NF 纳滤系统 设计工具
一款专业的纳滤物料平衡工具,独立追踪一价(盐分)与二价(硬度)离子的脱除率,支持单段或多段(最多3段)配置,可选4、8、16英寸膜元件规格。可对井水软化、地表水软化与结垢控制等应用建模净驱动压力、产水水质与成品水硬度,并内置求解器,可反算达到目标成品硬度所需的旁通掺混流量。
该工具正在开发中
我们的工程团队正在积极设计与搭建该计算器的核心算法。
希望在工具上线时收到通知,或需要更早获取估算结果?欢迎联系我们的团队。
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导出功能
- 专业 PDF 工程报告
- 完整物料平衡与双重脱除率分析
- 公制 / 英制单位换算
- 井水、地表水与结垢控制预设
NF System Designer
Nanofiltration mass-balance with selective monovalent/divalent (hardness) rejection tracking, up to 3-stage arrays, membrane-aging projection, and product-water blending — including a solver for the bypass flow needed to hit a target finished hardness.
2- and 3-stage arrays feed each stage from the prior stage's concentrate, raising overall system recovery beyond what a single stage can reach — standard for hitting the 80-90% system recoveries common in NF softening.
Re-pressurizes Stage 1's concentrate before it enters Stage 2, independent of the main feed pump — useful when this stage would otherwise run short on net driving pressure, especially at high recovery or aged-membrane conditions.
Re-pressurizes Stage 2's concentrate before it enters Stage 3, independent of the main feed pump.
Defaults follow the selected application type; edit for a specific project. The "Aged" condition (toggle top-right) projects permeate TDS/hardness and required feed pressure at end of the stated membrane age — both monovalent and divalent passage increase by the same compounding rate.
Raw/pretreated water blended directly into the final product stream — the standard NF softening lever for hitting a target finished hardness economically without over-designing rejection. Leave flow at 0 to disable.
Back-solves the bypass flow (at current membrane-train performance, using the on-screen Day-1/Aged condition) needed to blend the membrane permeate up to a target finished hardness. Only valid for a target strictly between the membrane's own permeate hardness and the raw feed hardness.
| Stage | Elements | Recovery | NDP | Flux | Mono. Rej. | Div. Rej. | Perm. Flow | Perm. TDS | Perm. Hardness | Conc. TDS | Conc. Hardness |
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该计算器的操作界面目前仅提供英文版本。
工程方法说明
物料平衡与通量计算采用基于回收率的标准形式(Qp = Qf·Y),净驱动压力由进水压力减去浓水侧压降与该段膜壳侧对数平均渗透压得出。
一价与二价盐透过率分别相对膜元件的台架测试基准条件进行温度与通量归一化处理,体现纳滤区别于反渗透均一脱盐率的选择性脱除特性。
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