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The performances of three anaerobic filters (AF) with different types of supporting media (soft and hard packing double-media (SHM), hard packing media (HM) , and soft packing media(SM)) were evaluated through their ability to remove organic compounds in winery wastewater and biogas energy recovery. When hydraulic retention time (HRT) is 10 days and volume organic loading rate (OLR) is 9.02kgCOD/m...
The intensive and fast development of livestock farming with ecological pattern of raising-biogas-irrigating is widely applied in China. After anaerobic fermentation the agricultural wastes can provides clean energy. However, there is problem by lacking of land to digest the biogas slurry. Based on livestock wastewater from a dairy farming, the experiment used modified two-stage anoxic/oxic (A/O)...
Monosodium glutamate (MSG) wastewater is a very refractory case of high strength organic wastewater. To investigate the effect of operating variables on treatment of MSG wastewater, a laboratory scale study was conducted. The treatment of MSG wastewater was studied in a continuous flow anaerobic fluidized blanket (UASB) reactor. The effect of operating variables such as organic volumetric load rate...
The effect of hydraulic retention time (HRT) on the performance of hydrogen production from beet sugar wastewater by anaerobic fermentation using mixed microbial communities was investigated in a continuous stirred-tank reactor (CSTR) in this present study. A CSTR was designed and its performance was determined at various HRT. The goal was to find the optimal HRT for hydrogen production, to minimize...
The Purpose of this work was to explore upgrade of UASB(Up-flow Anaerobic Sludge Bed)technology, that has been proved inefficient in dealing with high strength organic content wastewater (COD concentration: 20,000-150,000 mg·l-1) from distillery plants that use cane molasses and cassava as feedstocks in GuangXi Region, China, where sugar and cassava starch are two pillar industries. The limits of...
The bio-diesel and 1,3-prpanediol (1,3-PD) processes are combined in our practices. The properties of flocculant from 1,3-propanediol fermentation was investigated. The characterization of the bioflocculant by GPC indicated the average molecular weight was about 2.0??105 Da. The neutral mono saccharides were the main component of the flocculant. Ca2+, Mg2+, Cu2+, K+ and Na+ were employed as flocculant...
Biohydrogen production with simultaneous wastewater treatment was studied in continuous stirred-tank reactor (CSTR) using beet sugar wastewater as substrate. Aerobic activated sludge was used as parent inoculum to startup the bioreactor. The reactor started up under the condition of influent COD concentration 4000 mg/L, pH 7, HRT 8 h and (35??1)??C, with a biomass of 6.09 g/L activated sludge in term...
The wastewater from distillation process has high organic content, which has to be treated to bring down the levels of COD and BOD to prescribed standards of environmental authorities. In this study, the organic wastewater from distillery also known as spent wash is treated by closed anaerobic reactors to recover methane rich biogas and utilise the methane as fuel to generate steam and electricity...
Two types of waste activated sludge (WAS) and kitchen garbage were used to prepare the WAS samples with different volatile solid (VS) contents, and the digestion efficiencies of prepared samples were investigated by mesophilic two-phase anaerobic digestion (TPAD) process. The experimental results showed that the ratio of volatile fatted acids and bicarbonate alkalinity (VFA/BA) in acidogenic phase...
Beech tree has high adaptability to environment and tolerance to water stress, and a long history of utilization and plantation in many countries. Moreover, beech wood is world- widely used as high-grade timber of paper making for its dendrological characteristics of fast growing, high biomass, medium density, high impact ductility, compressively bend strength. However, researches on Beech wood were...
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