The membrane flux

The membrane flux decreases with the increase of the concentration of salting liquid .

随着盐溶液浓度增大，膜通量减小。

With intermittent operation and continuous aeration , the membrane flux was kept steady .

通过采用间歇运转、连续曝气，膜通量可保持稳定。

Study on mechanisms and impacts of aeration on the membrane flux in drinking water ultrafiltration membrane treatment

给水超滤膜系统中曝气对膜通量的影响及其机理研究

Moreover , membrane washing results indicated that NaOH and HNO_3 had better effect on the membrane flux .

另外，对污染膜的清洗研究表明，NaOH和HNO3溶液对于膜的恢复有很好的效果。

Under this condition , demulsification efficiency may achieve 39 % , the membrane flux recover coefficient is 33.0 % .

在该条件下，膜通量恢复系数为33.0%，即膜通量可以恢复至原始的33.0%，破乳率可以达到39.0%。

The membrane flux decreased as ultrafiltration time was prolonged and was unchangeable after 20 ~ 30 min.

随着超滤时间的延长，膜通量逐渐减小，超滤进行至20~30min后，膜通量趋于稳定；

Factors affecting the membrane flux were studied through the experiment made on a system of ultrasonic irradiation air-gap membrane distillation ( AGMD ) .

采用双向入流的圆形短管膜组件，并将超声激励技术用于膜蒸馏系统，以提高空气隙膜蒸馏通量。

A calculate model of the membrane flux is con ˉ cluded by analyzing and studying the materiel viscosity and filtration resistance .

通过对物料黏度和过滤阻力的试验研究与分析，得出了膜通量的计算模型。

It was found that the membrane flux decrease was accelerated with increasing Ca2 + concentration , humic acid concentration , ionic strength and decreasing pH value .

研究发现，料液中Ca2+的存在及其浓度的增加，腐殖酸浓度、离子强度的增大，料液pH值的减小都会加剧膜污染进程。

Increased pressure and temperature were helpful for improving the membrane flux , but the effect of the total of nickel , COD rejection rates and salt rejection were relatively little .

提高压力和温度，有利于提高膜通量，但对总镍、COD截留率及脱盐率的影响相对较小。

Flocculation by modified polyacrylamide , with concentration less than 5 mg / kg , will somewhat increased the membrane flux . Adding overmuch flocculants may cause adsorption fouling of membrane and result in decrease of flux .

采用5mg/kg以下的改性聚丙烯酰胺絮凝可以使膜通量有所提高，过多的絮凝剂会使膜产生吸附污染而降低通量。

The membrane flux can be recovered over 98 % after the fouled ultrafiltration membrane is treated by back flushing with treated water and flushing with dilute base , dilute acid , germicides ( such as NaClO ) and treated water .

分别用超滤水反冲洗、稀碱、稀酸、杀菌剂（如NaClO溶液）和清水冲洗被污染的超滤膜，可使膜通量恢复到新膜的98%以上；

When sole UF membrane system was used for treatment of tap water , the membrane flux lowered sharply , While as the pretreatment way of UF membrane process , PAC Can help UF membrane treat the same water quantity with obvious lengthening of UF membrane service period ;

单独用UF膜系统处理自来水时，膜的通量急剧下降，而PAC作为UF膜的预处理方式处理相同水量时，可以明显延长膜的运行周期；

The membrane permeate flux of the fouled system was restored to more than 90 % by chemical cleaning in 2h .

系统污染后的化学清洗只需2h，膜通量恢复90%以上。

Based on the original membrane flux model , the new ultrafiltration , reverse osmosis membrane flux model which can be used to simulate the changes of membrane flux with time was derived .

在原有膜通量模型的基础上推导了新的模拟超滤、反渗透膜通量随时间变化的模型。

After physical and chemical cleaning of membrane , the membrane specific flux for MCR and MBR is recovered respectively to 99.7 % and 76.9 % of pure water specific flux , and physical cleaning makes more contribution to it .

MCR和MBR的膜组件经物理、化学清洗后膜比通量分别恢复至新膜比通量的99.7%和76.9%，物理清洗对此的贡献较大。

The declining of membrane flux increased with the concentration of sludge .

膜通量的衰减程度随污泥浓度的增大而增大；

The decline of membrane flux

膜通量衰减

Membrane cleaning experiments have shown that the fouled membrane specific flux could be ultimately restored after chemical cleaning .

膜清洗实验表明，化学清洗能够恢复污染膜的比通量。

On the membrane , heat flux is very uniform and the temperature is evenly distributed , making the system error smaller than conventional structures .

在静态法的基础上，提出了一种用于薄膜热导率测量的新结构&桥状结构，这种结构热流和温度分布均匀，可减小测量误差。

During the experiment , membrane flux reduced significantly with the extension of the system run-time in the beginning , hereafter membrane flux became stable .

试验过程中膜通量随系统运行时间的延长在开始段有较大幅度的减小，随后膜通量趋于稳定。

No - effluent aerating were good for the comeback of membrane flux , but it is halfway .

空曝气对膜通量有一定的恢复作用，但不彻底；

The law of membrane flux attenuation is studied , and corresponding measures reducing the fouling are tried , such as no - effluent aeration , air and water backflush , chemical cleaning ;

研究了膜通量衰减规律，并尝试了空曝、反冲、化学清洗等不同的膜污染防治措施；

The results showed that membrane flux was determined by flow rate and the pressure .

表明膜通量的大小是由进料速率和操作压差共同作用的。

The change of membrane permeate flux with time and filtrated volume was investigated .

测定了膜通量随操作时间和滤液体积的变化情况。

The lowering range of membrane flux was smaller in the course of operation ( only 33 % );

运行过程中膜通量下降幅度较小（仅为33%）；

The unbalance problem of membrane flux in reverse osmosis ( RO ) system is put forward .

指出了反渗透膜系统膜通量失衡问题的严重性；

Under such optimum operating conditions , the changing situation of membrane flux , oil content and COD with time is studied .

在此合理的操作条件下研究了膜通量、含油量、COD随时间的变化情况。

Correlation analysis of experiment date was carried out first to discover the factors affecting the membrane flux and retain rate of essential oil .

首先通过对实验数据进行相关性分析，探索影响膜通量和截油率的主要因素。

Using dissolved - proliferation of models to explain the operation of pressure membrane flux , the law of change in the separation of functions . With the increase in operating pressure , membrane flux increases , the system for ion removal increases .

用溶解&扩散模型解释了操作压力对膜通量、分离性能的变化规律：随操作压力的增加，膜通量增大，系统对离子去除率增大。