Rapidly Start-Up and Performance of the EGSB Reactor Treating Actual Coking Wastewater when Seeded with Digestion Sludge

To accomplish rapidly the granulation process of digestion sludge for the treatment of actual coking wastewater and meanwhile achieve high COD, phenol, SCN- and CN- removal, the EGSB reactor was employed with two operation stages. StageI: Granular sludge was formed from digestion sludge using brewery wastewater as substrate in the anaerobic way (meanwhile adding little granules, which were 1/7 of the total biomass). StageII: Granular sludge was acclimatized with the actual coking wastewater through continuous micro-oxygenation way. The experimental results showed that the granular sludge could quickly form in 10d in the EGSB reactor seeded with digestion sludge and little loose granules. It took only about 6 months for the successful micro-aerobic acclimating of the granular sludge by the actual coking wastewater. The removal efficiencies of COD, phenol, SCN- and CN- were 72.9, 99.5, 95.7 and 97.5%, respectively, at 12.1h hydraulic retention time (HRT) and for 631-922, 12.8-37.7, 66.7-232.7 and 0.3-57.8mg.L-1 influent COD, phenol, SCN- and CN- concentration.

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Effect of salinity variation on the autotrophic kinetics of the start-up of a membrane bioreactor and hybrid moving bed biofilm reactor-membrane bioreactor at low hydraulic retention time

Water Science & Technology ◽

10.2166/wst.2017.585 ◽

2017 ◽

Vol 77 (3) ◽

pp. 714-720 ◽

Cited By ~ 1

Author(s):

J. C. Leyva-Díaz ◽

A. Rodríguez-Sánchez ◽

J. González-López ◽

J. M. Poyatos

Keyword(s):

Retention Time ◽

Membrane Bioreactor ◽

Municipal Wastewater ◽

Hydraulic Retention Time ◽

Biofilm Reactor ◽

Total Biomass ◽

Municipal Wastewater Treatment ◽

Moving Bed Biofilm Reactor ◽

Moving Bed ◽

Start Up

Abstract A membrane bioreactor (MBR) and a hybrid moving bed biofilm reactor-membrane bioreactor (hybrid MBBR-MBR) for municipal wastewater treatment were studied to determine the effect of salinity on nitrogen removal and autotrophic kinetics. The biological systems were analyzed during the start-up phase with a hydraulic retention time (HRT) of 6 h, total biomass concentration of 2,500 mg L−1 in the steady state, and electric conductivities of 1.05 mS cm−1 for MBR and hybrid MBBR-MBR working under regular salinity and conductivity variations of 1.2–6.5 mS cm−1 for MBR and hybrid MBBR-MBR operating at variable salinity. The variable salinity affected the autotrophic biomass, which caused a reduction of the nitrogen degradation rate, an increase of time to remove ammonium from municipal wastewater and longer duration of the start-up phase for the MBR and hybrid MBBR-MBR.

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Characteristics and performance of aerobic granular sludge treating rubber wastewater at different hydraulic retention time

Bioresource Technology ◽

10.1016/j.biortech.2014.03.047 ◽

2014 ◽

Vol 161 ◽

pp. 155-161 ◽

Cited By ~ 29

Author(s):

Noor Hasyimah Rosman ◽

Aznah Nor Anuar ◽

Shreeshivadasan Chelliapan ◽

Mohd Fadhil Md Din ◽

Zaini Ujang

Keyword(s):

Retention Time ◽

Hydraulic Retention Time ◽

Granular Sludge ◽

Aerobic Granular Sludge ◽

And Performance ◽

Rubber Wastewater

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Structure of nitrogen-converting communities induced by hydraulic retention time and COD/N ratio in constantly aerated granular sludge reactors treating digester supernatant

Bioresource Technology ◽

10.1016/j.biortech.2013.11.099 ◽

2014 ◽

Vol 154 ◽

pp. 162-170 ◽

Cited By ~ 26

Author(s):

Agnieszka Cydzik-Kwiatkowska ◽

Paulina Rusanowska ◽

Magdalena Zielińska ◽

Katarzyna Bernat ◽

Irena Wojnowska-Baryła

Keyword(s):

Retention Time ◽

Hydraulic Retention Time ◽

Granular Sludge

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The effect of hydraulic retention time on granular sludge biomass in treating textile wastewater

Water Research ◽

10.1016/j.watres.2011.05.012 ◽

2011 ◽

Vol 45 (16) ◽

pp. 4711-4721 ◽

Cited By ~ 59

Author(s):

Khalida Muda ◽

Azmi Aris ◽

Mohd Razman Salim ◽

Zaharah Ibrahim ◽

Mark C.M. van Loosdrecht ◽

...

Keyword(s):

Retention Time ◽

Hydraulic Retention Time ◽

Granular Sludge ◽

Textile Wastewater

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Start-Up Procedures and Analysis of Microbial Segregation in HABR Using Synthetic Brewery Wastewater

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.113-116.1176 ◽

2010 ◽

Vol 113-116 ◽

pp. 1176-1181

Author(s):

Hui Ting Li ◽

Yong Feng Li ◽

Yan Jiao Gao ◽

Shu Ai Wang

Keyword(s):

Organic Loading ◽

Process Stability ◽

Treatment Efficiency ◽

Brewery Wastewater ◽

Loading Rates ◽

Start Up ◽

Anaerobic Consortium ◽

Removal Efficiencies ◽

Community Segregation ◽

High Treatment

A laboratory-scale hybrid anaerobic baffled reactor (HABR) with five compartments using synthetic brewery wastewater as organic loading rates (OLRs) was investigated for the start-up performance and the effects of microbial community segregation on reactor start-up. Experimental results demonstrated that it was found that the COD removal efficiencies were 92~96% at 1.2 kgCOD/(m3•d) feeding over a period of 33 d, after which the reactors then successfully started. The highest percentage of CO2 in biogas was found in Compartment 1, thereafter decreased from Compartment 2 to Compartment 5 which corresponded to the increased of the percentage of CH4. It indicated that the proper anaerobic consortium in each separate compartment was developed along with specific environmental conditions, which offers the explanations that high treatment efficiency of HABR accompanied by high process stability and low operational requirements in start-up period.

