Centrifugal settling tanks, mud settling tanks, gravity settling tanks
Suspension settling tanks are facilities or devices used to separate and precipitate easily settling suspended solids from wastewater. In their simplest terms, they operate by holding wastewater in slow-flow conditions, resulting in the gravitational separation of two phases: water and suspended particles.
The purpose of sizing clarifiers is to determine the required usable surface area, taking into account Stokes' law. The depth of the clarifier is irrelevant. Only the clarifier surface area relative to the flow rate is decisive.
Application of NavoTech settling tanks:
- separation of mineral suspensions from rainwater from roads, car parks, parking yards and technological sewage from car washes, mechanical workshops, repair shops, gas stations, from places where vehicle parts are stored, etc. Mineral suspensions such as sand, mud, ashes and parts of solid floating e.g. bags, polystyrene,
- when separating organic suspensions, sedimenting from industrial and technological sewage in places of their excessive formation, e.g. in restaurants, mass catering outlets, meat processing plants, food processing plants, etc.
Settling tanks in the NavoTech series include:
- PRIM – lamella settling tanks, multi-stream,
- OK-WIR – swirl settling tanks,
- OK – gravitational settling tanks.
The PRIM Lamella Settling Tank for Mineral Suspensions is a highly efficient multi-stream plate settling tank. The device features a sedimentation package installed at a specific angle. Plate settling ensures significantly greater efficiency in the suspension separation process. Plate decantation in the lamella settling tank continuously separates particles of varying sizes and masses, improving the settling rate, which means the device's capacity can be reduced, unlike static decantation, which requires an extremely large tank volume and a low settling rate.
Lamella sedimentation tanks for underground installation made of C35/45 class concrete or based on structural, double-walled PE-HD pipes with high ring stiffness from SN2 (as standard) to SN8 or.
PRIM lamella settling tanks for suspensions in the NavoTech offer:
- PRIM-B sedimentation tank with a vertical axis, for underground installation, made of concrete,
- PRIM-PE settling tank with a horizontal axis, for underground installation, made of polyethylene.
According to the project requirements, lamella settling tanks can be used for installation in traffic routes (roads, maneuvering areas 100 kN/axis) and are intended to be operated from ground level without the need to enter the interior of the device.
In the OK-WIR centrifugal sedimentation tank, sewage is supplied through a channel flowing tangentially into the chamber perimeter. The settling chamber is located in the central part in the form of a recessed funnel. During the flow of sewage, in addition to the swirl in the horizontal plane, secondary vortices are also formed in the vertical plane; the horizontal speed is different at different points depending on the distance from the center of the sand trap, which has a beneficial effect on the deposition of mineral suspensions.
Vortex settling tanks for underground installation made of C35/45 class concrete or based on structural, double-walled PE-HD pipes with high ring stiffness from SN2 (as standard) to SN8 or.
OK-WIR suspension centrifugal settlers in the NavoTech offer:
- OK-WIR-B centrifugal settling tank with a vertical axis, for underground installation, made of concrete,
- OK-WIR-PE centrifugal settling tank with a horizontal axis, for underground installation, made of polyethylene.
According to the project requirements, centrifugal settling tanks can be used for installation in traffic routes (roads, maneuvering areas 100 kN/axis) and are intended to be operated from ground level without the need to enter the interior of the device.
Gravity settling tanks are the primary devices used to separate easily settling suspensions from wastewater, with a density greater than 1 g/cm³. In general, settling tanks operate by holding wastewater in slow-flow conditions, which allows for the gravitational separation of two phases: water and suspended particles. Design considerations include detention time, tank surface area, and the grain size distribution curve of the incoming mineral suspension.
Gravity settling tanks for underground installation made of C35/45 class concrete or based on structural, double-walled PE-HD pipes with high ring stiffness from SN2 (as standard) to SN8 or.
OK gravity settling tanks for suspensions in the NavoTech offer:
- OK-B gravity settling tank with a vertical axis, for underground installation, made of concrete,
- OK-PZ gravity settling tank with a horizontal axis, for underground installation, made of polyethylene,
- OK-PN gravity settling tank with a vertical axis, for underground installation, made of polyethylene.
According to the project requirements, gravity settling tanks can be used for installation in communication routes (roads, maneuvering areas 100 kN/axis) and are intended to be operated from ground level without the need to enter the interior of the device.
INFORMATION MATERIALS
Navotech clarifiers are a key element in advanced wastewater treatment systems, providing highly efficient separation of easily settling suspended solids. Our product range includes three main clarifier types: PRIM, OK-WIR, and OK, each designed to meet specific process requirements and optimize treatment efficiency.
Application
- PRIM plate settling tanks: represent a modern solution in the form of multi-stream plate settlers. Their unique design guarantees significantly higher efficiency in the separation of suspensions such as mud, thanks to the use of specially designed plates that maximize the settling area.
- OK-WIR mud settling tanks: are distinguished by the presence of a sedimentation chamber located centrally, in the form of a recessed funnel part. This solution is particularly beneficial for the deposition of mineral suspensions and mud, where the vortex force supports the separation process.
- OK sewage settling tanks: are basic devices designed for the effective separation of easily settling suspensions from sewage. Their simple but effective design makes them indispensable in many standard wastewater treatment applications.
Advantages of settlers
Our settling tanks, including mud settling tanks, are characterized by exceptional durability and resistance to aggressive environmental conditions. Made of C35/45 class concrete or using structural, double-walled PE-HD pipes with high peripheral stiffness, they guarantee long-term use without the need to apply additional protective coatings or perform maintenance procedures. This design ensures not only resistance to corrosion, but also to mechanical damage.
Additionally, our settling tanks are designed for easy integration with existing infrastructure. They can be used for installation in communication routes, such as roads or maneuvering areas, withstanding loads up to 100 kN/axle. They are designed so that they can be operated from the ground, eliminating the need to enter the interior of the device, which increases safety and comfort of work.
Individual approach
At Navotech, we understand that each wastewater treatment project is unique, which is why we offer settling tanks, including mud settling tanks, in a variety of configurations and sizes. Thanks to this, we are able to adapt our solutions to the individual needs of each client, ensuring optimization of purification processes and maximizing operational efficiency. Our experience and commitment to providing high-quality solutions make us a trusted partner in the field of wastewater treatment.