Water reuse

Created to recycle water from a wastewater treatment plant

What is water reuse (REUSE)?

The answer is already there! The reuse of treated wastewater (REUT) involves recycling water that has already been used for reuse. It’s like implementing a circular water economy system, which represents an effective alternative for water needs. Doesn’t that make sense?

LREUSE is a common way to deal with global water challenges, such as scarcity due to increasing droughts. With this technology, managing water needs becomes much easier, as existing facilities, such as clarifiers, can be used to provide quality water. It is an alternative solution for the preservation of water, which has become an increasingly rare and precious resource.

Among other benefits, the REUSE allows to:

  • maintain and reuse water resources
  • greatly reduce freshwater needs
  • reduce processing and distribution costs.

What does it consist of?

REUSE implementation may take several forms, including: .

  • wastewater collection and treatment for agricultural irrigation,
  • groundwater refill,
  • Filling up hydro-cleaning trucks and road cleaning machines
  • rainwater use for domestic purposes.

Such a practice can also reduce the environmental impacts associated with wastewater discharges. Indeed, any nitrate output from the wastewater treatment plant that is reused for irrigation, for example, is a nitrate that doesn’t end up in the river and won’t be purchased by the farmer.

Why reuse wastewater?

Given recent events, no one has missed it, right? Are you interested in climate change? There are increasingly frequent droughts leading to a water shortage.

And yet, we continue to discharge treated wastewater from treatment plants into the environment without even reclaiming it. Why not turn wastewater into a precious resource to address water deficits?

But by what process can we recycle wastewater to make it usable again? This is where the reuse of treated wastewater (REUT) comes into play.

Managing water sustainably is one of the main concerns for the world, and the current scarcity of water resources has become a serious reality. So it’s time to change the way we do things and reuse wastewater to supply domestic water needs. Wastewater reuse can help to:

  • reduce demands on freshwater supplies by offering an alternative source of water.
  • Reducing pollution in rivers, lakes, and oceans by minimizing the amounts of wastewater discharged into the environment.

The different types of recyclable wastewater.

Most wastewater comes from various urban or industrial sources, each requiring different treatment before reuse. Among these waters, we have:

  • Greywater : these are wastewater discharged from households, originating from showers, sinks, and washing machines. This water is less contaminated than other types of wastewater. They can be treated and reused for irrigation or car washing.

  • Blackwater: This water comes from toilets and often contains fecal matter and urine. Although they require more complex treatment, once treated, they can be recycled for non-potable use.

  • Industrial water: Produced by factories and industries, often contains chemical contaminants. Their treatment requires specialized technologies. Once treated, they can also be reused for various applications, contributing to the conservation of water resources.

Anything that is reused is something you don't have to consume. It's easy, compact, low-tech

What are the benefits of water reuse (REUSE)?

Anything that is reused is something you don’t have to consume. Furthermore, reusing water allows to save system efficiency, i.e. 1.2 to 1.5 times the reused volume.

And you know what? All of this volume will be saved and will remain in the river for fish and other aquatic organisms. But wastewater reuse does not only provide benefits for the environment and sustainable water management. It also helps to:

  • meet food security challenges, by allowing agricultural irrigation;
  • Addressing political and socio-economic constraints by enabling substantial savings in drinking water.
  • reduce freshwater needs, while providing a stable source for non-potable uses. Among these are green space watering, public road cleaning or groundwater refill.

Presentation of the product "Water REUSE Skid" and its advantages

Water REUSE Skid is the perfect water reuse system for companies or communities. It is easy, compact, low-tech and the skid fits in small spaces.

It works by filtrating water through an advanced filtration system that removes impurities and contaminants. This filtered water can then be reused in production processes or for agricultural irrigation.

By reusing water, many companies can save a lot of money. These include water supply costs, carbon footprint reduction and water resource preservation.

How to set up a water reuse project (REUSE)?

Water reuse projects are growing in popularity as a result of the economic and environmental benefits they offer. To establish this kind of project, you need to determine the final objective. Depending on these factors, our teams will determine the most appropriate equipment.

  1. First step, you have to know where you want to go: which application you want to use? Which standard should be respected? Which resource is available?
  2. The second step is to assess available water sources: treated wastewater, rainwater or borehole water, surface water… You must determine the desired flow rate here
  3. Once the water sources identified, it is important to determine the water quality and treatment requirements for the intended application: transmittance analysis, TSS, COD, Iron
  4. The fourth step is to choose the right equipment for the water quality. A variety of equipment exists. We have prepared a free online design form available below.
  5. A distribution system must then be developed to suit the use and the treatment equipment. You will get a new industrial water network that can supply many equipments.
  6. Finally, regular maintenance of the water reuse system is important to ensure savings and resource conservation. In most cases, annual cleaning of lamps is enough.

