The optimization of deing-flocculation-dewatering indicators of EPB shield waste muck belongs to a category of multi-objective optimization problem. As an empirical statistical and mathematical tool, the response surface methodology (RSM) is usually employed to explore the response models between several explanatory …
achieve pre-dewatering (upstream thermal lysis step) and thickening during the same process stage. Others use this dual functionality to run the ANDRITZ decanter centrifuge D in thickening mode during the period in which liquid sludge can be spread on the fields, and in dewatering mode when it is forbidden to spread liquid sludge on the fields.
Dewatering requirements of three open pits located in western Turkey and the impact of dewatering on groundwater resources were evaluated using a three-dimensional numerical groundwater flow …
sbm stone dimension dewatering optimi... Find file Blame History Permalink sbm · 34e52685 changjiangsx authored Nov 04, 2022. 34e52685 ...
This study focuses on optimizing the foundation pit dewatering scheme using the foundation pit dewatering theory and the principles of multi-objective optimization.
Mechanical dewatering processes are commonly used to reduce the sludge volume; aiming at the optimization of energetic or agricultural recovery of the sludge, storage and transport. Dewatering by screw centrifuge is one of the most important and widely used operation in sludge treatment.
2.2.scCO 2 treatment procedure. Based on previous researches, pressure, temperature and time were the major parameters that influenced the dewatering effect of SS by scCO 2 [17, 18].A series of single-factor bench-scale experiments and an orthogonal experiment were conducted at various combinations of pressure (10, 15, 20 MPa), …
Four parameters of amplitude, vibration frequency, vibrating direction angle and slope angle of screen surface are selected for single factor simulation test, and the …
A schematic representation of one-dimensional electrokinetic dewatering is illustrated in Fig. 2 where saturated clay is sandwiched between two electrodes and dewatered in a batch process. The top electrode is the anode, considered to be impenetrable to solids and liquid but allowing transfer of gases produced by the …
In this research new optimization parameters have been considered, such as production costs, dust emissions, water and energy consumption and Eco-Label …
Evaluating the reserves of commercial blocks in dimension stone quarries requires determining in situ block geometry. Furthermore, to extract blocks, the planes need to be cut, and the...
DOI: 10.1016/J.ENGGEO.2010.05.002 Corpus ID: 129761778; Numerical simulation of deep foundation pit dewatering and optimization of controlling land subsidence @article{Zhou2010NumericalSO, title={Numerical simulation of deep foundation pit dewatering and optimization of controlling land subsidence}, …
Dewatering optimization can significantly reduce the number of activated wells. Dewatering in the deepest excavation zone is the most efficient for the long-deep …
Four parameters of amplitude, vibration frequency, vibrating direction angle and slope angle of screen surface are selected for single factor simulation test, and the variation of dewatering and screening …
The comparison of pressure propagation on two-dimensional plane under overlooking the stress sensitivity and considering the stress sensitivity is shown in Figure 3. ... After that, the deviation of …
Abstract: Reducing the economic expenditure on electricity in the thickening–dewatering process is a viable approach to enhancing production efficiency and minimizing energy consumption. However, limited research has been conducted on co-optimization strategies for this process thus far. To address this gap and decrease the energy economic index …
The results show that the optimization of the dewatering implemented in this research can provide a useful model and framework for solving dewatering of mining site problems.
Application of the described approach is demonstrated on practical examples of quarrying natural stones, namely, sandstone, granite, rhyolite, etc. Block quarrying can be optimized by using the...
The approach consists of combining: (i) detailed geological and hydrogeological characterizations, (ii) numerical modelling for parameter estimation and …
The multi-objective dewatering optimization model solution and numerical simulation verification are carried out for the foundation pit dewatering project of the
mining operations. Mine dewatering is an essential part of resource extraction, as it lowers the water table around the mine or quarry. Effectively managed dewatering processes typically employ continuous water level monitoring. Mine dewatering is usually undertaken for several reasons:
3.2 Mathematical Calculations. Design of a screw press for dewatering of cattle dung slurry is carried out by the following data [5, 6].The diameter of the screw or flight diameter conveyor is the overall outer diameter of the screw which is seen in image five above represented by "D"; On the other hand, shaft diameter is the inner diameter of …
As shown in Fig. 1 (a), the experimental device consisted of a mechanical dewatering device and a constant V g control device. The mechanical dewatering device comprised the hydraulic system (pressure: 0–12 MPa), cathode plate, anode plate, upper cover plate, piston plate, water collection disc, filter press steel drum, polycarbonate PC …
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
The design and optimization of the dewatering scheme for deep foundation pits in a highly permeable heterogeneous layer are critical to protect water resources, control subsidence and mitigate ...
Two-dimensional model presented for continuous electrokinetic dewatering of phosphatic clay. ... shown to adequately represent experimental data collected for the operation of the lab-scale continuous electrokinetic dewatering prototype. An optimization strategy for an industrial-process was developed that yielded a minimum of the total cost ...
For deep foundation pit dewatering in the Yangtze River Delta, it is easy to make a dramatic decrease of the underground water level surrounding the dewatering area and cause land subsidence and geologic disasters. In this work, a three-dimensional finite element simulation method was applied in the forth subway of Dongjiadu tunnel repair …
Accordingly, the three-dimensional finite element numerical simulation is the basic theory of optimization design of engineering structures of dewatering in deep foundation pit in such areas. For deep foundation pit dewatering in the Yangtze River Delta, it is easy to make a dramatic decrease of the underground water level …
Optimization of dewatering process of concentrate pressure filtering by support vector regression. Huizhong Liu and Keshun You Author ... SVM method is an ML method based on the VC dimension theory of statistical learning theory and the principle of structural risk minimization 36. It is based on the complexity of the model of limited …
Optimization method and application research of dewatering design for complicated foundation pits. ... anti-inrushing, water-recharging, etc. Three-dimensional numerical simulation methods are used to optimize the design. By repeatedly adjusting the design items and simulating the working system, a safer, more reasonable and economical …
1. Introduction and review. Dimension stones are natural non-renewable resources that have to be quarried sustainably for environmental and economic reasons (Carvalho et al., 2018).Stone quarrying industry should satisfy the fundamental values of geoethics which include sustainability, environmental impact, economic development …
In the first part of the experiment, to investigate permeate flux during the FO process with an active surface area of approximately 14 cm 2, bench-scale tests were conducted (Fig. 1).Two tubing pumps (WT600−2J-YZ1515X, Longer, China) were applied to inject the feed and draw solutions into the channel simultaneously at the different …
The design and optimization of the dewatering scheme for deep foundation pits in a highly permeable heterogeneous layer are critical to protect water resources, control subsidence and mitigate environmental impacts. Numerical simulation is an important and sometimes the only tool in the design of dewatering schemes, especially …
Coupling mechanism and parameter optimization of sewage sludge dewatering jointly assisted by electric field and mechanical pressure Sci Total Environ. 2022 Apr 15; 817:152939. ... The pore structure was discussed in detail from the whole pore size distribution and fractal dimension. The fractal dimension could quantitatively …
