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净水器过滤水有必要吗

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Water and the need for filtration in the home净水器过滤水有必要吗

(相关:家庭净水方案

It is generally recommended that we drink 8 - 10 eight oz. glasses of water a day.  Water is needed for efficient functioning of many of the bodies systems, proper utilization of many vitamins and nutrients, as an internal moisturizer for skin, and on and on.  There is no doubt that we need water, the questions are:
Why do we need to filter the water?
What filtration methods are there and which is best?
Where in the water supply is filtration most appropriate?
What kind of filter do I need?
Where do I get a quality filter at good price?
Each of these questions is examined below.

Why do we need to filter the water?
Even though many of us have access to treated water, there are more and more concerns everyday about substances in the water that are not neutralized or eliminated by chlorine and/or chloramine (a combination of chlorine and ammonia) added at the water treatment plant as well as concerns about damage caused by chlorine and chloramine themselves.  All of our household water  is from groundwater sources (aquifers, rivers, reservoirs, etc.) whether it is treated or well water.  Today these can and usually do contain Lead, Chloroform, Mercury, Pesticides, Herbicides, Fertilizers and Nitrates, MTBE (a gasoline additive now infiltrating the water supply), THM’s (chemical chlorine byproducts), Industrial pollutants, Heavy metals, various Volatile Organic Compounds (VOC’s – substances that dissolve in water), microorganisms such as Cryptosporidium and Giardia, and finally Fluoride. (Note: Despite the massive fluoride advocacy propaganda, fluoride is a toxic substance, an industrial waste actually.  Try reading the instructions on your toothpaste, particularly those regarding the small amount that should be given to children and the care that should be taken to see that they, and you, do not swallow any.)  One last comment, this one about chlorine.  Since chlorine itself is toxic to organic life forms (such as ourselves), we clearly want to remove it from water we are going to drink prior to drinking it.

It is plain to see that there are a lot of things in our water that we don’t want in our bodies.  Effective water filtration in the home can eliminate most if not all of these.  There are a number of types of systems that are available to filter water and we will discuss those a little later on.  The obvious question this raises would be: Isn't bottled water easier, cheaper and just as safe?  The answer is no.  It is not easier – filtration systems can even be mounted out of the way, under the sink, so that every time you turn on the cold water you are getting filtered water.  It is not cheaper -  bottled water is much more expensive than a home filter system, averaging about a dollar a gallon.  It is not necessarily safer - It is perfectly legal to bottle water from wells, springs and even public tap water.  You could actually be carrying home water bottles containing the same low quality water that comes out of your faucet.  Bottled water is not always free of contaminants; even Perrier had that recall due to Benzene contamination as you may remember.  Sometimes you can even taste and smell the plastic water bottle. (Note:  All plastic bottles leach plastic into the water they contain with the possible exception of the hard, blue ones.  Plastics are estrogen mimics and screw-up hormone function).  One more thing, if water is bottled and sold within the same state, it is not subject to EPA regulations.

What filtration methods are there and which is best?
A brief overview with pros and cons:
Distillation - A process to convert water to steam and then condense it back to water. This process is slow and does not remove all contaminants, like volatile organic compounds, and should have a carbon filter for this purpose. It uses substantial energy (expensive) and creates water that is rather "flat" tasting and since it removes all minerals, it may actually leach minerals from your body.
Reverse Osmosis – Very effective filtration, particularly when combined with a pre-filter for sediment and/or a carbon filter.  It is however, inefficient and slow.  RO units can waste anywhere from 5 to 12 gallons of water for every gallon of purified water it creates. The RO “waste” water is also corrosive to pipes. RO units are expensive to buy and expensive to operate and maintain. Also creates rather "flat" tasting water, removes virtually all minerals and may also leach minerals from your body.
Ion Exchange – Rids water of dissolved minerals and toxic metals, but is less efficient at removing organic compounds.  These filters normally employ sodium in the ion exchange which can lead to excess sodium in the water without additional filtration.  This method can also corrode pipes and can cause high levels of copper, iron, and lead in drinking water.
Ozone – A natural gas that oxidizes toxic substances.  Very effective against any microorganisms.  When combined with a carbon block, as in some units, is extremely effective.  Does not however, remove Fluoride, and as opposed to removing some substances, it alters them to make them inactive.  Can be expensive. 
Carbon Filtration – We are not talking about carbon granules here, but rather Solid Block Carbon Filtration, which ideally includes a copper-zinc alloy called KDF.  Removes many contaminants, leaves minerals in the water and creates healthy, good-tasting water "on demand".   Most however, do not remove Fluoride or nitrates.  Does require periodic changes of filter cartridges.

