Study on the effect of urban river environmental dredging and hydraulic dredging:taking Xuejiabang, Liangtang River of Wuxi as an example
-
摘要: 以内源污染严重的无锡市梁塘河薛家浜为研究区,开展环保疏浚和水利疏浚试验,通过疏浚前后底泥和水体中总氮、总磷浓度变化及底泥中氮、磷的静态释放通量,评估2种疏浚方式对河道内源污染削减效果的影响。结果表明:2种疏浚方式都能有效降低底泥中营养盐浓度,环保疏浚后底泥中总氮、总磷浓度分别削减了46.50%和35.51%,水利疏浚后分别削减了40.10%和30.51%。但达到同样疏浚效果时,相较环保疏浚,水利疏浚的工程量增加;在外源污染得到较好控制的前提下,2种疏浚方式均能有效削减内源释放对水体的污染,其中环保疏浚对氮、磷释放通量削减率较高,分别为46.92%和38.53%,水利疏浚则为40.99%和30.09%;考虑到城区土地资源紧缺,水利疏浚易超挖及疏浚后水生态系统较难恢复的问题,建议采取环保疏浚方式解决城市河道内源污染问题。Abstract: In view of the serious endogenous pollution in Xuejiabang, Liangtang River of Wuxi City, two dredging methods, including environmental dredging and hydraulic dredging, were applied to evaluate the effect of dredging on the reduction of endogenous pollution in river by studying the changes of total nitrogen and total phosphorus in sediment and water before and after dredging, and the static release flux from the sediment. The results showed that the two dredging methods could effectively reduce the nutrient contents in the sediment. After environmental dredging, the total nitrogen and total phosphorus concentrations were reduced by 46.50% and 35.51%, respectively, and after hydraulic dredging, the total nitrogen and total phosphorus concentrations were reduced by 40.10% and 30.51%, respectively. But to achieve the same dredging effect, hydraulic dredging would lead to an increase in the amount of work compared with environmental dredging. On the premise of better control of exogenous pollution, both the two dredging methods could effectively reduce the pollution caused by endogenous release to water. The nitrogen and phosphorus release flux reduction rate of environmental dredging was higher with 46.92% and 38.53%, respectively, while that of hydralic dredging was 40.99% and 30.09%, respectively. In view of the shortage of land resources in urban areas, the problem of easy over-digging by hydraulic dredging and the difficulty in recovering the water ecosystem after dredging, it was suggested to adopt the environmental dredging method to solve the problem of the internal pollution of urban river courses.
-
Keywords:
- environmental dredging /
- hydraulic dredging /
- total nitrogen /
- total phosphorus /
- urban river
-
-
[1] 曹承进, 陈振楼, 王军 , 等. 城市黑臭河道底泥生态疏浚技术进展[J]. 华东师范大学学报(自然科学版), 2011(1):32-42. CAO C J, CHEN Z L, WANG J , et al. Review of sediment ecological dredging in urban black-odors river treatment[J]. Journal of East China Normal University (Natural Science), 2011(1):32-42.
[2] 郭赟, 赵秀红, 黄晓峰 , 等. 原位活性覆盖抑制河道底泥营养盐释放的效果研究及工程化应用[J]. 环境工程, 2018,36(6):6-11. GUO Y, ZHAO X H, HUANG X F , et al. Study on in-situ active capping for eutrophic sediment nutrients control in river and its engineering application[J]. Environmental Engineering, 2018,36(6):6-11.
[3] 柏学凯, 雷立改 . 污染底泥处理的研究进展[J]. 宁夏农林科技, 2012,53(10):140-142. BAI X K, LEI L G . Progress on treatment of contaminated sediments[J]. Ningxia Journal of Agriculture and Forestry Science & Technology, 2012,53(10):140-142.
[4] 毕磊, 邱凌峰 . 污染底泥修复治理技术[J]. 中国环保产业, 2010(11):32-35. BI L, QIU L F . Treatment technologies of remediation for contaminated sediment in rivers[J]. China Environmental Protection Industry, 2010(11):32-35.
