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Turbidity and quantity of sediment particles during the regeneration of chemical solutions after cleaning of brewing equipment in the CIP system

Piepiórka-Stepuk J.

Agricultural Engineering

2018

Vol. 22, No. 3

37--48

The paper presents results of analysis of turbidity changes in washing solutions and the quantity of solid particles present in them during regeneration under various temperature conditions. Three solutions taken from breweries after the process of washing brewhouse equipment in the CIP system were evaluated. The results were subjected to statistical analysis, to define the functions that characterize the changes of the tested parameters in relation to time and temperature. The results showed that the tested solutions have different favourable conditions for their regeneration. It has also been shown that the character of changes in solutions in the regeneration process is more advantageously determined on the basis of turbidity tests of solutions.

W pracy zaprezentowano wyniki analiz zmian mętności roztworów myjących oraz ilości obecnych w nich cząstek osadów stałych w czasie regeneracji w różnych warunkach temperaturowych. Ocenie poddano trzy roztwory pobierane z browarów po procesie mycia urządzeń warzelni w systemie CIP. Wyniki poddano analizie statystycznej wyznaczając funkcje charakteryzujące zmiany badanych parametrów w zależności od czasu i temperatury. Wyniki badań wykazały, że badane roztwory posiadają odmiennie korzystne warunki ich regeneracji. Wykazano również, że charakter zachodzących zmian w roztworach w procesie ich regeneracji korzystniej jest określać na podstawie pomiaru mętności roztworów.

Możliwości usunięcia substancji ropopochodnych z sieci i instalacji wodociągowych

Błażejewski M.

Ochrona Środowiska

2001

nr 4

47-48

A rural water supply system was contaminated with crude oil along a length of several kilometres. The tap water had a disagreeable odour and carried oil spills on its surf ace. Prewashing with water was found to be insufficient. Analysis of pipe samples showed that crude oil had occluded on the iron-containing incrustation. On the basis of laboratory tests, a procedure was established for the removal of the oil-contaminated incrustation layer. The procedure involved a solution which was made up of NaHSO4, TPF and Roksol MS (a mixed nonionic and anionic surfactant). The pipeline was washed stepwise. The said solution was passed to particular pipe sections, and mixing was provided via air supply. After 24 hours of treatment, the pipe section was rinsed, and the effluent was collected in tanks before it was sent to the wastewater treatment plant. The rinsing procedure was discontinued after the concentration of anionic and nonionic surfactans decreased to the value of 0.1 g/m[3] and 0.2 g/m[3], respectively, and the tap water was free of benzene and of the typical crude oil odour.