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class="wrap clearfix"> <div class="logo"> <a href="http://www.sina.com.cn/"><img src="http://i1.sinaimg.cn/IT/deco/2013/1210/digi/standardl2nav_sina_new.png" alt="新浪网"></a> <span><a href="http://digi.sina.com.cn/"><img src="http://i2.sinaimg.cn/IT/deco/2013/1210/digi/standardl2nav_digi.png" alt="新浪数码"></a></span> </div> <div class="link"> <a href="http://tech.sina.com.cn/">新浪科技</a><span>|</span><a href="http://www.sina.com.cn/">新浪首页</a><span>|</span><a href="http://news.sina.com.cn/guide/">新浪导航</a> </div> <div class="user-login" id="userLogin"></div> </div> </div> <div class="banner-wrap"> <div class="banner"> <span class="issue">第十二期</span> <h1></h1> </div> </div> <div class="main clearfix" id="main"> <div class="content"> <div class="article"> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>家用净水器都有哪些类型？都有什么特点？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <ol> <li>家用净水器按照滤膜不同可以分为超滤型和RO反渗透型两类。</li> <li>“RO”就是反渗透的意思，RO反渗透膜可达到过滤直径在0.001微米甚至更小的颗粒，经过RO膜的水只是H2O，是纯净水。RO反渗透型净水器具有过滤精度高，达到直饮水标准，水质口感好的特点，但同时也具有出水量低，出水慢，而且产生废水量大的缺点，更换滤芯的成本也高于超滤。</li> <li>除RO反渗透净水机以外的基本都是超滤净水机，超滤型净水器的超滤膜直径为0.1微米，孔径大于RO膜，可以拦截水中的细菌、胶体、病毒等杂质。超滤型净水器具有出水快、出水量大，废水率低的优点，但由于过滤精度低，无法完全过滤病毒和一些重金属离子，所以不建议直饮。</li> </li> </ol> <p align="center"><img src="http://i2.sinaimg.cn/IT/2015/0723/U5385P2DT20150723161543.jpg" alt="" ></p> <p> <p align="center"><img src="http://i2.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26561F3306DT20150723141034.jpg" alt="" ></p> </P> </div> </div> </div> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>市场上的净水机宣传的那么花哨，真靠谱吗？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <div> <p>由于国人对饮水安全越来越重视，所以净水机市场发展迅猛，在这个大环境下，越来越多生产企业进入淘金，也造成了净水机良莠不齐的情况。特别是在宣传方面，夸大过滤效果、虚假宣传的情况时有发生，不明就里的消费者该如何选购呢？<br> 不用看什么认证、不用理什么中国优质、世界名牌，只需要去中国卫生部官网查下这款净水机有没有卫生部的审批，如果有批件就是合格的，如果没有再大牌也不要选择。<br> 另外，消费者在很多时候忽略了政府类网站的重要性，其实很多有用信息都可以通过政府类网站活动，而且绝对真实有效。<br> </p> <p align="center"><img src="http://i3.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26561F3442DT20150723141034.jpg" alt="" ></p> </div> <p><br> </p> </div> </div> </div> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>为什么有的净水器只有一个滤芯，而有些则有好多？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <p>净水机从滤芯结构上可以分为单级滤芯净水器、单级多层(复合滤芯)净水器和多级滤芯净水器三种。<br> 单级净水器的滤筒中只有一种过滤材料(比如pp棉或陶瓷滤芯)，这种净水器只能起到预处理作用，而且对水质改善的作用比较单一，所以单级滤芯净水器并不能用来直饮，比如单级陶瓷水龙头净水器。<br> 单级多层净水器是指在一个滤筒或者滤芯中，采用多种滤料复合而成，逐级分布于滤芯中，原水通过滤芯中的各级滤料，能够分别去除不同种类的有害物质。很多国外品牌的净水器都采用这种单级多层净水器。水质较差的地方不适合这种滤芯。<br> 多级净水器是由多个滤芯联合而成的净水器。一般都是采用渐进式的过滤方式，第一级用PP棉滤芯来过滤泥沙、铁锈，第二级用颗粒活性炭滤芯来进一步吸附杂质和异味，第三级UF超滤膜或RO反渗透膜滤芯彻底过滤掉有害物质，第四级用后置碳棒滤芯来吸附余氯和异味改善口感等。<br> </P> <p align="center"><img src="http://i1.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26561F3444DT20150723141034.jpg" alt="" ></p> </div> </div> </div> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>滤芯越多过滤效果越好吗？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <p>如果以全部合格，质量过关的角度看，滤芯越多过滤的杂质也会越多，但是实际生活中却并不一定。<br> 有些净水器为了宣传的需要，标榜多级滤芯。实际上就是多加几层PP棉滤芯，多几个活性炭滤芯，再加上超滤滤芯就会号称六七级过滤，但其效果和一层是一样的，而且成本还增加了。所以滤芯越多过滤越好这句话只是存在于理论上。<br> </p> <p> <p align="center"><img src="http://i3.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26562F3442DT20150723142832.jpg" alt="" ></p> </p> </div> </div> </div> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>滤芯一般多长时间换一次？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <p>净水机和空气净化器一样，不同滤芯的更换时间都不一样。超滤膜的更换时间一般是24或者36个月，而RO反渗透滤膜的更换时间一般是12个月。一般主流净水机品牌都会给出净水机滤芯的使用寿命或者建议更换周期。<br> 但是由于我国各个地区的水质各不相同，所以更换周期还要以各地水质判断，生产企业给出的时间只是参考周期。而且滤芯的实际使用寿命还跟保养有着很大的关系。<br> </p> <p> <p align="center"><img src="http://i3.