An Integrated Simulation-based Process Control and Operation Planning (IS-PCOP) System for Marine Oily Wastewater Management

Abstract

ABSTRACT. An ideal combination of process control and operation planning can reduce system cost and maximize economic and environmental benefits. This research proposed an integrated simulation-based process control and operation planning (IS-PCOP) system by using neural networks, genetic algorithm, multistage principle, and Monte Carlo simulation. It could well link process control and operation planning by simultaneously adopting different time-scales in computation. The hourly process control strategy forwarded the results to the operation planning module where long-term arrangements could be further evaluated. The use of ANN modeling also played a key role in predicting the nonlinear behavior of complex processes. In addition, Monte Carlo simulation yielded a better insight on uncertainties, which may arise from a number of different sources. A case study on marine wastewater management was carried out to demonstrate the efficacy of the proposed approach. Six different treatment standards (i.e., 5, 10, 15, 20, 25, and 30 μg L −1 ) were examined over a 20-day period and the 20 μg L −1 standard appeared to be the most economic option with a mean net cost of $18 per day. As compared to the traditional operation planning without process control, the integrated approach achieved more economically competitive results. By addressing the uncertainties and expressing the results in probability distributions, the decision makers would have more confidence in making decisions on both short-and long-term operations. It was concluded that the combination of process control and operation planning could help meet the economic objectives and ensure timely completion of the tasks.

Comprehensive Management and Coordination Mechanism of Marine Economy

“…Six different treatment criteria were examined within 20 days, and the 20 gauge standard seemed to be the most economical option with an average net cost of $18 per day. e accuracy of his method is very low [3].…”

Insights into the Toxicity of Triclosan to Green Microalga Chlorococcum sp. Using Synchrotron-Based Fourier Transform Infrared Spectromicroscopy: Biophysiological Analyses and Roles of Environmental Factors

“…A green microalgal cell is an organic integrity. Its biochemical components are closely related to physical properties, such as cell size and cell structure . The inherent correlations of biochemical components are closely associated with community performance, such as biomass growth.…”

“…Its biochemical components are closely related to physical properties, such as cell size and cell structure. 54 The inherent correlations of biochemical components are closely associated with community performance, such as biomass growth. SI Table S8 shows the linear regression coefficients between four molecular ratios and corresponding cell density/biovolume.…”

Sorption of Phenanthrene onto Diatomite under the Influences of Solution Chemistry: A Study of Linear Sorption based on Maximal Information Coefficient

“…Before testing, the samples were subsequently centrifuged at 5000 rpm (Multifuge X1R, Thermo Scientific, USA) for 30 min and 10000 rpm (Promo Legend Micro 21, Thermo Scientific, USA) for 10 min to separate diatomite from solution. An appropriate aliquot of supernatant was then carefully withdrawn with a volumetric pipette to further determine the residual amount of PHE (Wei et al, 2013;Jing et al, 2016).…”