An analytical groundwater flow model is used to simulate the flow process in the subsurface and identified results indicated that the DE-based solution approach provides slightly better results than those obtained by using the HS- based solution approach. In this study, a linked simulation–optimization approach is proposed for …
Impacted by groundwater, faults, lithology, and other factors, the slope of the Shengli no. 1 open-pit coalmine has been in a state of instability. Among these factors, groundwater in the quaternary aquifer is considered primary. Thus, an optimum design for dewatering well pumping rates is presented in this paper. A two-dimensional …
Coal seam gas (CSG), as a type of unconventional gas resource, is playing an increasingly important role in energy generation and transition to renewables, as the world takes action to meet the climate change challenge. To produce CSG, the reservoir first needs to be dewatered, but unreasonable dewatering rates can lead to various …
The optimized dewatering scheme with a curtain depth of 60 m and a hydraulic conductivity of 0.00518 m/d, and four rows of dewatering wells with an equal row spacing of 40 m, well depth of 50 m ...
1. Introduction. 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 …
Electro-dewatering technology (EDW) exhibits promising prospects for oily sludge reduction treatment, owing to its remarkable dewatering efficiency. Unlike conventional oily sludge dewatering methods, EDW eliminates the need for chemical additives, mitigating the risk of secondary contamination. This study comprehensively …
The multi-objective optimization evaluation system based on AHP is constructed from the three aspects of dewatering cost, the impact of settlement on the environment, and the safety and stability ...
• Polymer use for dewatering (screw press) and thickening (GBT) Problems with existing polymer system • Struggled to make proper polymer solution • Polymer …
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Thus, the theoretical basis for agent screening and process optimization of sludge dewatering remains poorly understood. These models mainly use indicators such as CST and SRF to characterize the sludge dewatering performance, which has significant differences from the filtration process of actual engineering dewatering performance, …
The purpose of the dewatering system is to increase the concentration of the solid discharge removed from the pulp in order to increase the amount of water recovered. Owing to several factors, efforts are being made to increase the efficiency of the recycling of 'used' water (Rao and Finch, 1989): (1) mineral processing plants can consume a ...
The EPA is conducting a live monthly webinar series and has a library of recorded webinars for your viewing, check it out for water and wastewater. Water: Webinar Harmful Algal Blooms. Tuesday, March 26th - 1:00-2:30 CST. Flyer Register. Wastewater: Webinar Monday, January 22, at 12:00-1:30 CST. This is a statement from EPA website on CEH ...
Dewatering and water recycling operations in mineral concentration processes lead to not only cost-effective water use, but also less waste disposal to the environment. In this study, optimization of dewatering process in Zareshouran gold processing plant is carried out using hydrocyclone containing circuit. For this purpose, 12 experiments using 4 spigots …
The optimization scheme for dewatering engineering was determined under hydrodynamic, leakage strength, and ground settlement constraints. The filter length of the corresponding optimization scheme was 12 m, and the suitable depth of the waterproof curtain was 14–16 m. Our results provide an effective solution and method for …
Dewatering allows excavations to be made in both dry and stable conditions below the groundwater level, which is almost always required for construction projects. Pumping from wells or sumps and low permeability …
Alabama Water Environment Association (AWEA) and Alabama Water Pollution Control Association (AWPCA) recognized Alabama Water Utilities' facilities with multiple awards. The Alabama Water Environment Association (AWEA) awarded the Riverview Water Resource Recovery Facility (WRRF) a first-place excellence award, and …
Through dewatering process energy optimization, high moisture gasification fine slag can be removed about 15% water within 30s and energy consumption of efficient dewatering is 2.63 kJ/g which is much lower than that of drying. Efficient dewatering is benefit to the GFS recycling which reduces hazardous materials release …
Although Rao et al. (2021) used pressurized electro-dewatering with constant voltage gradient mode (G-PEDW) to achieve the effect of low M c and E c at the same time, the parameter optimization, multi-factor analysis and model building were not considered which are very important for the dewatering guidelines. Therefore, the …
Design optimization of construction dewatering has important values in protecting the surrounding environment and reducing the engineering cost. The existing dewatering design methods are mostly based on the optimization of pumping rate needed to maintain a stable water level, while the drop and rise of water level are not considered …
@article{Sun2024ConfinedAD, title={Confined aquifer dewatering optimization with a modified simulation–optimization method capable of determining …
Optimization of wastewater dewatering then typically involves maximizing throughput, minimizing costs and maximizing separation. Optimizing the Dewatering Process. …
The motion of clay particles under the influence of an electric field was first reported by Reuss in 1808 [1], representing an early application of the Volta cell reported in 1800 [2]. Electrokinetic dewatering has been an on-going topic of research for dewatering effluent from mining operations such as phosphatic clay.
In order to achieve the optimization of the entire filtration and dewatering process, we obtained enough data from the industrial filtration and dewatering system, and in the industrial simulation results all the machine learning models performed considerably, SVR achieves the best accuracy in industrial simulation, and the simulated mean ...
The results show that the groundwater simulation–optimization approach can be adopted to attain optimized dewatering system designs and gives reasonable …
Optimization of sludge conditioning and dewatering is a continuing challenge for wastewater treatment plants. This study investigated the use of an in-line UV–vis spectrophotometer to optimize the polymer dose during sludge dewatering. The study established a relationship between the optimum polymer dose and residual …
Dewatering is the process of removing water from solid material or soil by wet classification, centrifugation, filtration, or similar solid-liquid separation processes. This process is often used in the construction industry to remove water from hardened concrete, soil, or other materials and enable the reuse of construction materials.
Improves Sludge Dewatering: Case Studies 2018 Joint PA-AWWA/PWEA/PMAA Water and Wastewater Technology Summit ... Annual Average Dewatering Cost (2 011-2014) = $3.7M K. Tagney and R. Gupta, Reducing Dewatering Costs through Optimization Program, 2017 WEFTEC. Dewatering Cost at EMWD - $3.7M/yr Polymer Cost - …
Simulation-optimization methods are widely used in dewatering optimization. However, traditional simulation-optimization methods do not address the optimization of well screen length and depth. This study proposes a modified simulation-optimization method for confined aquifer dewatering optimization, which is capable of determining the optimal …
Dewatering is an important step in the process of sludge treatment and disposal. The selection of its conditioning methods and dewatering technologies …
Related Information. Centrifugal thickening and dewatering of sewage sludge is a high speed process that uses the force from rapid rotation of a cylindrical bowl to separate wastewater solids from liquid to produce a non-liquid material referred to as "cake.". Dewatering wastewater solids reduces the volume of residuals, improves …
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Optimizing Polymer Mixing/Activation Improves Sludge Dewatering: Case Studies. Yong Kim, Ph.D. Technical Director UGSI Chemical Feed, Inc. 2018 Joint PA …
Simulation-optimization methods are widely used in dewatering optimization. However, traditional simulation-optimization methods do not address the optimization of well …
Conventional mechanical dewatering has the disadvantage of adding a large amount of chemicals which results in secondary pollution and negative effects on energy recovery from SS. In this study, the performance of SS dewatering with supercritical CO2 (scCO2) was evaluated comprehensively, and the effects of operation parameters, …
simulation for the zonation dewatering of complex dual structural stratum to come up the optimal dewatering scheme (YOU Yang et al. 2017). The optimization of the construction of the foundation pit dewatering is under the constraint that the dewatering depth of each control point has reached the designed depth, set the engineering dewatering
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