Screening for non-regulated organic compounds in municipal wastewater in göteborg, sweden

1996 ◽  
Vol 33 (6) ◽  
Keyword(s):  
Organic Compounds ◽  
Municipal Wastewater

scholarly journals The Influence of the Poles’ Lifestyle on the Quantity and Quality of Municipal Wastewater

2021 ◽  
Vol 31 (3) ◽  
pp. 265-275
Author(s):  
Ewelina Płuciennik-Koropczuk ◽  
Martyna Myszograj ◽  
Sylwia Myszograj
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Organic Compounds ◽  
Municipal Wastewater ◽  
Personal Care ◽  
Total N ◽  
Qualitative Characteristics ◽  
Total P ◽  
Wastewater Treatment Systems

Abstract The article presents lifestyle as an important factor determining the quantity and quality of municipal wastewater. The characteristic of wastewater in Poland has changed significantly in recent years. The qualitative characteristics of municipal wastewater indicate an increase of organic compounds and in the scope of micro-contaminants identified in them, e.g. nanoparticles, microplastics, pharmaceutical and personal care products or heavy metals. Therefore, the knowledge of parameters such as: BOD5, COD, total N, total P and suspension solids is no longer sufficient for the design and operation of wastewater treatment systems. Comprehensive research in this area is necessary to select those indicators that better describe the characteristics of wastewater.

Predicting the Fate of Volatile Organic Compounds in Municipal Wastewater Treatment Plants

1992 ◽  
Vol 25 (4-5) ◽  
pp. 383-389 ◽  
Author(s):  
H. Melcer ◽  
J. Bell ◽  
D. Thompson
Keyword(s):  
Volatile Organic Compounds ◽  
Activated Sludge ◽  
Organic Compounds ◽  
Pilot Plant ◽  
Municipal Wastewater ◽  
Dynamic Models ◽  
Treatment Plant ◽  
Full Scale ◽  
Volatile Organic ◽  
Plant Data

Pilot plant and full scale investigations were carried out to determine the fate of selected volatile organic compounds (VOCs) in activated sludge aeration basins. Treatability parameters for each VOC were estimated from these investigations and used to calibrate TOXCHEM, computer-based steady state and dynamic models developed to predict the fate of VOCs in municipal activated sludge systems. The pilot plant was fed with wastewater from two different municipal sources. It was operated in parallel with a municipal treatment plant and was found to adequately simulate the performance of the full scale plant. Data suggest that the current models, calibrated with pilot plant data, may produce useful predictions of the fate of VOCs in full scale plants.

FRACTIONATION OF ORGANIC COMPOUNDS IN WASTEWATER FROM MUNICIPAL SEWAGE SYSTEM - COMPARISON OF METHODS

2018 ◽  
Vol 171 (51) ◽  
pp. 25-39
Author(s):  
Małgorzata Makowska ◽  
Aleksandra Sowińska ◽  
Marcin Spychała
Keyword(s):  
Organic Compounds ◽  
Municipal Wastewater ◽  
Statistical Tests ◽  
Particle Separation ◽  
Laboratory Analysis ◽  
Municipal Sewage ◽  
Comparison Of Methods ◽  
Sewage System ◽  
Size Of Particles

The paper presents the overview and characteristics of three different methods of organic compounds determination in wastewater: method according to ATV, respirometric method and method with use of particle separation. The results of laboratory analysis of municipal wastewater composition carried out using each of the described methods are presented. Wastewater derived from sewage collector in Grodzisk Wlkp. The research was performed in 7 series, from October 2013 to May 2014. The results obtained using different methods were compared by statistical tests. The observed differences were the consequence of the contractually assumed coefficients and size of particles and the defects during manual particles separation.

scholarly journals Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation

2016 ◽  
Vol 4 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Amirreza Talaiekhozani ◽  
Zeinab Eskandari ◽  
Marzieh Bagheri ◽  
Mohammad Reza Talaei ◽  
Malihe Salari
Keyword(s):  
Hydrogen Sulfide ◽  
Ultraviolet Radiation ◽  
Organic Compounds ◽  
Municipal Wastewater

Oxygen uptake at Parshall flumes

1998 ◽  
Vol 25 (4) ◽  
pp. 769-776 ◽  
Author(s):  
Richard G Zytner ◽  
Ziyad G Rahmé ◽  
Michael Labocha
Keyword(s):  
Wastewater Treatment ◽  
Volatile Organic Compounds ◽  
Oxygen Uptake ◽  
Organic Compounds ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Drop Height ◽  
Municipal Wastewater Treatment ◽  
Volatile Organic ◽  
Municipal Wastewater Treatment Plants

