Abstract: A method of treating aqueous, preferably concentrated, waste streams with a unique combination of steps in a way that is easily scalable and able to be used with batch or continuous flows. The method comprises at least the following steps: Adding at least one precipitating agent to the waste water to produce precipitated solids; and removing the precipitated solids from the waste water using a forward flushable membrane to remove the precipitate solids.

Abstract: A quick release device for a surfboard safety leash, for facilitating the rapid release of an ankle strap of the surfboard safety leash from the user's leg or ankle. The device comprises an indicator mass for determining the position and location of the fastening end of the ankle strap of the surfboard safety leash. The indicator mass is secured to the ankle strap of the surfboard safety leash allowing for quick and positive determination of the position and location of the end of the ankle strap of the surfboard safety leash. The indicator mass may be configured in any geometric configurations such as spherical, square, rectangular, triangular, or other shapes as desired. An attachment cord for attaching and positioning the indicator mass onto the surfboard safety leash is secured to the ankle strap or ankle cuff of the surfboard safety leash so that when a pulling force is applied to the indicator mass or attachment cord, the ankle strap of the surfboard safety leash releases from the user's ankle or leg.