Potable Water from Sea and Wind

by: infiniteseo Total views: 21 Word Count: 578
View PDF | Print View

Related Discussions Online:

New lows: S&P 500 806.18, SSO 21.97, TNA 24.0
Posted by mitchelltsai via Twitter

New Products and Contracts Generate Positive Q3 Results for China Energy Recovery Inc. (CGYV.OB)
Posted by feedthebull via FeedTheBull | Stock Market News

China Energy Recovery Reports Record First Nine Month Fiscal 2008 Financial Results with Revenue Growth of 112% (Business Wire via Yahoo! Finance)
Posted by nzpcs via The Rule

Being Discussed on FriendFeed

Open Question: If you gained weight on a short tapering dose of Prednisone, will it come off with diet and exercise?
I'm 48 years old. I had sinus surgery a few weeks ago and the doctor put me on a short tapering dose of Prednisone afterward. I've taken it before in a different manner (as a 5 day Medrol Dose pack). But this time he had me take three 10mg tablets all at once first thing in the morning. When I began tapering, I got terrible withdrawal symptoms (sweats, dizziness, lethargy, weakness). When I finally got off it totally(about 12 days later), I had an increased appetite and I've probably gained 5 to 8 lbs (I'm afraid to get on the scale, but I have a roll of fat on my back that was not there before and my belly is much bigger too). I'm 5'3" and before the surgery I weighed about 137 lbs (which is slightly overweight for me). I'm starting to get active again, which is hard because I have back problems. I'm scared that this new weight will not come off. I have been trying to eat less and eat better foods, but I don't want to do a calorie restriction diet for a few more weeks, until my body heals totally. I still don't have all my previous energy because the surgery and recovery took so much out of me (I was in a lot of pain for many days). If you've been on Prednisone, can you please tell me -- does the weight come off with diet and exercise after you are off of it? I really hope I'm not stuck with this extra roll of fat and a fatter face. I really hate it!!! read more...

Open Question: can anyone tell me in which packs these cards come in i want the name of the deck or booster pack these cards?
elemental hero neos elemental hero flame wingman elemental hero clayman elemental hero sparkam elemental hero clay guardman elemental hero neo bubbleman elemental hero necroshade elemental hero thunder giant elemental hero mudballman elemental hero rampart blaster elemental hero tempest elemental hero wildedge elemental hero shining flare wingman elemental hero steam healer elemental hero sailorman elemental hero wild wingman elemental hero elixier elemental hero necroid shaman winged kuriboh lvl m10 hero kid neo spacian flare scarab neo spacian aqua dolphin neo spacian air hummingbird neo spacian ground mole neo spacian glowmoss neo spacian black phanter feather shot burst return burst impact spark blaster bubble blaster bubble illusion bubble shuffle clay wrap mud max cyclene boomerang wild half skyscraper trandserent wings heated heart emergency call righteous justice oversoul hero flash de-fusion fusion gate fusion recovery metamorphosis mirage of nightmare emergency provision coragous charge spical hurricane pot of greed hero heart kuriboh summoning flute miracle fusion infiltration spy hero battle fusion fusion sage contact neo space fake hero skyscraper 2-hero city climax hour elemental sword metamorphosis neos energy instant fusion power charger hero signal hero barrier hero ring hero spirit a hero emerges clay charge feather wind edge hammer negate attack staunch defender super junior confrontation cross heart dimensional tunnel mirror gate mirror force insurance miracle kids solemn judgement invincible hero hero's rule 1: five freedoms soul union elemental burst final fusion hero ring disgraceful charity kids guard hero call i also forgot to pit some pther card her they are dark magician blue eyes white dragon (x3) read eyes b. dragon also forgot to put HERO FLASH plz tell me in which booster pack or deck this card comes in its ELEMENTAL HERO NEOS this is my favorite card of all i want it cuz its one of the coolest elemental heroes ever!!!!!!!!!!!!!!!!!!!!!!!! read more...

Western Australia's Water Corporation is on track to produce drinking water form a 45GL/a desalination plant located in Kwinana, 25km south of Perth. The plant is being built by proAlliance - a 50/50 joint venture between West Australian construction company Multiplex and French water treatment company Degremont. Degremont will operate the 140,000m3/d plant for 25 years under a public-private partnership with the West Australian government-owned Water Corporation. The construction cost is $387 million.

To reduce the environmental impact of the project electricity for the desalination plant will be produced from a wind farm located 30km east of Cervantes in WA's midwest. The 80MW wind farm has been engineered by the Queensland government-owned power generation company Stanwell Corporation and WA private company Griffin Energy. The wind farm will be operated by the WA government-owned power utility Western Power.

When complete Perth's desalination plant will ease pressure on WA's Integrated Water Supply Scheme. 45GL represents the single biggest water source feeding into the IWSS. To maintain water supplies for Perth's growing population the Water Corporation is pursuing a strategy of "security through diversity" and so is progressing engineering on a further desalination plant as well as developing the underground Yarragadee Aquifer to the south of Perth.

The Water Corporation has had to accelerate installation of desalination due to reduced rainfall in Perth's catchment areas.

The technology to be used for the desalination plant is reverse osmosis. Osmosis is a natural phenomenon that occurs when water diffuses through a semipermeable membrane to equalise the concentration of salt in a solution. The transfer of water is from the dilute to the concentrated solution. By applying energy in the form of water pressure water can be made to move in reverse from a concentrate solution to dilute solution - hence the term reverse osmosis.

A semipermeable membrane acts like a molecular sieve allowing water particles to pass through while stopping dissolved salts, viruses and bacteria. To reduce the area required to house the membrane, the membrane is wound onto a spiral. Water is pumped under pressure down the spiral and migrates to the centre.

In recent years improvements in membrane manufacture and energy recovery devices have reduced the capital and operating costs. The Perth plant will produce drinking water at less than $0.95/kl at the fence. Electrical power consumption is expected to be less than 4.5Wh/kl.

An important part of reducing power consumption is the energy recovery system which uses a ceramic pressure recovery device. A device called the Pressure Exchanger (PX), a trademark of US firm Energy Recovery, uses a cylindrical rotor with longitudinal ducts parallel to its rotational axis. The rotor spins inside the sleeve between two end covers with port openings for both streams. Pressure energy is transferred directly from the high-pressure concentrate/reject stream to the low-pressure feed/seawater stream. A liquid piston moves back and forth inside each duct creating a barrier that inhibits mixing between the streams. The low-pressure side of the rotor fills with seawater while the high-pressure side discharges seawater. This rotational action is similar to that of an old-fashioned machine gun firing high-pressure bullets that is refilled with new seawater cartridges while spinning around a central axis.

When complete the plant will employ 16 people and provide valuable technical expertise in operating a large-scale reverse osmosis plant. A comprehensive environmental monitoring program is an operating license condition to ensure that the marine environment, near the seawater inlet and brine outlet, will not be harmed.

About the Author

Roger Kelson and Gary Crisp write for Civil Engineers Australia relating to Energy Recovery Inc., a Clean Technology Company that provides affordable Seawater Desalination with the PX Pressure Exchanger which reduces energy costs up to 98%.