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1. (WO2017147711) INTAKE FILTER FOR WATER COLLECTION SYSTEM WITH PRESSURE ACTIVATED BACKWASH VALVE
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Pub. No.: WO/2017/147711 International Application No.: PCT/CA2017/050283
Publication Date: 08.09.2017 International Filing Date: 02.03.2017
IPC:
C02F 1/00 (2006.01) ,B01D 29/66 (2006.01) ,B01D 35/02 (2006.01) ,E03B 1/04 (2006.01)
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
29
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/-B01D27/170;   Filtering elements therefor
62
Regenerating the filter material in the filter
66
by flushing, e.g. counter-current air-bumps
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
35
Filtering devices having features not specifically covered by groups B01D24/-B01D33/, or for applications not specifically covered by groups B01D24/-B01D33/230; Auxiliary devices for filtration; Filter housing constructions
02
Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
E FIXED CONSTRUCTIONS
03
WATER SUPPLY; SEWERAGE
B
INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
1
Methods or layout of installations for water supply
04
for domestic or like local supply
Applicants:
GREYTER WATER SYSTEMS INC. [CA/CA]; 722 The Queensway Toronto, Ontario MY8 1L3, CA
Inventors:
THOMPSON, Christopher Roy; CA
PEREIRA CALDEIRA, Michael Nelson; CA
Agent:
PUNDSACK, Scott R.; CA
Priority Data:
62/302,98803.03.2016US
62/305,62509.03.2016US
Title (EN) INTAKE FILTER FOR WATER COLLECTION SYSTEM WITH PRESSURE ACTIVATED BACKWASH VALVE
(FR) FILTRE D'ADMISSION POUR SYSTÈME DE COLLECTE DES EAUX À VANNE DE LAVAGE À CONTRE-COURANT ACTIVÉE PAR LA PRESSION
Abstract:
(EN) - 14 - ABSTRACT This specification describes an intake filter for use, for example, in a system that collects greywater from baths or showers for re-use in toilet flushing. The intake filter provides essentially dead-end filtration. An influent by- pass may be provided, but the filter is cleaned as required to reduce use of the by-pass. Cleaning is performed when permeability of the filter declines. An upstream sensor may be used to detect the permeability of the filter. In one cleaning method, flowing water, optionally with air, is used to backwash the filter. The impulse of the flowing water also moves one or more valves to direct backwash water to a sanitary drain. For example, pumped effluent may impinge against a first flap to close an effluent drain, the first flap being mechanically linked to open a flap covering the sanitary drain.
(FR) La présente invention concerne un filtre d'admission destiné à être utilisé, par exemple, dans un système qui collecte les eaux grises provenant des bains ou des douches en vue d'une réutilisation dans la chasse d'eau des toilettes. Le filtre d'admission permet une filtration essentiellement frontale. Une dérivation d'influent peut être prévue, mais le filtre est nettoyé si nécessaire pour réduire l'utilisation de la dérivation. Le nettoyage est effectué lorsque la perméabilité du filtre diminue. Un capteur en amont peut être utilisé pour détecter la perméabilité du filtre. Selon un procédé de nettoyage, l'eau en écoulement, éventuellement avec de l'air, est utilisée pour le lavage à contre-courant du filtre. L'impulsion de l'eau en écoulement déplace également une ou plusieurs vannes pour diriger l'eau de lavage à contre-courant vers un drain sanitaire. Par exemple, un effluent pompé peut heurter un premier volet afin de fermer un drain d'effluent, le premier volet étant relié mécaniquement pour ouvrir un volet recouvrant le drain sanitaire.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)