Gravity Media Filters

With so many efforts nowadays in trying to have a sustainable environment, there are more stringent discharge limits than ever before which communities have to adhere to. Enhanced nutrient removal provides the greatest quality effluent by lowering phosphorus and nitrogen levels. To ensure that your area produces the highest quality effluent possible with enhanced nutrient removal solutions, it is imperative to know the steps to take with your wastewater technology. A good example is Gravity Media Filters.
Filtration is a process of separating a solid from a liquid. The liquid is separated from the solid by passing the mixture over a filtering media. The filtering media is chemically inert to the mixture, and having very small pathways for the liquid to pass through, but the pathways are smaller than the solid particle size. The filtering media can be made using fritted-glass, paper, or any porous material. Gravity media filter systems use granular particles in a basin.  A fluid streams pass through the basin and the particles are chemically and/or physically captured by media.
Gravity filters are normally used in areas where liquid-solids separation is needed in various applications for finished water treatment. The gravity filters can incorporate different types of media such as anthracite, sand and greensand to meet each application’s water treatment needs. Additionally, the gravity filters allow for very easy inspection during the process and usually have a smaller profile.
Gravity Media Filters are available in a variety of designs and configurations that can be customized to meet a variety of constraints such as footprint, water quality, flow requirements and backwash requirements. The filter designs can be either rectangular or round and can be either multi-cell or single. Additionally, systems can be developed for self-contained backwash storage and this eliminates the need for backwash pumps.
Gravity filters are normally developed using painted carbon steel; however, the systems can also be made from corrosion-resistant materials such as aluminum or stainless steel. Gravity filters helps in design flexibility and this helps in fitting into tight footprint requirements when required.
Gravity filter internals can be customized based on the customer’s preferences and applications. Various options are available for overdrain and underdrain design. The options allow for different types of air scour and backwash, like baffled overdrains for combined water and air backwash.
The mixture can be pushed through the filter by either reduced pressure on one side of the filter or gravity. You can separate a solid from a liquid by either technique, but there are advantages to each technique.
Gravity Filtration is recommended when:

  • the liquid is saturated with one or more reagents
  • the mixture is hot /above room temperature
  • the solvent is very volatile such as alcohols, chloroform, ethers.

The impurities commonly removed by Gravity Media Filters include; Iron & Manganese, Suspended Solids, Taste & Odor, Color and Organics (TOC’s & SOC’s)

Gravity media filters are custom designed and built for a wide variety of municipal and industrial applications. As its name suggests, gravity is used as the motive for the fluid stream to pass through a granular media through which chemical and/or physical removal of impurities is achieved. Gravity media filters are ideal for treating larger volumes of mixtures than pressure filters can economically achieve.


The Importance of Plasma Cutters in Cutting Thick Metal Plates

Plasma Cutter versus Oxygen-Acetylene Cutting Torch

Plasma cutters have replaced the traditional oxygen-acetylene cutting torch in most workshops because it is more cost-efficient to use and at the same time produces cleaner results. Before going any further, it is important to understand the scientific basis of this particular cutting technology. Do not be intimidated by the high-tech sounding name of the plasma cutting variant. The design of this relative new comer to the world of workshops is based on the principle that all matter takes on the four forms: liquid, solid, gas and plasma.

Everyone knows that when a solid is heated to its melting point, it goes through a phase change and becomes liquid. For example, a solid gold bar could be melted into its liquid form. However, when liquid is heated to a certain degree, the liquid phase changes to the gas phase. Many are not aware that there is a fourth phase. When gas is heated using extremely high temperatures, gaseous matter turns to plasma. In order to have an idea of how powerful this cutter could be, consider for instance that a lightning bolt is an example of plasma.

The Overall Results

Industrialists and machine shop operators prefer plasma cutting machines to the conventional type of cutters because of its overall performance in terms of speed, neatness, safety, and cleaner cuts. It is easier to understand why a plasma cutter is more efficient, safe, and produces cleaner cuts if one revisits the principle how gas is turned to plasma. In other words, the plasma flame reaches ultra-high temperatures so that it could cut through the metal without having to deal with the effect of residual heat.

