scholarly journals Composition and Salinity Tolerance of Aquatic Oligochaetes （Annelida, Clitellata） Contributing to Reduce Salty Organic Waste in the Plum Processing Plant

2021 ◽  
Vol 57 (2) ◽  
pp. 23-33
Author(s):  
AKIFUMI OHTAKA ◽  
TAKAAKI TORII ◽  
TOMOHIRO AKAGI ◽  
YOSHINOBU YAMAGIWA
Keyword(s):  
Salinity Tolerance ◽  
Organic Waste ◽  
Processing Plant ◽  
Aquatic Oligochaetes

Research and Development of Mathematical Models of Elements of a Gas-Air Flow for Improvement of Automatic Control System of Organic Waste Processing Plant

2020 ◽  
Vol 21 (10) ◽  
pp. 575-583
Author(s):  
S. R. Shakirov ◽  
A. G. Kvashnin ◽  
A. V. Pisarev
Keyword(s):  
Mathematical Models ◽  
Combustion Chamber ◽  
Gas Flow ◽  
Organic Waste ◽  
Air Flow ◽  
Flow Path ◽  
Organic Wastes ◽  
Flue Gases ◽  
Processing Plant ◽  
Waste Processing

Recycling of organic wastes is an extremely important and challenging environmental task. One of the promising trends in this field is the creation of multi-mode (combustion, pyrolysis and gasification) plants for processing organic wastes with production of such useful products as thermal energy and energy carriers (biocoal, bio-oil, pyrolysis resins, synthesis gas, etc.) and fertilizers. When creating such plants, the main problems include instability of the properties of a source material, its high water and ash content. This drives the developers to use non-standard equipment and atypical control algorithms, the creating of which requires a lot of experimental work to be done. At the same time, conducting field experiments is an expensive, difficult and long process that highlights the need for extensive use of mathematical and computer modeling. In this paper, mathematical models of elements of the gas-air path of the organic waste processing plant are obtained. The characteristics of the gas-air path of the plant as of an object of regulation for pressure in the lower and vacuum in the upper part of the combustion chamber are determined. The gas-air flow consists of the flue and the air ducts and serves to remove flue gases from the combustion chamber and supply air needed to maintain fuel combustion. When developing new automation systems, modeling allows assessing the applied solutions accurately, simplifying and reducing the cost of their development, solving the problems of system stability, optimizing transient processes, etc. The nonlinearity of the obtained mathematical models on the "the pressure at the inlet to the n-th section air-gas flow path — the pressure at the outlet of the n-th section of the air-gas flow path" channels, the nonstationarity of objects of control and dependence of their dynamic characteristics on operating mode of the plant are determined. Due to developed models, the two-way relationship of the gas and air paths has been revealed. When modeling, the gas-air flow of the plant is divided into several sections for which the mathematical models are obtained. They are required to synthesize controllers of flue gases vacuum in the upper part and the air pressure in the lower part of the combustion chamber.

Salinity Tolerance in Some Selected Aquatic Oligochaetes

1980 ◽  
Vol 65 (4) ◽  
pp. 499-505 ◽  
Author(s):  
Peter M. Chapman ◽  
Ralph O. Brinkhurst
Keyword(s):  
Salinity Tolerance ◽  
Aquatic Oligochaetes

Design and Validation of an Odor Reduction Facility for an Organic Waste/Slurry Processing Plant

2016 ◽  
Vol 2016 (2) ◽  
pp. 460-464
Author(s):  
Anders Wistrom ◽  
Jack Delin ◽  
Per Kaijser
Keyword(s):  
Organic Waste ◽  
Processing Plant

scholarly journals Characteristic evaluation of organic waste power plant in Bantargebang waste processing plant

2020 ◽  
Author(s):  
Didik Notosudjono ◽  
Bagus Dwi Ramadhon ◽  
Agung Tri Prasetyo ◽  
Hazairin Samaulloh ◽  
Arief Mudianto ◽  
...  
Keyword(s):  
Power Plant ◽  
Organic Waste ◽  
Processing Plant ◽  
Waste Processing

scholarly journals Synthesis of Automatic Control Systems for Technological Processes of the Gas-Air Path of the Organic Waste Processing Plant

2020 ◽  
Vol 18 (4) ◽  
pp. 86-105
Author(s):  
Stanislav R. Shakirov ◽  
Alexandr G. Kvashnin ◽  
Artem V. Pisarev
Keyword(s):  
Mathematical Modeling ◽  
Automatic Control ◽  
Combustion Chamber ◽  
Pilot Plant ◽  
Organic Waste ◽  
Control Method ◽  
Industrial Plant ◽  
Processing Plant ◽  
Technological Parameters ◽  
Technological Processes

