(5)CIP Tank Fill – the CIP tank is filled from one of the un

(5)
CIP Tank Fill – the CIP tank is filled from one of the units in operation.
CIP Tank Heating – for acid CIPs,the water in the CIP tank is heated to 40 °C.
Backwash - The skid is backwashed to remove excess solids and maximize the chemical cleaning efficiency.The backwash waste is drained to the regular waste outlet.
Hot water Fill - The skid is filled with water from the CIP tank.
Filtrate Recirculation and Chemical Dosing - The CIP transfer/recirculation pump starts to recirculate the water to the skid in a closed loop.The skid is fully isolated from the rest of the system,typically by block and bleed systems.The acid or chlorine (sodium hypochlorite) is added in the loop at the beginning of the recirculation sequence until the appropriate quantity of cleaning chemical is added.
Filtrate Recirculation – The cleaning solution is recirculated through the filtrate side of the membrane array.This step is similar to filtration.
Soak/Aeration - The modules are left to soak for a preset time.With an acid clean,repeated aeration steps can be used to improve cleaning efficiency.
Draindown - The cleaning solution is drained away from the skid to drain or to the neutralization system if the system incorporates one.
Rinse Backwash - The skid is refilled with feed water and backwashed to remove residual chemical.All rinse water is directed to drain or the neutralization system.
Filtration to Waste – The unit is put into filtration but the filtrate with chemical residue is sent to drain or the neutralization system.The pH and ORP meters are used to verify that the skids have been rinsed to the point where the filtrate has no chemical cleaning residue.The unit can then be put back into filtration or standby.
Pressure Decay Test (PDT)
The integrity test procedure is similar to that used on all of the other Memcor systems.The principal process steps include draining down the lumen of the fibers,pressurizing the inside of the module fibers with integrity air while the upper backwash waste outlet valve is open to atmospheric pressure,shutting down the air supply and monitoring the pressure over time using the filtrate pressure transmitter supplied with each unit.
The PDT result is logged on the SCADA system and displayed on the SCADA computer as well as the optional local HMI.This result is used to calculate the Log Removal Value (LRV),which confirms integrity of the system.Each Memcor CP unit is tested at regular time interval adjustable by the operator.The time interval is set at 24 hours by default.

很抱歉,找了半天也不知道skid的意思,不能简单理解成“滑动”等.
原位清洗水箱填充–原位清洗水箱由其中一个操作单元来填充.
原位清洗水箱加热–对于原位酸清洗,原位清洗水箱中的水被加热到40 °C.
反冲洗 - skid 反冲洗的目的是清除多余的固体并使化学清洗效率最大化.反冲洗废液流向标准废液出口.
热水填充- skid使用原位清洗水箱中的水来填充.
过滤再循环和化学计量-开启原位清洗转换/ 再循环泵使水在一个封闭式回流设备中再循环到skid 中.skid 和系统的其他部分是由典型的阻塞-排放系统完全隔离的.酸或者氯化物(次氯酸钠) 在再循环步骤开始时加入封闭式回流设备中,直到添加够适量的清洗化学品.
过滤再循环 –清洗液通过膜阵列的过滤侧再循环,该步骤和过滤相似.
浸泡/气动洗涤- 膜组件在预设时间内浸泡.在酸洗中,多次重复的气动洗涤步骤可用来提高清洗效率.
排空单元 -清洗液从skid上排出放空或进入中和系统（如果系统配置这一设备的话）.
反冲洗淋洗单元 - skid 再次充满给水并且反冲洗来除去残留的化合物.所有淋洗液直接排空或进入中和系统.
废液过滤 – 该单元放入过滤单元中,但带有化学残渣的过滤物直接排空或进入中和系统.酸度计和氧化还原计用于检验skids是否已经被淋洗到过滤物没有化学清洗残渣的终点.然后该单元可以返回过滤或待机状态.
压力衰减测试
完整性测试步骤和所有其他Memcor系统类似.重要工艺步骤包括排空纤维内腔、用全组分的空气加压到膜组件纤维内部、打开上位反冲洗废液出口阀连通大气、切断空气供应并隔一段时间用每个单元上装配的过滤压力变送器监控气压.
压力衰减测试的结果输入数据采集与监控系统并显示在数据采集与监控计算机和可选择的本地人机界面上.这个结果用于计算衰减对数值该值可验证系统的完整性.每个Memcor CP单元在由操作者调节的一定时间间隔内测试,时间间隔缺省设置为24小时.