Grey water, according to its quantity and characteristics, is potential to be source of raw water. To address this, a common approriate method has been implemented in Indonesia, is constructed wetlands system. This is due to vegetation diversity, simple construction, flexible, easy and low cost in operation and maintenance, as well as high estetics. This research is focused on observing the effects of detention time and system of constructed wetlands reactors using Echinodorus palaefolius vegetation to reduce biological oxygen demand (BOD) and Total suspended solid (TSS). The detention time varied by 3 days, 4 days, 5 days, 6 days and 7 days. The system of constructed wetlands reactors varied by blank reactor , as a control without vegetation (CW 1); reactor with few flowers (CW 2); reactor with vegetation having leaves less than (<)20 (CW 3) and reactor with vegetation having leaves more than (>)20 (CW 4). The results showed that the detention time and the system of constructed wetlands reactors influences in reducing BOD and TSS. Concentration of BOD and TSS efluen decreases as the detention time increase. Besides, these concentrations decrease, as the amount of leaves increase. The concentration of BOD and TSS ranges (1,6 – 3,22) mg/L) and (0,003 – 0,147) mg/L.Keywords :    Constructed wetlands; Echinodorus palaefolius; Grey water; BOD, TSS

The palm oil processing industry in which produces Crude Palm Oil (CPO) generally uses boilers. The combustion process with a boiler will produce pollutants in the form of particulates (dust), and gases such as NO2 and SO2. There are two palm oil processing industries in Muaro Jambi District that use different fuels: coal and oil palm shell. The purpose of this study was to determine the ratio of SO2, NO2 and particulate concentration in industries that use coal and oil palm shell.  Primary data taken in the form of concentrations of SO2, NO2 and particulates also meteorological data. Secondary data taken in the form of map area, height and diameter of the boiler, and production capacity. Sampling time is in the morning, afternoon and evening which is repeated in 3 times. The results showed that the comparison of NO2 and SO2 concentrations produced from coal-fired boilers was higher than shell-fired boilers, but both were still below the quality standard. Particulate concentrations in the palm oil processing industry that use coal-fired boilers are above the quality standard, while shell-fired boilers still meet quality standards.

Leachate atau lindi sampah berpotensi untuk mencemari air pemukaan dan air tanah. Hal ini diakibatkan degradasi biologis leachate menghasilkan pencemar berbahaya seperti zat organik dan logam berat. Penelitian ini bertujuan untuk mengamati efisiensi MSL dalam mereduksi pencemar yang terkandung dalam leachate. Pengamatan penelitian difokuskan pada pengaruh hydraulic loading rate (HLR) terhadap efisiensi reduksi pencemar, yang terdiri atas 250 l/m2.hari, 500 l/m2.hari dan 1000 l/m2.hari. Penelitian ini dilakukan dengan cara mengalirkan secara gravitasi leachate Tempat Pemprosesan Akhir (TPA) Talang Gulo ke reaktor MSL berdimensi 15x50x50 cm. Reaktor MSL terdiri atas lapisan impermeable dan lapisan permeabel. Lapisan impermeabel merupakan lapisan yang terdiri atas campuran tanah dan arang dengan rasio 2 : 1, serta lapisan permeabel terdiri atas lapisan zeolit berdiameter 0,25 – 0,5 cm. Berdasarkan hasil penelitian, didapat bahwa MSL dapat menetralkan pH dan mereduksi konsentrasi pencemar COD, amoniak, besi (Fe) dan warna. Efisiensi reduksi untuk semua pencemar berkisar 92% – 99,966%. Secara umum, HLR sangat mempengaruhi efisiensi reduksi, dimana makin rendah HLR maka makin rendah konsentrasi outlet serta makin tinggi efisiensi reduksi.

Ttransportation is one of the factors that have a major influence in air quality decline. Air pollution is not only happening outside the room and will mobilization activities of motor vehicles, but it can affect air quality in space. One of the pollutant gas produced from vehicles is the concentration of Nitrogen Dioxide (NO2). This allows an exposure that will impact on public health. The purpose of this study is to determine the relationship of NO2 air ambient concentration (outdoor) to indoor air (indoor) in Simpang Jelutung Red Lights area. The method used in this study is quantitatif method. Data collection using sampling NO2 concentration in outdoor and indoor. The relationship between outdoor and indoor NO2 concentrations was analyzed using Pearson correlation. This is in line with the small influence of air NO2 concentration in space on public health. Result shows that all of the sample is still categorized either or not passing the air quality standard (150 μg / m3) in Government Regulation Number 41 Year 1999. The correlation analysis result  show relationship NO2 concentration between ambient air (outdoor) to indoor air was 13%, which means that correlation relationship is very weak.  Keywords:     Ambient air, indoor air, NO2 concentration

ABSTRAKLimbah oli bekas dikategorikan sebagai limbah B3 dalam PP 101 tahun 2014 yang berpotensi membahayakan makhluk hidup dan lingkungan. Solidifikasi/stabilisasi merupakan salah satu cara untuk mengatasi permasalahan limbah B3. Upaya ini dilakukan dengan proses solidifikasi/stabilisasi (s/s) limbah oli bekas dengan campuran semen dan pasir silika menjadi bentuk mortar berukuran (5x5x5) cm. Penelitian bertujuan untuk mengidentifikasi pengaruh rasio oli bekas terhadap air (o/a) dan umur mortar terhadap efektivitas proses s/s tersebut melalui uji kualitas mortar secara fisik dan kimia. Uji tersebut meliputi uji kuat tekan dan uji perlindian (toxicity characteristic leaching procedure). Hasil penelitian menunjukkan bahwa nilai kuat tekan untuk rasio o/a 0%:100%, 15%:85% dan 25%:75% pada umur mortar 7 hari, 14 hari dan 28 hari memenuhi nilai kuat tekan yang ditetapkan oleh SNI-15-7064 2004 dan ASTM C150-02. Uji perlindian sampel mortar untuk rasio o/a 0%:100%, 15%:85% dan 25%:75% pada umur mortar 7 hari, 14 hari, dan 28 hari menunjukkan bahwa konsentrasi Pb adalah berkisar 0,517x10 -6 -0,612x10 -6 mg/L, dan konsentrasi Fe berkisar 0,174x10 -6 -0,780x10 -6 mg/L. Konsentrasi Pb kurang dari konsentrasi baku mutu atau dapat dikatakan lolos uji TCLP lampiran PP 101 tahun 2014. Kata kunci: limbah oli bekas, solidifikasi/stabilisasi, rasio o/a, kuat tekan, TCLP ABSTRACTLubricant waste is categorized as hazardous waste stated in government regulation (PP) 101/ 2014. It could dangers human being and environment. This problem can be addressed by solidification/stabilization process. In this work, lubricant waste was solidified/stabilized in a mixture of lubricant waste with cement as binder and silica sand into mortar sized of (5x5x5) cm. This study was aimed to investigate the influences of ratio of lubricant waste to water (ratio o/a) and curing time or age of mortar to the effectiveness of s/s process by testing mortar quality physically and chemically. The test includes compressive strenght test and leaching test (toxicity characteristic leaching procedure). The results showed compressive strenght value for mortar with the The concentrations of Pb were less than the concentration of quality standard and pass the TCLP test defined by attachment of government regulation (PP) 101/2014.