臭氧在小区供水的工艺

zhankuno3

<p class="MsoNormal" style="margin-left:5.25pt;text-indent:21.0pt"><span lang="EN-US">20</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">世纪</span><span lang="EN-US">90</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">年代起，由于怀疑水中的有机物和天然物质与氯发生反应形成的三卤甲烷具有致癌性，美国、日本和英国等国家也逐渐对臭氧在水处理中的应用产生了兴趣，并逐步在一些饮用水处理系统中采用或增设了臭氧处理工艺。由于展坤臭氧比氯有较高的氧化电位，因此它比氯消毒具有更强的杀菌作用。对细菌的作用也比氯快，消耗量明显较小，且在很大程度上不受</span><span lang="EN-US">PH</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">的影响。有关资料报道，在</span><span lang="EN-US">0.45mg/L</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">臭氧作用下，经过</span><span lang="EN-US">2min</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">，脊髓灰质炎病毒即死亡；如用氯消毒，则剂量为</span><span lang="EN-US">2mg/L</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">时需经过</span><span lang="EN-US">3h</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">。当</span><span lang="EN-US">1mL</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">水中含有</span><span lang="EN-US">274~325</span><span style="font-family:宋体;mso-ascii-font-family:
Calibri;mso-hansi-font-family:Calibri">个大肠菌，在臭氧剂量为</span><span lang="EN-US">1mg/L</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">时可降低在肠菌数</span><span lang="EN-US">86%</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">；剂量为</span><span lang="EN-US">2mg/L</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">时，水几乎可以完全被消毒。较之传统的氯消毒方法，臭氧消毒还有如下优点：</span></p>

<p class="MsoNormal" style="margin-left:5.25pt;text-indent:21.0pt"><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">（</span><span lang="EN-US">1</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">）</span> <span style="font-family:宋体;mso-ascii-font-family:
Calibri;mso-hansi-font-family:Calibri">消毒的同时可改善水的性质，且较少产生附加的化学物质污染。</span></p>

<p class="MsoNormal" style="margin-left:5.25pt;text-indent:21.0pt"><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">（</span><span lang="EN-US">2</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">）</span> <span style="font-family:宋体;mso-ascii-font-family:
Calibri;mso-hansi-font-family:Calibri">不会产生如氯酚那样的臭味。</span></p>

<p class="MsoNormal" style="margin-left:5.25pt;text-indent:21.0pt"><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">（</span><span lang="EN-US">3</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">）</span> <span style="font-family:宋体;mso-ascii-font-family:
Calibri;mso-hansi-font-family:Calibri">不会产生三卤甲烷等氯消毒的消毒副产物。</span></p>

<p class="MsoNormal" style="margin-left:5.25pt;text-indent:21.0pt"><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">（</span><span lang="EN-US">4</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">）</span> <span style="font-family:宋体;mso-ascii-font-family:
Calibri;mso-hansi-font-family:Calibri">臭氧可就地制造获得，它只需要电能，不需任何辅料和添加剂。</span></p>

<p class="MsoNormal" style="margin-left:5.25pt;text-indent:21.0pt"><span lang="EN-US">(5</span><span style="font-family:宋体;mso-ascii-font-family:Calibri;
mso-hansi-font-family:Calibri">）</span> <span style="font-family:宋体;mso-ascii-font-family:
Calibri;mso-hansi-font-family:Calibri">某些特定的用水中，如食品加工，饮料生产以及微电子工业等，臭氧消毒</span> <span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">不需要从已净化的水中除去过剩杀菌剂的附加工序，如用氯消毒时的脱氯工序</span>
<span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:
Calibri">。</span></p>

<p class="MsoNormal" style="margin-left:5.25pt;text-indent:21.0pt"><span style="font-family:宋体;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri">由于臭氧在水中很不稳定，容易分解，如接触池口处水中剩余臭氧尚有</span><span lang="EN-US">0.4mg/L,</span><span style="font-family:宋体;mso-ascii-font-family:
Calibri;mso-hansi-font-family:Calibri">但经过水厂清水池的停留后，水中的剩余臭氧已完全分解，没有剩余消毒剂的水将进入管网。因此，经过臭氧消毒的自来水通常在其进入管网前还要加入少量的氯或氯胺，以维持水中一定的消毒剂剩余水平。</span></p>

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coollckvalve

<p>在国内尚属新兴工艺吧？有待考察~~</p>

zhankuno3

不是呀，现在南方有很多在用呀，不过他们用的大设备好多用的都是进口的，目前国家技术力量还不够。