Abrégé

A wastewater treatment system includes one or more aeration tanks for receiving wastewater, a controller for controlling the amount of air delivered to each of the one or more aeration tanks by a blower assembly, and a sensor assembly for periodically measuring values corresponding to the amount of dissolved oxygen in at least one of the one or more aeration tanks. When the sensor assembly measures values that are less than a low setpoint value, the controller causes the blower assembly to incrementally deliver more air until the sensor assembly measures values that are not less than the low setpoint value. When the sensor assembly measures values that exceed the low setpoint value, the controller causes the blower assembly to incrementally deliver less air until either the sensor assembly measures values that are not greater than the low setpoint value, or the blower assembly reaches a preselected low operating threshold. When the blower assembly is operating at the preselected low operating threshold, and the sensor assembly measures values that exceed a high setpoint value for a first designated period of time, the controller causes the blower assembly to shut down for a second designated period of time.

Classes IPC  ?

• C02F 3/02 - Procédés aérobies

Abrégé

A wastewater treatment system includes one or more aeration tanks for receiving wastewater, a controller for controlling the amount of air delivered to each of the one or more aeration tanks by a blower assembly, and a sensor assembly for periodically measuring values corresponding to the amount of dissolved oxygen in at least one of the one or more aeration tanks. When the sensor assembly measures values that are less than a low setpoint value, the controller causes the blower assembly to incrementally deliver more air until the sensor assembly measures values that are not less than the low setpoint value. When the sensor assembly measures values that exceed the low setpoint value, the controller causes the blower assembly to incrementally deliver less air until either the sensor assembly measures values that are not greater than the low setpoint value, or the blower assembly reaches a preselected low operating threshold. When the blower assembly is operating at the preselected low operating threshold, and the sensor assembly measures values that exceed a high setpoint value for a first designated period of time, the controller causes the blower assembly to shut down for a second designated period of time.

Classes IPC  ?

• C02F 1/74 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation au moyen de l'air
• C02F 3/30 - Procédés aérobies et anaérobies

Produits et services

Electric control panel for wastewater treatment equipment

Abrégé

A wastewater treatment system for removing settled material from a supply of wastewater includes an open-top clarifier tank for holding wastewater having a minimum upper surface level, a support member supported above the clarifier tank and a wastewater treatment module positioned to be located at least partially below the clarifier tank upper surface level so as to have a submerged portion within the wastewater contained within the clarifier tank. At least part of the submerged portion, which can include an effluent supply conduit, has an outer surface formed of an anti-biologic material. The anti-biologic material inhibits the growth of algae within the wastewater and on the anti-biologic surface. The anti-biologic material can be a copper material, and can be provided on a base material such as stainless steel.

Classes IPC  ?

• B01D 17/00 - Séparation de liquides, non prévue ailleurs, p. ex. par diffusion thermique
• B01D 17/025 - Séparation de liquides non miscibles par gravité, dans un bac de décantation

Produits et services

industrial machine presses, namely, belt filter presses and replacement parts thereof, namely press plates and frames, for use in removing water from biosolids in wastewater treatment

Abrégé

Solids removal assemblies (14) adapted for use in flow-through or batch-type sedimentation tanks (12) are provided which increase the efficiency of solids removal and eliminate physical scraping devices common with such sedimentation tanks. The preferred removal assemblies (14) include an elongated hood (34) disposed over a cooperating and complementally configured fill structure (26,28), which fills the majority of the internal volume of the hood (34). The hood (34) includes converging sidewalls (44, 46) having lower most inlet openings (54) and spaced, tubular outlets (56) adjacent the apex thereof. Outlet pipes (64) are operably coupled with each of the hood outlets (56) for suction withdrawal of waste water-solids suspensions which are then conveyed for downstream processing. The hood (34) and fill structure (26, 28) cooperatively define restricted flow paths for the waste water-solids suspensions, and assist in the creation of relatively high velocity movement of the suspensions to prevent bridging or clogging by collective solids adjacent the bottom of the tanks (12).

Classes IPC  ?

• B01D 21/24 - Mécanismes d'alimentation ou d'évacuation pour bacs de décantation

Produits et services

MODULAR CLARIFIER WITH INTEGRAL FLOCCULATOR FOR MUNICIPAL AND INDUSTRIAL WASTE TREATMENT

Produits et services

SEWAGE TREATMENT SYSTEMS COMPRISING SETTLING TUBES, AERATORS AND TANKS FOR AERATION IN SEDIMENTATION OF WASTEWATER

Produits et services

process controls being parts of wastewater treatment units used to remove biological nutrients from wastewater with the resultant recovery of alkalinity