Parameters affecting protein production from brewery waste water in a multi-channel laboratory-scale activated sludge system

1983 ◽  
Vol 18 (1) ◽  
pp. 52-59 ◽  
Author(s):  
L. Vriens ◽  
E. Eynde ◽  
H. Verachtert
Keyword(s):  
Waste Water ◽  
Activated Sludge ◽  
Protein Production ◽  
Laboratory Scale ◽  
Activated Sludge System

Removal and fate of estrogens in an anaerobic-anoxic-oxic activated sludge system

2011 ◽  
Vol 63 (1) ◽  
pp. 51-56 ◽  
Author(s):  
Y. M. Li ◽  
Q. L. Zeng ◽  
S. J. Yang
Keyword(s):  
Activated Sludge ◽  
Removal Efficiency ◽  
Laboratory Scale ◽  
Dominant Mechanism ◽  
Waste Sludge ◽  
Activated Sludge System ◽  
17Β Estradiol ◽  
Solid Phases ◽  
Final Effluent

Laboratory-scale experiments were conducted to investigate the removal and fate of estrogens 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in an anaerobic-anoxic-oxic (AAO) activated sludge system. Estrogen concentrations in the aqueous and solid phases in each reactor of AAO system were analyzed separately. E2 was not detected in the final effluent. The anaerobic, anoxic and oxic reactors accounted for 71%, 7% and 22% of the overall E2 removal, respectively. The overall EE2 removal efficiency was about 80%, and the anaerobic, anoxic and oxic reactors were responsible for 44%, 8% and 48% of the overall EE2 removal, respectively. In anaerobic unit, sorption was the dominant mechanism for the removal of E2 and EE2. While E2 was degraded in all the three units of the AAO system, EE2 was only degraded in the anoxic and aerobic units. Biodegradation is important for the fate of E2 compared to sorption. Of the total influent E2 in the AAO system, 99.99% was biodegraded and 0.01% remained in the waste sludge. Nevertheless, both sorption and biodegradation play important roles in the removal of EE2. Of the total influent EE2, 79.1% was degraded by activated sludge, 19.9% was discharged in the effluent and 1% remained in the waste sludge.

Biochemical Changes Associated with Luxury Phosphate Uptake in a Modified Phoredox Activated Sludge System

1983 ◽  
Vol 15 (3-4) ◽  
pp. 105-115 ◽  
Author(s):  
D J J Potgieter ◽  
B W Evans
Keyword(s):  
Activated Sludge ◽  
Biochemical Parameters ◽  
Phosphate Uptake ◽  
Biochemical Changes ◽  
Laboratory Scale ◽  
Anaerobic Conditions ◽  
Phosphate Release ◽  
Activated Sludge System

Several chemical and biochemical parameters were monitored for in a laboratory scale modified Phoredox activated sludge system fed with settled sewage. The influence of several substrates and pH on phosphate release under anaerobic conditions was investigated. The significance of some chemical and biochemical parameters in relation to luxury phosphate uptake is discussed and related to a concept of imbalanced provision of intermediates and other nutrients as the primary cause of enhanced phosphate uptake.

DESIGN PLANNING WASTEWATER TREATMENT PLANT OF NATA DE COCO INDUSTRY WITH THE ACTIVATED SLUDGE PROCESS

2016 ◽  
Vol 9 (2) ◽  
Author(s):  
Dinda Rita K. Hartaja ◽  
Imam Setiadi
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Activated Sludge ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Appropriate Technology ◽  
Waste Water Treatment Plant ◽  
Activated Sludge Process ◽  
High Level

Generally, wastewater of nata de coco industry contains suspended solids and COD were high, ranging from 90,000 mg / l. The high level of of the wastewater pollutants, resulting in nata de coco industry can not be directly disposed of its wastewater into the environment agency. Appropriate technology required in order to process the waste water so that the treated water can meet the environmental quality standards that are allowed. Designing the waste water treatment plant that is suitable and efficient for treating industrial wastewater nata de coco is the activated sludge process. Wastewater treatment using activated sludge process of conventional (standard) generally consists of initial sedimentation, aeration and final sedimentation.Keywords : Activated Sludge, Design, IPAL

Oxidation Ditch

2018 ◽  
Author(s):  
Gede H Cahyana
Keyword(s):  
Activated Sludge ◽  
Special Form ◽  
Oxidation Ditch ◽  
End Point ◽  
Activated Sludge System

As a part of activated sludge system, oxidation ditch has a special form like a canal without end point. Rotor is used to diffuse oxygen from air to the water.

Parameters for Measuring the Activity and Viability of Activated Sludge

1974 ◽  
Vol 9 (1) ◽  
pp. 235-249 ◽  
Author(s):  
S.G. Nutt ◽  
K.L. Murphy
Keyword(s):  
Organic Carbon ◽  
Activated Sludge ◽  
Biological System ◽  
Analytical Methods ◽  
Heterogeneous System ◽  
Removal Rate ◽  
Bacterial Species ◽  
Atp Content ◽  
Culture Studies ◽  
Activated Sludge System

Abstract Conventional wastewater parameters are accepted as inadequate estimates of the condition of activated sludge but numerous other indices have been suggested as specific measurements of the activity and viability of the biomass. Literature in the related fields of microbiology and biochemistry were reviewed in order to select the most appropriate activity parameters for application to a heterogeneous biological material. Modified analytical methods were applied to a well-controlled biological system containing a single predominant bacterial species to evaluate the relative merit of each as an indicator of viability and activity. The potential of each parameter in a complex heterogeneous system was determined by monitoring each index in a bench activated sludge system. The predominant culture studies indicated that the ATP content of the biomass and the dehydrogenase activity were potential indicators of cell viability in a simple system. However, in the complex activated sludge system, only the ATP content showed significant correlation to the organic carbon removal rate.

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