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XX超滤项目UHS系统设计说明系统设计概述超滤膜系统设计采用旭化成公司的Microza UHS-620A 浸没式超滤膜组件，膜丝为采用热致相分离法制备的均质高维网状结构聚偏氟乙烯（PVDF），具有化学稳定性好（可耐有效氯5000mg/L）、机械强度高、产水水量稳定、产水水质稳定等优良特征。
超滤膜系统为全自动运行模式，包括过滤、液位下降过滤、反洗/气洗、排放、填充、EFM清洗、CIP清洗和在线完整性检测等运行程序，基本流程如图1所示。
整个超滤系统主要由进水泵、自清洗过滤器、膜池、过滤泵、反冲洗系统、化学清洗CIP/EFM 系统、在线膜完整性检测系统、仪表空压机系统、配套的手动/自动阀门、在线各类仪表和控制检测元器件、PLC计算机控制系统以及必要的设备附件组成。
图1 流程图Microza UHS-620A浸没式膜组件是旭化成专门针对高浊度原水所开发的产品，标准运行模式（如图2所示）为：｛过滤（15~30min）→液面下降过滤（液位控制）→反洗/空气擦洗（60s）｝n→排放→充填，大括号中的操作模式为一个小周期，通常运行1-5个小周期后，再将浸没槽中的水全部排放，由此形成一个大周期；UHS系统每1-7天进行1次低浓度化学清洗（EFM）过程，清洗时间为30~90min；每1-6月进行1次高浓度化学清洗（CIP）过程，清洗时间为6-8小时。
进水温度为0~40deg.C时，系统运行跨膜压差（TMP）通常在15~80kPa之间，EFM 清洗后TMP可下降20-40kPa，相应的通量恢复率可达60%-90%；当TMP达到60~80kPa时，系统就需进行CIP清洗，清洗后的TMP可下降至20~70kPa左右，相应的通量恢复率在95%以上。
图2 标准运行程序根据现场现有条件及进水水质，本项目UHS系统设计水温为5deg.C时的运行通量设计为94.0LMH，平均净产水通量为79.4LMH，系统回收率为96.8%。
设计每个小周期为1820s，其中过滤和液位下降过滤1760s，反洗/空气擦洗60s，每运行5个小周期，进行一次300s的排放和填充，即一个大周期的运行时间为157分钟，EFM（次氯酸钠）每天进行一次，CIP每3个月或当跨膜压差达到60kPa时进行一次。
浸没式(EUF)超滤膜产品使用说明书〔2021版〕碧水源膜科技XX目录第一章公司简介1第二章浸没式超滤膜简介22.1 别离原理22.2 应用领域22.3 产品特点2第三章浸没式EUF帘式膜组器简介33.1 产品结构33.1.1 结构组成33.1.2 主要部件说明43.2 产品特点63.3 浸没式EUF帘式膜组器规格7第四章浸没式EUF帘式膜组器应用设计指南84.1 进水条件84.2 膜池内的膜组器布置94.2.1 膜池的总体布置94.2.2 膜池廊道布置94.3 化学清洗系统94.3.1 在线化学清洗装置94.3.2 离线化学清洗10第五章浸没式EUF帘式膜组器安装指南105.1 准备条件〔用户自行准备〕105.1.1 工具与设备准备105.1.2 场地准备105.2 安装步骤115.2.1 膜池清污与管路冲洗115.2.2膜池预先蓄水115.2.3 一般检查115.2.4 开箱检查115.2.5 安装过程125.2.6 膜组器的下水安装13第六章浸没式EUF帘式膜组器的运行使用指南146.1 概述146.1.1 运行条件146.1.2 考前须知146.2 调试156.2.1 清水试车156.2.2 正常运行156.3 膜清洗156.3.1 在线化学清洗〔CIP〕166.3.2 离线化学清洗166.3.3 平安考前须知17第七章膜组件、膜组器的保存和运输187.1 膜组件的保存187.1.1 未开封〔未使用〕膜组件187.1.2 使用过的膜组件187.2 膜组件的运输187.3 膜组器的保存和运输19第八章故障与排除方法198.1 停止运行后再次启动198.2 风量198.3 水量减少与负压升高198.4 出水浊度升高198.5 故障组器确实定与检查198.5.1 故障组器确实定198.5.2 故障组器的检查208.5.3 组器故障处理20第九章特别考前须知21售后效劳维护记录表21附表1 EUF膜组器定期现场检查维修记录表22附表2 日常运行记录表24附表4 膜在线化学清洗记录表26附表5 膜离线化学清洗记录表编号26警示信息与其含义本说明书中使用的警示信息十分重要，请正确理解其含义，并给予足够的重视：表示如果无视本指示错误地使用装置的话，预计可能会发生人身死亡或重伤。
浸没式超滤膜控制流程英文回答：Immersed ultrafiltration membrane control process.The control process of immersed ultrafiltration membrane is crucial for ensuring the efficient and stable operation of the system. In this process, various parameters and variables need to be monitored and adjusted to optimize the filtration performance.One of the key control parameters is the transmembrane pressure (TMP), which refers to the pressure difference across the membrane. Maintaining a stable TMP is essential to prevent membrane fouling and ensure the consistent permeate quality. Typically, the TMP is controlled by adjusting the feed flow rate and the permeate flow rate. If the TMP exceeds the specified limit, it may indicatefouling or other issues, and appropriate actions should be taken to mitigate the problem.Another important control parameter is the backwash process. Periodic backwashing is necessary to remove accumulated solids and debris from the membrane surface, which can improve the filtration efficiency and prolong the membrane lifespan. The backwash process can be controlled based on time intervals or triggered by specific conditions, such as a certain increase in TMP or a decrease in permeate flux. Once the backwash is initiated, the system will automatically adjust the flow rates and pressures to ensure effective cleaning.In addition to these control parameters, monitoring the feed water quality is also crucial. Parameters such as turbidity, suspended solids, and organic matter concentration should be continuously monitored to detectany changes or deviations. If the water quality deteriorates, it may affect the membrane performance and require adjustments in the control process. For example, if the turbidity exceeds the specified limit, a higher backwash frequency or longer duration may be required to maintain the membrane performance.Furthermore, the control process should also consider the energy consumption and cost-effectiveness. Byoptimizing the operating conditions, such as the feed flow rate, backwash frequency, and chemical dosage, the energy consumption can be minimized while maintaining the desired filtration performance. This requires a balance between the operational costs and the desired water quality.In summary, the control process of immersedultrafiltration membrane involves monitoring and adjusting parameters such as transmembrane pressure, backwash process, and feed water quality. By maintaining a stable TMP, performing regular backwashing, and optimizing theoperating conditions, the system can achieve efficient and reliable filtration performance.中文回答：浸没式超滤膜的控制流程。
