当前位置:主页 > 科技论文 > 农业技术论文 >

滇池东岸大棚种植区农业污水污染特征及处理工艺外加碳源生物脱氮比较研究

发布时间:2018-01-31 06:39

  本文关键词: 滇池流域 大棚种植区 农业污水 外加碳源 出处:《重庆大学》2015年硕士论文 论文类型:学位论文


【摘要】:针对滇池流域的水污染情况,通过一系列重点治理工程已经构建起了由片区截污、集镇与村庄截污、河道截污、干渠截污等四个层次组成的滇池流域环湖截污治污体系,但是由于尚缺一些关键的配套系统技术支撑和控制平台,该体系在如何充分发挥该体系的综合控污效能方面目前还存在问题,需要进一步的完善,其中农村农业污水作为滇池污染负荷的重要组成部分,它的高效收集和稳定处理运行关键技术研究将会对最大程度的联合发挥截污体系的环境效能进而削减滇池污染负荷、改善滇池水质发挥重要作用。然而一方面前人关于农业污水的水质水量在汇集过程中的变化规律研究中采用的实测降雨数据场次较少,所得结论的准确性仍有待进一步提高以便确定污染负荷的拦截条件,另一方面关于农村农业污水的处理工艺的经验较少,外加碳源的补充方式还有待优化和深入研究以保证低碳氮比的农业污水能得到良好的处理,因此深入探究农业污水在降雨过程中流量和污染负荷的变化规律和研究外加碳源的最佳类型和最优碳氮比对实现滇池环湖截污体系的最大效能具有重要意义。本论文针对滇池流域环湖截污体系中存在的上述两个问题,研究示范区内农村农业径流污水水质水量变化规律和不同碳源类型及碳氮比下的农业污水处理效果。研究得出的主要结论如下:①滇池东岸典型的蔬菜大棚和花卉大棚种植区域的农灌沟径流峰值时间较降雨时间有一定的滞后,但滞后时间没有明显的规律性,受许多因素的影响,主要包括与流域物理性质(土壤性质、植被覆盖)和降雨特征(降雨历时、降雨强度)相关的一些因素。②蔬菜大棚与花卉大棚农田径流中的COD、SS、氨氮和TP浓度值在总体上是花卉大棚高于蔬菜大棚,而TN浓度值相反。③蔬菜大棚与花卉大棚农田径流中各项水质污染指标随时间的变化无固定规律,主要是受到不同作物种植区土壤情况、施肥情况、农业生产作业情况不同等多重因素的综合影响。④当甲醇C/N5.12,乙酸钠C/N6.07,葡萄糖C/N8.09时,反应装置的脱氮效果较好,达到国家《城镇污水处理厂污染物排放标准》(GB18918-2002)中的一级A标准。⑤甲醇脱氮效果最好,乙酸钠次之,葡萄糖最差。
[Abstract]:In view of the water pollution situation in Dianchi Lake basin, a series of key control projects have been constructed to intercept pollution from the areas, towns and villages, and river channels. There are four levels of pollution control system in Dianchi Lake basin, but some key supporting systems and control platform are lacking. There are still some problems in how to give full play to the comprehensive pollution control efficiency of the system, which needs further improvement, among which rural agricultural sewage is an important part of the pollution load of Dianchi Lake. The research on the key technology of high efficiency collection and stable treatment operation will maximize the environmental efficiency of the sewage interception system and then reduce the pollution load of Dianchi Lake. Improving the water quality of Dianchi Lake plays an important role. On the one hand, on the one hand, on the one hand, the number of measured rainfall data used in the study on the variation of water quality and quantity of agricultural sewage in the process of collection is less. The accuracy of the conclusions still needs to be further improved in order to determine the interception conditions of pollution load, on the other hand, there is less experience on the treatment process of rural agricultural sewage. Additional carbon sources need to be optimized and further studied to ensure that the low carbon to nitrogen ratio of agricultural sewage can be treated well. Therefore, it is of great significance to study the variation of discharge and pollution load of agricultural sewage during rainfall and to study the optimal carbon source type and the optimal carbon nitrogen ratio for realizing the maximum efficiency of sewage interception system around Lake Dianchi Lake. This paper aims at the two problems mentioned above in the system of sewage interception around the lake in Dianchi Lake Basin. The changes of water quality and quantity of rural agricultural runoff sewage and the treatment effect of agricultural wastewater under different carbon source types and C / N ratio were studied in the demonstration area. The main conclusions are as follows:. 1. The peak runoff time of agricultural irrigation ditch in the typical vegetable shed and flower shed area on the east coast of Dianchi Lake was lagged behind the rainfall time. However, the lag time has no obvious regularity and is affected by many factors, including physical properties (soil properties, vegetation coverage) and rainfall characteristics (duration of rainfall). Some factors related to rainfall intensity. 2. The CODSS, ammonia nitrogen and TP concentration of runoff in vegetable greenhouse and flower shed were higher than that in vegetable greenhouse on the whole. On the contrary, TN concentration is opposite. 3. The change of water quality pollution index in vegetable shed and flower shed with time has no fixed rule, it is mainly affected by soil condition and fertilization in different crop planting areas. When methanol C / N 5.12, sodium acetate C / N 6.07 and glucose C / N 8.09, the denitrification effect of the reactor was better. According to the first class A standard (GB 18918-2002), methanol denitrification is the best, sodium acetate is the second, and glucose is the worst.
【学位授予单位】:重庆大学
【学位级别】:硕士
【学位授予年份】:2015
【分类号】:X712