Comments and Recommendations:
All of these filtration systems will remove most contaminants.  The biggest things left to consider are fluoride, minerals, THM’s, and nitrates.  We want fluoride, THM’s and nitrates out and minerals in.  The only filter that removes those three ingredients is the reverse osmosis filter.  Unfortunately it also removes minerals (which are healthy and desired), can be expensive, and is ridiculously wasteful of water (it cannot really be justified for that reason alone).  The Ozone filter removes nitrates and THM’s and leaves minerals and fluoride.  Like all the other filters with the exception of carbon however, it pre-processes water into a storage tank which can leach plastic or aluminum back into the water, or organisms can grow in the tank over time.  Ozone filters are also initially expensive ($500.00 or more).  That brings us to carbon filtration.
Carbon filtration generally leaves minerals in, and filters out THM’s.  There are a wide variety of Carbon filtration systems and with careful research one can find those that will also reduce fluoride effectively.  Nitrates, which are often associated with fertilizer runoff are a bigger problem with well water than with municipally supplied water.  (Note:  Completely untreated well water can also have added concerns regarding E.coli, fecal coliform, salmonella, and cholera.  There are units that can address these concerns also.)  Carbon filtration is likely to be the least expensive way to address the most concerns.  It also has the advantage of being compact, and providing filtered water on demand. 

Where in the water supply is filtration most appropriate?
Many people think the best way to approach water filtration is to use what is known as a whole house filter.  This is a filter that is put in the main water line into the house.  It filters all water coming into the house before it goes anywhere else.  The main drawback to this approach--whether you have treated city water or well water--is that you can’t know what may be in the pipes between that filter and where you are using it.  There could be bacteria, and or other nasty things that could re-enter the water supply.  For that reason, we recommend filtering the water as close as possible to where and when it will be used.  Right at the spigot for instance for drinking water.

What kind of filter do I need?
First off there are several kinds of filters you do not want which are basically the water pitcher filters or faucet mount filters.  These are sometimes referred to in the filter industry as "feel good" filters.  You get to "feel good" that you're doing something about your water quality.  However, these small filter elements tend to be ineffective against everything but Chlorine, taste and odor (some will do a little more, but they are limited).  They are also very expensive to use and need frequent filter replacement.  This would also apply to the filters “built in” to your faucet or refrigerator. 

What kind then is recommended.  For drinking water, it is best to use a countertop or under-counter filter which will filter the water immediately prior to its coming out of the spigot.  This is mostly a matter of choice although the countertop models do take up space on your counter.  The counter top model usually can be switched off when one does not want filtered cold water, but usually has a lower capacity between replacing cartridges than do the under-counter models.   The under counter models can have larger filtration capacities because they do not have to be designed to take up as little space as a unit that will sit on the counter.  They also have the advantage of delivering filtered water every time you turn on the cold water (you don’t have to remember to turn the filter on).

