Releasing Regularity Of Colloidal Ammonium Nitrogen In Coastal Aqueous Medium

The subject studied and infiltration of ammonium chloride solution and waste of ammonium nitrogen in the filtrate in the silt,silty sand and fine sand three aqueous media migration regularity,and focused on the different pH conditions of ammonium nitrogen releasing regularity.And analysis of the ammonium nitrogen transport after aqueous medium total ammonium nitrogen and colloid adsorption of ammonium nitrogen longitudinal distribution,and on ammonium nitrogen transport process by the numerical simulation.This research has obtained some new cognition from the above research content:(1)Leachate leaching under aqueous medium water colloid colloid curve is relatively large,generally from large to small trend;garbage infiltration curve under the condition of leaching filtrate colloid concentration has certain volatility.The colloidal particle size and Zeta potential are changed from big to small,the ammonium chloride solution leaching of the colloidal particle size of high volatility in the late migration test and the particle size is relatively small.Landfill leachate and leaching in the late,the water colloid size difference is not large.The trends of Zeta potential changes in leaching solution under the conditions of two kinds of values are similar.(2)The pore volumes are relatively short of rubbish leachate release test of ammonium nitrogen in leachate,and the release amount of the total ammonium nitrogen,ammonium nitrogen and colloid adsorption colloid is also relatively small.Ammonium chloride ammonium nitrogen release and leachate discharge test-ammonium nitrogen the average pore volumes were 18 and 7.7.Ammonium chloride ammonium nitrogen and ammonium nitrogen in leachate-each pore volume number of ammonium nitrogen average release quantity was 33 g/g and 33.1 g/g,colloidal adsorbed ammonium nitrogen were 8.8 g/g and 6.3 g/g,ammonium nitrogen colloidal total ammonium nitrogen were 26.7%and 19%,so the release of colloidal ammonium nitrogen to total ammonium nitrogen to control a.Ammonium chloride ammonium nitrogen in the process of release,in strong alkaline conditions the release and the release rate of total nitrogen and ammonium nitrogen and ammonium colloidal than other pH conditions;in contrast,leachate-ammonium nitrogen ammonium nitrogen and total nitrogen in ammonium colloid,release amount and release speed affected by the smaller,pH changes.(3)Ammonium nitrogen in ammonium chloride retention was significantly higher than that of ammonium nitrogen in leachate of landfill,and three kinds of aqueous media have shown the same rules.Colloidal ammonium nitrogen ammonium nitrogen and ammonium chloride retention in aqueous medium of almost all along the direction of flow are increased,and the distribution of ammonium nitrogen retention infiltration filtrate and colloidal ammonium nitrogen is relatively uniform.(4)The total nitrogen is higher than the equilibrium adsorption point of dissolved ammonium nitrogen,indicating that the equilibrium adsorption rate of total ammonium nitrogen in the process of migration is greater,the colloidal ammonium point has some effect on instantaneous adsorption,and colloid will promote adsorption of ammonium nitrogen in migration process.Block coefficient of ammonium nitrogen in migration process will increase with the size of the water particle.