Sludge dewatering in a decanter centrifuge aided by cationic flocculant Praestol 855BS and essential oil of waste orange peels

• Autorzy: Kowalczyk E. , Piecuch T.

Identyfikatory

DOI

10.1515/aep-2016-0001

Warianty tytułu

PL

Odwadnianie osadów ściekowych w wirówce dekantacyjnej wspomagane flokulantem kationowym Praestol 855BS i olejkiem eterycznym z odpadu skórek pomarańczy

• Języki publikacji: EN

Abstrakty

EN

In the study the comparative analysis of test results of drainage of municipal wastewater sludge was conducted with the use of flocculant Praestol 855BS and the mixture of flocculant Praestol 855BS 50% + orange essential oil 50%, as the reagents supporting this process. It was also attempted to reduce unpleasant smells exuding from the drained sludge. The process of drainage of municipal wastewater sludge was conducted in the laboratory setting centrifuge of MPW-350 type. The variable independent parameters were centrifugation time, centrifugation speed, dosage of flocculant Praestol 855BS as well as dosage of mixture in the proportion of flocculant Praestol 855BS (50%) + orange essential oil (50%). The following parameters were subject to assessment: water content in the sludge, dry mass content in the reflux as well as time of maintenance of the oil’s smell in the sludge. The conducted tests demonstrated that the orange essential oil has an impact on drop in resultant quality parameters of the drainage process of municipal wastewater sludge. Batching of the orange essential oil has an impact on considerable reduction of odours exuding from drained wastewater sludge, and thus on improvement of work conditions connected with operation of centrifugal separators. Bearing in mind both the efficient drainage process of wastewater sludge as well as simultaneous reduction of unpleasant smells exuding from the sludge during this process it is assumed and recommended to simultaneously apply both reagents, that is flocculant Praestol 855BS (50%) and orange essential oil, also in the volume of 50%.

PL

W pracy przeprowadzono ocenę porównawczą wyników badań odwadniania komunalnych osadów ściekowych z zastosowaniem flokulanta Praestol 855BS i mieszaniny flokulant Praestol 855BS 50% + olejek eteryczny z pomarańczy 50%, jako odczynników wspomagających ten proces, a także podjęto próbę obniżenia nieprzyjemnych zapachów wydzielających się z odwodnionych osadów. Proces odwadniania komunalnych osadów ściekowych prowadzono w laboratoryjnej wirówce sedymentacyjnej typu MPW-350. Parametrami zmiennymi niezależnymi procesu odwadniania były czas wirowania, prędkość wirowania, dawka fl okulanta Praestol 855BS oraz dawka mieszaniny w proporcji flokulant Praestol 855BS 50% + olejek eteryczny z pomarańczy 50%. Ocenie poddano: zawartość wody w osadzie, zawartość suchej masy w odcieku oraz czas utrzymywania się zapachu olejku w osadzie. Przeprowadzone badania wykazały, że olejek eteryczny z pomarańczy wpływa na spadek parametrów wynikowych, jakościowych procesu odwadniania komunalnych osadów ściekowych. Dozowanie olejku eterycznego z pomarańczy wpływa na znaczne obniżenie odorów wydzielających się z odwodnionych osadów ściekowych, a tym samym na polepszenie warunków pracy obsługi wirówek. Mając na uwadze zarówno efektywny proces odwadniania osadów ściekowych z jednoczesnym zmniejszeniem nieprzyjemnych zapachów wydzielających się z osadów podczas tego procesu, przyjmuje się i zaleca do aplikacji dawkowanie jednoczesne obydwu odczynników, tj. fl okulanta Praestol 855BS 50% oraz olejku eterycznego z pomarańczy także 50% udziału objętościowego.

Słowa kluczowe

EN

flocculant; essential oil; sewage sludge; odours; noxious odour

PL

flokulant; olejek eteryczny; osad ściekowy; zapachy; nieprzyjemny zapach

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2016
• Tom: Vol. 42, no. 1
• Strony: 3--18
• Opis fizyczny: Bibliogr. 50 poz., rys., tab., wykr.

Twórcy

autor

Kowalczyk E.

• Koszalin University of Technology, Poland Faculty of Civil Engineering, Environmental and Geodetic Sciences

autor

Piecuch T.

• Koszalin University of Technology, Poland Faculty of Civil Engineering, Environmental and Geodetic Sciences

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