Where do I get a quality filter at a good price?
You can obviously find water filters in number of locations nowadays, grocery stores often have them as well as the “big box” stores like Home Depot, or Lowe's.  Such places can appear to have inexpensive water filter systems, however, when the replacement filter costs are included, they can be fairly expensive.  When you consider that you would want filtered water for drinking, boiling your pasta, other cooking needs , making tea or lemonade, etc., it is easy to suppose a water usage for a family or four that could easily reach 5 – 7 gallons a day.  Many well engineered under-counter filters as an example, state that you need to replace the filter cartridges once a year and are often rated for around 2000-2500 gallons (6 to 7 gallons a day).  I am going to give a comparison using prices on a national brand from their own web site (on 2/23/02).  It is probably reasonable to assume you could beat these prices by up to 20% at one of the “big box” chains.  (Note: this is not meant as a slight on the products, their performance, or the pricing of the PUR line of water filters).

The PUR Plus Undersink costs about $109.99, each filter lasts about 200 gallons.  Figuring buying 11 more replacement filter cartridges at $27.45 each (to get to 2400 gallons in a year), would add another $301.95.  Total cost, 2400 gallons of filtered water with PUR = $411.94.  Plus, using these same figures, it will cost you another $329.40 next year for 12 more filters.  By contrast, a quality under-counter carbon block filter can be purchased through us for $159.00 the filter for which will last a year (2500 gallons) and cost around $50.00 (for maximum features) to replace the filter cartridges for next year.  If you have an untreated water supply (i.e. a well) the unit we recommend costs $349.00 if you order through us.

Final comments
 I wanted to bring up one more topic briefly.  Should you be concerned with filtering your shower water?  You can absorb more chlorine through your skin and lungs in one shower then you can in all the tap water you could drink in a day.  Chlorine not only dries your skin and hair, studies show that long-term exposure to chlorine has been linked to various cancers, and, recently, to increased risk of miscarriage.  Without going into great detail, shower filters are available that remove chlorine plus a few other things for less than $50.00.   Shower filters also cut down on soap scum and make the shower easier to keep clean.

Comments and Recommendations:

All of these filtration systems will remove most contaminants.  The biggest things left to consider are fluoride, minerals, THM’s, and nitrates.  We want fluoride, THM’s and nitrates out and minerals in.  The only filter that removes those three ingredients is the reverse osmosis filter.  Unfortunately it also removes minerals (which are healthy and desired), can be expensive, and is ridiculously wasteful of water (it cannot really be justified for that reason alone).  The Ozone filter removes nitrates and THM’s and leaves minerals and fluoride.  Like all the other filters with the exception of carbon however, it pre-processes water into a storage tank which can leach plastic or aluminum back into the water, or organisms can grow in the tank over time.  Ozone filters are also initially expensive ($500.00 or more).  That brings us to carbon filtration.

Carbon filtration generally leaves minerals in, and filters out THM’s.  There are a wide variety of Carbon filtration systems and with careful research one can find those that will also reduce fluoride effectively.  Nitrates, which are often associated with fertilizer runoff are a bigger problem with well water than with municipally supplied water.  (Note:  Completely untreated well water can also have added concerns regarding E.coli, fecal coliform, salmonella, and cholera.  There are units that can address these concerns also.)  Carbon filtration is likely to be the least expensive way to address the most concerns.  It also has the advantage of being compact, and providing filtered water on demand. We have found a supplier for a two stage carbon block under counter filter which has the most well documented testing we have seen on the vast amount of contaminants it removes from the water (see below for listing).  We heartily recommend this filter and its low price of $159.00. 如需订购,请拨打:0130-88807175 詹生

The water filter system that you can order for $169 provides the following clearances:

More than 99% chlorine
More than 99% lead
More than 95% chloroform
More than 98% mercury
More than 98% arsenic
More than 87% cadmium
More than 94% selenium
More than 93% chromium VI
More than 99.96% giardia and cryptosporidium
More than 93% 2,4D ( an herbicide used in row crops that affect the function of the kidney, liver and adrenal glands)
More than 99% lindane and other pesticides (lindane is an insecticide used on cattle, in lumber, and in gardens; it affects the liver, kidney and the cardiovascular and reproductive systems)
Up to 95% of Volatile Organic Compounds, benzene, MTBE, Fluoride, Insecticides, Fertilizers, Industrial pulutants, petroleum products, THM’s, heavy metals and asbestos (from asbestos cement water mains and the erosion of natural deposit.


