12 Inch EPDM Membrane Fine Bubble Disc Diffuser Aerator In Black

Product Description

1. Aerator diaphragm: EPDM rubber (100% imported from Bayer company of Germany, Shanghai Sanpu sales company) shall be used. The surface of rubber diaphragm shall be smooth, flat, free of impurities, bubbles and cracks. The raw materials are mainly imported high-quality synthetic rubber with special ingredients, which are made by injection molding machine through scientific formula. It has the advantages of strong corrosion resistance, high strength and temperature resistance, and its service life can be more than 5-6 years. The materials meet the national urban construction industry standard CJ / t3015.4-1996.

2. The aerator base, screw gland, guide rib, air distribution pipe, connecting flange, elbow, blowdown device, fixed main pipe regulating bracket, etc. are all made of ABS engineering plastic; cast plastic molding has the characteristics of high strength, high pressure bearing, good impact resistance, use temperature of - 30 ~ + 100 ℃, UV radiation resistance, acid, alkali and chemical corrosion resistance.

Product Features

1. The air guide microporous aerator system is mainly composed of imported synthetic rubber aeration membrane (EPDM), base tray, screw gland and other components, all of which are made of engineering plastics. When assembling, just put the rubber diaphragm on the base tray, and put it into the aerator base with sealing line, and then tighten it with screw gland.

2. The air guide microporous aerator has 2960 opening and closing holes arranged according to certain rules on the synthetic rubber membrane. When flushing, the air passes through the air distribution pipe. The air evenly enters between the rubber diaphragms. Under the action of air pressure, the film is slightly puffed up, and the holes are opened (the microbubbles generated are ≤ 3mm) to achieve the purpose of air distribution and diffusion. When the air supply is stopped, due to the pressure drop between the film and the base tray, when the pressure disappears, due to the hydraulic pressure and the resilience of the film itself, the hole is gradually closed, and the film is compacted on the base tray. A small amount of dust in the air will not block the gap of the aerator.

3. As the base tray and screw gland of the air guide microporous aerator are mainly made of engineering plastics, they are not afraid of corrosion, which greatly reduces the workload of operation and maintenance.

4. Due to the high utilization rate of oxygen in the air guide microporous aerator, compared with other existing aerators, under the same operation load, the amount of aeration can be greatly reduced, and the air distribution in the full tank is uniform. Therefore, a uniform and gentle stirring state is formed. The biological flocs will not be broken due to excessive shearing, which is conducive to the clarification of the secondary sedimentation tank and sludge dewatering. At the same time, it can avoid freezing and inconvenient management caused by the large amount of aeration to form splashed foam spray.

During installation, the support tray (with G3 / 4 "internal thread airway in the center) shall be installed on the threaded joint at the top of the air distribution pipe. When the spherical crown microporous aerator works, the upper air distribution pipe enters the aeration diaphragm room through the supporting bracket airway.

Under the action of air pressure, the diaphragm is slightly bulged and the eyelet is opened, and micro bubbles with diameter less than 3mm can be produced in water. Stop the air supply, as the pressure between the diaphragm and the tray decreases gradually, as well as the resilience of the water pressure and the diaphragm itself, make the hole gradually closed, and compact the diaphragm on the support tray. Technical performance parameters: aeration size: 215 × 160mm; applicable working air volume: 0.8-0.3m3/h; service area: 0.35-0.6m3/h; oxygen utilization rate: 24-31%; oxygen charging capacity: 0.169-0.244kgo2/h; oxygen charging power efficiency: 6.5-6.8 kgo2 / h; resistance loss of aerator: ≤ 3200pa; arrangement, installation and commissioning of spherical aerator equipment can be supplied in complete set, accessories Including gas distribution pipe, pipe fitting, horizontal regulator, cleaning device, connector, etc.

The vertical layout dimension of the aerator is about 230mm from the surface to the bottom of the tank and 110mm from the air distribution center to the bottom of the tank. It can also be scheduled according to the user's requirements. The air distribution pipe should be connected into a ring network to ensure the uniformity of air distribution in the system. Each group shall be equipped with valves to facilitate the adjustment of air volume. The velocity of air duct is generally 10-15m / s for main pipe and 4-5m / s for branch pipe.

When installing the aeration pipe, first fix the regulator at the bottom of the tank with expansion bolts according to the required design size, then fix the air distribution pipe on the regulator with pipe hoop, and then install the aerator after blowing the air pipe.