Parshall flumes are frequently used to measure flow at municipal wastewater treatment plants. With the flume causing turbulent flow, there is the potential for the emission of volatile organic compounds. To assess the extent of the emissions, laboratory and field measurements at Parshall flumes were completed, using oxygen as a surrogate. The laboratory measurements showed that the most important parameters influencing oxygen uptake were total energy loss and downstream water depth. Satisfactory results were also obtained using drop height. Field results from three municipal wastewater treatment plants showed that oxygen uptake correlated strongly with drop height and only slightly with discharge rate. This is beneficial as downstream water depth is difficult to measure in the field. Findings suggest that the use of an appropriate weir model would allow the estimation of oxygen uptake and volatile organic compounds stripping at Parshall flumes.Key words: oxygen uptake, volatile organic compounds, flumes, wastewater.

Screening for non-regulated organic compounds in municipal wastewater in Göteborg, Sweden

1996 ◽  
Vol 33 (6) ◽  
pp. 9-15 ◽  
Author(s):  
Nicklas Paxéus ◽  
Horst Friedrich Schröder
Keyword(s):  
Organic Compounds ◽  
Municipal Wastewater ◽  
Treatment Process ◽  
Phosphate Esters ◽  
Substituted Phenols ◽  
Partial Removal ◽  
Water Treatment Process ◽  
Cleaning Agents ◽  
Bonded Phase ◽  
Domestic Products

Organic compounds from influent and effluent wastewater were concentrated on C18 bonded phase cartridges and sequentially eluted with organic solvents of different polarity. About 80% of the toxicity (Microtox) arised from organic matter eluted with ether. Approximately 50% decrease in the overall toxicity of the influent was observed during the treatment process. More than 50 individual compounds were identified in the eluates for both influent and effluent by GC-MS and FIA-MS analysis. Perfume additives to washing powders and cleaning agents and a number of industrial volatile hydrophilic solvents were quantitatively removed by volatilization in the treatment process. Only a partial removal was observed for less volatile compounds (benzophenone, dibutyl formamide, dimethyl quinoline, benzothiazole, phosphate esters) of industrial origin. Substituted phenols, used as antioxidants in both industrial and domestic products were transformed to corresponding -ene-ones in the biological stage of the water treatment process. Polyglycols and polyglycol ether type surfactants are not removed in the activated sludge prosess, only partly transformed to highly persistant acids by oxidation of the terminal hydroxyl function. The treatability in municipal wastewater plants should be paid much more attention when introducing polar non-volatile constituents in new “environmentally friendly” water based products or processes.

scholarly journals Empirical model for predicting concentrations of refractory hydrophobic organic compounds in digested sludge from municipal wastewater treatment plants

2009 ◽  
Vol 6 (6) ◽  
pp. 544 ◽  
Author(s):  
Randhir P. Deo ◽  
Rolf U. Halden
Keyword(s):  
Wastewater Treatment ◽  
Organic Compounds ◽  
Empirical Model ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Environmental Pollutants ◽  
Treatment Plant ◽  
Municipal Wastewater Treatment ◽  
Hydrophobic Organic Compounds ◽  
Digested Sludge

Environmental context. Tens of thousands of manmade chemicals are discharged into municipal wastewaters on a continual basis by consumers around the world but surprisingly little is known about the occurrence and fate of these substances in the environment. The present study furnishes an easily applicable model that can help to predict the presence and concentration of manmade chemicals in digested municipal sludge (biosolids) destined for disposal on land. The new tool can be used to prescreen and identify in chemical databases potential environmental pollutants. Abstract. An empirical model is presented allowing for the prediction of concentrations of hydrophobic organic compounds (HOCs) prone to accumulate and persist in digested sludge (biosolids) generated during conventional municipal wastewater treatment. The sole input requirements of the model are the concentrations of the individual HOCs entering the wastewater treatment plant in raw sewage, the compound’s respective pH-dependent octanol-water partitioning coefficient (DOW), and an empirically determined fitting parameter (pfit) that reflects persistence of compounds in biosolids after accounting for all potential removal mechanisms during wastewater treatment. The accuracy of the model was successfully confirmed at the 99% confidence level in a paired t test that compared predicted concentrations in biosolids to empirical measurements reported in the literature. After successful validation, the resultant model was applied to predict levels of various HOCs for which occurrence data in biosolids thus far are lacking.

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