Upflow Anaerobic Sludge Blanket Articles on Environmental XPRT

Lipid Degradation in a Two-Phase Anaerobic SBR and Upflow Anaerobic Sludge Blanket

LCFAs, the intermediate products in lipid biodegradation are known to inhibit microorganisms by their toxicity and floatation. To reduce LCFA inhibition, two-phase anaerobic system, consisting of anaerobic sequencing batch reactor (ASBR) and upflow anaerobic sludge blanket (UASB) reactor, was applied to synthetic dairy wastewater. During 153 days of continuous operation, two-phase system showed ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Treatment of slaughterhouse wastewater in upflow anaerobic sludge blanket reactor

The performance of an upflow anaerobic sludge blanket (UASB) reactor operated at ambient temperature (20.9–25.2°C) was analysed for the treatment of slaughterhouse wastewater previously pre-treated for solid separation. The experimental work was carried out in a reactor with 15 L effective volume. Four organic loads were applied and the process performance was evaluated. The COD removal rate ...

Mar. 1, 2011

By IWA Publishing

Treatment of domestic wastewater using upflow anaerobic sludge blanket reactor

This paper presents the findings of the study on treatment of domestic wastewater using a laboratory scale Hybrid Upflow Anaerobic Sludge Blanket (HUASB) reactor. The reactor with a working volume of 5.9 L and plastic cut rings as packing media was operated at varying Hydraulic Retention Time (HRT) for a period of 110 days. While the COD removal varied from 75-86%, the BOD removal was in the ...

Jun. 20, 2007

By Center for Environment and Energy Research & Studies (CEERS)

Start-up of upflow anaerobic sludge blanket reactor at brewery case study

Start-up Seed Sludge Augmented Using Microcat - UASB BioBlend Problem The commissioning of a new wastewater treatment system consisting of an upflow anaerobic sludge blanket reactor (UASB) can be slow and expensive. In this case the UASB is followed by an aerobic activated sludge treatment system at a brewery.The system is located in a rapidly growing part of ...

Sep. 13, 2013

By Bioscience, Inc.

Acclimation of the trichloroethylene-degrading anaerobic granular sludge and the degradation characteristics in an upflow anaerobic sludge blanket reactor

The granulation process was examined in an 8 L laboratory upflow anaerobic sludge blanket (UASB) reactor using synthetic wastewater contained trichloroethylene (TCE). Glucose and lactate were used as primary substrates. The anaerobic bacteria biomass were acclimated and granulated by increasing the chemical oxygen demand (COD) and TCE loadings. Anaerobic sludge was acclimated successfully in 120 ...

Jan. 16, 2014

By IWA Publishing

Mathematical modeling of upflow anaerobic sludge blanket (UASB) reactor treating domestic wastewater

Although the upflow anaerobic sludge blanket (UASB) reactor has been widely applied for domestic wastewater treatment in many developing countries, there is no sufficient mathematical model for proper design and operation of the reactor. An empirical model based on non-linear regression was developed to represent the physical and chemical removal of suspended solids (SS) in the reactor. ...

Nov. 6, 2012

By IWA Publishing

Performance of Upflow Anaerobic Sludge Blanket (UASB) reactor treating simulated wastewaters containing 1,1,2-Trichloroethane and 1,1,2,2-Tetrachloroethane

Reactors R2 and R3 were investigated for biodegradation of 1,1,2-Trichloroethane and 1,1,2,2-Tetrachloroethane respectively, during acclimation phase. Reactor R1 was maintained as control. The stepwise increment in concentration of 1,1,2-TCA from 5 mg/L to 40 mg/L in R2 caused no inhibition to reactor performance. The percentage of 1,1,2-TCA and COD removal was 99.9% and 98.6%, respectively. ...

Dec. 12, 2011

By Inderscience Publishers

Phenol degradation and microbial characteristics in upflow anaerobic sludge blanket reactors at ambient and mesophilic temperatures

A synthetic wastewater containing phenol as sole substrate was respectively treated at temperatures of 26±1°C and 37±1°C in 2.8 litre upflow anaerobic sludge blanket (UASB) reactors. At the two temperatures, pH 7.0?7.5, with a 1:1 effluent recycle ratio, phenol in wastewater was efficiently degraded in a UASB reactor. Microbial community analysis using denaturing gradient gel electrophoresis ...

Jan. 29, 2008

By Inderscience Publishers

A downflow hanging sponge (DHS) reactor for faecal coliform removal from an upflow anaerobic sludge blanket (UASB) effluent

This research was conducted to study the faecal coliforms removal capacity of downflow hanging sponge (DHS) reactors as a post-treatment for an upflow anaerobic sludge blanket (UASB) reactor. Three long-term continuous laboratory-scale DHS reactors, i.e. a reactor with cube type sponges without recirculation, a similar one with recirculation and a reactor with curtain type sponges, were ...

Aug. 11, 2015

By IWA Publishing

A case study of coupling upflow anaerobic sludge blanket (UASB) and ANITA™ Mox process to treat high-strength landfill leachate

A pilot study was conducted to study the treatability of high-strength landfill leachate by a combined process including upflow anaerobic sludge blanket (UASB), carbon removal (C-stage) moving bed biofilm reactor (MBBR) and ANITA™ Mox process. The major innovation on this pilot study is the patent-pending process invented by Veolia that integrates the above three unit processes with an ...

