WO2015125063A1 - Procédé de purification d'eau et appareil correspondant - Google Patents

Procédé de purification d'eau et appareil correspondant Download PDF

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Publication number
WO2015125063A1
WO2015125063A1 PCT/IB2015/051149 IB2015051149W WO2015125063A1 WO 2015125063 A1 WO2015125063 A1 WO 2015125063A1 IB 2015051149 W IB2015051149 W IB 2015051149W WO 2015125063 A1 WO2015125063 A1 WO 2015125063A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
tank
filter media
unit
treatment chemical
Prior art date
Application number
PCT/IB2015/051149
Other languages
English (en)
Inventor
Mohd Arshil MOIDEEN
Mohd Adlan ADNAN
Syamsul Ariff SUPAAT
Kok Ping VOON
Original Assignee
Puncak Niaga Holdings Berhad
Ministry Of Defence Malaysia
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Puncak Niaga Holdings Berhad, Ministry Of Defence Malaysia filed Critical Puncak Niaga Holdings Berhad
Publication of WO2015125063A1 publication Critical patent/WO2015125063A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the present invention relates to a method of purification of water and an apparatus therefore. More particularly, the invention relates to a method of purification of water utilizing a bio-sand filter and to an apparatus for the method, which apparatus is easily assembled, portable and is capable of being safely air-dropped.
  • Availability of safe drinking water is essential for healthy living of human beings.
  • Water purification is essential as un-purified water may contain bacteria, viruses, toxins, dissolved heavy metals and other forms of dissolved impurities which when consumed may be adverse to the health of the population and may also propagate water-borne diseases.
  • the present invention relates to a method for purification of water, where raw water in a first tank is purified by adding and mixing with a pre-treatment chemical. Flocculants in the pre-treated water are allowed to settle and introduced to a pre-strainer unit; the pre-strained water is transferred into a second tank containing a bio-sand filter media for filtration; the filtered water is subjected to a UV disinfectant unit and the water now is discharged for consumption.
  • the pre-treated water is distributed evenly over a pre- strainer unit where the pre-strainer includes a filter media with a pore size between 25 ⁇ to 200 ⁇ , preferably with a pore size of 50 ⁇ . Additionally, the filter media used is of polyethylene cloth.
  • the pre-treatment chemical and raw water is mixed for at least 15 minutes.
  • the pre-treatment chemical used is preferably of alum or aluminum sulphate.
  • the pre-strained water is transferred into a second tank by gravitational drop from the pre-strainer unit, the pre-strained water is subjected to a bio-sand filter media.
  • the filtered water from the second tank now is introduced into the UV disinfectant unit from a perforated PVC pipe assembly positioned at the bottom of the bio-sand filter.
  • a second aspect of the present invention relates to an apparatus for the method of purification of water comprising of:
  • pre-strainer unit to receive pre-treated water from a first tank
  • a mixing means including a stirrer and a blower device to mix pre- treatment chemical and the raw water in the first tank;
  • the frame support is made of rigid members assemblable to provide a collapsible frame support and is capable of holding two water tanks.
  • the first tank is positioned above a second tank.
  • the tanks are formed by bags consisting of water impermeable flexible sheet which is of canvas sheet.
  • a chemical dosage means is mountable on top of the first tank, and it is capable of discharging pre-treatment chemical into the first tank.
  • the disinfectant unit is a UV disinfectant unit to disinfect living microorganisms in the pre-treated water.
  • the disinfectant unit and the mixing means are powered by solar energy panel and a chargeable battery means. Alternatively, the disinfectant unit and the mixing means are powered using a permanent / fixed power supply.
  • the second tank includes bio-sand filter media comprising layers of sand, charcoal, fine and course gravel, and activated carbon each layer being separated by a permeable layer, wherein the permeable layer is at least one of a polyethylene sheet and a textile sheet.
  • FIGURE 1 is a perspective view of the framework to hold a first tank and a second tank in accordance with this invention
  • FIGURE 2 is a front view of an assembled tank utilizing the framework illustrated in Figure 1 in accordance with this invention
  • FIGURE 3 is a back view of an assembled tank shown in Figure 2 in accordance with this invention
  • FIGURE 4 is a perspective view of a first assembly of perforated PVC pipe to be placed in the first tank in accordance with this invention
  • FIGURE 5 is a perspective view of second assembly of perforated PVC pipe to be placed in the second tank in accordance with this invention
  • FIGURE 6 is a flow diagram of the method of purification of water in accordance with this invention.
  • FIGURE 7 is a diagrammatic see through perspective view of the purification apparatus minus the canvas sheet forming a tank in accordance with this invention
  • FIGURE 8a and FIGURE 8b show a layout of a canvas sheet which is shaped to form a container for the raw water tank and the filtration tank before being fixed to the framework in accordance with this invention.
  • FIGURE 1 discloses a perspective view
  • FIGURE 2 a front view
  • FIGURE 3 a rear view of a framework (13) to hold a first tank (10) and a second tank (12) in accordance with this invention.
  • raw water collected from a water source such as lake or pond water, rain water, ground water, and river water is filled in a first tank (10) referred to as raw water tank.
  • a pre-treatment chemical such as alum is added to a dripper system (1 1 ) to dispense the pre-treatment chemical into the first tank (10).
  • the pre- treatment chemical is used to flocculate the raw water and can include aluminium sulphate (alum), polyaluminium chloride (PAC), ferrous sulphate, sodium aluminate, silicon derivates, lime or any chemical compound to facilitate flocculation of fresh water.
