Plastic Currents_Technical Report

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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


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