scholarly journals The use of urban sewage sludge as a substrate in a microbial fuel cell

2018 ◽  
Vol 7 (2.23) ◽  
pp. 277 ◽  
Author(s):  
RR Rudenko ◽  
EE Vasilevich ◽  
GO Zhdanova ◽  
KI Chizhick ◽  
IA Topchiy ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Microbial Fuel Cells ◽  
Sewage Treatment ◽  
Electric Circuit ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Left Bank ◽  
Urban Sewage ◽  
Number Of Microorganisms ◽  
Urban Sewage Sludge

The possibility of using urban sewage sludge from the silt areas of the sewage treatment facilities of the left bank of Irkutsk as a substratum in microbial fuel cells (MFС) was studied. The characteristics of voltage and current intensity generated by the microbiological preparation "Doctor Robik 109" in MFC without taking into account and taking into account the resistance of the external electric circuit are obtained. It is shown that sewage sludge with the addition of peptone and acetate (without the introduction of microorganisms-bioagents) is also capable of generating electricity. Presumably, this is due to the presence in the sewage sludge of a large number of microorganisms and their spores. An increase in the total microbial number in the investigated wastewater sediments supports the above hypothesis. The carried out researches testify to the prospects of using MFC for municipal sewage sludge utilization.  

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.

scholarly journals Possible Applications of Hardening Slurries with Fly Ash from Thermal Treatment of Municipal Sewage Sludge in Environmental Protection Structures

2016 ◽  
Vol 63 (1) ◽  
pp. 47-61 ◽  
Author(s):  
Paweł Falacinski ◽  
Łukasz Szarek
Keyword(s):  
Fly Ash ◽  
Sewage Sludge ◽  
Thermal Treatment ◽  
Sewage Treatment ◽  
Combustion Products ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Water Separation ◽  
Coal Combustion Products ◽  
Environmentally Safe

Abstract In Poland, in recent years, there has been a rapid accumulation of sewage sludge - a by-product in the treatment of urban wastewater. This has come about as a result of infrastructure renewal, specifically, the construction of modern sewage treatment plants. The more stringent regulations and strategic goals adopted for modern sewage management have necessitated the application of modern engineering methodology for the disposal of sewage sludge. One approach is incineration. As a consequence, the amount of fly ash resulting from the thermal treatment of municipal sewage sludge has grown significantly. Hence, intensive work is in progress for environmentally safe management of this type of waste. The aim of the experiment was to evaluate the possibility of using the fly ash that results from municipal sewage sludge thermal treatment (SSTT) as an additive to hardening slurries. This type of hardening slurry with various types of additives, e.g. coal combustion products, is used in the construction of cut-off walls in hydraulic structures. The article presents the technological and functional parameters of hardening slurries with an addition of fly ash obtained by SSTT. Moreover, the usefulness of these slurries is analysed on the basis of their basic properties, i.e. density, contractual viscosity, water separation, structural strength, volumetric density, hydraulic conductivity, compressive and tensile strength. The mandated requirements for slurries employed in the construction of cut-off walls in flood embankments are listed as a usefulness criteria. The article presents the potential uses of fly ash from SSTT in hardening slurry technology. It also suggests directions for further research to fully identify other potential uses of this by-product in this field.

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 Application Status of Co-Processing Municipal Sewage Sludge in Cement Kilns in China

2019 ◽  
Vol 11 (12) ◽  
pp. 3315 ◽  
Author(s):  
Jingcheng Xu ◽  
Li Ping ◽  
Haihua Cao ◽  
Wei Liu ◽  
Yunhui Gu ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Sewage Treatment ◽  
Pollutant Emissions ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Cement Kiln ◽  
Continuous Growth ◽  
Construction Methods ◽  
Sludge Disposal ◽  
Cement Kilns

Municipal sewage sludge (MSS) disposal is an urgent issue in China with the continuous growth of sewage treatment capacity. Among various disposal methods, co-processing of MSS in cement kilns has been one of the most promising disposal methods in recent years. The present situation of sewage treatment and sludge disposal, the development of co-processing MSS in a cement kiln, and main disposal routes in China were discussed in this study. The results indicated that China had paid considerable attention to the technology and released correlative policies in the past few years. There were about 35 co-processing projects built in China, all of which were limited by construction scale and pollutant emissions. Due to differences in construction methods and economic conditions, China’s co-processing projects mainly employed three routes—direct addition to a transition chamber, addition to a precalciner after direct thermal drying, and addition to a precalciner after indirect drying. Summarizing and analyzing the characteristics of MSS co-processing would facilitate its development in China and similar regions.

