Prasetyo, Endry Nugroho (2002) Pemanfaatan Reaktor Sistem Zona Akar untuk Menyisihkan Pencemar Limbahy Cair Domestik dan Pengaruhnya pada Ketahanan Padi (Oryza Sativa. L) Terhadap Penyakit. Masters thesis, Institut Teknologi Sepuluh November.
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Abstract
Constructed wetland system atau sistem lahan basah buatan merupakan metode penyisihan limbah dengan memanfaatkan tanaman dan tanah sebagai penyisih beban organik dalam air limbah. Zona akar tanaman dalam constructed wetland membantu menciptakan kondisi penguraian secara aerobik dan anaerobik karena pada akar terdapat sejumlah besar populasi mikroorganisme yang berfungsi menguraikan materi di dalam limbah. Di samping itu, limbah yang berupa nutrien dapat berfungsi sebagai tambahan hara, sehingga tanaman yang dihasilkan dapat tumbuh dengan baik dan lebih tahan terhadap serangan penyakit.
Penelitian terhadap aplikasi sistem zona akar dilakukan untuk menganalisis tingkat penyisihan pencemar limbah cair domestik oleh reaktor zona akar lahan basah buatan serta pengaruhnya terhadap ketahanan padi (Oryza sativa L.) terhadap penyakit.
Dirancang lima kelompok percobaan yang terdiri atas tiga macam variasi debit (Q1 = 7,5 L/hari, Q2 = 11,25 L/hari, dan Q3 = 15 L/hari) dan dua kontrol. Selanjutnya, dilakukan pengukuran terhadap kandungan BOD5, N-total, P-total, K-total, dan bakteri coliform pada bagian inlet dan outlet reaktor, serta persentase jumlah daun padi yang terinfeksi oleh jamur tertentu. Limbah cair dari septic tank rumah tangga digunakan sebagai influen reaktor.
Hasil penelitian menunjukkan bahwa reaktor sistem zona akar padi dapat menurunkan BOD5 hingga rata-rata 91,04% pada debit 11,25 L/hari (Hydraulic Loading Rate = 62,5 L/hari·m²), serta dapat menurunkan kandungan hara limbah, yaitu N sebesar 55,91% (Q2 = 11,25 L/hari), P sebesar 99,61% (Q3 = 15 L/hari), dan K sebesar 12,59% (Q2 = 11,25 L/hari). Selain itu, reaktor dapat menurunkan kandungan bakteri coliform hingga 98,51% (Q1 = 7,5 L/hari). Terdapat pula peningkatan ketahanan padi terhadap penyakit, dengan rata-rata persentase infeksi pada akhir penelitian sebesar 1,08% pada Q1 = 7,5 L/hari.
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Constructed wetland system is a method to remove liquid waste pollutant by using plants and soil as organic loading remover in domestic wastewater. Root zone plant in constructed wetland support to make aerobic and anaerobic condition, while the population of microorganism at root zone make degradation of nutrient in wastewater. Beside that, nutrient in wastewater could become additional fertilizer that makes improve the blast resistance of plant.
The application of root zone system had been studied to analyzing the level of root zone constructed wetland reactor performance and its effect on rice (Oryza sativa. L) blast resistance.
Five groups of research consisted of 3 groups with different flow rate ( Qi = 7, 5 L/day, Q_{2} = 11, 25L / d * ay Q_{3} = 1SL / d * ay ) and 2 groups as control groups. The measurement was taken toward the concentration of BOD5, N-total, P-total, K-total, and coliform and the number of the rice leaves which were infected by certain blast rice. Liquid wastewater from septic tank used for reactor influent.
The results showed that the rice root zone reactor decreases BOD5 concentration up to about 91.04% at flow rate 11.25 L/day (Hydraulic Loading Rate 62.5 L/day.m²), and decreases the wastewater nutrient concentrations for Lday/), and coliform concentration up to 98.51% Q_{1} = 7.5L / d * ay ). In addition there was an increase of the blast rice resistance with average infection percentage at the end of research 1.08% at Q_{2} = 7.5L / d * ay (Q_{3} = 15L / d * ay) ( Q_{2} = 11.25 P = 99.61% K = 12.59% (Q_{2} = 11.25L / d * ay) N = 55.91%
| Item Type: | Thesis (Masters) |
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| Additional Information: | RT 628.168 2 Pra p |
| Uncontrolled Keywords: | Limbah domestik, constructed wetland, sistem reaktor zona akar, padi, domestic wastewater, constructed wetland, rice, root zone system |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD646 Sewage--Purification |
| Divisions: | Faculty of Civil, Environmental, and Geo Engineering > Environmental Engineering > 25101-(S2) Master Theses |
| Depositing User: | magang . |
| Date Deposited: | 21 Sep 2026 06:42 |
| Last Modified: | 21 Sep 2026 06:42 |
| URI: | http://repository.its.ac.id/id/eprint/144737 |
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