Emitters and filters performance under treated sewage water reuse with drip irrigation
Mhaske, A. R.
An experiment was carried out under open field conditions on black cotton soil at Agriculture College, Nagpur to study the performance of different types of emitters and filters while using irrigation water of different qualities for different periods of operation. Eight treatments comprising of irrigation water quality as main treatment [domestic treated sewage water (DTSW) from a phytorid sewage treatment plant and deep open well water (WW)], sub-treatments comprising of emitter type (inline and online) and time of operation (60 h and 120 h) of drip system were planned. Gravel filter, followed by disk filter, was used to filter water of different quality. Partial clogging percentage of gravel filter was higher in case of DTSW. Emission uniformity coefficient decreased rapidly in DTSW compared to WW. Mean discharge reduction percentage was 13.23% in gravel filter, and 18.72% in disk filter. Emitter’s emission uniformity percentage in WW was better than in DTSW. The manual operation time (i.e. time interval between two consecutive maintenance events) for disk filter was shorter than gravel filter in both treatments. Domestic treated sewage water could be used for crop production with proper maintenance of filter, lateral and emitters.
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