As a result of the research, the composition and technological parameters of the production of a cream Supplement intended for enriching a new processed cheese product were determined. Skimmed milk powder concentrate with a mass fraction of dry substances (48.0±0.5) %was selected to increase protein (nitrogenous substances) in the nutrient medium for microorganisms. To activate the growth of bifidobacteria, the prebiotic No. 1 – lactulose was studied. The main content of the study is the analysis of the effect of increasing the amount of SOM concentrate on the chemical composition of the compositions of experimental products. The bacterial concentrates Bifilact-B and Bifilact-u were selected as the source of probiotic cultures. In fermented products, microbiological indicators were determined: the total number of lactic acid cultures and bifidobacteria. The article analyzes the dynamics of acidity of experimental products fermented with bifilact-B bacterial concentrate and bifilact-u bacterial concentrate. It was found that in experimental products with a high level of acid formation, the growth of bifidobacteria decreases, this is due to the fact that at low pH values, the growth of bifidobacteria slows down, and at a pH below 4.5 – stops. There was a significant increase in the number of bifidobacteria in the presence of a prebiotic – lactulose concentrate. The authors proved that the fermentation process with the formation of a clot in experimental products with bifilact-B bacterial concentrate is completed within 9-10 hours, taking into account the time of compaction of the consistency. In experimental products fermented with bifilact-U bacterial concentrate, the fermentation process ends within 7-8 hours, that is, by (2.0±0.5) hours faster.

Main problem: Presence of acidic chemicals such as carbon dioxide and hydrogen sulphide, composition of production fluids triggers corrosion. Corrosion in oil and gas industry leads to deterioration of equipment since most of equipment is made of metal alloys. Application of inhibitors is one of the corrosion mitigation methods that needs to be controlled because it is important to identify optimal concentration of the chemicals in production fluids.Residual chemical analysis plays an important rolein identifying the appropriate dosage of corrosion inhibitors and its correction. It is imperative to find the most optimal concentration of amines due to the fact that both overdose and underdose could lead to equipment deterioration. The chemical analysis is hindered by complexity of mixtures that are applied in petroleum industry. Purpose: The main purpose of this article is to find out the most effective method of residual chemical analysis for inhibitors used against sweet and sour corrosion by studying and analyzing corresponding literature review. The analysis should be carried out with robust, sensitive, and accurate instrumentation. Methods :Theoretical study of composition and mechanism of amines used in oil and gas industry as corrosion inhibitors and selection of appropriate instrumental analytical techniques for the residual analysis. Results and their importance: After careful studying and consideration of modern instrumental analytical techniques the most optimal and efficient method in terms of robustness, time saving and cost was selected. Ion chromatography is an adequate method to carry out residual chemical analysis for amines that are used as inhibitors in oil and gas industry to prevent sweet and sour corrosion.

One of the agent modern tasks is to ensure the cleanliness of the air basin. To ensure this, it is necessary to clean the combustion products of the fuel removed from the boilers after their cooling into the atmosphere from harmful substances, including nitrogen oxide.

The article is devoted to the development of a technology for obtaining organic fertilizers from poultry waste based on biocatalytic processes. Currently, many poultry farms have become sources of environmental pollution, thereby causing serious environmental problems and economic and social damage. The problem of reliable protection of the natural environment from pollution by bird droppings is currently relevant. In the area of operation of large poultry farms, air pollution by microorganisms, dust, foul-smelling organic compounds, which are decomposition products of organic waste, as well as nitrogen, sulfur, and carbon oxides, is possible. Bird droppings contain acids, nitrogen, phosphorus and potassium, heavy metals. The content of nitrogen, phosphorus and potassium changes dramatically depending on the quantity and quality of the feed. Humic substances isolated from brown coal have a sufficiently high sorption activity and are used as cheap sorbents for solving a number of environmental problems in industry. These studies are aimed at minimizing the main disadvantage of the anaerobic digestion process, the low reaction rate, which leads to the need to create large-volume bioreactors. On the basis of the research carried out, a technology has been developed for obtaining organic fertilizers from poultry waste by the method of anaerobic fermentation of chicken manure with humidity at a temperature of 27 °C - 50 °C with the addition of sodium humate. The resulting fertilizer is intended for use in agricultural production, horticulture, floriculture, forestry, municipalities, in household plots in order to increase the yield and quality of crop production. For the developed technology, an application has been submitted for obtaining a Patent for the invention of the Republic of Kazakhstan «Method for producing organic fertilizers» (priority No. 2021-22818, dated July 13, 2021). The invention allows to significantly reduce the time of fermentation, to enrich the product with organic and mineral products contained in sodium humate, to convert the salts of heavy metals into an insoluble state, to improve the environmental friendliness of the method.

Main problem: Bird droppings and animal manure contain acids, nitrogen, phosphorus and potassium, heavy metals. The content of nitrogen, phosphorus and potassium changes dramatically depending on the quantity and quality of the feed. Purpose: To study the effectiveness of the use of organomineral fertilizer from poultry waste, obtained using biocatalytic processes on the growth and development of plants. Methods: An application for a Patent for the invention of the Republic of Kazakhstan "Method of obtaining organic fertilizer" has been submitted for the developed technology for obtaining organic-mineral fertilizer. In the soil intended for growing seedlings of tomatoes of the “Pepper-shaped Orange” variety and peppers of the “Bogatyr” variety, the resulting fertilizer was applied in the amount of 1 kg per 1 m2 of soil, which was dug to a depth of 8-10 cm and used to grow seedlings in closed ground and subsequent for planting it in open ground. Soil without fertilization was used as a control. The process of soil preparation for open ground, intended for planting seedlings, was carried out for the experimental field with the introduction and control without fertilization. Experimental and control studies were carried out under equivalent climatic conditions, the scheme and technology of watering plants. In total, 100 bushes of each plant species were used in the experiment. Results and their significance: The use of the obtained organomineral fertilizer allows to increase the yield of vegetable crops (tomatoes, peppers) by 20-25% compared to the control. In addition, in the experimental samples, an increase in the number of fruits on a bush was noted with an increase in their size, a decrease in the growing season and the number of damaged fruits.

The article is devoted to the study of the reaction of hydromentoxycarbonylation of isobutylene in the presence of palladium phosphine complexes in order to optimize the method of obtaining menthyl ether of isovaleric acid, which is the main component of the drug «Validol». The purpose of the article is to improve the methods of obtaining menthyl ether of isovaleric acid (the main active component of the drug "Validol") and to study the reaction of hudromentoxycarbonylation with l-menthol and carbon monoxide of isobutylene in the presence of homogeneous catalytic systems based on palladium phosphine complexes. The article presents studies on the content of validol from various types of raw materials by the method of GC analysis. In the commercial samples of validol obtained from natural l-menthol and industrial isovaleric acid (obtained as a result of the oxidation of "fermentation isoamyl alcohol"), there are 2 components (l-menthyl ether of l-menthol and isovaleric acid), additionally 2 % menthene hydrocarbon and 23 % L-menthyl ether of methyl ethylacetic acid. A probabilistic mechanism of the reaction of the hydromentoxycarbonylation of isobutylene with l-menthol and with carbon monoxide and in the presence of catalytic systems based on the studied palladium phosphine complexes is proposed.