Organic Compounds of Natural Origin in Sludge from Waste-Water Treatment Plant

• Autorzy: Kucharova J. , Raclavska H. , Raclavsky K.

Warianty tytułu

PL

Związki organiczne pochodzenia naturalnego w osadach z oczyszczalni ścieków

• Języki publikacji: EN

Abstrakty

EN

Organic compounds of natural origin were analyzed in three types of sludge produced by waste water treatment plant – limed sludge with 12 % of CaO, limed sludge with 6% of CaO and sludge without processing. Analysis was performed by pyrolytic gas chromatography with mass spectrometry detection (Py-GC/MS). The main component pf natural origin in waste-water treatment sludge were determined. They comprise compounds form the following groups: fatty acids and their methylesters, steroids, substances derived from polysaccharides, substances derived from lignin, compounds with nitrogen (both heterocyclic and aliphatic), substances with so called non-specific origin (toluene, styrene, acetic acid, methylphenols and phenols). Interpretation was attempted for identification of organic compounds sources as well as determination of humification and mineralization degree. The ratio benzene/toluene was used as the criterion for humification in waste-water treatment sludge. Benzene is derived from degradation of condensed aromatic structure, toluene is derived from both condensed aromatic structures and pseudostable organic matter. The ratio furfural/pyrolle was used of expression of mineralization degree of organic matter. Furfural is a product of labile organic matter (saccharides) while pyrolle originates from stable organic matter (humified components containing nitrogen). Compared with non-limed sludges, limed sludges have higher rate of decomposition of organic matter as well as subsequent mineralization. Limed sludges accumulate more compounds derived from lignine which is caused by more intensive decomposition of polysaccharides. From the point of view of utilization in agriculture, limed sludge is the most suitable sludge produced by waste-water treatment.

PL

Przeanalizowano związki organiczne pochodzenia naturalnego w trzech typach osadów wytwarzanych przez oczyszczalnie ścieków - szlam wapnowany zawierający 12% CaO, szlam wapnowany z 6% CaO i osady nieprzetworzone. Analizę przeprowadzono za pomocą pirolitycznej chromatografii gazowej ze spektrometrią masową (Py-GC / MS). Określono główne składniki pochodzenia naturalnego w osadach z oczyszczalni ścieków. Stanowią one związki z następujących grup: kwasy tłuszczowe oraz ich estry metylowe, steroidy, substancje pochodzących z polisacharydów, substancje pochodzące z ligniny, związki z azotem (zarówno heterocyklicze i alifatyczne), substancje o tzw. niespecyficznym pochodzeniu (toluen, styren, kwas octowy, metylofenole i fenole). Przedstawiono próbę identyfikacji źródeł związków organicznych, a także określenia stopnia humifikacji i mineralizacji. Stosunek benzenu do toluenu stosuje się w osadach z oczyszczalni ścieków jako kryterium humifikacji. Benzen jest pochodną z degradacji skondensowanej struktury aromatycznej, toluen pochodzi zarówno ze skondensowanych struktur aromatycznych jak i z pseudostabilnej materii organicznej. Stosunek furfural/pyrol użyto w celu ekspresji stopnia mineralizacji materii organicznej. Furfural jest produktem nietrwałej substancji organicznej (sacharydy), a pyrol pochodzi ze stabilnej materii organicznej (nawilżonych składników zawierających azot). W porównaniu z niewapnowanymi osadami, osady wapnowane mają wyższy wskaźnik rozkładu materii organicznej, jak i późniejszej mineralizacji. Wapnowane osady gromadzą więcej związków pochodzących z ligniny co jest spowodowane bardziej intensywnym rozkładem polisacharydów. Z punktu widzenia wykorzystania w rolnictwie, szlam wapnowany jest najbardziej odpowiednim osadem wytwarzanym przez oczyszczalnie ścieków.

Słowa kluczowe

EN

waste–water treatment sludge; organic compounds; humification; mineralization; Py-GC/MS

PL

przeróbka ścieków i osadów; związki organiczne; humifikacja; mineralizacja; Py-GC/MS

• Wydawca: Polskie Towarzystwo Przeróbki Kopalin
• Czasopismo: Inżynieria Mineralna
• Rocznik: 2014
• Tom: R. 15, nr 2
• Strony: 61--66
• Opis fizyczny: Bibliogr. 20 poz., tab., wykr.

Twórcy

autor

Kucharova J.

• Energy Units for Utilization of non Traditional Energy Sources (ENET), VŠB – Technical University of Ostrava, 17. listopadu 15, 708 33, Ostrava – Poruba, Czech Republic

autor

Raclavska H.

• Institute of Geological Engineering, VŠB – Technical University of Ostrava, 17. listopadu 15, 708 33, Ostrava – Poruba, Czech Republic

autor

Raclavsky K.

• Energy Units for Utilization of non Traditional Energy Sources (ENET), VŠB – Technical University of Ostrava, 17. listopadu 15, 708 33, Ostrava – Poruba, Czech Republic

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