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Start-up of UASB reactors treating municipal wastewater and effect of temperature/sludge age and hydraulic retention time (HRT) on its performance

Arabian Journal of Chemistry ◽

10.1016/j.arabjc.2013.12.016 ◽

2015 ◽

Vol 8 (6) ◽

pp. 780-786 ◽

Cited By ~ 51

Author(s):

Hina Rizvi ◽

Nasir Ahmad ◽

Farhat Abbas ◽

Iftikhar Hussain Bukhari ◽

Abdullah Yasar ◽

...

Keyword(s):

Retention Time ◽

Municipal Wastewater ◽

Hydraulic Retention Time ◽

Effect Of Temperature ◽

Start Up ◽

Uasb Reactors

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Impact of Hydraulic Retention Time at Constant Organic Loading Rate in a Two-Stage Expanded Granular Sludge Bed Reactor

Environmental Engineering Science ◽

10.1089/ees.2013.0501 ◽

2014 ◽

Vol 31 (6) ◽

pp. 317-323 ◽

Cited By ~ 8

Author(s):

Mahyar Ghorbanian ◽

Robert M. Lupitskyy ◽

Jagannadh V. Satyavolu ◽

R. Eric Berson

Keyword(s):

Retention Time ◽

Hydraulic Retention Time ◽

Loading Rate ◽

Granular Sludge ◽

Organic Loading Rate ◽

Organic Loading ◽

Two Stage

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Effect of effluent circulation and hydraulic retention time (HRT) on the performance of a modified anaerobic baffled reactor (MABR) during start-up period

Desalination and Water Treatment ◽

10.1080/19443994.2015.1094676 ◽

2015 ◽

Vol 57 (40) ◽

pp. 18597-18605 ◽

Cited By ~ 1

Author(s):

Maizatul Asnie Mohd Aris ◽

Shreeshivadasan Chelliapan ◽

Mohd Fadhil Md. Din ◽

Aznah Nor Anwar ◽

Rafidah Shahperi ◽

...

Keyword(s):

Retention Time ◽

Hydraulic Retention Time ◽

Anaerobic Baffled Reactor ◽

Start Up

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Evaluation of sequential aerated treatment of wastewater from hardboard mill

Brazilian Archives of Biology and Technology ◽

10.1590/s1516-89131998000300002 ◽

1998 ◽

Vol 41 (3) ◽

pp. 284-287

Author(s):

S. Videla ◽

C. Isaacs ◽

M. Cristina Diez

Keyword(s):

Retention Time ◽

Hydraulic Retention Time ◽

Organic Content ◽

Bench Scale ◽

Sequential System ◽

Start Up ◽

High Organic Content

Wastewater from a hardboard mill characterized by a high organic content (15-30 g/L COD) was studied in a bench scale sequential aerated system in order to define a start up strategy. Inlet COD concentration varied from 0.5 to 25 g/L and the hydraulic retention time was maintained at 5 days. The sequential system proposed could reduce BOD, COD, TSS and phenol over 90% except when the inlet COD concentration was lower than 25 g/L.

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Influence of Hydraulic Retention Time on Start-Up and Process Stability of Polyurethane Carrier Reactions

Water Science & Technology ◽

10.2166/wst.1992.0015 ◽

1992 ◽

Vol 25 (1) ◽

pp. 99-106 ◽

Cited By ~ 6

Author(s):

M. S. T. Rubindamayugi ◽

H. J. M. Op Den Camp ◽

H. J. Lubberding ◽

H. J. Gijzen ◽

G. D. Vogels

Keyword(s):

Retention Time ◽

Volatile Fatty Acids ◽

Hydraulic Retention Time ◽

Organic Loading Rate ◽

Process Stability ◽

Reactor Performance ◽

Steady State Condition ◽

Start Up ◽

Reactor Operating ◽

Startup Period

Influence of hydraulic retention time (HRT) on start-up of Polyurethane Carrier Reactors treating Volatile Fatty Acids (VFA) based wastewater, at constant organic loading rate (OLR) was investigated. OLR was increased stepwise after start-up to evaluate the influence of HRT on process stability. Four parallel experiements were conducted at HRTs of 48, 24, 18 and 12 hours. Results indicate an influence of HRT on duration of start-up period, and process stability after start-up. The reactor operating at HRT of 24 hours required only a relatively stort start-up period and showed higher process stability under steady-state condition. Analysis of individual VFA degradation indicated that butyrate and propionate consuming acetogenic bacteria increased in sigmoid fashion during start-up. Changes in acetate degradation do not show the true increase of acetoclastic population. Instead they reflect concomitant activity of VFA catabolizing acetogens and aceloclastic methanogens . Immobilized biomass increased exponentially during the first three weeks of start-up. The differences in start-up periods between reactors was probably due to differences in quality and activity of biomass immobilized at different HRTs. The HRT of 24 hours was most optimal to obtain stable reactor performance within a short startup period.

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