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By Larry Price

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How Wastewater Treatment Has Become More Environmentally Friendly

The treatment of wastewater is an important part of the water cycle and fundamental to the health of the environment. The water we use in our homes, businesses as well as that used in industry is likely to have gone through some form of wastewater treatment at some point. The amount of uses we have for water means that for a suitable supply to be maintained, wastewater treatment is essential, added to this it is vital for our environment.

Wastewater treatment for the lay reader can also be termed as the treatment of sewage, although the term wastewater also refers to industrial runoff as well as domestic. The reason we must put our wastewater through treatment facilities is that despite nature's excellent ability to cope with wastewater and filter it in its own way, without dedicated treatment plants the natural filtration processes would be inundated and overwhelmed.

The human civilisation produces billions of gallons of wastewater in any twelve month period and if this were not treated the environment would greatly suffer. The process of wastewater treatment is relatively complex and requires a multi-faceted approach. The separation of waste elements and the water that carries them is the ultimate goal.

The primary stage in wastewater treatment is designed to remove the majority of foreign elements. The treatment process includes letting the wastewater settle so the solid objects fall to the bottom. This solid matter is sometimes passed onto the agricultural industry to use as fertiliser. In addition, some treatment facilities use chemicals to speed up the settling process, this however can sometimes harm the environment.

Source: Articlesbase

By Larry Price

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Wastewater Treatment Methods

Water is available to anyone for no cost. It can be found in so many places. The earth is comprised of mostly water. Human depend on water for every day things and it is up there with needing food. Some of the daily chores that we must complete can not be done without water to help. When water is used, can it be recycled to be available again?

Even wastewater is recyclable when it completes a process known as wastewater treatment. There is not only one method for wastewater treatment. Many of the methods are still as good today as they were years ago. This method of wastewater treatment gets rid of the odor by getting rid of the algae or bacteria in the water. The taste is also made better by chemicals being added to it in other treatment processes. The particles are gotten out with a filtration process. Methods for treating wastewater differ in many ways to ensure that the water is clean and safe for you to reuse again and again.

Wastewater Filtration

the method for treating wastewater that is know as filtration, takes out the particles in the wastewater by grabbing the particles and letting the remaining water flow through a membrane. The filter sifts the water and the particles causing them to separate from each other. More than one filter type is available for the filtration method. Simple filters that resemble fine nets are also utilized for the smaller particles in the water. For micro sized particles, an advanced system for filtering is needed.

Each filter has its own life expectancy. After the filter has been used for an extended period of time and the particles are gathered into the filter, the water will start to flow through it slowly. To eliminate the gathered particles from the filter, it will need to be washed by a method called backwashing. Taking the filter and flipping it inside out and running water through it will separate the particles from the filter. If this method does not help the flow of water through the filter, replacement of the filter is necessary. Read more about Water Filter System.

Wastewater Aeration

Industries use the aeration method of treating wastewater more than the residential sectors do. Aeration simple means that air is brought to the water. The water becomes oxygenated by the air. This process is completed to get rid of the foul odor creating chemicals. These chemicals could be ammonia or hydrogen sulfide. There are many different ways to aerate the water.

Diffused aeration is completed by making bubbles in the water while aeration by a spray is completed by spraying the water in the air. Repeated aeration is done by letting the water go through the many conduits before it is allowed to mix in the air. The cascading aeration is completed to make little waterfalls that allow the water to flow through many layers. The final type of aeration is stripping. This stripping mixes multiple aeration and cascade aeration together.

List of waste water treatment technologies

Source: Ezinearticles

By Larry Price

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Best Water Treatment

There are many commercial ways of treating hard water including water filters, water softening, electromagnetic water conditioners and reverse osmosis. In this final section in the series we will look at the pros and cons of several of the available methods to treat hard water.

Chemical Water Softeners

Description - Chemicals are added in laundering process.

Advantages - Removes calcium and magnesium whilst also lengthening lifespan of clothes.

Disadvantages - Output water is not fit for drinking.

Water Filters

Description - Drinking water from the tap is filtered with a portable unit.

Advantages - Output water is fit for drinking. Chlorine is removed and the water is softened.

Disadvantages - Does not prevent limescale deposits in pipes and heating system.

Approximate Cost - < £0.03 ($0.05) / litre

Mechanical Water Softeners

Description - Permanently installed in plumbing system to replace calcium and magnesium with sodium.

Advantages - Prevents limescale and increases heating efficiency. Also lengthens lifespan of clothes.

Disadvantages - Output water may not be suitable for drinking.

Approximate Cost $1400 per unit to install plus $140 per year in salt and electricity.

Magnetic Water Conditioners

Description - Permanently installed in plumbing system to alter calcium ions to prevent limescale.

