查询词典 wastewater

It is found that the critical temperature of facultative biodegradation in treatment of domestic wastewater is 13℃.

同传统生化反应一样，兼性生化工艺的处理效果也很大程度地受到温度的影响。

The aim of research was to study the effect of chaff xanthogenate on removal cuprum, zincum, nickel ions from wastewater.

［目的］制备并研究谷壳黄原酸盐对Cu(上标 2+)、Zn(上标 2+)和Ni(上标 2+)3种重金属离子的捕集效果。

A new method of handling cyanide wastewater produced in roasting-cyanidation process was proposed in the paper.

研究提出了一个焙烧—氰化工艺中含氰废水处理的新方法。

The wastewater from gum benzion production contains benzaldehyde, cyanide, gum benzoin and ethyl benzoate. When the cyanide is determined by isonicotinic acidpyrazalon method, the ethyl benzoate is distilled and goes into NaOH absorption liquid with cyanide in the process of predistillation, because its boiling point is low. Thus the absorption liquid produces a great deal of foam and feculence.

摘要］有机化工产品安息香生产废水中含有苯甲醛、氰化物、安息香和苯甲酸乙酯，在用异烟酸吡唑啉酮法对其进行氰化物测定时，由于油酯类的沸点较低，在预蒸馏过程中被蒸出和氰化物一起进入NaOH吸收液，使得吸收液产生大量泡沫和沉淀，严重干扰后续比色测定。

Deactivation and its reasons of supported TiO2 photocatalyst in degradation of printing and dyeing wastewater were investigated .

研究了负载型TiO2光催化剂在印染废水降解中的失活及其产生的原因。

High concentration nitric wastewater can realize stable nitrous nitrification by ANIS process (continually influence、intermittently decantation), the influence and decant volume of the reactor is only half of its volume.

4高浓度氨氮废水实现稳定亚硝化宜采用ANIS反应工艺，反应器每周期进、出水量仅为其反应容积的一半。

When treating difficult degraded organic dyeing wastewater, it can not only decolor but also reduce COD_ value.

在处理低浓度苯酚废水时，吸附速度较快，20分钟便可达到吸附平衡。

On the other hand, studies on application of chitosan to wastewater focus on limited fields such as decolor, removal of metal ions, and so on, most of which were carried out in the 1980s and 1990s.

国内外关于壳聚糖絮凝剂的制备研究较多，但大部分是采用传统的碱液法，成本高，而且耗时；对于恒功率微波法制备壳聚糖的研究相对较少，而对于变功率微波法制备壳聚糖的研究至今还未见有报导。

When the wastewater's COD was 1533 mg/L, the optimum pH value was 1.2, the dosage of chlorine dioxide was 1500 mg/L after reacting for 60 min and the COD removal efficiency and the decolor efficiency were 45.3% and 92.5%, respectively.

二氧化氯化学氧化处理COD为1 533mg/L的萘酚绿废水，在最佳pH值为1.2，二氧化氯投加量为1 500 mg/L，反应时间60 min条件下，COD去除率和脱色率分别为45.3%和92.5%。

The effect of anaerobic biological treatment on decoloration of dye wastewater was studied under the simulated experiment conditions.

模拟中温厌氧消化条件，对模拟染料废水的厌氧生物处理进行了研究。

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。