Development of high performance treatment and recycling systems of biogenic waste water by Multi-Soil-Layring method

1、木炭层、沸石层和各种土壤在MSL（Multi-Soil-Layring）系统中的作用。沸石层通过强化铵离子固定、硝化和反硝化作用对脱氮起重要作用。然而，沸石作为氢氧化铁固定磷酸盐的载体没有显示出上级特性。不同土壤类型间差异不显著。长期处理相对高浓度的垃圾，土壤种间存在一定的差异。3种土壤中，黑北土、安土表现出最好的处理效果，其次是红壤、桑迪潮土、粉土表现出最差的处理效果。2、MSL系统具有处理高浓度猪场废水的潜力。最佳曝气量可显著降低BOD和P。但当T-N浓度高于500 ppm时，处理效果不稳定，处理效果较差。稀释至T-N小于100- 200 ppm是必要的。 ...更多信息 污水处理厂已连续8年成功运行。在曝气控制最佳的情况下，MSL处理出水BOD <15 ppm，T-N <15 ppm，T-P <2 ppm。24 h曝气过程中，透明度、BOD、SS、T-N、NO3-N、NH 4-N、T-P、pH、ORP等指标发生了动态的、系统的变化，透明度和pH可作为曝气过程中最简单的控制指标。与传统的土壤渗滤系统相比，MSL系统的处理效果有了显著的改善。5、在长期的MSL处理生物废水过程中，形成了IAP-沸石、磷酸铁铵沸石。IAP-沸石对水稻土和蔬菜土的改良试验表明，IAP-沸石是一种优良的土壤改良剂。少

1, The role of layrs of charcoal, zeolite, and various soils in MSL,Multi-Soil-Layring, system. Zeolite layr is important for nitrogen removal through enhancement of ammonium ion fixation, nitrification and denitrification. However, Zeolite did not show superior characteristics as a carrier of iron hydroxide for phosphate fixation. Difference of soil species was not dramatic. Long term treatment of relatively high concentration waste showed some difference of soil species. Andisols, Kuroboku soil, showed the best performaance, calyey Ultisols, Red soils, comes the next, sandy Entisols, Masa soil, showed the worst performance among the three soils tested.2, The MSL system showed the potential to apply high concentration piggery waste water treatment. Optimum aeration reduced the BOD and P dramatically. However, if T-N concentration is higher than 500 ppm, the treatment was not stable and poor. Dilution to T-N less than 100-200ppm was necessary.3, Long term on-site treatment of domestic … More waste water by MSL has been continued 8 years successfully. If aeration is controlled optimum, MSL showed the quality of treated water less than 15ppm of BOD,less than 15ppm of T-N and less than 2ppm of T-P.The simple way to control aeration was established. The on-off of 24hr aeration showed dynamic and systematic changes of Transparency, BOD,SS,T-N,NO3-N,NH4-N,T-P,pH,and ORP.The transparency and pH may be the best simple indicators for on-off aeration management.4, The MSL system was successfully applied to the treatment of restaurant and toilet waste water treatment at Kasetsart University cafeteria, Bangkok, Thailand. The MSL system showed dramatic improvement of treatment performance comparing traditional soil infiltration system widely used in the region.5, The, IAP-zeolite, iron ammonium phosphate zeolite was formed during the long term biogenic waste water treatment by MSL The IAP-zeolite showed function as an excellent soil conditioner throug the amendment trials to rice soils and vegetable soils. Less