The structure of DAF Clarifier
Jan 30,2024
A DAF (dissolved air flotation) clarifier is a water treatment device used to separate suspended solids, oil and other contaminants from water. It works by flotation, which introduces tiny air bubbles into the water to attach to the particles, causing them to rise to the surface for removal.
The structure of a DAF clarifier usually consists of several components:
1. Water inlet: The water to be treated enters the clarifier through the water inlet. It may contain suspended solids, oil, or other contaminants that need to be removed.
2. Mixing chamber: Incoming water is mixed with coagulant or flocculant, which helps to agglomerate fine particles into larger flocculants. This mixing process increases particle removal efficiency.
3. Flocculation zone: Water then flows into the flocculation zone, using gentle mixing or low-energy paddles to promote the formation of larger flocs. This step further enhances the agglomeration of particles, making them easier to remove.
4. Clarification area: The flocculated water enters the clarification area, which is the main area where the flotation process occurs. Here, fine bubbles are introduced into the water using a dissolved air system. These bubbles attach to the flocs, causing them to float to the surface.
5. Skimming Mechanism: As flocs rise to the surface, a skimming mechanism collects them and removes them from the clarifier. This can be accomplished by rotating a skimmer arm or a series of skimmer blades to scrape floating material into a collection tank.
6. Water Outlet: Clarified water without removed contaminants leaves the clarifier through the water outlet. It is usually located at the other end of the entrance.
7. Sludge discharge: The collected sludge or floating matter is usually discharged from the clarifier through the sludge outlet. This sludge may undergo further treatment or a dewatering process before disposal.
DAF clarifiers are constructed to facilitate the separation of suspended solids and other contaminants in water, providing cleaner wastewater for a variety of industrial, municipal, or wastewater treatment applications.
The structure of a DAF clarifier usually consists of several components:
1. Water inlet: The water to be treated enters the clarifier through the water inlet. It may contain suspended solids, oil, or other contaminants that need to be removed.
2. Mixing chamber: Incoming water is mixed with coagulant or flocculant, which helps to agglomerate fine particles into larger flocculants. This mixing process increases particle removal efficiency.
3. Flocculation zone: Water then flows into the flocculation zone, using gentle mixing or low-energy paddles to promote the formation of larger flocs. This step further enhances the agglomeration of particles, making them easier to remove.
4. Clarification area: The flocculated water enters the clarification area, which is the main area where the flotation process occurs. Here, fine bubbles are introduced into the water using a dissolved air system. These bubbles attach to the flocs, causing them to float to the surface.
5. Skimming Mechanism: As flocs rise to the surface, a skimming mechanism collects them and removes them from the clarifier. This can be accomplished by rotating a skimmer arm or a series of skimmer blades to scrape floating material into a collection tank.
6. Water Outlet: Clarified water without removed contaminants leaves the clarifier through the water outlet. It is usually located at the other end of the entrance.
7. Sludge discharge: The collected sludge or floating matter is usually discharged from the clarifier through the sludge outlet. This sludge may undergo further treatment or a dewatering process before disposal.
DAF clarifiers are constructed to facilitate the separation of suspended solids and other contaminants in water, providing cleaner wastewater for a variety of industrial, municipal, or wastewater treatment applications.
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