scholarly journals Generation, characteristics and disposal of sew age sludge produced on treatment plant of Tatarstan

2019 ◽  
pp. 537-543
Author(s):  
Svetlana Yu. Selivanovskaya ◽  
Venera Z. Latypova
Keyword(s):  
Sewage Sludge ◽  
Industrial Wastewater ◽  
Metal Content ◽  
Treatment Plant ◽  
Chemical Compounds ◽  
Organic Content ◽  
Environmental Damage ◽  
Toxicity Bioassay ◽  
Metal Composition

Treatment of wastewater unavoidably results in the generation of huge quantities of sludge in which pollutants concentrate and which must be disposed of. The aim of this study was to compare the quality of organic matter, the metal composition and toxic organic content in different sewage sludge. The presence of these substances caused environmental damage in soil, plants, groundwater and air. Sewage sludge was periodically sampled from five treatment plant treated municipal and industrial wastewater in common in Almetevsk, Elabuga, Zainsk, Kazan, Chistopol (Tatarstan, Russia). Knowledge of the metal content of the sludge is a key step in selecting or in ruling out the various disposal alternatives. For the approval of possible utilization of sewage sludge as fertilizer the estimation of the chemical compounds has to be supplemented with the toxicity bioassay.

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.

VERMICOMPOSTING TECHNOLOGY FOR STABILIZING THE SEWAGE SLUDGE FROM RURAL WASTE WATER TREATMENT PLANTS

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
V. Lina Cardoso ◽  
C. Esperanza Ramírez ◽  
E. Violeta Escalante
Keyword(s):  
Rural Communities ◽  
Sewage Sludge ◽  
Low Cost ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Microbiological Quality ◽  
Fecal Coliforms ◽  
Nitrogen And Phosphorus ◽  
Sludge Management

There are problems associated with sludge management in small treatment plants (<10 L/s) located in rural communities, due to costly conventional technology for sludge stabilization. Many of these plants have only sludge drying beds. Mexican Institute of Water Technology has proposed developing suitable low-cost technologies, one of which is vermicomposting a biodegradation system using earthworms of the species Eisenia foetida (earthworm) which stabilize sludge and reduce its pathogenicity. The objective of this work is to present two case studies where vermicomposting technology has been applied in Mexico. The first study corresponds to a plant where 4.8 m3/month of sludge are produced; for these wastes, a vermicomposting system was built and installed. The second study is a treatment plant where 9 m3/month of sludge are produced; experimental tests were conducted with sludge and water hyacinth and a vermicomposting system was designed. The vermicomposts were analyzed using parameters defined by Mexican standards. In regards to stabilization, TVS was reduced by 38% and the microbiological quality of the vermicompost was Class A and B, with a reduction in fecal coliforms and Helminth eggs according to NOM-004-SEMARNAT-2002. A CRETI (Corrosivity, Reactivity, Explosivity, Toxicity and Ignitability) analysis (NOM-052-SEMARNAT-2005) was used to show that the process reduced the concentration of releasable sulfides. The agronomic quality of the vermicompost exhibited a high content of organic matter comparable to many organic manures and high content of nutrients such as nitrogen and phosphorus. It is concluded that it is possible to improve the conditions of sewage sludge management in small plants of rural communities with a minimum investment (less than $10,000.00 USD) and with a requirement of a minimum area of 60 to 70 m2 for a production of less than 9 m3/month of dehydrated sludge (80% humidity).

Heavy Metal Potential of Domestic Biological Wastewater Treatment Plant Sludge

2021 ◽  
Vol 4 (1) ◽  
pp. 90-113
Author(s):  
T.D.C. Pushpakumara ◽  
◽  
W.G.T. Sandakelum ◽  
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Metal Content ◽  
Treatment Plant ◽  
Nutrient Content ◽  
Heavy Metal Content ◽  
Treatment Processes ◽  
Secondary Sludge

The use of sludge as fertilizers helps to the recycling of nutrients to the environment due to its beginning from wastewater and therefore relatively high content of nutrients and organic matter. However, wastewater does also contain hazardous compounds like heavy metals and micro pollutants which eventually are separated to the sludge during the treatment processes at the wastewater treatment plant. In order to improve the sludge quality, source tracking is a relatively cheap and effective way to find and eliminate hazardous compounds and prevent them from ending up in the sludge. The aim with this thesis was to investigate the fertilizer potential in sludge from wastewater treatment plant. The sludge is analyzed in terms of nutrient and heavy metal contents as well as physiochemical parameters. In order to determine the potential as fertilizer, the quality of the sludge is compared with other fertilizer alternatives, other sludge types and regulations for sludge use in agriculture. The work with sludge quality improvements in Gaborone is also investigated. Sludge from different stages along the treatment processes were collected in order to see differences in quality related to the treatment. The results shows that the samples of primary an aerobically treated sludge tend to have higher heavy metal content than the secondary sludge. The quality of the dry sludge samples indicates lower nutrient content than both the primary and secondary sludge, but similar heavy metal content. The analysis of dry sludge from indicates a low nutrient value and high heavy metal content in comparison to other selected fertilizer options and sludge from other. The processes for removal of nutrients from the wastewater are an important factor for the nutrient content in the sludge. Keywords wastewater; fertilizers; nutrients; sludge treatment

