Assessment of efficiency of the project of the construction of water wells
The article deals with the effectiveness of projects for the drilling of water wells. At present, almost all drinking water to the population of the Repub-lic of Belarus is based on groundwater sources. The main water intake structure for the capture of water are water wells. This article gives an analysis of the causes of the high cost of well construction, in particular, noted that the low technical level of design and construction of water wells is one of the causes of negative economic trends: the rising cost of construction of wells and operating costs.
Тhe role of technogenic pollution in transformation of mineral compounds of the main forest ecosystem components of Belarus
To match the level of the environmental pollution of Belarus by industrial pollutions were held bioindication researches of wood plant among 590 test points of plant patterns selections according to general European methods. The concentration of the heavy metals (Pb, Cd, Ni, Cr, Sr, Cu, Zn, Mn, Co) and the range of other chemical elements is marked on plasma spectrometer “Spektroflame” (Germany).
Regional ecological network of Vinnytsia region as basis of optimization of environment
The article is devoted the problems of forming of regional econet of the Vinnitsya region as bases of optimization of natural environment. Basic strategies are selected and the basic going is offered near its alteration.
Research of the physical and chemical processes occurring in the soil at its promerzaniye.
Study of physicochemical processes, happening in ground at its (her) freezing.The analytical analysis of results of scientific studies of physicochemical processes, happening in ground at its (her).
Purification of natural waters of pharmaceutical preparations oxidation method.
Article is devoted to research of new technologies of removal of permanent organic pollution, in particular pharmaceutical devices, from natural and sewage.
Changes in the activity of antioxidant enzymes in seedlings of lupine caused by the action of lead compounds.
The effect of different salt concentrations of lead (10-5 - 10-3M) on the growth and activity of antioxidant enzymes in seedlings of yellow lupine nar-row-leaved (Lupinus Luteus L.) cultivar "Karmavy." It is established that the effect of low concentrations of lead compounds significantly slows the growth of shoots, roots and enhances the activity of catalase and peroxidase in the first two weeks of development. It is shown that high concentrations of lead ions inhibit the growth of seedlings and stop the activity of antioxidant enzymes on the tenth day of the study. Based on the data over a high peroxidase activity in seedlings of lupine compared with catalase demonstrates the significant role of this enzyme in the oxidative mechanisms of re-sistance to the action of lupine lead.
Ecological and economic aspects of return to the silver.
The results of experimental data on the content of silver in the modern kinofotomaterialah various purposes, manufactured by leading manufactur-ing companies. The results were obtained using the method of potentiometric titration. The experimental data obtained for kinofotomaterialov used in the learning process of the St. Petersburg State University of Film and Television and will be considered at the time of silver waste after use.
Materials for the filtration of total petroleum hydrocarbons from storm water runoff.
Suspended solids and oil products are considered as the most important pollutants in the storm water. As suspended solids can be easily retained from storm water by simple sedimentation, for oil products it is usually needed to have a secondary treatment: filtration through sorbents media. The experimental research of the zeolits ability of removal of oil products from water was carried out in the laboratory of Water Supply and Management Department of Vilnius Gediminas Technical University. Two experimental models were arranged for this purpose. For experiments there were used the zeolit grain fractions of ∅ 2,5-3,0 mm; ∅ 1,5-2,0 mm; ∅ 0,63-1,0 mm size. As it seen from results of investigations, the best adsorption was reached in the filter fillings with zeolit grains of ∅ 0,63-1,0 mm size. After the reconstruction of laboratory model the investigation of synthetic sorbents as filtration material for stormwater went on. Although storm wa-ter filtration through a sorbent filter gives high treatment efficiency, it is usually impossible to ensure the right speed of storm water coming to the treat-ment facilities (it is usually too high to ensure an efficient sorption). For this reason the research and analysis of three different synthetic sorbents („Fi-broil“, „Duck“, „Reo-dry“) were performed in the laboratory under extreme conditions (filtration speed 30 m/h). According to the results of the experiment, all three sorbents have similar treatment efficiency, but “Fibroil” is suitable for filtration under 30 m/h speed 6 times longer than “Duck” and 13 times longer than “Reo-dry”.
Green manure crops – an important part of natural farming.
The paper reveals the special role and importance of green manure crops in the effective conduct of resource-saving environment-friendly agricultural and production. The data about efficiency of green manure is presented in the article.
The role of potassium in reduction of 137CS and 90SR transfer in corn production.
Presented in the article presents Experimental data about efficacy of potassium in different doses is. This technology provid high productiv-ity and reduction of 137Cs and 90Sr transfer in feed products of corn in 2.8 times on the contaminated soil. Proposed agronomic method of fertilizer application for practice of corn cultivation an the soils with enough amount of phosphorus and po-tassium and contaminated by radionuclides. This method include the introduction of 50-60 tons of manure, 120 kg ai Nitrogen (normal or slow action of urea), 90 kg ai phosphorus and 150-210 kg ai of potassium per hectare.
Analys of influence of change of pressure on physical and chemical processes of interaction of components at non-stationary modes of burning.
Influence of fluctuations of pressure on speed of chemical reaction at pulsing burning is analysed. Dependence of a relative gain of speed of reac-tion on peak value of pressure is received.
Modelling of productivity of grain and leguminous crops in the conditions of the belarusian poozerye.
The natural fluctuations of productivity of grain and leguminous cultures because of the noncontrollable natural factors are established. The models by definition of average productivity grain and leguminous of cultures on agricultural grounds Byelorussian Poozeriya for any year are developed.
