New Approach for Sewage Sludge Stabilization with Ozone

Kosowski, Patryk; Szostek, Małgorzata; Pieniążek, Rafał; Antos, Piotr; Skrobacz, Karol; Piechowiak, Tomasz; Żaczek, Anna; Józefczyk, Radosław; Balawejder, Maciej

doi:10.3390/su12030886

Cited by 11 publications

(4 citation statements)

References 20 publications

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“…The sludge treated with ozone had an improved sedimentation performance, which had a favorable effect on the separation of mud and water. The gaseous ozone oxidizing agent means that the oxidization process does not affect the effluent quality and has the function of disinfection . In addition, it can effectively oxidize the heavy metals and realize the detoxification of the sludge.…”

Section: The Methods Of Sludge Conditioning For Dehydrationmentioning

confidence: 99%

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Dehydration Performance of Municipal Sludge and Its Dewatering Conditioning Methods: A Review

Jiang

Gao

Zhang

et al. 2023

Ind. Eng. Chem. Res.

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Municipal sludge is an inevitable byproduct during the treatment of wastewater, which is produced by sewage treatment plants in urban residential areas, and it contains pathogens, heavy metals, and other pollutants. Municipal sludge is suitable for application in energy utilization because of its high organic content and relatively low toxic matter. The high moisture content of municipal sludge brings huge difficulties to its harmless disposal and resource utilization. At present, the main method used for sludge dehydration is mechanical dewatering. However, the mud cake produced by this method still has a water content of up to 80%, which does not meet the current rigorous requirements. Therefore, the development of deep dehydration technology for sludge is imperative. In this paper, the basic properties and structure of sludge were summarized. As a key component of sludge flocs, extracellular polymeric substance (EPS) has received much attention in sludge dewatering conditioning. Meanwhile, the influencing factors of sludge dewatering were also fully elaborated, including sludge types, sewage hardness, surface charge, size distribution, and sludge viscosity. And the main methods of sludge dewatering treatment were comprehensively included, namely, the physical method, chemical method, biological method, and combined conditioning methods. The advantages and disadvantages of each method are mentioned, and their application situations were analyzed. Furthermore, comment was provided on the conditioning mechanism, adaptability, prospects, and limitations of the techniques for improving sludge dewatering. This systematic review related to sludge dewatering can not only provide reference information for the conditioning method but also benefit the exploitation of efficient and ecofriendly sludge dewatering technology.

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Section: The Methods Of Sludge Conditioning For Dehydrationmentioning

confidence: 99%

“…The gaseous ozone oxidizing agent means that the oxidization process does not affect the effluent quality and has the function of disinfection. 158 In addition, it can effectively oxidize the heavy metals and realize the detoxification of the sludge.…”

Section: Advanced Oxidation Process (Aop)mentioning

confidence: 99%

Dehydration Performance of Municipal Sludge and Its Dewatering Conditioning Methods: A Review

Jiang

Gao

Zhang

et al. 2023

Ind. Eng. Chem. Res.

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“…The resulting solid and significantly stable product can be easily and safely transported outside the WWTP for further treatment or final disposal. Recently, ozonation and other advanced oxidation processes (AOPs), such as Peroxone, have attracted attention for the chemical stabilization and reduction in RMSS and as a pretreatment prior to the biological stabilization of RMSS [146][147][148][149][150][151][152][153][154].…”

Section: Mss Disposal and Nutrient And Chemical Recoverymentioning

confidence: 99%

Evolution and Prospects in Managing Sewage Sludge Resulting from Municipal Wastewater Purification

Giacomo¹,

Romano

2022

Energies

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Municipal sewage sludge is the residual material produced as a waste of municipal wastewater purification. It is a sophisticated multi-component material, hard to handle. For many years, it has been landfilled, incinerated, and widely used in agriculture practice. When unproperly discharged, it is very polluting and unhealthy. The rapidly increasing global amount of municipal sewage sludge produced annually depends on urbanization, degree of development, and lifestyle. Some diffused traditional practices were banned or became economically unfeasible or unacceptable by the communities. In contrast, it has been established that MSS contains valuable resources, which can be utilized as energy and fertilizer. The objective of the review was to prove that resource recovery is beneficially affordable using modern approaches and proper technologies and to estimate the required resources and time. The open sources of information were deeply mined, critically examined, and selected to derive the necessary information regarding each network segment, from the source to the final point, where the municipal sewage sludge is produced and disposed of. We found that developed and some developing countries are involved with ambitious and costly plans for remediation, the modernization of regulations, collecting and purification systems, and beneficial waste management using a modern approach. We also found that the activated sludge process is the leading technology for wastewater purification, and anaerobic digestion is the leading technology for downstream waste. However, biological technologies appear inadequate and hydrothermal carbonization, already applicable at full scale, is the best candidate for playing a significant role in managing municipal sewage sludge produced by big towns and small villages.

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“…Aerobic stabilization is a common method because of the high water and organic matter content. After aerobic stabilization and pressing, waste sludge still contains a significant amount of water, 70-75% (Bianchini et al, 2015), which makes it unstable and increases transport costs (Kosowski et al, 2020). The composition of stabilized sludge is difficult to define because wastewater properties are variable and, additionally, sludge is a mixture from different phases of wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Stabilized sewage sludge: Sanitary aspects and potential for conversion to biosolids

Jovičić-Petrović¹,

Mijačić²,

Lalević³

et al. 2021

Acta agriculturae Serbica

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The improvement of wastewater treatment techniques is of crucial importance for effluent quality, but it also results in an increased amount of waste sludge. Dehydrated sludge contains organic matter and nutrients, and therefore it can be used in agriculture and bioremediation, but it is considered a potential source of environmental pollution. As the sludge analyzed in the research does not contain impermissible levels of organic and inorganic pollutants, the aim of the research was to examine microbiological, particularly sanitary, aspects and potential for its further use. Microbial diversity was determined by the standard serial dilution technique and selective media, and sanitary quality indicators (total coliforms, fecal coliforms, Escherichia coli and Salmonella spp.) were determined by the MPN method. The abundance of fungi, actinomycetes, and bacteria (ammonifiers, spore-forming bacteria and Pseudomonas spp.) indicate possibilities for further use of the sludge. The chemical analysis included the following parameters: total nitrogen (N), phosphorus in the form of P2O5 (available P), organic carbon (C), C/N ratio, pH, and water content. The chemical composition indicates the potential of sewage sludge to be used as a soil fertilizer, but its C/N ratio is not adequate to enable successful conversion to biosolids by the composting process. The obtained results indicate a significant level of microbiological contamination, which was most pronounced in the centre of the stabilized sludge pile. The research showed the necessity to conduct further studies on the microbial diversity and sanitary aspects of sewage sludge for proper waste sludge management.

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New Approach for Sewage Sludge Stabilization with Ozone

Cited by 11 publications

References 20 publications

Dehydration Performance of Municipal Sludge and Its Dewatering Conditioning Methods: A Review

Dehydration Performance of Municipal Sludge and Its Dewatering Conditioning Methods: A Review

Evolution and Prospects in Managing Sewage Sludge Resulting from Municipal Wastewater Purification

Stabilized sewage sludge: Sanitary aspects and potential for conversion to biosolids

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