Water Treatment

centrifugal and axial fans for water treatment plant

Water treatment is a process involving the removal of contaminants from sewage, wastewater, and discharged water. Various methods eliminate physical, chemical and biological pollutants. Nevertheless, these processes are not straightforward; they are some of the most demanding applications for the equipment involved. Hence, water treatment facilities around the world rely on industriAL fans. One of the leading blower manufacturers in India, AS Engineers, manufactures a variety of centrifugal and axial fans and blowers with unique materials and coatings like fibreglass, stainless steel, and carbon fibre to help endure these corrosive environments.

Aeration

Aeration is where moving air is carried through a solid or a medium fluid bed, which is used for many purposes. Our fans are utilized for moisture control in applications like grain bin storage and also provide oxygen and control moisture/temperature in composting applications. This largely depends on the specific material that is being aerated. Additionally, due to dynamic environmental conditions, fans in aeration systems need particular construction, like alloys, fibreglass, and special coatings.

Air Stripper

Air strippers are included in drum filters to remove material buildup on the filter. The filter has vacuum nozzles, which helps remove the fibre/particulate. They are then disposed of or used for reclaiming the material. The fans designed for this application require higher pressure at a relatively low airflow. They need to have a radial blade design for handling the material. Considering these factors, AS Engineers includes radial blades with a back plate, preventing long stringy material from collecting around the shaft.

Odour Control

One of the significant challenges in wastewater and sewage treatment plants is controlling the odour that runs amok. Wastewater plants are generally located in residential areas and must follow stringent codes and regulations. Hydrogen sulfide and ammonia are responsible for creating these pungent odours. Thermal oxidation, biofilters, and chemical scrubbers are practical ways to reduce odour emissions. These industrial fans also require special alloys, fibreglass construction, or coatings.

Centrifugal Blower 

Blowers play a crucial role in the water treatment industry by providing the necessary air and gas flow for various processes. Some specific applications of blowers in the water treatment industry include:

  • Sludge Dewatering: Blowers are often used to dry out and dewater sludge, a byproduct of the wastewater treatment process. The blowers help to remove excess moisture from the sludge, making it easier to transport and dispose of.
  • Sewage Treatment: Blowers are used in sewage treatment plants to oxygenate the wastewater, which helps to break down organic matter and facilitate the removal of contaminants.
  • Aeration: Blowers add oxygen to the water to facilitate the growth of beneficial bacteria and other microorganisms. This is often done to improve the water’s quality and make it suitable for reuse.
  • Air Stripping: Blowers remove contaminants from water by passing it through a bed of material that absorbs the impurities. The blowers help to move the air through the bed, allowing the contaminants to be stripped out of the water.
  • Odour Control: Blowers help remove odorous gases from the air in wastewater treatment plants, helping to reduce odours and improve air quality.
  • Sludge Drying: Blowers are used to dry out sludge to reduce its volume and make it easier to transport and dispose of.
  • Water Filtration: Blowers help filter water to remove contaminants and improve its quality. This is often done by passing the water through a bed of material that absorbs the pollutants, with the blowers helping to move the water through the mattress.
  • Sludge Dewatering: Blowers are used in sludge dewatering, which involves separating water from the solid matter in sewage sludge. The sludge is typically dewatered using a centrifuge, filter press, or belt filter, and blowers provide the necessary airflow and pressure to operate these systems effectively.
  • Biological Treatment: Blowers are also used in natural treatment, which involves using microorganisms to break down organic matter in sewage and wastewater. The organisms require oxygen to survive, and blowers are used to provide the necessary airflow to support their growth.
  • Membrane Aeration: Membrane aeration is a process in which air is injected into the water through a membrane to provide the necessary oxygen for biological treatment. Blowers provide the airflow needed to operate the membrane aeration system.
  • Sludge Conveying: Blowers convey sludge from one part of a water treatment plant to another, helping to improve efficiency and reduce the risk of accidents.
  • Air Scouring: Blowers are used in the air scouring process, which involves using high-velocity air to remove fouling and biofilm from water treatment membranes. This helps to improve the efficiency of the membranes and extend their lifespan.

