Ceramsite filter material is widely used in biological aerated filter (BAF) because of its good interception performance, large porosity, large specific surface area, easy backwashing and low damage rate. How should ceramsite filter material be installed? Keyuan environmental protection for you to introduce the installation method.

A, ceramsite filter material installation preparation

(1) After the installation of the water distribution system and aeration system of the filter tank, remove all impurities in the filter tank, dredge the water distribution, air holes and water distribution gaps, and then check whether the water distribution and air distribution system meet the design requirements through the backwashing method, and then install the supporting layer according to the design requirements.

(2) draw the horizontal height of the filter material layer installed on the inner wall of the pool, as the laying height mark.

(3) carefully check the different particle size of the filter material, and according to its particle size from large to small for cleaning, in order to spread.

Two, ceramic filter material pavement method

(1) when laying the bottom filter material, attention should be paid to avoid damage to the water distribution and aeration system of the filter. When spreading, first add water to the top of the drainage tank, and then evenly spread the filter material into the water under the action of gravity, naturally formed paving grading (pay attention not to the packing bag, certificate and other debris mixed with the filter material in the filling process), and then drainage, so that the water level down to the top surface of the filter material layer, evenly spread with a shovel. Paving personnel should not walk directly on the filter material for a long time, especially when filling the lower layer, should stand on the wooden crane operation, after the completion of the next layer of pavement, to pave on a layer of filter material.

(2) the thickness of each layer of filter material should be prepared to be uniform, scrape the surface with a spade or scraper, so that the top surface is close to the level, and its height should be consistent with the road height mark level.

(3) then rinse the filter material with water, rinse two or three times, microbial culture and hanging membrane can be carried out.

Are you clear about the installation method of ceramsite filter material in biological aerated filter?