水净化

As a result, Oenanthe javanica is an economical and effective biological material for purification of heavily polluted river courses in winter-spring.

水芹菜是冬－春季节净化重污染河道的经济有效的生物材料。

Removal efficiency of nitrogen, phosphorus and N2O emission from domestic sewage in floating-bed system with Lolium mutliflorum, Oenanthe javanica and Vetiveria Zizanioides were investigated in greenhouse.

在温室内采用浮床无土栽培技术，研究了黑麦草、水芹和香根草3种植物对生活污水中N、P的去除效果及净化过程中N2O的排放特征。

The dynamic simulation test showed that, the removal rate of TN、 NH_3-N、TP of Oenanthe javanica floating-bed was positive correlated with water temperature. The average removal loading rate of TN and TP were 0.80g/m.~2·d and 0.11g/m~2·d, respectively. The inhibition on algae was steady and the average inhibition rate was 57.3%. We also got the best value of hydraulic loading rate, floating-bed coverage rate, water depth under dynamic polluted river. They were 1.0m~3/(m~2·d)、 30%、 30cm.

动态模拟试验表明：水芹菜浮床对动态污染河水中TN、NH_3-N、TP的去除率与水温正相关，TN的平均去除负荷为0.80g/m~2·d，TP的平均去除负荷为0.11g/m2~2·d，对藻类的抑制作用较为稳定，平均抑制率为57.3%；获得了对动态污染河水最佳净化效果时的水力负荷参数为1.0m~3/(m~2·d)、浮床覆盖率为30%、水深为30cm。

Three kinds of hydrophytes, Veliveria zizanioides Nash, Eichhornia crassipes, and Oenanthe javanica DC. were used to investigate enrichment ability of nitrogen and phosphor at the different TN levels with TP constant. It revealed the absorption ability of aquatic plants and purification ability of aquatic macrophytes-rhizosphere microorganisms system respectively in aquatic macrophytes-microorganism system for water purification.

研究了不同TN浓度下香根草、水葫芦、水芹等水生植物－微生物系统富集N、P的能力，揭示了水生植物－微生物系统中水生植物的吸收作用和根际微生物系统对净化水质的作用，对水生植物根际微生物系统相应微生物的数量做了定量的统计。

The purification effect of Oenanthe javanica,Lolium mutliflorum and Allium sativum on eutrophic water body was investigated under lower temperature condition in winter using soilless floating bed.

在冬季低温条件下，采用浮床无土栽培技术，研究了水芹菜、多花黑麦草以及大蒜3种耐寒植物对富营养化水体的净化效果。

Oenanthe javanica Lolium mutliflorum Allium sativum Winter Eutrophic water body Purification effect

水芹菜；多花黑麦草；大蒜；冬季；富营养化水体；净化效果

With retention time prolonged, the concentrations of TN, NH4(superscript +)-N and TP of domestic sewage were obviously reduced in all floating-bed systems, however the NO4(superscript +)-N concentrations were gradualjy accumulated due to the stronger nitrification than denitrification. The plants in floating-bed system increased significantly the N2O flux, which was 174.44μg/(m^2h), 82.19μg/(m^2h), 112. 49μg/(m^2h) and 44.81μg/(m^2h), respectively, for the Lolium mutliflorum, Oenanthe javanica, Vetiveria Zizanioides arid none-plant floating-bed systems.

净化周期内，浮床各系统的TN、NH4-N和TP浓度随着污水停留时间的延长直线下降，而NO3-N浓度却因系统内硝化强度大于反硝化强度而产生了累积；植物的存在明显的促进了浮床系统的N2O排放，浮床黑麦草、水芹、香根草和对照系统N2O的平均排放通量分别为174.44μg/， 82.19μg/， 112.49μg/和44.81μg。

The total aerobic plate counts for bacterial colonies, coliform and the microflora of the purified oyster by ozone were identificated. The oyster Ostrea plicatula were collected from the breeding base in Xidian, Ninghai county of Ningbo.

采集浙江省宁海县西店养殖的褶牡蛎去壳取肉，经过臭氧水杀菌净化处理后，对牡蛎体内细菌菌落总数、大肠菌群和细菌菌群组成进行了分析研究。

Flocculants in wastewater treatment has become increasingly widely used, in which high-performance composite coagulant in water treatment technology occupies an important position, to that end, research synthesis of a new type of high-performance composite PFS purificant PISC, and dying, coal washing, paper and municipal sewage and other industrial wastewater purification experiments confirmed that the water purification agent with the exception of turbidity, detreated reduce COD, BOD5 and SS functions.

在废水处理方面絮凝剂已越来越广泛地被应用，其中高效复合混凝剂在水处理技术中占有十分重要的地位，为此，研究合成了一种新型的高效复合聚铁净化剂PISC，并对印染、洗煤、造纸和城市污水等工业废水进行净化实验，证实该净水剂具有除浊、脱色、降低COD、BOD5及SS的功能。

Compared with other flocculants, the polymeric ferric sulfate has much better performance and characteristics, such as better adsorption, bridge erection, flocculation, floc formate fast, not easy to breaking, better repolymerization and weak corrosion. So it was widely used in the wastewater purification and treatment which contains industrial wastewater, urban sewage, water for industrial use and potable water etc.

与其它的絮凝剂相比较，聚合硫酸铁不但具有较强的吸附、架桥、絮凝沉淀性能，而且在水处理过程中有生成絮体速度快、絮体不易破碎、重聚性能好、腐蚀性小等特点，因此广泛用于工业废水、城市污水、工业用水以及生活饮用水等的净化处理。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。