The effects of aging for improving wastewater …
The effects of aging for improving wastewater sludge electro-dewatering performances | Semantic Scholar. DOI: 10.1016/J.JIEC.2019.08.049. Corpus ID: …
اقرأ أكثر
Electroosmotically Enhanced Sludge Pressure Filtration
Yu Zhang, Guanghu Lian, Chunying Dong, Meiqiang Cai, Zhijun Song, Yuejing Shi, Liguang Wu, Micong Jin, Zongsu Wei, Optimizing and understanding the pressurized vertical electro-osmotic dewatering of activated sludge, Process Safety and Environmental Protection, 10.1016/j.psep.2020.05.016, (2020).
اقرأ أكثر
Numerical Evaluation of Optimal Approaches for Electro-Osmosis Dewatering
Abstract. A newly developed numerical model is used to identify and evaluate optimum electrode configurations for electro-osmosis dewatering, as well as to evaluate approaches such as current ...
اقرأ أكثر
Cationic polyacrylamide (CPAM) enhanced pressurized vertical electro
Electro-dewatering process, a promising and fascinating approach to intensify mechanical dewatering, has attracted considerable attention ... On the basis of PARAFAC analysis, four fluorescence components were identified at Ex/Em of 225–245/330–350 (peak A), 280/340 (peak B), 280/420 (peak C), and 360/440 (peak D) ...
اقرأ أكثر
ELECTRO‐DEWATERING OF SLUDGE UNDER …
During the electro‐dewatering process, pressure had a significant contribution to water reduction in the final sludge cake in experiments using raw sludge …
اقرأ أكثر
Sewage Sludge Electro-Dewatering Treatment—A Review
The study was conducted to evaluate the impact of pressure-driven electro-dewatering (EDW) on improving sludge characteristics related to disposal in agriculture, including biological stability, pathogen availability, heavy metals concentrations and nutrients content. ... 225–234. polyelectrolytes. Desalination 2008, 227(1–3), 103–110. ...
اقرأ أكثر
Impact of process parameters and sludge properties …
The results showed that the main parameters that controlled the electro-dewatering behavior were measured current, conductivity and zeta potential of sludge. …
اقرأ أكثر
Electro-dewatering of wastewater sludge: An investigation …
Compared to conventional dewatering techniques, electrical assisted mechanical dewatering, also called electro-dewatering (EDW) is an alternative and an effective technology for the dewatering of sewage sludge with low energy consumption. The objectives of this study were to evaluate the dewatering …
اقرأ أكثر
Effects of Piecewise Electric Field Operation on Sludge Dewatering …
Electro-dewatering (EDW) is an energy-efficient method for sludge dewatering. In this study, effects of piecewise electric field operation on EDW were investigated by experiments and simulation.
اقرأ أكثر
Coupling electro-dewatering and low-temperature air …
When 35 V voltage was applied for sludge electro-dewatering, it can directly reduce the water content to about 55 wt% within 15 min, and then air-drying to 20 wt% water content took about 100 min ...
اقرأ أكثر
ELECTRO‐DEWATERING OF SLUDGE UNDER PRESSURE AND NON‐PRESSURE CONDITIONS
The electro‐dewatering method is regarded as a promising approach to reduce the water content in sludge. Laboratory scale non‐pressure and pressure‐driven dewatering reactors were set up to study the dewatering rate in different types of sludge and the water content in the final sludge cake after electro‐dewatering process.
اقرأ أكثر
Coupling electro-dewatering and low-temperature air …
And if the electro-dewatering technology was applied to firstly dewatering to about 60.0 wt%, then the air-drying method was used to dry to 10.0 wt% water content, the energy consumption was only ...
اقرأ أكثر
Effect of sludge conditioning by microbial fuel cell on electro
Microbial fuel cell conditioning is newly coupled with sludge electro-dewatering. • A maximum output power density of 436 mW/m 3 was observed during conditioning. • Longer conditioning time yields better dewatering effect and recovers more resource. • Conditioned sludge moisture content decreases from 76.5 % to 54.8 % after …
اقرأ أكثر
Electro-dewatering of wastewater sludge: Influence of the …
Electro-dewatering (EDW) is an efficient and energy-saving technology for deep dewatering of sludge. It is significantly influenced by the physicochemical properties (e.g., conductivity, pH and zeta potential) of sludge, which can be altered by conditioning. In this study, sludge conditioning by microbial fuel cell (MFC) was innovatively ...
اقرأ أكثر
Electro-dewatering of steel industrial sludge
Electro-dewatering (EDW) is regarded as one of the most efficient and cost-effective technical solutions for sludge deep dewatering [8]. The solid surface of sludge is commonly negatively charged, surrounded by a layer of liquid with opposite charges for charge neutralization, which causes the sludge system to form a double electric layer.
