污染负荷
- 网络pollution load;COD
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区域地表水面源污染负荷的GIS计算方法研究
The Research on GIS Computing Technology of Regional Surface Non-point Pollution Load
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根据研究区域GIS数据信息及实地踏勘信息,借鉴国内外相关研究的模型模拟参数,在对研究区域进行概化的基础上,建立研究区域的非点源污染负荷模型。
On the base of data from GIS and survey of study area on the spot , non-point source pollution load model of study area was constructed .
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小流域N、P污染负荷的构成比重研究
The pollution of nitrogen and phosphor constitute at small watershed
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中国畜禽养殖结构及其粪便N污染负荷特征分析
Structure of Livestock and Variation of Fecal Nitrogen Pollution Load in China
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基于MonteCarlo法的城市雨水径流污染负荷模拟
Simulation of Urban Storm Runoff Pollution Load Based on Monte Carlo Method
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一是粉尘,CO2,SO2,NOx排放及噪声污染负荷。
And emission of dust , CO2 , SO2 , and NOx and the noise pollution .
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利用地理信息系统(GIS)在空间数据输入与处理方面的优势,分析了渭河流域污染负荷分布特征,计算了渭河流域各地区污染负荷量,并建立了空间与属性数据相统一的地理信息数据库。
With the help of GIS , the geo-database is established , the distribution of pollution load is described and the value of pollution load in every region is calculated .
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在此基础上,采用排污系数法和单位面积污染负荷法分别计算出各汇水区农村生活污水、畜禽养殖、农田和村镇建设用地降雨径流的COD排放量。
Consequently , COD discharges from household wastewater , livestock cultivation and the runoff from farmland and construction land were estimated using discharge coefficient and unit-area load approaches .
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总磷(TP)所占的污染负荷指数最大(34.34%~54.34%),平均污染指数为48.36%。
Total phosphorus ( TP ) shared the largest pollution load index ( 34.34 % ~ 54.34 % ), the average pollution index for 48.36 % .
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再生纸行业尽管污染负荷大大降低,但排放废水中COD、BOD含量仍较高。
In spite of greatly reduced pollution load in recycled paper industry , the content of COD and BOD is yet higher in the wastewater .
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流域颗粒态N、P污染负荷估算是由USLE方程得到流域土壤流失量(土壤侵蚀模数),然后由颗粒态N、P输出模型计算得出。
Pollution loading of particle N and P in ChaoHu lake watershed could be evaluated through export model of N and P after annual soil eroding volume was work out according to USLE equation .
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造纸黑液在pH值小于3.5时能够大量析出木质素,可以大幅降低后续处理黑液的污染负荷。
Black liquor of paper making can separate out a great deal lignin when pH is less than 3.5 , and the pollution load of black liquor in the successive disposal stage could be reduced sharply .
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脱墨废水COD值较低,对环境的污染负荷较少,降低废水处理成本;
The cost is reduced , the COD of waste water is lower , the cost to deal with the waste water is decreased and be friendly to the environment ;
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贝叶斯规整化BPNN定量流域非点源污染负荷研究
Modeling Changes of Non-point Source Pollution Load for Watershed Using Bayesian Regularized BP Neural Network
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结果表明,2000年珠江口生物体主要残留物为As、Cd、Pb,其污染负荷比分别为36.8%、25.6%和19.8%;
The analysis results show that the main residues in the animal muscles are As , Cd and Pb with the pollution duty ratios of 36.8 % , 25.6 % and 19.8 % , respectively .
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结果表明,对该湾主要污染物(石油类、COD)进行污染负荷总量控制,即可满足该湾的使用功能。
It was shown that once the monitoring control of the major pollutants ( oil and COD ) discharged into the bay was excised , the functional zoning target of the bay would be reached .
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滇池流域环境管理项目主要是针对控制或削减磷的入湖负荷及其它如COD、BOD、悬浮物、氮等污染负荷而设置的。
The Dianchi basin environment management project aims at controlling or reducing the load of phosphorous into lake and the pollution load of COD , BOD , suspended matter and Nitrogen .
