WO2019207370A1 - Système de micro-injection et de dosage d'oxygène pour eaux de rejet d'une centrale hydro-électrique - Google Patents

Système de micro-injection et de dosage d'oxygène pour eaux de rejet d'une centrale hydro-électrique Download PDF

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Publication number
WO2019207370A1
WO2019207370A1 PCT/IB2019/052237 IB2019052237W WO2019207370A1 WO 2019207370 A1 WO2019207370 A1 WO 2019207370A1 IB 2019052237 W IB2019052237 W IB 2019052237W WO 2019207370 A1 WO2019207370 A1 WO 2019207370A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxygen
type
steel
panel
discharge
Prior art date
Application number
PCT/IB2019/052237
Other languages
English (en)
Spanish (es)
Inventor
Paola Andrea SANCHEZ CASTELLANOS.
Nelson William QUINTERO BURGOS.
Juan Diego ACERO ZULUAGA.
Hector Enrique LIZCANO
Original Assignee
Emgesa S.A., Esp.
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 Emgesa S.A., Esp. filed Critical Emgesa S.A., Esp.
Priority to PE2020001438A priority Critical patent/PE20201333A1/es
Publication of WO2019207370A1 publication Critical patent/WO2019207370A1/fr

Links

Classifications

    • 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
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • 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
    • C02F3/12—Activated sludge processes
    • C02F3/26—Activated sludge processes using pure oxygen or oxygen-rich gas
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/02—Fixed barrages
    • E02B7/04—Dams across valleys
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
    • E02B9/02—Water-ways
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • 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

  • Hydroelectric power plants use gravitational potential energy that has a body of water due to the presence of a drop in a natural or artificial channel, to produce mechanical energy through the passage of water in its fall between two levels, through a hydraulic turbine , which transmits energy from said flow to an electric generator thus transforming the mechanical energy of the flow into electrical energy.
  • a hydroelectric power station consists of a dam that raises the water level of a natural source to create a water fall and control its flow. Additionally, the hydroelectric power station comprises a turbine that is driven by the force of the falling water pushing against the vanes of the same by turning it; and a generator that is connected to the turbine, which converts the mechanical energy of the turbine into electrical energy.
  • the dam forms a reservoir of water, which is often devoid of oxygen due to stagnation, said decrease in oxygen represents an ecological risk since dissolved oxygen (OD) is indispensable in the ecosystems for oxidation processes. reduction, aerobic respiration of microorganisms and animals, solubility of minerals and the decomposition of organic matter, among others. Therefore, once this body of water with low concentrations of OD introduced into a discharge channel, it is transported downstream generating potentially dangerous environmental effects, especially for wildlife.
  • OD dissolved oxygen
  • this system has the disadvantage that aerators require an optimum level of water pressure between approximately twenty and twenty-five pounds per square inch as water enters each aerator so that each aerator can efficiently discharge eight to ten milligrams per liter of dissolved oxygen.
  • the present invention relates to a micro injection and oxygen dosing system to increase the OD in discharge waters of a hydroelectric.
  • Figure 1 shows that a hydroelectric plant is characterized by comprising, for example: a dike (A), a landfill (B), a bypass tunnel (C), a dam (D), a machine house (F), a loading tunnel (G) and a discharge channel (E).
  • A a dike
  • B a landfill
  • C bypass tunnel
  • D a dam
  • F machine house
  • G loading tunnel
  • E discharge channel
  • Figure 2 illustrates a machine house (F) together with the discharge channel (E).
  • the micro injection and oxygen dosing system of the invention has been designed to be installed in the position (1) of the discharge channel (E) of a hydroelectric plant or in the riverbed.
  • the micro injection and oxygen dosing system of the invention comprises panels constructed with steel pipes for transporting oxygen or air, connected perpendicularly with microperforated hoses that release oxygen bubbles or air fed through said microperforations.
  • the aforementioned system allows oxygen to be added to bodies of water with high flow rates and high discharge speed, that is to say around 7 m / s or greater.
  • Figure 1 shows the general structure of a hydroelectric from a panoramic view.
  • Figure 2 illustrates a machine house of a hydroelectric plant.
  • Figure 3 illustrates the Type II Panel of the invention.
  • Figure 4 illustrates the possible connection between two Type II panels of the invention.
  • Figure 5 illustrates the Type I Panel of the invention.
  • Figure 6 illustrates the process for oxygenation of discharge water from a hydroelectric plant of the invention.
  • Figure 7 illustrates particular embodiments of the oxygenation system of the invention by the combination of Type I and Type II panels.
  • FIG. 8 illustrates the feeding system for the micro injection and oxygen dosing system of the invention.
  • the pipes 12a and 12b can have a diameter of 3 ”(80 mm) to 10” (250 mm), where the diameter selection will depend on the amount of oxygen to be injected, which in turn is dependent on the quality of water and the discharge of discharged water.
  • Microperforated hoses that can be made of rubber or latex.
  • the characteristic microperforations of the hoses of the invention have a diameter of 0.03 to 0.09 mm.
  • the microperforation has a diameter of 0.07 mm.
  • Figure 3 illustrates a preferred non-limiting embodiment of a Type II Panel (1 1) of the micro injection and oxygen dosing system of the invention, characterized by comprising a steel pipe (12a) and a steel pipe (12b ).
  • a steel pipe (12a) To the steel pipe (12a) microperforated hoses (13) are connected perpendicularly by means of triclamp steel hose connectors (14).
  • Figure 4 shows the joining of the microperforated hoses (13) to the steel pipes (12a) further comprising nipples (21) and splints (22) to ensure the flow of oxygen or air gas from the steel pipes (12a) to the microperforated hoses (13).
  • the steel pipes (12a) are connected to steel pipes type (12b) by elbows (18) welded and secured with triclamp couplings (16).
  • two steel pipes (12b) join a T (19), which in turn joins at the free end to a reduction pipe (24) that is connected to the oxygen or air gas supply and distribution pipe (25) shown in Figure 8.
  • the panel (1 1) can also optionally comprise an outlet pipe (20) attached to a T (19) located between two of the steel pipes (12b) as shown in Figure 4, where the outlet pipe (20 ) is attached to a second panel (1 1).
  • said pipe (20) may be absent, so that the panel (1 1) does not join another.
  • two steel pipes (12b) are connected to a T (19) whose third end is connected to a pipe (12a), to form a Type I Panel (26). Similar to the type II panel, the pipes (12a) further comprise nipples (21) and splints (22) to ensure the flow of oxygen gas or air from the steel pipes (12a) to the microperforated hoses (13).
  • the micro injection and oxygen dosing system of the invention is anchored to the discharge channel (E) in position (1) according to Figure 2, by installing stainless steel beams that support the system and are anchored. to the concrete of the discharge channel (E) by stainless steel bolts.
  • the exact location of each beam and bolt will depend on the particular conditions of the discharge channel (E) of the hydroelectric plant in which the micro injection and oxygen dosing system of the invention is installed, and which are obvious to the average expert in the matter.
  • oxygen storage tanks (2), evaporators (3), control units (4) and protection are installed of oxygen transport with its protection valves (5), and distribution pipes to the Type I and / or Type II panels.
  • micro injection and oxygen dosing system of the invention will comprise multiple Type II panels ( Figure 7A), multiple Type I panels ( Figure 7B) or a combination of Type I and Type II panels ( Figure 7C). Additionally, micro injection and oxygen dosing of the invention has the possibility of operating partially or totally with air, when coupled with the system by means of a mainfold (27), which makes the operation more flexible as shown in Figure 8.
  • the present invention relates to a process for the oxygenation of discharge water from a hydroelectric plant comprising the entry of discharge water (7) to the oxygenation zone, which comprises type I panels, Type II panels or a combination thereof as shown in position (8), through which oxygen gas is released from gas storage tanks (2).
  • the oxygenation method of the invention is efficient in increasing the levels of OD in the discharge water of a hydroelectric plant as evidenced in the following table:

