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PERBANDINGAN PENGOLAHAN AIR SUNGAI CITARUM, AIR SUPERNATAN PRASEDIMENTASI, AIR EFLUEN GUTERTAP (GUGUS FILTER MULTITAHAP) MENGGUNAKAN KOAGULAN ALUMINUM SULFAT DAN SERBUK BIJI KELOR (MORINGA OLEIFERA) Gede Cahyana; Heri Heryana; Tri Mulyani
ENVIROSAN : Jurnal Teknik Lingkungan Vol 1, No 2 (2018): ENVIROSAN Desember 2018
Publisher : Universitas Kebangsaan

ABSTRAKSudah dilaksanakan penelitian pengolahan air Sungai Citarum menggunakan koagulan aluminum sulfat dan serbuk biji kelor (Moringa oleifera) dengan Jar Test. Ada tiga tingkat kekeruhan yang diteliti, yaitu air Citarum berkekeruhan 214 NTU, air Citarum yang diendapkan dua jam berkekeruhan 48,4 NTU, dan air Citarum yang diolah terlebih dahulu dengan Gutertap (Gugus Filter atau Filtrasi Multitahap), kekeruhan efluennya 14,7 NTU. Dosis optimum yang diperoleh bervariasi untuk tiga kekeruhan air dan tiga koagulan. Aluminum sulfat dan serbuk biji kelor tanpa lemak mampu menurunkan kekeruhan dengan efisiensi lebih dari 95%. Serbuk biji kelor berlemak perlu dosis yang lebih besar untuk menurunkan kekeruhan dengan efisiensi lebih dari 95%. Tetapi pada air efluen Gutertap yang rendah kekeruhannya, efisiensi ketiga koagulan tidak lebih dari 45%. Diperoleh bahwa makin keruh air, makin besar efisiensi penurunan kekeruhannya, baik dengan koagulan alum sulfat maupun biji kelor berlemak dan tanpa lemak. Serbuk biji kelor mampu memberikan muatan listrik positif (kation) yang menetralkan muatan negatif koloid. Selama pertumbuhan flok, koloid dan suspended solid ikut terperangkap di dalam flok sehingga air menjadi lebih jernih. Kata kunci : Citarum, kekeruhan, aluminum sulfat, biji kelorABSTRACTWater treatment research for Citarum River has been done using coagulants aluminum sulphate and Moringa oleifera seeds powder with Jar Test. Three different turbidities have been tested, e.g. Citarum water with turbidity 214 NTU, supernatant water 48,4 NTU, and effluent of Multistage Filtration (Gutertap) 14,7 NTU. Dose of coagulants are varied for three turbidities and three kind of coagulants. Aluminum sulphate and nonfatty Moringa powder could reduce turbidity more than 95%. Fatty Moringa powder needs more dose to reduce turbidity for 95%. But in case of low turbidity of Gutertap effluent, efficiency of the three coagulants were less than 45%. Concluded that more turbid the water, the reduction of turbidity will be higher both for aluminum sulphate and Moringa powder with and without fat. This happened because of the electrical charge of Moringa powder. In the process of flocc growth, colloidal and suspended solid are trapped in floccs so that the water become clearer.Keywords: Citarum, turbidity, aluminum sulphate, Moringa seed

PENGOLAHAN AIR LIMBAH RUMAH SAKIT MENGGUNAKAN HORIZONTAL SUBSURFACE FLOW CONSTRUCTED WETLAND Gede H. Cahyana; Annisha Nur Aulia
ENVIROSAN : Jurnal Teknik Lingkungan Vol 2, No 2 (2019): ENVIROSAN Desember 2019
Publisher : Universitas Kebangsaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31848/ejtl.v2i2.396

