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水处理设备用水水质要求--大连水处理设备-大连软化水设备-大连纯水设备-大连锅炉软化水设备

2009-12-04 10:09:58

水处理设备用水水质要求--大连水处理设备-大连软化水设备-大连纯水设备-大连锅炉软化水设备

⑴ 软化水
软化水是指将水中硬度(主要指水中钙、镁离子)去除或降低一定程度的水。水在软化过程中,仅硬度降低,而总含盐量不变。

⑵脱盐水
脱盐水是指水中盐类(主要是溶于水的强电解质)除去或降低到一定程度的水。其电导率一般为1.0-10.0µS/CM,电阻率(25℃)0.1- 1.0MΩ·CM,含盐量为1-5mg/L。 

 ⑶纯水 
纯水是指水中的强电解质和弱电解质(如SiO2、CO2等)去除或降低到一定程度的水。其电导率一般为10.0-0.1µS/CM,电阻率(25℃)> 0.1-10.0MΩ·CM,含盐量<1mg/L。 

 ⑷超纯水 
超纯水是指水中的导电介质几乎完全去除,同时不离解的气体、胶体以及有机物质(包括细菌等)也去除至很低程度的水。其导电率一般为0.1-0.055µS/CM,电阻率(25℃)> 10.0MΩ·CM,含盐量<0.1mg/L。理想纯水(理论上)电导率为0.055µS/CM,电阻率(25℃)为18.0MΩ·CM。

⑸锅炉用水 
锅炉用水是将水在一定的温度和压力下加热产生蒸汽,用蒸汽作为传热和动力的介质。一般工矿企业常采用低压或中压锅炉产生蒸汽做热源或动力用,这种锅炉对水质要求稍低;而发电厂或热电站常采用高压锅炉产生蒸汽以推动汽轮机来发电,为保证蒸汽对汽轮机无腐蚀和结垢沉积,这种锅炉对水质要求非常高。因此,锅炉用水的水质要求根据锅炉的工作压力和温度的不同而不同,不论何种锅炉用水,它对水的硬度都有较严格的限制。其它凡能导致锅炉、给水系统及其它热力设备腐蚀、结垢及引起汽水共腾现象,使离子交换树脂中毒的杂质如溶解氧、可溶性二氧化硅、铁以及余氯等都应大部或全部除去。

1 demineralized water
Demineralized water refers to water hardness (mainly refers to the water calcium, magnesium ions) to remove or reduce a certain degree of water. In the process of water softening, hardness is reduced, and total content.

2 salt-removed water
Refers to the salt water desalination (mainly is soluble in water electrolyte) to remove or reduce strong to a certain degree of water. Conductivities generally 1.0-10.0 maximum tire-road friction coefficient S/CM, resistivity (25 ° c) 0.1-1.0 CM Ω M, salt, 1-5mg/L.

3 pure water
Water is refers to the strong and weak water electrolyte electrolytes (such as CO2, etc.) remove SiO2, or reduced to a certain degree of water. Conductivities generally for 10.0-0.1 maximum tire-road friction coefficient S/CM, resistivity (25 ° c) > 0.1-10.0 Ω M CM, salt, 1mg < / L.

4 ultra-pure water
Ultra-pure water refers to water almost completely remove conductive medium, also not the gas dissociation, colloid and organic substances (include bacteria, etc.) also remove to very low degree of water. The conductivity of 0.1 - general 0.055 maximum tire-road friction coefficient S/CM, resistivity (25 ° c) > 10.0 Ω M CM, salinity, < 0.1 mg/L. The ideal purified water (in theory) conductivity 0.055 for maximum tire-road friction coefficient S/CM, resistivity (25 ° c) for Ω M, 18.0 CM.

5 boiler water
Water boiler water is in a certain temperature and pressure produced by steam heating steam, heat and power as the medium. General industrial enterprise often USES low or medium heat boiler steam is produced by doing this or force of water boiler request slightly lower, While plants or thermal power plant boiler steam pressure produced often used to generate electricity, to promote the turbine steam turbine for guarantee of corrosion and scaling deposition, the boiler water requirement is very high. Therefore, the boiler water quality requirements according to the boiler work pressure and temperature varies, regardless of boiler water to water hardness, it is restricted. Other who can cause boilers, water supply system and other heating equipment corrosion and scale of smoke and soda and ion exchange resin poisoned impurities such as oxygen, soluble silica, iron and residual chlorine etc should be most or all away.

经典案例介绍