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26562F3305DT20150723141323.jpg" alt="" ></p> </p> </div> </div> </div> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>如何判断家用滤芯该更换了？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <p>由于更换滤芯更多时候需要自行判断，所以如何确定该更换了就尤为重要。<br> 净水机最为重要的超滤芯和RO反渗透膜更换可以从产水量上观察，如果产水量大大降低或者不出水时，说明这个滤芯该更换了。当饮用净水机产水发现口感不如原来时，就要考虑更换复合滤芯。<br> 净水机的核心就是滤芯，所以滤芯的更换关乎饮水健康，所以一定要关注滤芯状况。<br> </p> <p> <p align="center"><img src="http://i1.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26562F3307DT20150723141323.jpg" alt="" ></p> </p> </div> </div> </div> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>不同地区选择净水器的标准相同吗？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <p>首先明确不同地区由于水质不同，所以选择净水机的标准不同。就想有的地方水质好，选择单级多层净水器即可，而有些地方水质差、杂质多，就需要选择多级过滤净水器。<br> 由于我国幅员辽阔，地质结构负责，所以各地区水质不同，我国西部地区水质硬度较高，也就是水中钙、镁离子含量较高，容易产生水垢，这种情况下就应该选择带离子交换的树脂滤芯或KDF滤芯净水器。<br> 有些地区水质余氯残留多，有明显的异味，这时选择活性炭载量较多的家用净水器即可。<br> 而对于一些对水质要求极高，最求安全性，只想和“纯水”的朋友来说，RO反渗透净水机应该是你的选择。<br> </p> <p> <p align="center"><img src="http://i3.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26561F3307DT20150723141034.jpg" alt="" ></p> </p> </div> </div> </div> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>净水器会不会过滤掉水里的矿物质？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <p>RO反渗透净水机采用目前国际流行的反渗透膜技术，对原水进行过滤处理后不添加任何化合物生产纯水。RO反渗透膜可达到过滤直径在0.001微米甚至更小的颗粒，经过RO膜的水只是H2O。因此RO反渗透净水机也叫家用纯水机，生产的水可达到实验室纯水水质要求，不会有任何矿物质留在RO净水机过滤后的水中。<br> 其他类型净水器通过多级过滤的方式净化水质，能够吸附水中余氯去除异味，降低水中钙镁离子含量，但是由于其过滤膜孔径相对较大，是不会过滤掉水中的所有的矿物质的，但同时也无法彻底过滤掉水中的细菌。<br> </p> <p> <p align="center"><img src="http://i0.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26561F3443DT20150723141034.jpg" alt="" ></p> </p> </div> </div> </div> <div class="question-answer"> <div class="question"> <span class="question-mark">Q</span> <h2>过滤后的水和桶装水能有多大区别？</h2> </div> <div class="answer"> <span class="answer-mark">A</span> <div class="answer-content"> <p>首先要明确的是，这里说的桶装水不是我们从超市买到的大品牌5升以下的瓶装水，而是放在饮水机上的19升大桶水。<br> 这种大桶装水最大的问题就是无法确定品牌真假，无法确定水源地，不能保证这些水是经过了处理的净水。而且我们都知道这些大桶是会重复利用的，所以在多次使用过程中可能出现塑料老化，析出有害化学物质。<br> 另一个问题出在饮水机上，大多数家庭很少会清洗饮水机，一个月甚至一年都不清洗一次，这是非常容易滋生细菌的。此前有专家报告显示，在常温条件下，饮水机里的水第一天有害菌落数量为0，而在第10天却攀升到了8000。<br> 通过净水机过滤的水，只要净水机合格能够达到标称过滤效果就能保证水质，而且可以避免储水过程中的二次污染。<br> 此时，请抬头看看你的办公室里是不是也在喝大桶装水。很不幸，我司中招。<br> </p> <p> <p align="center"><img src="http://i0.sinaimg.cn/IT/images/2015-07-23/U2485P2T78D26562F3306DT20150723141323.jpg" alt="" ></p> </p> </div> </div> </div> </div> <div class="comment" id="comment"> </div> </div> <div class="sidebar"> <div class="author"> <dl class="clearfix"> <dt><a href="http://weibo.com/pavelx" target="_blank"><img src="http://i3.sinaimg.cn/IT/images/2015-01-27/U2485P2T78D26430F3304DT20150129094229.gif" alt="" width="120" height="120"></a></dt> <dd> <span class="author-title">本期帮主</span> <span class="author-name">邢焱</span> </dd> <dd class="author-intro"> <p>家电栏目责任编辑</p> </dd> </dl> </div> <div class="current-topic"> <div class="same-title"> <div class="title-wrap clearfix"> <h2>本期主题</h2> </div> </div> <div class="topic-content"> <p>空气污染引爆了空气净化器，水质恶化催热了净水器，越来越多的企业开始一头扎进净水器的水里去淘金，超滤、纳滤等概念层出不穷，更有甚者扬言不喝过滤水就是“慢性自杀”，作为消费者的你考虑过安装净水器吗？你知道净水器的水有多深吗？知道的，您挑个错，不知道的就听我唠叨唠叨。</p> </div> </div> <div class="about"> <div class="same-title"> <div class="title-wrap clearfix"> <h2>关于数码帮</h2> </div> </div> <div class="about-content"> 数码帮是一档解决用户实际需求的栏目，您可以关注<a href="http://weibo.com/sinadigi" target="_blank">@新浪数码</a> 官方微博账号，并对您感兴趣的话题进行提问。每期都会有数码专家针对您的问题进行解答。 </div> </div> <div class="review"> <div class="same-title"> <div class="title-wrap clearfix"> <h2>往期回顾</h2> 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