Alexei Volkov
Plastic water balls, also known as shade balls, are small plastic spheres that are floated on top of reservoirs for environmental reasons. They are made of high-density polyethylene (HDPE) with carbon black additive to protect the plastic from ultraviolet radiation and prevent the formation of bromate, a suspected human carcinogen. These balls are partially filled with water to avoid being blown by the wind and have a diameter of about 4 inches (10 cm). They were initially developed to prevent birds from landing on toxic tailing ponds produced by mining operations, but they have since been used to reduce evaporation and improve water quality in reservoirs, such as in the Los Angeles Reservoir, where 96 million shade balls were dumped in 2015.
| Characteristics | Values |
|---|---|
| Other Names | Shade Balls, Bird Balls |
| Objective | Prevent evaporation, protect water quality, prevent birds from landing on water |
| Composition | High-density polyethylene (HDPE), carbon black additive, water |
| Diameter | 4 inches (10 cm) |
| Cost | $34.5 million to manufacture 96 million balls |
| Savings | $2 million per year, 300 million gallons of water per year |
| Replacement Cycle | Every 10 years |
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What You'll Learn
- 'Shade balls' are small plastic balls floated on reservoirs to protect water quality
- They are made of high-density polyethylene (HDPE) with carbon black additive
- They prevent evaporation, sunlight-induced chemical reactions, and birds from landing
- They were used in the LA Reservoir to save water during California's historic drought
- Edible water balls are an alternative to plastic water bottles, made with biodegradable materials
'Shade balls' are small plastic balls floated on reservoirs to protect water quality
Shade balls are small plastic balls, around 4 inches (10 cm) in diameter, that are floated on reservoirs to protect water quality. They are made of high-density polyethylene (HDPE) with a carbon black additive to protect the plastic from ultraviolet radiation. This carbon black additive also serves an environmental purpose by preventing the formation of bromate, a suspected human carcinogen, which occurs when sunlight interacts with naturally occurring bromine and chlorine added to prevent algae growth.
Shade balls were originally known as bird balls, as they were developed to prevent birds from landing on toxic tailing ponds produced by mining operations. They have since been used for water conservation efforts, most notably in Los Angeles, where 96 million shade balls were dumped into the LA Reservoir in 2015. The aim of this initiative was to improve water quality and save water through reduced evaporation.
The shade balls in the LA Reservoir are estimated to have required between 66 and 766 million gallons of water for their manufacture, a range due to the varying thickness of the balls. This has sparked a debate about the effectiveness of shade balls in water conservation, with critics arguing that the water savings may not outweigh the costs of production. However, supporters of the technology highlight the additional benefits of shade balls, such as reducing the need for chemical treatments and providing a cost-effective solution during droughts.
Overall, shade balls are a creative solution to protect water quality and conserve water resources, especially in drought-prone regions. While there may be ongoing discussions about their cost-effectiveness and environmental impact, shade balls remain a bold example of innovative thinking in water management.
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They are made of high-density polyethylene (HDPE) with carbon black additive
Plastic water balls, also known as shade balls, are small plastic spheres that are floated on top of a reservoir for environmental reasons. They are made of high-density polyethylene (HDPE) with carbon black additive. HDPE is a type of plastic commonly used for food and beverage containers, as well as water distribution pipes. The carbon black additive serves multiple purposes. Firstly, it acts as a UV stabilizer, protecting the plastic from ultraviolet radiation. This is crucial as the balls are often exposed to sunlight when floated on reservoirs. Additionally, carbon black prevents the formation of bromate, a suspected human carcinogen. Bromate is formed when sunlight interacts with naturally occurring bromine and chlorine, which is added to the water to prevent algae growth.
The use of HDPE with carbon black additive in the manufacturing of shade balls is a deliberate choice to enhance their durability and effectiveness in their intended environment. The carbon black additive plays a key role in maintaining the integrity of the plastic by shielding it from the degrading effects of UV radiation. This additive also addresses the health concern of bromate formation, making the water safer for human consumption.
The diameter of these shade balls is approximately 4 inches (10 cm), and they are partially filled with water. This partial filling serves a specific purpose: to ensure that the balls remain in place and are not blown away by the wind. The weight of the water inside helps to counter the wind's force, keeping the balls anchored on the water's surface.
Shade balls have been employed in reservoirs for various reasons. One of their primary functions is to slow down evaporation. By covering the water surface, they create a physical barrier that significantly reduces the rate at which water evaporates. This feature is particularly advantageous during droughts, as it helps conserve precious water resources. Additionally, shade balls prevent the formation of algae by blocking sunlight from reaching the water, thereby reducing the need for chemical treatments to control algae growth.
While shade balls offer environmental benefits, there is also criticism regarding their effectiveness. Some argue that the amount of water required to produce the shade balls may outweigh the amount of water saved by preventing evaporation. This criticism highlights the importance of considering the full life cycle of the technology, including the resources and costs involved in manufacturing. It is crucial to assess whether the benefits of deploying shade balls justify the investment and potential environmental trade-offs.
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They prevent evaporation, sunlight-induced chemical reactions, and birds from landing
Plastic water balls, also known as shade balls, are small plastic spheres that are floated on top of a reservoir for environmental reasons. They were initially developed to prevent birds from landing on bodies of water, particularly toxic tailing ponds produced by mining operations.
Shade balls are made of high-density polyethylene (HDPE) with carbon black additive to protect the plastic from ultraviolet radiation. They are about 4 inches (10 cm) in diameter and are partially filled with water to avoid being blown by the wind.
