The feasibility of two accumulation-systems (AC) for anaerobic digestion and storage of concentrated black-water with (AC1) or without (AC2) urine + kitchen organicwastes were investigated. The wastewater was collected by two vacuum toilet/transport systems. The influent-total chemical oxygen demand (COD) of the AC2 (53000 mg/L) was more concentrated by 4 times than that of the AC1. The AC syst...

Anaerobic digestion has been proven as sustainable process technology for organic waste conversion into renewable bio-energy. This study was conducted to evaluate the performance of mono-digestion different types food substrates using pilot scale anaerobic bio-digester (1200 L) in terms biogas production and chemical oxygen demand (COD) removal efficiency. The biochemical methane potential (BMP...

The effects of zero-valent iron (Fe0) on the performance of a mesophilic upflow anaerobic sludge blanket (UASB) reactor treating high-strength wastewater from the vitamin C biosynthesis industry (VCW) was investigated during a 200-day period. The results showed that the chemical oxygen demand (COD) removal efficiency, CH4 content in biogas, specific methanogenic activity of sludge, and phosphat...

Anaerobic biological wastewater treatment has numerous advantages over conventional aerobic processes; anaerobic biotechnologies, however, still have a reputation for low-quality effluents and operational instabilities. In this study, anaerobic bioreactors were augmented with an oxygen-transferring membrane to improve treatment performance. Two anaerobic bioreactors were fed a synthetic high-st...

The effect of adding alum water treatment residues (WTR) on the methanogenic activity in digestion primary domestic wastewater sludge was evaluated through laboratory experiments sedimentation columns, using total suspended solids (TSS) concentrations from 0.37 to 1.23 g/L. addition WTR clarifiers can benefit its effluent quality terms colour, turbidity, chemical oxygen demand (COD), and TSS. H...

Digester acclimatization can improve the efficiency of anaerobic digestion (AD), a potentially sustainable process for generating biogas from biological decomposition organic byproducts biodiesel production. This study examined impact rate on production and conversion in laboratory digesters using inocula wastewater treatment plant digester an agro-industrial waste digester. The results showed ...

Treatment of oilfield produced water was investigated using an anaerobic process coupled with micro-electrolysis (ME), focusing on changes in chemical oxygen demand (COD) and biodegradability. Results showed that COD exhibited an abnormal change in the single anaerobic system in which it increased within the first 168 hr, but then decreased to 222 mg/L after 360 hr. The biological oxygen demand...

The first step of anaerobic digestion, the hydrolysis, is regarded as the rate-limiting step in the degradation of complex organic compounds, such as waste-activated sludge (WAS). The aim of lab-scale experiments was to pre-hydrolyze the sludge by means of low intensive alkaline sludge conditioning before applying hydrodynamic disintegration, as the pre-treatment procedure. Application of both ...

Nowadays, population growth is likely to lead a wide variety of biomass wastes generation from the diversified human, industrial, and agricultural activities. Anaerobic digestion mostly applied manage mitigate huge spectrum environmental damages. This paper aims enhance anaerobic efficiency multicomponent substrates, using mixture waste activated sludge (WAS), olive mill wastewater (OMW), cattl...

The effect of biochar supplementation with different particle size on biogas production in two-stage anaerobic digestion white bread waste was carried out a laboratory scale using 100 mL bioreactor. variations sizes <63 µm, <125 <149 <250 and <500 µm the addition concentration 5 g/L, 15 25 g/L were investigated to obtain optimal concentrations. Mixed cultures incubated at 35 °C f...