Advantages - Output water is fit for drinking. Prevents limescale and increases heating efficiency. Lengthens lifespan of clothes. Calcium is retained in water which is good for diet. Has low running costs.

Read more about Water Purification Systems..

Read more..

By Larry Price

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Reverse Osmosis System Advantages

Water is essential to all living things. To function properly, your body needs about 1500 grams (1.5 liters) of water per day. The body of an adult is composed of approximately 60% of water: the lymph 96%, the blood 80%, muscles 75% and the bones 30%. The mass of a fetus, however, is made up of 90% water. Water is indispensable to your life. That is, stopping drinking water means death.

However, if inadequate or no water in the organs is relatively death, consumption of untreated water (any water that is not treated, filtered, or boiled to eliminate infectious bacteria, viruses, and parasites) can also lead to death. Even if water in your house is from a private source, it may contain contaminants that can damage you’re your body. Chemical composition of water is complex; a simple water treatment system may not destroy all pollutants containing your water; you need an effective water purification system. Today, there are three main forms of water treatment available, ultraviolet, filtration and reverse osmosis, the most advantageous.

Reverse osmosis systems purifies water without changing its taste and its nutritional effects. With a semi-permeable purifying membrane, during the purification process, the reverse osmosis system retains all pathogenic minerals, heavy metals, nitrates, fluoride, spores, sediments and chlorine to give you fresh and healthy water. In addition, the reverse osmosis units make no noise, and can eliminate up to 99% of harmful elements in the water.

Purification of water by reverse osmosis includes at least 4 stages :

  1. The untreated water passes through a particulate filter, which retains silt, sediments, sand and clay particles that might clog the reverse osmosis membrane.

  2. After the initial treatment, the water is then channeled to a activated carbon filter that holds minerals and other harmful particles (chromium, mercury, copper, chloramines and pesticides).

  3. In the third phase, water is transported under pressure in the reverse osmosis module, which only clean water can pass through the pores of the filter. All the impurities are retained and evacuated through the pipe and the treated water is stored in a special tank.

  4. Finally in the last phase, the treated water passes through an activated carbon filter to improve taste and odor; resulting in fresh and healthy water ready to be used.

More benefits of reverse osmosis

Reverse osmosis systems purify water from unnecessary minerals, organic chemicals and other impurities that make water not only heavy to be drunk, but also pathogenic. This process eliminates all pollutants in the water and improves its taste. In addition, water treated by reverse osmosis, is devoid of extra sodium and potassium, and does not produce scale in kettles and coffee makers. Our reverse osmosis water systems remove all impurities in your water that what remains is what you want: cool, safe and truly pure water.

Source: Articledashboard.com

By Larry Price

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Need to Get a Water Filter System?

So you need to remove that foul taste from your drinking water and get rid of potentially harmful contamination, you know you want a water filtration unit but not really sure how to choose?

Water filter systems come in a vast array of styles and specifications, from really simple pitchers costing very little or a counter top, faucet mount unit which can be very easy to install. These usually require no tools and can be installed for a couple of hundred dollars.

Top of the range systems for the whole house can cost up to a couple of thousand dollars and are very adaptable, having many stages and types of filtration.

Hundreds of specifications are available through different suppliers, there will almost certainly be at least one for your requirements and as the saying goes you will generally "get what you pay for".

Being very straight forward to install and maintain, the countertop units are very popular, the undersink versions are better if you want the unit hidden and are still pretty easy to fit.

If you need more than just one outlet with filtered water, then a full house system will be what you want, they do cost more but are much more adaptable than the more basic units, they will have high flow rates and possibly numerous upgrade options.

Refrigerator or ice maker adapters are sometimes available either with the units or more often to buy separately.

So as you can see, it could definitely be worth your while considering installing a water filtration system. It could be that you need to remove certain contaminants, or perhaps to improve your water supplies taste and maximize potential health benefits from this water system.

Source: Ezinearticles

By Larry Price

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What You Should Know About Reverse Osmosis Water Purifiers

Reverse osmosis water purifiers were designed long ago for removing salt from sea water or basic desalination. It did a great job and was commended for it. The reverse osmosis system was again called upon after by the printing industry, as it needed clean de-mineralized water for its machines.

In both of the above applications it worked very well. However, how can a reverse osmosis system designed for industries just naturally turn to home use? This problem is not the fault of the technology. It's just an incorrect application of the technology and basically, a big mistake.

The reverse osmosis water purifiers do such a good job that they have filtered all the minerals out of our water. But wait a minute, we needed those minerals! The reverse osmosis system removed what we needed in our water and replaced it with something else.

The reverse osmosis water purification system take 4 gallons of water and convert it to 1 gallon of purified water. In the process it casts out 3 gallons. How can a system like that be afforded? The reverse osmosis system cannot keep doing that and be very popular. Imagine the amount of waste.

