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1. WO2020110139 - "MULTI-COLUMN SAND FILTER AND A METHOD THEREOF"

Publication Number WO/2020/110139
Publication Date 04.06.2020
International Application No. PCT/IN2019/050806
International Filing Date 01.11.2019
IPC
B01D 24/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
24Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
02with the filter bed stationary during the filtration
10the filtering material being held in a closed container
12Downward filtration, the filtering material being supported by pervious surfaces
C02F 1/28 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
28by sorption
C02F 9/00 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
9Multistep treatment of water, waste water or sewage
CPC
B01D 24/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
24Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
02with the filter bed stationary during the filtration
10the filtering material being held in a closed container
12Downward filtration, the filtering material being supported by pervious surfaces
B01D 36/001
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
36Filter circuits or combinations of filters with other separating devices
001Filters in combination with devices for the removal of gas, air purge systems
C02F 1/004
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
001Processes for the treatment of water whereby the filtration technique is of importance
004using large scale industrial sized filters
C02F 2301/043
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2301General aspects of water treatment
04Flow arrangements
043Treatment of partial or bypass streams
C02F 2301/08
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2301General aspects of water treatment
08Multistage treatments, e.g. repetition of the same process step under different conditions
Applicants
  • VASHISHT, Ajay Kumar [IN]/[IN]
  • RANJAN, Prem [IN]/[IN]
Inventors
  • VASHISHT, Ajay Kumar
  • RANJAN, Prem
Agents
  • AILAVADI, Rajan
  • PRIYA, Tanu
Priority Data
20183104524130.11.2018IN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) "MULTI-COLUMN SAND FILTER AND A METHOD THEREOF"
(FR) "FILTRE À SABLE À COLONNES MULTIPLES ET SON PROCÉDÉ"
Abstract
(EN)
The present invention provides a novel sand filtration system for treatment of wastewater and method thereof. The sand filter includes multi-columns thus allowing procurement of different quality water at the same time. The desired quality water from sand filter can be obtained at any preliminary stage of operation. The multi-column filtration set up has the ability to reduce the turbidity of wastewater below the minimum standard prescribed by WHO i.e. one NTU (that is essential for groundwater recharging). The sand filtration unit serves as an efficient and viable means of treating wastewater. Additionally, the multi-column sand filter can be cleaned without disrupting its operation in a column-wise manner.
(FR)
La présente invention concerne un nouveau système de filtration de sable pour le traitement des eaux usées et un procédé associé. Le filtre à sable comprend des colonnes multiples permettant ainsi l'approvisionnement en eau de qualité différente en même temps. L'eau de qualité souhaitée provenant du filtre à sable peut être obtenue à n'importe quel stade préliminaire de fonctionnement. L'ensemble de filtration à colonnes multiples a la capacité de réduire la turbidité des eaux usées au-dessous de la norme minimale prescrite parl'OMS c'est-à-dire une NTU (qui est essentielle pour la recharge de l'eau souterraine). L'unité de filtration de sable sert de moyen efficace et viable de traitement des eaux usées. De plus, le filtre à sable à colonnes multiples peut être nettoyé sans perturber son fonctionnement en colonne.
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