Knowledge, Attitude, and Practical Using of Filtration Tool in Woman Farmer Group at Tanjung Mas Semarang

The Tunas Bahagia farmer woman group in RW 9 Tanjung Mas Village is on of the which is still acute in house in produces area provides food production. Problem with KWT, lack of close water sources and improve the quality of water sources for irrigationon agricultural land. Group knowledge some of the woman farmers do not understand about the content of the media and the placement of the filtration device, group attitude women against filtration devices have shown positive and participants can practice the tools. Fitration on the land area of the female farmer group is very good. It is necessary to have education in a sustainable manner for the use of filtration equipment in addition to watering can also used for household needs. Empowerment of women farmer group is also important improved.

Exposure to Nanoparticles in Thermal Spraying — Vigilance Towards the Operator and the Outside Environment

This paper presents the results of an emission study on plasma spraying equipment and processes. Various measurements and samples were taken outside the spraying booth, at the operator level, and in the suction ducts upstream and downstream of the filtration equipment, creating a detailed profile of the aerosol emitted by the injection of NiAl powder in the plasma jet. The results show the existence of two families of particles, one ranging in size from 0.5 to 20 µm, the other of nanometric proportions. Concentrations of the larger particles were in the range of 600 cm-3 in the booth. As for submicron particles, concentrations of up to 107 cm-3 were observed but decreased significantly at the outlet of the filter system. The aerosol samples examined were dominated by a nanometric background of aggregates made up of oxidized nickel particles. Aggregates up to 100 nm in size, consisting of finer particles in the 5-20 nm size range, were found in high concentrations upstream of the filtration system. Great vigilance is thus required to protect equipment operators, an important part of which is placing dust collectors as close as possible to spraying booths connected by short, straight pipe runs.

VALIDATION OF FILTRATION EQUIPMENT FOR AIR DEDUSTING IN SUBWAYS

Subways, as the places where a large number of people are present, are put under under stringent standards of high microlimate and air quality, namely, the content of air-borne dust. In order to maintain dust concentration within the permissible limits, it is suggested to install air filters at ventilation connections at subway stations, which are affected by the piston effect. Using the earlier experimental results, the nonstationary air flow parameters under the piston effect and the structure of air flow at the ventilation connections at subway stations are determined in two-dimensional layout, which allows selection of filtration equipment for removal of dust from subway air, and enables determination of the equipment location at ventilation connections. In order to validate the filtration equipment selection, the review and analysis of the geometry, design and performance of the available facilities are carried out. The most suitable filtration equipment for air dedusting is suggested.

Measurement of flow and pressure characteristics of combustion engine oil filters

For the purpose of measuring the flow and pressure characteristics of oil filters used in vehicles with internal combustion engines, a laboratory test equipment was used, which was designed at the Department of Transport and Handling of the Slovak University of Agriculture in Nitra. The target information from the given measurement is the obtained data on the change of flow and pressure, based on the type of oil filter used. The contribution of this paper is information that can be used in the future in the design of new filtration equipment, as well as the creation of a system for evaluating the technical life of motor oils, in order to extend the service intervals of motor oil, monitored set of motor vehicles.

Experimental study on filtering papermaking black liquor by dynamic blade crossflow membrane

The fundamental reason for the environmental pollution caused by the papermaking industry is the inadequate treatment of the black liquor. How to dispose of the lignin macromolecules, which is the main pollutants in the black liquor, is the key to addressing the environmental pollution. At present, cross-flow membrane filtration is one of the effective ways to retain and recycle lignin macromolecules in black liquor. The paper proposes the adoption of a dynamic blade cross-flow membrane filtration equipment provided by German BOKELA company to treat papermaking black liquor. The experiment shows that when the black liquor is treated with dynamic blade rotation cross-flow, the membrane with a molecular weight cut-off of nanofiltration (NP010) delivers the best retaining effect, with 28 % more lignin in black liquor than that in untreated black liquor. Meanwhile, when the blade rotational speed reaches 300 rpm and the transmembrane pressure is 0.5 or 2 bar, the flux of black liquor through nanofiltration NP010 is relatively desirable.