Coarse Bubble Tube Diffuser
Coarse Bubble Tube Diffuser Large bubble air diffusers offer cost-effective mixing and long-term aeration.
These aeration diffusers are more suitable for conditions that require a combination of air flow and oxygen supply, especially in wastewater with solids content..
Advantages of using a Coarse bubble tube diffuser :
They are less prone to clogging due to the amount of air coming from the larger hole openings.
Optimal mixing capacity in reservoirs with mass and sediments
The ideal solution for the secondary purification phase (if fine bubble diffusers are used in this secondary phase, flakes, sediments and carbonates will form and clog the fine holes).)
Disadvantages of using a Coarse bubble tube diffuser :
Consume more energy to work
Less efficiency for oxygen transfer
Shorter contact time because larger bubbles rise faster through the sewer than smaller bubbles.
Coarse bubble diffuser
Coarse bubble diffuser : The wastewater treatment process always requires knowledge and expertise. In other words, the use of diffusers in the wastewater treatment process makes this process better. One of the most important and practical components in the wastewater treatment system are diffusers, in other words, diffusers create an important function by producing the necessary oxygen in the water treatment process. In general, aeration diffusers are classified according to the type of bubble they produce in the water and wastewater treatment process: fine bubble aerator diffuser and Coarse bubble diffuser .
In general, it can be said that the main application of aeration diffusers in the wastewater treatment process is in the stage of biodegradation of activated sludge, which is done in two stages of primary and secondary treatment. It is suitable to use both Coarse and fine bubble aerator diffusers. However, it is better to use a Coarse bubble diffuser for secondary purification , because it is a more suitable option and, conversely, in the primary purification, a fine bubble type is preferred.
Types of Coarse bubble aerator diffusers
Coarse bubble aerator diffuser has two types of disc diffusers and tubular diffusers and each of them has a special feature and advantage and are selected and used according to the needs and goals of the industry.
Disk diffuser
This type of Coarse bubble diffuser has a plate and a large number of Coarse holes and its appearance is in the form of a disk and usually has a cap with membranes. The advantage of using a disk aeration diffuser is that it can be mounted on stainless steel pipes.PVC Or HDPE Installed, the material used to make it from PP Or polypropylene with GPR 30% It is combined and therefore has good radiation resistance UV And it has chemical pollutants, has good oxygen transfer and is usually between 20 and 25 percent, and its energy consumption is very low due to low pressure drop.
Tubular diffuser
This type of Coarse bubble diffuser is designed to have the shape of a tube or tube and that is why it is named. There are holes on it that are Coarse and are the outlet for the bubbles produced. The holes in it may always be open or open and close due to air flow.
Advantages of a Coarse bubble aerator diffuser
In diffuser systems, the alpha factor indicates its resistance to clogging and settling of bacteria and microorganisms, and since they have Coarse holes, they do not clog and have a higher alpha factor than the fine bubble diffuser. Due to the lower probability of clogging, back pressure on the blowers and breakage and rupture will not occur. Another advantage of the diffuser is the Coarse bubble .
Because the bubbles produced are large in size, they can combine larger volumes of liquids, in other words, they have a very high mixing power, which means that the solids in the effluent do not precipitate and the process of biological decomposition of sludge And combine it with oxygen, better and more efficiently.
Large bubbles The Coarse bubble diffuser is an effective factor in preventing sedimentation and clogging of the holes and significantly reduces the need for cleaning and continuous repairs, and this feature saves more time and money.
Usually made of PPEither polypropylene or stainless steel are made and the amount of clogging is very low. Because of this, they last for many years. Durability and high strength lead to lower costs and the purchase of new equipment and is more cost-effective. Of course, the necessary cleaning and repairs need to be done at specific times. These are just some of the benefits of using a Coarse aerated bubble diffuser .
Fine Bubble Diffuser
One of the most important and practical devices in the field of water and wastewater treatment are diffusers Which have different types and each has a specific application. In general, diffusers due to ventilation They have a great impact on industrial and sanitary wastewater treatment. Because bacteria in sewage need oxygen to break down sewage pollution And this oxygen is supplied by aeration diffusers.
The fine bubble disk diffuser is one of the most widely used diffusers. Disc diffusers according to their aeration To two types of micro-aerated bubble disk diffusers and coarde bubble disk diffusers Aerators are divided, each with its own application.
The role of aeration in wastewater treatment
The process of water and wastewater treatment involves several stages In other words in wastewater treatment one of the most important units that plays an important role It plays in the purification is an aeration unit.
Fine Bubble Tube Diffuser
Made by Faraz Tasfieh Engineering Company, it has excellent performance for transferring oxygen to aeration ponds in wastewater treatment systems and fish ponds. .
The diffusers of this model consist of a thin, narrow plastic cylinder supported by a rubber membrane. EPDM it is surrounded.
Tubular diffuser
Cylindrical body material of these widely used PVC diffusers (PVC) It has high pressure and excellent resistance to most chemicals and human and industrial wastewater .
The tire expands with compressed airflow to open tiny holes and release Fine-diameter bubbles into the sewer..
The tires used in it are made of EPDM ( And for temperatures higher than silicon) and have very Fine or medium holes, depending on the use.
This type of diffuser tends to have a higher surface area than disc diffusers and produce more bubbles..
Tubular diffuser
They require lower initial costs than disk diffusers because they are easier to install, although they are not cheap for long-term maintenance..
Application of fine bubble tube diffuser :
Aeration ponds in the activated sludge process with deep aeration
Sludge storage ponds
Wastewater treatment system SBR
Wastewater treatment system MBR
Fish breeding tanks
Ecological tube diffuser or tube has the highest quality of membranes and also due to having a one-way valve, it is not possible for air to return into the pipeline . .
