[go: up one dir, main page]

WO1988007977A1 - Process and apparatus for purifying water on lake and sea shores - Google Patents

Process and apparatus for purifying water on lake and sea shores Download PDF

Info

Publication number
WO1988007977A1
WO1988007977A1 PCT/IT1988/000025 IT8800025W WO8807977A1 WO 1988007977 A1 WO1988007977 A1 WO 1988007977A1 IT 8800025 W IT8800025 W IT 8800025W WO 8807977 A1 WO8807977 A1 WO 8807977A1
Authority
WO
WIPO (PCT)
Prior art keywords
craft
boat
tow
tanks
oxygenation
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IT1988/000025
Other languages
French (fr)
Inventor
Giacinto Petrillo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1988007977A1 publication Critical patent/WO1988007977A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23114—Mounting the bubbling devices or the diffusers characterised by the way in which the different elements of the bubbling installation are mounted
    • B01F23/231142—Mounting the gas transporting elements, i.e. connections between conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/503—Floating mixing devices
    • 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 concerns an apparatus for carrying out purification of the waters of large basins by oxygenation, that can be used, for example, for purifying coastlines.
  • the aim of the invention is economical, efficient aeration of large bodies of water and in particular of coastlines.
  • the aim has been achieved by providing for an oxygenation unit (similar to those used in aeration tanks) to be made fast to a
  • sinkable craft and connected by means of tubes to a tow-boat on which are provided blowing means (compressor, blower) , for said unit to be towed by said tow-boat to the area to be purified, for it to be sunk there and for blowing to be carried out until the desired level of oxygenation is achieved, after which the craft is
  • sinking can be achieved with tanks that can be selectively filled with air or water, a pump being provided in this case on the tow-boat.
  • the apparatus can operate when sunk and kept immobile in the same 15. area and then be moved to another area or it can operate as it moves from one area to the next.
  • the oxygenation unit essentially consists of a series of diffusers, of a simlar type to those used in purification tanks, but preferably having a greater capacity. They are connected to a 20. series of pipes that inject oxygen or air into the diffusers. The latter are supported by a craft consisting of a platform made fast to some tanks which are connected, by means of a pipe network, both to a blower or compressor and to a water pump.
  • Both these devices are preferably mounted on a tow-boat where control taps are also provided for the respective valves.
  • the diffusers employed are preferably similar to those described by Italian utility model No. 23601 B/86.
  • Fig. 1 shows a side view of an apparatus according to the present invention during transport and operation;
  • Fig. 2 shows a top view of the apparatus in figure 1 •
  • Fig. 3 shows a bottom view of the sinkable craft,- 10.
  • Fig. 4 shows a section of the sinkable craft taken along the line
  • FIG. 5 shows an axonometric view of the same sinkable craft on tow.
  • Figures 1 and 2 show an apparatus consisting of a tow-boat 1 towing a craft 2.
  • a system 9 consisting of
  • the towed craft 2 (shown in detail in figures 3, 4 and 5) consist of a series of diffusers 5, precisely 10 diffusers disposed in two parallel rows, supported by a platform 6, under which are joined by means of a sling 8 two elongated tanks 7 side by side.
  • a pipe network 10 connects the system 9 to the
  • sinkable craft 2 In this pipe network 10 the following can be distinguished: a duct 12 that connects the blower 4 to a distribution network 20 for the diffusers, a duct 11 that connects the pump 3 to one end 18 of the tanks and a duct 13, equipped with a valve means 16, that connects the opposite end 19 of the tanks to
  • the tow-boat with its outlet outside the tow-boat.
  • the duct 11 has a branch 14. equipped with a valve means 15, that connects it to the duct 12.
  • the tow-boat 1 serves to tow the craft 2, into the tanks 7 of which air
  • valve 15 is shut
  • the air is simultaneously expelled through pipe 13 after passing through valve 16.
  • the craft 2 is in position and can proceed to oxygenate the water.
  • the blower 4 is operated with the tap 17 open: the air reaches the diffusers 5 through the distribution network 20
  • the tow-boat 1 can continue its course to allow the sinkable craft 2 to operate in a wide area.
  • the craft 2 is 20. re-floated by filling the tanks 7 with air (the tap 17 is shut) .
  • the water inside said tanks is pushed into duct 13 and discharged through it, tap 16 having been opened.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

An oxygenation unit (5) (similar to those used in oxygenation tanks) is made fast to a sinkable craft (2) and connected by means of a pipe network (10) to a tow-boat (1) on which blowing means (compressor, blower (4)) are provided; said craft (2) is towed by said boat (1) to the area to be purified, where it is sunk and blowing is carried out until the desired level of oxygenation is achieved, after which the craft (2) is re-floated. In particular the craft (2) can be sunk by means of tanks (7) that can be selectively filled with air or water, a pump (3) being provided on the tow-boat (1) in this case, with the relative pipes (11, 12) connecting it with the craft (2).

