Addendum to Regional Water Supply Facilities Plan Final Report (April 2011) Page: 9-2
256 p. : ill. ; 28 cm.View a full description of this report.
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APRIL 2011
Conceptual designs with design data
were developed for each of the four
alternative treatment processes. Also,
three alternative building arrangement
layouts were developed. Based on the
conceptual designs, conceptual capital
costs and annual O&M costs were
developed for each alternative treatment
process and four treatment capacities
were considered. Cost comparison
analysis was performed based on annual
costs. Annualized capital cost and
annual O&M cost were summed to
obtain the total annual cost for each
alternative and treatment capacity. Life
cycle present value analysis was not
performed for the purpose of this study.
Conclusions
The following conclusions were
obtained:
1. The untreated water has a high TDS
of approximately 2000 mg/. It is
considered very hard with a hardness
of approximately 600 mg/L as
CaCO3 and brackish based on the
high TDS and chloride in the water.
2. SITE III on the Main Floodwater
Channel is the most promising site
for water diversion and treatment
site, which has the most reliable
water supply source and has the
potential for future expansion.
3. The preferred treatment process
alternatives are the integrated
membrane systems: (1) ACTIFLO
followed DMF and NF, and (2)
ACTIFLO followed DMF and RO
with consideration of both
performance and costs.
4. The proposed development strategy
and treatment processes are
technically and economicallyfeasible to develop the drainage ditch
water to meet some of the future
water needs in the Hidalgo County.
Recommendations
1. Conduct a pilot study to determine
the optimal blending ratio for
Alternative C that ACTIFLO is
followed by DMF and NF and
alternative D that ACTIFLO is
followed by DMF and RO.
2. Should be included in the TWDB's
2010 Region M Water Plan for the
Rio Grande area as a viable water
development strategy.0
REGIONAL WATER SUPPLY FACILITIES PLAN
9-2
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Civil Systems Engineering, Inc. Addendum to Regional Water Supply Facilities Plan Final Report (April 2011), report, May 2011; Houston, Texas. (https://texashistory.unt.edu/ark:/67531/metapth839161/m1/254/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.