Study on Treatment of Swine Wastewater by Sodium Type Mercerizing Zeolite
The efficiency of swine wastewater treatment was studied by static experiment and dynamic experiment,using sodium type mercerizing as adsorbent.The optimum parameter condition for swine wastewater treatment summarized.The experimental results showed that the optimum parameters were pH=8.0,t=24h,T=25℃,300 g/L zeolite in the static experiment.In dynamic experiment when the velocity was 6 BV/h,12 BV/h and 24 BV/h,the penetrating capacity and volume of ammonia-nitrogen,phosphorus and CODCr were calculated.The removal efficiency of ammonia-nitrogen,phosphorus and CODCr was highest under the velocity of 12 BV/h.Penetrates capacity of ammonia nitrogen and phosphorus were 4.04 mg/g and 0.14 mg/g,penetrates volume were 29 BV and 58 BV,respectively.China,by far the worlds biggest producer of pork,is home to about half the worlds porcine population with 460 million pigs1-2.In recent years,Though Chinas pig industry is developing rapidly,a large amount of wastewater from piggery farm is mostly discharged directly without appropriate recycle and treatment3-4,which can bring about a serious pollution to the environment5-6.The domestic and foreign research shows that anaerobic digestion is an effective way of the swine wastewater treatment.In this process7-8,anaerobic digestion generated biogas,which is a kind of clean energy,and compost,but after this process fermented liquid still contain high concentration of nitrogen and phosphorus,which is difficult to deal with9-11.Therefore,how to remove nitrogen and phosphorus from swine wastewater is an important problem deserving of deep study.Zeolite is an inorganic mineral material and it is plentiful in China.Since the exploitation cost of zeolite is low,it can be used to the fields of environmental engineering widely 12.Not only did zeolite remove ammonia-nitrogen13 effectively,it can also specially removed of heavy metals14-15 and organic compounds16-17.Because of its advantages of low operating cost,reproducibility and energy saving,it was a safe,efficient and economic way to remove the pollutant in water In static adsorption experiments,the removal effect of ammonia-nitrogen,phosphorus and CODCr using zeolite were systematically d.The effects of different dosage,pH,reaction time to the removal of ammonia-nitrogen,phosphorus and CODCr were investigated too.In dynamic experiments,we calculated the adsorption capacity of zeolite during the different retention time.These data have provided technical support for the treatment technology of the livestock wastewater.
Sodium type mercerizing zeolite Swine wastewater Adsorption dynamic Experiments
Xueyu Liu Yonghui Song Yu Lin Dongna Zhang
No.8, Dayangfang, Anwai Beiyuan, Chaoyang District, Beijing, China No.29,Xueyuan Road, Haidian District, Beijing, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
360-366
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）