Description

"PROCESS AND APPARATUS FOR PURIFYING WATER ON LAKE AND SEA SHORES"
The present invention concerns an apparatus for carrying out purification of the waters of large basins by oxygenation, that can be used, for example, for purifying coastlines.
Large bodies of water with little movement (lakes, lagoons, gulfs 5. and coves, river loops) are subject to pollution caused by consumption of dissolved oxygen through biodegradation of the organic substances discharged into the water or through the presence of living organic substances derived from the first stage of the eutrophication process. In order to restore these waters to 10. an optimum state it is of prime importance that they be oxygenated. This also makes it possible to reduce the formation of algae.
However, oxygenation of these bodies of water is neither simple nor cheap because of wave motion, shipping conditions, and variations in pollution according to time and place. The aim of the invention is economical, efficient aeration of large bodies of water and in particular of coastlines.
The aim has been achieved by providing for an oxygenation unit (similar to those used in aeration tanks) to be made fast to a
5. sinkable craft and connected by means of tubes to a tow-boat on which are provided blowing means (compressor, blower) , for said unit to be towed by said tow-boat to the area to be purified, for it to be sunk there and for blowing to be carried out until the desired level of oxygenation is achieved, after which the craft is
10. re-floated.
In particular sinking can be achieved with tanks that can be selectively filled with air or water, a pump being provided in this case on the tow-boat.
The apparatus can operate when sunk and kept immobile in the same 15. area and then be moved to another area or it can operate as it moves from one area to the next.
The oxygenation unit essentially consists of a series of diffusers, of a simlar type to those used in purification tanks, but preferably having a greater capacity. They are connected to a 20. series of pipes that inject oxygen or air into the diffusers. The latter are supported by a craft consisting of a platform made fast to some tanks which are connected, by means of a pipe network, both to a blower or compressor and to a water pump.
Both these devices are preferably mounted on a tow-boat where control taps are also provided for the respective valves.
The diffusers employed are preferably similar to those described by Italian utility model No. 23601 B/86.
An apparatus according to a preferred embodiment of the present 5. invention is illustrated in the attached drawings in which:
Fig. 1 shows a side view of an apparatus according to the present invention during transport and operation; Fig. 2 shows a top view of the apparatus in figure 1 • Fig. 3 shows a bottom view of the sinkable craft,- 10. Fig. 4 shows a section of the sinkable craft taken along the line
4-4 in figure 2; Fig. 5 shows an axonometric view of the same sinkable craft on tow.
Figures 1 and 2 show an apparatus consisting of a tow-boat 1 towing a craft 2. On the tow-boat 1 is installed a system 9 consisting of
15. a pump 3 and a blower 4. The towed craft 2 (shown in detail in figures 3, 4 and 5) consist of a series of diffusers 5, precisely 10 diffusers disposed in two parallel rows, supported by a platform 6, under which are joined by means of a sling 8 two elongated tanks 7 side by side. A pipe network 10 connects the system 9 to the
20. sinkable craft 2. In this pipe network 10 the following can be distinguished: a duct 12 that connects the blower 4 to a distribution network 20 for the diffusers, a duct 11 that connects the pump 3 to one end 18 of the tanks and a duct 13, equipped with a valve means 16, that connects the opposite end 19 of the tanks to
25. the tow-boat 1, with its outlet outside the tow-boat. The duct 11 has a branch 14. equipped with a valve means 15, that connects it to the duct 12.
As far as use of the above described apparatus is concerned, the tow-boat 1 serves to tow the craft 2, into the tanks 7 of which air
5_ has been injected by means of the duct 11 (the pump 3 does not operate at this stage) to allow it to float. When the apparatus is in the desired place, i.e. in the area of the basin that is to be purified, the craft 2 is sunk (shown hatched in figure 1) by filling the tanks 7 with water delivered by the pump 3 into duct 11
10. (valve 15 is shut), while the air is simultaneously expelled through pipe 13 after passing through valve 16. At this point the craft 2 is in position and can proceed to oxygenate the water. In order to do so the blower 4 is operated with the tap 17 open: the air reaches the diffusers 5 through the distribution network 20
15_ supplied by the duct 12. This air creates a strong flow of water through the diffusers.
In this situation the tow-boat 1 can continue its course to allow the sinkable craft 2 to operate in a wide area. When the diffusers 5 are deemed to have operated for long enough, the craft 2 is 20. re-floated by filling the tanks 7 with air (the tap 17 is shut) . At the same time the water inside said tanks is pushed into duct 13 and discharged through it, tap 16 having been opened.

