The utility model relates to a purifying treatment device for wastewater with high acid and iron content. It has ammonia storage tank, oxidation tank, transformation crystallization tank and filter. Ammonia pump and pipeline are connected between ammonia storage tank and oxidation tank to transport ammonia water into oxidation tank. The lower part of the oxidation tank has air dispersion coil connected with air compressor, the upper part has an inlet of wastewater, and the transformation crystallization tank is connected with the oxidation tank. The upper part of the crystal pool has the entrance of flocculant, the lower part is connected with the filter through the liquid conveying pump and pipeline, and the oxidation pool is equipped with the pH electrode connected with the ammonia water pump by the pH automatic control instrument to realize the automatic adjustment and control of the pH value in the oxidation pool. The pipe connected with the air compressor and the oxidation pool is connected with a rotor flowmeter to control the air volume. The lower part of the filter is equipped with an iron hydroxide storage tank and the tail is connected. Purified water storage tank. The utility model can automatically remove iron ions and organic matter in wastewater with high efficiency and low cost, and the purified water can be used for recycling, thereby reducing the pressure of wastewater on environmental pollution.
【技术实现步骤摘要】
一种高含酸高含铁废水的净化处理装置
本技术涉及一种热镀锌产生的漂洗废水的净化技术,具体是高含酸高含铁废水的净化处理装置。
技术介绍
热镀锌是一种常用的钢铁防腐方法,相比其他钢铁防腐方法,热镀锌具有加工工程简单、产量大、镀层牢固等优点。在具体的生产过程中,热镀锌由脱脂、酸洗除锈、漂洗处理(本专利技术所述的高含酸、高含铁废水来自漂洗处理工段)、溶剂助镀、热镀锌和钝化等工序构成。随着生产的进行,脱脂剂(大部分由有机物构成)将被带入到漂洗处理工段,造成漂洗水内酸的浓度和铁离子的浓度逐渐升高,当二者的浓度超过一定的限值后(酸浓度大于3%,铁离子浓度超过5g/L),热镀锌企业普遍认为这样的漂洗水将失去漂洗能力。如果漂洗水不及时处理,漂洗水中的铁离子和亚铁离子将被逐步带入助镀液内,引起助镀液内铁离子浓度提高,并随着助镀过程进行,逐步被带入锌锅内。氯化亚铁和氯化铁在锌锅内,被锌液内的合金元素铝还原,生成铁,随后铁与锌液中锌结合生成锌渣。这将为热镀锌带来两项不利后果:(1)提高锌液黏度,造成锌液流动性下降,因此提高镀层厚度和生产成本;(2)生产的锌渣,将以固废的形式出售,价格远低于 ...
【技术保护点】
1.一种高含酸高含铁废水的净化处理装置,它有储氨槽、氧化池、转化结晶池和过滤机,其特征在于储氨槽与氧化池间有氨水泵和管道连接输送氨水进入氧化池,氧化池下部有与空气压缩机连接的空气弥散盘管,上部有废水入口,转化结晶池与氧化池连通,转化结晶池上部有絮凝剂入口,下部通过液体输送泵和管道与过滤机连接。
【技术特征摘要】
1.一种高含酸高含铁废水的净化处理装置,它有储氨槽、氧化池、转化结晶池和过滤机,其特征在于储氨槽与氧化池间有氨水泵和管道连接输送氨水进入氧化池,氧化池下部有与空气压缩机连接的空气弥散盘管,上部有废水入口,转化结晶池与氧化池连通,转化结晶池上部有絮凝剂入口,下部通过液体输送泵和管道与过滤机连接。2.根据权利要求1所述高含酸高含铁废水的净化处理装置,其特征在于氧化池中装有pH电极,该电极经pH自动控制仪与氨水泵连接,实现氧化池内pH值的自动调节控制。3.根据权利要求1所述高含酸高含铁废水的净化处理装置,其特征在于空气压缩机与氧化池连接的管道上接有转子流...
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