Phosphorus Removal Efficiency of Different Media and Macrophyte in Constructed Wetland

2010 ◽  
Vol 113-116 ◽  
pp. 2368-2372
Author(s):  
R.P. Singh ◽  
Ying He Jiang ◽  
Xiao Peng Wen
Keyword(s):  
Fly Ash ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Nutrient Removal ◽  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Research Work ◽  
Common Reed ◽  
Treated Municipal Wastewater ◽  
Wastewater Use

Constructed wetlands are very useful for the removal of nutrients from treated municipal wastewater. Use of different kinds of media and macrophytes improves the efficiency of nutrient removal of constructed wetlands. Three different media (pulverized ash bricks, shale and gravel) and common reed (Phragmites spp.) were used for present research work. This macrophyte is a local weed and easily available. Uses of different media with macrophyte are very efficient for nutrient removal from treated municipal wastewater. Out of these three media used for present research pulverized fly ash bricks media was most efficient for removal of phosphorus in constructed wetland.

scholarly journals Reuse of Treated Municipal Wastewater from Constructed Wetlands for Cut Flowers Irrigation in Aeroponic Cultivation

2020 ◽  
Vol 24 ◽  
Author(s):  
Ismael Leonardo Vera-Puerto ◽  
Jorge Leonardo Olave-Vera ◽  
Sussy Tapia ◽  
Wladimir Antonio Chávez ◽  
Carlos Arias
Keyword(s):  
Constructed Wetlands ◽  
Municipal Wastewater ◽  
Cut Flower ◽  
Cut Flowers ◽  
Cultivation System ◽  
Cultivation Systems ◽  
Arid Conditions ◽  
Affected Plant ◽  
Treated Municipal Wastewater

The aim of this work is to evaluate the reuse of municipal wastewaters treated through subsurface constructed wetlands (SS-CWs) as irrigation water in cut flower aeroponic cultivation under arid conditions. For this purpose, two experimental aeroponic cultivation systems were installed with the cut flower Lilium ‘Tresor’ planted and irrigated with SS-CWs treated water. The results showed that the quality of the SS-CWs wastewater has to be improved to be used in irrigation. Despite that, Lilium ‘Tresor’ grew under arid conditions with normal stem diameters and number of flowers but with heights under 0.65 m, which would restrict their commercialization to local markets. Water electrical conductivity (> 2300 µs/cm) and luminosity (> 120 klux) were factors that affected plant height. When compared to other cultivation systems, the aeroponic cultivation system used between 10 % and 20 % of the amount of water needed to produce Lilium ‘Tresor.’ Thus, this work showed the feasibility to produce cut flowers using an aeroponic cultivation system under arid conditions and irrigated with SS-CWs effluents. Likewise, it was detected that improvements to water quality and luminosity must be made for industrial scaling.

Installation of a bioelectrochemical system as a pre-cleaner in a constructed wetland with higher pollutant loading under continuous mode

2020 ◽  
Vol 6 (12) ◽  
pp. 3326-3340
Author(s):  
Manoj Kumar ◽  
Rajesh Singh
Keyword(s):  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Municipal Wastewater ◽  
Vertical Flow ◽  
Continuous Mode ◽  
Bioelectrochemical System ◽  
Two Phase ◽  
Pollutant Loading ◽  
Vertical Flow Constructed Wetlands

In this study, two-phase continuous vertical flow constructed wetlands were installed with a pre-cleaner bioelectrochemical system for the removal of NH4+-N (60.41–85.78%), NO3−-N (25.55–35.18%), TN (57.80–84.65%), TKN (37.24–70.08%), PO43−-P (38.89–63.40%), SO42− (49.53–76.06%), and COD (25.83–74.70%) from municipal wastewater.

scholarly journals Constructed wetlands in the treatment of agro-industrial wastewater: A review

