- Tytuł:
-
Matematyczny opis technologii podczyszczania ścieków zawierających kleje organiczne
Mathematical description of wastewater containing glue treatment technology - Autorzy:
-
Juraszka, B.
Piecuch, T. - Powiązania:
- https://bibliotekanauki.pl/articles/1826076.pdf
- Data publikacji:
- 2007
- Wydawca:
- Politechnika Koszalińska. Wydawnictwo Uczelniane
- Tematy:
-
oczyszczanie ścieków
kleje organiczne - Opis:
- More and more industrial plants aims to use simple and the most economic system of water usage, so called "closed system". Working of this system consists in second utilization of once already used water and only small quantities are added to water once taken. Such solutions are very profitable for the whole ecosystem, because they do not violate the supplies of water and do not pollute with their wastes. Since 2001 the Division of Water-Sludge Technology and Waste Utilization of Koszalin University of Technology tied co-operation with DREWEXiM Plant which produces windows and doors and other wooden elements situated in Nowe Bielice near Koszalin in order to work out technology of Wastewater from this plant treatment. Wastewater - the object of investigations come into being during rinsing of glue installations and first of all rollers transferring glue onto wooden elements. On the basis of many identification investigations technological arrangement of wastewater pre-treatment presented in fig. 1. was proposed. The paper presents results of mathematical analysis of laboratory research results on wastewater from glue processing treatment technology which includes following unit processes: coagulation and sedimentation, filtration, sorption and centrifugal sedimentation. Each node of technology presented in figure 1 was researched in laboratory scale. Results of this research were mathematically analyzed using central point method, developed by Prof. Tadeusz Piecuch. After analysis set of mathematical equations describing influence of tested independent parameters on resulting parameters was gained, presented in chapter 5 of this paper. After establishing final analytical - empirical mathematical equations several random experiments were executed at randomly selected values of individual xi variables within studied ranges of changes, on purpose selected in such way so that these values do not mate with central point of approximation, but only with space around this point, and so with the space in which it is assumed that received equations may be applied and compare them with calculations made on the basis of earlier received equations. Differences between values got during laboratory investigations and on the basis of formulae are small and are from several to a dozen or so percent. Accuracy of equations was estimated with the t-studenta test. For n - 1 = 6 degrees of freedom and at significance level alfa = 0,05 from tables of the t-student distribution the value border t alfa was read: t0, 05 = 2,447. Comparing reached values of individual test functions t with value border t0, 05. one can see that all these values are smaller than the border value. So it can be affirmed that equations are received after individual processes sufficiently accurate at 95% of trust, and the results received on the basis of equations are compatible (in approximation) with results received in laboratory conditions. Analysis of differences between test results and mathematical results allows to state that presented mathematical analytical and empirical description of wastewater containing glue treatment technology is precise enough after transferring it from laboratory scale. Therefore it is possible to describe mathematically processes used in this installation, and what follows, it is possible to simulate these processes and predict results of their work. This mathematical analytical and empirical description may be extended by introduction of new parameters (chemical reagents, flocculants or sorbents) broadening its usage range, as well as prediction of results in other treatment installations of similar wastewater in similar plants.
- Źródło:
-
Rocznik Ochrona Środowiska; 2007, Tom 9; 107-131
1506-218X - Pojawia się w:
- Rocznik Ochrona Środowiska
- Dostawca treści:
- Biblioteka Nauki
Artykuł