Ammonium uptake by zeolite and treatment in UASB reactor of piggery wastewater
Ammonium uptake by zeolite and treatment in UASB reactor of piggery wastewater
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DOI：
10.1016/0273-1223(96)00140-0
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发表时间：
1995-01-01
影响因子：
2.7
通讯作者：
Bruno, G
中科院分区：
文献类型：
--
作者：
Cintoli, R;DiSabatino, B;Bruno, G
在实验室规模上测试了预筛选的养猪场废水的处理厂，使用意大利沸石（非常低的成本）将NH 4+从1500 mg/l强烈降低到300-400 mg/l，并在UASB和UASB-AF反应器中进行厌氧消化以去除有机物。沸石的离子交换预处理降低了废水对厌氧微生物种群的毒性，提高了UASB和UASB-AF反应器在有机物还原和产气方面的产率，这种配置的实验室设备达到60-80%的COD去除范围和很好地降低了出水营养物浓度，而使用厌氧第二阶段对有机物的去除效果不佳，因为有机负荷低。由沸石预处理、UASB-AF反应器厌氧消化和好氧活性污泥厂最终处理组成的处理循环给出了非常好的初步结果。
A treatment plant of pre-screened piggery wastewater is tested at lab-scale using Italian zeolites (of very low cost) to strongly reduce the NH4+ from 1500 mg/l to 300-400 mg/l and anaerobic digestion in UASB and UASB-AF reactors to remove organics. The ion-exchange pre-treatment by zeolite leads to a reduction of toxicity of wastewater towards anaerobic microbial population and improves the UASB and UASB-AF reactors yields in organics reduction and gas production, The laboratory plant in this configuration reaches a COD removal range of 60-80% and a good reduction of effluent nutrients concentration whereas the use of a anaerobic second stage gave modest results in organics removal because of low applied organic load. A treatment cycle composed of a pre-treatment with zeolites, anaerobic digestion in UASB-AF reactor and a final treatment in an aerobic activated sludge plant is giving very good preliminary results.