Pemanfaatan Timbunan Sampah Zona Non-aktif Tpa Putri Cempo Surakarta

Garbage is a side product of human activity. For some people trash is worthless. Though the correct utilization of waste can be recycled so it has economic value. Putri Cempo has midden that can be reused. Potential of waste pile in Putri Cempo landfill consist 60,4% of organic waste and 6,7% of anorganic waste. The method used is to make the organic waste into organic fertilizer granules and recycled plastic as raw material for the manufacture of plastics that are ready for sale. Utilization is done by constructing a granule organic fertilizer plant which has a capacity of 15 tons per day and recycled plastic has a capacity of 150 kg per day. Utilization of waste pile facility is able to reduce landfill waste by 4039.2 tons per year. The cost needed to make this composting facility were Rp. 3.311.609.172,0

Penyisihan Karbofuran Dan 2,4 Diklorofenoksisetat Menggunakan Teknologi Membran Nanofiltrasi

Seiring meningkatnya penggunaan pestisida dalam bidang pertanian, maka potensi terjadinya pencemaran pestisida dalam air semakin meningkat. Berbagai teknologi seperti karbon aktif dan oksidasi menggunakan kombinasi H2O2 dan Ozon dirasa belum efektif untuk menyisihkan pestisida dalam air. Membran nanofiltrasi merupakan salah satu teknologi yang dapat digunakan untuk menghilangkan mikropolutan seperti pestisida. Dalam penelitian ini, digunakan karbofuran dan 2,4Diklorofenoksiasetat (2,4D) yang merupakan jenis pestisida yang banyak digunakan di Indonesia dengan konsentrasi awal 25ppm. Tujuan dari penelitian ini adalah mengetahui besarnya rejeksi dan profil fluks dari karbofuran dan 2,4D. Selain itu, untuk mengetahui pengaruh adanya Natural Organik Matter (NOM) terhadap fluks dan rejeksi karbofuran dan 2,4D digunakan polisakarida berupa sodium alginat (SA) dengan konsentrasi 5ppm. Penelitian dilakukan pada tekanan 4, 5 dan 6 bar dengan menggunakan membran NF270. Konsentrasi pestisida dapat diketahui menggunakan spektrofotometer UV-Vis dengan panjang gelombang 276 nm dan 284nm untuk karbofuran dan 2,4D. Hasil yang diperoleh menunjukkan bahwa semakin besar tekanan operasi menyebabkan rejeksi 2,4D semakin rendah dengan fluks yang tidak jauh berbeda pada masing-masing tekanan. Rejeksi karbofuran terbesar pada tekanan 5 bar dan saat tekanan 6 bar rejeksi turun dengan nilai fluks yang tidak jauh berbeda pada ketiga tekanan. Dengan adanya penambahan SA dalam karbofuran tidak banyak mempengaruhi fluks dan menyebabkan rejeksinya meningkat. Sedangkan penambahan SA pada 2,4D meningkatkan nilai fluks dan menurunkan tingkat rejeksi

Pengaruh Penambahan Extracellular Polymeric Substance (EPS) Sebagai Biostimulan Terhadap Laju Degradasi Lumpur IPAL PT. Indofood CBP

PT. Indofood CBP as one of the food industry that produces ingredients as its product does not miss from sludge treatment issues. The sludge inflicts troubles on the environment and PT. Indofood CBP, since there is no effective handling and processing. Extracellular Polymeric Substances (EPS) as one of alternative sludge treatment. By varying volume of the sludge: 300 gr, 400 gr, and 450 gr, and mass of the EPS: 350 gr, 400 gr, and 450 gr DW, thus it could be indicated that the more EPS are given and the less amount of sludge volume then a greater degradation of sludge. Obtained data shows the reduction of COD is 65,16% in reactor 1, 69,15% in reactor 2, 81,78% in reactor 3, 53,19% in reactor 4, 57,85% in reactor 5, 65,82% in reactor 6, 44,55% in reactor 7, 45,88% in reactor 8, 47,21% in reactor 9, 36.57% in control reactor. And the reduction of BOD is 59,29% in reactor 1, 60,62% in reactor 2, 65,04% in reactor 3, 51,77% in reactor 4, 52,65% in reactor 5, 55,75% in reactor 6, 37,61% in reactor 7, 39,82% in reactor 8, 44.69% in reactor 9, 35,84% in control reactor

Studi Kemampuan Vertical Subsurface Flow Constructed Wetland Dalam Menyisihkan Konsentrasi Tss, TDS, Dan Orp Pada Lindi Mengggunakan Tumbuhan Alang-alang (Typha Angustifolia)

In general, the leachate contains organic and inorganic substances with a high concentration that are toxic. Leachate TPS Industrial Estate Terboyo have TSS content of 530 mg / l, TDS 1930 ppm, and ORP value was 193 mv. Therefore, the processing of leachate is very important before being dumped directly into the recipient's body of water in order not give a bad influence on the quality of the environment. One of the technologies to manipulate the leachate i.e. using constructed wetlands. This research aims to know the decrease in concentration of TSS, TDS, and ORP with the system sub surface flow constructed wetland. The type of plant that used in this research is Typha angustifolia which has been used in several previous research (Hamdani, 2013) with a system of sub-surface flow constructed wetland to reduce the organic pollution load in wastewater. In addition, plant Typha angustifolia grows and develops around the site. The research was conducted with a residence time of 15 days. There are 4 reactors were observed and made in duplicate, with a variation of the number of plants, among other: 1 plant ,3 plants,5 plants, and without plant and the residence time variation among others: 3,6,9,12, and 15 days. Sampling was done with a variation interval of 3 days was based on the results of research conducted by Tangahu & Warmadewanthi (2001) and Ismaryanto (2012). System Vertical Subsurface Flow Constructed Wetlands by use of plant Thypa angustifolia could remove the concentration of TSS, TDS, and change the rate of ORP. Highest TSS removal efficiency in the reactor that contains 5 plants with a residence time of 15 days, amounting to 97.55% and for TDS occur in the reactor which contains 1 plant with a residence time of 6 days, by 77%. While the ORP value changes are not too significant, which is about 200 mV in the overall residence time