Claims

1. A process for purifying large basins, characterized in that it provides for an oxygenation unit (5) (similar to those employed in aeration tanks), to be made fast to a sinkable craft (2), for the unit to be connected by means of a pipe network (10) 5. to a tow-boat (1) on which are provided blowing means (compressor, blower 4) , for said unit to be towed by said tow-boat (1) to the area to be purified, for it to be sunk there and for blowing to be carried out until the desired level of oxygenation is reached, after which the craft is re-floated.
10.
2. A process according to claim 1, characterized in that the craft (2) is provided with tanks (7) that can be selectively filled with air or water, provision being made in this case for air or water to be delivered from the tow-boat (1) to the craft (2) and vice versa.
15.
3. A process according to claim 1 or 2, characterized in that the craft (2) is subsequently taken to other areas while still underwater, thus carrying out continuous purification of the coastline.
4. An apparatus for purifying large basins, characterized in
20. that it comprises an oxygenation unit essentially consisting of a series of diffusers (5) , of a similar type to those employed in purifying tanks, which are supported by a sinkable craft (2), the devices for delivery of oxygenation air being installed on a tow-boat (1) .
5. An apparatus according to claim 4, characterized in that - • the craft (2) consists of a platform (6) integral with some tanks
(7) which are connected, by means of a pipe network (10) , to the tow-boat.
6. An apparatus according to claim 4 or 5, characterized in that the blower (4) or compressor is mounted on the tow-boat (1)
TO. where control taps (15, 16, 17) or valves are also provided.
7. An apparatus according to any one of claims 4 to 6, characterized in that the diffusers (5) employed are those descri¬ bed in Italian utility model No. 23601 B/86.
PCT/IT1988/000025 1987-04-15 1988-04-15 Process and apparatus for purifying water on lake and sea shores Ceased WO1988007977A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2013687A IT1203904B (en) 1987-04-15 1987-04-15 PROCEDURE AND EQUIPMENT FOR THE RECLAMATION OF WATERS ON THE BANKS OF LAKES OR SEAS
IT20136A/87 1987-04-15

Publications (1)

Publication Number Publication Date
WO1988007977A1 true WO1988007977A1 (en) 1988-10-20

Family

ID=11164107

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1988/000025 Ceased WO1988007977A1 (en) 1987-04-15 1988-04-15 Process and apparatus for purifying water on lake and sea shores

Country Status (3)

Country Link
AU (1) AU1624788A (en)
IT (1) IT1203904B (en)
WO (1) WO1988007977A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329404A1 (en) * 1988-02-18 1989-08-23 TOM MAGUIRE & COMPANY LIMITED Aeration equipment
GB2234235A (en) * 1989-04-26 1991-01-30 Elisabeth Mary Campbell Aerating liquids
DE19524826A1 (en) * 1995-07-07 1997-01-09 Graeven Metalltechnik Gmbh Installation unit for positioning units in fluid - has heavy assembly lifted clear of water by inflatable bags linked to compressed air supply, for water treatment plant
US6050550A (en) * 1998-07-09 2000-04-18 Burgess; Harry L. Apparatus for aeration and bottom agitation for aqua-culture systems
US6086056A (en) * 1998-04-29 2000-07-11 Leask; Jim Float sink header
US7267766B2 (en) * 2003-09-15 2007-09-11 Pro-Act Microbial, Inc. Method and apparatus for aerating a surface layer in a stratified liquid body
US8011643B2 (en) * 2007-03-13 2011-09-06 Environmental Dynamics, Inc. Diffuser assembly with buoyancy vessel
CN108430614A (en) * 2015-11-23 2018-08-21 新西兰植物与食品研究所 Method and apparatus for releasing gas

