Potential of hybrid constructed wetland system in treating milking parlor wastewater under cold climatic conditions in northern Hokkaido, Japan

Sharma, Pradeep Kumar; Inoue, Takashi; Kato, Kunihiko; Ietsugu, H.; Tomita, Kunihiko; Nagasawa, Tooru

doi:10.2166/wpt.2011.052

Cited by 15 publications

(17 citation statements)

References 13 publications

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“…These results are comparable to or higher than those recorded for other hybrid CWs operating in similar climate conditions [13,14,41]. In the studied system, the majority of the organic pollutants discharged from the preliminary settling tank were removed at the first purification stage in VF beds, which is consistent with the results of other authors [12,[42][43][44][45]. The average rates of BOD 5 reduction in the VF-IA and VF-IB beds were 93.6% and 96.4%, respectively.…”

Section: Composition Of Treated Wastewater and The Efficiency Of Pollsupporting

confidence: 91%

The Efficiency and Reliability of Pollutant Removal in a Hybrid Constructed Wetland with Common Reed, Manna Grass, and Virginia Mallow

Marzec

Jóźwiakowski

Dębska

et al. 2018

Water

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In this paper, the pollutant removal efficiency and the reliability of a vertical and horizontal flow hybrid constructed wetland (CW) planted with common reed, manna grass, and Virginia mallow were analyzed. The wastewater treatment plant, located in south-eastern Poland, treated domestic sewage at an average flow rate of 2.5 m3/d. The tests were carried out during five years of its operation (2014–2018). The following parameters were measured: biochemical oxygen demand (BOD5), chemical oxygen demand (COD), total suspended solids, total nitrogen, and total phosphorus. The results showed that more than 95% of BOD5, COD, and total phosphorus was removed in the tested CW system. The average effectiveness of removal of total suspended solids and total nitrogen exceeded 86%. A reliability analysis performed using the Weibull probability model showed that the removal reliability in the tested CW was very high for BOD5, COD, total suspended solids, and total phosphorus (100%). The probability that the total nitrogen concentration in the treated effluents would reach the limit value (30 mg/L) established for effluents discharged from a treatment plant of less than 2000 PE (population equivalent) to standing waters was 94%. The values of all the pollution indicators in wastewater discharged to the receiver were significantly lower than the limit values required in Poland. The investigated hybrid CW system with common reed, manna grass, and Virginia mallow guaranteed stable low values of BOD5, COD, total suspended solids, and total phosphorus in the treated wastewater, which meant it was highly likely to be positively evaluated in case of an inspection.

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Section: Composition Of Treated Wastewater and The Efficiency Of Pollsupporting

confidence: 91%

The Efficiency and Reliability of Pollutant Removal in a Hybrid Constructed Wetland with Common Reed, Manna Grass, and Virginia Mallow

Marzec

Jóźwiakowski

Dębska

et al. 2018

Water

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“…Six multi-stage hybrid wetland systems were designed for treating high-content wastewater in the cold climate of Hokkaido, northern Japan (Kato et al 2010, Sharma et al 2011). …”

Section: System Design Climate and Other Informationmentioning

confidence: 99%

Performance of six multi-stage hybrid wetland systems for treating high-content wastewater in the cold climate of Hokkaido, Japan