scholarly journals Application of integrated MBR in a centralized WTP for a chemical industrial park: A case study in China

2018 ◽  
Vol 13 (3) ◽  
pp. 594-598
Author(s):  
Zhang Jinsong ◽  
Liu Jerry
Keyword(s):  
Industrial Wastewater ◽  
Treatment Plant ◽  
Cost Effective ◽  
Chinese Government ◽  
Treatment Processes ◽  
Chemical Industrial Park ◽  
Porous Resin ◽  
Aerated Filter

Abstract Wastewaters from chemical industries usually contain pollutants which are toxic and non-biodegradable. Treatment of chemical wastewaters is always a challenging topic in view of the stringent environmental regulations that have to be adhered to. Since 2014, the Chinese government has been continuously tightening the industrial wastewater (IWW) discharge standards, which requires improved quality of IWW effluent. This poses great challenges to the chemical industries in China, especially to many of the chemical industry clusters where the wastewaters usually contain more toxic and non-biodegradable contaminants. Membrane bioreactor (MBR) technology has been proved to be a reliable and cost-effective solution for the treatment of IWW. However, MBR alone could not effectively remove non-biodegradable organics, it needs to be integrated with advanced oxidization process and/or other physical-chemical treatment processes to improve the overall treatment efficiency. In this paper, studies on the performance of different integrated MBR processes in Industrial Wastewater Treatment Plant-A (IWTP-A) will be discussed, including Fenton + MBR, MBR + ozonation + biological aerated filter, and MBR + porous resin sorption.

Online monitoring of OUR, KLa and OTE indicators: practical implementation in full-scale industrial WWTPs

2009 ◽  
Vol 60 (2) ◽  
pp. 459-466 ◽  
Author(s):  
I. Irizar ◽  
J. A. Zambrano ◽  
D. Montoya ◽  
M. De Gracia ◽  
R. García
Keyword(s):  
Industrial Wastewater ◽  
Treatment Plant ◽  
Theoretical Background ◽  
Full Scale ◽  
Practical Implementation ◽  
Short Term ◽  
Oxygen Transfer Efficiency ◽  
Term Data

Based on on/off aeration strategies, this paper describes all the steps involved in the development and implementation of three identification algorithms aimed at monitoring the oxygen uptake rate (OUR), the oxygen mass-transfer coefficient (KLa), and oxygen transfer efficiency (OTE) in aerated biological reactors. Firstly, a detailed explanation of the theoretical background behind every algorithm is given. In addition, practical issues have also been taken into account in order to guarantee the quality of estimations. Finally, the three algorithms have been implemented and validated in a full-scale industrial wastewater treatment plant with satisfactory results. Although short-term noise has been observed in the estimated data (especially at high OURs), the medium and long-term data trajectories have been correctly reproduced.

scholarly journals Identification of Industrial Sewage Sludge based on Heavy Metal Profiles: A Case Study of Printing and Dyeing Industry

2021 ◽  
Author(s):  
Xufeng Zhang ◽  
Shuyu Chen ◽  
Fangting Ai ◽  
Limin Jin ◽  
Ningzheng Zhu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Eastern China ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Accuracy Rate ◽  
Metal Composition ◽  
Industrial Sewage ◽  
Industrial Sewage Sludge

Abstract The illegal disposal of industrial sewage sludge has caused serious environmental pollution. To develop identification techniques of industrial sewage sludge based on the characteristic fingerprints carried by sewage sludge itself is a promising method that is helpful to clarify the responsibility of illegal enterprises. In this study, heavy metal composition and speciation of sewage sludge from industries (including printing and dyeing industry and other industries) and municipal sewage treatment plant located in eastern China were determined and their performance of classification was evaluated by principal component analysis (PCA) and linear discrimination analysis (LDA). Results showed that heavy metal composition and speciation can be an effective tool for distinguishing sewage sludge between printing and dyeing industry and other industries, with an accuracy rate of 82.9% and 100%, respectively. Antimony (Sb) and zinc (Zn) are two characteristic heavy metals, which can be used to identity sewage sludge in printing and dyeing sub-industries with an accuracy rate of 90%. The combination of these three methods may be a precise and promising tool for identification of sewage sludge between industries and sub-industries. This study developed a potential method for tracing the industrial sources of sewage sludge and establishing the identification database of industrial sewage sludge, and provided technical support for the government to supervise the illegal dumping and disposal of industrial sewage sludge.

