Abstract: A fire detection system is provided. The system includes camera(s), focusing elements such as lenses or mirrors, and filters. The camera(s) collect images, some through at least a first filter of the filters, and some through at least a second filter of the filters. By comparing the images, fires may be detected. For instance, the filters may be selected so that one filter selects for light at a frequency associated with emissions from fires and so that another filter selects for light at another frequency. By comparing images collected through the different filters, a presence or absence of a fire may be determined.

Abstract: A system for removing sediment from water is disclosed. The exemplary embodiments described herein disclose a system comprising a filter chamber, having a deck positioned inside to divide it into an upper chamber and a lower chamber. The deck may have a plurality of holes to hold filtration elements and also may have a ridge or a skirt or both. The filtration elements may be filter cartridges with multiple elongated filter elements that extend down into the lower chamber.