Abstract: A method for removing contaminant material from a soil site in which one or more porous source electrodes and one or more porous sink electrodes are positioned within the soil site and voltage gradients are established among the electrodes. A purging liquid is supplied to the source electrodes so as to flow therefrom into the soil site, the voltage gradients causing the purging liquid to move by electroosmosis through the soil site toward the sink electrodes. The purging liquid displaces the contaminant material so as to cause the contaminant material to be moved from the soil site into the sink electrodes from which they can be removed, as by a pumping or siphoning action.

Abstract: A method of and apparatus for continuously removing dispersed particles which can be flocculated from a liquid containing said particles, such as wastewaters, wherein flocculation of said particles is caused to take place in a turbulent pipe flow by the injection and rapid mixing of a coagulant and/or coagulant aid in said turbulent pipe flow which simultaneously flocculates said particles and transports the mixture of flocculated particles and liquid into a settling tank for clarification. A controlled quantity of dispersed floc from said settling tank is continuously recirculated into said pipe flow at a station where mixing of the coagulant and/or coagulant aid is achieved, so as to reduce the length of said pipe to a desired size and the flow rate of said injected coagulant and/or coagulant aid.

Abstract: A technique for recovering natural gas from geopressured brines contained in a first aquifer in which the brine is conveyed from the high pressure geopressured aquifer to an underground chamber at lower pressure at a location remote from the geopressured aquifer, the lower pressure within the chamber causing the gas to be released from the brine after entry into the chamber. The released gas is conveyed from the chamber to a suitable gas outlet for use while the brine within the chamber by virtue of its pressure is conveyed to a second upper level discharge aquifer at a location remote from the chamber.

Abstract: An improved lamella separator which reduces the contamination of the clear liquid output thereof in comparison with conventional lamella separators of the prior art. In a preferred embodiment thereof, the thickness of the feed liquid layer containing solid material is monitored at one or more regions in each of the channels of the separator so that when the thickness thereof approaches or exceeds about one half the channel depth in one or more channels, a control system responsive thereto maintains such thickness in such one or more channels at less than one half the channel depth.