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

62 New Conception and Decision Support Model for IUWS
Table 23: Water supply options for UD – with DUAL system (continued)
no. water source
(with quality)
+direct reuse
networks X
(+ trmt. stage)
networks Y
(+ trmt. stage)
reclaimed water is directly supplied in networks Y
application conditions
6 sp.nk. (A(1)) A(1) � A(1) used wa. � B/C CA supplies insufficiently
7 sp.nk. (B/C) B/C � A(1) used wa. � B/C
[1] (B/C � B/C)
8 sp.nk. (A(1))
+ loc.src.
9 sp.nk. (A(1))
+ loc.src.
10 sp.nk. (B/C)
+ loc.src.
11 sp.nk. (B/C)
+ loc.src.
A(1) � A(1)
loc.src. � A(1)
A(1) � A(1)
loc.src. � A(1)
B/C � A(1)
CA supplies insufficiently,
if reclaimed water is inadequate,
sp.nk. complements it
used wa. � B/C CA supplies insufficiently even only
for Qual. A, and loc.src. are the
good addition
used wa. � B/C
loc.src. � B/C
used wa. � B/C
[1] (B/C � B/C)
used wa. � B/C
[1] (B/C � B/C,
loc.src. � B/C)
CA supplies insufficiently,
reclaimed water is inadequate,
loc.src. can supplement, but hard
to treat into Qual. A
CA supplies insufficiently,
loc.src. are easier treated into
Qual. A,
if reclaimed water is inadequate,
sp.nk. complements
Qual. A is very small portion,
harder to treat loc.src. into Qual. A
than sp.nk.
sp.nk. sumplements reclaimed
water in the first, and then loc.src.
Abbreviations: loc.src. – local sources; trmt. – treatment; Qual. – Quality;
sp.nk. – superior networks, indicates water from networks of superior water entity
[1]
the water sources in the parentheses are considered as the additional source for the emergency
situations.
Explanation: local water sources have the raw water quality.
It is possible for WUU to have either single or dual water system, as well. Its main water
source is the water from the networks of its superior water entity. The local water source can
be the roof-water, and the direct non-potable water reuse is also the suitable option for WUU.
Likewise, the water supply options for WUU with single and dual systems are given in Table
24 and Table 25, respectively.
There can be more possibilities of water supply systems for CA, UD and WUU. However,
those skipped ones are neither reasonable nor realisable. The options given in the tables
cover the most situations. In reality, each project has certain boundary conditions that screen
out the improper options, whereby the system options for each project are quite limited.