Wastewater screening equipment plays a crucial role in removing solid materials from wastewater systems. These solids can harm waterways, damage equipment, and reduce overall system efficiency. Therefore, it 's crucial to remove them effectively.
In this blog, we will explore different types of wastewater screens available and provide tips on selecting the right one for your plant.
Wastewater screens are primarily categorized into fine and coarse screens, and further divided into subcategories such as rotary drum, static screens, sieve bend screens, and wedge wire screen tubes.
Fine screens are designed to capture small particles such as plastic, hair, and paper. They have self-cleaning mechanisms to prevent clogging and are commonly used in secondary treatment methods.
Coarse screens are used to remove large non-biodegradable solids like rags, wood, paper, and sanitary items. These screens are often employed at the initial stages of wastewater treatment, especially in settings where large debris is present.
Rotary drum screens serve as a pre-treatment method to separate solids from liquids, including debris, grit, algae, and sludge. Wastewater enters the drum, passes through a screen mesh, and the solids are captured while the water flows through. Internally-fed rotary drum screens are used for high flow rates, whereas externally-fed rotary drum screens are suitable for high oil or grease loadings and offer better overflow protection.
Static screens are typically installed in channels and tanks. They consist of a flat or curved panel with closely spaced openings that trap solids while allowing water to pass through. Over time, the trapped solids form a layer that filters finer particles. This layer is eventually removed manually or automatically using a spray bar, scraper, or conveyor.
Mechanical bar screens are essential for removing large particles such as rags and plastic. These screens feature vertically-mounted bars that capture large solids and have self-cleaning capabilities, making them ideal for primary pre-treatment.
Selecting the appropriate wastewater screen is critical for efficient filtration. Here are some key factors to consider:
Identify the contaminants present in the wastewater by identifying them. Common contaminants include fats, oils, grease, salt, surface-active agents, and corrosive matter. Understanding these contaminants will help prevent screen binding and clogging.
Flow Rate: Determine the flow rate of the wastewater. The screen should be selected based on the maximum flow rate to ensure optimal efficiency.
Byproduct Importance: Consider the importance of byproducts. Some industrial applications require the screening of specific particles for reuse, which can generate significant revenue. Select a screen that targets the desired particle size.
If you have further questions or need help selecting the right wastewater screen filter strainer, YUBO is here to assist you. Since 2008, YUBO has been a trusted manufacturer of wastewater wedge wire screening equipment. Based in China, we serve clients globally and are known for our innovative solutions.
View our full line of products here. For personalized assistance, contact us today to speak with one of our engineers.
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