Penyisihan Kadar Cod Dan Nitrat Melaluikultivasi Chlorella SP. Dengan Variasi Konsentrasi Limbah Cair Tahu

Limbah cair tahu merupakan salah satu jenis pencemar yang dapat mencemari lingkungan. Kandungan bahan organiknya yang tinggi dapat menyebabkan penurunan kualitas lingkungan apabila langsung dibuang ke badan air. Produsen tahu masih didominasi oleh industri skala kecil, sehingga diperlukan pengolahan yang murah, mudah dan praktis penerapannya untuk mengatasi masalah tersebut. Penelitian ini bertujuan untuk mengkaji potensi Chlorella sp. dalam meyisihkan kadar COD dan nitrat yang terkandung didalam limbah cair tahu dengan konsentrasi 0, 10, 20, 25, 30, 40, 50, 75 dan 100%. Parameter yang diamati adalah kelimpahan sel, laju pertumbuhan sel, nilai COD dan nitrat.Hasil penelitian menunjukkan bahwa pertumbuhan sel tertinggi teramati pada perlakuan konsentrasi 30% dengan nilai rata-rata 9.850.000 sel/mL. Sedangkan penyisihan kadar COD dan nitrat juga terlihat pada konsentrasi 30% sebesar 71,54% dan 30,03%

Analisa Hubungan Jumlah Kendaraan Dan Faktor Meteorologi (Suhu, Kelembaban Udara Dan Kecepatan Angin) Terhadap Peningkatan Konsentrasi So2 Pada Persimpangan Jalan Kota Semarang (Studi Kasus : Jl. Karangrejo Raya, Jl. Sukun Raya Dan Jl. Ngesrep Timur V)

Sulphur Dioxide (SO2) is a colorless gas, non-flammable and has odour can cause irritate respiration. Sources of SO2 come from anthropogenic and natural source. One of anthropogenic source from vehicles gas emissions, and that source estimated can contribute 1/3 of SO2 in atmosphere. Ammount of SO2 in excessive consentrations (20 ppm) can cause negative impacts for human health, especially cause irritation of respiration system and sight. Motor vehicles that passing and queuing at the intersection due to traffic lights can increase the concentration of SO2. This is because when the queue happens, incomplete combustion occurs resulting in a much larger emissions. The purposes of this study are to analiysis ammount of vehicle, meteorological factors such as temperature, humidity and wind speed to concentration of SO2 and comparing SO2 concentration in Karangrejo Raya Road, Sukun Raya Road and East Ngesrep V Road. SO2 concentration measurements carried out at the junction of Karangrejo Raya Road, Sukun Raya Road and East Ngesrep V Road with two sampling points, are points near the traffic lights and 150 meters from the traffic lights. SO2 sampling and calculation of the number of passing vehicles is done 3 times a day : at morning (07:00 to 08:00), daytime (13:00 to 14:00) and afternoon (16:00 to 17:00). Based on the results of the study, the concentration of SO2 produced by Karangrejo Raya Road was 15-21 μg/Nm3, the concentration of SO2 in the Sukun Raya Road was 14-18 μg/Nm3 and SO2 concentrations in East Ngesrep V Road was 0.4 to 6 V μg/Nm3. From the results of research and analysis, the concentration of SO2 in the Karangrejo Raya roads is the highest concentration, compared with Sukun Raya roads and East Ngesrep V roads. This is because more types of motor vehicle diesel fuel passing the Karangrejo Raya roads

Pengaruh Jumlah Kendaraan Dan Faktor Meteorologis (Suhu, Kelembaban, Kecepatan Angin) Terhadap Peningkatan Konsentrasi Gas Pencemar No₂ (Nitrogen Dioksida) Pada Persimpangan Jalan Kota Semarang

Every day, the number of vehicles on the road is increasing. It will cause increasing of pollutant gases. According to Soedomo (2001) as an overview, transportation sector accounted for 69% of NO2 pollution in urban areas, followed by industry and households. According to Fardiaz (1992) NO2 concentrations in the air of a city varies throughout the day depending on sunlight and vehicles activity. NO2 concentrations are also influenced by meteorological factors, it's temperature, humidity, and wind speed. Karangrejo Raya street, Sukun Raya street, Ngesrep Timur V street of Semarang is located at the intersections in Banyumanik. Karangrejo street and Sukun Raya street are center of activity because it is a populated residential area, while Ngesrep Timur V street is a center of educational facilities because there are several universities are located in this region. The method used is sampling directly at the site when the rush hour of vehicles in the morning (7:00 to 08:00), noon (13:00 to 14:00), and afternoon (16:00 to 17:00) for 12 days each 3 days row at Karangrejo Raya street, Sukun Raya street, and Ngesrep Timur V street and the last 3 days compared every other street using impinger and anemometer. Based on the research that has been analyzed, the concentration of NO2 at Karangrejo Raya street ranged from 0.7 to 4.2 mg / Nm3, the concentration of NO2 at Sukun Raya street ranged from 1.0 to 4.1 mg / Nm3, while the concentration of NO2 on the Ngesrep Timur V ranged from 0.2 to 1.7 mg / Nm3. It shows that the concentration of NO2 in three sreets are far below the quality standard