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.

The Ruhrverband sewage sludge disposal concept in the conflict between European and German standards and regulations

2005 ◽  
Vol 52 (10-11) ◽  
pp. 247-253
Author(s):  
P. Evers ◽  
F. Schmitt ◽  
D.R. Albrecht ◽  
N. Jardin
Keyword(s):  
Sewage Sludge ◽  
River Basin ◽  
Agricultural Land ◽  
Wastewater Treatment Plants ◽  
Integrated Water Resources Management ◽  
Toxic Substances ◽  
Sludge Incineration ◽  
Sludge Disposal ◽  
The Face ◽  
Water Association

The Ruhrverband, acting as a water association responsible for integrated water resources management within the entire natural river basin of the Ruhr, operates a network of 83 wastewater treatment plants (WWTPs) and connected sludge disposal facilities. According to German regulations, the disposal of sewage sludge containing more than 5% of organic dry solids will be prohibited as of 1 June 2005. In Germany, the only future alternative to incineration will be the agricultural utilization of sludge. However, this way of sludge disposal is presently the subject of critical discussions in Germany because of the organic and inorganic toxic substances, which may be contained in sewage sludge, despite the fact that very stringent standards are to be met by agricultural uses. On the other hand, application of sewage sludge to agricultural land is explicitly supported by the European Sewage Sludge Directive 86/278/EEC. In the face of this controversial situation the Ruhrverband has initiated, in 2000, the development of a comprehensive and sustainable sludge and waste disposal concept for all wastewater facilities it operates in the entire Ruhr River Basin. The concept includes de-central sludge digestion and dewatering and subsequent transport to two central sludge incineration plants. It is expected that in future not more than 5% of all sludges produced in Ruhrverband's WWTPs will be used in agriculture. That means, the major part of 95% will have to be incinerated.

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 Neutralization of sewage sediments by utilization of steel industry wastes

2019 ◽  
Vol 75 (2) ◽  
pp. 247-251
Author(s):  
A. S. Vodoleev ◽  
M. A. Zakharova ◽  
O. S. Andreeva ◽  
E. S. Burimova
Keyword(s):  
Steel Industry ◽  
Sewage Treatment ◽  
Water Soluble ◽  
Toxic Substances ◽  
Mixing Conditions ◽  
Urban Sewage ◽  
Effect Of Additives ◽  
Soluble Ions ◽  
Water Soluble Ions ◽  
Modern Ecology

Utilization of sewage sediments as a soil modifier is one of effective ways of man-caused disturbed lands reclaiming. To meet modern ecology requirements to reclaimed territories, the sediments must be safe by sanitary indices, have good organoleptic and grain-size properties, apart from being correspondent to norms by heavy metals and other toxic substances content in them. Wastes of urban sewage treatment plants were studied, as follows: raw sediments; excessive active mud, a mixture of wastes. Wastes of JSC EVRAZ ZSMK operation were used as neutralizing additives, as follows: aspiration dust of limestone burning plant, blooming scale. Studies showed a significant decrease in the content of water-soluble compounds of zinc, lead, copper, fluorine due to their precipitation when reacting with the added additives. The effectiveness of the deposition depends on the type of additive, its content, mixing conditions. By simply mixing of the neutralizing additive with the sample under investigation, a decrease of concentration of water-soluble compounds of zinc, copper, and fluorine was achieved. The selective effect of additives on individual elements established. Lime dust provided an excellent effect on zinc – a decrease by 50%, but had no effect on copper. The addition of scale led to a 25% reduction in the content of water-soluble copper, but did not lead to zinc precipitation. Regarding fluorine, lime was significantly more effective (a decrease by 53%) comparing with scale (a decrease of 27%). The total reduction of water-soluble compounds of the elements under study was 32.2% for lime and 32.6% for scale. Mixing the raw sediment with a neutralizing additive under heating conditions contributed to a significant increasing effect regarding copper: the decrease of its water-soluble ions down to 77% was obtained. 

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.  

scholarly journals Heavy metals availability and soil fertility after land application of sewage sludge on dystroferric Red Latosol

2013 ◽  
Vol 37 (6) ◽  
pp. 512-520 ◽  
Author(s):  
Rodrigo Santos Moreira ◽  
Ronaldo Luiz Mincato ◽  
Breno Régis Santos
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Sewage Sludge ◽  
Sewage Treatment ◽  
Exchange Capacity ◽  
Land Application ◽  
Urban Sewage ◽  
Randomized Design ◽  
Red Latosol ◽  
Insoluble Compounds

Sewage sludge is the solid residue obtained from urban sewage treatment plants. It is possible to use the sludge in a sustainable way as fertilizer and as soil conditioner due to its high levels of organic matter and nutrients. Besides pathogens and volatile organic compounds, the residue may also contain heavy metals which may accumulate and contaminate crops and the food chain. The aim of this study was evaluates the changes in the fertility of dystrophic Red Latosol and in the availability of heavy metals following application of sewage sludge. It was assessed whether organic matter supplied to the soil as large amounts of sewage sludge would decrease availability of heavy metals in the soil due to of insoluble compounds formation. From this, an experiment was carried out in polyethylene pots using lettuce plant for test. Sewage sludge were applied to the soil in concentrations equivalent to 60, 120 and 180 t ha-1, and a control without sludge, in four replicates, in a completely randomized design. The results show that sewage sludge led to an increase of organic matter contents, of the cation exchange capacity (CEC) and of nutrients found in the soil. It also improved plant growth up to a concentration of 120 t ha-1. Availability of heavy metals, however, was reduced in sludge concentrations starting with 120 t ha-1.

