Abstract: An aerator assembly for use in the aeration vessel of a wastewater treatment system comprising a rigid tubular member having an upper end and a lower end, and a diffuser assembly, the diffuser assembly comprising a flexible connector and a diffuser head, the flexible connector connecting the diffuser head to the lower end of the rigid tubular member and providing a fluid flow path between the tubular member and the diffuser head, the upper end of the rigid tubular member being adapted to be connected to a source of an oxygen-containing gas such as air.

Abstract: A system for the chemical treatment of wastewater may be discharged in a night spray system, an on demand system or a dosing system. Tank 12 receives wastewater, and a discharge pump 16 pumps wastewater from the tank in the night spray system. A sensor 24 deactivates the discharge pump when the wastewater level reaches a predetermined low level, and in some applications activates the discharge pump when the wastewater level reaches a predetermined high level. A liquid disinfectant pump 38 pumps liquid disinfectant to the tank, and a controller 30 activates a liquid disinfectant pump for a selected time interval as a function of the discharge system.

Abstract: A vessel assembly for use in a wastewater treatment system having a first vessel, a second vessel, a first gusset assembly attached to and connecting the first and second vessels and a second gusset assembly attached to and connecting the vessels, at least one of the gusset assemblies provides an upwardly facing surface or pocket for holding fill materials such as dirt or gravel to counter buoyancy acting on the vessel assembly.

Abstract: A system for introducing a liquid disinfectant into treated wastewater comprising a source of liquid disinfectant, a sensor to detect flow of treated wastewater from a wastewater treatment system, a pump to introduce the liquid disinfectant into the treated wastewater and a controller operatively connected to the sensor to activate the pump in response to increased flow of treated wastewater above a sensed, predetermined flow rate.

Abstract: An aeration vessel for use in a aerobic wastewater treatment system, the aeration vessel comprised of a bottom section having a bottom wall and an inverted frustoconical side wall, a top section having a frustoconical side wall and a partition having an inverted frustoconical side wall, the top and bottom sections being provided with mating flanges which can be sealingly engaged, the partition being disposed in the aeration vessel formed by the first and second section.

Abstract: The present invention provides an electronic regulatory compliance system and method that permits a regulatory agency to efficiently and accurately monitor thousands of environmental equipment installations, such as homeowner wastewater treatment plants, for compliance with regulatory requirements. The environmental equipment installations may be installed at different locations, operating on different inspection schedules, with different service companies, different owners, of different types, and be of different processing capacity. A personnel detector is preferably utilized to verify the actual physical presence of service personnel. In accord with the invention, each environmental equipment system is connected to a network that logs and time-stamps events that occur at each of the plurality of environmental equipment systems related to compliance with environmental regulations.

Abstract: A defined current and aeration system for the aeration chamber of an aerobic wastewater treatment plant is disclosed. It includes the release of oxygenation gas or air into the aeration chamber through a diffuser or the like at a position such that the air injected into the tank provides the necessary amount of oxygen for aerobic bacterial digestion of the waste while creating a current or circulation pattern in the chamber that forces every portion of the fluid within the aeration chamber into circulation thus preventing the accumulation of solids as sludge in the wastewater treatment plant.