Effect on Treatment of the Landfill Leachate with the Furrow Irrigation in Onland Planting Reed (<i>Phragmites</i>)
- 1 Dalian Jiaotong University,
- 2 Dalian Jiaotong University
- 3 Extensive Center of Agricultural Technology
Abstract
The furrow irrigation tests were done to estimated the efficiency of the HRT(Hydraulic Retention Time) and landfill leachat collected from Dalian Maoyimgzi Municipal Solid Waste Landfill, which contained high level of COD (Chemical Oxygen Demand, 3.8 × 10 4 mg·L –1 ), TOC (total carbon, 4.8 × 10 3 mg·L –1 ), TN(total nitrogen, 2.9 × 10 3 mg·L –1 ) and SS (Suspended Solids, 6.5 × 10 2 mg·L –1 ), using the reed (phragmites) cultivated onland located in south area of Dalian Jiaotong University. The results showed that: 1) The TN concentration was decreased from 9.8 × 10 2 mg·L –1 in the landfill leachate to 7.6 × 10 2 mg·L –1 in the soil water, and the 22.4% of the removal rate; 2) The TOC concentration was decreased from 4.8 × 10 3 mg·L –1 in the landfill leachate to 1.0 × 10 3 mg·L –1 in the soil water, and the 79.2% of re- moved rate; 3) The water concentration in the soil was no significant difference of irrigation between the water and the landfill leachate; 4) ΔHRT was 2.1 hours in irrigation 39 L of the water and landfill leachate and 1.3 hours in the 9 L.
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