FHSW-5使用说明书(2)

Brief technology flows are as follows:

seawate→lowpressure pump→multi-medium filter→fine filter→micro filter→high pressure

pump→reverse osmosis membran—dense water→outside

fresher water→ dense water

Substandard water

装置系统原理图如附1（装置系统原理图）。

device system theory drawing as attachment 1 (device system theory drawing).

2、 工作原理Working theory

反渗透海水淡化装置由预处理、反渗透二部分组成。预处理部分的目的是将海水处理成为达到反渗透膜进水要求的水。预处理采用“ 机械过滤器 + 精滤+微滤”结合的型式，能确保反渗透膜进水浊度 < 1 NTU，污染指数FI＜5 。

Reverse osmosis seawater desalination device is composed of pretreatment, and reverse osmosis, and rear treatment three parts. The aim of pretreatment part is to treat the seawater becoming the water reaching the requirement of entering water of reverse osmosis membrane. Pretreatment uses model of “force lift pump + multi medium filter + fine filter” combining, can ensure reverse osmosis membrane entering water turbidity <1 NTU, pollution index FI<5.

机械过滤器内装有两种滤料，上层为粒径为0.5—1mm 的石英砂，下层为粒径为1—2mm的细石英砂。它能将海水中很细的砂粒、尘土、藻类、胶体等颗粒物质过滤掉，确保其出水浊度 < 1 NTU 。多介质过滤器工作一段时间后，颗粒杂质凝聚在滤料表面，一定时间后需用大量的水反冲洗。

In the inside of multi-medium filter there are two filtration materials, upper layer is quartz sand of grain diameter 0.5~1mm, lower layer is quartz sand of grain diameter 1~2mm. It can filter out the very little grains of sand, soil, algae, glue, etc, ensure out water turbidity <1 NTU. After multi medium filter works a period of time, grain impurity condensed on filter matter surface, after a period of time must use a great deal of water to backwash.

精滤器和微滤器内装有10μ和5μ过滤滤芯，能进一步去除水中的胶体及细微的颗粒，确保污染指数 FI < 5 。

In fine filter and safety filter installed 10μm and 5μm filter core, can further remove glue and micro grain in the water, ensures pollution index FI<5.

反渗透部分由高压泵、缓冲器、反渗透膜、反渗透膜容器、清洗系统等组成。

Reverse osmosis part is composed of high-pressure pump; buffer; reverse osmosis membrane; membrane tank; wash system, … etc.

由于海水含盐量较高，如当海水含盐量为35000mg/l时，其渗透压为2.4～2.6Mpa，为克服渗透压及浓缩等因素，反渗透制造淡水需在高压下进行，工作压力一般在4.5～6.9Mpa范围内。高压泵选用

Changzhou Feihua Marine Machinery Co., Ltd. 5 Tel：0519-88602365 Fax：0519-88609065

为三柱塞往复泵，最高输出压力可达7.0 Mpa。

As a result of the higher salinity of sea water, such as when the sea water salinity for 35000mg / l, the osmotic pressure for the 2.4 ~ 2.6Mpa, to overcome the osmotic pressure and concentration and other factors, to create fresh water reverse osmosis to be carried out under high pressure, work pressure general in the range of 4.5～6.9Mpa. Selection of three high-pressure pump plunger reciprocating pump, the maximum output pressure up to 7.0 Mpa.

反渗透膜选用美国DOW公司的卷式复合膜，型号为SW30-2540，数量4支。该膜最低脱盐率达99.5%，耐压7.0Mpa。

Selection of reverse osmosis membrane to DOW company's of the United States roll composite membrane, model SW30-2540, the number of four. The rate of membrane desalination minimum 99.5%, Pressure 7.0Mpa.

反渗透膜需安装在压力容器内。材料为玻璃钢（FRP），完全能耐海水腐蚀，四支压力容器内各装1支反渗透膜进行串联连接，可提高装置水利用率。

Reverse osmosis membrane to be installed in the pressure container. Material for glass fiber reinforced plastic (FRP), full capability of sea water corrosion, four pressure vessels containing one reverse osmosis membranes, using three stage bis way to improve water utilization devices.

淡水经盐量计检测如达到标准，即可向系统外供应淡水，如达不到标准，即进入排放管路排入大海。

The fresh water through the check if reached standard, may provide fresh water outside the system, if not reached standard, drains to the sea through draining pipe.

由于反渗透过程是一种浓缩的过程，因此反渗透膜表面的污染是不可避免的。当反渗透设备的性能下降（具体表现为产水量下降，产水含盐量上升，膜压差上升）时，即需对反渗透膜进行化学清洗。在化学清洗箱内配制一定浓度的化学药品，切换相应的阀门，启动高压泵，即可对反渗透膜进行循环化学清洗。

Owing to the reverse osmosis process is a concentrating process, so the pollution of reverse osmosis membrane surface cannot be avoided. When reverse osmosis equipment performance descends (concretely show production water drop, production water saltness raise, membrane pressure difference raise), must carry on chemical wash to the reverse osmosis membrane. Make up chemical medication of fixed density if the chemical wash box, replace relevant valve, start high pressure pump, may carry on circulated chemical wash to the reverse osmosis membrane.

3、 电气控制Electric control

本自动化系统中，程序的任务主要是针对于预处理系统、反渗透系统及其他辅助系统程序控制。

Changzhou Feihua Marine Machinery Co., Ltd. 6 Tel：0519-88602365 Fax：0519-88609065

The automated system, the procedures for the task is targeted mainly at the pretreatment system, reverse osmosis systems, post-processing systems and other supporting process control system,

系统功能控制各类泵来实现各台装置的运行﹑停机﹑系统故障报警。以完成对预处理系统、反渗透系统的启动、停运及监测保护等控制功能。

System controler process control all types of pumps to achieve the every devices running ﹑ stops ﹑ alarm system failure. To complete the pretreatment system, reverse osmosis systems start-up, decommissioning and monitoring the protection of control.

另外，通过仪器仪表实现整个系统工艺参数指示、报警。并对系统实现运 …… 此处隐藏：7098字，全部文档内容请下载后查看。喜欢就下载吧 ……