International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Timely detection and treatment of water pollution is of utmost importance for preventing serious environmental pollution and toxicity to living organisms. Traditional monitoring methods require time for sampling and analysis, and those that provide real-time monitoring are expensive and have limited application. The development of a low-cost sensor for real-time water monitoring will enable wider application and quality management of more water bodies. Guided by this, we constructed and tested a prototype of a biosensor based on a sediment microbial fuel cell. The sensor showed high efficiency and sensitivity to the most common heavy metals pollutants from industrial, agricultural and domestic wastewater. The sensor is designed for both portable and desktop applications, as well as for integration into the technological schemes of enterprises for continuous monitoring.

The article is focused to describing the current monitoring systems for cutting liquids used in turning, drilling, milling and grinding operations. Based on the findings, a proprietary monitoring system is designed. The monitoring system consists of the hardware and software parts. The hardware part is a data acquisition device that contains sensors of concentration, conductivity, acidity and temperature. The device is located in the machine tank reservoir with cutting fluids. The Software section – The application displays current real-time information and a historical overview of the measured quantities. The application allows setting of limit values for monitored quantities and, if overtaken, it can alert the operator. The proposed device represents a simple way to control selected fluid properties during their life cycle.