Abstract:
A biomass carrier including a multiplicity of generally elongate plastic biomass attachment strips joined to each other at at least one location therealong, the multiplicity of generally elongate plastic biomass attachment strips being mutually arranged to define a generally deformable biomass carrier including generally outer disposed biomass attachment strips and generally inner disposed biomass attachment strips. Apparatus and methods for manufacture of the biomass carrier as well as fluid treatment systems and methods using the biomass carrier are also disclosed.
Abstract:
A compressible biomass carrier for use in fluid treatment systems is disclosed. The biomass carrier includes an extruded circumferential mesh-like structure and elongated elements positioned in a space confined by the circumferential mesh-like structure and at least some of the elongated elements are joined to an inner portion of the mesh-like structure.
Abstract:
A method for removal of foam from at least one foam accumulation region in a wastewater treatment facility, the method including causing the foam to flow from the at least one foam accumulation region into at least one foam collector and removing the foam from the at least one foam collector.
Abstract:
A method and apparatus for manufacturing a combined polymeric structure are disclosed. The apparatus includes an extruder body, a die configured to receive flowing polymeric material from the extruder body and a motion unit. The die includes a hollow inner die, a protecting sleeve located within the inner die and an outer die located at an exit end of the hollow inner die. The motion unit is configured to cause bidirectional translational motion of the hollow inner die relative to the outer die.
Abstract:
A method and apparatus for retrofitting existing waste water treatment facilities having at least one existing basin including installing generally vertical partitions at spaced locations in the existing basin in order to divide the existing basin into a plurality of treatment stage regions, installing at least one air lift in each of the plurality of treatment stage regions, loading each treatment stage regions with a quantity of floatable porous particles, supplying waste water to at least one of the plurality of treatment stage regions and allowing the waste water, but generally not the particles, to flow from the plurality of treatment stage regions to at least another of the plurality of treatment stage regions and operating the air lift in each of the plurality of treatment stage regions to provide aerobic waste water flow therein in operative engagement with the floatable porous particles. A biomass support including a plastic biomass support element having a maximum dimension which does not exceed 50 mm and having a specific gravity of between approximately 0.70 - 0.91, a method of manufacture of a biomass support and a waste water treatment system employing the biomass support are also disclosed.
Abstract:
A method and apparatus for manufacturing a combined polymeric structure are disclosed. The apparatus includes an extruder body (110), a die (120) configured to receive flowing polymeric material from the extruder body (110) and a motion unit. The die includes a hollow inner die (122), a protecting sleeve (124) located within the inner die (122) and an outer die (125) located at an exit (128) end of the hollow inner die (122). The motion unit is configured to cause bidirectional translational motion of the hollow inner die (122) relative to the outer die (125).
Abstract:
The invention relates to an anaerobic/aerobic liquid purification system comprising a reactor, wherein the reactor comprising: an anaerobic liquid purification subsystem with an inlet for receiving liquid to be treated, and an outlet providing an anaerobic-treated liquid output; and - an aerobic liquid purification subsystem, integrated with the anaerobic liquid purification subsystem, with an inlet for receiving the anaerobic-treated liquid output and an outlet for providing an anaerobic- and aerobic-treated liquid output, wherein the inlet of the aerobic subsystem is connected with connecting means to the outlet of the anaerobic subsystem.
Abstract:
Apparatus for integrated biological wastewater treatment and clarification including a tank having a wastewater inlet for receiving wastewater to be treated and having a treated, clarified wastewater outlet for providing treated, clarified wastewater for use, the tank having an upper turbulence region, a lower solids settling region below the upper turbulence region and a sludge collection region below the lower solids settling region, a multiplicity of biomass carriers disposed in the upper turbulence region, a gas diffuser assembly arranged generally between the upper turbulence region and the lower solids settling region for providing gas bubbles which move upwardly through the wastewater and the biomass carriers in the upper turbulence region, providing turbulence and oxygen and a sludge removal conduit communicating with the sludge collection region for removal of sludge therefrom.
Abstract:
A method for treatment of nitrified wastewater, the method including supplying wastewater to be treated to a tank having a layer of biomass supporting media near or at the top thereof, retaining biomass on and below the biomass supporting media for a sufficient time such that the biomass hydrolyses and supplies organic carbon to the wastewater in the tank; denitrifying and simultaneously clarifying the wastewater by providing an upward flow of the wastewater in the tank through the layer of biomass supporting media and discharging excess sludge from the bottom of the tank at a rate which is selected to maintain nitrate and ammonia concentrations below selected thresholds.