What are the different types of water reuse?

Wherever water is needed, water reuse (REUSE) is a valuable solution to meet water needs. There are different types of water reuse depending on the application and quality requirements.

Urban recycling

In urban areas, the recycling of wastewater contributes to the sustainable management of water resources by minimising dependence on drinking water for non-potable uses.

  • Toilets and urinals: Use of treated wastewater to reduce drinking water consumption.
  • Fire-fighting systems: Use of non-potable water for fire safety.
  • Watering green spaces, parks, stadiums and golf courses: maintaining green urban areas with treated water.
  • Fountains, waterfalls and decorative water tanks: Supplying decorative water installations in urban environments.
  • Rainwater harvesting systems: Collection and use of rainwater for various urban purposes.
  • Recharging groundwater or water bodies: Increasing groundwater reserves for sustainable water management in urban areas.

The reuse of wastewater for agricultural irrigation.

In the current context of water crisis and climate change, the reuse of treated wastewater for agricultural irrigation emerges as a viable and environmentally friendly solution. Agricultural irrigation is one of the biggest consumers of water in the world. Its use offers a number of advantages, including

  • Support for sustainability: It contributes to sustainable water management by reusing an otherwise wasted resource.
  • Reduced use of fertilisers: The nutrients present in wastewater can reduce the need for synthetic fertilisers, thereby reducing the environmental impact of agriculture.
  • Improved soil fertility: Regular irrigation with wastewater can improve soil structure and fertility, increasing the productivity of farmland.

Industrial recycling

The industrial recycling of treated wastewater is a necessary practice for optimising the management of water resources in industrial sectors. It enables a wide range of needs to be met while reducing pressure on freshwater sources and minimising the environmental impact of industrial activities.

  • Industrial processes to optimise the use of water resources.
  • Car washes
  • Cooling systems for more efficient water management.

Reusing water for car washing: a very innovative idea.

The environmental challenges we face today are numerous. Among these challenges, responsible water management has become necessary.

One of the many applications of WASTE is car washing, which has the potential to significantly reduce water consumption.

It allows, among other things:

  • reduce the environmental impact of car washing
  • recycling grey water from urban applications

However, the implementation of wastewater reuse for car washing requires a number of technical considerations. A water filtration and purification system must be installed to ensure that wastewater is properly treated before being reused. This may represent a significant initial investment, but the long-term savings in terms of water consumption can offset this cost.

All of these applications require different water quality and treatment requirements, as well as advantages and disadvantages.

However, the reuse of water for agricultural irrigation and green spaces is one of the most relevant due to the presence of nitrogen and phosphorus in the water discharged from wastewater treatment plants (STEP).

What are the standards and regulations regarding water reuse?

Wastewater reuse is a practice that is rapidly gaining popularity worldwide, especially in the agricultural sector. However, standards and regulations will change from country to country, and even from region to region. Actually, it depends on the country.

In France, the recycling of treated wastewater (REUT) is governed by two ministerial decrees from 2010 and 2014. These regulations define four categories of water (A, B, C, D) with health quality criteria and associated authorised and prohibited uses.

According to Ecologie-Gouv, two new decrees were also published on 21 and 28 December, in application of the decree of 29 August 2023 on the uses and conditions of use of rainwater and treated wastewater. These decrees detail the specific conditions for irrigating crops and green spaces. Their aim is to simplify procedures while guaranteeing a rigorous compliance and quality framework to protect public health and natural ecosystems.

Some countries, especially in Africa, are taking a very pragmatic approach to REUSE and have implemented simple and inexpensive solutions to reuse water. In Australia, reuse is regulated under strict standards to ensure the quality of the reused water, which severely limits the type of resource that can be reused. Once again, it all depends on the intended end use. If you want to make drinking water from wastewater, then you must meet the criteria of the that ensures high water quality for the end users.

What are the water treatment techniques for reuse?

Different water treatment techniques are available for reuse, adapted to different types of applications.

When it comes to recycling wastewater, it’s best to opt for on-need treatment. It allows to produce water of quality adapted to each use without worrying about storage.

UV filtration and disinfection are ideal for reusing water after treatment. Storage of treated water requires chlorination to prevent bacterial growth. However, spraying fields with chlorinated water is not an option, is it? Other water treatment techniques such as microfiltration, reverse osmosis and nanofiltration can also be used to remove impurities and contaminants. They are effective, but expensive, both to buy and to run.

