1 research outputs found
Optimal Synthesis of Water Networks for Addressing High-Concentration Wastewater in Coal-Based Chemical Plants
This
paper outlines the development of an optimization-based method
for synthesizing a water network, which incorporates various treatment
technologies to address the high-concentration wastewater in coal-based
chemical plants. One important feature of the proposed approach is
that it associates a multistep wastewater treatment design within
a source–regeneration–sink superstructure. This design
can enforce certain design and structural specifications to tighten
the model formulation and enhance solution convergence. A mixed integer
nonlinear programming problem is formulated based on the proposed
superstructure, which involves unit-specific shortcut models instead
of the fixed impurities removal model to describe it accurately. The
proposed method for water network synthesis is demonstrated using
two case studies, which determine the effect of streams composition
and wastewater treatment technologies on the total network cost, freshwater
consumption, and water network design. The results highlight the ability
of the proposed model for the developed water network synthesis by
computing quickly and realizing the goals of cost savings and discharge
reduction