An aerator assembly for wastewater treatment includes a draft tube and an air supply assembly. The draft tube includes a sidewall and presents open top and bottom tube ends. The air supply assembly includes an air supply conduit and a diffuser body. The diffuser body has an inlet aperture and a bubble generator connected to the inlet. The inlet aperture is connected to the air supply conduit such that the bubble generator receives air from a source of air, to which the air supply conduit is connected. The bubble generator has a plurality of air openings for generating fine air bubbles. The diffuser body is sealingly engaged to the sidewall adjacent the bottom tube end so as restrict upward flow of wastewater through the draft tube past the diffuser body.
Modular electrical appliance for recycling greywater, connected to: a drainage pipe (S1) via which greywater enters into the greywater reservoir (1) thereof; a sanitary water supply (S) via which sanitary water enters into the auxiliary reservoir (7) thereof; and a flush pipe (D) which connects to the standard opening of the tank (WC) of a toilet.
The electrical appliance has a built-in three-way valve (4) which opens the outlet of said greywater reservoir (1) if it contains a sufficient amount for a full flush. If not, the outlet of said auxiliary reservoir (7) is opened.
A hydraulic pump (3) connected to the electrovalve (4) pumps the flush water, grey or sanitary, through the flush pipe (D).
A greywater recovery and reuse system is shown, including a body for collecting, reconditioning and discharging greywater. The body has an inlet connection to a source of greywater; a filter for filtering the greywater; a tank for receiving the filtered greywater; a disinfector for disinfecting the filtered greywater; a pump for discharging the reconditioned greywater from said tank to a toilet that needs flushing water; a discharge connection to a sanitary sewer system; a fresh water connection and a control system for controlling the operation of the greywater recovery and reuse system. The system includes a controller for operating the system and dealing with certain alarm and status conditions. Methods of operating the system are also comprehended.
E03B 1/04 - Methods or layout of installations for water supply for domestic or like local supply
E03D 5/00 - Special constructions of flushing devices
B01D 29/88 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor having feed or discharge devices
B01D 29/60 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor integrally combined with devices for controlling the filtration
B01D 29/00 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor
C02F 1/00 - Treatment of water, waste water, or sewage
C02F 1/76 - Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
C02F 103/00 - Nature of the water, waste water, sewage or sludge to be treated
B01D 29/64 - Regenerating the filter material in the filter by scrapers, brushes or the like, acting on the cake side of the filtering element
A greywater recovery and reuse system is shown, including a body for collecting, conditioning and discharging greywater. The body has an inlet connection to a source of greywater; a filter for filtering the greywater; a tank for receiving the filtered greywater; a disinfector for disinfecting the filtered greywater; a pump for discharging the conditioned greywater from said tank to a toilet that needs flushing water; a discharge connection to a sanitary sewer system; a fresh water connection and a control system for controlling the operation of the greywater recovery and reuse system. The system includes a controller for operating the system and dealing with certain alarm and status conditions. Methods of operating the system are also comprehended.
C02F 1/00 - Treatment of water, waste water, or sewage
C02F 1/76 - Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
B01D 36/04 - Combinations of filters with settling tanks
B01D 21/24 - Feed or discharge mechanisms for settling tanks
B01D 29/90 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor having feed or discharge devices for feeding
B01D 29/60 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor integrally combined with devices for controlling the filtration
C02F 9/00 - Multistage treatment of water, waste water or sewage
C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
C02F 103/00 - Nature of the water, waste water, sewage or sludge to be treated
5.
MODULAR ELECTRICAL APPLIANCE WHICH REUSES GREYWATER
The invention relates to a modular electrical appliance which reuses greywater, connected to: a drainage pipe (S1) via which greywater enters into the greywater storage vessel (1) thereof; a sanitary water supply (S) via which sanitary water enters into the auxiliary storage vessel (7) thereof; and a discharge pipeline (D) which connects to the standard opening of the tank (WC) of a toilet. The electrical appliance has a built-in three-way valve (4) which opens the outlet of said greywater storage vessel (1) if it contains a sufficient amount for a full discharge. If not, the outlet of said auxiliary storage vessel (7) is opened. A hydraulic pump (3) connected to the electrovalve (4) pumps the discharge water, greywater or sanitary water through the discharge pipeline (D).
Making a water permeable traffic bearing system includes preparing a compound water permeable base in contact with a native substrate, and installing a drainage system having a plurality of elongate drainage joints over the prepared water permeable base. Each of the drainage joints defines a plurality of vertical drainage conduits opening at upper and lower sides and in fluid communication with a storage volume defined by the water permeable base. Making the water permeable traffic bearing system further includes forming a segmental mat having a plurality of water impermeable surface pads abutting the plurality of drainage joints, at least in part by filling voids extending horizontally between the drainage joints with a curable paving material, and curing the paving material within the voids, in contact with each of the water permeable base and the drainage joints. Installing the drainage system further includes tuning precipitation handling of the traffic bearing system, at least in part by setting a spacing and a number of the drainage joints responsive to, a water throughput factor of the traffic bearing system and a structural factor of the segmental mat. The drainage joints may have upwardly and downwardly oriented legs joined via a bridge in an H-configuration.
Making a water permeable traffic bearing system includes preparing a compound water permeable base in contact with a native substrate, and installing a drainage system having a plurality of elongate drainage joints over the prepared water permeable base. Each of the drainage joints defines a plurality of vertical drainage conduits opening at upper and lower sides and in fluid communication with a storage volume defined by the water permeable base. Making the water permeable traffic bearing system further includes forming a segmental mat having a plurality of water impermeable surface pads abutting the plurality of drainage joints, at least in part by filling voids extending horizontally between the drainage joints with a curable paving material, and curing the paving material within the voids, in contact with each of the water permeable base and the drainage joints. Installing the drainage system further includes tuning precipitation handling of the traffic bearing system, at least in part by setting a spacing and a number of the drainage joints responsive to, a water throughput factor of the traffic bearing system and a structural factor of the segmental mat. The drainage joints may have upwardly and downwardly oriented legs joined via a bridge in an H-configuration.
A control system monitors salt level in a brine tank having a water inlet. The control system comprises a memory device storing an amount representing actual salt level in the brine tank. A sensor determines water level in the brine tank. A control valve is operatively connected between a water supply and the water inlet for controllably supplying water to the brine tank. A logic circuit is operatively connected to the memory device, the sensor and the control valve for determining salt level in the brine tank. The logic circuit periodically operates the control valve responsive to sensed water levels to fill the brine tank with water, updates the stored actual salt level in the memory device responsive to water supplied to the brine tank, and provides an indication when actual salt level in the brine tank falls below a select salt level.
patents
