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Irrigated Cropping for Land Treatment and Effluent Reuse method was developed for the therapy and reuse of secondary sewage effluent (Gardner et al., 2001; Jayawardane, 1995). The FILTER approach combines using nutrient-wealthy wastewater for intensive cropping with organic and physio-chemical filtration by way of the soil to a subsurface drainage system. It was initially examined on eight 1-ha experimental plots and subsequently trialled on 4 (four-ha) commercial-scale plots. FILTER plots have been constructed by deep ripping to around 1m depth and installing the subsurface drainage system at this depth. The sewage effluent was utilized as flood irrigation on the high end of the FILTER plots. Besides nutrient elimination, other helpful effects had been lowered suspended solids, oil and grease, and an increased N/P ratio within the drainage water . An apparent drawback is the fee issue and gear required for the set-up of the system, even at smaller scale. However, there may be choices for low-value adaptations. Observations from bigger urban settings in developed nations present that effluent remedy by land utility for cropping and forestry is often much less economical than other remedy techniques. This could be as a result of increasing economic land value close to cities, but particularly the necessity in temperate climates to cater for the chilly season when soils could be sealed by ice, with crops not rising or in dormant state (Jayawardane et al., 2001). In addition, the place soils have restricted inner drainage capability, soil degradation can happen by way of waterlogging and salinization (Jayawardane et al., 2001; Su et al., 2005). Hence most land-disposal processes are depending on freely draining soils and the existence of some diversion construction to retailer effluent during periods of low absorption capacity or plant water demand. To keep away from excessive or unbalanced additions of specific nutrients to wastewater-irrigated soils and crops, farmers can choose crops that are less sensitive to high nutrient levels or which can take advantage of excessive quantities of P and N. Higher N-ranges are thus more welcome in farms specializing in leafy greens than grains. In addition, fodder grass is well suited to wastewater-irrigation and acts as a scavenger for N and P utilized through wastewater. Reduction efficiencies of 84 per cent for N and fifty four per cent for P have been reported from wastewater irrigated pastures in Zimbabwe (Nhapi et al., 2002). However, land- and soil-based choices depend not
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