scholarly journals The Effect of Covid 19 on the Performance of Industrial Wastewater Treatment Plant

2020 ◽  
Author(s):  
Elif Hatice Gürkan
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Labour Force ◽  
Treatment Plant ◽  
Industrial Zone ◽  
Transportation Energy ◽  
Industrial Wastewater Treatment ◽  
Industrial Zones ◽  
The Impact

Abstract Samsun is Black Sea Region's one of the biggest industrial and trade cities with its proximity to transportation, energy, infrastructure and major markets. It contributes to the national economy in all sectors with six Organized Industrial Zones, transportation and the quality of the labour force opportunities and industrial investments. This study aims to examine the impact of COVID-19 on the industrial wastewater treatment in Samsun Central Organized Industrial Zone. It is a roadmap for post-epidemic science at the same time.

scholarly journals Sewage Sludge Management in a Sewage Treatment Plant

2019 ◽  
Vol 29 (3) ◽  
pp. 209-217
Author(s):  
Dariusz Królik ◽  
Przemysław Wypych ◽  
Jakub Kostecki
Keyword(s):  
Sewage Sludge ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Sludge Management ◽  
Methane Fermentation ◽  
Sewage Treatment Plants ◽  
Sewage Sludge Management

Abstract Sewage sludge produced in municipal sewage treatment plants, because of its physicochemical and sanitary properties, is a serious threat to the environment. In order to neutralize it, various methods of processing are used, which directly affect the quantity and quality of produced sewage sludge, which in the final stage can be used naturally. Properly managed sludge management is presented on the example of a sewage treatment plant, conducting the methane fermentation process with the production of biogas.

Separation of Emulsified Oil from Industrial Wastewater Using Poly Silicate Ferro-Aluminum Sulphate (PSFAS): A Novel Methodology for the Attainment of Very High Separation Efficiency

2021 ◽  
Author(s):  
Anup Kumar Bairagi ◽  
Kollati Prudhvi Ravikumar ◽  
Abanti Sahoo ◽  
Soumya Sanjeeb Mohapatra ◽  
Sangam Agrawal
Keyword(s):  
Industrial Wastewater ◽  
Metal Content ◽  
Separation Efficiency ◽  
Contaminated Water ◽  
Emulsified Oil ◽  
Aluminum Sulphate ◽  
Very High ◽  
High Separation ◽  
Maximum Separation

Abstract The large amount of wastewater generated from textile industries, petroleum industries, chemical industries contains heavy metals, suspended solids, hazardous waste, oils, fatty acids, dyes, pigment etc. It is very important to improve the quality of contaminated water before it discharges into the water sources or use. In the current work, an efficient methodology has been developed to separate emulsified oil from wastewater. The emulsified oil is tried to separate by using poly silicate Ferro aluminium sulphates, a flocculent. In addition to the above, the maximum separation efficiency for the devolved process is also revealed. Using PSFA, up to 93.5 % separation efficiency is achieved, and the discussed methodology can separate emulsified forms of the oil without altering the efficiency. The dissolved solid and metal content are also considered as the controlling parameters for the separation efficiency. The optimum TDS and the metal content must be maintained at 560 mg/L and 2 mg/L, respectively, to attain maximum separation efficiency.

Upgrading of a Wastewater Treatment Plant in a Chemical Factory

1986 ◽  
Vol 18 (1) ◽  
pp. 75-82 ◽  
Author(s):  
P. Benedek ◽  
I. Takács ◽  
I. Vallai
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Experimental Period ◽  
Organic Content ◽  
Carbon Addition ◽  
Activated Sludge System ◽  
Micropollutant Removal ◽  
Chemical Factory

Full-scale experiments were conducted to study the wastewater treatment plant of a chemical factory. The objective of the study was to upgrade the overloaded biological activated sludge system by powdered activated carbon addition. Improvement of the organic micropollutant removal characteristics was also expected on the basis of previous experiments. During the three months experimental period the applicability and benefits of the process were proved, even under unfavourable conditions. Operation of the plant became stable, the quality of effluent improved about 30% in organic content and in several micropollutants. The upgraded unit could be overloaded by about 20% without any decrease in efficiency.

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