اقرأ أكثر
(PDF) Identification of Moisture Components of Slurry
Electro-dewatering (EDW) is a hybrid technology for separating liquids from solids in the wastewater sludge dewatering process. EDW has excellent prospects because it is able to remove water from ...
اقرأ أكثر
Variations of moisture and organics in activated sludge …
The feasibility of using Fe 0 /S 2 O 8 2− conditioning (zero valence iron (ZVI)/persulfate (ps)) integrated with horizontal electro-dewatering (HED) to improve the dewaterability of activated sludge (AS) was evaluated. The removal and migration of free and bound water in the ZVI/ps–HED process were determined, along with the organic …
اقرأ أكثر
Impact of Joule Heating and pH on Biosolids Electro-Dewatering
Electro-dewatering (ED) is a novel technology to reduce the overall costs of residual biosolids processing, transport, and disposal. In this study, we investigated Joule heating and pH as parameters controlling the dewaterability limit, dewatering rate, and energy efficiency. Temperature-controlled electrodes revealed that Joule heating enhances …
اقرأ أكثر
Effects of voltage and pressure on sludge electro …
As an emerging deep-dewatering process, electro-dewatering technology is capable of reducing the MC of sludge to below 60% by applying electric field during …
اقرأ أكثر
Carbon-based materials reinforced waste activated sludge electro
Electro-dewatering (ED) is an attractive technology for enhancing dewaterability and improving the sustainability of waste activated sludge (WAS) handling. However, electrically assisted mechanical dewatering processes consume more energy and the extracellular polymeric substance (EPS) dissolution caused by electrochemical …
اقرأ أكثر
Sewage sludge electro-dewatering
Electro-dewatering is a process in which low direct current (DC) electric field is applied through the sludge segment to cause an electroosmotic phenomenon that is …
اقرأ أكثر
Electro-dewatering of sludge under pressure and non
Electro-dewatering (EDW) is an emerging dewatering method which is capable of increasing the dry solid content of sludge up to 70 wt% [10], and it has been recommended as a substitute [10] [11 ...
اقرأ أكثر
Sewage sludge electro-dewatering | Request PDF
According to literature, after electro-osmosis dewatering, values of energy consumptions found for types of sludge with an initial DS value lower than 13% are usually under 400 Wh/kg H 2 O. These ...
اقرأ أكثر
Electro-osmosis dewatering as an energy efficient …
In recent times, there has been a rise in interest on the applications of electro-technology based food processing methods. With drying in food industries being an energy intensive process with huge environmental impacts, the objective of this study was to design and develop a purpose-built laboratory system, for experimentally …
اقرأ أكثر
Effects of temperature variation on wastewater sludge electro-dewatering
Sludge electro-dewatering (SED) is an effective volume reduction method for wastewater sludge before disposal or recycling. ... Compared with another two pictures (Fig. 10 a and b), aromatic proteinⅠsubstance was newly found at Ex/Em of 225–230/305-310 nm (peak C), and tyrosine & protein-like substance was located at Ex/Em of …
اقرأ أكثر
Electro-dewatering of activated sludge: Electrical resistance …
However, the electro-dewatering technology is still not commonly used in industry. In a recent paper, Citeau et al. (2016) highlighted four main problems that hampered the development of the EDW technology: " (1) significant risk of ohmic heating, (2) high electric energy consumption at terminal stages of the dewatering, (3) …
اقرأ أكثر
(PDF) Electro-dewatering (EDW) as Hybrid Dewatering …
Electro-dewatering of sewage sludge with pulsating direct current (PDC-dewatering) was conducted to investigate the effects of pulsating frequency (0.01-60 Hz) and duty cycle (DTC) (20-) on ...
اقرأ أكثر
Correlation and mechanism of extracellular polymeric
Electro-dewatering (ED) is an attractive technology for enhancing dewaterability of waste activated sludge (WAS), and the distribution and composition of EPS and secondary structure of extracellular protein in sludge has a great influence on the sludge dewaterability. Therefore, in order to optimize and regulate sludge ED process, it is ...
اقرأ أكثر
Impact of process parameters and sludge properties on electro
By comparison, an increase of applied voltage was more effective for electro-dewatering process of sludge C but at the expense of higher energy consumption, while sludge A and B were more inclined to improve the electro-dewatering effect by extending the dewatering time. ... {2022}, volume={40}, pages={213 - 225}, url={https://api ...
اقرأ أكثر
Coupling electro-dewatering and low …
Sludge electro-dewatering technology utilizes electric energy to drive electro-migration of water molecules10,11. Recently, it was extensively studied7,12,13 and also occupied a …
اقرأ أكثر