【相似文献】

相关期刊论文 前10条

1 杨敏;孙永利;郑兴灿;李鹏峰;;不同外加碳源的反硝化效能与技术经济性分析[J];给水排水;2010年11期

2 王之晖,王淑莹,彭永臻,高春娣;前置反硝化脱氮系统外加碳源在线控制基础[J];环境科学;2004年03期

3 邵留;徐祖信;尹海龙;;污染水体脱氮工艺中外加碳源的研究进展[J];工业水处理;2007年12期

4 李云蓓;李伟光;;不同类型的外加碳源对污泥堆肥过程氮素损失的影响[J];土木建筑与环境工程;2014年02期

5 杨巧林;奚小英;陈娜;张静;刘曦;杜鹃;;外加碳源对污水厂异常进水时的强化脱氮效果[J];中国给水排水;2011年03期

6 操家顺;侯梁浩;方芳;江心;肖敏艳;陈学明;;温度及外加碳源对生物脱氮除磷过程的影响[J];环境工程学报;2013年06期

7 冯延申;黄天寅;刘锋;裴海防;;反硝化脱氮新型外加碳源研究进展[J];现代化工;2013年10期

8 孙常宇;唐玉斌;陈芳艳;郁f ;;外加碳源对木糖氧化无色杆菌降解(艹屈)的影响[J];环境科学与技术;2010年12期

9 于薇;;活性污泥法外加碳源的计算机模拟[J];环境工程;2009年S1期

10 宋卫锋;林梓河;罗丽丽;严明;;外加碳源对选矿废水浮选药剂生物降解效果的影响[J];化工环保;2011年03期

相关硕士学位论文 前7条

1 周晓航;滇池东岸大棚种植区农业污水污染特征及处理工艺外加碳源生物脱氮比较研究[D];重庆大学;2015年

2 张仲玲;反硝化脱氮外加碳源的选择[D];哈尔滨工业大学;2010年

3 徐佩;外加碳源生物滤池处理城市污水厂尾水脱氮试验研究[D];武汉科技大学;2011年

4 谢卫朋;SBR工艺生物脱氮及外加碳源效果研究[D];太原理工大学;2014年

5 孙丽娜;SBR工艺脱氮除磷升级改造试验研究[D];太原理工大学;2014年

6 罗海恩;吲哚高效降解菌的筛分及生物降解特性的研究[D];广东工业大学;2015年

7 周伟肖;β-内酰胺类抗生素及中间体降解途径研究[D];哈尔滨工程大学;2012年



本文编号:1478484

资料下载
论文发表

本文链接:https://www.wllwen.com/kejilunwen/nykj/1478484.html


Copyright(c)文论论文网All Rights Reserved | 网站地图 |

版权申明:资料由用户40a51***提供,本站仅收录摘要或目录,作者需要删除请E-mail邮箱bigeng88@qq.com