Study On Resource Utilization Technology Of Domestic Sewage In Daqing Reclaimed Water Prepared Polymer

At the beginning of 1980 s, Daqing oilfield three oil recovery technology research on polymer flooding as the focus, from 1996 onwards, oil entered into the industrial production of polymer flooding has been popularized in large area in Daqing oilfield,Daqing oilfield stable oil production and made a great contribution, become an important pillar of sustainable development of Daqing Oilfield and the group company.At present, the Daqing oilfield oil production plant configuration of polymer mother liquor used tap water, the current large-scale application of polymer flooding oil in Daqing oilfield, with about 30 million cubic meters of water. With the accelerated pace of construction in Daqing City, water resources are increasingly scarce, while the price of water is increasing, the cost of oil displacement is increasing,and the operating pressure is increasing.This topic in Daqing oilfield Water Service Company a total of three sewage treatment plant as the research object, the three sewage treatment plants in sewage treatment of 40 million cubic meters, but most of the water resources are not two times to use, resulting in the waste of water resources. If the depth of this part of the sewage treatment, to meet the requirements of the polymer, can effectively reduce the cost of polymer. Create significant economic and social benefits for the sustainable development in Daqing oilfield, for the construction of "one hundred years of green oil, improve oil workers production and living environment, realize the wastewater reuse has important significance.In the preliminary experiment, the experiment was carried out to study the influence of the main ions in wastewater on the configuration of polymer viscosity,and to master the key water quality monitoring methods and the polymer performance indicators. Through a large number of water quality sampling investigation, Central Wastewater Treatment Plant preliminary determination of water main influencing factors limiting polymer mineralization, calcium ion, magnesium ion, iron ion,microbial indicators, suspended matter.In order to make the water reach the water poly standard, through screening experiment, according to different process combinations, the treatment effect and cost analysis, to determine the flow of sand filter + gel cation exchange resin ion exchange column and quaternary ammonium salt bactericide as water polymer selection process,the process can ensure the water distribution is achieved gather requirements, instead of water allocation to polymer, the polymer flooding effect. And the annual cost savings of 16 million 833 thousand and 800 yuan for the oil field.