Abstract: A lagoon batch wastewater treatment system for a wastewater treatment lagoon wherein a containment tank expands and contracts during a sewage treatment process reducing erosion of the berm or bank of the lagoon.

Abstract: An erosion barrier wastewater treatment system and in particular a liner for a wastewater treatment lagoon that provides for trapped gas below the barrier to be released through vents within the barrier and in particular to a liner for a wastewater treatment lagoon that may have portions replaced without operation of the wastewater lagoon facility being interrupted.

Abstract: An erosion barrier wastewater treatment system and in particular a liner for a wastewater treatment lagoon wherein the lagoon may be any earthen basin for containing a body of water, for instance wastewater, and the liner is utilized mainly for reducing the erosion of the lagoon walls due to water turbulence, the liner being formed from panels of material that can be constructed and implemented inexpensively and without interruption of facility operation for installation of the device.

Abstract: A lagoon batch wastewater treatment system for a wastewater treatment lagoon wherein a containment tank expands and contracts during a sewage treatment process reducing erosion of the berm or bank of the lagoon.

Abstract: A buoyant water heating device that may be used in a natural setting, such as a pond or lake, or in a man-made water-containing apparatus, such as a pool or water-treatment lagoon. The device comprises a water-filled, generally cylindrical anchor member coupled to a hollow, generally annular base member, and may he used alone or in combination with multiple other devices to create a free-floating blanket on the surface of the water. The device absorbs solar energy to heat water external to the device, and also provides a layer of thermal insulation between the water and the air above the device.

Abstract: A barrier which can be easily deployed in a lagoon, pool or other containment structure to partition and provide isolation between adjacent bodies of water or other liquid. As a result, different treatment operations can occur in the adjacent bodies of water which are separated by the novel curtain barrier. The bodies of water can also be easily rearranged by use of the invention. The barrier includes first and second curtains of flexible water impermeable material which are disposed in a generally vertical disposition and the bottoms of which are joined to a bottom web which preferably is integrally formed with the first and second curtains. The bottom web is adapted to be disposed on the lagoon bottom and ballast material is contained between the first and second curtains on the bottom web to seal the barrier to the lagoon bottom and to prevent movement of the barrier in response to wind, tide, current or other forces.