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Introduction
The WF type combined flotation equipment is composed of a flotation tank, a dissolved air system, a dissolved air water return pipeline, a dissolved air water release device, a scraper and an electronic control system. High-efficiency dissolved air flotation for seawater aquaculture is a water treatment technology specifically used in the field of seawater aquaculture.
Working Principle
Special Dissolved Air Flotation Machine for Wastewater Treatment mainly plays a role in solid-liquid separation (at the same time, it can reduce COD, BOD, chromaticity, etc.). Coagulants and flocculants are added to the raw water. After an effective flocculation reaction time, the raw water enters the combined air flotation contact zone. In the contact zone, the microbubbles in the dissolved air water and the flocs in the raw water adhere to each other and enter the separation zone together. Under the buoyancy of the bubbles, the flocs and bubbles rise to the liquid surface together to form scum. The scum is hung to the sludge area by the scraper. The clean water in the lower layer flows to the clean water tank through the water collection pipe. Part of the clean water flows back for use in the dissolved air system, and the other part is discharged.
The refluxed clean water passes through the jet suction device, and under a certain working pressure, the air is dissolved into the water to the maximum extent, becoming dissolved air water. The dissolved air water is released in the contact area of the flotation tank through the rapid decompression of the release device to form microbubbles with a diameter of 5-10μm. The microbubbles can adhere to the flocs in the raw water. It dissolves air by pressurizing seawater, and then releases a large number of tiny bubbles under decompression. These bubbles contact and adhere to impurities such as suspended particles and organic matter in the seawater during the rising process, forming a gas floating body with a specific gravity less than water, which quickly floats to the water surface to achieve solid-liquid separation.
Technical Data
| Modle | Capacity | Dissolved air volume | Power KW | Dimension | DN (Nozzle list) | |||||||
| m³/h | m³/h | Reflux pump | Aerator | Skimmer | Blender | Pool diameter (m) | D/D1 | H/H1 | iniet (A) | Outlet (B) | Sludge outlet (C) | |
| WQF-2 | 15～20 | ～7 | 2.2 | 1.5 | 0.75 | 1.5 | Φ2 | 3.4/2.0 | 4.2/2.5 | 100 | 100 | 100 |
| WQF-3 | 30～40 | ～13 | 5.5 | 1.5 | 0.75 | 1.5 | Φ3 | 4.8/3.0 | 4.2/2.5 | 150 | 150 | 100 |
| WQF-4 | 50～80 | ～15 | 7.5 | 1.5 | 0.75 | 1.5 | Φ4 | 5.9/4.0 | 4.2/2.5 | 200 | 200 | 100 |
| WQF-5 | 80～100 | ～30 | 11 | 2.2 | 1.1 | 2.2 | Φ5 | 6.9/5.0 | 4.2/2.5 | 300 | 300 | 125 |
| WQF-6 | 100～150 | ～40 | 11 | 2.2 | 1.1 | 2.2 | Φ6 | 7.9/6.0 | 4.2/2.5 | 300 | 300 | 125 |
| WQF-7 | 150～180 | ～60 | 15 | 3 | 1.1 | 2.2 | Φ7 | 8.9/7.0 | 4.2/2.5 | 350 | 350 | 150 |
| WQF-8 | 200～250 | ～70 | 22 | 4 | 1.5 | 3 | Φ8 | 9.9/8.0 | 4.7/3.0 | 400 | 400 | 150 |
| WQF-9 | 250～300 | ～90 | 30 | 4 | 1.5 | 3 | Φ9 | 10.9/9.0 | 4.7/3.0 | 400 | 400 | 150 |
| WQF-10 | 300～400 | ～110 | 30 | 4 | 1.5 | 3 | Φ10 | 11.9/10.0 | 4.7/3.0 | 450 | 450 | 150 |
| WQF-11 | 400～500 | ～150 | 45 | 5.5 | 2.2 | 3 | Φ11 | 12.9/11.0 | 4.7/3.0 | 450 | 450 | 200 |
| WQF-12 | 500～625 | ～200 | 45 | 5.5 | 2.2 | 4 | Φ12 | 13.9/12.0 | 5.7/4.0 | 450 | 450 | 200 |
| WQF-13 | 625～750 | ～240 | 55 | 5.5 | 2.2 | 4 | Φ13 | 14.9/13.0 | 5.7/4.0 | 500 | 500 | 200 |
| WQF-14 | 800～950 | ～280 | 55 | 5.5 | 2.2 | 4 | Φ14 | 15.9/14.0 | 5.7/4.0 | 500 | 500 | 200 |
| WQF-15 | 1000～1150 | ～300 | 55 | 5.5 | 2.2 | 4 | Φ15 | 16.9/15.0 | 5.7/4.0 | 600 | 600 | 200 |
| WQF-16 | 1250～1400 | ～300 | 55 | 5.5 | 2.2 | 4 | Φ16 | 17.9/16.0 | 5.7/4.0 | 700 | 700 | 200 |
| WQF-18 | 1500～1800 | ～480 | 75 | 7.5 | 3 | 4 | Φ18 | 19.9/18.0 | 5.7/4.0 | 700 | 700 | 250 |
Product advantages
Efficiently remove impurities: Dissolved Air Flotation Systems (DAF) have a very good effect on removing residual bait, feces, algae and other suspended matter in seawater, and can significantly improve the quality of aquaculture water.
Reduce the frequency of water changes: By purifying seawater, you can reduce the frequency of water changes in marine aquaculture, save water resources, and reduce the stress response of cultured organisms caused by water changes.
Improve breeding efficiency: Good water quality contributes to the healthy growth of cultured organisms, reduces the incidence of diseases, and increases breeding output and quality.
Energy saving and environmental protection: Compared with traditional water treatment methods, high-efficiency dissolved air flotation technology consumes less energy and is environmentally friendly.
Applications
High-efficiency dissolved air flotation technology for marine aquaculture provides an efficient and environmentally friendly water treatment solution for marine aquaculture, which is of great significance for promoting the sustainable development of marine aquaculture.
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