·Sludge dewatering can minimize its amount for transportation and even reduce leachate leakage from landfills Wu et al 2020a Currently mechanical dewatering techniques such as belt dewatering centrifugal dewatering and plate and frame dewatering have gained widespread application where industrial sludge encompasses steel and
·Consequently sludge dewatering is a critical step in reducing the volume of WAS to facilitate its proper economic disposal or reutilization [1 2] Developing a high performance dewatering process is essential for alleviating the environmental burden associated with sludge reduction Metal salt coagulants can destabilize the sludge
·A novel approach for sludge deep dewatering via flowing out enhancement but not relying on cell lysis and bound water release Author links open overlay panel Hao Zhang a confirmed the above results Moreover it is noteworthy that when the dosage of G agent was below 50 mg/g DS the heavy metal content in the sludge filtrate Table S2
·Prior to the adsorbent preparation conditioning and dewatering is essential to reduce the water content of sludge as well as the energy consumption associated with water evaporation in the subsequent drying process [12] Chemical conditioning is widely applied prior to the sludge dewatering process to modify the physio chemical properties of sludge and improve
·This review was written based on an in depth literature search and review of journal articles using the Scopus Web of Science and Science Direct databases and concatenation of the keywords Sludge AND Dewatering AND extracellular polymeric substances AND Bioleaching The time horizon for the selection of articles was the last 12 years 2010 to
·Waste activated sludge WAS of the municipal wastewater treatment plants WWTPs is produced in large quantities and proliferates Guan et al 2018 After the traditional mechanical dewatering method the water content of dewatered sludge cake is as high as 75 wt% 85 wt% Wu et al 2017b Deep dewatering of sludge to reduce the water content to
·Thus the primary strategy for increasing sludge dewatering ability is to destroy EPS in the sludge through preconditioning transforming interstitial water to free water Bioleaching plays an important role in removing heavy metal of sludge and polluted soil its potential in improving dewatering performance has been proved in recent years
·As the essential step of sludge treatment dewatering plays significant roles in minimizing the sludge volume facilitating the transportation increasing the calorific value and even reducing the leachate production in landfill sites This paper presents a comprehensive review on the issues related to dewatering of sewage sludge
·This combined treatment method holds promise for achieving deep sludge dewatering under ultrahigh filtration pressure with water content reduced to below 40% The study not only highlights the advantages of using steel slag in combination with Fe 2 /SPS treatment for sludge dewatering but also provides insights into the underlying mechanisms
·Recently the electrochemical technologies with its superior oxidation capability for sludge floc disintegration via direct and indirect oxidation processes have emerged as alternatives for sludge treatment to enhance the dewatering performance Yuan et al 2010 Olvera Vargas et al 2019 Yang et al 2020 The electrochemical process could enhance the
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