**5. Lessons learned**

268 Current Issues of Water Management

returned effective samples. Average consumption of reclaimed water per factory is 291.55CMD, 48.86% to the total consumption of industrial water. Table 5 shows statistics of

> Average potential maximum consumption of reclaimed water per factory (CMD)

Average ratio of factories willing to accept

Process Water 24% 160 Boiler Feed Water 20% 50 Cooling Water 76% 65.75 Washing Water 58% 10.6 Firefighting Water 51% 5.2 Total consumption of reclaimed water 291.55 Note: Average potential maximum consumption of reclaimed water per factory = Total potential

Table 5. Statistics of potential reclaimed water application and consumption by factories

Table 6 shows values of model parameters of the Scenario. In which MAA indicates surveyed "T" price (N.T.D./ton); MAW indicates the product of ratio of maximum reclaimed water to total industrial water acceptable to the factory multiplied by the total consumption of industrial water in 2008(CMD); MAN indicates the amount of washing water the factory is willing to use(CMD). If the MAA coefficient is negative and MAW and

The surveyed "T" price (N.T.D./ton) MAA -0.20879 0.099374 -2.10108 0.035634

The study assumed the scenario "the government guarantees that quality of reclaimed water conforms with city water specifications, no interruption of supply 365 days a year with assured quality and loss indemnification on supply interruption," and that "dedicated pipeline to be installed for reclaimed water delivery, plus with free-of-charge pipe connection," and that "50% deduction on wastewater treatment charge if total consumption of reclaimed water exceeds 40% of total industrial water consumption of the company",

factory is willing to use (CMD) MAN 2.73873 1.01492 2.69846 0.006966

Variable explain Variable Name Coeff. Std.Err. t-ratio P-value

Intercept ONE 0.170238 1.04835 0.162387 0.871001

MAW 0.005193 0.002371 2.19045 0.028491

potential usage and consumption of reclaimed water by factories.

consumption of reclaimed water / number of factories that are willing to accept

MAN coefficients are positive, the theoretical expectation is deemed met.

Application of reclaimed water

The amount of washing water the

The product of ratio of maximum reclaimed water to total industrial water acceptable to the factory multiplied by the total consumption of industrial water in 2008 (CMD)

**4. Discussion and conclusions** 

Table 6. Value of model parameters of Scenario

The result of this study implies that the appropriate water management policy design could really encourage the use of reclaimed water. In other word, appropriate water management policy design could change the structure of water use. Well water management policy or incentives mechanism, such of deduction on wastewater treatment charge, could bring about good water conservation patterns. Furthermore, the willing to pay for the reclaimed water price is higher than the city water also show that the wastewater reclamation industry have good future prospects. If there has appropriate water management policy, the reclaimed water could be good water source other than diversion from river, reservoir water, building new reservoir or groundwater extraction.