Activated sludge is a wastewater treatment reactor widely applied for hospital. The reactor requires a mechanical aerator as a source of oxygen. At the same time, Subsurface Flow Constructed Wetland is rarely used. Both types of reactors utilize microbes in reducing pollutants of wastewater. The role of microbes in activated sludge is taken over by microbes that grow in the root zone of Typha latifolia and Vetiver sp. Two laboratory scale reactors were made to get serial data on the performance of the two plants in treating hospital wastewater. The result, the removal efficiency of COD on Q1 = 0.13 l/h and COD on Q2 = 0.43 l/h for Typha latifolia plants were 87.71% and 67.61%. On Vetiver sp. plants were 90,07% and 68,32%. The removal efficiency of BOD5 on Q1 = 0.13 l/h and Q2 = 0.43 l/h for Typha latifolia plants were 90.00% and 71.7%. On Vetiver sp. plants were 91.69% and 73.29%. The efficiency of Total Kjeldahl Nitrogen removal (TKN) Q1 = 0.13 l/h and Q2 = 0.43 l/h for Typha latifolia plants were 91.27% and 61.54%, whereas in Vetiver sp. plants were 92.01% and 62.68%. Horizontal Subsurface Flow Constructed Wetland is capable and feasible for hospital wastewater treatment. Keywords: Subsurface Flow Constructed Wetland, Typha latifolia, Vetiver sp.

ANALISIS PENGUKURAN KONSENTRASI KARBONMONOKSIDA (CO) PADA BREATHING ZONE PETUGAS PARKIR BASEMENT MALL KOTA BANDUNG Gede H Cahyana
ENVIROSAN : Jurnal Teknik Lingkungan Vol 2, No 1 (2019): ENVIROSAN Juni 2019
Publisher : Universitas Kebangsaan

Indoor air pollution in a closed room is one of the air pollutions that gives serious threats to human health. One of them comes from vehicle gas emissions in the closed parking area. This research identifies and analyses CO concentration measured in Mall X parking man’s breathing zone with closed parking area and in Mall Y semi-opened parking area. CO measurement carried out by passive sampling method using Personal Dosimeter Tubes. The measurement result of CO gas concentration to parking man’s breathing zone in Mall X was 25 – 81,25 ppm with the average value in 50 ± 26,15 ppm. Meanwhile, CO gas concentration in Mall Y gave result 3,13 – 12,5 ppm with the average value in 7,88 ± 4,36 ppm. Correlation value between CO concentration and its intake in Mall X area was 0,9983, meanwhile correlation value between CO concentration and its intake in Mall Y area was 0,9903. It was concluded that CO gas concentration measured in parking man’s breathing zone influenced the differences in CO intake value in significance value. Keywords: carbon monoxide, indoor air pollution, passive sampling, vehicle emission

PENGOLAHAN AIR LIMBAH LABORATORIUM MENGGUNAKAN METODE AOPs (ADVANCED OXIDATION PROCESSES) DENGAN PEREAKSI FENTON (H2O2 dan FeSO4) PADA SKALA BATCH gede cahyana
ENVIROSAN : Jurnal Teknik Lingkungan Vol 1, No 1 (2018): ENVIROSAN Juni 2018
Publisher : Universitas Kebangsaan

