P18461: Solar Powered UV Water Purification
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Problem Definition

Table of Contents

Team Vision for Problem Definition Phase

Background

Globally 842,000 people die every year from poor hygiene and sanitation. In Kenya alone 37% of the population do not have access to clean water and 70% do not have access to any form of improved sanitation. With lack of safe water sources and sanitation this leads to multiple waterborne diseases such as diarrhea, cholera, dysentery, typhoid, and polio. One of the best ways to combat these waterborne diseases is through UV purification which in operation effectively neuters the diseases. UV purification works by exposing the contaminated water to UV-C light which irradiates the water and denatures the waterborne diseases however the water must be clear as the UV cannot penetrate particulates.

Project Summary

Water purification systems allow for the removal of unwanted constituents within a sample of water. Unwanted constituents include suspended particles, parasites, bacteria, algae, viruses, fungi, etc., which make water unsafe for human consumption. Water is validated for human consumption based on international and governmental standards, which define acceptable levels of contaminant concentrations. Conventional inexpensive water purification systems are generally either importable, fragile, non-robust, and/or non-sustainable.

The goals of this project are to leverage existing inexpensive water purification techniques to produce a cost-efficient, portable, and durable system that can produce purified water from standing surface water with variable contaminants. This purification system will be designed for use in impoverished regions with little to no modern, industrialized, infrastructure; therefore this system will be made to be easily operable, and will utilize solar power. The expected outcome of this project is a functional prototype with a study validating the purity of resulting water.

For a project description provided by the customer; review the document attached Here.

Use Cases

System power high level flow chart

System power high level flow chart

System validation high level flow chart

System validation high level flow chart

Project Goals and Key Deliverables

Expected end result of the project, what the customer can expect to receive at the end of the project.

Project Goals

  1. Lightweight
  2. Unified packaging
  3. Reusable
  4. Automated
  5. Simple maintenance
  6. Robust

Key Deliverables

  1. Functional prototype which can be the basis for a product that will be manufactured
  2. Documentation showing design process and test data
  3. A portfolio of potential designs for upscaled products
  4. User’s guide for operation and maintenance

Customer Requirements (Needs)

Current Customer Requirements

Current Customer Requirements

For Live Version of Engineering Requirements Click: Here

Engineering Requirements (Metrics & Specifications)

Current Engineering Requirements

Current Engineering Requirements

For Live Version of Engineering Requirements Click: Here

Constraints

Constraints Criteria
Cost <= $500
Dimensions Can Fit into a Backpack
Weight <= 15 lbs
Flow Rate >= 0.5 gal/hr
Water Purity/Quality Meets USEPA and NSF/ANSI water treatment standards

Benchmark

Since technologies in the field of water purification are well so well defined, the goal of this project is to leverage these existing technologies, theories, and methods to combine them in such a way that most optimally satisfies our customers' needs. Between constraints placed on this project, and the technologies of this field, it has been deemed most beneficial to not only look at variables from a Full System level, but also from a Component level. Instead of aimlessly sifting through components, however, we aim to direct our search by investigating component parameters of full systems. Please refer to the following tables and figure in the benchmark section below.

Full System Parameters

Parameters that will be used to benchmark FULL SYSTEMS

Parameters that will be used to benchmark FULL SYSTEMS

Component Parameters

Rough high-level system overview broken down into components for benchmarking

Rough high-level system overview broken down into components for benchmarking

Parameters that will be used to benchmark SYSTEM COMPONENTS

Parameters that will be used to benchmark SYSTEM COMPONENTS

Current Benchmark

Current Full Systems Benchmark

Current Full Systems Benchmark

For Live Version of Full System Benchmarking Click: Here

House of Quality

For Live Version House of Quality Click: Here

Risks

Risk Management Assessment

Risk Management Assessment

Design Review Materials

Presentation

For Live Version Problem Definition Presentation Click: Here

Action Items

Plans for next phase


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