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Performance of non woven synthetic fabric and disc filters for fertirrigation water treatment

机译：无纺布和盘式过滤器在施肥水处理中的性能

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摘要

Obstruction of emitters caused by the presence of solid particles in the water raises the cost and maintenance of trickle irrigation systems, and might compromise their utilization. This research was performed through test fields, with the objective of evaluating the performance of a disc filter (130 microns) and a non woven synthetic fabric filter on the removal of physical, chemical and biological impurities from the irrigation water, which may cause emitter obstruction during fertirrigation processes. The evaluation criteria of the impurities present in the irrigation water, were based on studies performed on trickle irrigation systems. Specifically, physical, chemical and biological parameters analyzed in the inflow and outflow water from both filters were: pH, turbidity, total suspended solids, salinity, total iron, sulphites, manganese, algae and bacteria. Results pointed to chemical factors, which presented medium clogging risks to the emitters; those factors were: pH, total iron and sulphite concentration. All the other parameters of water quality did not present clogging risks. A comparative analysis of head loss evolution, according to the filtered volume, was also atempted Non woven synthetic fabric filter presented a higher evolution when compared to the disc filter.
机译：由于水中存在固体颗粒而造成的排放物阻塞，增加了滴灌系统的成本和维护，并可能损害其利用率。这项研究是通过测试领域进行的，目的是评估盘式过滤器（130微米）和非织造合成纤维过滤器在去除灌溉水中可能会造成排放物阻塞的物理，化学和生物杂质方面的性能。在灌溉过程中。灌溉用水中杂质的评估标准是基于滴灌系统进行的研究。具体而言，两个过滤器的流入和流出水中分析的物理，化学和生物学参数为：pH，浊度，总悬浮固体，盐度，总铁，亚硫酸盐，锰，藻类和细菌。结果指出了化学因素，这些化学因素给排放源带来了中等堵塞风险；这些因素是：pH，总铁和亚硫酸盐浓度。水质的所有其他参数均不存在堵塞风险。根据过滤后的体积，也可以对压头损失的演变进行比较分析，与盘式过滤器相比，非织造合成纤维过滤器的发展更高。

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