Liputan6.com, Surabaya - The Abdi Karya Team from the Sepuluh Nopember Institute of Technology (ITS) designed a wastewater treatment plant (IPAL) for reuse, recycle, and recovery (3R) based laundry.The head of the Abdi Karya team, Cindy Synthia Putri, said that many laundry businesses currently do not have WWTPs.The laundry water waste that they produce tends to be thrown away without being processed first.In fact, this waste contains a variety of hazardous substances."This content comes from a mixture of detergent and dirt on the clothes," said Cindy, as written on Wednesday (7/10/2020).According to Cindy, the hazardous contents of the waste include Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), and phosphate.Cindy explained, high BOD and COD values ​​can cause a deficit of oxygen dissolved in water.Meanwhile, TSS is able to muddy the water and block sunlight from entering."Meanwhile, phosphate can degrade the life of aquatic biota and increase nutrients," said this student from the Department of Environmental Engineering.Therefore, continued Cindy, USK laundry requires a processing unit that can reduce the risk of environmental pollution.The WWTP design designed by Cindy and the team is portable.In addition, this WWTP has a size that is in accordance with the availability of a small-scale laundry room."So it won't take up much space," continued this 2016 student.Cindy explained that the waste from this tool will be collected first in the collection tank.Furthermore, the waste will be filtered using river sand through a biosand filter process.Then, the treated water will go through two activated carbon adsorption processes using coconut shell adsorbents."Finally, this processed waste will be clean and can be collected into water reservoirs," he said.ITS Airlangga Medical Assistant Robot, or what is now known as Raisa, is ready to operate to treat Covid-19 patients.Raisa robot is capable of 2-way communication so that it can interact like humans.According to Cindy, their design WWTP is getting better thanks to the application of 3R.The principle of recycling is seen in the treated water which can be reused for watering hydroponic plants, washing vehicles, and can be re-flowed to the processing unit again.In addition, river sand that starts to get dirty due to the filter process can be reused after washing with clean water."Meanwhile, the saturated adsorbent produced can be used (recovery) as fertilizer," he said.Besides Cindy, other members of the ITS Abdi Karya team are Nabila Putri R, Nandalita Alifia, and Oktsyavitto Adhitya from the Department of Environmental Engineering.Besides them, there are also Vaneti Kyash L and Wahid Ramadhan S from the Department of Architecture. Then there is Ifarrel Rachmanda H, a student of the Department of Civil Engineering."The seven of us succeeded in collaborating ideas into real designs," he said.Sweet fruit, their hard work has brought achievements.The IPAL designed by the ITS Abdi Karya team has won the main winner of the USK Laundry and Batik categories in the 2020 IPAL Innovation Design competition, on September 18, 2020.In this competition held by the Ministry of Environment and Forestry (KLHK), Abdi Karya managed to outperform 68 other teams from national and foreign universities.In the future, the guidance team of Arseto Yekti Bagastyo ST MT MPhil, Welly Herumurti ST MSc, and Ervin Nurhayati ST MT PhD hopes that their designs will not only be completed in the competition.Cindy hopes that the innovations they have initiated can be further developed so that they are more mature for use by laundry business activists."I hope that the impact of this waste pollution can be overcome with our WWTPs," he concluded.