1) river sediments
河底沉积物
1.
Studies on cultivation of acid-tolerant methanogenic granular sludge using river sediments.;
河底沉积物培养耐酸产甲烷颗粒污泥的试验研究
2) deposits(bottom mud)
沉积物(河道底泥)
3) river bottom sediment
河底沉积
5) river sediment
河流沉积物
1.
Mercury,arsenic and antimony are common items in soil and river sediment samples in environment monitoring.
Hg、As、Sb是土壤和河流沉积物的常规测定项目。
2.
The Korean r iver sediments have much lower TIC,C a and carbona te contents than Chinese river sediments,whereas the Changjiang sediment is cha racterized by hi gh Ti content and the Huanghe sediment by h igh Ca,Na and car bonate contents.
韩国河流沉积物中Ca及碳酸盐含量显著低于长江和黄河,而其他元素含量则在二者之间;黄河沉积物以总无机碳(TIC)、Na和Ca含量高为特征,而长江沉积物则显著富集Ti和P。
3.
In terms of the geochemical distribution and seasonal variation of N, P and trace heavymetals in the sediments, Brisbane, Australia, this paper discusses some research methods applica-ble to environmental geochemistry of river sediments, and the mechanism of river pollution, pro-viding the important scientific basis for river evaluation and environmental arrangement control.
本文通过对澳洲普洛斯本河现代沉积物的粒度、营养元素和微量重金属元素地球化学分布及其季节性差异的研究，探索了河流沉积物环境地球化学的研究方法，阐述了河流现代沉积物的污染现状和规律，为河流的评价和环境治理等提供了重要的科学依据。
6) estuarine sediments
河口沉积物
1.
In this study,the release behaviors of oxygen-depletion materials,including of amount and rate,and influence conditions of organic pollutants in Haipo River estuarine sediments,which acted as the index of organic pollutants,were investigated.
以COD为耗氧有机物指标,通过对胶州湾海泊河河口沉积物引起的上覆海水COD变化的模拟实验,估算了耗氧有机物的释放量和释放速率,并对河口沉积物中耗氧有机物释放的影响因素和释放规律进行了研究。
补充资料：河底沉积物控制
河底沉积物控制(controlofbottomsediment)控制河流底泥释放污染物质的技术。常用的有：(1)覆盖。一种是在沉积物上覆一层相对浓密水层(例如盐水的浓密层)，另一种是覆盖一层衬砌物质(例如聚乙烯薄层和粘土或粉煤灰等散粒物质)。(2)疏浚。转移底泥。(3)氧化。引入新鲜淡水和湖水相混合来增加在底水中的溶解氧。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条