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Zastosowanie destylacji membranowej do oczyszczania zaolejonych ścieków

Gryta Marek

Przemysł Chemiczny

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2019

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T. 98, nr 10

1639--1641

PL

Do oczyszczania zaolejonych ścieków powstających na statkach zastosowano destylację membranową. W badaniach wykorzystano dwa rodzaje membran kapilarnych z polipropylenu. Badano wpływ składu ścieków, grubości membran i czasu ich eksploatacji na wydajność oczyszczania oraz jakość otrzymywanego destylatu. Podczas 1000 h pracy modułów membranowych stwierdzono spadek wydajności procesu wskutek foulingu membran, co ograniczono, stosując ich periodyczne mycie. Niezależnie od składu ścieków membrany zatrzymywały związki organiczne i sole, co pozwoliło uzyskać czystą wodę o małym przewodnictwie właściwym. Morfologię oraz skład osadów badano metodą mikroskopii skaningowej połączonej z mikroanalizą rentgenowską.

EN

The wastewater collected from the port sewage treatment plant was treated by using 2 types of polypropylene membranes with a porosity of 73%, and a pore size of 0.2 μm but differing in thickness. A decrease in the process efficiency due to membrane fouling was found during the 1000 h long test. The filter cake was removed by washing with 3% HCl. The morphol. and compn. was studied by scanning electron microscopy coupled with energy-dispersing spectrometry. Regardless of the sewage compn., a high quality water was obtained in each studied case.

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The adsorption effectiveness during emulsion separation on a carbon-lime bed

Sobczak E., Gozdecka G.

Ekologia i Technika

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2006

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R. 14, nr 2

77-81

EN

A study of the effectiveness of oil sewage purification by filtration on a carbon-lime bed was carried out. The volume ratio of carbon ash to waste lime equalled Vc/VCa = 0.375; 0.5; 0.625 of a regenerated carbon-lime bed. The ether extract, COD and inorganic contaminations with components of the bed, such as Ca+2, Cl-, were determined. The effectiveness of sewage purification increased as the quantity of sewage treated was increased. Sewage purification by adsorption on the carbon-lime bed does not solve the problem of environment protection as pollution get transported from liquid to solid state, and oily slag heaps of the used absorbent are produced. This in consequence causes the environment pollution as well. Relating to this, there is a need to regenerate oily absorbents and reuse them in adsorption process. The effectiveness of sewage purification on a regenerated bed and permeability of the bed after regeneration are similar to those for a freshly-prepared bed.

3

Badanie procesu rozdzielania zanieczyszczeń organicznych przez filtrację ścieków olejowych na złożu wapna posodowego oraz popiołu węglowego

Sobczak E.

Inżynieria i Aparatura Chemiczna

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2003

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Nr 1

35-36

EN

The effectiveness of oil sewage purification by filtration on carbon—lime bed was studied, the voluminal ratio of carbon ash to waste lime was equal to Vc/Vcn = 0,25; 0,375; 0,5; 0,625; 0,75; 1,00. The ether extract, COD, absorbance and inorganic contaminations with components of bed such as Ca+2, Cl~ were determined. The effectiveness of sewage purification increased as the quantity of sewage increased. The effectiveness of sewage purification on regenerated bed and permeability of the bed after regeneration were similar to those for new—prepared bed.