scholarly journals Is ceramsite the last straw for sewage sludge disposal: a review of sewage sludge disposal by producing ceramsite in China

2019 ◽  
Vol 80 (1) ◽  
pp. 1-10
Author(s):  
Bifan He ◽  
Guangjin Wang
Keyword(s):  
Sewage Sludge ◽  
Glass Powder ◽  
River Sediment ◽  
Rapid Development ◽  
Sewage Treatment ◽  
Raw Material ◽  
The Sustainable Development ◽  
Urban Sewage ◽  
Advantages And Disadvantages ◽  
Sludge Disposal

Abstract With the rapid development of urbanization, the amount of urban sewage treatment is increasing. Waste activated sludge (WAS) is a by-product of sewage treatment, and its output is increasing year by year. How to properly handle WAS is related to the sustainable development of the sewage treatment industry. The production of ceramsite from WAS is an effective way to realize the utilization of sludge. This paper comprehensively describes the use of WAS as raw material, adding clay, cement, glass powder, shale, coal gangue, river sediment, pulverized fly ash and other auxiliary materials (AM) to produce sintered sewage sludge ceramsite and non-sintered sludge ceramsite. This paper analyzes the advantages and disadvantages of the process of making ceramsite from WAS. The research points out the development prospect of ceramsite from WAS.

scholarly journals Zalety i wady kompostowania osadów ściekowych w porównaniu z termicznym ich spalaniem – studium przypadku

2017 ◽  
Vol 26 (1) ◽  
pp. 125-135 ◽  
Author(s):  
Beata Malczewska ◽  
Bartosz Jawecki ◽  
Sławomir Woźniak
Keyword(s):  
Sewage Sludge ◽  
Thermal Transformation ◽  
Sewage Treatment ◽  
Economic Problems ◽  
Urban Sewage ◽  
Sludge Disposal ◽  
Sewage Sludge Management ◽  
Territorial Government ◽  
Urban Sewage Sludge ◽  
The Right

New challenges for the territorial government in the field of urban sewage sludge oblige to limit it storage. Sewage sludge management is one of the most difficult environmental and economic problems. Therefore, it is important to choose the right technology for the sewage sludge disposal. The purpose of this article is an evaluation of applied disposal methods on sewage treatment sludge plant and comparison of this method (sewage sludge composting) with thermal transformation of sewage sludge. Study confi rms that, in the present case, the composting of sewage sludge is the most advantageous solution.

Estrogenic compounds in Tunisian urban sewage treatment plant: occurrence, removal and ecotoxicological impact of sewage discharge and sludge disposal

Ecotoxicology ◽  
2016 ◽  
Vol 25 (10) ◽  
pp. 1849-1857 ◽  
Author(s):  
Dalel Belhaj ◽  
Khaled Athmouni ◽  
Bouthaina Jerbi ◽  
Monem Kallel ◽  
Habib Ayadi ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Estrogenic Compounds ◽  
Sewage Discharge ◽  
Urban Sewage ◽  
Sludge Disposal

scholarly journals Regulatory and technological prerequisites of the use of sewage sludge for the production of organic fertilizers

2020 ◽  
pp. 162-170
Author(s):  
R. Edgecock ◽  
V. V. Bratishko ◽  
I. V. Zinchenko ◽  
S. H. Karpus ◽  
D. O. Milko ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Municipal Wastewater ◽  
Raw Materials ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Raw Material ◽  
Organic Fertilizers ◽  
Mineral Fertilizers

Annotation Purpose. Summarize the regulatory and technological requirements for the production of organic (organo-mineral) fertilizers on the base of sewage sludge. Methods. Analysis and generalization of the requirements of regulatory documents on the management of organic waste and their use as raw materials for the production of organic fertilizers and soil improvers. Results. The current legislative, departmental and regulatory documentary base in Ukraine concerning the treatment of sediment resulting from biological sewage treatment at municipal wastewater treatment plants for its further use in agriculture as fertilizers is analysed. Indicators are identified and analysed to determine the possibility, feasibility, efficiency and scope of organic fertilizers produced using sewage sludge. The analysis of changes in the content of organic matter and total nitrogen in the sewage sludge during its storage at the sewage treatment plant sites is presented. The technological feasibility of using sludge of different shelf life in composting production has been determined. Conclusions 1. The regulatory framework of Ukraine contains a sufficiently complete list of indicators that should be met by organic raw materials (sewage sludge) for further use as organic fertilizers. Some of these indicators – bio security and heavy metals content – can be improved in the composting process of fertilizers. 2. Fresh sediment, as well as sediment accumulated in the last late autumn and winter periods, is of main value for use as a raw material in the production of organic fertilizers. 3. The use in the production of compost sludge stored on sludge sites for a period of half a year or more requires special control of the process of decontamination. In this case, it is advisable to use additional means of wastewater decontamination. Keywords: heavy metals, manure, humus, decontamination, composting, organic fertilizers, sewage sludge.