2015 ◽  
Vol 69 (2) ◽  
pp. 127-142 ◽  
Author(s):  
Mar-Yam Sultana ◽  
Christos Akratos ◽  
Dimitrios Vayenas ◽  
Stavros Pavlou
Keyword(s):  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Municipal Wastewater ◽  
Industrial Effluents ◽  
Design Tool ◽  
Pollutant Removal ◽  
Toxic Substances ◽  
Wetland Type ◽  
Industrial Wastewaters ◽  
Hostile Environments

Due to their simplicity and low operation cost, constructed wetlands are becoming more prevalent in wastewater treatment all over the world. Their range of applications is no longer limited to municipal wastewater but has expanded to the treatment of heavily polluted wastewaters such as agro-industrial effluents. This paper provides a comprehensive literature review of the application of constructed wetlands in treating a variety of agro-industrial wastewaters, and discusses pollutant surface loads and the role of constructed wetland type, prior-treatment stages and plant species in pollutant removal efficiency. Results indicate that constructed wetlands can tolerate high pollutant loads and toxic substances without losing their removal ability, thus these systems are very effective bio-reactors even in hostile environments. Additionally, the review outlines issues that could improve pollutant treatment efficiency and proposes design and operation suggestions such as suitable vegetation, porous media and constructed wetland plain view. Finally, a decision tree for designing constructed wetlands treating agro-industrial wastewaters provides an initial design tool for scientists and engineers.

scholarly journals Role of different plants on nitrogen and phosphorus removal at low temperature in lab-scale constructed wetlands

2019 ◽  
Vol 118 ◽  
pp. 01023 ◽  
Author(s):  
Liwei Xiao ◽  
Hong Jiang ◽  
Chao Shen ◽  
Ke Li ◽  
Lei Hu
Keyword(s):  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Phosphorus Removal ◽  
Sichuan Basin ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Relative Growth ◽  
Stems And Leaves ◽  
Removal Efficiencies

In this study, plant growth and nitrogen and phosphorus removal efficiency in lab-scale CWs by five plants (H. vulgaris, N. peltatum, N. tetragona, N. pumilum, S. trifolia) in winter in Sichuan basin was evaluated. H. vulgaris and N. tetragona would well adapt to the winter wetland environment, and the relative growth at the end of the experiment was 89.83% and 66.85%, respectively. In winter, H. vulgaris kept growing with accumulated stems and leaves, while growth of N. tetragona was mainly caused by the growth of roots and stems underwater. In addition, during the winter, removal efficiencies were 66.29%, 57.47%, 54.78%, 55.47%, 41.66% of TN and 62.40%, 69.75%, 69.97%, 65.65%, 76.55% of TP for each planted CWs respectively. The results indicated that the removal of nitrogen and phosphorus from CWs was mainly achieved by substrate, while a small portion was attributed by plant. However, plants like H. vulgaris and N. tetragona, in the CWs in winter can play the role of landscaping. Thus, H. vulgaris could be considered as a suitable and effective nutrient removal plant for treatment of nitrogen and phosphorus water in winter wetlands in Sichuan basin.

Treatment of municipal wastewater using horizontal flow constructed wetlands in Egypt

2013 ◽  
Vol 69 (1) ◽  
pp. 38-47 ◽  
Author(s):  
Sohair I. Abou-Elela ◽  
G. Golinelli ◽  
Abdou Saad El-Tabl ◽  
Mohammed S. Hellal
Keyword(s):  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Municipal Wastewater ◽  
Removal Rate ◽  
Oxygen Demand ◽  
Total Coliform ◽  
Horizontal Flow ◽  
Organic Loading Rate ◽  
Reclaimed Wastewater ◽  
Treated Effluent

