Rapid utilisation of storm water-derived dissolved organic carbon and its fractions in an urban lake

2014 ◽  
Vol 65 (4) ◽  
pp. 370 ◽  
Author(s):  
Todd A. Wallace ◽  
George G. Ganf ◽  
Justin D. Brookes
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Oxygen Demand ◽  
South Australia ◽  
Rapid Decrease ◽  
Biological Oxygen Demand ◽  
Storm Water ◽  
Aquatic Humic Substances ◽  
High Concentrations ◽  
Mediterranean Water

Hypoxia occurred in the Torrens Lake, South Australia, after a 16-mm rainfall which discharged high concentrations of dissolved organic carbon (DOC) into the Lake. This work explores the hypothesis that hypoxia was correlated with the bioavailability of DOC. Carbonaceous biological oxygen demand and a decrease in DOC from samples collected immediately after stormwater was discharged into the Lake confirmed the presence of an active aerobic microbial community. In addition, the inlet and outlet of the Lake were monitored over a 10-day period. Dissolved oxygen fell from 10 to <3 mg L–1 within 44 h as the DOC increased and then decreased. A similar pattern occurred at the outlet after a lag of 20 h. At the inlet, because minimal mixing with the Lake water occurred, the rapid decrease of DOC and its fractions was interpreted as a function of aerobic microbial activity. Aquatic humic substances (AHS) were metabolised fastest, followed by hydrophilic acids (HiA) and hydrophilic neutrals (HiN). The warm nature of Mediterranean water bodies during summer may make them more susceptible to hypoxia as the frequency of extreme droughts allow accumulation of leaf litter and other debris that is subsequently mobilised by episodic floods.

scholarly journals Treatment of real paracetamol wastewater by fenton process

2017 ◽  
Vol 23 (2) ◽  
pp. 177-186 ◽  
Author(s):  
Gamze Dalgic ◽  
Ilter Turkdogan ◽  
Kaan Yetilmezsoy ◽  
Emel Kocak
Keyword(s):  
Pharmaceutical Industry ◽  
Organic Carbon ◽  
Chemical Oxygen Demand ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Biological Oxygen Demand ◽  
Fenton Process ◽  
Experimental Conditions ◽  
Mass Distributions ◽  
Amino Phenol

The study investigated the pretreatment of real paracetamol (PCT) wastewater of a pharmaceutical industry by Fenton process. At the best experimental conditions (COD/H2O2 = 1/1, Fe+2/H2O2 = 1/70, settling method:centrifuging, pH 6 at settling step), 92.7, 92.7, 95.5, 99.1, 99.9 and 99.4% of chemical oxygen demand (COD), total organic carbon (TOC), 5-day biological oxygen demand (BOD5), PCT, para-amino phenol (PAP) and aniline were removed, respectively. Changes in the concentrations of these parameters were also investigated for both oxidation and settling steps of Fenton process. It was found that COD and TOC were removed at the settling step (precipitation) whereas PCT, PAP and aniline were removed at the oxidation step. Mass balance calculations were also studied to show the mass distributions of COD in different phases (gas + foam, effluent and sludge). Fenton process was found as an effective method for the pretreatment of real PCT wastewater for discharging in a determined collective treatment plant.

Effect of landuse on the composition of throughflow water immediately above clayey B horizons in the Warren Catchment, South Australia

1993 ◽  
Vol 33 (2) ◽  
pp. 239 ◽  
Author(s):  
R Naidu ◽  
DR Williamson ◽  
RW Fitzpatrick ◽  
IO Hollingsworth
Keyword(s):  
Electrical Conductivity ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Organic Compounds ◽  
South Australia ◽  
Total Dissolved Solids ◽  
Rate Of Change ◽  
Native Woodland ◽  
Colloidal Matter ◽  
Dissolved Organic Compounds

The effect of landuse on composition of throughflow water immediately above the clayey B horizons in duplex soils (mostly natric and/or sodic) in the Mount Lofty Ranges, South Australia, was investigated using simple lysimeters. During July-November 1991, the pH of the first flow immediately after rainstorm under pines, native woodland, and pasture, respectively, was 5.7, 6.0, and 6.4. At each of the sites, average pH over 4 months during July-November was 5.8-5.9. Both the electrical conductivity (EC) and the amounts of total dissolved solids (TDS) were 2-3 times higher under pine than at other sites. The rate of change in EC with respect to TDS varied considerably among the sites, possibly due to the large differences in the concentration of dissolved organic compounds. Although the pH of water was >5.5, both aluminium and iron were recorded, especially under pine, where there were also high levels of dissolved organic compounds. High levels of suspended colloidal matter were recorded in the water flowing under pine, and these levels were related to dissolved organic carbon.

scholarly journals Characterization and UV Treatment of Cooling Water from an Oil Refinery

2015 ◽  
Vol 07 (2) ◽  
Keyword(s):  
Water Quality ◽  
Organic Carbon ◽  
Water Samples ◽  
Uv Light ◽  
Cooling Water ◽  
Oxygen Demand ◽  
Biological Oxygen Demand ◽  
Oil Refinery ◽  
Uv Treatment ◽  
Uv Light Irradiation