ABSTRAKAir limbah laboratorium berasal dari aktivitas uji di laboratorium dan bersifat limbah berbahaya dan beracun. Air limbah ini berbeda dengan air limbah berbahaya dan beracun dari industri karena terdiri atas banyak ragam polutan. Komposisinya yang variatif dan berbahaya ini menyebabkan sulit diolah dengan pengolahan biologi. Oleh sebab itu, dicoba pengolahan kimia, yaitu Advanced Oxidation Processes (AOPs) atau Proses Oksidasi Lanjut. Penelitian ini bertujuan mendapatkan dosis optimum pereaksi Fenton (H2O2 dan FeSO4) dalam menurunkan Chemical Oxygen Demand (COD). Diterapkan tiga variasi konsentrasi COD: 10.090,09 mg/L, 5.009,01 mg/L dan 511,71 mg/L dengan variasi rasio pereaksi. Diperoleh dosis optimum pereaksi Fenton 1 : 300 dengan efisiensi penurunan COD sebagai berikut: konsentrasi COD 10.090,09 mg/L = 21,43%, konsentrasi COD 5.009,01 mg/L = 46,76% dan konsentrasi COD 511,71 mg/L = 83,10%. Hasil ini menyatakanbahwa Fenton mampu menurunkan COD limbah cair laboratorium hingga 80% pada konsentrasi yang relatif rendah.Kata Kunci : air limbah laboratorium, Fenton, CODABSTRACTLaboratory wastewater was derived from analytical activities in the laboratory and grouped to hazardous waste. It was different from hazardous industrial wastewater because of many different pollutants. The composition of its dangerous substances was not easy to be processed by biological process. Therefore, chemical method was tried, namely Advanced Oxidation Processes (AOPs). The optimum dose of Fenton (H2O2 and FeSO4) reagent was the purpose to reduce the concentration of Chemical Oxygen Demand (COD). Variations applied were COD concentrations, which were 10,090,09 mg / L, 5.009,01 mg / L and 511,71 mg / L with varied reagen. The optimum dose of Fenton reagent was obtained 1: 300 with COD reduction efficiency as follows: COD concentration 10,090,09 mg / L = 21,43%, COD concentration 5.009,01 mg / L = 46,76% and concentration of COD 511,71 mg / L = 83,10%. The results suggested that Fenton could to reduce COD concentration up to 80% in relatively low concentrations.Keywords: laboratory wastewater, Fenton, COD, batch

Desinfeksi Novel Corona Virus di Dalam Air Minum PDAM dan Air Limbah Untuk Fase Normal Baru Gede H. Cahyana
Jurnal Serambi Engineering Vol 5, No 3 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i3.2173

The purpose of this literature review is to review the effectiveness of chlorination in eradicating viruses (and bacteria) in drinking water and wastewater so that people can get scientific information on the practice of eradicating the new Corona virus. The research method was carried out by reviewing scientific articles obtained from the search engine scholar.google.com, the National Library website and textbooks. Chlorine is able to deactivate the virus on objects that are splashed by the patient's saliva. Giving chlorine doses of 0.2–40 mg / l and remaining free chlorine 0.2–0.5 mg / l, chlorination is effective in eradicating viruses and bacteria in drinking water. When the bacteria die, the virus dies or is inactive. The new Corona virus blanket can also be destroyed by chlorine. Researchers have also found genetic traces of the new Corona virus in wastewater. The genetic traces of the new Corona virus found in wastewater could be a latent danger for a new outbreak in the post-pandemic or new normal period. PDAM water that contains chlorine becomes important during the new normal period so it must be provided in public and social facilities.

Pengolahan Air Limbah Betalaktam Menggunakan Reagen Kaporit, PAC, dan Alum Sulfat Gede H. Cahyana; Gilang Gumilar; Tri Mulyani
Jurnal Serambi Engineering Vol 6, No 3 (2021): Juli 2021
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v6i3.3118

Beta lactam antibiotics are pollutant in water bodies such as lakes and rivers. Beta lactam rings may have a negative impact on living beings in lakes and rivers. Beta lactam rings also cause resistance or bacterial resistance to antibiotics. If human beings are exposed to beta lactam ring, this could negatively impact on their health. This study attempted to break down the beta lactam rings with several chemical reagents. These reagents hydrolyze the beta lactam ring and are then analyzed using the HPLC (High Performance Liquid Chromatography) instrument. This study aims to determine the how effective the reagent for breaking the beta lactam ring. The research was conducted in three stages: preliminary research, research on reagent effectiveness , and research on β-lactamase degradation using reagents. The results showed that calcium hypochlorite was able to break the beta lactam cycle with 100% efficiency.

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