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Centrifugal dewatering of sediments from installation for pretreatment of wastewater from fish-processing plant

Dąbrowski T., Piecuch T.

Environment Protection Engineering

2007

Vol. 33, nr 1

89-101

A comprehensive installation for treating wastewater from the fish processing in the SUPERFISH plant in Ustronie Morskie. Poland, allows also utilization of sludge obtained during wastewater treatment. The results of sludge dewatering by means of centrifugal sedimentation combined with flocculation are presented. The results of examinations were approximated with equations applying the method of the central point. Then these equations were verified. The results show that centrifugal sedimentation is effective in the dewatering of sludge, and that the flocculants added (especially F52M) efficiently enhance dewatering process.

Kompleksowy układ podczyszczania ścieków pochodzących z przetwórstwa ryb w Zakładzie Przetwórstwa Ryb SUPERFISH uwzględnia również zagospodarowanie osadów powstających w czasie oczyszczania ścieków. W artykule przedstawiono rezultaty odwadniania osadów w wirówce sedymentacyjnej. Otrzymane wyniki aproksymowano, korzystając z równań i stosując metodę punktu centralnego. Uzyskane równania poddano weryfikacji. Otrzymane wyniki pokazały, że sedymentacja odśrodkowa jest skuteczna w odwadnianiu osadów, a dodatek flokulantów (w szczególności F52M) poprawia skuteczność procesu odwadniania.

Matematyczny opis technologii podczyszczania ścieków z zakładu przetwórstwa ryb

Dąbrowski T., Piecuch T.

Rocznik Ochrona Środowiska

2005

Tom 7

71-98

The paper presents results of mathematical analysis of laboratory research results on wastewater from fish processing treatment technology which includes following unit processes: flotation, coagulation and sedimentation, sorption, centrifugal sedimentation, pyrolisis and utilization of secondary wastes from pyrolisis. 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. Next some of these results were tested in real conditions, in the wastewater treatment plant built in SUPERFISH fish processing plant on the basis of diagram presented in the figure 1. Results of analysis of treated wastewater in the installation were compared with results of mathematical calculations using equations from chapter 5. Analysis of differences between test results and mathematical results allows to state that presented mathematical analytical and empirical description of wastewater from fish processing established and working in SUPERFISH plant in Kukinka near Ustronie Morskie, is precise enough after transferring it from laboratory scale into real conditions of wastewater treatment plant work. 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 fish processing plants.