Assessing the removal potential of soil-aquifer treatment systems for bulk organic matter

2004 ◽  
Vol 50 (2) ◽  
pp. 245-253 ◽  
Author(s):  
T. Rauch ◽  
J.E. Drewes
Keyword(s):  
Organic Matter ◽  
Physical Adsorption ◽  
Biologically Active ◽  
Secondary Effluent ◽  
Soil Aquifer Treatment ◽  
Biological Degradation ◽  
Soil Infiltration ◽  
Biological Removal ◽  
Biomass Activity ◽  
Organic Fractions

The fate of effluent organic matter (EfOM) during groundwater recharge was investigated by studying the removal behavior of four bulk organic carbon fractions isolated from a secondary effluent: Hydrophilic organic matter (HPI), hydrophobic acids (HPO-A), colloidal organic matter (OM), and soluble microbial products (SMPs). Short-term removal of the bulk organic fractions during soil infiltration was simulated in biologically active soil columns. Results revealed that the four organic fractions showed a significantly different behavior with respect to biological removal. HPI and colloidal OM were prone to biological removal during initial soil infiltration (0-30 cm) and supported soil microbial biomass growth in the infiltrative surface. Additionally, colloidal OM was partly removed by physical adsorption or filtration. HPO-A and SMPs reacted recalcitrant towards biological degradation as indicated by low soil biomass activity responses. Adsorbability assessment of the biologically refractory portions of the fractions onto powered activated carbon (PAC) indicated that physical removal is not likely to play a significantly role in further diminishing recalcitrant HPO-A, HPI and SMPs during longer travel times in the subsurface.

Effect of soil type on water quality improvement during soil aquifer treatment

1996 ◽  
Vol 33 (10-11) ◽  
pp. 419-431 ◽  
Author(s):  
David M. Quanrud ◽  
Robert G. Arnold ◽  
L. Gray Wilson ◽  
Martha H. Conklin
Keyword(s):  
Water Quality ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Soil Type ◽  
Sandy Loam ◽  
Infiltration Rate ◽  
Biologically Active ◽  
Silty Sand ◽  
Secondary Effluent ◽  
Soil Aquifer Treatment

Bench-scale soil column experiments were performed at The University of Arizona to examine the effects of soil type and infiltration rate on the removal of wastewater organics during soil aquifer treatment (SAT). The suitability of such waters for potable uses following a combination of above-ground treatments and SAT polishing was under investigation. SAT was simulated in 1-meter soil columns containing repacked homogenized soils ranging from poorly graded sands to silty sands. Soils were obtained from existing and potential effluent recharge sites in Arizona. All columns received chlorinated/dechlorinated secondary effluent, ponded to a 25-cm depth above the soil surface, under alternating wet/dry conditions. Treatment efficiencies in biologically active and inhibited columns were compared to determine the mechanism(s) of water quality improvements and the sustainability of SAT. Water quality parameters included: (i) non-purgable dissolved organic carbon and (ii) UV absorbance at 254 nm (used as a measure of disinfection-by-product precursors). Differences in through-column removal of non-purgable dissolved organic carbon were significant for columns containing sandy loam (56%), sand (48%) and silty sand (44%). Removal of UV-absorbing organics was not significantly different for columns containing sand and sandy loam (22 and 20%, respectively). There was no significant correlation between infiltration rate and removal efficiency of either organic parameter for both soils.

Fate of secondary effluent dissolved organic matter during soil-aquifer treatment

2007 ◽  
Vol 52 (18) ◽  
pp. 2496-2505 ◽  
Author(s):  
Shuang Xue ◽  
QingLiang Zhao ◽  
Liangliang Wei ◽  
Lina Wang ◽  
Zhigang Liu
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Secondary Effluent ◽  
Soil Aquifer Treatment

Sludge minimization by disintegration at different wastewater treatment plants

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
Luchien Luning ◽  
Paul Roeleveld ◽  
Victor W.M. Claessen
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
New Technologies ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Biological Degradation ◽  
Ongoing Research ◽  
Sludge Minimization

In recent years new technologies have been developed to improve the biological degradation of sewage sludge by anaerobic digestion. The paper describes the results of a demonstration of ultrasonic disintegration on the Dutch Wastewater Treatment Plant (WWTP) Land van Cuijk. The effect on the degradation of organic matter is presented, together with the effect on the dewatering characteristics. Recommendations are presented for establishing research conditions in which the effect of sludge disintegration can be determined in a more direct way that is less sensitive to changing conditions in the operation of the WWTP. These recommendations have been implemented in the ongoing research in the Netherlands supported by the National Institute for wastewater research (STOWA).

Removal efficiency of dissolved organic matter from secondary effluent by coagulation-flocculation processes

2020 ◽  
pp. 1-10
Author(s):  
Natália Rodrigues Guimarães ◽  
Fabiane Dörr ◽  
Rodrigo de Oliveira Marques ◽  
Ernani Pinto ◽  
Sidney Seckler Ferreira Filho
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Removal Efficiency ◽  
Secondary Effluent

Removal of nutrients, organic matter, and metal from domestic secondary effluent through microalgae cultivation in a membrane photobioreactor

2016 ◽  
Vol 91 (10) ◽  
pp. 2713-2719 ◽  
Author(s):  
Feng Gao ◽  
Chen Li ◽  
Zhao-Hui Yang ◽  
Guang-Ming Zeng ◽  
Jun Mu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Secondary Effluent ◽  
Microalgae Cultivation

Treatability of organic fractions derived from secondary effluent by reverse osmosis membrane

2003 ◽  
Vol 37 (19) ◽  
pp. 4801-4809 ◽  
Author(s):  
J.Y. Hu ◽  
S.L. Ong ◽  
J.H. Shan ◽  
J.B. Kang ◽  
W.J. Ng
Keyword(s):  
Reverse Osmosis ◽  
Secondary Effluent ◽  
Reverse Osmosis Membrane ◽  
Organic Fractions

Characterization and Source of Trihalomethane Formation in the Secondary Effluent by Sequencing Batch Reactors

2013 ◽  
Vol 316-317 ◽  
pp. 323-326
Author(s):  
Chao Jie Zhang ◽  
Si Bo Li ◽  
Qian Chen ◽  
Qi Zhou
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Dissolved Organic Matter ◽  
Secondary Effluent ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Human Beings ◽  
By Products

Dissolved organic matter (DOM) may do harms to human beings. After disinfected by chlorine (amine), DOM can form disinfection by-products (DBPs) which can be mutagenic, teratogenic and carcinogenic. Characterization and source of trihalomethane precursors in the secondary effluent by sequencing batch reactors were investigated. CHCl3 was the primary DBPs. The results showed that the precursors of CHCl3 were mainly strongly hydrophobic DOM, while CHCl2Br and CHClBr2 were mainly formed from hydrophilic DOM. The effects of different powder media (activated carbon, zeolite) on removal of DOM were compared. The results showed that the dosing of powder media can promote the removal of DOM and the DBPs precursors.

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