Simultaneous aerobic-anaerobic biodegradation of an industrial effluent of polymeric resins with high phenol concentration at different organic loading rates in a non-conventional UASB type reactor

This study was performed to evaluate the efficiency of tapioca processing wastewater treatment using aerobic biofilter with variety of biofilter media: coir, coal, PVC plastic and Bio - Ball BB15 plastic. Research results in the lab demonstrated all four aerobic biofilter models processed can treated completely N and COD which COD reached 90-98% and N reached 61-92%, respectively, at the organic loading rates in range of 0.5, 1, 1.5 and 2 kgCOD/m3.day. The results identified coir filter was the best in four researched materials with removal COD and specific substract utilization rate can reach 98%, and 0.6 kg COD/kgVSS.day. Research results open the new prospects for the application of the cheap materials, available for wastewater treatment.

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Stabilization of Organic Carbon and Nitrogen in Consolidating Benthal Deposits

Water Science & Technology ◽

10.2166/wst.1985.0191 ◽

1985 ◽

Vol 17 (6-7) ◽

pp. 929-940 ◽

Cited By ~ 1

Author(s):

C. W. Bryant ◽

L. G. Rich

Keyword(s):

Organic Carbon ◽

Model Verification ◽

Volatile Acid ◽

Free Energies ◽

Organic Loading ◽

Carbon And Nitrogen ◽

Loading Rates ◽

Degradation Reactions ◽

The Individual ◽

Organic Deposits

The objective of this research was to develop and validate a predictive model of the benthal stabilization of organic carbon and nitrogen in deposits of waste activated sludge solids formed at the bottom of an aerated water column, under conditions of continual deposition. A benthal model was developed from a one-dimensional, generalized transport equation and a set of first-order biological reactions. For model verification, depth profiles of the major interstitial carbon and nitrogen components were measured from a set of deposits formed in the laboratory at 20°C and a controlled loading rate. The observed sequence of volatile acid utilization in each benthal deposit was that which would be predicted by the Gibbs free energies of the individual degradation reactions and would be controlled by the reduction in interstitial hydrogen partial pressure with time. Biodegradable solids were solubilized rapidly during the first three weeks of benthal retention, but subsequent solubilization occurred much more slowly. The benthal simulation effectively predicted the dynamics of consolidating, organic deposits. Simulation of organic loading rates up to 250 g BVSS/(m2 day) indicated that the stabilization capacity of benthal deposits was far above the range of organic loading rates currently used in lagoon design.

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The effect of static mixer on the properties and performance of aerobic granules under different organic loading rates in treating synthetic textile wastewater

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/682/1/012032 ◽

2021 ◽

Vol 682 (1) ◽

pp. 012032

Author(s):

S Suryati ◽

AR Abdul Syukor ◽

A Azmi ◽

M Khalida

Keyword(s):

Textile Wastewater ◽

Aerobic Granules ◽

Static Mixer ◽

Organic Loading ◽

Loading Rates ◽

And Performance

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Wastewater fermentation and nutrient removal in sequencing batch reactors

Water Science & Technology ◽

10.2166/wst.1998.0061 ◽

1998 ◽

Vol 38 (1) ◽

pp. 255-264 ◽

Cited By ~ 4

Author(s):

Germán Cuevas-Rodríguez ◽

Óscar González-Barceló ◽

Simón González-Martínez

Keyword(s):

Activated Sludge ◽

Volatile Fatty Acids ◽

Organic Load ◽

Batch Reactors ◽

Sequencing Batch Reactors ◽

Organic Loading ◽

Nitrogen And Phosphorus ◽

Loading Rates ◽

Average Value ◽

Experimental Runs

This research project was conducted to analyze the performance of a SBR reactor when being fed with anaerobically fermented wastewater. Important was to determine the capacity of the system to remove nitrogen and phosphorus. Two SBR reactors, each one with a volume of 980 liters, were used: one used as fermenter and the other as activated sludge SBR. Using 8-hour cycles, the reactors were operated and studied during 269 days. The fermenter produced an effluent with an average value of 223±24 mg/l of volatile fatty acids. The activated sludge SBR was tested under 3 organic loading rates of 0.13, 0.25, and 0.35 kgCODtotal/kgTSS·d. For the three tested organic loading rates, PO4-P concentrations under 1.1 mg/l and COD between 37 and 38 mg/l were consistently achieved. Exceptionally high NH4-N influent values were measured during the time of the experimentation with the organic load of 0.25 kgCODtotal/kgTSS·d, not reaching in this case full nitrification. Denitrification was observed during the fill phase in every cycle. SVI values between 40 and 70 were determined during the experimental runs.

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