FQG spherical shallow sand filter is a spherical shell with unique interior design .It can assure the smooth flow when filtering so that the filter effect is good. Backwashing is formed when several airlift, recoil and high efficiency. Compared with other traditional sand filter, it is more automatic , more backwash, less sand usage and less water.

Filter housings are made of stainless steel, steel, rubber or plastic. It can bear high ballast ratio and corrosion resistance. A together-forming spherical shell withstanding the pressure of O.59Mpa.

Filter inner is made of black polyethylene,and it can resistant to environmental pressure, prevent embrittlement and not chemicals.

Unit	Style	Land occupation L*W*H		Filtering area(m2)		Flow for coarse filtration  T/H			Flow for fine filtration  T/H
1	FQG-1	1.22*1.22*2.4		1.16		40-50			15-25
2	FQG-2	3.5*1.22*2.4		2.32		80-100			30-50
3	FQG-3	4.9*1.22*2.4		3.48		120-150			45-75
4	FQG-4	6.7*1.22*2.4		4.64		160-200			60-100
5	FQG-5	8.4*1.22*2.4		5.8		200-250			75-125
6	FQG-6	10.2*1.22*2.4		6.96		240-300			90-150