A research team from ICT SB RAS is actively developing a system to control a pilot plant for processing organic waste automatically. The pilot plant can produce thermal energy and energy carriers (solid products, e.g. bio-coal, liquid products, e.g. bio-oil, and gaseous products, i.e. synthesis gas), for example, from biomass with different chemical composition and physical properties. The equipment can process "complex" types of waste characterized mainly by high moisture and high ash content. During tests of the pilot plant, the complexity of stabilizing the parameters of technological processes and ensuring the stability and reliability of operation of the equipment of the complex as a whole were identified. This is especially important when implementing high-temperature modes of biomass processing. In order to primarily solve these most important tasks, an automatic control system of the plant is being created. When a system for automatic control of technological parameters of the gas-air path of the pilot-industrial plant is developed, a mathematical model that describes the dynamic characteristics of the gas and air paths under various throughput rates of the plant was used. When determining mathematical models, a two-way relationship between the gas path and air path was identified (interchannel connections). When technologically complex real objects of control are being automated, in the inaccuracy of a priori information about the object, when the system operates in various uncertain external and internal situations, disturbing influences, a robust control method should be used. PID controllers were selected as corrective devices for stabilizing the technological parameters that characterize the operation mode of the gas-air path of the plant including pressure in the lower part and rarefaction in the upper part of the combustion chamber. The most appropriate method for determining the PID controller settings has been elected. Synthesis and simulation of the operation of the controllers of the pressure in the lower part and rarefaction in the upper part of the combustion chamber are performed. Basing on the results of mathematical modeling, the efficiency of the controllers of the pressure in the lower part and the rarefaction in the upper part of the combustion chamber for various loads of the plant has been shown, and their stability reserves by amplitude and phase are determined. The results of mathematical modeling of the stabilization contours of the technological parameters of the gas-air path of the plant are presented for two cases: without inter-channel connections and without the account of these connections. A simulation of the joint operation of the control circuits of the gas-air path of the plant is performed. Compensators for adjacent (interchannel) connections of the gas and air paths of the plant have been developed. The advantage of the proposed automation schemes is shown.

ON THE PROCESSING OF HEMATITE RAW MATERIALS AT THE KRYVOROZHSK MINING AND PROCESSING PLANT OF OXIDIZED ORE ON TECHNOLOGY OF DIRECT RECOVERY ITmk3

2018 ◽  
pp. 32-37
Author(s):  
P.I. Loboda ◽  
Younes Razaz ◽  
S. Grishchenko
Keyword(s):  
Magnetic Properties ◽  
Cast Iron ◽  
Iron Content ◽  
Raw Materials ◽  
Direct Reduction ◽  
Processing Plant ◽  
High Iron Content ◽  
High Iron ◽  
Direct Restoration ◽  
First Time

Purpose. To substantiate the efficiency of processing hematite raw materials at the Krivoy Rog Mining and Processing Plant of Oxidized Ores using the direct reduction technology itmk3®. Metodology. Analysis of the results of the itmk3® direct restoration technology developed by Kobe Steel Ltd., Japan and Hares Engineering GmbX, Austria, with a view to using it to process Krivbass hematite ores into granulated iron (so-called “nuggets”). Findings. The involvement in the production of hematite ores (oxidized quartzite) of Krivbass with high iron content, but with low magnetic properties for their processing into granular cast iron is grounded. Originality. The use of itmk3® direct reduction technology from Kobe Steel Ltd., Japan and Hares Engineering GmbH, Austria for the processing of Krivbass hematite ores into granular cast iron is justified for the first time. Practical value. The efficiency of the use of hematite ores (oxidized quartzite) has been substantiated, which can significantly reduce the costs in the mining cycle for the economical production of metallurgical products.

Combining ability for some salinity tolerance traits in rice

2007 ◽  
Vol 32 (2) ◽  
Author(s):  
Pranah Kumar Saha Ray ◽  
M Amirul Islam
Keyword(s):  
Salinity Tolerance ◽  
Combining Ability

Application of SSR Technique for the Identification of Markers Linked to Salinity Tolerance in Rice

2013 ◽  
Vol 19 (2) ◽  
pp. 57-65
Author(s):  
MH Kabir ◽  
MM Islam ◽  
SN Begum ◽  
AC Manidas
Keyword(s):  
Salt Tolerance ◽  
Ssr Markers ◽  
Salinity Tolerance ◽  
Seedling Stage ◽  
Phenotypic Screening ◽  
Salt Tolerant ◽  
Marker Assisted Breeding ◽  
Hydroponic System ◽  
Rice Landrace ◽  
Salt Susceptible

A cross was made between high yielding salt susceptible BINA variety (Binadhan-5) with salt tolerant rice landrace (Harkuch) to identify salt tolerant rice lines. Thirty six F3 rice lines of Binadhan-5 x Harkuch were tested for salinity tolerance at the seedling stage in hydroponic system using nutrient solution. In F3 population, six lines were found as salt tolerant and 10 lines were moderately tolerant based on phenotypic screening at the seedling stage. Twelve SSR markers were used for parental survey and among them three polymorphic SSR markers viz., OSR34, RM443 and RM169 were selected to evaluate 26 F3 rice lines for salt tolerance. With respect to marker OSR34, 15 lines were identified as salt tolerant, 9 lines were susceptible and 2 lines were heterozygous. While RM443 identified 3 tolerant, 14 susceptible and 9 heterozygous rice lines. Eight tolerant, 11 susceptible and 7 heterozygous lines were identified with the marker RM169. Thus the tested markers could be efficiently used for tagging salt tolerant genes in marker-assisted breeding programme.DOI: http://dx.doi.org/10.3329/pa.v19i2.16929 Progress. Agric. 19(2): 57 - 65, 2008

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