Process and assembly to condition process water for the creation of underground storage caverns by solution mining

摘要

In a process to condition process water for the creation of underground storage caverns by solution mining, the incoming water is pre-filtered, de-oxygenated and pumped into the cavern into which brine is released. After pumping brine from the cavern, the raw brine is de-oxygenated and the pH adjusted to a target value. A complexing agent is introduced and the brine discharged to a settling container Brine discharging from the settling container is conditioned with a crystallisation inhibitor and passed through a micro-filter. The treated sole is then surrendered to a holding container from which it is finally discharged to suitable porous geological formations. Also claimed is a commensurate assembly in which the dissolved oxygen content, pH value, turbidity, redox-potential, temperature and density of the raw and pure brine are continually measured and monitored.