These are just a few examples of the many applications of blowers in the water treatment industry. Whether you need to dewater sludge, provide oxygen for biological treatment, operate a membrane aeration system, convey sludge, or scour membranes, a blower solution can likely meet your needs.

It is essential to carefully select the suitable blower for each application in the water treatment industry, considering factors such as flow rate, pressure, and the corrosive nature of the environment. At AS Engineers, we offer a range of blowers with unique materials and coatings, such as fibreglass, stainless steel, and carbon fibre, to help withstand corrosive environments.

Paddle Dryer

Paddle dryers are industrial dryers commonly used in water treatment for drying sludge and other wet materials. These dryers are particularly effective for drying sludge because they use a series of rotating paddles to agitate the fabric, exposing it to hot air and allowing it to dry quickly and efficiently.

Paddle dryers are often used in water treatment plants to process sludge generated during treatment. Sludge is a semi-solid or liquid byproduct of the treatment process that contains contaminants and other unwanted materials. Drying this sludge can be more easily transported and disposed of or used as a fertilizer or fuel source.

Paddle dryers are also used in water treatment plants for other purposes, such as drying chemicals, flocculants, and other wet materials. These highly efficient dryers can be used in various water treatment applications, making them a piece of essential equipment in this industry.

Overall, paddle dryers are a valuable and versatile tool in the water treatment industry, helping to dry sludge and other wet materials efficiently and effectively. If you need a paddle dryer for your water treatment business, we encourage you to contact us to see how we can help.

Paddle dryers are industrial dryers commonly used in water treatment to dry sludges and other wet materials. These dryers use rotating paddles to agitate and expose the damp cloth to hot air, causing it to dry quickly and efficiently.

Some of the critical applications of paddle dryers in the water treatment industry include the following:

  • Drying Sludges: Paddle dryers are often used to dry sludges and other wet materials generated by wastewater treatment processes. These dryers can handle various sludge types, including primary, secondary, and digested. They can reduce the moisture content of the sludge to as low as 10%.
  • Drying dewatered cake: Paddle dryers can also be used to dry dewatered cake, a semi-solid material that removes moisture from sludges using mechanical or chemical processes. These dryers can reduce the moisture content of the cake too as low as 5%, making it easier to handle and transport.
  • Drying filter cakes: Paddle dryers can also be used to dry filter cakes, which are produced when wastewater is filtered through a series of screens or filters. These dryers can help reduce the filter cake’s moisture content, making it easier to handle and transport.
  • Drying other wet materials: In addition to sludges and filter cakes, paddle dryers can also be used to dry other wet materials that are generated in the water treatment industry, including wet grit, wet screenings, and wet sand.
  • Sludge Drying: Paddle dryers are commonly used in water treatment plants to dry and dewater sludge, a byproduct of the wastewater treatment process. Sludge contains a high moisture concentration and can be challenging to handle and dispose of, making drying an essential step in the overall treatment process. Paddle dryers work by agitating and exposing the sludge to hot air, causing the moisture to evaporate and the sludge to dry. The dried sludge can be disposed of more easily or used as fertilizer or soil conditioner.
  • Sludge Dewatering: In addition to drying, paddle dryers can also be used to dewater sludge by removing excess moisture and reducing the volume of the material. This is often done through a sludge screw or belt filter press, which applies pressure to the sludge to extract moisture. Paddle dryers can be used with these dewatering processes to reduce the moisture sludge’s moisture content and improve the dewatering process’s overall efficiency.
  • Heat Recovery: Paddle dryers can also recover heat from the drying process, which can generate electricity or heat buildings or other facilities. This can help to reduce energy costs and improve the overall sustainability of the water treatment process.
  • Other applications: Paddle dryers can also be used in water treatment plants for a variety of different applications, such as drying chemicals or other materials used in the treatment process, drying and dewatering biosolids, and drying and dewatering sludge from food and beverage processing plants.

Paddle dryers are a versatile and effective solution for drying wet materials in the water treatment industry. If you need a paddle dryer for your water treatment business, we encourage you to contact us to see how we can help.


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