Sludge heat treatment after treatment of drainage wastewater from municipal solid waste landfills

Гончарук, В. В.; Badekha, V. P.; Badekha, A. V.; Kucheruk, D. D.; Pischai, I. Ya.; Sidorenko, O. S.; Shkavro, Z. N.

doi:10.3103/s1063455x11060063

Cited by 2 publications

(2 citation statements)

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“…69 It can also refer to adding skeleton materials that do not participate in chemical reactions to support sludge drainage channels for improving the dewatering ability of sludge. 70 Common physical conditioning includes heat treat- 71 At high temperatures, the water in the sludge is accelerated to evaporate into steam, or the EPS of the sludge floc is decomposed and broken by heat, which promotes the release of the bound water in the sludge. 72 The schematic diagram of high temperature cracking of the EPS of sludge floc is shown in Figure 5.…”

Section: The Methods Of Sludge Conditioning For Dehydrationmentioning

confidence: 99%

“…Heat treatment usually means that the sludge is placed at a high temperature of 40–180 °C for conditioning, to achieve the purpose of improving the sludge dewatering performance . At high temperatures, the water in the sludge is accelerated to evaporate into steam, or the EPS of the sludge floc is decomposed and broken by heat, which promotes the release of the bound water in 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%

Section: The Methods Of Sludge Conditioning For Dehydrationmentioning

confidence: 99%