查询词典 wastewater

Water quality indexes in the course of ammoniation reaction was analysed to provide theoretical guiding for the biological denitrification of meat processing wastewater .

采用ABR工艺对肉类加工废水进行前期氨化处理，通过试验得到最佳水力停留时间为6～8h，氨氮递增率在90%～196%之间；同时发现了厌氧氨氧化这一新现象；最后对氮素、pH等水质指标在氨化反应过程中的的转化规律进行了分析，以期为肉类加工废水的生物脱氮处理工艺提供一定的理论指导。

It was discovered that when optimal HRT for anaerobic ammoniation of slaughter wastewater was 6～8h,NH3-N net increasing rate ranged within 90%～196%;the anaerobic ammoniation was in the form of the first class reaction;according to this,the present authors first e.

试验发现，屠宰加工废水厌氧氨化最佳水力停留时间为6～8h，NH3-N净增加率在90%～196%之间。

Adjusting pH to 12, air-liquid ratio to the range of 3 000～4 000 and temperature to the range of 35～45℃, after the washing wastewater from deposited ammonium carbonate that the initial concentration of ammonia nitrogen was 1 570 mg/L was treated by ammonia stripping, the residual concentration of ammonia nitrogen was controlled to below 100 mg/L and removal efficiency reached to over 94%.

发现pH、温度和气液比是氨氮去除效率高低的关键因素，废水初始浓度对去除率无影响。调节废水pH=12，气液比在3 000~4 000，温度在35~45℃范围，浓度为1 570 mg/L的碳铵沉淀洗涤废水经氨吹脱处理可使出水残余氨氮浓度控制在100 mg/L以下，去除率达94%以上。

The feasibility of the treatment of phosphate wastewater and landfill leachate by magnesium ammonium phosphate process are discussed.

探讨了磷酸铵镁法综合处理磷酸盐工业废水和垃圾渗滤液的可行性。

The feasibility of the treatment of phosphate wastewater by the magnesium ammonium phosphate precipitation process was discussed.

探讨了磷酸铵镁沉淀法处理磷酸盐工业废水的可行性。

Using magnesium salt as a precipitant in the treatment of wastewater containing phosphate and ammonium can remove both of them resulting in the formation of magnesium ammonium phosphate.

利用镁盐和废水中的氮、磷生成白色的磷酸铵镁沉淀，可以实现废水中氮磷的脱除。

College of Science, Chongqing Jiaotong UniversityThe feasibility of the treatment of phosphate wastewater by the magnesium ammonium phosphate precipitation process was discussed.

探讨了磷酸铵镁沉淀法处理磷酸盐工业废水的可行性。

Key word :wastewater treatment;magnesium ammonium phosphate;chemical precopitation;removal of ammonium and phosphate

向含NH4+和PO43-的废水中添加镁盐，发生的主要化学反应如下

When the concentration of metamorphic amylum production wastewater in the experiment was 12 640 mg/L and the optimal hydraulic retention time was 48 h, the removal efficiency of COD was 85.9%.

试验用变性淀粉废水的COD浓度为12 640 mg/L，最佳HRT为48 h，此时COD去除率85.9％。

Strain MD-9 is facultative anaerobe bacillus.Glucose fermentation is heterologous.Strain MD-9 can use molasses wastewater to produce lactic acid.

利用富含碳水化合物的有机废弃物发酵生产乳酸这种多用途的化工产品，可以解决废弃物的资源化问题，同时还能够降低乳酸的生产成本

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。