甘肃11选5

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    为什么自来水不适合直接养鱼?
    来源:http://www.yunsyb.com  2019-04-26 17:10:54
    养过鱼的朋友都知道,鱼体表皮层里长有一种杯状的细胞,不断地分泌着粘液,也就是鱼体表面滑滑的那一层粘膜,济南鱼缸定做提示大家,正是那层粘膜可以使鱼体在水中游动时减少摩擦;同时又能保护鱼体不受寄生虫、霉菌、细菌和其他微小生物的入侵,保持皮肤正常的渗透能力。
    Friends who have raised fish all know that there is a cup-shaped cell in the epidermis of the fish body, secreting mucus constantly, that is, the slippery layer of mucus on the surface of the fish body. The custom-made fish tank in Jinan reminds us that it is the mucus layer that can make the fish body less frictional when swimming in the water, and at the same time can protect the fish body from parasites, fungi, bacteria and other micro-organisms. Normal penetration of the skin.
    而自来水中的氯却是一种强氧化剂,有一点点化学基础的朋友也知道,氯在水中生成一种很不稳定的强氧化剂——次氯酸(HClO)。这个氧化剂对鱼儿的穿透杀伤力很强,能使鱼体分泌的粘液失去对鱼的保护作用,导致鱼体内电解质代谢严重失调,并在缺氧的状态下窒息而亡。
    But chlorine in tap water is a kind of strong oxidant. Friends with a little chemical basis also know that chlorine produces a very unstable strong oxidant in water, hypochlorite (HClO). This oxidant has strong penetration and lethality to fish, which can make the mucus secreted by fish lose its protective effect on fish, and lead to serious imbalance of electrolyte metabolism in fish, and suffocate and die in the state of hypoxia.
    所以,没有经过处理的自来水直接用来养鱼是不合适的。虽说自来水是民用的、达到标准的生活用水,但是要用于工业生产、养殖场或是家庭鱼缸等这么一些特殊用途,还是要根据其要求进行处理后再使用。
    Therefore, it is inappropriate to use untreated tap water directly for fish farming. Although tap water is civil and up to standard for domestic use, it should be treated and reused according to its requirements if it is to be used for such special purposes as industrial production, aquaculture farms or family aquariums.
    那么自来水中的余氯对鱼体有什么伤害?
    So what harm does residual chlorine in tap water do to fish?

    自来水添加氯气,主要是为了防止水传播疾病,影响人体健康,但是自来水通过氯气消毒后,部分氯气会残留在水中(余氯)。余氯具有强烈的毒性,所以它在水中的含量受到相当严格的限制(标准允许范围是0.2~1.5ppm,一般低于1.0ppm一下)。

    济南鱼缸定做展示

    The main purpose of adding chlorine to tap water is to prevent water-borne diseases and affect human health. However, some chlorine will remain in the water (residual chlorine) after the tap water is disinfected by chlorine. Residual chlorine has strong toxicity, so its content in water is strictly limited (the standard permissible range is 0.2-1.5 ppm, generally less than 1.0 ppm).
    可是我们人类这个标准仍远高于鱼的标准允许范围。余氯浓度超过0.02ppm,就可能对鱼粘膜产生强烈的腐蚀;超过0.1ppm,对一些敏感的鱼类会造成致命的威胁。因此直接使用自来水换水(包括局部换水)是具有相当大的危险性的!
    But our human standard is still far higher than that of fish. If the residual chlorine concentration exceeds 0.02 ppm, the fish mucosa may be strongly corroded; if the residual chlorine concentration exceeds 0.1 ppm, it may cause fatal threat to some sensitive fish. Therefore, the direct use of tap water for water exchange (including partial water exchange) is quite dangerous!
    而且前面也说到,氯在水中生成次氯酸(HClO)。因为其极不稳定的结构,除非余氯高于1.0ppm,否则游离态的氯气都会以次氯酸或次氯酸跟离子(ClO-)的形态存在。它们两者的相对浓度又与pH值有关。当pH越高,HClO越低,ClO-越高。比如,pH=6时,HClO占96%,ClO-占4%;pH=9时,HClO占3%,ClO-占97%。而大多数鱼的pH适应范围在7左右,HClO越高,pH则越低,对鱼的杀伤力就越大!
    And as mentioned earlier, chlorine produces hypochlorite (HClO) in water. Because of its extremely unstable structure, unless residual chlorine is higher than 1.0 ppm, free chlorine gas will exist as hypochlorite or hypochlorite with ion (ClO-). The relative concentration of both of them is related to the pH value. The higher the pH, the lower the HClO and the higher the ClO-level. For example, HClO accounts for 96% and ClO - 4% at pH = 6, HClO 3% and ClO - 97% at pH = 9. The pH range of most fish is about 7. The higher the HClO, the lower the pH, the greater the lethality to fish.
    本文由济南鱼缸定做友情奉献.更多有关的知识请点击:http://www.yunsyb.com!我们将用的技术.真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.
    This article is customized by Jinan Fishbowl. For more information, please click: http://www.yunsyb.com! We will use advanced technology and sincere attitude to provide you with comprehensive services. More relevant knowledge will be dedicated to you one after another. Please look forward to it.
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