Numerical simulation of deep foundation pit dewatering and optimization

The finite difference method (FDM) (Wang et al., 2009) is adopted. According to the influence radius of many pit dewatering projects in Shanghai, the numerical simulation range extends 1000 m along each side of foundation pit boundary, so the whole calculation area is 2347 m × 2020 m. As the thicknessDewatering scheme …

Study on screening performance and parameter optimization …

In improving dewatering performance, Dong et al. 1,2 developed a vibrating-dewatering screen with a unique structure that uses side plate beam excitation. Shi 3 studied the high-frequency coal slime vibrating-dewatering screen, and analyzed the parameters selection method and structural design characteristics of the machine. In …

Research on Multi-Objective Optimization Model of …

The multi-objective optimization evaluation system based on AHP is constructed from the three aspects of dewatering cost, the impact of settlement on …

Optimization of electro-dewatering performance of oily …

As shown in Fig. 2, The experimental setup and design utilized consisted of several components: a DC power unit (SS-6010KD, China), an air compressor (OTS550, China), a dewatering unit, and a detection unit.The dewatering unit was comprised of a nylon barrel reactor with an inner diameter of 10 cm, equipped with a ruthenium-iridium …

Confined aquifer dewatering optimization with a modified …

Confined aquifer dewatering optimization with a modified simulation–optimization method capable of determining the optimal well screen length …

Coupling mechanism and parameter optimization of …

@article{Rao2022CouplingMA, title={Coupling mechanism and parameter optimization of sewage sludge dewatering jointly assisted by electric field and mechanical pressure.}, author={Binqi Rao and Jiang Su and Jing Xu and Shengjun Xu and Hongru Pang and Yan Zhang and Peng Xu and Boran Wu and Jiadi Lian and Long Deng}, …

Decanter Centrifuges and Dewatering Technology Selection: …

1.4 Decanter Centrifuge Scale-Up Estimates. To estimate the performance of decanter centrifuges, various centrifuge vendors offer laboratory spin testing in benchtop centrifuges to imitate the forces experienced in a full-scale decanter centrifuge [].Such laboratory tests are often used in engineering study phases to support the comparison of …

Optimization of a deep foundation pit dewatering scheme in …

Abstract. The hydrodynamic changes and ground settlement induced by engineering dewatering have received much attention, and leakage between different …

W09 Dewatering Optimization

Title: W09 Dewatering Optimization. Description: This workshop will focus on practical solutions to increase dewatering performance, including drier cake solids, better solids capture, reduced polymer consumption, and reduced operations and maintenance costs for untreated sludge, aerobically digested biosolids, and anaerobically digested ...

Dewatering 101: An Introduction to Construction …

By David BardsleyApril 12, 2022. Construction dewatering is the process of removing groundwater from a construction site to provide a safe and stable subgrade for excavation. Groundwater is removed from the site using …

Optimization of confined aquifer dewatering for long-deep …

Dewatering optimization can significantly reduce the number of activated wells. Dewatering in the deepest excavation zone is the most efficient for the long-deep excavation with gradually varying excavation depths.

Fact Sheet: Centrifuge Thickening and Dewatering | US EPA

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 operation, and reduces …

A two‐step coordinated optimization model for a dewatering …

The objective of the optimization is to minimize the EEI in the dewatering process, and the constraints are the ladder electricity price, operation safety, and production index. The genetic algorithm (GA) and gravitational search algorithm‐genetic algorithm (GSA‐GA) are used to solve the two‐step coordinated optimization model, and the ...

Groundwater dewatering optimization in the Shengli no. 1 …

For the groundwater dewatering optimization problems, one objective is to minimize the total pumping rates of the dewatering wells. Another objective is to …

Numerical evaluation of a 70-m deep hydropower station

Under the normal dewatering conditions, the minimum safety factor of A profile was 1.268 as calculated by the Swedish strip method. The B section of the slope adopted the ordinary and Janbu methods to calculate the minimum safety factor, all of which were 1.272. ... (1989) Dewatering optimization using a groundwater flow model …

Research on Multi-Objective Optimization Model of …

The multi-objective optimization evaluation system based on AHP is constructed from the three aspects of dewatering cost, the impact of settlement on the …

Optimization of electro-dewatering performance of oily …

Electro-dewatering technology (EDW) ... Process Safety and Environmental Protection, Volume 164, 2022, pp. 846-856. Shanshan Wei, …, Ting Xu. Machine learning-based life cycle optimization for the carbon dioxide methanation process: Achieving environmental and productivity efficiency. Journal of Cleaner Production, …

Optimization of a deep foundation pit dewatering scheme …

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 ...

Oily cold rolling mill sludge conditioned by quicklime to …

Dewatering is critical to oily cold rolling mill (CRM) sludge treatment. Therefore, finding an efficient, energy-saving, and applicable dewatering technology for oily CRM sludge is still urgent. This study investigated the performance of quicklime as a conditioning agent for oily CRM sludge conditioning and dewatering. The interactive …

Optimization of Fe(II)/SPC Sludge Conditioning and Dewatering …

Sludge conditioning is a crucial step in sludge dewatering aimed at minimizing excessive sludge production. The Fenton process, which harnesses oxidative radicals to dismantle extracellular polymeric substances (EPS) and microorganisms, has been unequivocally proven to enhance sludge dewaterability. However, the widespread …

Optimization of dewatering schemes for a deep foundation pit …

To guarantee the safety of the pit excavation and ensure the stability of the Yangtze River levee, three dewatering requirements were proposed. ... Numerical simulation of deep foundation pit dewatering and optimization of controlling land subsidence. Engineering Geology, 114 (3/4) (2010), pp. 251-252. View in Scopus Google …

A simulation-optimization approach for optimal design of dewatering …

The results indicate that the dewatering optimization procedure developed in this paper can serve as a useful template and framework for solving mining related water problems. View Show abstract

Optimization of operating conditions in the biological …

Optimization of pH in the biological enzymes for WAS dewatering The increases in sludge supernatant fractions under different pH conditions of bio-enzyme conditioning of WAS are shown in Fig. 1 (a). The protein, polysaccharide, and SCOD contents of the raw sludge supernatant used in the experiment were 41.56 mg/g TSS, …

Numerical simulation of deep foundation pit dewatering and optimization

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 ...

Optimization of dewatering schemes for a deep foundation …

A CCEPTED MANUSCRIPT. from the main road to the groun d, ranging from -9.66 m to -5.76 m for. ramp A, -11.46 m to -1.95 m for ramp B, and -9.92 m to -2.82 m for ramp. C (Table 1). The elevation of ...

Research on Multi-Objective Optimization Model of …

This study focuses on optimizing the foundation pit dewatering scheme using the foundation pit dewatering theory and the principles of multi-objective... This website uses cookies to ensure you get the best experience. ... Research on Multi-Objective Optimization Model of Foundation Pit Dewatering Based on NSGA-II Algorithm …

A two‐step coordinated optimization model for a dewatering …

The objective of the optimization is to minimize the EEI in the dewatering process, and the constraints are the ladder electricity price, operation safety, and production index. The genetic algorithm (GA) and gravitational search algorithm-genetic algorithm (GSA-GA) are used to solve the two-step coordinated optimization model, …