Designed By: Darla Dupuy Londia Weatherspoon Shedrick Ross Hunter Aydell Lift Station Filtration System Instructor: Cris Koutsougeras Advisor: Ed Rode’ ET 494 Spring 2014

Objective Tangipahoa Parish Sewer District No.1 requested an improved design/method of cleaning their 82 lift stations. This design should be mobile and can be attached to the back of their company trucks. It should also be designed to empty the non- digestible solids into a barrel to be dumped at a landfill.

y2/2_LiftStationOverview.pdf

Lift Station Visit Wednesday March 5, 2014 Tangiphoa Parish Sewer District Vice President, James Harper, gave us a visual look at what the inside of a lift station looks like and how it works.

Lift Station or Wet Well

Problems Non-digestible would get trapped in the pump Things would have to be taken out manually by someone Non-digestible would be to big to get out of the lift station Preventing the lift station from working properly Prevented the cycling from different resident homes, companies, etc. Pipes were getting clogged

Methodology Study on the lift station Design a mobile storage tank with a filtration device Design a water pumping system for mobile storage tank. Discovering and designing a method for removing the non-digestive solids from the storage tank will need to be completed.

Deliverables: Motor Compressed Pump Storage tank emptying device Mobile Storage Tank & Filtration Device Waste Gate and Guide System

Motor Compressed Pump.

Pump Drawing

Storage Tank Emptying Device

Extract waste from storage tank Tank will remain horizontal at all times Will similar to a vending machine Standard flight auger (eta.com) Pitch same as diameter Low force application

An example that most can relate to would be the way a vending machine works. My design will look different but operate mostly the same. This is how the inside of the tank will look if looking in from the top. Underneath there will be a drain going to a finer filtration process then back to the lift station.

Looking in from either end of the tank, if it was open this is what you would see, the in tank auger being supported by bearings at both ends.

Keeping the inside of the tank clean

An electric motor Belt drive

Filtration Device

It will be a bio separator. Sand P-gravel and gravel Charcoal Perforated sheets This method is similarly used in Sewerage Treatment Plants to purify the water.

Waste Door

Top-hinged door Water-tight seal Automatic open/close

Double Acting Pneumatic Cylinder Equations Force exerted on outstroke – F = p π (d d 2 2 ) / 4 Where p=Pressure (psig), d 1 =full piston bore (m), d 2 =rod diameter (m) Force exerted on instroke – F = p π d 1 2 / 4

5 Way, 4 Port Solenoid Always pressurized Dual exhaust ports Readily available 12Vdc

Pneumatic System

Pneumatic Cylinder

Double Acting Cylinder

Door Safety & Maintenance Actuator controls away from door Pneumatic cylinders mounted outside of the tank

Waste Guide

Predictable dispersion V-shaped

Mobile Storage Tank

Research on aluminum tank trucks and how they are built. These tanks are designed to transfer non-digestible solids and liquids into the tank to be disposed of. They are able to withstand the pressure of the liquids for long periods of time. The material of the tanks is designed to be able to prevent rusting while carrying liquid and non- digestible solids to and from the disposal area.

Experiments

Filter Experiment

Motor Compressed Pump Experiment

Waste Door Experiment

Timeline February Research lift stations (group) March 5, 2014 meeting with the Vice President of the Tangipahoa Sewer District and to study the inside of a lift station. Research bio filters (Darla) Prepare a rough estimate on materials and design specifications (Darla) Research pumps and compressor motors (Londia)

Prepare a rough estimate on pumps and compressor motors (Londia) Research scoops, vending machines, and auger Prepare a rough estimate on augers (Hunter) Research mechanical doors on truck tanks (Shedrick) Research guide systems (Shedrick) March 17, 2014 Sewer District Board Meeting for approval (group)

April Filter experiment (group/Darla) Motor pump experiment (group/Londia) April 4, 2014 Interm Report Presentation (group)

Waste door and guide system experiment (group/Shedrick) Trailer experiment (group/Darla) April 21, 2014 Sewer District Board Meeting (group) May Final Report Presentation (group)

August Research for disposal container Hydraulic lift idea Research on hydraulic lift September Estimates for material for trailer