[5] 陈荷生, 江溢, 宋祥甫 , 等. 太湖湖内综合治理技术[J]. 水利水电技术, 2002,33(12):46-49. CHEN H S, JIANG Y, SONG X F , et al. The technique to comprehensively harness water pollution in Taihu Lake[J]. Water Resources and Hydropower Engineering, 2002,33(12):46-49.
[6] 张景钰, 方江华 . 关于太湖污染底泥生态疏浚工程的探讨[J]. 西部探矿工程, 2005(2):213-215. ZHANG J Y, FANG J H . Discussion on ecological dredging project of Taihu Lake contaminated sediments[J]. West-China Exploration Engineering, 2005(2):213-215.
[7] 吴沛沛, 刘劲松, 胡晓东 , 等. 滆湖北部底泥疏浚的生态效应研究[J]. 水生态学杂志, 2015,36(2):32-38. WU P P, LIU J S, HU X D , et al. Ecological effects of dredging on aquatic ecosystem in northern Gehu Lake[J]. Journal of Hydroecology, 2015,36(2):32-38.
[8] 吴芝瑛, 虞左明, 盛海燕 , 等. 杭州西湖底泥疏浚工程的生态效应[J]. 湖泊科学, 2008,20(3):277-284.
doi: 10.1385/JMN:20:3:277 pmid: 14501008WU Z Y, YU Z M, SHENG H Y , et al. Ecological effects of the dredging in the West Lake,Hangzhou[J]. Journal of Lake Sciences, 2008,20(3):277-284. doi: 10.1385/JMN:20:3:277 pmid: 14501008
[9] 米帅 . 杭州河道清淤方式技术研究[J]. 市政技术, 2016,34(1):114-116. MI S . On the river dredging mode in Hangzhou[J]. Municipal Engineering Technology, 2016,34(1):114-116.
[10] LAGER T, HAMER K, SCHULZ H D . Mobility of heavy metals in harbor sediments:an environmental aspect for the reuse of contaminated dredged sediments[J]. Environmental Geology, 2005,48:92-100.
[11] 余灿 . 河道底泥环保疏浚方式及处理方案研究[J]. 科学技术创新, 2018(12):95-96. [12] 引梁塘河河道污染底泥环保疏浚工程示范技术报告[R]. 无锡:无锡城市发展集团有限公司, 2018. [13] 金雪林, 薛路阳, 金杰 . 生态清淤及淤泥快速处置一体化技术的应用[J]. 人民黄河, 2013,35(9):43-45. JIN X L, XUE L Y, JIN J . Application of ecological dredging silt and rapid disposal of the integration technology[J]. Yellow River, 2013,35(9):43-45.
[14] 毛志刚, 谷孝鸿, 陆小明 , 等. 太湖东部不同类型湖区底泥疏浚的生态效应[J]. 湖泊科学, 2014,26(3):385-392.
doi: 10.1097/01.bpo.0000206515.84577.70 pmid: 16670554MAO Z G, GU X H, LU X M , et al. Ecological effects of dredging on aquatic ecosystem in the different regions of eastern Lake Taihu[J]. Journal of Lake Sciences, 2014,26(3):385-392. doi: 10.1097/01.bpo.0000206515.84577.70 pmid: 16670554
[15] 俞海桥, 方涛, 夏世斌 , 等. 不同生态修复措施下太湖西五里湖沉积物氮磷形态的时空分布[J]. 湖泊科学, 2007,19(6):683-689. YU H Q, FANG T, XIA S B , et al. Seasonal and vertical distribution of nitrogen and phosphorus in the sediment under different ecological restoration measures in the West Lake Wuli,Lake Taihu[J]. Journal of Lake Sciences, 2007,19(6):683-689.
[16] 钟继承, 刘国锋, 范成新 , 等. 湖泊底泥疏浚环境效应:Ⅰ.内源磷释放控制作用[J]. 湖泊科学, 2009,21(11):84-93. ZHONG J C, LIU G F, FAN C X , et al. Environmental effect of sediment dredging in lake:Ⅰ.the role of sediment dredging in reducing internal phosphorous release[J]. Journal of Lake Sciences, 2009,21(11):84-93.