Kato

Inoue

Ietsugu³

et al. 2013

Ecological Engineering

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The performance of six multi-stage hybrid wetland systems, which were designed and constructed for treating high-content wastewater, was evaluated in the cold climate of Hokkaido, northern Japan. The systems were designed to treat four kinds of wastewater: dairy wastewater (three systems, average inflow 4.9-46.6 m 3 .d -1 , average inflow content 2,400-5,000mg.COD.l -1 , 2-5 years of operation); wastewater from a pig farm, including liquid food washing wastewater (one system, 4.1 m Keywords hybrid constructed wetland; cold climate; dairy milking parlor;potato starch processing wastewater; swine urine; oxygen transfer rate 4 IntroductionJapan's food self-sufficiency ratio is only about 40%, which is remarkably low compared to other industrialized countries. A large surplus of nitrogen and phosphorus is given to animals as feed, which is mostly imported from abroad (Yano et al. 1999).Moreover, the nitrogen and phosphorus from animal manure exceed fertilizer needs because of the small area of farmland in Japan. Treatment of dairy milking parlor wastewater, potato starch processing wastewater, and swine urine wastewater has been a big problem in Hokkaido, northern Japan, where such wastewaters are polluting rivers and groundwater. Conventional mechanical wastewater treatments are expensive. Thus, there is an urgent need for a low-cost technology for treating such wastewater.Constructed wetlands for pollution control have progressed greatly over the past 20 years (Cooper 2009;Vymazal 2009; Kadlec et al. 2000). Moreover, hybrid systems have been in use since the 1980s (Vymazal 2011). Several important studies about the selection of filter media, the treatment performance at low temperature, and the recirculation effect have been conducted in cold climates (Poldvere et al. 2009(Poldvere et al. , 2010Jenssen et al. 2005Jenssen et al. , 2010Speer et al. 2012). However, issues of clogging and freezing for treating high-content wastewater in cold climates still remain. To overcome these issues, we designed and constructed multi-stage hybrid reed bed systems in 2005 with a safety bypass and a floating cover to treat high-content wastewater in the cold climate of Hokkaido, Japan (Kato et al. 2006(Kato et al. , 2009 Mean temperature, rainfall, assessment period, and assessment number are shown in ** All systems operated throughout the year except the system for the potato starch factory P, which was designed to work from May to November. *** P1 was preserved wastewater from May to August and P2 was fresh wastewater from September to November. Schematic diagramA schematic diagram of the hybrid wetland system is shown in Fig. 1. Our systems are composed of three to four V flow beds with a self-priming siphon and no or one horizontal (H) flow bed with a total of three to five beds. A French-type self-priming siphon was applied for the V flow bed with minor modifications; each dosing pipe was single for simplicity and easy maintenance (Kato et al. 2006(Kato et al. , 2009. Some effluents were recirculated (Vr) to the inlet...

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“…Hybrid CWs has gained popularity all over the world and been operated for the treatment of various kinds of waste waters. (Burka and Lawrence, 1990;Kantawanichkul and Neamkam, 2003;Brix et al, 2003;Bulc, 2006;Öövel, 2007;Tuszyñska, 2008;Justin, 2009;Singh et al, 2009;Vymazal, 2011;Serrano et al, 2011), however limited studies are available reflecting the treatment potential of hybrid CWs for high strength dairy/milking parlor wastewater under extremely cold climates (Reeb and Werckmann, 2005;Abe et al, 2010, Sharma et al, 2011.…”

Section: Ssf Cws Can Be Differentiated As Horizontal Sub-surface Flowmentioning

confidence: 99%

“…Details of filter material and surface vegetation of all beds can be found in Sharma, et al, (2011).…”

Section: Filter Material Bed Depth Surface Vegetationmentioning

confidence: 99%

Seasonal efficiency of a hybrid sub-surface flow constructed wetland system in treating milking parlor wastewater at northern Hokkaido

Sharma

Inoue

Kato

et al. 2013

Ecological Engineering

View full text Add to dashboard Cite

Potential of hybrid constructed wetland system in treating milking parlor wastewater under cold climatic conditions in northern Hokkaido, Japan

Cited by 15 publications

References 13 publications

The Efficiency and Reliability of Pollutant Removal in a Hybrid Constructed Wetland with Common Reed, Manna Grass, and Virginia Mallow

The Efficiency and Reliability of Pollutant Removal in a Hybrid Constructed Wetland with Common Reed, Manna Grass, and Virginia Mallow

Performance of six multi-stage hybrid wetland systems for treating high-content wastewater in the cold climate of Hokkaido, Japan

Seasonal efficiency of a hybrid sub-surface flow constructed wetland system in treating milking parlor wastewater at northern Hokkaido

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