Oct. 20, 2015

By IWA Publishing

Treatment of Alkali-Pretreated Slurry of Organic Fractions of Municipal Solid Waste using Upflow Anaerobic Sludge Blanket (UASB) Reactor

[Master's Thesis in Environmental Engineering] As an alternative technology for use of local governments, we propose to demonstrate the suitability of anaerobic digestion (AD) system to treat the organic fractions of municipal solid waste (OFMSW). To enhance the process, we applied several pre-treatment steps: comminution, extraction, and addition of sodium hydroxide to achieve the desired pH ...

Jun. 1, 2007

Effects of organic loading and oil-grease for the treatment of edible oil effluent in a pilot-scale upflow anaerobic sludge blanket process

In this study, Karadeniz Birlik Dogan Erdil vegetable oil factory, Elazig City, Turkey, was selected as representative of this sector. During the first part of the test programme, the quality of raw effluents was investigated. The removals of COD and oil-grease were above 85% at organic loadings between 1.62 and 7.83 kg COD m-3 d-1 at hydraulic retention times of ...

Jan. 26, 2004

By Inderscience Publishers

Grey water treatment in upflow anaerobic sludge blanket (UASB) reactor at different temperatures

The treatment of grey water in two upflow anaerobic sludge blanket (UASB) reactors, operated at different hydraulic retention times (HRTs) and temperatures, was investigated. The first reactor (UASB-A) was operated at ambient temperature (14–25 °C) and HRT of 20, 12 and 8 h, while the second reactor (UASB-30) was operated at controlled temperature of 30 °C and HRT of 16, 10 and 6 h. The two ...

Jan. 1, 2011

By IWA Publishing

Impact of aluminum chloride on process performance and microbial community structure of granular sludge in an upflow anaerobic sludge blanket reactor for natural rubber processing wastewater treatment

In this study, granular sludge formation was carried out using an aluminum chloride supplement in an upflow anaerobic sludge blanket (UASB) reactor treating natural rubber processing wastewater. Results show that during the first 75 days after the start-up of the UASB reactor with an organic loading rate (OLR) of 2.65 kg-COD·m−3·day−1, it performed stably with a removal of 90% of the ...

May 18, 2016

By IWA Publishing

Decolorization and degradation of cationic red X-GRL by upflow blanket filter

An anaerobic upflow blanket filter (UBF) was employed for the treatment of dye wastewater containing cationic red X-GRL (X-GRL) in this study. The bacterial community in the UBF at its stable state was investigated by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). The results showed that all color and the majority of chemical oxygen demand (COD) ...

Feb. 18, 2013

By IWA Publishing

Enhanced Lipid Degredation in Upflow Aanerobic Sludge Blanket Reactor by Inetergration with Acidogenic Reactor

INTRODUCTIONLipids are the major organic component in wastewaters from many industries including dairy product, edible oil refinery, slaughterhouse and wool scouring (Pereira et al., 2001). By anaerobic bacteria, lipids can be degraded via hydrolysis and β-oxidation to acetate and hydrogen, which in turn are converted to methane. A large amount of CH4 can be produced from lipids because they ...

Jan. 1, 2006

By Water Environment Federation (WEF)

Combination of up-flow anaerobic sludge blanket reactor and a novel cascade sponge reactor for sewage treatment

Performance of the combined process of up-flow anaerobic sludge blanket (UASB) reactor and cascade sponge reactor (CSR) for sewage treatment was studied. UASB-CSR system was operated at HRTs of 24 h, 16 h, and 8 h at an average wastewater temperature of 29°C. It comprises of the most efficient combined process not only for CODT (98.9%), BODT (98.5%), TSS (99.3%), total nitrogen (89.1%), total ...

Mar. 1, 2011

By IWA Publishing

Treatment of natural rubber processing wastewater using a combination system of a two-stage up-flow anaerobic sludge blanket and down-flow hanging sponge system

A pilot-scale experiment of natural rubber processing wastewater treatment was conducted using a combination system consisting of a two-stage up-flow anaerobic sludge blanket (UASB) and a down-flow hanging sponge (DHS) reactor for more than 10 months. The system achieved a chemical oxygen demand (COD) removal efficiency of 95.7% ± 1.3% at an organic loading rate of 0.8 kgCOD/(m3.d). Bacterial ...

Jan. 18, 2016

By IWA Publishing

Artificial intelligence based model for optimization of COD removal efficiency of an up-flow anaerobic sludge blanket reactor in the saline wastewater treatment

The complex non-linear behavior presented in the biological treatment of wastewater requires an accurate model to predict the system performance. This study evaluates the effectiveness of an artificial intelligence (AI) model, based on the combination of artificial neural networks (ANNs) and genetic algorithms (GAs), to find the optimum performance of an up-flow anaerobic sludge blanket ...

Jan. 10, 2017

By IWA Publishing

Sugarcane molasses-based bio-ethanol wastewater treatment by two-phase multi-staged up-flow anaerobic sludge blanket (UASB) combination with up-flow UASB and down-flow hanging sponge

This study was designed to evaluate a treatment system for high strength wastewater (vinasse) from a sugarcane molasses-based bio-ethanol plant in Thailand. A laboratory-scale two-phase treatment system composed of a sulfate reducing (SR) tank and multi-staged up-flow anaerobic sludge blanket (MS-UASB) reactor was used as the pre-treatment unit. Conventional UASB and down-flow hanging sponge ...

Mar. 19, 2014

By IWA Publishing

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