Question

帮忙翻译一下，谢谢啦！

The line pressure, transmembrane pressure,
cross-flow velocity and temperature were measured
as indicated in Fig. 1 and recorded on a computer.
The desired cross-flow velocity and transmembrane
pressure were achieved by adjusting the pump speed
and control valve.
The feed solution was prepared as detailed in Section
2.1. Thorough mixing and temperature equilibration
were provided by positioning the two way valve
to allow flow through the by-pass loop for 30 min prior
to filtration. During this time the pH was adjusted to
4.2 by adding citric acid solution to the feed tank. At
the onset of filtration, the two way valve was turned
to divert flow through the membrane module and data
logging was initiated simultaneously. Permeate was
continuously recycled to the feed tank.
The permeate flow rate was measured by opening
the permeate collection valve and collecting the permeate
in a measuring cylinder for a set time, ensuring
first that the permeate return line was empty. The permeate
samples were collected in screw top glass jars
by opening the permeate collection valve and were
then refrigerated prior to analysis.
2.3. Analytical

Answer 1

管线压力、膜压力,
错流速度和温度测量
在图1所示,记录在电脑。
速度和过滤所需的错
通过调整压力泵转速
与控制阀。
饲料溶液中如详细
2.1。完全混合和温度求
通过定位提供了两道阀吗
允许通过旁路环路前30分钟
对过滤。在这段时间里的pH值被调整
42加入柠檬酸溶液的饲料槽。,
发作的过滤,这两道阀
转移流过膜组件和数据
测井发起。渗透是
不断循环的饲料槽。
蒸馏流量测量开幕
阀门的渗透收集和收集的渗透
在测量缸是固定的,保证
首先,渗透返回线是空的。蒸馏
样本螺旋顶级玻璃瓶
通过开启阀门、渗透收藏
然后冷藏分析之前。
23。分析