Irregular Sand Filters
The treatment mixed up in case of intermittent Stahlwandpool applies the waste, that has already undergone initial treatment, onto the filtration beds of wastewater fine sand filter at regular times. By this, air can the particular interstices of the bed involving the dose of sewage to produce the required aerobic bacteria.
Design
The wastewater sand filtering consists of a layer of clean, sharpened sand, with an effective sizing 0. 2 – zero. 5 mm and of standard coefficient 2 – a few, 75 to 105 cms deep having under écoulement, surrounded by gravel to carry off of the effluent. The sewage will be applied by means of a dosing fish tank and siphon; it then runs into troughs laid around the filter bed. The troughs on the wastewater sand filtration have side openings, which usually allow the sewage to stream on the sand. To prevent virtually any displacement of sand obstructs may also be used underneath the sewage avenues. After an interval regarding 24 hours, sewage is now utilized over a second bed even though the first bed rests. Typically, three to four water treatment yellow sand filters may thus be taken in rotation. During the sleeping period, the dried sludge accumulating on the surface of separate out is scraped off. The particular organic loading is not large on the sand filter. Sewage application is only 0. 825 to 1. 1 million amounts per hectare per day.
Make use of
It is found that the fertilizer from an intermittent sand filtration system is usually better in top quality than that resulting from some other type of treatment and can even end up being disposed of without dilution. However, because of the large terrain area required, a filtration of this type is now hardly ever constructed in cities. These are primarily suited for institutions, nursing homes, and other small installations.
