ENGINEERING SOLUTIONS
There were considered directions for development of industrial complexes on chlorine, caustic soda and polyvinylchloride production, from the viewpoint impact on environment. There were analyzed different options for pre-consumer waste recovery. There was showed that modern processes of table salt's electro membrane process, vinylchloride production by means of balanced schedule as well as suspended and emulsion polyvinylchloride production are defined by minimal level of harmful emissions into environment/.On the base of information on use and recovery of polyvinylchloride, showed that use of materials and articles on the ground of polyvinylchloride is entirely harmless.
Performance reliability of power installations (PIs) and production machines (PMs) to a great extent depends on developing and application of environmentally compatible high efficiency piping systems. Pressure fluctuations during heating medium supply (oil and gas) in pipeline, occurring when operated at PIs and PMs, are the source of severe vibration and could exert pipelines and installations breakage, and oil leaking because of incomplete containment of pipe connections could lead to fire and explosion hazards and emergencies with drastic consequences. In order to avoid alarm conditions, there needs have the engineering tools for pressure leveling in piping systems, for example damper of pressure fluctuations, means, providing containment of pipe connections. For avoiding of pipelines breakage, increase of environmental safety and maintenance reliability of piping systems there were offered developed and tested designs of devices: pipeline connection and effective damper of pressure fluctuations. There were outlined accomplished technical results.
COVER STORY: DISPOSAL OF OIL-CONTAMINATED WASTE. THE PROBLEM OF LANDFILL OF SOLID MUNICIPAL WASTE
Selection problem of environmentally sound method for oil-contaminated waste treatment is one of key issues for the Russian Oil and Gas Companies. There were considered inherent for gas transportation system wastes, i.e. waste of gas condensate, for which rationale will be thermal methods of treatment, and this approach, at present used at the most enterprises. For selection of methods and regimes of thermal treatment important significance has not only percentage content of oil-contaminated wastes, but as well as original composition of organic part of gas condensate waste, thermal effects which are observed during ther-mal decomposition of wastes in controlled atmosphere, and the composition of residue wastes. The purpose of this article is related to offering of thermal study of gas condensate wastes' samples, collected at different facilities of gas transportation system.
There were received empirical data about oil-contaminated soils (OCS) bioremediation' evaluation, dynamics of the oil hydrocarbons' biodestruction on the base of conducted field and laboratory investigations of OCS' bioremediation process. Investigations were carrying out on the open process areas, disposed on the Perm Kray territory, and at bioreactors of different design. There were evaluated empirical data on effectiveness of OCS bioremediation, and dynamics of the oil hydrocarbons' biodestruction. There were examined alterations of microbiocenosis in the context of soddy podzolic soil contaminated by the oil hydrocarbons during the bioremediation process. There was offered flow diagram of OCS bioremediation with the use of bioreactor. There was investigated biodestruction process at bioreactors of different types. The application of bioreactor technique has usefulness for Russia regions, where are difficult conditions for bioremediation carrying out on the open process areas because of unfavorable natural and climatic conditions. The application of bioreactor technology allows carrying out OCS bioremediation independent from environment conditions during all the year.
In many cases there is need forecast possible variations of SMW' volume (mass) and resource potential projected for 5-10 and more years, for planning of measures on SMW development. There were introduced analysis of rate of accumulation's variation, composition, and properties of SMW for last 10-15 years. There was established legitimacy of rate of accumulation's variation for SMW on the base of regression analysis (on the average there is increase of these rate annually by 1, 5 per cents). Aside from that, there was observed variation of SMW morphological composition: there is increase of plastics waste by 6,4 per cents, paper stock by 6,8 per cents, glass by 3,0 per cents annually, and food waste content decreased by 5,9 per cents in relation to values of preceding year. Plotting of trend lines on the base of known rate of accumulation could be used for forecast of volume (mass) generated SMW and its composition for a term of 5 years.
There were considered management problems of flow and quality of filtrated waters (FW) from solid municipal waste (SMW) landfills, taking into account stages of land-fill's life cycle. There were presented results of field observations and experimental analysis on FW volume's reduction and abatement of pollutants' content in FW for receiving into municipal sewerage system by means of usage of developed technical measures on gain of performance of landfills management in the absence local purifications plants. Presented technical measures allow considerably reduce costs for FW purification as well as reduce negative impact of FW on hydrosphere objects.
Up to the present in Russia more than 90 per cents of solid municipal waste (SMW) are disposed on dump piles and landfills. By so doing the most part of waste disposal facilities does not compiled by environmental requirements. There were presented the main phases of transition from unauthorized dump piles to modern landfill-sites. On the base of long experience of environment protection's department of Perm National Research Polytechnic University (PNRPU) during development of waste treatment schemes and design of landfill-sites. There were give recommendations on arrangement of safe operation for waste disposal facilities. There was noted, that along with decision of organizational and technical issues it is essential advancement of legislative base of Russian Federation in the field of waste management.
SCIENTIFIC DEVELOPMENTS
The main goal of this work was implementation of high efficiency adsorption plant for recovery of different compounds with nondurable payout. There was offered technique on the base of application of adsorbent on the ground of polyvinylchloride (PVC). Application of PVC as adsorbent is nonconventional field of it appli-
cation. There was showed application of adsorbent on the base of PVC, which has porous nanoscale structure, for recovery of organic compounds (hydrocarbons, esters, aromatic compounds, chlorinated organics) from gas emissions. There was detected criterion of interaction of PVC with recovered organic compounds. The main advantages of adsorbent on the base of PVC in comparison with activated carbon are: incombustibility, absence of adsorbent's grains breakage in the course of maintenance, adsorption little to no heat liberation and temperature increasing, desorption under vacuum. By doing so, adsorbent has persistence to acids and alkali action. Adsorption process could be carrying out under environmental temperature, desorption is carrying out under rough vacuum (at least equalto 0, 2 atm) without vapor application. Technology is used during 15-20 years at two large enterprises of Russia for vinyl chloride recovery without adsorbent replacement. There was showed possibility for creation of high effective units for gas emissions treatment from petrol vapors.
For the first time used modern effective method, i.e. X-ray Electron Spectroscopy (XRES) for investigation of thermal stability, mechanism of thermal destruction of salting inhibitors. There was used electron spectrometer with magnetic focusing, with possibility of temperature impact on test specimen in situ. For detection
of inhibitor's thermal stability and characteristic temperature points of onset and end of destruction was used spectrum of core electrons CIx. For each specimen's temperature value determined spectrum contrast Rk as relative elevation of intensity in maximum of spectrum line Imax over phone IG on Shirley, and plotted a graph of dependence of spectrum contrast CIs on temperature. Temperature of destruction's onset was determined as abscissa of point of tangent's interception to graph at low temperatures: coincidently determined temperature of the destruction's end as tangent to graph in the field of steady-state value of contrast range at high temperatures. Variation of inhibitors' chemical structure and reaction path of it thermal destruction controlled by variation of chemical shift for spectrum of core electrons. There was carrying out comparison of thermal stability of seven commercially available in Russia and abroad salting and corrosion inhibitors, and for inhibitors OPTION-585 and EKTOSCALE-450 and EKTOSCALE-605 was studied mechanism of its thermal destruction. The maximum temperature of destruction has salting and corrosion inhibitor EKTOSCALE-450.
ANALYSIS. METHODS. PROGNOSIS
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