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All Journal PENELITIAN DAN KARYA ILMIAH Journal of Environmental Engineering & Waste Management Jurnal Serambi Engineering ACADEMICS IN ACTION Journal of Community Empowerment JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Jurnal Penelitian dan Karya Ilmiah Lembaga Penelitian Universitas Trisakti INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY

Rijal Hakiki

President University

Author-ID : 3002153

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WASTEWATER SLUDGE AS AN ALTERNATIVE ENERGY RESOURCE: A REVIEW Tetuko Kurniawan; Rijal Hakiki; Filson Maratur Sidjabat
Journal of Environmental Engineering and Waste Management Vol 3, No 1 (2018)
Publisher : President University

In recent years, concerns regarding to wastewater sludge disposal have increased globally. Production of sludge has increased recently due to the growth of population. Wastewater sludge classified as a hazardous substance, it is not easy to dispose because of certain treatment is required. Typically, sludge is treated at secured landfill which its limited in availability and expensive. On the other hand, wastewater sludge originated from biological treatment contains organic substance that can be converted into alternative energy resources. A technology is needed that is able to reduce the volume of sludge and convert sludge into energy source. We present an overview of various technologies that can be used for conversion of sludge into energy resources. Those technologies are anaerobic digestion, pelletization, combustion, pyrolysis and gasification. Progress and challenges of each technology is presented in detail. A summary of sludge characteristic originated from different source will be discussed as well. Emissions and residues that determines the environmental impact is also considered. Referring to some previous research, it known that wastewater sludge, as unwanted product, has the potential to become future energy resource. This potential can only be used properly if the method of conversion are effective and efficient.

AIR QUALITY MONITORING IN INDUSTRIAL ESTATE (Case Study: Jababeka Industrial Estate, Cikarang) Filson Maratur Sidjabat; Rijal Hakiki; Temmy Wikaningrum
Journal of Environmental Engineering and Waste Management Vol 4, No 2 (2019)
Publisher : President University

Ambient Air Quality Monitoring (AAQM) must be conducted by Industrial Estate Management, according to legislation and regulation in EIA (Environmental Impact Assessment) Report. AAQ test parameter are Sulfur Dioxide (SO2), Carbon Monoxide (CO), Nitrogen Dioxide (NO2), Ozon (O3), Hidrocarbon (HC), PM10, PM2,5, Total Suspended Solid (TSP), and Lead (Pb). Industrial Estate Management has an extensive role in AAQM, analysing and organizing better environmental policies. The data of Jababeka Industrial Estate (JIE) AAQM was seized from EIA Report each semester from year 2015 to 2018 and analyzed using openair model. A review of AAQM and Management in other industrial estate was done as a lesson-learned and insight to improve the AAQM System in JIE. Openair model can analyze the AAQ data with meteorological data around the sampling point area, and visualize it through the pollution rose function. The limited data of AAQM and weather, will limitate the result and analysis. The future research must aims to make a real-time/continuous AAQM and meteorological data to get more accurate and comprehensive data modeling and analysis.

Key performance indicators (KPIs) comparison of food chain reactor and conventional oxidation ditch technology in industrial waste treatment Temmy Wikaningrum; Rijal Hakiki
Journal of Environmental Engineering and Waste Management Vol 5, No 1 (2020)
Publisher : President University

The oxidation process as the activated sludge (AS) system has been implemented widely in urban and industrial wastewater treatment. Oxidation ditch can be categorized as an advanced aeration activated sludge. Integrated Fix-Film Activated Sludge (IFAS) process has been already developed for decades that was a reasonable approach for technology to upgrade the activated sludge wastewater treatment plant (WWTP). IFAS processes are a combination of biofilm reactors and activated sludge processes, biofilm is introducing and retaining as the carrier media for microorganism growth. Both IFAS and AS processes can achieve similar percent removal of COD and ammonia. Current WWTP’s development was food chain reactor (FCR) which mainly IFAS process of engineered media that combining with natural plants with the plant roots submerging into the reactors. The references review and secondary data of the application in Jababeka’s WWTP-2 for both AS and FCR system showed that FCR is needless parameters to be controlled. In both AS and FCR have KPIs of flow rate (m3/day), F/M ratio, energy consumption (kWh/m3 wastewater), Oxygen supply (kgO2 / m3 wastewater in each reactor, % removal of COD, BOD, TSS, NH3, TKN, NO2, and heavy metals, and pH, Dissolved Oxygen, microorganism performance in the reactor. Different from AS, the FCR system is not required to control the parameters of sludge retention time (SRT), recirculated activated sludge (RAS), sludge volume index (SVI), and mixed liquor suspended solids (MLSS)of activated sludge.

Reduksi Tingkat Kekeruhan dan Total Partikel Tersuspensi Melalui Proses Sentrifugasi Pada Air Limbah Wudu Rijal Hakiki; Dwi Anggi Agustin
Journal of Environmental Engineering and Waste Management Vol 8, No 1 (2023)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jenv.v8i1.3886

Abstrak. Air limbah dihasilkan dari aktivitas manusia, baik industri maupun domestik. Air limbah domestik berasal dari kegiatan rumah tangga seperti mandi, mencuci, jamban, dan wudhu. Indonesia sebagai negara dengan mayoritas penduduk muslim menghasilkan air limbah wudhu yang dihasilkan setidaknya dari lima kali ibadah solat wajib. Secara umum, air limbah dapat diolah dengan berbagai teknologi, salah satunya adalah teknologi sentrifugasi. Teknologi sentrifugasi adalah salah satu teknologi proses untuk memisahkan partikel tersuspensi dari air limbah. Tujuan: Penelitian ini berfokus pada penggunaan teknologi sentrifugasi untuk mengolah air limbah wudhu yang bertujuan untuk mengetahui kemampuan teknologi sentrifugasi dalam pengolahan air limbah wudhu dalam hal efisiensi penyisihan dan penetuan kondisi proses optimum sehingga dapat menghasilkan efluen sesuai baku mutu air permukaan. Parameter indikator yang diamati sebagai acuan untuk mengamati perubahan kondisi efluen hasil pengolahan adalah tingkat kekeruhan (turbidity) dan konsentrasi total padatan terlarut (TSS). Metode dan Hasil: Penelitian ini merupakan penelitian skala laboratorium yang menggunakan unit sentrifugasi sebagai instrumentasi utama. Air limbah wudhu akan diolah pada berbagai variasi kombinasi perlakuan antara lain variasi kecepatan rotasi 500, 1500, 3000, 4500, dan 6000 rpm dan variasi durasi sentrifugasi 1, 3, 5, 8, dan 10 menit dengan penambahan kaolin pada dosis 25, 50, dan 75%. Kesimpulan: Hasil pecobaan menunjukan bahwa rentang penyisihan kekeruhan berada pada nilai 16,1-99,4% dan 0,9-92% untuk penyisihan parameter TSS. Kondisi optimum proses penyisihan dapat dicapai pada kombinasi perlakuan durasi 1 menit, kecepatan sentrifugasi 6000 rpm dan dosis kaolin 75%.

Co-Authors Ani Pujiastuti Astuti, Maryani Paramita Dwi Anggi Agustin Emilius German Filson Maratur Sidjabat Maryani Paramita Astuti Maryani Paramita Astuti Risa Fitria Temmy Wikaningrum Tetuko Kurniawan Yunita Ismail, Yunita

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Journal : Journal of Environmental Engineering