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

La présente invention concerne un système de micro-injection et de dosage d'oxygène pour augmenter l'oxygène dissous dans des eaux de rejet d'une centrale hydro-électrique qui comprend des panneaux construits avec des tubes d'acier pour transporter l'oxygène ou l'air, raccordés perpendiculairement avec de manches micro-perforés qui libèrent des bulles d'oxygène ou d'air acheminé à travers les micro-perforations mentionnées. Le système mentionné permet d'ajouter de l'oxygène à des masses d'eau provenant de centrales hydro-électriques qui comprennent des débits élevés et une vitesse élevée de rejet.
PCT/IB2019/052237 2018-04-27 2019-03-19 Système de micro-injection et de dosage d'oxygène pour eaux de rejet d'une centrale hydro-électrique WO2019207370A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PE2020001438A PE20201333A1 (es) 2018-04-27 2019-03-19 Sistema de micro inyeccion y dosificacion de oxigeno para aguas de descarga de una hidroelectrica

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CONC2018/0004570 2018-04-27
CONC2018/0004570A CO2018004570A1 (es) 2018-04-27 2018-04-27 Sistema de micro inyección y dosificación de oxígeno para aguas de descarga de una hidroeléctrica

Publications (1)

Publication Number Publication Date
WO2019207370A1 true WO2019207370A1 (fr) 2019-10-31

Family

ID=62814249

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/052237 WO2019207370A1 (fr) 2018-04-27 2019-03-19 Système de micro-injection et de dosage d'oxygène pour eaux de rejet d'une centrale hydro-électrique

Country Status (4)

Country Link
CL (1) CL2020002413A1 (fr)
CO (1) CO2018004570A1 (fr)
PE (1) PE20201333A1 (fr)
WO (1) WO2019207370A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110952511A (zh) * 2019-12-21 2020-04-03 福建省中达建设发展有限公司 一种泵站流道施工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6106729A (en) * 1999-01-20 2000-08-22 Prince; Jack E. Aeration assembly for dam sites
WO2002098544A1 (fr) * 2001-05-18 2002-12-12 Midwest Water Management, Llp Systeme d'aeration flottant a fines bulles
CN1398797A (zh) * 2001-06-11 2003-02-26 严泰庚 曝气槽快速安装曝气装置
WO2013116893A1 (fr) * 2012-02-06 2013-08-15 Collins Jack David Appareil de mélange

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6106729A (en) * 1999-01-20 2000-08-22 Prince; Jack E. Aeration assembly for dam sites
WO2002098544A1 (fr) * 2001-05-18 2002-12-12 Midwest Water Management, Llp Systeme d'aeration flottant a fines bulles
CN1398797A (zh) * 2001-06-11 2003-02-26 严泰庚 曝气槽快速安装曝气装置
WO2013116893A1 (fr) * 2012-02-06 2013-08-15 Collins Jack David Appareil de mélange

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110952511A (zh) * 2019-12-21 2020-04-03 福建省中达建设发展有限公司 一种泵站流道施工方法

Also Published As

Publication number Publication date
CL2020002413A1 (es) 2021-01-22
PE20201333A1 (es) 2020-11-25
CO2018004570A1 (es) 2018-07-10

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