Gasifying Kinetics Analysis on Mixing Municipal Solid Waste and Sludge

2013 ◽  
Vol 650 ◽  
pp. 629-633
Author(s):  
Song Tao Kong ◽  
Ping Cai ◽  
Li Jun Zhao ◽  
Jiang Tao Wei
Keyword(s):  
Sewage Treatment ◽  
Calorific Value ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Kinetics Parameters ◽  
Exponential Factor ◽  
Urban Sewage ◽  
Other Substances ◽  
Gasification Reaction ◽  
Design Construction

To gasify the mixture of sludge coming from urban sewage treatment residual and MSW is an ideal way to control the combustion of dioxins and other substances which pollute the atmosphere. Due to the complex composition of MSW and changing rapidly in the gasification parameters as much as possible, engineering require main ingredients and calorific value. The main ingredients of typical municipal sewage sludge and MSW are measured on thermobalance pyrolysis. The kinetics parameters of the gasification reaction are obtained, such as the activation energy and pre-exponential factor. These parameters synthesis mixture parameters provide the basis for hybrid gasification of the actual sludge and MSW reactor design, construction and operation.

scholarly journals Autothermal Thermophilic Aerobic Digestion of Municipal Sewage Sludge in Poland. Review

Proceedings ◽  
2020 ◽  
Vol 51 (1) ◽  
pp. 12
Author(s):  
Izabela Bartkowska ◽  
Paweł Biedka ◽  
Izabela Anna Talalaj
Keyword(s):  
Energy Consumption ◽  
Sewage Sludge ◽  
Organic Fertilizer ◽  
Sewage Treatment ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Aerobic Digestion ◽  
Sewage Treatment Plants ◽  
Thermophilic Aerobic Digestion ◽  
Autothermal Thermophilic Aerobic Digestion

This paper presents the process of autothermal thermophilic aerobic digestion (ATAD). The installations used in municipal sewage treatment plants in Poland were reviewed. The adopted solutions for sludge management and parameters of operating installations were presented. Attention was also drawn to the energy consumption of the process. On the basis of research carried out in the years 2003–2019 in the plants in question, the characteristics of sludge after the ATAD process were presented. The parameters that determine the usefulness of the sludge as an organic fertilizer are indicated above all.

scholarly journals Fly Ash from Thermal Conversion of Sludge as a Cement Substitute in Concrete Manufacturing

2021 ◽  
Vol 13 (8) ◽  
pp. 4182
Author(s):  
Gabriela Rutkowska ◽  
Marek Chalecki ◽  
Mariusz Żółtowski
Keyword(s):  
Fly Ash ◽  
Sewage Sludge ◽  
Raw Materials ◽  
Sewage Treatment ◽  
Chemical Properties ◽  
Cement Composite ◽  
Production Costs ◽  
Municipal Sewage ◽  
Partial Replacement ◽  
Municipal Sewage Sludge

Striving for reduction of production costs and constraints on natural resources cause the use of waste materials as substitutes of traditional raw materials to become increasingly important. Dynamic development of sewerage systems and sewage treatment plants observed over the recent years leads to increase of mass of the produced sewage sludge. According to the Waste Law, the municipal sewage sludge can be used if it is properly stabilized, e.g., through thermal processing. This process results in significant quantities of fly ash which must be properly utilized. The paper presents results of investigations of influence of partial replacement of cement by the fly ash from sewage sludge on concrete parameters. It was designed as a C20/25 class concrete mix, based on the Portland cement CEM I 42.5R with various ash content. Physical and chemical properties of the ash as well as frost resistance and the compressive strength of the concrete after 28, 56 and 365 days of curing were investigated. The obtained results of investigations confirm the possibility of application of fly ash wastes as a cement substitute in the concrete manufacturing. If a predefined quantity of cement is replaced by the fly ash, then one can obtain cement composite with good strength parameters.

Toxicologic studies associated with the agricultural use of municipal sewage sludge and health effects among sewage treatment plant workers

1984 ◽  
Vol 4 (3) ◽  
pp. 305-321 ◽  
Author(s):  
John G. Babish ◽  
Gilbert S. Stoewsand ◽  
Janet M.Scarlett Kranz ◽  
Juanell N. Boyd ◽  
Virginia D. Ahrens ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Health Effects ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Agricultural Use

scholarly journals Production of Biosolids by Autothermal Thermophilic Aerobic Digestion (ATAD) from a Municipal Sewage Sludge: The Polish Case Study

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6258
Author(s):  
Izabela Bartkowska ◽  
Paweł Biedka ◽  
Izabela Anna Tałałaj
Keyword(s):  
Energy Consumption ◽  
Sewage Sludge ◽  
Dry Matter ◽  
Organic Fertilizer ◽  
Sewage Treatment ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Aerobic Digestion ◽  
Thermophilic Aerobic Digestion ◽  
Autothermal Thermophilic Aerobic Digestion

This manuscript analyzed the process of autothermal thermophilic aerobic digestion (ATAD) used in installations of municipal sewage treatment plants in Poland. Additionally, solutions for sludge management and the parameters of operating installations were presented. Attention was also put to the energy consumption of the process, where the energy consumption for 1 m3 of sludge treated was between 18.4 and 27.79 kWh. The amount of sewage flowing into the analyzed plants was between 1500 and 14,000 m3/d. On the basis of research carried out in the years 2003–2019 in the selected plants, the characteristics of sludge after the ATAD process were presented. The parameters that determine the usefulness of the sludge as an organic fertilizer were indicated above all. The content of total nitrogen, which was from 2.4 to 8.1% of dry matter, ammonium nitrogen, which was from 0.8 to 1.8% of dry matter, and total phosphorus, which was from 1.1 to 4.2% of dry matter, recommended using sludge for fertilization. It was also pointed out that sewage sludge should be regularly tested for the dynamics of changes in chemical composition and biological parameters. These are the factors that increase risk and limit the use of sludge for fertilization.

Sign in / Sign up

Export Citation Format

Share Document