ARC 504 SPRING 2020 Yidian Liu Instructor: Alejandro Zaera Polo
PLASTIC CURRENTS
RECYCLING WATER-BORN PLASTICS IN BALLONA CREEK, L.A.
For hundreds of years, the ocean was seen as a site for resource extraction. In the prevailing oceanic industries like fishing, oil extraction and transportation etc, the ocean was severely exploited with no remediative measures. Furthermore, as one of consequences of industrialized society, the pervasive use of plastic poses the greatest threat to ocean ecologies. Due to the difficulty of recycling plastic and failures in global waste management, millions of tons of plastic enter the ocean every year via water systems and end up floating on the ocean surfaces and foming massive plastic patches. This project proposes an ocean future by looking into the marine environment with
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a sense of preservation rather than extraction. Los Angeles has few of the most polluted rivers in the US. By focusing on the site of Ballona Creek in LA, this project aims to remove plastic debris before they enter the ocean. The proposed architecture is divided into 2 parts, a private recycling center where ocean plastics are collected and sorted; and a public foot bridge made of recycled plastic panels, where the public can observe the entire recycling process. By integrating the two parts, the architecture intends to reverse the damage imposed by anthropogenic activities and raise greater awareness for ocean plastic pollution.
OCEAN PLASTIC POLLUTION
OCEAN PLASTIC SOURCE MAIN SOURCE OF OCEAN PLASTIC
SUBTROPICAL GYRES
GLOBAL CURRENT MAP (WINTER)
GREAT PACIFIC GARBAGE PATCH
GREAT PACIFIC GARBAGE PATCH Estimated surface area of 1.6 million square kilometers Method: fleet of 30 boats, 652 surface nets and two flights over the patch to gather aerial imagery of the debris. Estimated mass of plastic to be approximately 80,000 tonnes
PLASTIC ROUTE TO THE OCEAN
LAND-BASED PLASTIC CONTRIBUTES 80% OF PLASTIC IN OCEAN
RIVER POLLUTION
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SITE CONDITIONS BALLONA CREEK
WATER BODY POLLUTION
BALLONA CREEK, LA
CURRENT DRAINAGE SYSTEM
CURRENT DRAINAGE SYSTEM
LACK OF SUFFICIENT TREATMENTS
FIRST BARRIER SOLID
SECOND BARRIER FILTERING
BOOM SYSTEM
FIRST BARRIER SOLID
SECOND BARRIER FILTERING
BOOM FLOATER+ SCREEN
BOOM SYSTEM
(Source: Scientific Reports volume 8, Article number: 4666,2018)
FLOATER
3M
TENSION CABLE SCREEN BALLAST WEIGHT
INTERCEPTOR: 50,000 KG/DAY 25800 KG / 50,000 KG/DAY = 12 HOURS
RIVER BASED PROTOTYPE
OCEAN CLEANUP MODEL
SECOND BARRIER: MICROPLASTIC
MEGAPLASTICS
MACROPLASTICS
MESO PLASTICS
MICRO PLASTICS
H:hard plastic, plastic sheet and film N: encompasses plastic lines, ropes and fishing nets P:pre-production plastic pellets F:pieces made of foamed plastics. (Source: Scientific Reports volume 8, Article number: 4666,2018)
RIVER DISCHARGE
(Source: Reconsideration of Certain Technical Matters of the Ballona Creek Estuary Toxics TMDL and Ballona Creek Metals TMDL, 2013)
MICROPLASTIC PERCENTAGE
(Source: K. Enders et al. / Marine Pollution Bulletin (2015), 7)
(Source: Lattin et al. I Marine Pollution Bulletin 49 (2004), 291-294)
DIVERSION POOL FOR SURFACE WATER
DIVERSION POOL
ARCHIMEDES’ SCREW
PLASTIC COMPOSITION
(Source: Bight’13 (2011-2013) )
(Source: Bight’13 (2011-2013) )
BEDFORD TECHNOLOGIES
PLASTIC LUMBER
PLASTIC LUMBER WALKWAY
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RECYCLING FACILITY FOR OCEAN PLASTIC
SIMS MUNICIPAL RECYCLING
THE ROUTES
CONCEPT SKETCH
PLAN
ETFE
ETFE APPLICATION
MAIN STRUCTURE
MAIN STRUCTURE
COLLISION OF 2 SYSTEMS
UNLOADING THE PLASTICS
THE SORTING SYSTEM
INTERIOR VIEWS
DISTRIBUTING SORTED PLASTICS
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A PLASTIC WALK FOR THE PUBLIC
PLASTIC LUMBER BRIDGE
PLASTIC LUMBER BRIDGE
PLASTIC WALK FOR VISITORS
THE DIVERSION POOL
ARC 504 SPRING 2020 Yidian Liu