  • the water is agitated using a mixer apparatus such as a stirrer and /or a blower commonly used to agitate or stir liquids contained in a receptacle.
  • the mixer process is carried out for at least 15 minutes after which the treated water is allowed to settle for at least 30 to 90 minutes depending on the turbidity of water. Flocculated matter will settle at the bottom part of the first tank (10).
  • FIGURE 7 which discloses a perspective view of the purification apparatus, the flocculated matter settled at the base of the tank is flushed out periodically by opening a discharge valve (15) attached to the basal region or base of the first tank (10).
  • Pre-treated water from the first tank (10) is introduced into a second tank (12) referred to as the filtration tank via a first perforated pipe assembly (14) (see FIGURE 4).
  • the pre-treated water in the upper part of the first tank (10) is introduced into the first perforated pipe assembly (14) via at least one valve controlled release pipe conduit (24) which is secured to the side wall of the raw water tank (10).
  • the pre-treated water in the first perforated pipe assembly (14) flows down by gravitational force into a pre-strainer unit (16) placed in between the first tank (10) and the second tank (12).
  • the first perforated pipe assembly (14) facilitates even distribution of water into the pre-strainer unit (16).
  • the pre- strainer unit (16) includes a media to filter large solid particles.
  • the filter media in the pre-strainer (16) is at least one sheet of polyethylene cloth with pores between 25 ⁇ to 200 ⁇ , preferably at best 50 ⁇ .
  • the now strained water drops into the filtration tank (12) by gravitational force where it is filtered by a bio-sand filtration media (to be described later).
  • the filtered water flows into a second perforated pipe assembly (18) (see FIGURE 5) at the bottom of the filter media from where it flows into a valve controlled discharge pipe (36) to a UV disinfection unit (20) and is discharged into a collection receptacle (not illustrated).
  • the discharged water is now purified and is in a potable state.
  • the apparatus comprises a rigid rectangular framework (13) to receive and hold at least two water tanks.
  • the rigid rectangular framework (13) comprises of a metal framework, more preferably aluminum framework with dimensions such as 1 .2 m (L) x 0.6 m (W) x 1 .5 m (H).
  • Canvas sheet (28) preferably of food grade such as Detex tarpaulin (see FIGURE 8a) shaped into an open six sided bag is secured to the rigid rectangular framework (13) to form a container like a box-shape structure (see FIGURE 8b).
  • the edges of the non-shaped canvas sheet are secured together to form a water proof canvas bag to form a rectangular tank shaped container (30) (see FIGURE 8b) which is introduced into the upper portion as the first tank (10) and lower portion of the rigid rectangular framework (13) as the second tank (12).
  • the upper edges of the canvas rectangular shaped container (30) are removably secured to the upper peripheral beams of the rigid rectangular framework (13).
  • the base of the container rests on a first base plate (32) in the rigid framework.
  • the base plate could be a wire-mesh tray or a plate with perforated holes or a solid plate.
  • at least one valve controlled release pipe (24) is secured to the side of the container.
  • the release pipe (24) is in fluid connection with the first perforated pipe frame assembly (14).
  • a pre-strainer unit (16) is positionable below the first tank (10).
  • the pre-strainer unit (16) places at least one sheet of filter material such as the polyethylene cloth with 25 ⁇ to 200 ⁇ micropores, preferably with 50 ⁇ micropores.
  • the peripheral edges of the sheet are removably secured to the peripheral frame of the pre-strainer unit (16).
  • a second tank (12) made of canvas sheet is secured to the second tank framework in the rigid framework.
  • a second perforated PVC pipe assembly (18) is introduced onto the first base plate (32) of the second tank (12).
  • a sand filter media is constructed.
  • the sand filter media comprises of separate layers of sand, charcoal, fine and coarse gravel and activated carbon which are introduced onto the base of the second tank (12), above the second perforated PVC pipe assembly (18).
  • Each media layer of sand, charcoal, gravel, activated carbon are separated by separate sheets of permeable material such as polyethylene cloth, textile cloth and material such as woven or non-woven plastics essentially to keep the different media separate and for ease of maintenance of the filter media.
  • Water which has passed through the filter media enter the second perforated pipe assembly (10) and flow upward into a release pipe (36) whose end is secured to disinfector apparatus (20).
  • a disinfector apparatus (20), preferably a UV light disinfector apparatus (20) is secured to the external side of the bottom region of the rigid framework (13). Water from the release pipe (36) is introduced into the UV light disinfector apparatus (20) at rate of at least 1 -20 liters/minute.
  • the disinfected water where living microorganisms present in the water are killed by UV radiation is now discharged into a receptacle.
  • the discharged water is purified and is potable.
  • the present apparatus of the size described herein can yield up to 3,000 liter of potable water per day.
  • the Table 1 below shows the parameters of the raw water being introduced into the first tank (10) and the parameters of the treated water as discharged from the UV disinfectant unit (20).
  • Turbidity R ⁇ 1000 31 20 60 45 50 30 280 250 (NTU) W
  • TCU Color (TCU) R ⁇ 100 12 10 12 13 15 12 22 20
  • Table 1 Test results showing comparison between parameters of raw water and water treated by the present invention.
  • a solar panel 38
  • the solar panel (38) is connected to a modular power unit (40) and battery charging means to power the mixer apparatus and the disinfectant unit (20).

