Start-up alternatives and performance of an UASB pilot plant treating diluted municipal wastewater at low temperature

Álvarez, J.A.; Ruíz, I.; Gómez, Marcel; Presas, J.; Soto, M.

doi:10.1016/j.biortech.2005.07.033

Cited by 77 publications

(37 citation statements)

References 11 publications

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“…58% total COD removal was reached at a temperature of 15 ºC and HRT of 11 h for 120 days by Alvarez et al (2006). Kalogo et al (2001a) and Kalogo and M'Bassiguie (2001b) achieved a removal efficiency of up to 65% of COD in a self-inoculated reactor treating domestic wastewater.…”

Section: Brazilian Journal Of Chemical Engineeringmentioning

confidence: 96%

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: Brazilian Journal Of Chemical Engineeringmentioning

confidence: 96%

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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“…Zhang et al, 2013;Zheng et al, 2012). The great complexity and instability of actual wastewater usually leads to much lower nitrogen removal efficiency than synthetic wastewater (Alvarez et al, 2006), which limits its application in actual wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Impact resistance of different factors on ammonia removal by heterotrophic nitrification–aerobic denitrification bacterium Aeromonas sp. HN-02

Chen

Wang

Feng

et al. 2014

Bioresource Technology

142

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“…Nitrogen (as nitrate and urea) showed a positive influence on the process and should be considered during anaerobic digestion of tannery waste to improve biogas production. Also, temperature influence and type of reactors should be considered in the process since the tests were performed at 25 ± 2°C and batch conditions (Alvarez et al 2006;Zupančič and Jemec 2010). In addition, it may be possible to retain the effluent from this tannery digestion for fertilization purposes since the digest rate consisted of nutrient sources for crop production.…”

Section: Resultsmentioning

confidence: 99%

The effect of electron acceptors on biogas production from tannery sludge of a Mexican wastewater plant

Ruiz-Aguilar

Lovanh

Camarena-Aguilar

et al. 2015

Int. J. Environ. Sci. Technol.

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Effluents from the leather processing generally are discharged into rivers or are used to irrigate farmland. The biogas production from the digestion of sludge produced could be used as alternative sources for energy and power generation. A study was carried out to examine the effects of various electron acceptor amendments on biogas production from Mexican tannery sludge. Two bench scale experiments were performed: The first experiment used different electron acceptors (nitrate, iron and sulfate) and three different levels for each variable (4.5, 9.0 and 13.5 mg/mL); in the second only urea was used as a nitrogen source with three carbon/nitrogen ratios (6.0, 8.0 and 11). It was found that the reactors with nitrate as electron acceptor (4.5 mg/mL) generated the most biogas (200 mL of biogas accumulated in 25 days). Similarly, the reactors with the lower ratio of carbon/nitrogen (6.0) produced larger biogas production (131.50 ± 19.1 mL of biogas) in a shorter period of time (9 days). The results also showed that the addition of glucose did not significantly influence the production of biogas.

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Start-up alternatives and performance of an UASB pilot plant treating diluted municipal wastewater at low temperature

Cited by 77 publications

References 11 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

Impact resistance of different factors on ammonia removal by heterotrophic nitrification–aerobic denitrification bacterium Aeromonas sp. HN-02

The effect of electron acceptors on biogas production from tannery sludge of a Mexican wastewater plant

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