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB758582A (en) * 1953-09-05 1956-10-03 Union Rheinische Braunkohlen Improvements in aerating water

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB758582A (en) * 1953-09-05 1956-10-03 Union Rheinische Braunkohlen Improvements in aerating water

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329404A1 (en) * 1988-02-18 1989-08-23 TOM MAGUIRE & COMPANY LIMITED Aeration equipment
GB2234235A (en) * 1989-04-26 1991-01-30 Elisabeth Mary Campbell Aerating liquids
GB2234235B (en) * 1989-04-26 1992-10-14 Campbell Elisabeth Mary Improved flotation for aerators
DE19524826A1 (en) * 1995-07-07 1997-01-09 Graeven Metalltechnik Gmbh Installation unit for positioning units in fluid - has heavy assembly lifted clear of water by inflatable bags linked to compressed air supply, for water treatment plant
US6086056A (en) * 1998-04-29 2000-07-11 Leask; Jim Float sink header
US6050550A (en) * 1998-07-09 2000-04-18 Burgess; Harry L. Apparatus for aeration and bottom agitation for aqua-culture systems
US7267766B2 (en) * 2003-09-15 2007-09-11 Pro-Act Microbial, Inc. Method and apparatus for aerating a surface layer in a stratified liquid body
US8011643B2 (en) * 2007-03-13 2011-09-06 Environmental Dynamics, Inc. Diffuser assembly with buoyancy vessel
US8246018B2 (en) 2007-03-13 2012-08-21 Environmental Dynamics International, Inc. Diffuser assembly with buoyancy vessel
CN108430614A (en) * 2015-11-23 2018-08-21 新西兰植物与食品研究所 Method and apparatus for releasing gas
EP3380219A4 (en) * 2015-11-23 2019-08-28 The New Zealand Institute for Plant and Food Research Limited METHOD AND APPARATUS FOR GAS RELEASE
CN108430614B (en) * 2015-11-23 2021-05-11 新西兰植物与食品研究所 Method and apparatus for releasing gas

Also Published As

Publication number Publication date
IT8720136A0 (en) 1987-04-15
IT1203904B (en) 1989-02-23
AU1624788A (en) 1988-11-04

Similar Documents

Publication Publication Date Title
US5316671A (en) Submersible aeration train and aeration apparatus for biological purification of sewage
US2825541A (en) Means for aerating water
CN108773970B (en) Floating type comprehensive water treatment equipment, water treatment method and backwashing method of equipment
US9266759B2 (en) Methods and apparatus for aeration of liquid medium and liquid medium treatment system
US5113889A (en) Floating intake for transport of liquid from a fixed depth below the surface of a reservoir
US4532038A (en) Flow control apparatus for aerobic sewage treatment
US4310264A (en) Buoyant pipe system
EP2028160A2 (en) Modular floating helophyt filter
WO1988007977A1 (en) Process and apparatus for purifying water on lake and sea shores
EP3290104A1 (en) Equipment and process for massive dissolution of gases in liquids
US8678358B1 (en) Buoyant aerator with support legs
JP2911078B2 (en) Water flow generation device and method for purifying closed water area using the same
US8622370B1 (en) Aerator air distribution manifold
US8622371B1 (en) Anchored aerator
JPH09187632A (en) Gas dissolution
JPH0839085A (en) Water purifying apparatus
CN106115914B (en) Starfish appearance biological processor
CN111453843B (en) Liftable oxygenation and anaerobic sludge digestion biochemical device
US4537679A (en) Conservation of momentum in a barrier oxidation ditch
CA2251965C (en) Aquaculture system
KR102789203B1 (en) A water treatment apparatus that creates and purifies water flow
JP2009507618A (en) System and method for dissolving a gas into a liquid and supplying the same dissolved gas
Beutel Improving raw water quality with hypolimnetic oxygenation
CN223255073U (en) An integrated device for water detection and purification
JP3113900B2 (en) Sewage purification equipment

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR CH DE DK FI GB HU JP KP KR LK LU MC MG MW NL NO RO SD SE SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BJ CF CG CH CM DE FR GA GB IT LU ML MR NL SE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642