查询词典 COD

And on the basis of mono-factor test, using COD decreasing rate and decolour rate as targets, six factors affecting catalytic effect were selected to proceed L9(34) orthogonal experiments. The conclusion of primary and secondary factors was drawn and the turn was : kind of catalyst-amount of catalyst-pH value-temperature-amount of H2O2-amount of air . The optimization were determined to be : initial pH value : 5.5 ; temperatare : 90 C; amount of H2O2: lml/400ml waste water ; kind of catalyst: AC3 ; inciting small amount of air ; amount of catalyst: 125g activated carbon to 500g stone .

并在单因素试验的基础上，以废液COD去除率和脱色率为指标，选择废液初始pH值、反应温度、启动剂用量、催化剂类型、鼓空气量、催化剂加入量为因素，进行L_9(3~4)正交试验，确定影响因素因素的主次关系为：催化剂类型→催化剂加入量→废液初始pH值→反应温度→启动剂量→鼓空气量；最佳处理技术条件为：废液初始pH5.5；反应温度90℃；启动剂量1ml／400ml废液；AC3型催化剂；鼓小流量空气；炭石比125g／500g。

Its test result, after using agent of sewage disposal of biology of carapace god ocean and technology of flood body rehabilitate, build good oxygen biology to stabilize a bed, processing sewage effect is apparent, expression is: Black smelly sewage is rapid decolour, deodorization, become clear, insipidity, the COD after handling two days by 333 drop 76, achieve view and admire water and the water quality demand that breed water, can develop aquatic substance. A green alga, red snapper grows to feed after 4 days wait for primary live thing, breed the water biology such as water hyacinth to be able to put in a suitable place to breed view and admire a fish.

其试验结果，运用甲壳神海洋生物污水处理(通过物化方法去除水中一些物质的过程)剂和大水体修复技术后，建立好氧生物稳定床，处理污水效果明显，表现为：黑臭的污水迅速脱色、脱臭，变得澄清、无味，处理两天后COD由333下降到76，达到观赏水和养殖水的水质要求，可培养水生物。4天后长出绿藻、红鱼食等初级生物，养殖水葫芦等水生物并可放养观赏鱼。

Ratio of COD removal and delignification was 66％ and 91％ respectively.

在此条件下，COD〓去除率为66％，木质素去除率为91％。

PAM can induce the formation of calcium oxalate dihydrate crystals and change the morphology of COD and calcium oxalate monohydrate crystals.

PAM可以诱导二水草酸钙晶体生成并改变COD和一水草酸钙晶体的形貌。

Experimental results indicate that the reduction of chemical oxygen demand were 40%, 38%, 12%, 50%, and 73% for β-naphtho1, salt R, dihydroxy salt R, acid red, and wastewater, respectively when the reactions had run for 4 h at a pH of 1.7. In comparison, the COD reduction of-naphtho1 and salt R were 10.2% and 16.2%, lower than 23.4% and 18.1% with H2O2, while the Fenton reaction time was 1 h.

当pH=1.7、反应4h时，β-萘酚、R盐、二羟基R盐、酸性红、实际废水的化学需氧量去除率分别可达40%、38%、12%、50%和73%；对比实验显示，反应时间为1h时，β-萘酚和R盐的COD去除率分别为10.2%和16.2%，而用H2O2则分别为23.4%和18.1%。

Phosphorized electrocoating wastewater from the automobile industry has very complex composition with high COD, and is poor in biodegradability.

汽车工业电泳磷化废水成分复杂、COD值高、可生化性差。

After immobilization, the biodegradation effect of UBD microorganism was improved significantly; the removal rate of COD and hydrocarbons was 75% and 90%, respectively, which was better than that of dissociative UBD microorganism and germfree cells.

菌种固定化后明显改善了炼油污水的处理效果，COD和石油类的去除率均高于游离菌和无菌小球。

Its value of BOD 5/COD fell to 0.19, moreover carbon and nitrogen was inversive, which brought much difficulty for anaerobically digested effluent to aerobically treatment.

猪场废水经过厌氧消化后，可生化性变差，BOD5/COD仅为0.19，并且碳、氮倒置，比例严重失调，给后续好氧处理带来很大困难。

Integrated ecosystem is made up with jussiaea stipulacea ohwi, bellamya purificata, algae and microorganism which attached on the porous concrete surface and is able to remove 95% TP, 75% TN and 75% COD.

试验表明：附着生长在多孔混凝土上的黄花水龙、杂藻、螺蛳以及微生物形成一个完整的微生态系统，6周后可使水体中TP的去除率均达到95%，TN的去除率达72.5%， COD去除率达到75%。

Based on the experiment, the reaction process occurs in garbage burying column and the influencing factor of recirculation effect have been discussed in this paper. Further discussion on the removal mechanism of COD and kjeldahl nitrogen in leachate has also been made.

在以上实验的基础上，本论文分析在渗滤液回灌过程中，尤其是好氧回灌过程中垃圾填埋柱中发生的反应过程和回灌效果的影响因素，并对渗滤液中COD和凯氏氮去除的机理做了进一步的探讨。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。