Rembang, August 14, 2025 – The Department of Physics, Diponegoro University (UNDIP), once again carried out a Community Service Program (PKM) themed “Introduction to a Portable Mini Wastewater Treatment Plant (WWTP) for Batik Wastewater Processing.” The event took place at Batik Lasem Ningrat, Rembang, and was attended by UNDIP Physics lecturers including Prof. Heri Sutanto, S.Si., M.Si., F.Med., Prof. Dr. Eng. Eko Hidayanto, S.Si., M.Si., F.Med., and Drs. Indras Marhaendrajaya, M.Si., along with several students. The activity was warmly welcomed by Mr. Rifa’i, representing Batik Lasem Ningrat.
The program began with an introduction from the UNDIP team about Diponegoro University’s profile, particularly the Department of Physics, and its strong commitment to continuously bringing innovations that benefit society. This opening session was designed to build good relations and to demonstrate how science—especially physics—can make a tangible contribution to solving environmental problems.
The core of the event focused on the presentation of the portable Mini-WWTP technology, designed as a practical solution to help batik industries manage their liquid waste. Participants received explanations about the system’s working principles, its environmental benefits in reducing pollution, and its potential application for small and medium enterprises (SMEs) such as Batik Lasem.
Following the presentation, the activity continued with a field visit around the Batik Lasem Ningrat production area. The UNDIP team and participants observed the batik-making process firsthand, from fabric dyeing to washing. Special attention was given to the wastewater discharge area, where untreated liquid waste from production could potentially pollute the surrounding environment if not properly managed.
The event concluded with an open discussion on the potential implementation of the portable Mini-WWTP at Batik Lasem Ningrat and possible follow-up collaborations between UNDIP and local batik artisans to create more environmentally friendly wastewater management solutions.
According to the UNDIP team, this activity aims to raise awareness among batik artisans about the importance of waste management and to pave the way for adopting simple yet effective technologies to preserve the environment.
“Through this program, we aim to provide real solutions so that the batik industry can thrive sustainably while remaining environmentally friendly,” said one of the UNDIP Physics lecturers.