Alternate filtration method comparison

Type of filter Advantages Disadvantages 
Distillation – Converts water to steam and then condenses it back to water Removes many contaminants.
High heat has some sterilization properties. Does not remove VOC’s
Uses a lot of energy to heat water .
Slow.
Removes minerals from water.
Produces a flat tasting water. 
Reverse Osmosis – water is forced through a semi-permeable membrane that only allows water, oxygen and a small amount of minerals through. Effectively reduces dissolved solids including fluoride, lead, and cadmium.
Particularly effective when combined with a sediment and/or carbon filter Extremely wasteful, uses 5 to 12 gallons of water to produce one gallon of drinkable water.
Slow.
Can be expensive
Removes minerals from water.
Produces a flat tasting water. 
Ion Exchange – Uses an ion exchange to purify water. Gets rid of dissolved minerals and toxic metals. Only moderately efficient in removing organic compounds.
Can leave excess sodium in the water from sodium ion exchange process.
Can cause high level of copper, iron, and lead in water. 
Ozone – Uses Ozone to oxidize toxic substances. Very effective against any microorganisms.
Treats for many contaminants.
Works on any water supply.
Removes chlorine.
Removes nitrates Can be expensive.
Does not remove Fluoride.
Inactivates certain contaminants (like pesticides) rather than removing them.
Does leave a very small amount of residual Ozone in the water. 
Carbon Filtration – uses a sediment and Carbon block filter to purify. Remove many contaminants
Real time, on demand filtration. 
Inexpensive
Leaves minerals in the water. Most do not remove Fluoride or Nitrates.
Requires yearly filter cartridge change. 

gg翻译如下:
一般建议,我们喝8 - 108盎司杯水天。水是需要的机构系统,多种维生素和营养适当利用许多有效运作,作为内部皮肤保湿,并下去。毫无疑问,我们需要水的问题是:
为什么我们需要过滤的水?
什么过滤方法有哪些最好?
供水过滤哪里最合适?
什么样的过滤器,我需要?
我在哪里可以得到一个好价钱质量过滤器?
这些问题都被检查如下。

为什么我们需要过滤的水?
尽管我们许多人都获得食水,有越来越多的关切,在那些没有抵消或氯取消和/或氯胺水的物质生活(一氯和氨的组合)在水处理厂的补充以及所造成的损害氯和氯胺自己的关切。我们家的水全部是从地下水源(含水层,河流,水库等),无论是处理或井水。今天,这些都与通常含有铅,氯仿,汞,杀虫剂,除草剂,肥料和硝酸盐,甲基叔丁基醚(汽油添加剂现已渗透水供应),三卤甲烷的(化学氯的副产品),工业污染物,重金属,各种挥发性有机化合物(挥发性有机化合物的 - 物质溶于水),如隐孢子虫和贾第鞭毛虫的微生物,最后氟化物。 (注:尽管有大量的氟化物宣传宣传,氟是一种有毒物质,工业废物的实际。试着读牙膏上的指示,特别是有关的小数额应考虑儿童及应采取看到照顾他们和你,不要吞食任何东西。)最后一个意见,这对氯之一。由于氯气本身是有毒的有机(如自己)的生命形式,我们显然要删除的水,我们要喝酒之前,饮用。

