Pharmaceuticals in processing of municipal sewage sludge studied by grab and passive sampling

2018 ◽  
Vol 53 (1) ◽  
pp. 14-23 ◽  
Author(s):  
Petra C. Lindholm-Lehto ◽  
Heidi S. J. Ahkola ◽  
Juha S. Knuutinen
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Passive Sampling ◽  
Solid Phase ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Municipal Sludge ◽  
Bioavailable Fraction ◽  
Before And After

Abstract Concentrations of pharmaceuticals, consisting of four anti-inflammatory and one antiepileptic drug, were studied in the aqueous and solid phase of municipal sewage sludge, collected from a wastewater treatment plant (WWTP) in central Finland. The samples included untreated municipal sludge from the biological wastewater treatment, digested sludge and sludge before and after composting. First, samples were taken as grab samples to study the bioavailable part in aqueous phase but also the part in solid fraction. Later, the long-term concentrations were studied by passive sampling with styrene divinylbenzene-reverse phase sulfonated (SDB-RPS) disks. In the untreated solid sludge, the concentrations of carbamazepine, diclofenac, ibuprofen, ketoprofen, and naproxen were 0.5 ng g−1, 26 ng g−1, 29 ng g−1, 250 ng g−1, and 13 ng g−1, while in liquid phase they were 5.6 ng L−1, 200 ng L−1, 210 ng L−1, 35 ng L−1, and 55 ng L−1, respectively. Concentrations decreased with the treatment steps but substantial amounts still occured even after the final stage. The results show that current sludge treatment cannot fully remove pharmaceuticals, leaving varying concentrations after each stage. Additionally, the results suggest that SDB-RPS disks are suitable for sampling and quantification of the bioavailable fraction of pharmaceuticals in municipal sludge.

scholarly journals Ammonia Emission from Sewage Sludge Incineration Process

2016 ◽  
Vol 23 (4) ◽  
pp. 665-675 ◽  
Author(s):  
Grzegorz Wielgosiński ◽  
Robert Cichowicz ◽  
Jacek Wiśniewski
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Municipal Wastewater ◽  
Combustion Process ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Ammonia Emission ◽  
Municipal Sewage Sludge ◽  
Sludge Incineration

Abstract In quantitative terms, sludge produced in the process of municipal wastewater treatment represents a small part of the total waste generated in municipal sources - its quantity represents only a few percent of the generated mass of municipal waste. However, the threats it brings, do not allow it to be neglected while designing the wastewater treatment process. At the same time, with increasing requirements regarding the quality of sewage discharged into the environment, there is an increase in the amount of sludge produced in wastewater treatment processes. In recent years, the share of thermal treatment of municipal sewage sludge has risen sharply - about 12 modern sludge incineration plants have been built and construction of new ones is considered. During more than a four-year operation of the sewage sludge incineration plant in the Combined Sewage Treatment Plant in Lodz (GOS) a large ammonia emission from the combustion process was observed. So, a decision was taken to examine this process. The paper presents results of ammonia emission from the combustion of sewage sludge from GOS as a function of temperature.

Assessment of Environmental Quality of Soil Fertilized Grapefruit Trees with Municipal Sewage Sludge

2013 ◽  
Vol 671-674 ◽  
pp. 2736-2741
Author(s):  
Yin An Ming ◽  
Tao Tao
Keyword(s):  
Sewage Sludge ◽  
Environmental Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Land Application ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Limiting Factor

To reuse municipal sewage sludge safely, experiment was carried out on grapefruit trees fertilized with composted sludge from Shiweitou Sewage Treatment Plant in Xiamen City of China, and a method was introduced of how to assess the environmental quality of grapefruit trees soil fertilized with sludge by Set Pair Analysis (SPA) model. The results showed that the soil in the surface layer (0-15cm) and the deeper layer (15-30cm) was less clean, and the environment of soil was not polluted. Thus it was feasible to use sludge as fruit fertilizer. The maximum service life of sludge for continuous land application was estimated by taking Cd as the limiting factor, which would provide scientific guide and technical support for safe land application of sludge.