[17] 钟继承, 刘国锋, 范成新 , 等. 湖泊底泥疏浚环境效应:Ⅱ.内源氮释放控制作用[J]. 湖泊科学, 2009,21(3):335-344. ZHONG J C, LIU G F, FAN C X , et al. Environmental effect of sediment dredging in lake:Ⅱ. the role of sediment dredging in reducing internal nitrogen release[J]. Journal of Lake Sciences, 2009,21(3):335-344.
[18] 陈荷生 . 太湖底泥的生态疏浚工程[J]. 水利水电科技进展, 2004,24(6):34-37. CHEN H S . Eco-dredging project of sediment in Taihu Lake[J]. Water Resources and Electric Power, 2004,24(6):34-37.
[19] 王栋, 孔繁翔, 刘爱菊 , 等. 生态疏浚对太湖五里湖湖区生态环境的影响[J]. 湖泊科学, 2005,17(3):263-268. WANG D, KONG F X, LIU A J , et al. Analysis of the influence of the ecological dredging to ecosystem of Lake Wuli,Lake Taihu[J]. Journal of Lake Sciences, 2005,17(3):263-268.
[20] 王琦, 李中华 . 太湖梅梁湖生态疏浚工程实施效果研究[J]. 中国港湾建设, 2012(6):21-23. WANG Q, LI Z H . Study on effect of ecological dredging in Meiliang Lake in the Taihu Lake[J]. China Harbour Engineering, 2012(6):21-23.
[21] 钟继承, 范成新 . 底泥疏浚效果及环境效应研究进展[J]. 湖泊科学, 2007,19(1):1-10. ZHONG J C, FAN C X . Advance in the study on the effectiveness and environmental impact of sediment dredging[J]. Journal of Lake Sciences, 2007,19(1):1-10.
[22] LEE-HYUNG K, EUISO C, KYUNG-IK G , et al. Phosphorus release rates from sediments and pollutant characteristics in Han River,Seoul, Korea[J] Science of the Total Environment, 2004,321(1/2/3):115-125.
doi: 10.1016/j.scitotenv.2003.08.018 pmid: 15050390 -
期刊类型引用(10)
1. 赵金香，常成. 滨州市引黄平原水库水质演变趋势分析. 海河水利. 2024(08): 22-27 . 
百度学术
2. 林世奇. 黑臭水体治理技术和对策的探讨. 广东化工. 2024(17): 139-141 . 百度学术
3. 吴昊，肖付耀，孙维铭，李祎飞，邹华. 潮汐式生态滤床在平原河网地区污染河流治理中的应用. 环境工程学报. 2023(06): 2052-2066 . 百度学术
4. 陈重军，潘钰伟，谢嘉玮，谢军祥. 河流污染底泥原位覆盖材料及其应用研究进展. 环境工程技术学报. 2022(01): 100-109 . 本站查看
5. 何云斌，刘书敏，林嫙，赵风斌. 河道底泥环保疏浚技术与处理措施. 化工设计通讯. 2022(03): 174-176 . 百度学术
6. 杨帆，袁隆湖，黎一夫，何丹丹，刘旭冉，王冬波. 湖南省主要水系底泥重金属污染特征及其生态风险评价. 生态学报. 2022(05): 1934-1946 . 百度学术
7. 任芝军，杨桐飒，白莹，张博，王书航，吕龙义. 受污染河湖的物理化学及生物修复技术研究进展. 河北工业大学学报. 2022(02): 47-55 . 百度学术
8. 朱玥，丁颖，经欢欢，孔德智，周心刚，朱亮. 中山水库沉积物重金属分布特征及生态风险评估. 净水技术. 2022(11): 40-48+178 . 百度学术
9. 白冬锐，张涛，陈坦，王洪涛，金曦，郑凯旋，李忠磊，杨婷，金军. 苏州古城区域河道碳氮磷类污染物的分布特征. 环境科学. 2021(03): 1403-1415 . 百度学术
10. 李栗莹. 加强地区水生态环保力度的策略探究. 资源节约与环保. 2020(09): 39-40 . 百度学术
其他类型引用(7)
计量
- 文章访问数: 695
- HTML全文浏览量: 287
- PDF下载量: 171
- 被引次数: 17
下载:
