| 摘要 |
The invention relates to the treatment of water, industrial and household waste water, particularly to the purification of waste water of city dumps of solid domestic wastes (CDSDW) from organic and mineral pollutants. The task of the invention is the increasing of purification degree of high-strength waste water from solved and suspended organic and mineral substances of various nature. A process for treatment of waste water is proposed, consisting in treatment of water by the mixture of aluminium sulphate and ferrum (III) at mass ratio: 1:(0.5-0.8), correspondingly in quantity of 0.25-0.45 g/dmand flocculant based on hydrolyzed polyacrylonitrile (HPAN), exposed to chemical and physical treatment. The process for the preparation of flocculant is proposed, consisting in mixing of HPAN with oxy acids of aliphatic series of general formula of CHO, where p=1- quantity of 4.0-6.0 % vol. from volume of HPAN and treatment of the obtained mixture by US- impact with frequency of 20.0-24.0 khz, of power of 2.0-4.0 W/cmfor 1.5-3.0 min. The realization of the proposed process for the purification of waste water CDSDW with the use of the proposed flocculant allows achieving purification degree (C) at the level of 86.0-92.0 % at achievement of light transmission coefficient (A, %) equal to 88.0-94.0 %. |