The aim of this study was to evaluate the performance of two pilot horizontal flow constructed wetlands (HFCWs) with and without vegetation. Three types of plants namely Canna, Phragmites australis and Cyprus papyrus were used. The surface area of each plant was 654 m2. The flow rate was 20 m3 d−1 and the organic loading rate range was 1.7–3.4 kg BOD d−1 with a detention time of 11 days. The results obtained showed that planted HFCW produced high quality effluent in terms of reduction of chemical oxygen demand (COD; 88%), biochemical oxygen demand (BOD; 91%) and total suspended solids (TSS; 92%) as well as nutrient removal. In addition, 4 logs of total coliform were removed from the planted unit compared with only 3 logs in the unplanted one. The phosphate uptake by the plants reached 29, 30.91 and 38.9 g P m−2 for Canna, Phragmites and Cyprus, respectively, with 60% removal rate in the treated effluent. The nitrogen uptake by the same plants reached 63.1, 49.46 and 82.33 g N m−2. Although, the unplanted unit proved to be efficient in the removal of COD, BOD and TSS, it lacks efficiency in pathogen and nutrient removal. The reclaimed wastewater, after disinfection, could be reused for non-restricted irrigation purposes.

Performance of an innovative FWS constructed wetland in Crete, Greece

2002 ◽  
Vol 46 (4-5) ◽  
pp. 355-360 ◽  
Author(s):  
G. Dialynas ◽  
N. Kefalakis ◽  
M. Dialynas ◽  
A. Angelakis
Keyword(s):  
Constructed Wetland ◽  
Municipal Wastewater ◽  
Local Community ◽  
Treatment Plant ◽  
Free Water ◽  
Small Community ◽  
General Sense ◽  
Development Organization ◽  
Treated Municipal Wastewater ◽  
Very High

Pompia is an ancient name of a small community in Messara valley, which is the main agricultural area, in central Crete. The constructed wetland in Pompia is a free water surface (FWS) system, for treating the wastewater of the local community of 1,200 p.e. That wastewater treatment plant (WWTP) is a pilot plant but it is simple, safe, innovative, and environmentally friendly. The WWTP was funded by the Region of Crete. The Eastern Crete Development Organization was responsible for the design, supervision, management, and initial operation. The project was completed in August 1999, and has been under operation since then. The effluent is considered to be equivalent to tertiary treated municipal wastewater, and it will be used to irrigate olive orchards. The general sense for a visitor is that the FWS system operates like a natural marsh and a habitat of birds and wild animals. In addition, very high removal rates for BOD5, COD, TSS, TKN, TP, TC, and FC have been obtained.

Nutrient Removal from Polluted River Water by Using Vertical and Horizontal Subsurface Flow Constructed Wetlands

2011 ◽  
Vol 393-395 ◽  
pp. 1304-1307 ◽  
Author(s):  
En Shi ◽  
Zong Lian She ◽  
Tian Xie ◽  
Jian Wu ◽  
Xiao Hui Fu
Keyword(s):  
River Water ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Nutrient Removal ◽  
Subsurface Flow ◽  
Vertical Flow ◽  
Experiment Research ◽  
Nitrogen And Phosphorus ◽  
Polluted River ◽  
Subsurface Flow Constructed Wetland

The main purpose of this study was to treat organic pollutants, nitrogen and phosphorus in polluted river water by the use of constructed wetland (CW) systems. A laboratory experiment research was conducted on subsurface flow constructed wetland systems operated in vertical flow (VF) and horizontal flow (HF) mode. The systems were unplanted and hydraulic retention times were identically 2.7 days. The average removal efficiencies for HFCW and VFCW were NH+ 4-N 64.9% and 75.2%, NO- 3-N 92.3% and 40.1%, COD 97.5% and 90.1%, TP 94.6% and 96.2%, respectively. The removal of NH+ 4-N and NO- 3-N in the different CW units were in order of VFCW (drained) > VFCW (flooded) > HFCW and HFCW > VFCW (flooded) > VFCW (drained), respectively. When the water level in the VFCW was changed, an obvious fluctuation of the effluent NH+ 4-N and NO- 3-N concentrations was observed.

Sign in / Sign up

Export Citation Format

Share Document