Granular Activated Carbon and Preozonated Granular Activated Carbon Treatment for Biologically and Physically-Chemically Treated Wastewater Effluents

1982 ◽  
Vol 14 (6-7) ◽  
pp. 619-627
Author(s):  
A Netzer ◽  
J L McNutt
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Pilot Plant ◽  
Granular Activated Carbon ◽  
Treated Wastewater ◽  
Treatment Efficiency ◽  
Treatment Facility ◽  
Physical Chemical ◽  
Carbon Treatment ◽  
Wastewater Effluents

The Duck Creek Wastewater Treatment Plant is a combined municipal-industrial wastewater treatment facility serving a municipal population of over 200,000 and an industrial community of over 600 various light industries. This 30 MGD treatment facility operates in a split-stream mode, with 7.5 MGD treated by biological processes and 22.5 MGD treated by physical-chemical processes. Final treatment for both systems is supposed to consist of granular activated carbon treatment and chlorine disinfection. Problems in operation and implementation of the granular activated carbon systems for the combined biological and physical-chemical treatment effluents prompted The University of Texas at Dallas to design and construct a pilot plant facility composed of 5 pilot plant systems. This facility provides for evaluation of granular activated carbon (GAC) treatment and preozonated granular activated carbon (POGAC) treatment for biologically, physically-chemically, and blended (biologically and physically-chemically) treated wastewater effluents simultaneously. The UTD-Duck Creek Pilot Plant Facility has been operating since November, 1979, demonstrating the improved operation and treatment efficiency of preozonated granular activated carbon treatment for biologically, physically-chemically, and blended wastewater effluents. In addition to improved treatment efficiency demonstrated by the preozonated granular activated carbon systems, average operational life prior to bed exhaustion was extended from an average 70 days for GAC to over 300 operational days for POGAC.

Granular activated carbon (GAC) adsorption in tertiary wastewater treatment: experiments and models

2003 ◽  
Vol 47 (1) ◽  
pp. 113-120 ◽  
Author(s):  
D.S. Chaudhary ◽  
S. Vigneswaran ◽  
V. Jegatheesan ◽  
H.H. Ngo ◽  
H. Moon ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Fixed Bed ◽  
Granular Activated Carbon ◽  
Developed Countries ◽  
Synthetic Wastewater ◽  
Batch Adsorption ◽  
Model Parameters ◽  
Wide Range ◽  
Gac Adsorption

Wastewater treatment has always been a major concern in the developed countries. Over the last few decades, activated carbon adsorption has gained importance as an alternative tertiary wastewater treatment and purification process. In this study, granular activated carbon (GAC) adsorption was evaluated in terms of total organic carbon (TOC) removal from low strength synthetic wastewater. This paper provides details on adsorption experiments conducted on synthetic wastewater to develop suitable adsorption isotherms. Although the inorganics used in the synthetic wastewater solution had an overall unfavourable effect on adsorption of organics, the GAC adsorption system was found to be effective in removing TOC from the wastewater. This study showed that equation of state (EOS) theory was able to fit the adsorption isotherm results more precisely than the most commonly used Freundlich isotherm. Biodegradation of the organics with time was the most crucial and important aspect of the system and it was taken into account in determining the isotherm parameters. Initial organic concentration of the wastewater was the determining factor of the model parameters, and hence the isotherm parameters were determined covering a wide range of initial organic concentrations of the wastewater. As such, the isotherm parameters derived using the EOS theory could predict the batch adsorption and fixed bed adsorption results of the multi-component system successfully. The isotherm parameters showed a significant effect on the determination of the mass transfer coefficients in batch and fixed bed systems.

The occurrence and fate of phenolic compounds in a coking wastewater treatment plant

2013 ◽  
Vol 68 (2) ◽  
pp. 433-440 ◽  
Author(s):  
Wanhui Zhang ◽  
Chaohai Wei ◽  
Chunhua Feng ◽  
Yuan Ren ◽  
Yun Hu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Phenolic Compounds ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Coking Wastewater ◽  
Sludge Sample ◽  
Physical Chemical ◽  
Mass Flows ◽  
Dewatered Sludge

The occurrence of 14 phenolic compounds (PCs) was assessed in the raw, treated wastewater, dewatered sludge and gas samples from a coking wastewater treatment plant (WWTP) in China. It was found that 3-cresol was the dominant compound in the raw coking wastewater with a concentration of 183 mg L−1, and that chlorophenols and nitrophenols were in the level of μg L−1. Phenol was the dominant compound in the gas samples, while 2,4,6-trichlorophenol predominated in the dewatered sludge sample. The anaerobic and aerobic tanks played key roles in the elimination of chlorophenols and phenols, respectively. Analysis of daily mass flows of PCs in WWTP showed that 89–98% of phenols and 83–89% of nitrophenols were biodegraded, and that 44–69% of chlorophenols were adsorbed to sludge, indicating that the fate of PCs was highly influenced by their biodegradability and physical–chemical property.

Granular Activated Carbon Treatment May Result in Higher Predicted Genotoxicity in the Presence of Bromide

2016 ◽  
Vol 50 (17) ◽  
pp. 9583-9591 ◽  
Author(s):  
Stuart W. Krasner ◽  
Tiffany Chih Fen Lee ◽  
Paul Westerhoff ◽  
Natalia Fischer ◽  
David Hanigan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Carbon Treatment
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