内循环活性污泥法工艺污水处理设施调试一例

介绍抗生素制药厂内循环活性污泥法工艺污水处理设施现场运行调试情况，指出污水调试中应注意的问题。     

Effect of free-air CO2 enrichment on nematode communities in a Chinese farmland ecosystem

At a rice-wheat rotational free-air CO2 enrichment(FACE) platform, the effect of elevated atmospheric CO2 on soil nematode communities in a farmland ecosystem was studied. Wheat plots were exposed to elevated atmospheric CO2 (ambient 370 μl/L 200 μl/L).32 families and 40 genera of nematode were observed in soil suspensions during the study period. Under FACE treatment, the numbers of total nematodes, bacterivores and fungivores exhibited an increasing trend. Because of the seasonal variation of soil temperature and moisture, the effect of elevated atmospheric CO2 on soil nematodes was only observed under favorable conditions. The response of nematode communities to elevated atmospheric CO2 may indicate the change of soil food web.     

焦化废水处理技术探讨

焦化废水以排放量大、成分复杂、污染物浓度高,难于降解而成为水处理领域的一大难题.A-O法处理焦化废水的工艺对于处理焦化废水具有明显的效果.     

脱氮除磷生物反应器内活性污泥性状的研究

报道了“中日湖泊水质富营养化控制研究项目”在贵州化肥厂建立的示范工程，使用两台脱氮除磷设备——BR型间歇曝气式脱氮除磷净化槽及BS型序批式脱氮除磷净化槽，对厂内生活区部分生活污水进行处理的情况。对该厂人均用水量大，排水水质有机物浓度低、碳氮比低的水质条件下反应器内活性污泥的稳定性、沉降性(SV30值的变化规律)及SV30值对设备运行的指导意义进行了初步研究。     

使用VB.NET绘制大气污染物浓度分布等值曲线

大气污染物浓度分布等值曲线的绘制是大气环境影响预测的一项重要工作.采用优化的黑白域矩形网格序列法,结合VB.NET环境下Metafile对象提供的矢量图形绘制新技术,可在一次数据扫描过程中同时实现黑白域划分、黑域边界提取、等值点拟合计算及序列化、等值线绘制等操作,计算量小、效率高、代码量少,可绘制任意浓度等值线,且等值线不相切.     

On-line optical determination of floc size of Fe(Ⅲ) coagulants

This study investigated the floc aggregation, average floc size, floc size variance and floc growth velocity when ferric chloride （FeCl3） and polyferric chloride （PFC） were used to treat the simulated water samples. The factors including coagulant dose, ionic strength and solution pH, which affect the floc aggregation, were studied. Experiments were carried out in a bench-scale reactor using photometric dispersion analyzer （ PDA）. Results showed that there were great differences between the floc aggregation of PFC and FeCl3. The average floc size and fioc growth velocity of PFC were much larger than those of FeCl3. Compared with FeCl3, PFC gave a better coagulation performance in wider range of pH, dosage and ionic strength. It was also found that the coagulation efficiency of PFC did not depend on average floc size but on floc growth velocity.     

强化淋溶对煤矸石理化性状的影响

通过柱状模拟实验研究不同粒径煤矸石在淋溶作用下其理化性状的变化规律，分别测定了煤矸石的物理特性、pH和硫酸根离子浓度等指标，揭示出不同粒径煤矸石中硫的淋溶行为规律，为煤矸石进一步微生物脱硫奠定基础。     

颗粒物浓度的影响因素及变化规律

分析可吸入颗粒物(PM10)的形成原因；结合莆田市实例探讨了气象条件和污染源分布对PM10浓度的影响；研究了PM10浓度的日变化规律和年变化规律。结果表明，气象条件和人类活动是决定PM10浓度时空变化的主要原因；PM10浓度的平均日变化规律呈现为典型的双峰双谷型，而年变化规律基本上与当地气候年变化规律相吻合。     

UASB系统中pH值与污泥浓度控制的探讨

介绍了啤酒生产废水处理工艺UASB系统,分析了pH值、污泥量对UASB系统的影响,并提出了保证出水水质达标的措施.