人们清楚地看到,有许多事情在我们的水,我们不希望在我们的身体很多。在家庭中的有效水过滤可以消除大多数,甚至所有这一切。有一些系统可用于过滤水的种类,我们将讨论这些稍晚的。一个明显的问题,这引起了会是:是不是瓶装水更容易,更便宜和公正的安全吗?答案是否定的。它不是简单 - 过滤系统,甚至可以安装的方式进行,在水槽,以便每次你在冷水您得到过滤后的水转。这不是便宜 - 瓶装水不仅仅是一个家庭过滤系统昂贵,平均每加仑1美元。这并不一定是安全的 - 这是完全合法的一瓶井水,泉水,甚至公共自来水。你实际上可以携带自制水瓶包含相同的低质量的水来自选民的龙头。瓶装水并不总是免费的污染物,甚至毕雷有这样的回收苯污染,由于你可能还记得。有时你甚至可以味觉和嗅觉的矿泉水瓶。 (注:入水,他们同硬,蓝色的包含所有可能的例外塑料瓶溶解塑料。塑料是模仿雌激素和一团糟激素功能)。还有一件事,如果是瓶装水和同一国家内的销售,是不受美国环保署规定。

什么过滤方法有哪些最好?
带有正反简要概述:
升华 - 工艺将水蒸汽凝结,然后回用水。这个过程是缓慢的,不会删除喜欢挥发性有机化合物的污染物,并应为此一碳过滤器。它使用大量的能源(昂贵的),并创建水,是相当“平面”的味道,因为它删除所有矿物,它实际上可能从你的身体浸出矿物质。
反渗透 - 非常有效的过滤,特别是结合前的沉积物和/或碳过滤器过滤器。不过,这是,低效和缓慢的。反渗透单位可以废物5日至12加仑的水,每一个地方的纯净水它创建加仑。选举主任“废物”的水也是腐蚀性水管。反渗透单位购买昂贵和昂贵的操作和维护。还创建而“平”品酒水,去除几乎所有的矿物质,也可能从你的身体浸出矿物质。
离子交换 - 肋的溶解矿物质和水的有毒金属,但在消除不有机化合物效率。这些过滤器通常采用的离子交换钠,可导致水钠过剩没有额外的过滤。该方法也腐蚀管道,并可能导致铜,铁高的水平,并导致饮用水中。
臭氧 - 阿天然气氧化成有毒物质。非常有效地打击任何微生物。当结合的碳块在一些单位,是非常有效的。不但是,氟化物去除,并相对于消除一些物质,改变他们,使他们不活跃。可以是昂贵。
碳过滤 - 我们不是在谈论这里的碳颗粒,而是固体碳过滤座,其中最好包括铜,锌合金称为KDF滤料。删除许多污染物,树叶在水中的矿物质和创造健康,按需好吃的水“”。大多数但是,不要删除氟化物或硝酸盐。是否需要过滤筒周期性变化。

意见和建议:
这些过滤系统都将去除大部分污染物。左边的最大的事情需要考虑的氟化物,矿物质,三卤甲烷的,和硝酸盐。我们希望氟化物,三卤甲烷的和硝酸盐出来英寸唯一的过滤器,删除这三个成分的矿物是反渗透过滤器。不幸的是还删除矿物(这是健康和期望),可昂贵,是可笑的浪费用水(不能真正理由仅仅出于这个原因)。臭氧过滤器去除硝酸盐和三卤甲烷的和叶矿物和氟化物。像所有的碳过滤器之外,其他不过,预加工成一个存储池,可以渗入水塑料或铝回来,或生物水在坦克随着时间的推移。臭氧过滤器,也初步昂贵($ 500.00或以上)。这使我们的碳过滤。
碳过滤后,普遍的矿物质,并指出过滤三卤甲烷的。有许多碳过滤系统和多种仔细研究可以发现那些也将减少氟有效。硝酸盐,经常与径流相关的化肥是一个更大的问题与比市政当局以及供水水质。 (注:完全未经处理的井水,也能增加关切大肠杆菌,粪大肠菌群,沙门氏菌,霍乱。还有的单位,可以解决这些问题也。)碳过滤可能是最昂贵的方式解决最关注。它还具有的优点是结构紧凑,并提供过滤水的需求。

