What is grey water?
Grey water is the wastewater produced by the domestic activities. It differs from other types of domestic wastewater in a way that, it does not contain fecal matter from toilets. Even though, grey water contains fewer solids and pathogens, it is easier to treat.
Furthermore, because there are few contaminants to treat, grey water is an excellent source of reusable water, requiring less energy to treat and reuse. It can be reused for irrigation, laundry, toilet water, or cleaning. Essentially, it can be used for all non-potable water applications.
In this blog, we will discuss about some of the benefits of re-use of hotel grey water through electrocoagulation.
Do hotels produce grey water?
In India, our family takes a week-long vacation whenever possible, staying in an oceanfront hotel and spending all day, every day out in the sun. They are covered in salt and sunscreen from head to toe by the time they arrive for dinner, and are in desperate need of a shower.
Showering is an occasion. It takes about two hours to clean. Two hours of continuous running water is a long time. However, we must also brush our teeth, wash our hands, prepare dinner, wash dishes, and do laundry. The amount of grey water produced is significant. Hotels and resorts can house hundreds of families, all of whom use water for the same reasons.
However, there is also housekeeping to think about. After one family vacates a room, they clean and wash the bed sheets. In total, thousands of gallons of water are consumed during a single day of operation in a hotel. All of this water is grey water.
What are the benefits of Electrocoagulation for Hotel Grey Water?
Electrocoagulation (EC), as part of a grey water treatment system, is one option for treating grey water for re-use. Because, EC has been used successfully in many industrial applications, it can undoubtedly be effective for grey water treatment and reuse.
Benefits of electrocoagulation (EC) for Hotel Grey Water Reuse
1) Low Cost, simple maintenance
EC systems can be compact, simple to install, simple to operate, and simple to maintain. There are no moving parts to break or maintain in these systems.Netsol Water Solutions specialized modular units are typically automated, simple to install, and can be used in new process systems or retrofitted into existing ones. In greywater applications, these systems may not require pH adjustment to function properly.
Maintenance consists primarily of cleaning electrodes, which can be automated, and replacing sacrificial electrodes that have worn down. Good maintenance and the use of optimized current can extend their life.
2) Production of sludge
Sludge is a nuisance in most wastewater treatment situations. Using a traditional chemical treatment approach produces a lot of it, which is usually toxic. However, when using EC, especially with greywater, very little sludge is produced, which is non-toxic.
In fact, once dewatered, it can produce excellent fertilizer that can be used on any plants, around the hotel.
3) Power usage
You would think that something that runs on electricity would consume a lot of it, but it can actually use less than other systems. Grey water reuse can require very little current. With optimized power usage, the system can treat more than 50% of the contaminants in five to ten minutes.
4) EC does not take much time to work especially on grey water
Chlorine disinfection can take up to 30 minutes to complete, and this is only for disinfection. EC can remove more than 80% of all contaminants in less time.
Grey water reuse not only reduces hotel operating costs, but it is also a more efficient and sustainable way of using water.
Netsol Water includes EC in its Grey Water Recycling System. EC can be a great method for grey water recycling, due to its elimination efficiencies for COD, BOD, turbidity, and coliforms.