Anaerobic digestion of slaughterhouse wastewater using a combination sludge blanket and filter arrangement in a single reactor

Anaerobic Digestion of Slaughterhouse Wastewater for Methane Recovery and Treatability

“…Since, the slopes of the lines are positive, the gas production is positively correlated and increased with increasing organic loading rate from phase 1 to phase 3. This revealed that the microbial biomass in the digester was continuously acclimatizing to the changing environmental conditions created due to the increased OLR [3,8]. In addition, it was observed that the digester was stable from phase 1 through phase 3 substantiated by the normal range of pH measured daily (table 2).…”

Vertical-Flow Constructed Wetlands in Cooperating with Oxidation Ponds for High Concentrated COD and BOD Pig-Slaughterhouse Wastewater Treatment System at Suphanburi-Provincial Municipality

“…In general, the engineering devices are used for wastewater treatment system in case of Filtration, Floatation, Skimming, Sedimentation, Asa Grit Chamber, Precipitation, Chemical Coagulation, Neutralization, Oxidation Pond (OP), Activated Sludge (AS), Stabilization Pond (SP), Aerated Pond (AP), Aerated Lagoon (AL), Bio Ditch Filter (BDF),Trickling Filter (TF), Upflow Anaerobic Sludge Blanket (UASB), Rotating Bio Contractor (RBC), Phytoremediation/Phytoextraction, Carbon Adsorption (CA), Activated Carbon Absorption (ACA), Reverse Osmosis (RO), Ion Exchange (IE) and some modified equipments to decrease the specific pollutants. (Metcalf and Eddy 1979, Ramsey et al 2013, Borja et al 1998, Metcalfe et al 1979. Unfortunately, the failure of implementing wastewater treatment has been found all the country (Faerge et al 2001, Berkun 2005, Faulkner et al 2000, Padgett 1975,Streeter and Phelps 1925, Tyagi et al 1999, Hosetti and Frost 1995, especially the settlement of factories and cities along the riverbanks as the serious point sources for causing stream pollution (Streeter and Phelps 1925, Tyagi et al 1999, Faulkner et al 2000, Berkun 2005, Pattamapitoon 2013).…”

Evaluation of Biogas Production Yields of Different Waste Materials

“…Wastewaters from slaughterhouses and cheese factories fall into this category and it is difficult to treat these liquid effluents in a conventional wastewater treatment process due to their high organic loadings and requirements to long hydraulic retention times and large reactor volumes (Borja et al, 1998).…”

“…Anaerobic process is an alternative for the treatment of highly loaded effluents such as slaughterhouse wastewater which has high concentrations of COD and other biodegradable components (Spece, 1999). Ruiz et al (1997) and Borja et al (1998) treated slaughterhouse wastewater in an up-flow anaerobic sludge blanket (UASB) reactor and they obtained a COD removal more than 90% at a hydraulic retention time (HRT) of 0.5 days and a temperature of about 37 o C. Because of differences between the statements of their results, it is difficult to compare biogas yields. Alvarez and Liden (Alvarez & Liden, 2008) mixed fruit and vegetable wastes with slaughterhouse waste and co-digested in an anaerobic reactor at 35 o C. They indicated that it is possible to reduce the volatile solid material (VSM) contents of about 50% and 65% and to obtain a methane yield of about 0.3 m 3 kg -1 VSM.…”

“…Wastewater which has high organic loading needs to be treated generally by anaerobic digestion at longer hydraulic retention times (Borja et al, 1998;Demirel et al, 2005;Tritt 1992;Rajeshwari et al, 2000). The efficiency of anaerobic digestion process is dependent on the type and composition of the material to be digested.…”