无机吸附剂处理黄河水滴灌抗堵塞试验研究

为了解决黄河水滴灌中泥沙处理的问题,利用黄河泥沙配置出高、中、低3种含沙量水质的试验组,采用“水梦”无机吸附剂泥沙分离装置过滤3种水质进行滴灌堵塞模拟试验,监测水质变化情况并进行滴灌的抗堵性试验;观测2种滴灌带沿程流量变化规律、滴灌系统均匀度以及系统相对平均流量变化规律.结果表明:经“水梦”无机吸附剂泥沙分离装置处理后,不同含沙量下水体中的浊度及各类污染物指标得到明显降低,其中总氮、总磷、COD,BOD、浊度平均降低了23.9%,40.3%,47.0%,38.3%,97.8%.模拟大田滴灌进行8次灌水试验,依据2种滴灌带试验过程中灌水均匀度及灌水相对平均流量的变化情况可知,在实际使用过程中应采用流量更大、滴头类型为内镶贴片式的滴灌带.

Study on drip irrigation anti-clogging experiment of YellowRiver water treated with inorganic adsorbent

To solve the sediment deposition problem when the Yellow River water was used in drip irrigation,three water mixtures with high,medium and low solid concentrations were blended by using sediment harvested from the Yellow River.Then,these water mixtures were filtered in a sediment separation device by using an inorganic adsorbent of brand“Water Dream”to carry out anti-clogging simulation tests.The variation state of water quality was monitored and the anti-clogging tests on drip irrigation emitters were conducted.The variation of flow rate along two drip irrigation tapes,the uniformity and the relative average flow rate in the drip irrigation system were observed.The results show that after the water mixtures are treated by the inorganic adsorbent,the water turbidity and various pollutant indexes at different sediment concentrations are improved,especially,the total nitrogen,total phosphorus,COD,BOD and turbidity decreased by 23.9%,40.3%,47.0%,38.3%and 97.8%,respectively.Simulation field drip irrigation is performed by employing 8 irrigation trials.According to the changes in irrigation uniformity and average irrigation flow rate in two kinds of drip irrigation tape tested,it is known that the inlaid patch drip irrigation tape for large flow rate can be adopted in practical applications.