供水过滤哪里最合适?
很多人认为,最好的方法水过滤是使用所谓的整个房子过滤众所周知的。这是一个是在进入屋内主要供水线将过滤器。它会过滤所有的水进了屋前,去其他地方来。主要缺点这种方法 - 你是否有处理城市水或井水 - 是,你可以不知道该怎么可能在该过滤器之间并在您使用它的管道。有可能是细菌和其他讨厌的事情会再次进入供水。出于这个原因,我们建议过滤尽可能接近在何时何地将所用的水。就在对饮用水,例如水龙头。

什么样的过滤器,我需要?
首先有过滤器你不想,基本上水投手水龙头安装过滤器或过滤器几种。这是有时被称为在过滤器行业的“感觉良好”过滤器。你能“感觉良好”,你正在做你的水质东西。然而,这些小滤芯往往是针对事,但氯,异味(有些会无效多一点,但他们是有限的)。他们也非常昂贵,需要使用频繁更换过滤器。这也将适用于过滤器“中的”建到您的水龙头或冰箱。

那么什么样的建议。饮用水,最好使用台面或柜台过滤器将过滤水之前,将立即走出来的龙头。这主要是一个选择的问题,虽然台面模型并占用您的柜台空间。计数器顶级车型通常可以关掉当一个人不希望过滤冷水,但通常有一低之间的替换墨盒的容量比在柜台模式。计数器模式下,可以有较大的过滤能力,因为他们没有被设计为一个单位一样,将坐在柜台小的空间了。他们也有交付过滤水每次您在冷水变成优势(您不记得要打开该过滤器)。

我在哪里可以得到一个好价钱质量过滤器?
你当然可以找到一些地点滤水器现在,经常有杂货店,以及他们的“大盒子”,像家得宝,商店洛的。这些地方有可能出现廉价的水过滤系统,但是,当更换过滤器的费用计算在内,它们可以相当昂贵。当你考虑,你会要过滤的饮用水,沸腾你的面食,其他烹饪需要,使茶或柠檬水等,可以很容易地假设一个家庭或四个,可以很容易达到5 - 7加仑的水的使用白天。许多精心设计下,反为例过滤器,说明您需要更换过滤器一年一次,经常约2000年至二五〇〇年加仑(6到7加仑天)额定墨盒。我会给予他们自己的(在2/23/02)网站上使用的比较民族品牌的价格。这可能是合理的,假设你可以击败达20%的“大盒子”之一链这些价格。 (注:这是不是就意味着产品轻微的,他们的表现,或滤水器聚氨酯线定价)。

聚氨酯加双枪的成本约$ 109.99,每个净水器持续约200加仑。盘算买进27.45美元11多更换滤芯每个(获得一年至2400加仑),将再增加三百零一点九五美元。总成本,2400加仑,聚氨酯的过滤水=四百十一点九四美元。另外,使用这些相同的数字,它是收费的12多个过滤器再三百二十九点四〇美元明年。与此相反,在质量柜台碳块过滤器可以通过我们购买的$ 159.00的滤波器将持续一年(2500加仑)的费用约$ 50.00(最大特点),以取代明年滤芯。如果你有一个未经处理的水供应(即良好),我们建议的单位成本$ 349.00,如果您通过我们的秩序。

最后的评论
 我想带出更多的话题简单。如果您关心您的淋浴水过滤?你可以通过你的皮肤吸收和肺在一个淋浴,那么你可以在更多的氯所有自来水可以喝一天。氯不仅干燥皮肤和头发,研究表明,长期接触氯气一直与各种癌症,以及最近增加流产的风险。没有进入详加,淋浴器,可消除氯的加上不到$ 50.00其他一些东西。淋浴过滤器还减少了肥皂泡沫,使淋浴更容易保持清洁。

意见和建议:

这些过滤系统都将去除大部分污染物。左边的最大的事情需要考虑的氟化物,矿物质,三卤甲烷的,和硝酸盐。我们希望氟化物,三卤甲烷的和硝酸盐出来英寸唯一的过滤器,删除这三个成分的矿物是反渗透过滤器。不幸的是还删除矿物(这是健康和期望),可昂贵,是可笑的浪费用水(不能真正理由仅仅出于这个原因)。臭氧过滤器去除硝酸盐和三卤甲烷的和叶矿物和氟化物。像所有的碳过滤器之外,其他不过,预加工成一个存储池,可以渗入水塑料或铝回来,或生物水在坦克随着时间的推移。臭氧过滤器,也初步昂贵($ 500.00或以上)。这使我们的碳过滤。

碳过滤后,普遍的矿物质,并指出过滤三卤甲烷的。有许多碳过滤系统和多种仔细研究可以发现那些也将减少氟有效。硝酸盐,经常与径流相关的化肥是一个更大的问题与比市政当局以及供水水质。 (注:完全未经处理的井水,也能增加关切大肠杆菌,粪大肠菌群,沙门氏菌,霍乱。还有的单位,可以解决这些问题也。)碳过滤可能是最昂贵的方式解决最关注。它还具有的优点是结构紧凑,并提供过滤水的需求。我们发现了两个阶段的筛选下,反拥有最有案可稽的测试中,我们对大量的污染物从水中去除看到碳块的供应商(以下上市见)。我们衷心建议使用此过滤器及其$ 159.00低价格。如需订购,请拨打:0130-88807175 詹生

水过滤系统,你可以为了169美元提供了以下许可:

超过99%的氯
超过99%的铅
超过95%氯仿
98%以上的汞
超过98%砷
超过87%,镉
超过94%硒
超过93%的铬六
有超过99.96%贾第虫和隐孢子虫
超过93%2,4 D(下一个连续使用的除草剂作物影响肾,肝和肾上腺功能)
99%以上和其他杀虫剂林丹(林丹是对牛使用了杀虫剂的木材,并在花园,它影响到肝,肾,心血管和生殖系统)
截至95挥发性有机化合物,苯,甲基叔丁基醚,氟化物,杀虫剂,肥料,工业pulutants,石油产品,%卤甲烷的,重金属和石棉(石棉水泥水管和自然存款流失。


备用过滤方法的比较

类型的净水器优点缺点
蒸馏 - 将水蒸汽,然后冷凝水回移除许多污染物。
高耐热性能有一定的杀菌。不删除挥发性有机化合物的
使用了大量的能量来加热水。
慢的。
去除水中矿物质。
产生单位品尝水。
反渗透 - 水是被迫通过半透膜只允许水,氧气和少量的矿物质通过。有效地减少固体溶解,包括氟,铅和镉。
特别有效的沉积物和/或碳过滤器极大的浪费结合起来,用5至12加仑的水,生产一加仑的饮用水。
慢的。
可能很昂贵
去除水中矿物质。
产生单位品尝水。
离子交换 - 使用离子交换来净化水质。摒弃了溶解矿物和有毒金属。只有适度有效地去除有机物。
能留在水钠离子交换过程中多余的钠。
可引起铜,铁高的水平,导致水。
臭氧 - 利用臭氧的氧化有毒物质。非常有效地打击任何微生物。
黄柏对许多污染物。
工程的供水。
去除氯。
去除硝酸盐可昂贵。
不会删除氟化物。
失活(如农药),而不是消除他们的某些污染物。
是否留在水中臭氧残留极少量。
碳过滤 - 使用碳块沉积和过滤净化。删除许多污染物
实时,按需过滤。
廉价
叶片在水中矿物质。大多数人没有消除氟或硝酸盐。
要求每年滤芯的变化。
净水器解析的初浅观点,仅供参考。有什么想法或是建议可以给我们留言。
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标签:有必要用净水器吗净水器过滤净水器过滤水的好处净水器过滤水
分类:净水器知识| 发布:zhanfengwei| 查看: | 发表时间:2010/1/21
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