摘要
为了减少微污染水体的处理成本,减轻化学药剂过量使用对自然环境产生的影响,该研究采用“生物技术”与“生态技术”相结合的污水生物生态处理技术(即潜流人工湿地技术)处理微污染水体。该研究的核心思路是通过构建人工湿地,然后利用湿地中种植的植物和微生物探究温度及溶解氧消耗量对潜流人工湿地去除微污染水体中的氨氮及总磷的影响。结果表明潜流人工湿地对微污染水体的净化有较好的效果。总磷和氨氮的去除主要由湿地中存在的动植物及存在于基质、填料及菌根间隙空间中的微生物的协同作用决定,其中微生物对氨氮和总磷的迁移转化是脱氮除磷的主要途径;水体中氨氮及总磷的去除率与溶解氧的消耗量呈现正相关,氨氮及总磷的去除率越高,DO的消耗量就越高。其中7月份时,湿地DO的消耗量最高(DO消耗量为0.4461 kg/d),氨氮去除率为54.327%,总磷去除率为34.375%;环境温度影响微生物对总磷和氨氮的去除率。环境温度为15~30℃(中温)时,生物除磷和生物脱氮的效率高,去除效率随温度的升高而增大。6月时总磷最大去除率为43.47%;10月份时氨氮去除率最高,为59.01%。
In order to reduce the treatment cost of micro-polluted water bodies and reduce the impact of excessive use of chemical agents on the natural environment,the research adopted a combination of"biotechnology"and"ecological technology"sewage biological ecological treatment technology(Subsurface flow constructed wetland technology)to treat micro Pollution of water bodies.The core idea of this research is to construct a constructed wetland,and then use the plants and microorganisms grown in the wetland to explore the effects of temperature and dissolved oxygen consumption on the removal of ammonia nitrogen and total phosphorus from micro-polluted water bodies in a subsurface flow constructed wetland.The results show that the subsurface flow constructed wetland has a good effect on the purification of micro-polluted water bodies.The removal of total phosphorus and ammonia nitrogen is mainly determined by the synergistic effect of the animals and plants present in the wetland and the microorganisms existing in the matrix,filler and mycorrhizal interspace.The migration and transformation of ammonia nitrogen and total phosphorus by microorganisms is the main factor for nitrogen and phosphorus removal.Approach:The removal rate of ammonia nitrogen and total phosphorus in the water body is positively correlated with the consumption of dissolved oxygen.The higher the removal rate of ammonia nitrogen and total phosphorus,the higher the consumption of DO.Among them,in July,the wetland DO consumption was the highest(DO consumption was 0.4461 kg/d),the removal rate of ammonia nitrogen was 54.327%,and the removal rate of total phosphorus was 34.375%;the environmental temperature affected the removal rate of total phosphorus and ammonia nitrogen by microorganisms.When the ambient temperature is 15~30℃(medium temperature),the efficiency of biological phosphorus removal and biological nitrogen removal is high,and the removal efficiency increases with the increase of temperature.The maximum removal rate of total phosphorus was 43.47
作者
付瑶
陈凡立
蒋文强
彭成法
刘培思
Fu Yao;Chen Fanli;Jiang Wenqiang;Peng Chengfa;Liu Peisi(Environmental Research Institute of Jinan City,Jinan 250102,China;Jinan Tianzheng Huanjing Technology Co.,Ltd.,Jinan 250014,China;Qilu University of Technology,School of Environmental Science and Engineering,Jinan 250353,China)
出处
《山东化工》
CAS
2021年第15期259-262,共4页
Shandong Chemical Industry
关键词
潜流人工湿地
微污染水体
氨氮
总磷
溶解氧
subsurface flow constructed wetland
micro-polluted water
ammonia nitrogen
total phosphorus
dissolved oxygen
