Masterfoods E

8/7/2019 Masterfoods E

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Masterfoods E.E.S. Project

With:

Freddie Stevens-SmithTiffany Renwick

James Farley-Nicholls

Felicity Milton


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THE DESIGN OF

A WATER CLEANINGSYSTEM.


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THE TEAM:

Tiffany Renwick

Freddie Stevens-

Smith

Felicity Milton

James Farley Nicholls


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Project brief:

Raw materials are delivered to site in a

tanker and transferred to a fixed site. To

allow maximum recovery of materials, awater-launched pigging system is used.

This project should design a cleaning and

recycling system for the water.


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Introduction:

Masterfoods

a subsidiary company of Mars

produces a range of goods from pasta sauces to

pet-food

uncooked meats are stored and then processedto produce canned (and pouched) goods at the

Melton Mowbray factory


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the raw waste meat we deal with


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Meat arrives at Melton in varying forms

At present, the water used comes fromRiver Trent

The water is cleaned after use on site,

and then returned to Severn Trent.


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This must be changed for a number

of reasons;

ISO 4001

COST

INCREASED CAPACITY.


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We have split up ourdesign into 3 stages;

Stage 1; Coarseseparation

Coarse separation

Stage 2; Fineseparation

Stage 3; Waterpurification


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REQUIREMENTS:

The water quality after treatment must be: pH - 7.5 to 8.5

Turbidity -


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Stage 1

Coarse separation


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TYPE OFSYSTEM:

Enclosed

Open

MultipleSingle

Continuous

Batch

Brainstorm


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Typeofsystem:

Batch or continuous?

Batch Continuous

+ve Flexibility of

methods

+ve Most space

efficient

+ve Most efficient

way of

treatingH20

+ve no extra outlay,

i.e. holding

tanks

+ve Flexibility of

volume

+ve No stagnation

of water

+ve creates safetybuffer -ve need holdingtanks

+ve easier to

change water/

filters etc.

-ve need to

constantly vary

water usage.


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WAYS TO REMOVE

THE VISIBLEMEAT PARTICLES

IN THE WATER:

Centrifugalseparator

Settling

Gravel/sandfilter

Pressurised filters

Multiplefilters

ScreensCoagulatio

n


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CENTRIFUGATION


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MULTIPLE FILTERS


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Flotation

Initial scoop design


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Cleaning

Methods for

thefilters

Back wash

method

Rotate and

spray

water

Sliding

scraper

across the

filter

Sponge themeat off

Air blast

Rotate and

drop

Brush with

water outlets


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Refinements;

The majority of this was testing, done

during our E.E.S. residential at the

University of Surrey in January.


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Experimenting at Surrey;

The testing model.


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Testing a combination of filters. The filters after a test run.


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Testing at Surrey continued;

Testing the scoop idea.


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Prototypemanufacturing;


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The chosen idea:

These are CAD

drawings of thefilter system

that we decided

upon:


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Stage 2

Fine separation


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AIM; to remove the smaller particles, and as

such make the water more or less colourless,

ready for the final stage of the process.

INITIALIDEAS; activated carbon, gravel andsand filters, distillation, ionisation, ultra filtration

and reverse osmosis.

CHOSEN IDEA; The chosen idea was to use

gravel and sand filters.


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WAYS TO REMOVE

THE VISIBLE

MEAT PARTICLES

IN THE WATER:

Centrifugalseparator

Settling

Gravel/sandfilter

Pressurise

d filters

Multiplefilters

ScreensCoagulatio

n


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Stage 3

Water purification


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Documents

Masterfoods E