Long-handled filter head

Biological Aerated Filter (BAF) long-handled filter head is an important component of water distribution and backwash.

Product Specifications:By customer requirement

Product Packing:By customer requirement

Product Description:

    Filtering is an important part in the water treatment process. In BAF process ,when the filter in run time, the sewage under the pump pressure from the filter rod mouth upstream to the filter cap ,and into the reaction cell after running for a period ,with the increasing interception amount of the filter layer, the head loss increases, resulting in filtration rate decreased. Filter the water level continued to rise, after filtering the water turbidity increased, to make the filter to resume normal operation, to ensure water quality and quantity, must be backwashed, The process is: the high-pressure air in the filter plate to form a cushion layer, cushion layer thickening to the strip hole at the bottom of the filter rod , a large number of high-pressure air through the filter cap escape ,erosion and shear on the filter, compaction of the filter is to break up stains objects recoil to the upper part of the filter layer, followed by a joint air-water backwash, the filter layer is in friction erosion by the air-water, resulting in micro-expansion, pollutants and aging biofilm further wash the filter layer ,and then separate backwash, pollutants recoiled into the sump to drain away The end of the backwash process, the rapid recovery of biological activity, updated treatment effect, stable and good.

    Filter design has been commonly used to filter head of the small resistance of the water distribution system, the filter plate air-water backwash process, the filter head, filter plates, the water distribution system has a simple structure, reliable technology, the head loss is small, low energy consumption, no dead zone, not easy to block , construction management is convenience and a number of advantages.

    Biological Aerated Filter (BAF) long-handled filter head is an important component of water distribution and backwash. Filter head material is ABS engineering plastics, manufactured by the composition of the filter rods, filter caps, embedded casing, high bearing strength ,strengthen the thread structure of the filter head, a solid connection, and never fall off. Filter head cap base design enhance the bottom seam, so that no dead zone and plot the mud between the filter plate

Product Feature:

1,The filter head grille can effectively prevent the filter rod internal from the dirt clogging, even if clogging occurs remove the cap for cleaning, avoid the filter head stuck phenomenon occurs due to the pollutants. Filter rod axially inner diameter of 17mm, the water flow from the filter rod to the filter cap , form inside to outside , filter cap grille gap2-2.5mm;

2,The filter head is mounted vertically 50mm fine-tuning, ensure consistent with the level of the filter of the entire filter, must be filled with water and do the correction levels after installation of the filter head. In the actual installation, to make the beams pouring and filter plate plane is extremely difficult to meet the level of technology. The vertical height of the filter head can fine-tune ,it's difficult to make filter head horizontal plane in the process, especially overall filter plate filter must be with adjustable filter head

3,Filter head with the sink design at the bottom of filter cap, flushing plot mud, to ensure that no dead zone between the filter head and filter plate.

Technical Index:

    1 By the filter rod with a green cap, embedded casing and the prevention of filter caps, embedded casing embedded in the concrete filter plate, and with the internal thread, plate thickness 100mm.

    2 Filter head, filter tube and embedded casing performance are in line with the drinking water than with water equipment and protective materials in the security evaluation criteria "provisions of GB / T 17219.

    3 Good bearing strength of the filter head, securely connected and installed to ensure that the filter no head off.

    4 Filter head and filter plate should be no dead zones, do not block mud

    5 Standard quality inspection : filter head gap no defects, no fly edges and burrs and other defects; the filter head is a smooth surface, no significant impurities. no cracking, blistering, the same color and luster; no deflection phenomenon, no shrinkage, no lack of material phenomena; in accordance with the standard specification, is not greater than±0.1mm.

    6 Simply using the gas backwash the filter head, head loss and aerated waters and backwash head loss should meet the design requirements

    7 Installation density of 36-49 a / m2 ; air impact strength :10-20L / m2.S; flush strength 5-6L/ m2.S.

    8 Simply using the gas backwash the filter head, the head loss is not greater than the value of the following table.

Flow Rate(m/s) 23 27 31 35 39 43

Water Head Loss 0.041 0.055 0.074 0.098 0.138 0.161

Main Usage:

1,The tap water supply filter;

2,Biological Aerated Filter (BAF).

Long-handled filter head