Landscapes

  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

L'invention concerne un procédé et un appareil de purification d'eau brute. Le procédé comprend les étapes consistant à : ajouter et mélanger un produit chimique de prétraitement, tel que l'alun, dans un premier réservoir contenant de l'eau brute, laisser décanter les floculants présents dans l'eau prétraitée du premier réservoir, filtrer préalablement l'eau décantée du premier réservoir et transférer celle-ci dans un second réservoir contenant un filtre à sable biologique, et introduire l'eau filtrée provenant du second réservoir dans une unité de désinfection par UV. L'invention concerne en outre un appareil de purification d'eau comprenant au moins deux réservoirs pouvant être assemblés sur un cadre support, une unité de pré-filtrage destinée à recevoir l'eau prétraitée provenant du premier réservoir, des supports de filtre à sable biologique placés dans le second réservoir, une unité de désinfection pour supprimer les micro-organismes vivants et des moyens de mélange pour mélanger le produit chimique de prétraitement et l'eau dans le premier réservoir. Les moyens de mélange et l'unité de désinfection par UV sont alimentés par une source d'énergie à panneaux solaires.
PCT/IB2015/051149 2014-02-19 2015-02-17 Procédé de purification d'eau et appareil correspondant WO2015125063A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2014000457 2014-02-19
MYPI2014000457 2014-02-19

Publications (1)

Publication Number Publication Date
WO2015125063A1 true WO2015125063A1 (fr) 2015-08-27

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ID=53877682

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/051149 WO2015125063A1 (fr) 2014-02-19 2015-02-17 Procédé de purification d'eau et appareil correspondant

Country Status (1)

Country Link
WO (1) WO2015125063A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110776121A (zh) * 2019-11-23 2020-02-11 江苏蓝创环保科技有限公司 一种多级化污水处理设备
WO2021256330A1 (fr) * 2020-06-17 2021-12-23 株式会社水循環エンジニアリング Dispositif flexible de traitement des eaux usées
RU2775552C1 (ru) * 2021-03-30 2022-07-04 Общество с ограниченной ответственностью "ИНВЭКО" (ООО "ИНВЭКО") Способ очистки фильтрационных вод полигонов захоронения твердых бытовых отходов

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6419821B1 (en) * 2000-02-25 2002-07-16 Waterhealth International, Inc. Apparatus for low cost water disinfection
US20050023223A1 (en) * 2001-10-20 2005-02-03 Seisuke Takashima Composite filter and method and apparatus for producing high purity water using hte composite filter
US20060070947A1 (en) * 2002-09-16 2006-04-06 Wayne Conrad Method and apparatus for treating water
US20110303589A1 (en) * 2009-01-13 2011-12-15 Access Business Group International Llc Gravity feed water treatment system
US20120211430A1 (en) * 2009-10-26 2012-08-23 Jin Nak Choi High speed filtration device using porous media, and backwash method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6419821B1 (en) * 2000-02-25 2002-07-16 Waterhealth International, Inc. Apparatus for low cost water disinfection
US20050023223A1 (en) * 2001-10-20 2005-02-03 Seisuke Takashima Composite filter and method and apparatus for producing high purity water using hte composite filter
US20060070947A1 (en) * 2002-09-16 2006-04-06 Wayne Conrad Method and apparatus for treating water
US20110303589A1 (en) * 2009-01-13 2011-12-15 Access Business Group International Llc Gravity feed water treatment system
US20120211430A1 (en) * 2009-10-26 2012-08-23 Jin Nak Choi High speed filtration device using porous media, and backwash method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110776121A (zh) * 2019-11-23 2020-02-11 江苏蓝创环保科技有限公司 一种多级化污水处理设备
WO2021256330A1 (fr) * 2020-06-17 2021-12-23 株式会社水循環エンジニアリング Dispositif flexible de traitement des eaux usées
RU2775552C1 (ru) * 2021-03-30 2022-07-04 Общество с ограниченной ответственностью "ИНВЭКО" (ООО "ИНВЭКО") Способ очистки фильтрационных вод полигонов захоронения твердых бытовых отходов

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