Decontamination of Heavy Metals From Municipal Sewage Sludge (MSS) by Electrokinetic Remediation

2019 ◽  
Author(s):  
A. Ribeiro ◽  
J. Araújo ◽  
A. Mota ◽  
R. Campos ◽  
C. Vilarinho ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Operation Time ◽  
Electrokinetic Remediation ◽  
Permeable Reactive Barrier ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Reactive Barrier

Abstract A large quantity of sludges resulting from the treatment of MWWTP (Municipal Wastewater Treatment Plant) effluent is generated annually following the increase of population density and acceleration of urbanization. Sludge production in Europe has been predicted by around 12 million tons in 2020. As a solid waste, appropriate disposal of Municipal Sewage Sludge (MSS) has been taken seriously due to its larger volume and toxic substances such as heavy metals. Electrokinetic remediation has more advantages in heavy metals uptake compared to other technologies, due to the ability to treat soils in-situ and to remove heavy metals from soils. In this work, it was studied the remediation of MSS by the electrokinetic remediation coupled with activated carbon (AC) as a permeable reactive barrier (PRB). It was applied an electric current of 3 V cm−1 and it was used an AC/sludge ratio of 30 g kg−1 of contaminated sludge for the preparation of the PRB. In each trial, the evolution of cadmium (Cd), lead (Pb), copper (Cu), chromium (Cr), nickel (Ni) and zinc (Zn) removal from the sludge were evaluated. Results proved that this process is perfectly suited for the removal of chromium, nickel and zinc metals from the sludge. At the end of the operation time, it was achieved a maximum removal rate of 56% for chromium, 73% for nickel and 99% for zinc, with initial concentrations of 2790 mg kg−1, 2840 mg kg−1, and 94200 mg kg−1, respectively. Based on these results, it was proved the technical viability of the proposed technology (electrokinetic with AC as a permeable reactive barrier) to treat municipal sewage sludges.

scholarly journals Ecotoxicity Assessment of Stabilized Sewage Sludge from Municipal Sewage Treatment Plant

2016 ◽  
Vol 22 (3) ◽  
pp. 157-166 ◽  
Author(s):  
Elżbieta Włodarczyk ◽  
Marta Próba ◽  
Lidia Wolny
Keyword(s):  
Sewage Sludge ◽  
Sewage Treatment ◽  
Daphnia Pulex ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Water Extract ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Test Results ◽  
Municipal Sewage Treatment Plant

Abstract Aim of this study was to evaluate the ecotoxicity of municipal sewage sludge conditioned with polyelectrolytes, taken from selected sewage treatment plant. Using the bioindication analysis overall toxicity was assessed, which allows to know the total toxicity of all the harmful substances contained in sewage sludge, in many cases acting synergistically. To prepare a sample of sludge for the basic test, all analyses were performed with a ratio of liquid to solid of 10:1 (water extract). Daphnia pulex biological screening test was used. A dilution series of an water extract of sludge were prepared to include within its scope the lowest concentration that causes 100% effect and the highest producing less than 10% of the effect within a specified range of the assay. The results of the test were read after 24 and 48 hours. Based on the research and analysis of test results it proved that the sewage sludge conditioned with polyelectrolytes exhibit the characteristics of eco-toxic.

scholarly journals The determination of fertiliser quality of the formed struvite from a WWTP

2021 ◽  
Author(s):  
C. González ◽  
B. Fernández ◽  
F. Molina ◽  
M. A. Camargo-Valero ◽  
C. Peláez
Keyword(s):  
Sewage Sludge ◽  
Municipal Wastewater ◽  
Crop Yields ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Municipal Wastewater Treatment ◽  
Sand Column ◽  
Global Food Security ◽  
Dewatered Sewage Sludge

Abstract Struvite from nutrient-rich wastewaters has been identified as a potential substitute for commercial mineral fertilisers, with the added benefit of reducing threats to global food security by prolonging phosphate rock reserves. A fertilisation test using grass (Brachiaria brizantha Marandú) and a sand column leaching test was conducted to determine the agronomic effectiveness of struvite precipitates produced from the supernatant of dewatered sewage sludge (centrate) from a municipal Wastewater Treatment Plant (WWTP). The performance of this struvite as a fertiliser was compared with Biosolids and commercial fertilisers (Urea and Triple15). The results show that the concentration of heavy metals in struvite was lower than in Biosolids and below the limits of Colombia and European fertiliser regulations. Struvite increased the uptake of N and P in grass, resulting in crop yields similar to other treatments tested. Struvite use as an effective slow-release fertiliser is highly dependent on the size of crystal particles, particularly in achieving low P losses but resulted in high N loss in the sand columns tested; N loses from struvite were higher than in the commercial fertilisers due to the struvite small particle size. Therefore, struvite represents a suitable opportunity to recover and recycle nutrients from municipal sewage sludge, facilitating the effective reuse of P and N in agriculture and uptake by plants.

scholarly journals Directions and Challenges in the Management of Municipal Sewage Sludge in Poland in the Context of the Circular Economy

