An apparatus and method for automated decantation of multi-phase fluid is disclosed. The apparatus for two phase fluid comprises a fluid line assembly, a floating marker, a sensor, an actuator assembly and a control board. The fluid line is attached to a reservoir containing the multi-phase fluid, comprising an inlet and two outlets. A three-way valve is disposed between the inlet and the two outlets. The floating marker is disposed within a cylindrical frame mounted within the reservoir. The selective density of the float marker is selected between the density values of two fluids in the multi-phase fluid. The float-marker floats between the two fluid phases due to the density of the float marker and fluid. The actuator assembly, configured to operate inlets and outlets of the fluid line. The number of outlets, sensor, and floating marker increases with the number of phases of fluid.

A method of treating water in a water treatment system after a replacement of an ion exchange bed includes introducing water to be treated into the ion exchange bed of the water treatment system to produce treated water, calculating a current exchange daily average flow rate of water through the water treatment system, calculating a cumulative daily average flow rate of water through the water treatment system, and determining an estimated number of days remaining to exhaustion of the ion exchange bed based on the current exchange daily average flow rate and the cumulative daily average flow rate.

A method/system for sequestering carbon dioxide from cement and lime production facilities wherein carbon dioxide from flue gases originating from cement or lime production facilities is recovered and transported to a building materials production facility where it is sequestered.

A method/system for sequestering carbon dioxide from cement and lime production facilities wherein carbon dioxide from flue gases originating from cement or lime production facilities is recovered and transported to a building materials production facility where it is sequestered.

A method of treating water in a water treatment system after a replacement of an ion exchange bed includes introducing water to be treated into the ion exchange bed of the water treatment system to produce treated water, calculating a current exchange daily average flow rate of water through the water treatment system, calculating a cumulative daily average flow rate of water through the water treatment system, and determining an estimated number of days remaining to exhaustion of the ion exchange bed based on the current exchange daily average flow rate and the cumulative daily average flow rate.

An environmental waste water filtering system, including a bucket, the inside of which tapers into a funnel portion that leads to a strainer. The funnel has an exit tube that extends 3 inches below the bucket wall and may be inserted into a drain such as a toilet drain pipe. The inside of the bucket and funnel portion forms a fluid debris chamber. When fluid containing particulate matter is poured into the fluid debris chamber, the particulate matter is removed from the fluid portion as the fluid passes through the strainer and then into the toilet drain pipe. Once all fluid drains from the fluid debris chamber, the captured debris may be poured into a trash bag and disposed of. Optionally, a disposable straining filter bag may be positioned in the fluid debris chamber so that even finer particulate matter is removed from the fluid for disposal with the bag.

The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.

The present invention relates to methods for biological wastewater treatment for Se control in Se-laden wastewater. The Se contaminants in the wastewater include the Se oxyanions selenate (SeO.sub.4.sup.2-) and selenite (HSeO.sub.3.sup.?), which are biochemically reduced and transformed to elemental selenium (Se.sup.0) by microorganisms through anaerobic biological reduction. The resulting Se.sup.0 is entrained in the biomass, which is further processed to enable the efficient recovery of concentrated Se.sup.0.

A method of treating water in a water treatment system after a replacement of an ion exchange bed includes introducing water to be treated into the ion exchange bed of the water treatment system to produce treated water, calculating a current exchange daily average flow rate of water through the water treatment system, calculating a cumulative daily average flow rate of water through the water treatment system, and determining an estimated number of days remaining to exhaustion of the ion exchange bed based on the current exchange daily average flow rate and the cumulative daily average flow rate.

The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.