Removal of trace organic substances from river bank filtrate – performance study of RO and NF membranes

2008 ◽  
Vol 8 (1) ◽  
pp. 85-92 ◽  
Author(s):  
A. Loi-Brügger ◽  
S. Panglisch ◽  
G. Hoffmann ◽  
P. Buchta ◽  
R. Gimbel ◽  
...  
Keyword(s):  
Project Planning ◽  
River Rhine ◽  
Organic Substances ◽  
Performance Study ◽  
Activated Carbon Adsorption ◽  
Pilot Studies ◽  
River Bank ◽  
Organics Removal ◽  
Trace Organics ◽  
Trace Organic

Producing drinking water from raw waters like river bank filtrate nowadays requires the safe removal of ever new emerging organic substances. At present, in Germany perfluorinated organic compounds are heavily discussed. When it comes to trace organics removal, reverse osmosis (RO) and nanofiltration (NF) are alternatives to conventional bank filtrate treatment technologies like ozonation and activated carbon adsorption. However, the trace organics removal capabilities of dense membranes are still under investigation. Questions about concentrate disposal strategies are still open. The paper presents results from lab-scale and pilot studies which were conducted for the project planning of a 1,100 m3/h NF plant treating river Rhine bank filtrate. Membranes from loose NF to dense RO were investigated spiking the raw waters with trace organic substances which usually pass the soil passage and to some extent even the conventional treatment process. The results showed high retention capabilities of the more dense membranes, even under ageing conditions.

Trace Organics Removal by Advanced Waste Treatment

1979 ◽  
Vol 105 (4) ◽  
pp. 675-693
Author(s):  
Martin Reinhard ◽  
Dave G. Argo ◽  
Perry L. McCarty ◽  
Carla J. Dolce
Keyword(s):  
Waste Treatment ◽  
Organics Removal ◽  
Trace Organics

Production of high quality water for reuse purposes: the West Basin experience

2003 ◽  
Vol 3 (3) ◽  
pp. 167-175 ◽  
Author(s):  
V. Lazarova ◽  
P. Sheilds ◽  
B. Levine ◽  
P. Savoye ◽  
D. Hranisavljevic ◽  
...  
Keyword(s):  
Water Reuse ◽  
High Performance ◽  
Membrane Filtration ◽  
Salt Content ◽  
The West ◽  
Pilot Studies ◽  
Lime Pretreatment ◽  
Trace Organics ◽  
Main Challenge ◽  
West Basin

Water reuse is becoming an essential factor for developing sound water and environment managaement policies, The main challenge for the operators of water reuse facilities is to increase the cost-efficiency and reliability of water reuse systems. To achieve this objective, an R&D program has been implemented at the West Basin Recycling Plant in California to study the removal of trace organics by advanced treatment (UV disinfection, membrane filtration). The pilot studies demonstrated the efficiency of two UV systems for final disinfection and in particular its high performance for the MF/RO effluent at low UV doses. UV appears as a cost competitive alternative to chlorination; it prevents the generation of toxic chlorinated by-products and reduces the salt content. It was demonstrated that microfiltration, as a replacement of conventional lime pretreatment for reverse osmosis, also offers numerous advantages. Despite the improved removal of trace organics, the membrane pretreatment before RO leads to a saving of 45% of life costs.

scholarly journals Biodegradation of Trace Organic Substances by Biological Activated Carbon.

1992 ◽  
Vol 15 (10) ◽  
pp. 683-689 ◽  
Author(s):  
Wataru NISHIJIMA ◽  
Mitsuo TOJO ◽  
Mitsumasa OKADA ◽  
Akihiko MURAKAMI
Keyword(s):  
Activated Carbon ◽  
Organic Substances ◽  
Biological Activated Carbon ◽  
Trace Organic

scholarly journals Trace Organic Removal during River Bank Filtration for Two Types of Sediment

Water ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1736 ◽  
Author(s):  
Victoria Burke ◽  
Laura Schneider ◽  
Janek Greskowiak ◽  
Patricia Baar ◽  
Alexander Sperlich ◽  
...  
Keyword(s):  
Rate Constants ◽  
Prediction Models ◽  
Removal Rate ◽  
Substantial Improvement ◽  
Bank Filtration ◽  
Field Site ◽  
River Bank ◽  
Spatial Differences ◽  
Trace Organic ◽  
River Bank Filtration

The process of bank filtration acts as a barrier against many anthropogenic micropollutants, such as pharmaceuticals and industrial products, leading to a substantial improvement of groundwater quality. The performance of this barrier is, however, affected by seasonal influences and subject to significant temporal changes, which have already been described in the literature. Much less is known about spatial differences when considering one field site. In order to investigate this issue, two undisturbed cores from a well-investigated bank filtration field site were sampled and operated in the course of a column study. The ultimate aim was the identification and quantification of heterogeneities with regard to the biodegradation of 14 wastewater derived micropollutants, amongst others acesulfame, gabapentin, metoprolol, oxypurinol, candesartan, and olmesartan. While six of the compounds entirely persisted, eight compounds were prone to degradation. For those compounds that were subject to degradation, degradation rate constants ranged between 0.2 day−1 (gabapentin) and 31 day−1 (valsartan acid). Further, the rate constants consistently diverged between the distinct cores. In case of the gabapentin metabolite gabapentin-lactam, observed removal rate constants differed by a factor of six between the cores. Experimental data were compared to values calculated according to two structure based prediction models.

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