Organic removal and microbiological features of UASB-reactor under various organic loading rates

Kalyuzhnyi, S.; Sklyar, V.; Davlyatshina, M.A.; Parshina, Sofiya N.; Simankova, M. V.; Kostrikina, N. A.; Ножевникова, А. Н.

doi:10.1016/0960-8524(95)00100-x

Cited by 54 publications

(29 citation statements)

References 6 publications

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“…An anaerobic process includes principally three metabolic phases, i.e., hydrolysis, acidogenesis and methanogenesis (Cohen et al, 1982). In another study, glucose with potassium acetate mixture as organic substrate was used to increase the number of Methanosarcina and other bacteria distributed within the granules and resulted in more than 97% COD removal efficiency (Kalyuzhnyi et al, 1996). Microand macronutrient supplementation were found to be very effective in reducing the startup period and achieving high COD removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

UASB reactor startup for the treatment of municipal wastewater followed by advanced oxidation process

Bhatti

Maqbool

Malik

et al. 2014

Braz. J. Chem. Eng.

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-The present study was done to shorten the start-up time of up-flow anaerobic sludge blanket (UASB) reactor. Two different nutrients were used during the UASB start-up period, which was designed to decrease the hydraulic retention time (HRT) from 48 to 24 and 12 to 6 hrs at average temperatures of 25-34 ºC. In the first stage, start-up was with glucose for 14 days and then the reactor was also fed with macro-and micronutrients as a synthetic nutrient influent (SNI) from 15 to 45 days as the second stage. For the control, a second reactor was kept on glucose feeding from day 1 to 45. The removal efficiencies of the chemical oxygen demand (COD) were 80% and 98% on the 6 th and 32 nd day of the first and second stage, respectively. The maximum substrate removal rate of 0.08 mg COD mg -1 VSS d -1 was observed for glucose and synthetic nutrient influent (SNI) on the 8 th and 40 th days, respectively. When the reactor reached the maximum COD removal efficiency it was then shifted to municipal wastewater (MWW) mixed with industrial wastewater. The HRT was reduced gradually with a one week gap while treating MWW. For further cleaning, the UASB effluent was treated with 40% waste hydrogen peroxide. The whole integrated treatment process was successful to reduce the COD by 99%, total suspended solids (TSS) by 73%, total nitrogen (TN) by 84% and turbidity by 67%.

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Section: Introductionmentioning

confidence: 99%

UASB reactor startup for the treatment of municipal wastewater followed by advanced oxidation process

Bhatti

Maqbool

Malik

et al. 2014

Braz. J. Chem. Eng.

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“…The authors showed that the predominant microbial biomass was Methanosaeta. However, increasing the OLR led to a substantial increase of Methanosarcina in the granules (Kalyuzhnyi et al, 1996). The increase of Methanosarcina in the studied synthetic wastewater (toxin-free) due to increasing OLR is explained by the low affinity of these methanogens for acetate in comparison with Methanosaeta.…”

Section: Organic Loading Rate (Olr)mentioning

confidence: 89%

Biogas Production from Anaerobic Treatment of Agro-Industrial Wastewater

Olvera¹,

López-López²

2012

Biogas

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“…But also applicable to low strength wastewater (COD > 300 and <1000 mg/L) [25,85] Reaction kinetic Decay rate = 0.06 d…”

Section: Introductionmentioning

confidence: 99%

Review of Upflow Anaerobic Sludge Blanket Reactor Technology: Effect of Different Parameters and Developments for Domestic Wastewater Treatment

Daud

Rizvi

Akram

et al. 2018

Journal of Chemistry

108

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The upflow anaerobic sludge blanket (UASB) reactor has been recognized as an important wastewater treatment technology among anaerobic treatment methods. The objective of this study was to perform literature review on the treatment of domestic sewage using the UASB reactor as the core component and identifying future areas of research. The merits of anaerobic and aerobic bioreactors are highlighted and other sewage treatment technologies are compared with UASB on the basis of performance, resource recovery potential, and cost. The comparison supports UASB as a suitable option on the basis of performance, green energy generation, minimal space requirement, and low capital, operation, and maintenance costs. The main process parameters such as temperature, hydraulic retention time (HRT), organic loading rate (OLR), pH, granulation, and mixing and their effects on the performance of UASB reactor and hydrogen production are presented for achieving optimal results. Feasible posttreatment steps are also identified for effective discharge and/or reuse of treated water.

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Organic removal and microbiological features of UASB-reactor under various organic loading rates

Cited by 54 publications

References 6 publications

UASB reactor startup for the treatment of municipal wastewater followed by advanced oxidation process

UASB reactor startup for the treatment of municipal wastewater followed by advanced oxidation process

Biogas Production from Anaerobic Treatment of Agro-Industrial Wastewater

Review of Upflow Anaerobic Sludge Blanket Reactor Technology: Effect of Different Parameters and Developments for Domestic Wastewater Treatment

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