Sustainable Industrial Internet-of-Things (IIoT) or Green IIoT becomes an important research area in IIoT given the large increase in energy prices in the post-COVID era and the continual introduction of carbon emission regulations to industry sectors by the government. The greening of IIoT focuses on developing energy-efficient IIoT to create a sustainable environment. Despite the fact that the dominant solution to sustainable IIoT has yet to emerge, molecular communication is one of the main players to realize extremely low energy consumption for low-speed communication channels. In this paper, a two-stage molecular communication system that reused a surveillance-camera-based receiver for an IIoT scenario is envisioned, in order to achieve a stable communication channel with low Inter-Symbol Interference (ISI) while maintaining low energy consumption. A hardware-in-loop simulation is performed for feasibility check based on bit-error-rate (BER) analysis. Utilizing the correction coefficients obtained from the experiment of concentration model calibration, simulation is further conducted. Simulation results show that the proposed system is able to achieve BER of 0.04 and below in a distance of 20 m with proper configurations.