Study of Adsorbent Derived from Sewage Sludge Incineration Residue for the Removal of Ni2+ in Wastewater

2011 ◽  
Vol 474-476 ◽  
pp. 158-161 ◽  
Author(s):  
Jin Yong Liu ◽  
Xu Nan Ning ◽  
Zuo Yi Yang
Keyword(s):  
Sewage Sludge ◽  
Room Temperature ◽  
Ph Value ◽  
Removal Rate ◽  
Low Cost ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sludge Incineration ◽  
Incineration Residue

Sewage sludge incineration residue was obtained from a sewage treatment plant in Guangzhou and used as a low-cost sorbent for removing Ni2+ from wastewaters. The adsorption effectiveness and their factors of Ni2+ in aqueous solutions were simulated detailed using the adsorbents of the sludge incineration residue. The simulation contents and the factors included the adsorption time, the pH of solution and the dosage of adsorbents and so on. The results showed that at room temperature, the adsorption equilibrium of Ni2+ can be achieved in 6h and the best pH value of the solution was about 7.0. The removal rates of Ni2+ were increased with the adsorbent concentration increasing and the optimal concentration of adsorbent was 10g/L with the initial concentration of Ni2+ less than 30mg/L.At the best adsorption conditions, the removal rate of Ni2+ reached more than 70%.

Potential Utilization of Sewage Sludge

1990 ◽  
Vol 22 (12) ◽  
pp. 277-285 ◽  
Author(s):  
M. A. Aziz ◽  
Lawrence C. C. Koe
Keyword(s):  
Sewage Sludge ◽  
Building Materials ◽  
Sewage Treatment ◽  
Road Construction ◽  
Total Production ◽  
Subgrade Soils ◽  
Sewer Systems ◽  
Alternative Means ◽  
Dewatered Sewage Sludge ◽  
City State

Singapore, a tropical-island city-state, is served by six modern sewage treatment plants with a combined design capacity of around 900,000 m3/day. Currently, 96.5 percent population of Singapore is served by sewer systems. Total production of raw sludge and digested dewatered sludge from six sewage treatment works in 1988 was about 2,546,000 m3 and 39,000 m3 respectively. Mast of the dewatered sewage sludge is used as a soil conditioner and landfilling. Since land is limited in Singapore, alternative means of disposal of dewatered sewage sludge are essential. Therefore, studies were conducted to investigate the feasibility of using dewatered sewage sludge for producing building materials and products like aggregates, bricks, paving blocks, tiles, drain sections and pipes. Studies were also conducted to use sewage sludge as a conditioning additive to improve the characteristics of poor subgrade soils for road construction. Attempts were also made to utilize sewage sludge as a filler material in concrete and bituminous mixes. Findings of these investigations have shown encouraging results. This paper presents the results of these studies on potential application of sewage sludge for beneficial uses.

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.

Removal of Cu2+ in Aqueous Solutions Using Sludge Incineration Slag as an Adsorbent

2011 ◽  
Vol 55-57 ◽  
pp. 308-311 ◽  
Author(s):  
Jing Yong Liu ◽  
Shui Yu Sun ◽  
Rong Xue Zhang ◽  
Sheng Zhong ◽  
Min Ting Chen
Keyword(s):  
Sewage Sludge ◽  
Aqueous Solutions ◽  
Adsorption Equilibrium ◽  
Ph Value ◽  
Removal Rate ◽  
Low Cost ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sludge Incineration

Sewage sludge incineration slag, the waste generated in sewage sludge incineration, was obtained from a sewage treatment plant in Guangzhou and used as a low-cost sorbent for removing Cu(Ⅱ) from wastewaters. The adsorption effectiveness and their factors of Cu2+ in aqueous solutions were simulated detailed using the adsorbents of the sludge incineration slag. The simulation contents and the factors included the adsorption time, the pH of solution and the dosage of adsorbents and so on. The results showed that at 30 °C, the adsorption equilibrium of Cu2+ can be achieved in 6h and the best pH value of the solution was about 4.5-5.5. The removal rates of Cu2+ were increased with the adsorbent concentration increasing and the optimal concentration of adsorbent was 20-30g/L with the initial concentration of Cu2+ less than 25mg/L.At the best adsorption conditions, the removal rate of Cu2+ reached more than 80% and the adsorption capacity was 0.83-1.25mg/g.

scholarly journals Sewage Sludge as Inhibitor of the Formation of Persistent Organic Pollutants during Incineration

2021 ◽  
Vol 13 (19) ◽  
pp. 10935
Author(s):  
Juan A. Conesa
Keyword(s):  
Sewage Sludge ◽  
Capital Investment ◽  
De Novo ◽  
Sewage Treatment ◽  
Waste Incineration ◽  
Sulphur Compounds ◽  
Urban Sewage ◽  
Chemical Inhibitors ◽  
Dried Sludge ◽  
Inhibitor Compounds

With the objective of suppressing dioxins and furans (PCDD/Fs) emission in municipal solid waste incineration plants (MSWI), different chemical inhibitors have been tested. Among these inhibitors, nitrogen and sulphur compounds can significantly suppress PCDD/Fs formation via de novo synthesis, which gives very interesting results with very little capital investment. In recent years, the possibility of using waste rich in nitrogen and/or sulphur as a source of inhibitor compounds has been considered, and thus has reduced the emissions of pollutants while the waste is treated. The effect of adding sludge from urban sewage treatment plants in three variants has been specially studied: directly mixing the waste, using the decomposition gas of the previously dried sludge, and using the decomposition gas of the sludge together with other inhibitors such as thiourea. Reduction of emissions in laboratory tests using model samples indicated the efficiency to be higher than 99%, using sewage sludge (SS) as an inhibitor whereas, in actual MSWI plants, the efficiency can be as high as 90%.

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