Future proof decentralised sludge recycling Elodry-pro®

2016 ◽  
Vol 15 (3) ◽  
pp. 840-848
Author(s):  
B. Geraats ◽  
M. Parnowska ◽  
L. Kox
Keyword(s):  
Sewage Sludge ◽  
Modular Design ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Cost Effective ◽  
Raw Material ◽  
Available Phosphorus ◽  
Low Carbon ◽  
Nox Formation

Abstract At Linz-Unkel (Germany) sewage treatment plant the first full scale state-of-art EloDry-Pro® plant for sewage sludge has been constructed, consisting of the PYREG® reactor and the EloDry® belt dryer. The system is characterised by small footprint, flexibility, modular design and efficient energy management. The sludge dried using an EloDry® belt dryer undergoes staged combustion using the PYREG® module at around 6,500°C. This reduces the sludge to a fraction of its original volume while disinfecting it and removing micro-pollutants such as pharmaceutical residues. The residual ash, which has a high percentage of plant-available phosphorus, is then supplied to the fertiliser industry as a recycled raw material. The working principle of EloDry-Pro® installation, including heat flows of the system, is presented. The paper describes Pyreg®'s advanced emission control systems, preventing NOx formation and removing harmful substances such as mercury and sulphur. The EloDry-Pro® technology is an innovative and cost-effective approach to decentralised thermal recycling of sewage sludge. Both sewage sludge volumes and transportation costs are reduced by up to 90%, therefore making it a low carbon cost-effective alternative to the transportation of sludge and allowing local sludge processing at plants under 100 k population.

Urban Sewage Treatment Process and Selection Principles

2014 ◽  
Vol 641-642 ◽  
pp. 399-402
Author(s):  
Chun Mei Liu ◽  
Zheng Yang Wang
Keyword(s):  
Rapid Development ◽  
Sewage Treatment ◽  
Water Environment ◽  
Modern Society ◽  
Physical And Mental Health ◽  
Treatment Technology ◽  
Urban Sewage ◽  
Selection Principles ◽  
City Water ◽  
The City

With the rapid development of modern society and economy, environmental problems have become increasingly prominent, especially the city water environment worsening, exacerbating the shortage of water resources, affecting people's physical and mental health, which has become the serious restriction factor of sustainable development of the city. This paper mainly discuss from the introduction of city sewage treatment technology and methods.

The effect of lime-dried sewage sludge on the heat-resistance of eco-cement

2016 ◽  
Vol 74 (1) ◽  
pp. 212-219 ◽  
Author(s):  
Wen-quan Li ◽  
Wei Liu ◽  
Hai-hua Cao ◽  
Jing-cheng Xu ◽  
Jia Liu ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Heat Resistance ◽  
Sewage Treatment ◽  
Raw Material ◽  
Partial Replacement ◽  
Cement Manufacture ◽  
Fire Endurance ◽  
Treatment And Disposal ◽  
Dried Sludge ◽  
Microstructural Studies

The treatment and disposal of sewage sludge is a growing problem for sewage treatment plants. One method of disposal is to use sewage sludge as partial replacement for raw material in cement manufacture. Although this process has been well researched, little attention has been given to the thermal properties of cement that has had sewage sludge incorporated in the manufacturing process. This study investigated the fire endurance of eco-cement to which lime-dried sludge (LDS) had been added. LDS was added in proportions of 0%, 3%, 6%, 9%, and 12% (by weight) to the raw material. The eco-cement was exposed to 200, 400, or 600 °C for 3 h. The residual strength and the microstructural properties of eco-cement were then studied. Results showed that the eco-cement samples suffered less damage than conventional cement at 600 °C. The microstructural studies showed that LDS incorporation could reduce Ca(OH)2 content. It was concluded that LDS has the potential to improve the heat resistance of eco-cement products.

