107 Four major assumptions exist in this scenario Assumption 1 Water technology evolves by upgrading and modernising the surface water system, including improvements to surface water management Upgr[.]
107 Four major assumptions exist in this scenario Assumption 1: Water technology evolves by upgrading and modernising the surface water system, including improvements to surface water management Upgrading and modernising the surface water system in conjunction with groundwater management, micro-irrigation and agricultural support will increase (i) paddy and (ii) sugar output by 15% output each, and (iii) other crops’ output by 20% (Decision 81/2006/QD-TTg approving the national strategy on water resources to 2020) Assumption 2: Apply new technological changes in irrigation systems, such as technology from Israel applied in the highland provinces’ coffee production (investment: 33.62%), with two objectives: o Coffee output increases by 18.75%, contributing to an increase of 24.22% in agriculture and an increase of 3.68% in GDP: Coffee Output: aijT = aijS * (1 + 18.75%) % in Agriculture = 𝑊𝑎𝑡𝑒𝑟 𝑓𝑜𝑟 𝐶𝑜𝑓𝑓𝑒𝑒 𝑊𝑎𝑡𝑒𝑟 𝑓𝑜𝑟 𝐴𝑔𝑟𝑖𝑐𝑢𝑙𝑡𝑢𝑟𝑒 % increase in GDP = o ∗ 100 𝐴𝑔𝑟𝑖𝑐𝑢𝑙𝑡𝑢𝑟𝑒(𝑂𝐴)−𝐴𝑔𝑟𝑖𝑐𝑢𝑙𝑡𝑢𝑟𝑒(𝐵𝐴𝑈) 𝐺𝐷𝑃 𝑂𝐴) ∗ 100 Increase water efficiency through water usage optimisation by 60% to 90%, hence saving 320 Mn/m3 ground-water, which is equivalent to 590 Mn$ This assumption is based on Decision 81/2006/QD-TTg, 2006; resulted from research by Jain (2009) and Duong, H.S et al (2017) Assumption 3: Two options exist for this assumption o Sewage water will satisfy 20% of industries’ water demands: 1.32 Mn/m3 per day (2030), or 0.97 Mn$ o Use 20% of waste water for industry: 1.05 Mn/m3 per day is the nation’s total waste water According to New Institution (Decree 154/2016 ND-CP), the percentage of industries’ waste water equals 80% of the water supply Assumption 4: Investment in industries’ waste water treatment is assumed to increases by 10%: Investment = Fixed capital * 1.1