The shallow sand filter is composed of one or more standard high speed sand cylinder units with unique internal water distribution and water collectors, and has a unique automatic flushing valve, which enables backwashing of multiple standard high speed sand cylinders individually during normal system operation, with fully automatic program control. It has the advantages of small backwashing water consumption, easy installation and easy operation; the equipment has a large flow rate and requires no maintenance; according to different user requirements, there are two series, vertical and horizontal, which are suitable for water quality treatment needs in many fields.
One of the standout features of the shallow sand filter is its automatic flushing valve. This unique feature allows for individual backwashing of the multiple standard high-speed sand cylinders during regular system operation, without interrupting the filtration process. This is all controlled by a fully automatic program, which ensures the smooth and uninterrupted operation of the system.
The shallow sand filter is highly efficient and eco-friendly, as it consumes minimal backwash water. Its design also allows for easy installation and operation, making it a practical choice for various applications. Despite its large flow rate, the equipment requires no maintenance, making it a cost-effective and time-saving solution for water filtration.
To cater to different user requirements, the shallow sand filter comes in two series - vertical and horizontal. This allows for greater flexibility in installation and application, making it suitable for water quality treatment needs in various fields.
Whether it's in industrial processes, municipal water treatment, or residential water filtration, the shallow sand filter provides a reliable and efficient solution to meet a wide range of water quality requirements. Its unique features, combined with its versatility and low maintenance needs, make it a standout choice in the realm of water filtration systems.
Product Features:
The shallow sand filter comes with a multitude of impressive features that enhance its functionality and versatility:
Size Flexibility: The filter units are available in a range of sizes from 24" (500mm) to 96" (2400mm), providing flexibility to suit different installation spaces and filtration needs.
Versatile Installation: The filter can be used as a standalone filtration system, using the existing process supply pump. Alternatively, if used as a bypass filter, it can be equipped with its own pump. Filters can also be installed in multiple treatment units on common pipework, allowing for unlimited filtration capacity of the system.
Backwashing Flexibility: The backwashing of the filter system can be carried out manually, semi-automatically, or fully automatically, and can be activated by a manual button, PLC, pressure differential, or management system respectively. The backwash cycle and time are adjustable, offering further customization.
High Filtration Speed: The filter operates at a high filtration speed with low pressure loss, effectively addressing the issue of slow filtration speed and small flow rate commonly encountered with mechanical media filters.
Modular Setting: The modular setting of the filter results in a small footprint and less piping, saving on investment. It reduces floor space by over 40% and piping work by over 50%.
Material: The shell and pipeline are made of carbon steel Q235B for durability, but can also be made of stainless steel for greater corrosion resistance.
Imported Core Components: The core components of the filter are imported from reputable manufacturers (such as BERMAD, BACCARA, SIEMENS, MITSUBISHI) to ensure high quality and performance.
Single Chamber Design: The filter unit is designed with a single chamber, which provides a better backwashing effect and a lower sand runoff rate.
Durable Water Collector: The water collector is available in stainless steel/ABS for longer life.
Convenient Outlet Pipe: The outlet pipe is set at the bottom of the unit, resulting in less water resistance and more convenient maintenance.
In summary, the shallow sand filter is a high-performance, customizable, and user-friendly filtration system suitable for a wide range of applications.
Working Principle:
Filtration Status:
The shallow sand filter operates as a cohesive unit, composed of numerous filtration units aligned side by side. During filtration, unfiltered water is evenly dispersed through an unique water distributor, designed by the company. This water then flows in a laminar fashion through the filler layer, which is made up of refined homogeneous quartz sand. As the water passes through this layer, impurities are effectively trapped within. Several evenly distributed water collectors are positioned at the bottom of the filter to uniformly collect and draw out the filtered water. This level flow filtration allows the filter to operate at high flow rates while still achieving excellent filtration results.
Backwashing Status:
Over time, impurities continue to accumulate in the packing layer, leading to an increase in the internal pressure head loss. Upon reaching a set value, the system will automatically activate the differential pressure device, transitioning it to the backwashing state. This process involves a hydraulic valve changing the water supply direction to facilitate one-by-one backwashing, effectively cleaning the accumulated impurities. Even during the backwash state, filtration continues. While the standard unit sand cylinder undergoing backwashing ceases to filter, the other sand cylinders in the system continue the filtration process. The clean filtered water is partly used to backwash the standard unit sand cylinders, with the remainder still being delivered to the customer. The backwash effluent is expelled through the backwash drain in the hydraulic valve.
In the high-efficiency filtration system for high-speed sand cylinders, a special collector design allows the fillers to scrub against each other, maximizing backwashing efficiency and minimizing the amount of backwash water required. Simultaneously, backwashing occurs without any material loss. A standard unit sand cylinder backwashes for 3 minutes, and once completed, the internal pressure head loss is reduced to a reasonable range. The pressure setting device then signals for a recovery, causing the hydraulic valve to return to the filtration state. The next standard unit sand cylinder then prepares to enter the backwashing state. The system can also be controlled by time backwashing, defaulting to backwashing once every 4 hours. This time can be adjusted according to the site's working conditions. Dual system control does not differentiate between primary and secondary, and operates based on which process is required first.
The shallow sand filter plays a crucial role in industrial systems for several reasons:
High-Quality Filtration: The shallow sand filter provides high-quality filtration, effectively removing a wide range of impurities from water. This is essential in many industrial processes where water purity can significantly impact the quality of the final product or the efficiency of the process.
High Filtration Speed: Thanks to its design, the shallow sand filter can process large volumes of water at high speeds. This is important in industrial settings where large amounts of water need to be treated in a short period of time.
Cost-Efficient: With its low maintenance requirements and automatic backwashing feature, the shallow sand filter helps reduce both operational and maintenance costs. Additionally, its efficient use of backwash water contributes to water conservation, which can be a significant cost saving in industries where water usage is high.
Versatility: The shallow sand filter can be used in a variety of industrial applications, thanks to its flexible design and the ability to operate effectively under different conditions. It can serve as a standalone system or be integrated into a larger water treatment setup.
Environmental Impact: By efficiently filtering water, the shallow sand filter helps industries minimize their environmental impact. The filtered water can often be reused within the industrial process, reducing the demand for fresh water and the amount of wastewater discharged to the environment.
Durability: Constructed from robust materials, the shallow sand filter is designed to withstand harsh industrial environments, ensuring long-term reliability and performance.
Scalability: The shallow sand filter can be scaled up to handle higher flow rates, making it suitable for both small and large industrial systems.
