sewage stream 中文意思是什麼
sewage stream
解釋
污水流-
Stream standards refer to quality of receiving water downstream from the origin of sewage discharge.
水體標準是指污水排放點下游的受納水體的水質。 -
On the basis of the investigation of the content and distribution of heavy metals in sediments and benthic organisms from the sewage stream in guangzhou city, the antagonistic effect of selenium on the harm of mercury ( hg2 + ) to the tissues in swordtail fish ( xiphophorus helleri ), the 22nd offspring purely cultivated by pearl river fishery research institute, were measured by physiological and biochemical indexes and observation of electron microscopy
本研究中首先調查了廣州市河涌沉積物及底棲生物體內重金屬含量及分佈，並以珠江水產研究所培育的水生實驗動物?劍尾魚為實驗材料，利用環境生物技術，電鏡觀察等技術方法研究了重金屬?汞對劍尾魚組織的毒害及機體必需微量元素硒對其毒害的拮抗性影響。 -
The main study in this paper included as follows : the content and distribution of heavy metals in sediments and benthic organisms from the sewage stream in guangzhou city ; the acute toxicity and joint toxicity of mercury and selenium to swordtail fish ( xiphophorus helleri ) ; the damage of mercury to the indexes of antioxidant system in the gills and livers in swordtail ( including the measurement of the activities of total antioxidative capacity [ t ~ aoc ], superoxide dismutase [ sod ], glutathione peroxidase [ gsh - px ] and the concentration of malondiald - ehyde [ mda ] ) and the relief effects of selenium on it, as well as the physiological damage of mercury on the tissues, namely : the antagonistic effect of na + - k + ~ atpase activity on the tissues between selenite and mercury, and the ultrastructural damage under the exposure of mercury
研究內容主要有：廣州市河涌沉積物及底棲生物體內重金屬含量及評價；汞和硒對劍尾魚的急性毒性和聯合毒性及安全濃度的評價；汞對劍尾魚鰓和肝臟中抗氧化系統的毒性，包括對總抗氧化能力、超氧化物歧化酶、谷胱甘肽過氧化物酶活力及丙二醛含量的測定及硒對其保護作用；汞對劍尾魚組織生理毒性即：汞對na ~ + - k ~ + atpase活力的影響及硒的保護作用和汞和對劍尾魚組織超微結構的損傷等。以高氯酸?硝酸消化法和火焰原子吸收分光光度法測定了廣州市河涌沉積物和底棲生物中重金屬含量。 -
To reasonably plan out the scheme for the sewage discharge outlets of changshu fluorine chemical industry project, the article makes an ana lysis on the water environmental features of changshu section of the yangtze riv e, develops a plan two - dimensional model of coupled water flow - quality for its co mplicated underwater topography and stream flow - field. the model is relatively ac curate and practicable to predict the impact of scheme on water quality. varied s chemes have been compared and demonstrated from multiple angles, such as flow fie ld, impact assessment of water quality, technique and economy. the scheme of sewage discharge outlets away from the shore is recommended. the article provides a sci entific basis for the engineering design and envirommental management of the pro ject
為合理確定常熟氟化工項目排污口布置方案，本文在分析長江常熱段水環境特徵的基礎上，針對其復雜的水下地形和水流流場，建立了較為準確和實用的平面二維水流水質耦合數學模型，預測計算了三套方案污水對重點保護水域影響程度和范圍，並從水流流場、水質影響評價、技術經濟多角度對方案進行了比較論證，最終推薦污水江中排放的方案，為項目的工程設計和環境管理提供了科學依據。 -
The monitoring hydro - data of 8 sections from fudedian to zhaoquanhe along the main stream of liaohe river are collected and analyzed. the nemero indexes for the water pollution of liaohe river are calculated and illustrated in diagrams. the results show that the principals of the spatial - temporal cod level changes in the main stream of liaohe river. also, two obvious characteristics of cod pollution are found out : the absolute cod level is very high in this river ; the ratio of cod bod is significantly higher than average. and the phenomena are explained in detail in this paper from multiple aspects such as industrial point pollution, soil and water losses, municipal sewage, agricultural water pollution and etc, based on the relationship analysis between cod, ss and water quality parameters
對遼河幹流從福德店到趙圈河8個斷面的水質監測數據進行統計分析，計算得出遼河幹流水體污染的內梅羅指數，並以圖表形式揭示了遼河幹流cod時空變化的規律，總結出了遼河cod污染的兩個主要特點： 1 cod絕對值高2 cod bod相對比值也明顯偏高。通過對cod與ss cod與水質參數的相關性分析，從工業點源水土流失面源城市生活污水及農業用水等方面的污染解釋了上述特點。
分享友人