Research On The Biological Treatmeat Of High Salinity Wasteater

At present, in the high-salt wastewater biological treatment, biological treatmentsystem by the salinity and the effect of organic matter and ammonia nitrogen treatment inthe high salt environment conclusions of the study is not yet unified. Currently used in theactual processing systems the A2O Process, the SBR process, the conventional activatedsludge, biological trickling filter, extended aeration activated sludge process, and so on, forthe high-salt wastewater using membrane bioreactor (MBR) process are not many. Thisarticle by a certain test theoretical research, high-salt wastewater treatment works in orderto provide some theoretical and technical support.This paper (MBR) technology, high-salt wastewater sludge culture settlementperformance, and high-salt wastewater organic matter, ammonia degradation of thevariation, rich wastewater with high salinity wastewater treatment theory and the guidanceof engineering practice is of great significance. Gradually increased in proportion to thehigh salinity (20%,30%,40%,50%,60%,70%) and50%of high saline, high saltacclimation of two activated sludge were compared and then study the different organiccompounds, ammonia influent loading, salinity shock, PH value change on the high-saltactivated sludge system, organic matter and ammonia removal.The main findings are as follows:1, the sludge in the aspects of the lecture: the activated sludge domesticated in thesalt-free environment, organic matter and ammonia nitrogen removal in biologicaltreatment systems were able to achieve more than95%. Prior to joining the high-saltwastewater, with a higher proportion of high-salt wastewater, activated sludge biologicaltreatment system structure changes, the activated sludge flocs became smaller and smaller,while the tightness of the flocs gradually; sewage mud volume index (SVI) decreased withthe increase in the proportion of high saline. The sharp increase in salinity,16-30d activatedsludge culture early, mid, late dominant microbial house trichomoniasis and any amoeba,semi-brow insects, insect clock and regular shape zoogloea. Bacteria micelles of halophilicbacteria were successfully cultured and have good salt tolerance.2, remove the organic law of research: control of water parameters pH valuesbetween7.5-8.5, nutrition ratio of BOD5: N: P=100:5:1, temperature controlled at20-25℃, the influent concentration of organic matter was400mg/L or so, gradually increase thehigh saline proportion to50%and added directly to50%a high proportion of two high-saltbrine activated sludge acclimation to explore the organic removal rate; by control undercertain conditions, to explore the PH organic load and salinity impact on the organic removal rate.3, the ammonia removal study of the law: to control water parameters pH valuesbetween7.5-8.5, the nutrient ratio of BOD5: N: P=100:5:1, temperature controlled at20-25℃in the influent ammonia concentration of45mg conditions/L or so, graduallyincrease the proportion of high salinity water to50%and added directly to the activatedsludge of50%a high proportion of two high-salt brine the domestication way to explorethe impact of the ammonia nitrogen removal rate; by controlling certain conditions, explorethe PH value, organic load and salinity impact on the ammonia removal.Test the parameters of the MBR process to deal with high-salt wastewater, and get the besttreatment technology to reduce the high cost and high energy consumption usingmaterialized approach, provide technical support for the actual engineering wastewatertreatment. Nature rich sea water with high salinity, and how to use sea water to solve theproblems currently facing water shortages, the development of biological treatment ofwastewater with high salinity is particularly crucial.