Chapter 3 Decision Support Model (IUWS-DSM) - Tubdok

Chapter 3 · Decision Support Model (IUWS-DSM) 61
water source. Being two different situations, the water supply options for UD with single and
dual systems are described in Table 22 and Table 23, separately.
Table 22: Water supply options for UD – with SINGLE system
no. water source
(with quality)
supplied quality
(+ trmt. stage)
1 sp.nk. (A(1)) A(1) � A(1) CA supplies sufficiently,
application conditions
2 sp.nk. (B/C) B/C � A(1) CA supplies sufficiently,
the demand of Qual. A (or A+B) is dominant
3 sp.nk. (B/C) B/C � B/C CA supplies sufficiently
the demand of Qual. A (or A+B) is minor
4 sp.nk. (A(1))
+ loc.src.
5 sp.nk. (B/C)
+ loc.src.
6 sp.nk. (B/C)
+ loc.src.
A(1) � A(1)
loc.src. � A(1)
B/C � A(1)
loc.src. � A(1)
B/C � B/C
loc.src. � B/C
CA supplies insufficiently,
loc.src. are the good complementary sources
the demand of Qual. A (or A+B) is dominant
CA supplies insufficiently,
and loc.src. are the good complementary sources,
and the demand of Qual. A (or A+B) is dominant
CA supplies insufficiently,
loc.src. are the good complementary sources
and the demand of Qual. A (or A+B) is minor
Abbreviations: loc.src. – local sources; trmt. – treatment; Qual. – Quality;
sp.nk. – superior networks, indicates water from networks of superior water entity
Explanation: local water sources have the raw water quality.
Table 23: Water supply options for UD – with DUAL system
no. water source
(with quality)
Sys. Base
networks X
(+ trmt. stage)
networks Y
(+ trmt. stage)
application conditions
1 sp.nk. (A(1)) A(1) � A(1) -- no need of dual system
2 sp.nk. (B/C) B/C � A(1) B/C � B/C CA supplies sufficiently,
dual system is more economical
3 sp.nk. (A(1))
+ loc.src.
4 sp.nk. (B/C)
+ loc.src.
5 sp.nk. (B/C)
+ loc.src.
A(1) � A(1) loc.src. � B/C CA supplies insufficiently,
loc.src. are treated into B/C,
as loc.src. are not easily treated
into Qual. A, and the demand of
Qual. A (or A+B) is minor
loc.src. � A(1) B/C � B/C CA supplies insufficiently,
loc.src. are treated into Qual. A,
as loc.src. have good raw Qual.,
and the demand of Qual. A (or
A+B) is minor
B/C � A(1) loc.src. � B/C CA supplies insufficiently,
harder to treat loc.src. into Qual. A
than sp.nk., and the demand of
Qual. A (or A+B) is minor