One of the main benefits of using shade balls is their ability to prevent evaporation. By floating on the surface of the water, they create a physical barrier that reduces the rate of evaporation. This is particularly important in regions experiencing drought, such as California, where shade balls have been used to conserve water during the state's historic drought. It is estimated that shade balls can reduce evaporation by 85-90%saving millions of gallons of water each year.
In addition to preventing evaporation, shade balls also play a crucial role in inhibiting sunlight-induced chemical reactions. The carbon black additive in the HDPE plastic prevents the formation of bromate, a suspected human carcinogen. Bromate forms when sunlight interacts with naturally occurring bromine and the chlorine added to reservoirs to prevent algae growth. By blocking sunlight and preventing the chemical reaction, shade balls help maintain the safety of drinking water sources.
Shade balls were originally known as bird balls, highlighting their effectiveness in deterring birds from landing on bodies of water. This application has been especially useful near airports, where preventing bird collisions with planes is a critical safety concern. By covering drainage ponds with shade balls, airports can reduce the risk of bird strikes and enhance aircraft safety.
While shade balls offer environmental benefits, there is also debate regarding their cost-effectiveness and the amount of water required in their manufacturing process. Some critics argue that the cost of producing shade balls outweighs the monetary savings achieved through water conservation. Additionally, the water needed to manufacture the shade balls may be greater than the amount of water saved by preventing evaporation. Therefore, it is essential to consider the entire life cycle of this technology and its potential impact on water conservation before implementing it.
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They were used in the LA Reservoir to save water during California's historic drought
Plastic water balls, also known as "shade balls", are small plastic spheres that float on the surface of a reservoir. They are partially filled with water to prevent them from being blown away by the wind. In 2015, 96 million plastic shade balls were released into the LA Reservoir to improve water quality and save water during California's historic drought.
The shade balls were expected to reduce evaporation from the reservoir's surface, inhibiting the growth of algae, bacteria, and other harmful chemicals. By blocking sunlight and UV rays, the shade balls could prevent the formation of bromate, a suspected human carcinogen that forms when sunlight interacts with treated water and naturally occurring bromine. This would help to keep the city's drinking water safe.
The use of shade balls in the LA Reservoir was part of a $34.5 million initiative to protect the water supply and save up to 300 million gallons of water annually, enough to provide drinking water for 8,100 people. However, there are concerns about the amount of water used in the manufacturing process of the shade balls, which are made of high-density polyethylene (HDPE) plastic. MIT scientists reported that the production of the 96 million shade balls may have used more water than they ultimately saved.
The debate surrounding the use of shade balls in the LA Reservoir highlights the complexities of environmental conservation. While the technology may offer local benefits, it is important to consider the global impact, including the potential consumption of water in other parts of the world. Additionally, the deployment of shade balls must be strategically timed to periods of water abundance to ensure a positive net effect on water conservation.
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Edible water balls are an alternative to plastic water bottles, made with biodegradable materials
Plastic water balls, also known as "shade balls", are small plastic spheres that float on top of reservoirs to protect water quality and save water. They are made of high-density polyethylene (HDPE) and are partially filled with water to prevent them from being blown away by the wind. While these plastic water balls have been used to address water conservation issues, they have also raised concerns about the amount of water used in their manufacturing process.
As an alternative to plastic water bottles, edible water balls made from biodegradable materials offer a unique approach to hydration. These innovative orbs are designed to be consumed entirely, including the water they contain. One such example is Ooho, a product that has gained recognition worldwide for its edible water pods and biodegradable packaging. Ooho utilizes a natural coating barrier that serves as an alternative to plastic, aligning with their vision of creating "truly natural biomaterials" that positively impact the planet.
Skipping Rock Labs, the creators of Ooho, emphasize their commitment to using only natural materials without any chemical modifications. Their collaboration with Just Eat and SHIFT further showcases their ability to provide plastic-free solutions for takeaway boxes and vending machines. The edible water balls by Skipping Rock Labs are aimed at events where convenient hydration is crucial, such as marathons or outdoor festivals. The water-filled spheres offer a hassle-free way for participants to stay hydrated without generating plastic waste.
However, there are valid concerns about the distribution and packaging of edible water balls. The absence of a sealed lid, similar to traditional water bottles, raises questions about hygiene and potential contamination during handling. Additionally, the outer packaging required for distribution needs further consideration to ensure the water balls remain intact during transportation. While the company behind edible water balls suggests a pliable outer packaging, the specifics of its composition remain unclear, potentially impacting their goal of creating waste-free alternatives.
In conclusion, edible water balls made from biodegradable materials present an innovative approach to reducing plastic waste associated with water consumption. While they offer a unique and environmentally friendly alternative to plastic water bottles, challenges related to distribution, packaging, and hygiene need to be addressed to make them a viable option for consumers.
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Frequently asked questions
A plastic water ball is a small plastic sphere, also known as a shade ball, bird ball, or water shade ball.
Plastic water balls are floated on top of a reservoir for environmental reasons, including to slow evaporation, prevent algae growth, and stop birds from landing on bodies of water.
Plastic water balls are typically about 4 inches (10 cm) in diameter and are partially filled with water to avoid being blown by the wind.
Plastic water balls are made of high-density polyethylene (HDPE) with carbon black additive to protect the plastic from ultraviolet radiation and prevent the formation of bromate, a suspected human carcinogen.