This type of cutting tool is a worker’s reliable equipment when it comes to cutting thick metal. However, in order to ensure a cleaner cut, it is best to first drill a small one-eight inch hole to start the cut. Another major advantage of plasma cutting is the added capability it brings to the workshop because it performs better compared to the oxygen-acetylene variant when it comes to cutting nonferrous metal. Nonetheless, it must be made clear that a plasma cutting tool could be utilised in cutting all metals that conduct electricity.

What to Look For

In the past this type of equipment are as big as kitchen stoves but in the present time engineers were able to scale it down to portable size. Choose a plasma cutter depending on the project or the job requirement. An example of one of the simplest design is the small 110-volt model. However, there is also the heavy-duty 220-volt model that could cut through a three-quarter-inch steel plate like a knife to butter.

If a workshop or factory requires the cutting of relatively thin metal, then, the 110-volt model will suffice. However, heavier metals require the 220-volt model. In addition, technicians need to secure an air compressor, although there are brands that have built-in air compressors. Nonetheless, it is best to acquire an oil and water filter to keep the cutting air clean.


Air Compressor Purchasing Guide

A compressor is one of the most widely used equipment for residential and commercial projects. They are normally found in industrial factories as well as in households. Air compressors work by increasing the air pressure and sending it through a hose, a container or nipple. Over the years they equipment has evolved as one of the most reliable and are normally found in industrialized facilities as well as in garages all over the world. There are various kinds of compressors as well as different uses. Below are some factors to consider when looking for reliable equipment.

Factors to Consider in an Air Compressor

Consider how frequent you will use the equipment and how you will use it. What type of tools will you be using and how much power will you require to operate them. Some equipment like nail guns, do not require a high volume compressor. Other tools such as sanders or drills do require high volume since they require steady flow of air.
Set a budget for the purchase. The prices for the machines vary significantly from one brand to another. Buying used equipment is one way of making the budget stretch further.
The style of the equipment’s pump is another factor. The most common pumps are belt drive and direct drive. Direct drive pumps normally last up to 500 hours. They take up less room in the workshop and are well suited for moderate users. Another benefit of this type of equipment is that there is no oil changes required. However belt drive pumps normally require oil changes after every 500 hours and will last for about 1500 hours. This type is good for DIY tasks as well as professional use.
Consider the equipment’s power. Consider both your horsepower and the pound per square inch pressure (PSI). Ensure the machine is more powerful than the most powerful tool you are going to use. Check your tools before buying the equipment.
Another important consideration is the tank size. They come in different sizes from 200 to 100 gallons. The more you use the equipment, the bigger the tank you will require. Always go for a little larger tank size than you think you will need to ensure that you can get the maximum use from your compressor.

Finding an affordable air compressor

Shop around before deciding on the machine’s system. Read reviews on the internet and compare brands. Compare each and every machine and its features.
Consider online shopping. Often, compressor prices are considerably less in online stores. Many stores ship straight from the manufacturers, saving retail mark up. Such savings can be very significant. In many cases, buyers will not need to pay sales tax on the machine, which can add up. Many online stores offer free shipping on their sales, so it will not cost any extra cash for shipping.
The machine can be very useful additions for home improvement enthusiasts, but keep in mind that compressed air can be very dangerous if it is not used correctly. If you use it properly it will be a handy helper and a good friend in the jobs around the house.


What makes Pipe Cutting machines great

Pipe cutting machines simply refer to machines used to cut pipes. Most of the pipes cutting machines were discovered after the failure of hacksaws to efficiently cut some types of metals especially the strong ones .They came in as a substitute of the hacksaw, which had become inefficient. For this reason, they have continued to gain popularity among people in the fabricating, building and construction industries .There are several types available today in the market making the buyers spoilt for choice for the type they want depending on their personal needs. This article is therefore going to explore and give some insights to the various users on which brands they should look for in the market.

