文献类型：期刊文献

英文题名：Inhibition effects of full degradation barley straws on algal

作者：Cui, Li-Juan[1] Zhao, Xin-Sheng[1] Li, Wei[1]

通信作者：Cui, L.-J.

机构：[1] Institute of Wetland Research, Chinese Academy of Forestry, Beijing 10009, China

年份：2013

起止页码：884-886

外文期刊名：Proceedings of the 2013 3rd International Conference on Intelligent System Design and Engineering Applications, ISDEA 2013

收录：EI(收录号：20131016085554)

语种：英文

外文关键词：Algae - Nitrogen removal - Phosphorus - Water pollution - Water treatment - Degradation - Dredging - Water pollution control - Eutrophication - Nitrogen - Straw

摘要：How to control water eutrophication bloom having been the difficulties in the field of environmental engineering. Various measures have been taken to control the occurrence of algal blooms and slow down the outbreak of the frequency, such as source control (non-point source pollution control and abatement nutrient loading, sediment dredging, etc.), inhibition algaecide measures (artificial salvage or kill algae, etc.) have failed to achieve the desired effect, which had the effect only in the short term, even some improper physical or chemical methods had exacerbated the fragile wetland ecosystem. Therefore, to explore effective, economical, and no secondary pollution, low ecological risk control algal blooms method is an important task for environmental science. In this paper, barley straws with pretreated (nitrogen and phosphorus) were added to the eutrophication water bodies, to analyze the inhibition effect of full degradation barley straws on algal. We prepared a number of 50×20×25 cm glass tanks and aerators, and selected mature dry barley straw as the test material. Barley straws were cut into 3 as the gradient, and 0.3g/m3 0.5g/m3 and 2g/m3 concentration began to do under three parallel; while using not add to the degradation of barley straw "medium" + "algae" to deal with control. pH, EC, chla, algae type and quantity were observed every three days in 30 days. The results show that the physical and chemical changes in the nature of the water for the inhibition effects of degradation of barley straw. The change of pH and EC made barley straw in the chemical degradation process, the development of biological response to a favorable direction, which conducive to the generation and accumulation of algal material. Without suppression of the handle direct degradation of barley straw algae is not obvious, the full effects of algal addition to nitrogen and phosphorus in barley straw degradation significantly higher than that of the control, test period algae proliferate phenomenon, but over time was gradually reduced trend. Inhibition effect is a slight difference between the two, but not significant. Performance of the inhibition effect of different gradient content of the degradation of barley straw: 2.0g/m 3>0.5g/m3>0.3g/m3>0.1g/m3, when the concentration of degradation of barley straw when 0.1g/m3 basic loss of algal function; show that the degradation of barley straw algal role of broad-spectrum resistance. Microcystis aeruginosa water bloom beam filament algae, the Britain algae (P