Research Of Polymer-carrying Sewage Water Disposing And Reusing

Focus on the increasing discharge sewage after polymer floating, the failure of lowingmineralization rate of sewage water with traditional "disposal flow process with three steps,"polymer-carrying sewage water disposing with ionic exchange membrane is brought forward inthis paper.It adopts principle of electrodialysis: one of the membrane separation methods,integrated advantages of low energy consumption, low pollution, easy operation, high waterutilization ratio, etc.Based on the principle of ionic exchange membrane, we designed experimental equipment——ironic separator, cooperating with HARBIN INSTITUTE OF TECHNOLOGY. It is told thationic separator not only lowers mineralization rate of polymer-bearing sewage water efficiently,but also makes the after-disposing water suit the different mineralization rate by adjusting itsoperating voltage or fresh-water production;Circulating ultrafiltration membrane postpones theservice life of intima of ionic separator and the effictiveness is similar, using ionic separator aloneor using it with circulating ultrafiltration membrane together, based on the experiment of lowingmineralization rate of polymer-carrying sewage water by using separator separately and theexperiment of circulating ultrafiltration membrane pre-disposing of polymer-carrying sewagewater and the experiment of reducing mineralization rate of polymer-carrying sewage water bycirculating ultrafiltration membrane combined with ionic separator, operated at The 8th UnitedStation, Junan.Based on the above conclusion, we studied the ability of polymer solution formulating withwater disposed by ionic separator and formed the constitutive equation of nonlinear viscosity andelasticity to common polymer solution. Comparing and analyzing technical parameters, includingviscosity and elasticity, anti-shearing ability, residual drag coefficient, oil displacementeffictiveness and pressure change in the process of oil displacement, etc. in polymer solutionformulated with fresh water, disposed water or common polymer-carrying water respectively, wecan conclude the optimal project of polymer solution formulating with disposed sewage water andsupply reliably theoretic and experimental reference for it. Its feasibility will contribute toreducing the cost of polymer injecting and protecting environment.