Tube Diffuser
Tube Diffuser manufactured by Faraz Tasfieh Engineering Company has excellent performance for transferring oxygen to aeration ponds in sewage treatment systems and fish ponds. .
PVC cylindrical body material (PVC) It has high pressure and excellent resistance to most chemicals and human and industrial wastewater .
Tube diffusers from a tube made of polypropylene and a membrane made of EPDM Or are made of silicone.
This type of diffuser is used in tanks that have a small width and the air required for aeration is high..
Tube diffusers are made in three standard sizes, and other sizes can be customized if needed. .
It has excellent resistance to most chemicals and human and industrial wastewater.
The special arrangement of the holes increases the efficiency and useful life as well as reduces the pressure drop.
Tubular diffuser is produced in fine and corse bubble models.
This type of diffuser installed on steel and plastic pipes is.
The tires used in it are made of EPDM ( And for temperatures higher than silicon) and have very small or medium holes, depending on the use.
Application of tubular diffuser :
Aeration ponds in the activated sludge process with deep aeration
Sludge storage ponds
Wastewater treatment system SBR
Wastewater treatment system MBR
Fish breeding tanks
Aeration Diffuser
Types of aeration diffusers used for wastewater aeration in wastewater treatment plants are divided into two general categories: porous diffusers and non-porous diffusers. The most common types of porous diffusers include plate, dome, disc and tube diffusers.
Aeration Diffuser
Plate diffusers are mounted on concrete or aluminum bases, and each base can hold 6 plates or more. Each group of bases is connected to the air pipe at appropriate intervals along the tank And is controlled by a valve. This diffuser is a plate aerator.
Types of diffusers in terms of production bubbles
Small bubble aerator diffuser due to its small size and also more bubbles produced They have a higher contact surface with wastewater and have the ability to transfer more oxygen to the organic matter of wastewater. The large bubble diffuser creates a uniform flow in the wastewater.
In the aeration section to the sewage according to the design parameters as well as the quality of the incoming sewage And the amount of air required for the type of aeration blower is selected.
Coarse Bubble Disk Diffuser
Disc diffusers in water and wastewater treatment and fish ponds are produced in two types of Coarse-bubble and fine-bubble diffusers..
Diffuser
LCoarse bubble disc diffuser is used for effective mixing in balancing pools. Although aeration is done in this way in the liquid, but for more effective aeration is recommended in aeration ponds and fish farming tanks of various bubble diffusers. OXYaeroTM ( Disk diffuser - Tube diffuser) to be used .
Disk diffuser
A diffuser with a bubble size between 3 and 50 mm is generally called a Coarse bubble diffuser. Coarse bubble diffusers are mostly used in cases where turbulence and turbulence are required, such as balancing tanks and.. These diffusers can also be used for mixing and stirring to prevent sedimentation and homogenization of the solution..
Coarse bubble diffusers are often made of polypropylene and PVC in the form of simple plates and valves or fungi..
Coarse bubble diffusers have a lower transfer coefficient than fine bubble diffusers.
In deep aeration methods, in order to properly transfer and inject compressed air into water or sewage, the use of aeration nozzles or diffusers is recommended due to the production of very fine bubbles. .
The smaller the air bubbles, the higher the efficiency of oxygen transfer to the water due to the increased contact surface. The nozzles are available in fine and Coarse bubbles depending on the type of application and the size of the holes. .
But for using liquids with high adhesion, Coarse bubble diffuser is suitable .
Disk diffuser
In many cases, due to the need for more mixing and turbulence, especially in wastewater balancing ponds, the use of Coarse bubble diffusers.( coars bubble)Are preferred.
These diffusers have the ability to mix more strongly to direct and suspend sediments and concentrated sludge..
This model of large bubble aerator diffuser is very suitable for mixing oxygen and is also effective for treating wastewater with a high volume of solid particles..
Disc diffusers are produced in different sizes.
Disk diffuser
Each diffuser has a specific aeration capacity depending on the production size.
These diffusers inject the air produced by the aeration blower. Ecological diffusers( ecologix )It has the highest quality of membranes and also due to having a one-way valve, it is not possible to return air into the pipeline..
The 12-inch ecological diffuser is a fine bubble and has an oxygen transfer coefficient with a pad for deep aeration pools..
Also diffuser model of ecological Coarse bubble that snap cap It is called for balancing and sludge digestion tanks.
Disk diffuser
One type of diffuser is a disk diffuser that is widely used in water and wastewater treatment. Disc or so-called plate diffusers in wastewater treatment systems, Fish ponds, etc. are used, Disc diffusers in two types of diffusers Large bubbles and small bubble diffusers are produced, Large bubble diffusers have a lower transfer coefficient than fine bubble diffusers. But in general it can be said to be one of the most widely used diffusers For water and wastewater aeration in deep aeration method, They are small bubble diffusers that have a higher oxygen transfer coefficient To large bubble diffusers. Each diffuser has a certain aeration capacity according to the production size.
In aerobic processes, one of the most important elements is the selection of air diffusers. In the deep aeration method, in order to transfer and properly inject air into water or sewage, use Diffusers are recommended because of the production of tiny bubbles. The smaller the air bubbles, The efficiency of oxygen transfer to water will be higher due to the increase of contact surface.
Advantages of diffusers
Easy installation method
Slight pressure drop
High corrosion resistance
Due to the formation of tiny bubbles, the rate of transmission and absorption of oxygen is very high.
Minimal energy consumption
No clogging problem
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