week 11 class notes

Hospitality Facilities Design and Planning

Week 11Water and Wastewater Systems

Program today

• 4:00-5:15 Jason Lisai – Sugarbush Resort

• 5:30-6:00 Water and Wastewater Systems

• 6:00-6:45PM Project update from all teams

Uses of water in a hotel

• Drinking• Sanitary use• Cleaning• Cooking• Laundry• Pools, hot tubs• Landscaping• Fire Safety• Etc etc etc – you get the point!

Water users

• What type of hotel uses most water?• How much? Total or per day?

Water turns to Sewer?

• Often hotels pay sewer fees based on water consumption. Is that correct?

– WHAT GOES IN, GOES OUT?

Water sources

• City versus remote resort• Hooking into the town water pipeline

Durrat Al Bahrain Desalination Plant, Bahrain

Cost: $ 30M

• Human uses: drinking, bathing, cooking, washing

• Equipment uses: kitchen, laundry, spa, pool, heating and cooling, landscaping

Water use reduction

• Laundry: example AQUARECYCLE– 1,200 room Hilton in Houston, Texas monthly

water use down to 157,000 gallons from 630,000 or a drop of 75%

Commercial – TU 21-60 (WSC 3, 5, 6):

Consumption is no longer included with the basic charge. The volume charges are applied to all usage. Rate Meter Size

(Inches) Basic Water Charge Basic Sewer Charge

Basic Charge

(0 consumption) 5/8 $4.51 $7.93

3/4 $4.65 $7.93

1 $5.59 $8.33

1.5 $8.46 $9.66

2 $9.96 $10.06

3 $26.36 $18.02

4 $35.93 $20.41

6 $61.58 $29.17

8 $160.79 $70.84

10 $160.79 $86.10

Volume Charge All + $3.56 per 1,000 gallons + $5.04 per 1,000 gallons

Houston Hilton Example

• $3.56/1000 gallons water cost• $5.04/1000 gallons sewer cost• Savings:

– 473 x $3.56 water = $1,700– 473 x $5.04 sewer = $2,400– Total per month: $4,100 or almost $50,000 per

year

Wastewater – two kinds:

Storm = • Rain water removal

• Goes into local streams

Sanitary =• Waste product from the

hotel• Goes into wastewater

treatment facility (some properties have own)

Water Quality

• Drinking water: Some systems in Vermont using well or spring water -> regulations: testing

– Primary concern: contamination (too close to septic system) or fertilizers, pesticides, etc.

– Secondary: hard water: use of water softeners

Legionnaire’s Disease

• http://www.youtube.com/watch?v=KAgA-3l3P_0

Hot Water

• Uses:– Heating of building– Guest use– Laundry, kitchen, etc.

– Importance of mixing valves and limiting temperature

http://www.tap-water-burn.com/pamphlet/abstract.htm

Swimming Pools

• Complicated• Balance between water temperature and

acidity/alkalinety (pH balance)• Common treatments: chlorine and more often

ozone, ionization and other chemicals• Better: saline treatment

Saline Pool Water treatment

• No Chlorine• No red eyes• Environmentally friendly• Great for indoor pools (no chlorine “clouds”)

Water conservation

• All teams task:– Write a water conservation plan for our project

hotel– Present at next week’s class

Next Class

Organization of the Maintenance Department