2020 ◽  
Vol 12 (9) ◽  
pp. 3686 ◽  
Author(s):  
Ksymena Rosiek
Keyword(s):  
European Union ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Circular Economy ◽  
Tap Water ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Sludge Management ◽  
Sludge Disposal ◽  
Sewage Sludge Management

Landfilling was the main method of sewage sludge disposal in Poland for decades. After Poland’s accession to the European Union (EU), many investments have been made into providing better access to tap water as well as to collect and treat municipal sewage. However, sewage sludge treatment has not been treated as an integral part of the implementation of wastewater management obligations. Stricter European Union regulations regarding the management of municipal sewage sludge (MSS) pose new challenges for Poland. The aim of this study was to analyze changes in the direction of the final management of municipal sewage sludge in Poland based on the analysis of strategic documents, regulations, literature, and available statistical data. The aim of the analysis was to search for directions to modify how sewage sludge is managed, given the approach promoted by the circular economy concept. The results prove that investments in wastewater treatment plants according to the EU sewage directive are not applied to the development of infrastructure that would enable the disposal of sewage sludge, which, for many years, has been stored (landfilling) or used directly in agriculture and ground reclamation. The introduction of stricter regulations in the area of sewage sludge usage and better wastewater treatment have increased the level of difficulties concerning sewage sludge management. Poland faces the challenge of defining sewage sludge management directions. The circular economy concept offers an approach that can be the basis for the creation of a new sewage sludge management strategy for Poland. The concept allows the combined goals of sewage sludge disposal and of energy and nutrients recovery to be achieved.

Optimization of matrix solid-phase dispersion coupled with high performance liquid chromatography for determination of selected antibiotics in municipal sewage sludge

2016 ◽  
Vol 8 (24) ◽  
pp. 4853-4860 ◽  
Author(s):  
Maryam Vosough ◽  
Mahdieh Nazari Onilghi ◽  
Amir Salemi
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Sewage Sludge ◽  
High Performance ◽  
Solid Phase ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion

Two alternative matrix nano-solid phase dispersion approaches coupled with HPLC-DAD were developed for the determination of sulfadiazine, sulfamerazine and sulfamethoxazole in STP sludge samples.

Study on Rapid High-Efficient Composting Process of Sewage Sludge

2014 ◽  
Vol 955-959 ◽  
pp. 2940-2943
Author(s):  
Ke Zhao ◽  
Yu Zhang ◽  
Yu Ting Zhang ◽  
Ying Ying Yin
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Phosphorus Concentration ◽  
Municipal Wastewater Treatment ◽  
Composting Process ◽  
High Efficient

Based on the static composting process of municipal sewage sludge, the parameters of the treatment process were studied, including moisture, temperature, pH, organic matter, total phosphorus, the number of bacterial and GI(Germination Index). The decomposition of organic matter and phosphorus concentration were obvious and the amount of bacteria varied regularly. After the composting, pH, water contend, organic matter and GI all met Disposal of sludge from municipal wastewater treatment plant-Control standard for agricultural use.

scholarly journals Technical, Energetic and Economic Optimization Analysis of Selection of Heat Source for Municipal Sewage Sludge Dryer

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 316
Author(s):  
Mariusz Tańczuk ◽  
Wojciech Kostowski
Keyword(s):  
Sewage Sludge ◽  
Heat Source ◽  
Thermal Power ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sensitivity Analyses ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Optimal Size ◽  
Promising Alternative

The treatment of growing production of municipal sewage sludge has become a significant global problem. Drying of digested sewage sludge is a promising alternative to sludge disposal at dumping sites. The research objective of this study was to find the optimal heat source for a sludge drying plant in a large municipal sewage treatment plant (people equivalent: 250,000). Two boundary heat supply cases were analyzed in the paper: cogeneration of heat and power (CHP) units, internal combustion (IC) engines fired with natural gas, and plant supplied with a gas boiler. The aim of the research was to find the optimal size of the cogeneration unit cooperating with the gas boiler as heat sources for a given drying plant case with the maximum net present (NPV) value as the objective function. The results of the conducted optimization show higher profitability of cases with larger cogeneration unit. For the basic assumptions, the maximum NPV is obtained for the largest analyzed CHP unit: 1300 kW of thermal power output. Sensitivity analyses show that the varying gas and electricity prices can relocate the NPV maximum towards smaller CHP sizes. A supplementary energy analysis shows that implementing larger CHP units yields a higher energy efficiency of the system, up to 0.52.

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