| 摘要 |
<p>The invention, 'Compact Dual Tapered Flocculator in the Process of Water Treatment' is a device to be used in the process of water treatment, which is a modification of conventional tapered flocculator. The invention consists of 2n+l flocculators arranged in series, (n being a positive integer),each of flocculator basin consisting of a set of paddles; a common shaft, a motor and a gear box for all the basins, with an arrangement to impart the required velocity gradients G to the water in the various flocculator basins, the magnitude of G decreasing from the first flocculator unit to the last i.e. (2n+l)th flocculator unit, while the detention time t of flocculation, in each flocculator basin increasing from the first to (2n+l)th flocculator, thus if G1, G2, G3, G4 G[2n+1) are the velocity gradients and ti, t2, t3, t4 t[2n+1) are the corr esponding detetntion times in the 1st, 2nd, 3rd, 4th [2n+l]th flocculator basins respectively, then G1>G2>G3>G4 >Gn >G2n+l and t1<t2<t3<t4 <tn <t(2n+l)and (G1tl + G2n+1 t2n+l) = (G2t2 + G2nt2n] = (G3t3 + G2n-1 t2n-l) =........ = (Gntn + Gn+2 tn+2) = 2Gn+l tn+1 The numerous experiments conducted in the laboratory by the author of this invention showed that the invention 'Compact Dual Tapered Flocculator in the Process of Water Treatment' gave much superior performance compared to the conventional tapered flocculation process. Since the invention is in the vertical direction, it occupies minimum space and hence the word 'compact'</p> |