Medical jet complex.
The design of a jet complex which can be used for the medical purposes is developed.
Features of Regulation of Water Consumption at the Enterprises of Machine-building Industry.
The article presents data on the valuation of water consumption at the enterprises of machine building.In the article was given rationale for the choice a notional unit of output. Water use standards for agricultural engineering enterprises was calculated. A comparison of actual and calculated volumes of water use had done.
Some ways of solar equipment evolution.
The connections between energy parameters are considered for elements of solar. It is indicated that dimension of solar heat receiver is depended from many factors. Many examples of new solar equipments and using methods are described in this article.
Features of forecasting of rare events in the fixed period.
In article the possible directions of forecasting of rare events in the fixed period are considered and the technique of forecasting of the extreme nat-ural winter phenomena is given.
Use of a laser roulette at carrying out of design these hydraulic engineering constructions around meliorative works.
Possibility of application of a laser roulette (small-sized svetodalnomer) and a traditional measured steel roulette is considered at breakdown on the district of the designed hydraulic engineering constructions and meliorative systems. The technique of carrying out of a design linear piece is given and practical recommendations are made.
Stability of Phosphatic Composite Materials in the Sulphatic Environment.
The joined influence of fosphates on the degree of washing out of calcium hydroxide in the system CaO-SiO2-Al2O3-H2O in sulphate aggressive medium was studied. Experiments showed that the degree of washing out of alkaline in the system decreases at concentrations of suphate ions 3 and 5 g per l and the ratio SO42- : PO43- = 1:2. The decrease of washing out of calcium hydroxide leads to the reduction of corrosion speed in this system.
The dependence of physic-chemical characteristics of acrylic copolymers on exploitation properties of environment-friendly road-marking paints.
Different copolymers of n-butylmethacrylates and methylmethacrylates as a filmformer for road-marking paints were investigated. Glass-transition temperature was determined by differential scanning calorimetry. It was found that the temperature was depended on heating velocity. Viscosity of polymer solutions in toluene also was determined. Investigated copolymers were used as filmformers for road marking paint. Properties of the paints are discussed in the article.
Environment-friendly acrylic materials for industrial painting of joinery.
Modern water-based paints for industrial painting of joinery are described in the article. Wood as a surface for painting has some special character-istics. The recipe of water-based acrylic emulsion paint with high anti-blocking is offered in the article. Elaborated coating has improved exploitation properties as low water absorption, high adhesion to wood surface, resistance to high and low temperatures.
Specifics of spatial distribution to territories of Belarus of the dangerous meteor-ological phenomena in a context of the analysis of surfaces of a trend.
The spatial distribution of the dangerous meteorologic phenomens on territory of Republic Belarus is estimated. The trend analysis of the danger-ous meteorologic phenomens is executed. For mapping the information is advised Kriging.
Storm drain as source of pollution of the surface water.
One of the most important environmental problems is surface water pollution. Discharges of wastewater to the water bodies leads to negative envi-ronmental effects, and even small impact provides noticeable environmental changes. Industrial and household wastewater discharges are strictly regu-lated. The biggest part of researches is concentrated on household and industrial wastewater investigation, attention to storm water form urban, rural and industrial arias investigation is negligible, although some research data proof storm water to be the main sours of water bodies pollution.
Total evaporation on territories of Belarus and its look-ahead estimations.
In article results of research of tendencies of change of total evaporation, temperatures of air, an atmospheric precipitation, deficiencies of humidity of air in territory of Belarus are presented. The statistical analysis of change of time numbers of total evaporation and the basic climatic factors is made. The look-ahead estimation of these parametres on 2020г is carried out. Values of percentage change of total evaporation for 2020 concerning 2010г are received. It is established that there is no accurate orientation of fluctuations of total evaporation. Takes place, both increase, and reduction of total evaporation by territories of Belarus. The least transformation of total evaporation will occur in May (from-7 % to 9 %), the greatest – in autumn months (from-29 % to 26 %).
Methods of the sewage treatment, containing synthetic surface-active substances.
The problem of pollution of water sources is considered by synthetic surface-active substances. The review of methods of sewage treatment con-taining synthetic surface-active substances is carried out.
Production of fuel briquettes on the basis of the precipitation of sewage of city treatment facilities.
At present there is an urgent need for disposal of sewage sludge, caused by its large accumulations in plants. The problems of making fuel bri-quettes from sewage sludge with the addition of waste from other industries.
Pilot studies of removal of organic impurity of natural waters a koagulirovaniye and catalytic oxidation with a view of technical water supply.
In article experimental researches about removal of organic impurity of river waters by coagulation and catalytic oxidation are shown.
Spectrophotometrical research of doze-ozone influence on the destruction level of dye-stuff in water solutions.
water solutions The article deals with the results of spectrophotometrical research of appropriatenesses of damage of dye-stuff of different classes. Spectra of ab-sorbing of water solutions of dye-stuff treated by various specific ozone dozes have been obtained. For the explored dye-stuff minimal ozone dozes, resulting in destruction of chromophores of dye-stuff have been fixed. Besides, the researchers have found out ozone dozes, necessary for destruction of aromatic compounds, being built due to destruction of due-stuff. Probable equations of reactions of the explored dye-stuff with ozone while their chromophores being destroyed have been adduced. It has been found out, that minimal ozone doze necessary for destruction of chromophores de-pends of a molecule in due-stuff.