Trends in domestic waste water treatment in Sweden

Multi-Soil-Layering (MSL) method was applied to make appropriate, but high performance and N & P-removable, on-site domestic waste water treatment system. The MSL soil unit is composed from soil layer mixed with 10∼25% of metal iron and pelletized jute. The MSL units were piled in a brick pattern at 5cm vertical and 10cm horizontal distance, which were surrounded by layers of Zeolite. Air can be supplied through porous pipes installed at adequate depths of the MSL system. The systems were tested using model houses. The waste waters, which were pretreated by septic tank to the level of SS 29-75, BOD 42-116, COD 32-56, T-N 29-86, and T-P 6-11 mg−l−1 respectively, could be treated at the rate of 100-850 1·m−2·d−1 without significant clogging. The mean concentrations of treated waters were SS 15, BOD 8.7, COD 11, T-N 6.8, and T-P 0.86 mg·1−1 respectively. Zeolite layers and brick pattern prevent clogging. Metal iron and jute pellets were effective to remove Phosphate and Nitrate. Intensive aeration assists decomposition of BOD, COD, and SS as well as nitrification, but decreases denitrif ication and phosphate fixation. The degree of purification could be controlled by setting adequate aeration.

Download Full-text

System Analysis of Domestic Waste Water Treatment Facilities

Ecology and Industry of Russia ◽

10.18412/1816-0395-2016-3-18-23 ◽

2016 ◽

Vol 20 (3) ◽

pp. 18-23 ◽

Cited By ~ 2

Author(s):

E.I. Pupyrev

Keyword(s):

Waste Water ◽

Water Treatment ◽

System Analysis ◽

Waste Water Treatment ◽

Domestic Waste ◽

Treatment Facilities

Download Full-text

Domestic waste-water treatment using membrane bioreactors

Membrane Technology ◽

10.1016/s0958-2118(00)90581-0 ◽

2000 ◽

Vol 2000 (119) ◽

pp. 16

Keyword(s):

Waste Water ◽

Water Treatment ◽

Waste Water Treatment ◽

Membrane Bioreactors ◽

Domestic Waste

Download Full-text

Pengolahan Air Limbah Domestik Menggunakan Kombinasi Settlement Tank dan Fixed-Bed Coloumn Up-Flow

Jurnal Teknik Kimia dan Lingkungan ◽

10.33795/jtkl.v2i2.72 ◽

2018 ◽

Vol 2 (2) ◽

pp. 84

Author(s):

Khalimatus Sa’diyah ◽

Muchamad Syarwani ◽

S. Sigit Udjiana

Keyword(s):

Waste Water ◽

Water Pollution ◽

Water Treatment ◽

Waste Water Treatment ◽

Fixed Bed ◽

Domestic Waste ◽

Aeration Time ◽

Bed Height ◽

Sand Beds

Air limbah domestik yang memiliki kadar BOD, COD, TSS, Turbidity dan pH tinggi menjadi salah satu penyebab pencemaran air. Sehingga perlu adanya pengolahan lebih lanjut sebelum dibuang ke sungai atau badan air. Salah satu pengolahan air limbah yang bisa digunakan adalah kombinasi settlement tank dan fixed-bed coloumn up-flow. Alat ini dipilih karena harganya terjangkau, bahan mudah didapat dan peralatannya mudah dioperasikan. Tujuan utama penelitian ini untuk menurunkan kadar turbidity, TSS dan BOD. Penurunan parameter ini dipengaruhi oleh waktu settlement tank, waktu pengontakkan effluent dan tinggi unggun pasir. Hasil penelitian pada settlement tank secara aerob didapatkan persen penurunan turbidity, TSS dan BOD yang tertinggi pada settlement tank 6 hari dengan nilai 48,21%; 75,27% dan 52,84 %. Pada alat fixed-bed coloumn up-flow secara kontinyu dengan waktu aerasi settlement tank 6 hari didapatkan persen penurunan turbidity yang tertinggi pada tinggi unggun pasir 20 cm sebesar 18,57%, sedangkan persen penurunan TSS dan BOD yang paling tinggi pada tinggi unggun pasir 30 cm yaitu 41,46% dan 11,23%.Domestic waste water is one of the causes of water pollution. Domestic waste water has high levels of BOD, COD, TSS, Turbidity and pH. Therefore, it need futher processing so that the conditions is safe when discharged in river or lake. One of waste water treatment is combination of settlement tank and fixed-bed coloumn up-flow. This equipment is selected because the price is affordable, materials and equipment can be obtained, and easy to operate. The main purpose of this study is to decrease levels of turbidity, TSS and BOD. Decreased parameters are affected by time of seetlement tank, time of effluent contact and high of sand beds. Result of research on settelement tank aerob obtained highest percentage of turbidity, TSS and BOD decrease in 6 day settlement tank with value 48.21%, 75.27% and 52.84%. In a continuous fixed-bed coloumn up-flow with aeration time, 6-day in settlement tank, obtained the highest percentage of turbidity reduction at 20 cm sand bed height of 18.57%, while the highest percentage of TSS and BOD reduction in sand bed height was 30 cm is 41.46% and 11.23%.

Download Full-text