TY - JOUR ID - 967 TI - Intensification of the Biomethanisation Process in Wastewater Treatment Plant JO - International Journal of Environmental Research JA - IJER LA - en SN - 1735-6865 AU - Drzewicki, A. AU - Bułkowska, K. AU - Tomczykowska, M. AD - University of Warmia and Mazury, Poland AD - Water and Sewerage Corporation in Ostroda, Poland Y1 - 2015 PY - 2015 VL - 9 IS - 3 SP - 805 EP - 812 KW - Anaerobic digestion KW - biogas KW - Co-substrates KW - WWTP KW - Sewage sludge DO - 10.22059/ijer.2015.967 N2 - In the present study, the increase of organic loading rate (OLR) influences the biomethanisation of sewage sludge. The research was conducted at technical scale in wastewater treatment plant in Tyrowo (near Ostróda, Poland). It has been shown that the increase of OLR, by adding co-substrates, cause the increase of biogas production but not biogas yield coefficient. The substrates used for anaerobic digestion were primary sludge and excess sludge. As co-substrates there were fats, thin stillage and whey. The highest total biogas production of 115977 m3/month and electricity production of 231.3 MWh were obtained for the highest OLR of 1.88 kg VS/m3.d. Anaerobic co-digestion of primary and excess sewage sludge with co-substrates at the highest OLR caused an increase of pH to 7.7 and volatile fatty acid concentration to 616 mg/dm3, but there was no loss to the stability of the process. Regardless of organic loading rate, the concentration of ammonium nitrogen was within the optimal range. UR - https://ijer.ut.ac.ir/article_967.html L1 - https://ijer.ut.ac.ir/article_967_b5be3bc71ccdb4db040e80469b709fbe.pdf ER -