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Science Exploration

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Tiffany Cao

on 8 April 2014

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Transcript of Science Exploration

Science Exploration


We brainstormed many ideas of ways to purify RIT's swamp water.

Get rid of


* Bacteria

* Viruses

* Chemicals

* Used drinking water to establish physical goal and target
Water Test Kit Results
RIT Fish Pond Water
Free Chlorine = 0.23ppm
Total Chlorine = 0.23ppm
pH = 7.3
Total Alkalinity = 149ppm
Calcium Hardness = 140 ppm
Cyanuric Acid = 4 ppm
Copper = 0.1 ppm
Iron = 0.3ppm
RIT K-Lot Pond Water
Free Chlorine = .28ppm
Total Chlorine = .28ppm
pH = 7.20
Total Alkalinity = 156ppm
Calcium Hardness = 194ppm
Cyanuric Acid = 3ppm
Copper = low
Iron = .5ppm
All of these test were done with the
the water test kit Color Q. They are all
measured in parts per million (ppm).
Design Ideas/ Sketches

Main Goal:
Purify swamp water from the edge of campus to make it safe for consumption.
Create a portable, cost-efficient water filter.

What makes water safe?

Concentration of harmful chemicals must align to regulated values
Harmful bacteria and viruses must be removed

Clean Water Regulations
RIT Drinking Fountain
Free Chlorine= 0.54 ppm
Total Chlorine= 0.75 ppm
pH= 7.6
Alkalinity= 114 ppm
Calcium Hardness= 161 ppm
Cyanic Acid= 7 ppm
Copper= 0.1 ppm
Iron= 0.0 ppm
Lead concentrations < 15 ppb
Copper concentrations < 1.3 ppm
Arsenic concentrations < 10 ppb
Alkalinity < 500 ppm
pH must be 6.5- 8.5
Chlorine ≤ 4 ppm
Barium ≤ 2 ppm
Fluoride ≤ 4.0 ppm
Mercury ≤ 0.002 ppm
Nitrate ≤ 10 ppm
Nitrite ≤ 1 ppm

Purifying Water by using UV light
Destroys biological material by disconfiguring DNA, which makes it difficult to either replicate DNA or transcribe mRNA from the strand

PROCEDURE- Fill water chamber, turn on unit, let run

PROS- Highly effective eliminates biological factors without adding chemicals to water

CONS- Needs power you have to control the flow rate of water
We've concluded that ultrafiltration is a good procedure, but not cost effective.
Agar Plates Test
-Used to detect presence of coliform in these water samples
Drinking and distilled water were used as a negative control
Pond Water
Pond + Copper Filter
UV + Copper Filter
Carbon, Clorox, + Physical Filter
Chlorine + Copper Filter
What we learned
presence of many contaminants
Chlorine and UV are effective treatments
Carbon filters are effective treatments
Next Steps...
need a physical filter with smaller pores
finalize methods to purify water
UV dosage
Carbon filter sustainability
create prototype
Brainstormed ideas
Cl vs. I
UV light
Physical Filter
Vortex filter

Final Design Idea
Portable Backpack
Water Bladders
Detachable solar pannel and battery
Carbon chamber
UV light tube
How it will work
1. Dirty water bladder
2. Physical filter
3. Carbon chamber
4. UV Tube
5. Carbon chamber
6. Clean water bladder
Remaining Questions
Physical Filter pore size?
How to pack carbon?
How much carbon is needed?
Type and time of UV exposure?
Physical Filter
Leaving the dirty water bladder
Before/after entering carbon chamber
Needed in order to contain carbon and large particles
Carbon Chamber
Needed to filter smaller and oganic chemicals from dirty water
How much carbon is needed?
How to compact carbon into portable tight space?
UV Light Tube
UV-C is needed to kill bacteria and decompose viruses
Proposed Idea
UV light tube (plastic or glass) holding water
Surrounded by mirrored tube with UV leds
Need UV-C in portable LED
Exposure time? - Experiments
Current Testing
Exposure times of 405nm UV light
Water treated and cultured
Remaining Steps
Conclude tests
Finalize design details
Build prototype!
Test effectiveness
Imagine RIT!!

Why a backpack?
Holds water bladders easily
Space efficient
Room for storage for other materials
Good camping, hiking, etc.
Two water bladders
one contains dirty water
one contains clean wate
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