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    多介质过滤器的日常维护要注意什么?
    来源:http://www.jnlzsb.com 发布时间:2021-04-20

    当原水的浊度达不到后续系统的进水要求时,预处理系统需要设置多介质过滤器来提升出水水质。多介质过滤器过滤原理是在过滤器的内部填充大小不一的石英砂和烟煤,利用薄膜过滤、渗透过滤及接触过滤的作用,将水中的大颗粒杂质、悬浮物、胶体等物质有效去除,产水SDI值不大于5。
    When the turbidity of raw water can not meet the requirements of the subsequent system, the pretreatment system needs to set up a multi-media filter to improve the effluent quality. The filtration principle of multi-media filter is to fill quartz sand and bituminous coal with different sizes inside the filter, and use the functions of membrane filtration, osmotic filtration and contact filtration to effectively remove large particle impurities, suspended solids, colloids and other substances in the water. The SDI value of the produced water is not more than 5.
    多介质过滤器有正洗、反洗、产水三种运行模式,其具有运行成本低、日常维护简便的优点,因此这种工艺在国内得到广泛应用。多介质过滤器的处理效果跟流速有关,流速越小,净水处理效果越好。日常维护也相对简单,只需要在多介质过滤器的自控程序设置进行定期反洗,将截留在滤料空隙中的一些杂质排出,它的处理功能即可恢复。而是否需要反洗,可以通过浊度仪、进出口压差或者设定反洗的时间间隔来评估。为了避免因进水水质波动对多介质过滤器运行状态造成较大的影响,通常在系统设会设置手动启动反洗功能。
    The multi-media filter has three operation modes: forward washing, backwashing and water production. It has the advantages of low operation cost and simple daily maintenance, so this process is widely used in China. The treatment effect of the multi-media filter is related to the flow rate. The smaller the flow rate is, the better the water treatment effect is. Routine maintenance is also relatively simple, just need to set up the automatic control program of the multi-media filter for regular backwashing, so as to discharge some impurities trapped in the filter material gap, and its processing function can be restored. Whether backwashing is needed or not can be evaluated by turbidimeter, inlet and outlet pressure difference or setting backwashing time interval. In order to avoid the influence of influent water quality fluctuation on the operation state of multi-media filter, the manual start backwashing function is usually set in the system design.
    山东多介质过滤器
    通常情况下,反洗泵大多采用立式多级泵。可把清洁的原水作为多介质过滤器的反向冲洗液。当多介质过滤器进入反洗模式时,通常以2~3倍的设计流速进行冲洗,持续约10~15分钟。待反向冲洗结束后,再以操作流方向进行短暂的正向冲洗,使介质床得以复位。为了保证多介质过滤器的良好运行效果,需要定期更换装置内的填料介质,通常更换周期约2~3年,视原水水质情况而定。
    In general, the backwash pump is mostly vertical multi-stage pump. The clean raw water can be used as the backwash liquid of the multi-media filter. When the multi-media filter enters the backwash mode, it is usually flushed at 2 ~ 3 times of the design flow rate for about 10 ~ 15 minutes. After the reverse flushing, the medium bed can be reset by a short forward flushing in the direction of operation flow. In order to ensure the good operation effect of the multi-media filter, it is necessary to replace the packing medium in the device regularly. The replacement period is usually about 2 ~ 3 years, depending on the raw water quality.
    多介质过滤器是纯化水系统预处理中一个重要环节。在系统设,选择多介质过滤器需要分析原水中的浊度和硅化物含量。当原水浊度较高、硅化物含量较多,需要在多介质过滤器前端投入适量絮凝剂,利用絮凝作用来降低水的浊度,以及混凝脱硅,进一步提高多介质过滤器的处理效果。
    Multi media filter is an important part in the pretreatment of purified water system. In the system design, the selection of multi-media filter needs to focus on the analysis of turbidity and silicide content in raw water. When the turbidity of raw water is high and the content of silicide is high, it is necessary to put an appropriate amount of flocculant into the front end of the multi-media filter to reduce the turbidity of the water and remove the silicide by coagulation, so as to further improve the treatment effect of the multi-media filter.
    但值得注意的是,这种混凝剂物质有可能泄露至后续的处理单元,会影响纯化水的水质。因此,一旦有使用到絮凝剂,必须严格检测残留量并验证,降低对产水水质的质量风险。同时,建议企业结合自身实际,尽可能提供水质较好的原水,从而降低整个系统的质量风险和运行成本。
    However, it is worth noting that this coagulant material may leak to subsequent treatment units, which will affect the quality of purified water. Therefore, once the flocculant is used, the residue must be strictly detected and verified to reduce the quality risk of produced water. At the same time, it is suggested that enterprises should provide raw water with better quality as far as possible in combination with their own reality, so as to reduce the quality risk and operation cost of the whole system.
    以上的精彩内容均有山东多介质过滤器为您提供,更多的精彩内容请查看我们的网站:http://www.jnlzsb.com,我们后续会有更多的精彩内容为您呈现。
    The above highlights are provided by Shandong multi media filter. For more highlights, please visit our website: http://www.jnlzsb.com We will have more wonderful content for you in the future.

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