Additionally, it would take a long time to filter a little water. Three or four hours is required to filter and clean 1 gallon. The reverse osmosis water purifiers take such a long time. How can a filter survive when it has such a record? A reverse osmosis sysem is not an answer to home water filtration.

It takes out all of those minerals, but there are some things that it cannot take out. Herbicides, pesticides and chlorine are some of them. No matter how hard it tries reverse osmosis water purifiers cannot remove those chemicals. That is because the chemicals are lighter than the water and anything lighter than water is left in.

To reach something close to what reverse osmosis water purifiers produce, you would have to take some distilled bottled water, then add some pesticides and chlorine. They have the gall to call that purified water. It is a cocktail of things we do not need. The reverse osmosis system is the opposite of what would be termed a good filter.

The reverse osmosis system was designed for a purpose different to what it is being used for. The reverse osmosis water purifiers are not at fault. You cannot take a commercial filter and expect it to work as a home system.

We know now why the reverse osmosis system does not work in the home environment. Salesmen and manufacturers would like for us to believe the technology is far advanced, when in fact it is old technology. Today's in-home water purifiers are far superior. The reverse osmosis water purifiers stand out as an example that just because something has an industrial application does not mean it will work at home.

The reverse osmosis system was very popular when it was built, for the technology did the job that it was built to do and it did it very well. But slowly people are finding out how inadequate reverse osmosis water purifiers really are. There are far better systems on the market from Water system.

By Larry Price

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Reverse Osmosis Systems

For several generations, you have been told that water is good for you and everyone should drink more. This has always made perfect sense because the body is made up of 55-78% water depending on size, and without adequate hydration, life cannot be sustained. Now that you know how necessary water is you should also know that there are chemicals in water that can be very harmful.

Years of pollution and toxic waste have created unsafe water in many places, even your tap. To combat this problem the government has implemented many regulations to clean up our water supply, however it is a simple case of too little too late. This has led many people to install home (RO) Reverse Osmosis systems to filter their drinking water.

The problem is health through reverse osmosis systems is not guaranteed. Several large facilities use these kinds of water filtration and the water is still not clean enough to pass Food and Drug Administration standards for drinking water, and let's face it, those standards were not very high anyway. With current regulations in place there are no less than 2000 cancer causing substances that make it into your tap water that are invisible to the naked eye and a home reverse osmosis system will not capture many of them. Of course, if you live in an area where contaminants are visible you can improve your health through reverse osmosis system in conjunction with other water filtration.

Many people are still not worried about their drinking water because they can always purchase it from the grocery store. The problem is according to many studies this water is no cleaner than your tap water! Officials from the FDA have said that bottled water companies are by and large defrauding consumers.

So if a home reverse osmosis system will not protect you and clean your drinking water, how do you protect your health? Well, unlike bottled water or home reverse osmosis systems, water filters must have documentation to prove the clarity of the water they filter. In fact, in many states it is a crime to make uncertified claims about filters efficiency.

In order to provide clean water for you and your family members, you should look into water filtration systems for your home. These come in many varieties from simple water bottle filters to complete home systems. Below is the basic information:

* Sport Bottle -- If you are constantly on the go, a sport bottle that filters tap water is the perfect item. These bottles generally come with several replaceable filters and each one will last approximately 60 days or 60 gallons of water. That gives you the ability to filter 180 gallons of water for less than $40!

* Faucet Filters -- A faucet filter comes in two types; under counter and above. The main difference is the price; for a little more you can hide your water filtration beneath the counter. These twin filter systems can filter up to 500 gallons before needing a filter change.

* Complete House -- If you are in the market for a water filter that covers the entire house, a complete system is for you. Enjoy softer skin and hair after just one shower with a complete home filter in place. These systems are very easy to maintain and only require filter replacement once every three years.

Source: Ezinearticles

By Larry Price

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Water Purification Technology

It seems like every time you turn your head someone is talking about our polluted environment and how it is effecting our food, air and water. Nothing has had a greater impact on protecting us from environmental contamination than water purification technology. However, not all methods of water purification systems are created equally. Different methods produce different results. So how can you be sure to pick the method that is best suited to meet the needs of you and your family?

In order to help answer that question, let's look at a brief description of some of the different methods of water purification and their different results.

Chlorination

Chlorination is one of the oldest, and most widely-used water treatment methods. 100 years ago, the discovery of chlorine as an effective disinfectant meant that devastating, water-borne epidmics such as cholera and typhoid could finally be wiped out. But as times have changed, so have our water purification needs. The threat of disease has been replaced by environmental toxins. As such, the need for disinfection has been replaced by the need for filtration.

