Comparison of nutrient removal and bacterial communities between natural zeolite-based and volcanic rock-based vertical flow constructed wetlands treating piggery wastewater

2013 ◽  
Vol 51 (22-24) ◽  
pp. 4379-4389 ◽  
Author(s):  
Xu Huang ◽  
Chaoxiang Liu ◽  
Chunfang Gao ◽  
Zhen Wang ◽  
Gefu Zhu ◽  
...  
Keyword(s):  
Volcanic Rock ◽  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Bacterial Communities ◽  
Natural Zeolite ◽  
Vertical Flow ◽  
Piggery Wastewater ◽  
Vertical Flow Constructed Wetlands

Nutrient removal from piggery effluent using vertical flow constructed wetlands in southern Brazil

2003 ◽  
Vol 48 (2) ◽  
pp. 129-135 ◽  
Author(s):  
P.H. Sezerino ◽  
V. Reginatto ◽  
M.A. Santos ◽  
K. Kayser ◽  
S. Kunst ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Pilot Plant ◽  
Vertical Flow ◽  
Southern Brazil ◽  
Environmental Legislation ◽  
Swine Production ◽  
Nitrogen And Phosphorus ◽  
Piggery Wastewater ◽  
Vertical Flow Constructed Wetlands ◽  
P Removal

Santa Catarina State, southern Brazil, has the greatest swine breeding activities of Latin America. Generally, the piggery wastewater is treated in pond systems that are able to remove organic material according to local environmental legislation. However, these systems do not remove nitrogen and phosphorus efficiently. This work deals with a post-treatment system, using vertical flow constructed wetlands. The experiment was conducted in a swine production farm which has 45,000 animals. Although the pond system was able to partially remove the content of nutrients, their concentration in the effluent was high for environmental disposal. A four-bed vertical flow constructed wetland pilot plant, using Typha spp., was built. The pilot plant operated for 280 days for beds 2-4 (sand 2). However, the experiments with beds 1-3 (sand 1) were stopped after 111 days of operation, when a reduction in the wastewater drainage was observed. The beds with sand 2 showed a 33% COD removal, and about 49% of nitrification was observed from 111 days until the end of the operation. PO4-P removal was 45% with a loading rate of around 1.36 g m-2 d-1.

Nutrient removal as a function of benzene supply within vertical‐flow constructed wetlands

2010 ◽  
Vol 31 (6) ◽  
pp. 681-691 ◽  
Author(s):  
Xianqiang Tang ◽  
Miklas Scholz ◽  
Paul Emeka Eke ◽  
Suiliang Huang
Keyword(s):  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Vertical Flow ◽  
Vertical Flow Constructed Wetlands

Vertical flow constructed wetlands: kinetics of nutrient and organic matter removal

2014 ◽  
Vol 70 (1) ◽  
pp. 76-81 ◽  
Author(s):  
M. M. Pérez ◽  
J. M. Hernández ◽  
J. Bossens ◽  
T. Jiménez ◽  
E. Rosa ◽  
...  
Keyword(s):  
Organic Matter ◽  
Removal Efficiency ◽  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Domestic Wastewater ◽  
Vertical Flow ◽  
Order Model ◽  
Organic Matter Removal ◽  
Vertical Flow Constructed Wetlands ◽  
Kinetics Of

The kinetics of organic matter and nutrient removal in a pilot vertical subsurface wetland with red ferralitic soil as substrate were evaluated. The wetland (20 m2) was planted with Cyperus alternifolius. The domestic wastewater that was treated in the wetland had undergone a primary treatment consisting of a septic moat and a buffer tank. From the sixth week of operation, the performance of the wetland stabilized, and a significant reduction in pollutant concentration of the effluent wastewater was obtained. Also a significant increase of dissolved oxygen (5 mg/l) was obtained. The organic matter removal efficiency was greater than 85% and the nutrient removal efficiency was greater than 75% in the vertical subsurface wetland. Nitrogen and biochemical oxygen demand (BOD) removal could be described by a first-order model. The kinetic constants were 3.64 and 3.27 d−1 for BOD and for total nitrogen, respectively. Data on the removal of phosphorus were adapted to a second-order model. The kinetic constant was 0.96 (mg/l)−1 d−1. The results demonstrated the potential of vertical flow constructed wetlands to clean treated domestic wastewater before discharge into the environment.

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