Pipe cutting machines features

Automation – the machines offers automatic operation that enables users to give automatic assignment of tool parameters to the already processed material. It has a control unit mounted with a touch screen where all control functions can be fed into the system.

Efficiency and quality – the machines provide a high quality cutting with high definition plasma. They are also efficient and user friendly since they have the – PC based CNC control system and provides remote diagnostics and assistance.

Multitasking – he machines can easily multitask because of its ability to perform multi tool operation

Offering safety – the mechanical parts of the machines are protected against fumes and damages. This also ensures that the machine operators are also safe during the cutting process.

The machines also provide the following additional accessories; plasma rotator, automatic calibration of tool geometry, micro punch and inkjet writer

Common Applications of the Pipe Cutter

Trimming – the machines are used for trimming pipes to ensure a smooth outcome.
Drilling of holes the machines are used for cutting of holes for multiple pipe and other profile intersections

Welding preparation – the machines have also been widely used for welding seam preparation and pipe marking

Benefits of pipe cutting machines


They have the overall performance efficiency that guarantees a consistent and reliable cut. They also give a level of precision cutting thus eliminating the risk of leaking pipes and possible drain failures.


They are generally faster than other tools that were previously used like hacksaws. They use cordless drill as power source and their inputs are controllable whereas other cutters rely on man-power, which slows down the process.

Accuracy and low maintenance

They are more accurate due to the high technology used. They are also designed with robust materials, which ensure low maintenance since no lubrication is required. They have also been prepared to work in different working environments.


They ensures the user is safe because they are always held at an arm’s length during operation


Pipe cutting machines have really revolutionised the fabrication industry through their numerous advantages and buyers in the market should consider purchasing them.


Data Recovery – The Solution for Media Failure

Data stored in computers may be lost due to mechanical problems such as a head crash where the read-write head of the computer disk collides with the recording surface, failure of the disk controller device, a power surge, or as a result of a defective air filter. Data loss may also be due to software-connected issues like file accidental erasure, corruption, virus problem or problems in the operating system.

The symptoms normally range from the clicking sound produced by an otherwise working hard drive or a hard drive which is simply not being recognised by the machine. The end results can be challenging to the end user regardless on whether that user is a person storing treasured family photos or a company without any backup of its server. In all these situations Data Recovery Solutions and backup services are absolutely necessary.

When any of such eventualities happen, data access will be denied to the user in the normal way through the computer. Many computer users think that when their data is lost it cannot be retrieved. In some cases data can be irretrievably lost but in most cases, data is not lost. On the other hand, with proper care and in the right hands, in most cases the data can be fully recovered. The only access to the data that is denied is through the normal path and the data can be retrieved through other means. This process is referred to as hard disk data recovery.

The first thing which you should always do in such situation is stop using the failed media since by doing so can cause more damage to the media and this can make the recovery more difficult. Many people try things like repartitioning or reformatting a hard drive in an attempt to use it. When you try to use the failed media, you will be destroying the existing data that you wish to recover.
The most critical action which you should take when this happens is to contact an experienced recovery company. These Data Recovery Solutions firms exist for a reason. They have specialised in data recovery, and many of them have many years of experience in data recovery from failed media. Many of such companies offer a very clean room service, which is vital if the media needs to be opened in order to replace parts.

Choosing Data Recovery Solutions professional should be done carefully. You should be aware of companies who charge lower fees compared to other companies. The recovery of data can be expensive due to the tools and labor involved in data recovery. In many situations, a hard drive may require total parts replacement in a dirt free room using highly specialised equipment.
Your Data Recovery Solutions will be more successful when you leave it in the hands of an experienced data recovery professional. Each case is very different and normally falls into the category of logical or physical recovery with physical data recovery being much more complex. However, just because your data appears lost does not mean that it is permanently gone.


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