Choosing the right water treatment technology depends on the specific needs of each application. UV filtration and disinfection is the best quality/price solution. 1h2o3’s compact equipment will allow you to treat your water upstream of the water REUSE skid efficiently, for example with a drum filter or a lamella clarifier.

Is the reused water (REUSE) potable?

Reused water is often untreated to meet drinking water standards. Whether reused water is safe to drink remains a concern for many users. It depends again on the original purpose, the quality of the water and the treatment it has undergone. It is possible to treat the reused water to make it potable using advanced water treatment technologies such as ozonation and nanofiltration. But these technologies are expensive, and all equipment must be certified, further increasing their prices.

However, the large cost of this treatment raises questions about its relevance. Is the cost and complexity of water purification worth it? Indeed, the water reused at the end of the treatment plant still contains nitrates and phosphorus. Doesn’t it make more sense to use this nutrient-rich water source for agriculture than to make it potable at a high price? Everything can be done with technology, even drinking water from wastewater. Honestly, though, at what cost?

How does the 1h2o3 Water REUSE skid work?

1h2o3 skid is an innovative system for reusing recycled water. It is working in a simple and efficient way. The goal is to filter and purify wastewater to make it reusable.

  • When opening the tap, water comes out under pressure.
  • Drop in pressure triggers pumping.
  • Pumped water is filtered and disinfected
  • A control valve allows the flow rate to be adjusted. Recommended operating flow rate will depend on the transmittance of the water source.
  • Once the filter is clogged, a solenoid discharge valve opens to discharge the particles.

We chose not to make drinking water. Indeed, 99% of REUSE applications require non-potable water. We just need it to be clean enough to reach the desired quality grades. The 1h2o3 skid is therefore an ideal solution for reusing water in many applications such as agricultural irrigation, industrial cleaning, and even production.. It’s also intended to be easily integrated into existing systems. It can be used to treat wastewater generated by homes, public buildings or even factories. The system is cost-effective, significantly reducing drinking water costs while reducing wastewater disposal costs. Compact, it is designed to be combined with other 1h2o3 modular equipment to meet different water treatment needs. To get an estimate for your project, we invite you to fill out the sizing form on the skid’s page!

Presentation of the Water REUSE Skid and its function

Water REUSE skid reduces drinking water consumption for communities and businesses. With this system, you can create another non-drinking water network, which in our jargon is called an industrial water network.

It uses advanced technologies to purify industrial water, saving businesses both money and reducing their environmental impact. Treatment process includes pumping, filtration, disinfection and flow control. The skid is available in different sizes. Every company has a model that is adapted to its needs. In addition, the use of non-potable water helps to conserve freshwater resources by avoiding the need to tap into supplies.

Technologies used to recycle water

Reusing treated water is growing more and more popular to preserve our planet’s fresh water resources. However, concerns about recycled water quality can make people skeptical about using this method. That’s where the Water REUSE skid comes in, with its high processing performance and reasonable cost. REUSE skid is very simple. A single suction pump is able to draw in the water to be treated and load the skid. Automatic filtration ensures that impurities are removed from the treated water, resulting in clean, high quality water. Disinfection is completed by an automatic cleaning device. Manual regulation allows the flow rate to be adjusted to the user’s needs.

REUSE Skid's performance in terms of recycled water quality

Thanks to its process, the 1h2o3 REUT skid can produce Class A quality water, close to that of drinking water. It all depends on your transmittance in fact, therefore on the treatment performance of your wastewater treatment plant.

Transmittance measures the amount of light. through a water sample. The more transmitter, the clearer and cleaner the water. ReuSE skid is very sensitive to the transmittance of the treated water. The clearer the water, the more water can be reused.

REUSE Skid’s performance is also related to the embedded fine filtration technology (20 microns). This allows us to achieve quality classes from A to D, at specific flow rates for each device depending on the quality of the resource.

Water reuse skid benefits

There are so many benefits to reusing water that it begs the question: why isn’t this technology more widely used?

With water reuse skid, you can save thousands and thousands of liters of water every day. Here are some benefits of 1h2o3’s Water REUSE skids:

  • Compactness: easy to install on new or existing projects.
  • Easy handling: with open structure for transpallet
  • High quality level: can reach quality A depending on the resource
  • High flow rate: up to 45 m3/h, the flow rate being adjusted to the transmittance
  • Simplicity: no calibration of sensors, the skid works autonomously once primed.
  • High quality and recyclable materials: unlike fiberglass, all materials used in our equipment are 100% recyclable.

Commençons dès aujourd’hui !

Qu’il s’agisse de la réutilisation des eaux usées industrielles ou d’un système complet sur mesure, nos ingénieurs peuvent vous aider à sélectionner la parfaite combinaison d’équipements pour vos besoins.

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