Unfortunately, chlorine has now also been identified as having its own toxic properties, including releasing dangerous chloroform gas, and causing leaching of lead when coming into contact with aging home plumbing. Chlorine also fails to disinfect intestinal parasites such as cryptosporidium, and giardia, which can be especially tough on a child's developing intestinal tract. As far as water purification technology goes, chlorination is definitely out-dated.

Bottled Water

No one knows what types of methods of water purification, if any, are used to produce bottled water. The government does not require bottled water to be any cleaner than tap water. You basically have to take the word of the bottled water company that you're getting safe, clean water.

Bottled water can also be expensive and results in an inordinate amount of environmental waste. Over 60,000,000 plastic bottles are produced, transported and disposed of EVERY DAY in the U.S. alone!

Despite having some major drawbacks, this so-called water purification technology, continues to be popular with consumers.

Distillation

One of the methods of water purification that still enjoys wide-spread use is distillation. This is a complex process where water is passed over a hot coil, in order to create water vapor. This vapor is sent to a cooling chamber so that it condenses back into liquid form. This process results in a separation between water and inorganic substances like lead, calcium, magnesium etc. Bacteria are also destroyed.

Distillation is a water purification technology that was originally developed for industrial use. But because of the increase in demand for in-home water treatment, distillation companies took advantage of the marketing opportunity. However this process is not very effective removing organic chemicals, so a carbon filtration system must be added to make the water truly safe for drinking. Carbon filters require regular changing since they can quickly become breeding grounds for bacterial growth.

While distilled water is safe, it isn't healthy, since it has been de-mineralized. This form of water purification technology is also very slow and costs approximately 20 - 26 cents per gallon. Add to that the cost of the carbon filter and the result is an unwieldy water purification system.

Reverse Osmosis

Reverse Osmosis (RO) a fancy term to describe a process whereby water is forced, by pressure, through a fine-porous membrane that traps harmful contaminants. This is another water purification technology that was designed to address industrial requirements and then adapted for home use.

One result of using reverse osmosis systems in your home is that, like distillation, it strips out much needed trace amounts of calcium, magnesium and potassium. Water processed by reverse osmosis is, in fact, dead water. Minerals in water are Nature's way of protecting our health by preventing mineral deficiencies.

Reverse osmosis is a complex form of water purification technology that also results in a lot of upkeep. Case in point: you can expect to pay around $800 just to get a replacement filter.

Multi-Stage Filtration

The multi-stage filtration process combines the most efficient technologies available, including mechanical filtration, absorption and ion-exchange. This advanced water purification technology works first to reduce specific contaminants like sediment, chlorine, lead and other synthetic chemicals (e.g. herbicides and pesticides) while trapping chlorine resistant organisms and cysts like cryptosporidium and giardia.

Next, unlike other methods of water purification, multi-stage filtration works to enhance the natural mineral water balance of the water.

In-home multi-stage filtration systems come in the form of under and top-of-the-counter drinking water dispensers, shower filters and whole-house water filters. These systems are generally easy to install and maintain.

Multi-stage filtration results in affordable, healthy, great-tasting water at a cost of under 10 cents a gallon. Make no mistake about it.

The demand for clean drinking water isn't going to go away. With all the different methods of water purification available today, you need to know what kind of results you can expect from investing in water purification technology.

Source: Articlesbase

By Larry Price

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Water Treatment Systems

Water is a vital necessity for mankind—it is used for drinking, cooking, bathing, washing clothes and utensils, gardening, pets, cleaning, agriculture, and boilers and water heaters. Water is almost invariably contaminated with acidity, salts, metals, color, odor, taste, and other organic pollutants like insecticides and herbicides and bacteria and microbes. Hence, one must resort to purification before consumption.

Water softener systems & Water purification systems are ion-exchange resins that replace the calcium and magnesium salts present in hard water with sodium ions. The soft water thus obtained is good for bathing and for use in dishwashers and washing machines. Soda ash neutralizes the acidity of water and is widely used for the purpose. When the water is alkaline, one resorts to citric acid to neutralize the alkalinity.

Activated carbon filters are widely used for the treatment of water with strong smell of rotten eggs or garlic. Activated carbon filters work based on the principle of adsorption. Ultraviolet radiation has the power to kill the bacteria. UV filters use this effectively in the treatment of water. However, UV filters do not make the water soft or remove the odors.

The (RO) Reverse Osmosis systems uses semi-permeable membranes for the purification of water. They filter out almost all unwanted impurities like magnesium, calcium, iron, and smelly compounds and bacteria. This process gives only about 10% of the input water. The domestic RO units usually contain a five-stage purification process: a pre-filter, a sediment filter, a bactereostatic carbon filter to remove color and odor, an ultra filtration membrane to remove bacteria and viruses, and a polisher to ensure removal of bacteria completely.

One should test the input water and take appropriate measures for purification. Also, tests should be carried out at regular intervals to ensure the systems function as per specifications.

Source: Ezinearticles