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.

scholarly journals EXPERIMENTAL SUBSTANTIATION OF THE HYGIENIC ASSESSMENT METHOD OF THE GEOTUBING OF DEPOSITS FROM URBAN SEWAGE TREATMENT FACILITIES

2019 ◽  
Vol 96 (7) ◽  
pp. 623-626 ◽  
Author(s):  
Khamzat K. Magomedov ◽  
K. B. Fridman ◽  
A. S. Belkin ◽  
S. N. Noskov
Keyword(s):  
Sewage Sludge ◽  
Sewage Treatment ◽  
Road Construction ◽  
Bound State ◽  
Environmental Safety ◽  
Assessment Method ◽  
Toxic Substances ◽  
Urban Sewage ◽  
Sludge Incineration ◽  
Translocation Mechanism

Every day in the city of St. Petersburg there is formed more than 10,000 m3 of sewage sludge. The main mass of deposits is stored at the landfill for storing waste with an area of up to 150 hectares. Toxic substances and pathogens contained in sediments can penetrate into the environment stipulating the significant pollution of the environment. In the arsenal of technologists dealing with the problem of sewage sludge disposal, there are numerous approaches and solutions, for instance: drying sludge, incineration, composting, vermicomposting, eco-concrete fixation. However, tried everything methodological approaches have not found their applications because of the impossibility of decrease in toxicity due to the presence of substances in the resulting substance of 1st and 2nd classes of danger, having a translocation mechanism of transition in plants. And, nevertheless, the problem of sewage sludge cannot be solved by used approaches because of the high toxicity caused by the presence of substances of the 1st and 2nd hazard classes in the obtained substance, for which the translocation mechanism of environmental contamination is characteristic. The aim of our work is the substantiation of the hygienic safety of the utilization of products obtained by geotube technology from deposits at the Northern Station for aeration «Vodokanal-SPb» in road construction. As the object of research there was selected the complex of sludge lagoons of the Northern Station for aeration «Vodokanal-SPb» located in the village of Novosilky. Sanitary-chemical, toxicological, parasitological, bacteriological, radiological. It is possible to observe the binding of ionic forms of ecotoxicants, transition of them to a bound state, which provides for the environmental safety. Helminthological and bacteriological studies show the epidemic safety of the product obtained by geotubing. Geotube technology seems to be the most promising in the treatment of accumulated sludge beds on sewage sludge.

Sewage Sludge Disposal: Current and Future Options

1989 ◽  
Vol 21 (10-11) ◽  
pp. 1113-1128 ◽  
Author(s):  
A. M. Bruce ◽  
R. D. Davis
Keyword(s):  
Sewage Sludge ◽  
Disease Transmission ◽  
Protein Extraction ◽  
Sewage Treatment ◽  
Physical Stability ◽  
Sludge Disposal ◽  
Disposal Options ◽  
Objective Basis ◽  
Treatment And Disposal ◽  
The Uk

Sewage sludge is an inevitable product of all conventional sewage treatment processes. Disposal of sludge in an economic and environmentally-acceptable manner is becoming generally more difficult. Sludge quantities are rising and disposal options decreasing. Disposal will increasingly require positive and careful management. There are four basic destinations for sludge - agriculture, other types of land, the sea or minor outlets. Treatment methods are available for the production of nine basic types of end-product to suit particular disposal requirements. The new EC Directive will regulate sludge to agriculture and will require that all sludge to farmland is treated unless it is immediately buried under the soil. Sludge to agriculture (grassland or arable) is subject to soil metal limits and to the need to minimise the risk of disease transmission. Sludge to landfill is subject to increasing constraints, particularly on physical stability. Sludge to sea is still practised by the UK but is closely controlled by Government licence and a requirement for monitoring. Minor outlets such as oil production, protein extraction etc are only at the experimental level. A computer program (WISDOM) provides a means of evaluating the short/long-term viability of alternative treatment and disposal options to identify the most economic and environmentally-acceptable strategy on an objective basis.

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.  

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