The influence of air-water ratio,HRT(hydraulic retention time),media-filling rate for biological contact oxidation tank and dosage of flocculating agent,surface loading for flotation tank on pollutants removal was studied.

Under the condition of DO of 4 to 5 mg/L in HSMBR and HRT of 4 h,the COD removal rate is 75%,62% and 56% respectively when the carrier filling rate.

The elongation and filling rate have been selected and the tensional coefficient has been calibrated systematically on the bases of the rolling law.

In order to model the estimation for the over-sample and sub-pixel imaging considering the detector s filling rate,the detector pixel spread function is derived adversely by the sub-pixel arithmetic.

As a result,the manipulate conditions were determined of the steel ball medium filling ratio and original ratio,grinding production and concentration,and compared with the energy saving on several type mill.

Some concrete suggestions for increases of packing fraction and rotating speed are presented, the rotating speed is 11.

18 m×3 m ball mill with double chambers(the front chamber for steel shot and the rear for steel roll), overfall type, packing fraction of 35%～40% and productive capacity of 3 t/h phosphate rock was retrefitted into the one with double chambers, overfall type through grating, packing fraction of 55%～60% and productive capacity of 6 t/h.

Numerical result shows that the width of the lowest band gap increases (decreases) with increasing the filling fraction (lattice constant); The center frequency of the lowest gapwas about independent of the cylinder radius, but gets lower with increasing lattice constant.

There will be not only one gap in the photonic band structure in the case of incidence along the direction,it is shown that the middle frequency v of pseudo-gaps including the first gap and the third gap will increase when the filling fraction of the background dielectric medium inside the opal voids ff decreases, and that v will increase when the sintering factor.