水处理混床怎么再生?

2025-03-14 09:58:10
推荐回答(1个)
回答1:

1 反洗分层:开混床再生泵进口门,启动再生泵,再开混床再生泵出口门,混床反洗排水门和排空气门,反洗进水门。待排空门有水流出后,关闭排空气门。开始反洗流速宜小,待树脂松动后,逐渐加大流速,直至全部床层都能松动,此时流速大致达到10m/h。阴树脂膨胀率为70%以上,阳树脂的膨胀率约为30%以上,这样经10-15分钟就可使阴、阳树脂分层。(可以使用混床出水母管中的水经出水门来加大反洗分层流量。)
2 关闭混床反洗进水门,停止以后,若树脂分层不完全,应按1的操作重新进行反洗分层。
3 放水;待阴阳树脂完全分层后,开正洗排水门,将混床内的水放出,水放至离树脂表面层表面约10cm处。
4 进再生液:开混床再生泵进口门,启动混床再生泵运行,开再生泵出口门,酸碱喷射器进水门,中间排水门,维持交换器内水位在树脂表面10cm处,稳定2分钟,再开酸碱计量箱出口门。调整酸浓度在4-5%,碱浓度在3-4%内。
5 置换;当酸碱进完后,关酸碱计量箱出口门,继续用酸碱喷射器保持原来水量进行置换,直至中间排水呈中性为止。关混床进酸碱门,中间排水门、喷射器出口门,再生泵出口门。停运再生泵,关再生泵进口门。
6 阴阳树脂的混合:混合前开中间排水门,将混床内的水放到树脂层表面上100-150mm处,关闭中间排水门。开混床底部进气门,母管出口门。从底部通入压缩空气,使树脂搅匀。所用压缩空气压力0.1-0.15MPa,时间约为5分钟。通完压缩空气要快速排水以迫使树脂迅速降落,避免树脂在降落时重新分层。排水时开混床正洗排水门。
7 正洗:开中间水泵进口门,启动中间水泵运行,开中间水泵出口门,阴床进水门及出水门,再开混床进水门及正洗排水门以10-20m/h的流速正洗。洗至出水合格方可作备用或投入运行。
再生时一定要阴、阳树脂完全分开才能再生,其余与阴阳床注意事项相同。

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