The cooling water from a local oil refinery was sampled, analyzed and experimentally treated with UV light irradiation at a wavelength of ~254nm. Total Organic Carbon (TOC), Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and bacteria count (BC) were analyzed for the water samples over years to monitor the water quality. The experimental results showed that: 1) The cooling water quality (e.g. organic matters) varies significantly over the years’ operation, probably due to the change in weather (mainly the temperature); 2) The UV treatment was highly effective for the disinfection of cooling water. Within a 24 hour treatment period, it was observed that the bacteria count decreased from 3890 cfu/ml to practically undetectable, which is consistent with the UV/Vis analysis that the absorbance at 254 nm was decreased significantly over the time. The degradation of chemicals by UV was also observed in the experiment.

scholarly journals Correction to: Influence of Biochar from Slow Pyrolysis on Dissolved Organic Carbon and Total Dissolved Nitrogen Levels of Urban Storm-Water Runoff

2018 ◽  
Vol 229 (8) ◽  
Author(s):  
Enrico Mancinelli ◽  
Edita Baltrėnaitė ◽  
Pranas Baltrėnas ◽  
Raimondas Grubliauskas ◽  
Eglė Marčiulaitienė ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Storm Water ◽  
Water Runoff ◽  
Slow Pyrolysis ◽  
Nitrogen Levels ◽  
Dissolved Nitrogen ◽  
Total Dissolved Nitrogen ◽  
Storm Water Runoff ◽  
Urban Storm

Nematodes, including a new record of Tobrilus diversipapillatus in Australia, as potential indicators of sewage effluent pollution

1986 ◽  
Vol 37 (2) ◽  
pp. 159 ◽  
Author(s):  
AH Arthington ◽  
GW Yeates ◽  
DL Conrick
Keyword(s):  
Organic Carbon ◽  
Benthic Macroinvertebrates ◽  
New Record ◽  
Oxygen Demand ◽  
Biological Indicators ◽  
Biological Oxygen Demand ◽  
Sewage Effluent ◽  
Free Living ◽  
Polluted Sites ◽  
Living Adult

Nine nematode taxa were collected during a study of the effects of sewage effluent on benthic macroinvertebrates in Bulimba Creek, Brisbane. The nematode, T. diversipapillatus, previously unknown from Australia, comprised 80% of the collection, and was most abundant at polluted sites with high biological oxygen demand and high levels of total organic carbon. Free-living adult and juvenile Mermithidae made up 15.6% of the collection and were most abundant at sites with low biological oxygen demand. The potential of T. diversipapillatus and Mermithidae to serve as biological indicators of organic enrichment and toxic pollution is discussed in terms of these preliminary findings and literature data.

scholarly journals Estimation of Biochemical Oxygen Demand Based on Dissolved Organic Carbon, UV Absorption, and Fluorescence Measurements

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Jihyun Kwak ◽  
Bumju Khang ◽  
Eunhee Kim ◽  
Hyunook Kim
Keyword(s):  
Wastewater Treatment ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
River Water ◽  
Biochemical Oxygen Demand ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Fluorescence Measurements ◽  
Wwtp Effluent ◽  
Software Sensors

Determination of 5-d biochemical oxygen demand (BOD5) is the most commonly practiced test to assess the water quality of surface waters and the waste loading. However, BOD5is not a good parameter for the control of water or wastewater treatment processes because of its long test period. It is very difficult to produce consistent and reliable BOD5results without using careful laboratory quality control practices. This study was performed to develop software sensors to predict the BOD5of river water and wastewater. The software sensors were based on the multiple regression analysis using the dissolved organic carbon (DOC) concentration, UV light absorbance at 254 nm, and synchronous fluorescence spectra. River water samples and wastewater treatment plant (WWTP) effluents were collected at 1-hour interval to evaluate the feasibility of the software sensors. In short, the software sensors developed in this study could well predict the BOD5of river water (r=0.78) and for the WWTP effluent (r=0.90).

scholarly journals Distribution and Estrogenic Risk of Alkylphenolic Compounds, Hormones and Drugs Contained in Water and Natural Surface Sediments, Morelos, Mexico

Separations ◽  
2022 ◽  
Vol 9 (1) ◽  
pp. 19
Author(s):  
José Gustavo Ronderos-Lara ◽  
Hugo Saldarriaga-Noreña ◽  
Mario Alfonso Murillo-Tovar ◽  
Laura Alvarez ◽  
Josefina Vergara-Sánchez ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Bisphenol A ◽  
Suspended Solids ◽  
Surface Sediments ◽  
Hydrophobic Interactions ◽  
Oxygen Demand ◽  
Total Suspended Solids ◽  
Endocrine Disrupting Compounds ◽  
Biological Oxygen Demand ◽  
Endocrine Disrupting

This study evaluated the distribution and potential estrogenic risk of the presence of bisphenol A (BPA), 4-nonylphenol (4NP), naproxen (NPX), ibuprofen (IBU), 17-β-estradiol (E2) and 17-α-ethinylestradiol (EE2) in water and sediments of the Apatlaco river micro-basin (Morelos, Mexico). The concentration of the determined compounds ranged between <LOD to 86.40 ng·L−1 and <LOD to 3.97 ng g−1 in water and sediments, respectively. The Log Kd distribution obtained (from 1.05 to 1.91 L Kg−1) indicates that the compounds tend to be adsorbed in sediments, which is probably due to the hydrophobic interactions confirmed by the significant correlations determined mainly between the concentrations and parameters of total organic carbon (TOC), total suspended solids (TSS), biological oxygen demand (BOD5) and chemical oxygen demand (COD). Of five sites analyzed, four presented estrogenic risk due to the analyzed endocrine-disrupting compounds (EEQE2 > 1 ng·L−1).

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