浇地时用的滴灌设备很容易堵塞,有哪些方法可以处理下啊 物理的化学的都行
推荐回答(2个)
滴灌带(管)堵塞问题解决方法
对于滴管带(管)的具体堵塞原因已经初步了解,为了解决堵塞问题,就要从三种堵塞原因下手。
解决堵塞原因方法主要有以下几点:
1、对于滴灌系统的水源进行预处理,防患于未然。这种方法是目前为止防止堵塞问题最有效,也是最经济的一种方法。预处理越严格,物理性堵塞发生的现象就越少。根据水质及流量,可在在水泵取水口处用铁丝网(或纱布)作数道拦污栅,安装的拦污栅目数由小到大,可分别为10-50目不等。主要用于拦截大颗粒悬浮物,如泥沙。或将河水引入蓄水池中,经沉淀泥沙后备用,并加盖避光,防止杂物进入及藻类繁殖。
2、正确合理的使用施肥罐(器)施肥。一是要选用可溶性较强的肥料,过滤器必须安装在施肥器(罐)的后端。二是滴灌系统过滤设备正常才能进行施肥,施肥结束后要用清水对系统进行至少5分钟左右的冲洗,防止管道中剩余的肥料沉淀。
3、定期冲洗滴灌管、清洗过滤器。新安装的滴灌管第一次使用时,因为安装过程中接口处可能进入杂质、泥沙。所以此时一定要要打开滴灌管(带)未端的堵头,放水冲洗1-3分钟即可。待冲洗结束后,堵好堵头,可以开始正常使用。一般情况下,当滴灌系统灌溉5次后,也应当例行一次清洗,方法同上。同时,每次灌溉前都要检查一下过滤器,开启过滤器反冲洗装置去污,及时清除过滤器滤网上积聚的杂质,防止过滤器堵塞,发现滤网损坏时一定要及时更换滤网或新的过滤器。
4、合理安装过滤系统及滴灌管(带)。首部根据经预处理的水质情况,要分别安装离心式过滤器、、叠片式、筛网式过滤器、砂石过滤器(一般不采用,其成本造价高)或组合使用,作过滤装置。通过不同类型的过滤器搭配使用,可使水质完全达到滴灌系统的使用标准。如在棚头阀门后再安装一个小流量的筛网式过滤器,作二级过滤处理,可大大提高滴灌系统防堵塞的安全性能。田间铺设滴灌管时,可将滴灌管的滴头朝上布置,即使管道内存在泥沙,也会沉淀到滴灌管底部,不会堵塞滴头。
5、化学防堵处理。如滴灌发生肥料等化学堵塞,必要时可采取酸液清洗,可同时起到消毒、灭菌、抑制和消灭水中的藻类和微生物的效果。常用类型有高氯酸、硝酸、硫酸等。使用时将酸液pH值调到5.5-6.0,使用时必须严格控制酸液的使用浓度,避免对作物造成危害。酸液清洗时注意调低系统灌溉压力,以减缓流速,提高酸洗效果。清洗结束后必须在进行清水灌溉一段时间,即可清洗管道,也可降低作物根部附近土壤酸性程度。
首先可以在进水口处安装过滤器,将大颗粒杂质过滤掉,然后可以定期清洗设备。
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