Swine effluent post-treatment by alkaline control and UV radiation combined for water reuse

Bilotta, Patrícia; Steinmetz, R. L. R.; Kunz, Airton; Mores, Rúbia

doi:10.1016/j.jclepro.2016.10.033

Cited by 21 publications

(8 citation statements)

References 24 publications

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“…A case study of water reuse in the Middle East evaluated UV disinfection for inactivating enteric pathogens remaining after treatment by constructed wetlands (Azaizeh et al., 2013). UV disinfection also showed a high performance in disinfecting swine secondary effluent for water reuse under alkaline-controlled conditions in Catarina, Brazil (Bilotta et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Application of a novel, continuous-feeding ultraviolet light emitting diode (UV-LED) system to disinfect domestic wastewater for discharge or agricultural reuse

et al. 2019

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In many low-income countries, the poor conditions of sanitation systems have been a significant cause of mortality since they accelerate waterborne disease transmission. Developing sanitation systems in these countries is a pressing concern in both the public and private sectors. This research investigated a decentralized domestic wastewater treatment system using ultraviolet light-emitting diodes (UV-LEDs). Although UV-LED disinfection has become more widespread in recent years, it is a novel approach for domestic wastewater treatment. Domestic wastewater was pretreated by a low-cost pretreatment system with an inclined settler and a sand filter prior to feeding a novel flow-through UV LED reactor. At an inlet flow rate of 30 L/h, the COD, TSS, and turbidity of the effluent were 17.7 mg/L, 3.0 mg/L, and 3.9 NTU, respectively. UV transmittance at 285 nm was enhanced from 29.1% to 70.4%, improving the influent quality for UV LED disinfection. The flow-through UV LED reactor was operated at various flow rates from 10 to 50 mL/min, resulting in applied UV doses of 69.4 to 47.8 mJ/cm 2 respectively. These doses are sufficient for inactivating total coliforms in the wastewater to meet the water reuse guidelines for agriculture for both processed food crops and non-food crops. Fouling, which was observed starting at 2 d of operation, decreased the disinfection efficacy to 27% after 25 days of continuous operation. Of the fouling layer, 67% was attributed to organic matter, in contrast to previous fouling studies with mercury UV lamps in which the fouling layer consisted primarily of inorganic compounds. The fouling was reversed by off-line citric acid cleaning for 4 h after every 400 h of continuous operation.

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Section: Introductionmentioning

confidence: 99%

Application of a novel, continuous-feeding ultraviolet light emitting diode (UV-LED) system to disinfect domestic wastewater for discharge or agricultural reuse

et al. 2019

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“…Yet the positive effects are the increase of organic matter and nutrients in the soil (Assmann et al, 2007). Furthermore, there are still some concerns about antimicrobial agents applied on a large scale and in an unbiased manner, which, when detected in wastewater, may lead to a genetic resistance of microorganisms, and then becoming environmental contaminants Moura et al, 2016;Bilotta et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Swine Wastewater: Impacts on Soil, Plant, and Leachate

et al. 2017

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“…For effective disinfection, it is better to have less opacity than one NTU. Also, turbidity of more than NTU 5 is detectable and leads to consumer complaints [16][17][18]. Turbidity in the water is generally created by suspended matter like soil and mud, fine organic and mineral substances, soluble colored organic compounds, plankton, and other microorganisms [19].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Electrocoagulation Process Efficiency Using Astraglus Gossypinus Tragacanth in Turbidity Removal from Brackish Water Samples

Zarei¹,

Biglari²,

Mobini³

et al. 2018

Pol. J. Environ. Stud.

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Swine effluent post-treatment by alkaline control and UV radiation combined for water reuse

Cited by 21 publications

References 24 publications

Application of a novel, continuous-feeding ultraviolet light emitting diode (UV-LED) system to disinfect domestic wastewater for discharge or agricultural reuse

Application of a novel, continuous-feeding ultraviolet light emitting diode (UV-LED) system to disinfect domestic wastewater for discharge or agricultural reuse

Swine Wastewater: Impacts on Soil, Plant, and Leachate

Enhancing Electrocoagulation Process Efficiency Using Astraglus Gossypinus Tragacanth in Turbidity Removal from Brackish Water Samples

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