[讨论]今天中午收到杭州同学的来信
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">杭州同学的邮件如下：</span></b><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">你好：</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><br/></span><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">我是杭州的，搜索到</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><font face="Times New Roman">0513</font></span><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">装饰网，看到</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><font face="Times New Roman">05</font></span><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">年的一个滤水器的帖子，然后找到你的邮件地址。</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><br/></span><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">杭州很多小区里都有那种象电话亭那么大的净水设备出售过滤水，一大桶大概就三四块钱。但是那种水似乎并不象机器说明上的那么纯净，因为肉眼就可以看到水里有纤维，大概几毫米长。我问过那个公司，然后那边让技术人员来看，他也说不出个所以然，推测大概是</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><font face="Times New Roman">pp</font></span><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">。普通的自来水总是不太好，泥沙沉淀多，还有重金属啊什么的，但是这个过滤水居然也有纤维（装水的桶是干净的），不是二次污染吗。不知道这种</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><font face="Times New Roman">pp</font></span><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">成分对人体有没有害。</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><br/></span><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">盼望解答～</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><br/></span><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">谢谢！</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black;"><p></p></span></p>aTeastaEdait <p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">给杭州同学的回复</span></b><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">：</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">杭州的同学</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">:<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">你好</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">很高兴收到你的邮件</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">尤其是借助我们南通的装饰论坛能相互交流。虽然我在南通</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">还是能感觉到你对水的忧虑</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">.<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">杭州小区里的净水设备其实在上海也有</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">.</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">它的过滤核心件是反渗透膜</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">从技术角度来分析</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">这样的膜过滤其实是最干净的</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">.<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">你或许不相信</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">打个比方</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">:</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">宇航员长期在太空生存</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">是不可能携带大量水去的</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">那就采用反渗透膜来过滤小便</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">然后重复使用</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">.</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">另外医院里血液透析的核心件也是反渗透膜</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">.</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">电子厂里用到了高纯水基本全是反渗透膜过滤的</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">.<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">我了解那样的净水设备</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">正常情况下出水质量绝对没有问题</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">.</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">但是家里如果有老人和小孩，我并不建议多喝纯水，水中毫无营养，长期饮用，对身体不利。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">你说的情况我想说以下几点</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">:<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman"><span style="mso-spacerun: yes;"> </span>1</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">、</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">PP</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">棉是该过滤系统中的一部分，水中出现</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">PP</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">其实是反渗透膜后面的</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">PP</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">棉分散开来。这和</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">PP</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">棉的质量及更换周期有直接关系。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman"><span style="mso-spacerun: yes;"> </span>2</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">、</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">PP</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">棉其实类似于家里的棉絮，只是开孔紧凑。对人体是否有毒，也说不上。但是肉眼可见，喝了心理作用确实很大。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman"><span style="mso-spacerun: yes;"> </span>3</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">、自来水中的重金属含量正常情况下不会超标，除非采集水源地污染特别严重。因为重金属对人体伤害极大，有责任心的市政府会做好检测工作的。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><p><font face="Times New Roman"> </font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">这样的纯水设备，理论上来说出水是没问题的。更多的取决于服务商的良心。要知道，每多更换一次滤芯，就要多花费他一笔钱。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><p><font face="Times New Roman"> </font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="FONT-SIZE: 14pt;"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">希望我的解释你能清楚，也希望能和你有更多的交流。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p>
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