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通过强化预处理对SS和P的去除削减污染负荷,使湿地水力负荷提高到0.6m3/(m2·d);
SS and P were removed in pretreatment , and which also greatly reduce pollutant load on wetland , then increasing the HLR of wetland to 0.6 m ~ 3 / ( m ~ 2 · d ) .
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本文的主要研究内容和结论有以下几个方面:(1)种植业用地的TN、TP非点源污染负荷比例均占总负荷50%强。
The main conclusions of this article are listed as follows : ( 1 ) Crop production lands ' TN and TP nonpoint source pollution occupies 50 % of the total pollutions .
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等标污染负荷率COD、TN和TP分别为6.67%、60.78%和32.55%,说明江苏省水环境受农业氮的污染较为严重;
The equivalent standard pollution loading rate of COD , TN and TP was separately 6.67 % , 60.78 % and 32.55 % , which indicated that the water was polluted seriously by nitrogen .
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探讨了落叶松KP浆ClO2漂白废水的特性,测定了废水的污染负荷,并与常规三段漂(CEH)进行比较,进一步确认ClO2的漂白优势。
The properties of chlorine dioxide bleaching effluents of larch kraft pulp has been studied and are compared with CEH sequence .
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降雨量与潜在蒸散量系统误差对非点源污染负荷的影响具有相似性,均是泥沙不确定性最大,然后依次是TP负荷、河流流量和TN负荷。
Rainfall and potential evapotranspiration system error on non-point source pollution load of a similar nature are the greatest uncertainties in the sand , followed by TP load , river flow and TN load .
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在雨季,这些田地中的地表径流中就会带有大量的营养元素(N、P、K等)进入入滇河道,最终排入滇池,成为滇池入湖污染负荷的第二大污染源。
In rainy seasons , a lot of nutrients ( N , P , K , and so on ) enter rivers from those fields through surface runoff , and get into Dian Lake at last , making agricultural pollution the second largest pollution source of Dian Lake .
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概述了碱性H2O2化学机械浆(APMP)的研究现状,包括碱性H2O2预处理与纸张物理性能、纸浆筛分与纤维形态特性、APMP制浆污染负荷及防治措施等。
In this overview , the influence of alkaline peroxide pretreatment on fiber morphological property and pulp physical properties , the pollutant load produced and its abatement / treatment measurements are presented .
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6-10月的非点源COD、氨氮、总N、总P污染负荷入河量分别占全年非点源同类污染物入河量的54.66%、44.52%、73.26%、50.28%。
6 ~ 10 months of non-point sources of COD , ammonia nitrogen , TN , TP amount of pollution load into the river throughout the year accounted for non-point source pollutants into the river separated by 54.66 % , 44.52 % , 73.26 % , 50.28 % .
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根据近10a监测数据,总氮的点源污染负荷占51%,非点源占49%;
According to the monitoring results over the past 10 years , 51 % of total N came from point sources and 49 % from non point sources .
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网下水的颜色会变浅,废水浓度、SS、COD大幅度下降,可降低废水污染负荷,有利于环境保护。
The color of the white water will become light greatly , the waste strength , SS and COD will become greatly lower , it can low down the pollution load of the waster water , and benefit to the circumstance protection .
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研究表明,密云水库流域由于人类活动影响而产生的TN、TP污染负荷占流域总污染负荷的1/3左右,其余的污染负荷是土壤背景值产生的,与土地利用有关。
The study shows that one third of the total TN and TP load are produced by the human activity in the Miyun Reservoir basin , and other pollution load was produced by the soil background value which is related to landuse .
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爆破浆的污染负荷与CTMP浆相当,但明显小于半化学浆的污染负荷,是一种低污染的高得率制浆新方法。
The SEP was a lower pollution pulping technology , and its pollution load was approached to the CTMP technology , but its pollution load was lower remarkably than the Semichemical Pulping technology .
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研究表明,中国的畜禽粪便N污染负荷呈现由西北内陆向东南沿海逐渐加重的趋势,可以400mm等降水量线为界分为高污染负荷区和低污染负荷区。
The nitrogen pollution load of livestock was increasing gradually from the northwest to the southeast , and could be divided into relative higher and lower parts , in line with the boundary of 400 mm rainfall of China .