Biofilm structure and its influence on clogging in drip irrigation emitters distributing reclaimed wastewater

Yan, Donghang; Bai, Zhihui; Rowan, Michael A.; Gu, Li; Ren, Shumei; Yang, Peiling

doi:10.1016/s1001-0742(08)62349-9

Cited by 80 publications

(43 citation statements)

References 31 publications

(31 reference statements)

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“…Correlations of biofi lm biomass and discharge reduction after 360 h irrigation were computed that suggested that phospholipid fatty acids (PFLAs) provided the best correlation coeffi cient. Comparatively, in a physicochemical study in China the emitters with unsymmetrical dentate structure and shorter fl ow path (Emitter C) had the best anti-clogging capability (Yan et al 2009 ). In an experimental study in China, chemical precipitation was found to be the primary source of emitter clogging for both the treated sewage effl uent and freshwater treatments, which was mainly due to their relatively higher total dissolved solids and alkalinity.…”

Section: Irrigation Equipmentmentioning

confidence: 99%

Global Experiences on Wastewater Irrigation: Challenges and Prospects

Valipour

Singh

2016

Water Science and Technology Library

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The need for irrigated agriculture is growing day by day and the largest water withdrawals from renewable water resources are for irrigation. In addition, the available water resources are decreasing and we need to use non-conventional water resources for irrigation due to looming water crisis (Raschid-Sally and Jayakody, Drivers and characteristics of wastewater agriculture in developing countries: results from a global assessment. International Water Management Institute, Colombo, 35p, (IWMI Research Report 127), 2008). However, the volume of treating and using wastewater is limited due to the lack of adequate data and knowledge and/or negative effects of improper wastewater management (i.e. use of untreated wastewater). A comprehensive evaluation of what has been done is necessary in order to explore wastewater irrigation and to avoid trial-and-error policies. Although a study of wastewater irrigation from crops, soil, groundwater, health, irrigation equipments, modern technologies, and other environmental aspects is useful, management studies in comparison with other aspects can help lead to more reliable and more extensive fi ndings and fi nally a better decision on using wastewater for irrigation. The chapter presents challenges and prospects that may help decision making for the use of wastewater in irrigation.

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Section: Irrigation Equipmentmentioning

confidence: 99%

Global Experiences on Wastewater Irrigation: Challenges and Prospects

Valipour

Singh

2016

Water Science and Technology Library

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“…However, drip irrigation systems show high susceptibility to emitter clogging (Liu & Huang, 2009;Li et al, 2011; when wastewater is applied (Dazhuang et al, 2009;Yan et al, 2009;Batista et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Biological treatment of drippers clogged by the use of treated domestic wastewater

Costa

Batista

Vale

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThis study aimed to recover the flow rate of clogged drippers with different doses and permanence times of the product MaxBio. The experiment was conducted in a completely randomized design in split-split-plot scheme, where the plots corresponded to product doses (80, 160, 240 and 320 mg L -1 ), subplots to the applied treatments (T1 -without biological treatment, T2 -1 st application of the product, and T3 -2 nd application of the product) and in sub-subplots the types of emitters (Plastro Hydrodrip Super, Netafim Tiran and Netafim PCJ-CNJ), with three replicates. The four irrigation units operated with treated domestic wastewater for 400 h in order to clog the emitters. After applying the product MaxBio, the flow rate of the drippers and the relative flow rate reduction were determined to express the unclogging levels. There was significant effect of T2 and T3 on the recovery of the flow rate of the drippers, while for the reduction of relative flow rate, the doses of the product did not show statistical difference regarding the types of drippers.Tratamento biológico de gotejadores obstruídos pelo uso de efluente doméstico tratado R E S U M O Objetivou-se, neste trabalho, recuperar a vazão de gotejadores obstruídos com diferentes dosagens e tempos de permanência do produto MaxBio. O experimento foi montado no delineamento inteiramente casualizado em esquema de parcelas subsubdivididas tendo, nas parcelas, as doses do produto (80, 160, 240 e 320 mg L -1 ), nas subparcelas, os tratamentos aplicados (T1 -sem tratamento biológico; T2 -1ª aplicação do produto e T3 -2ª aplicação do produto) e, nas subsubparcelas, os tipos de gotejadores (Plastro Hydrodrip Super, Netafim Tiran e Netafim PCJ-CNJ), em três repetições. As quatro unidades de irrigação operaram com água residuária doméstica tratada, durante 400 h proporcionando a obstrução dos gotejadores. Após aplicação do produto MaxBio a vazão dos gotejadores e a redução da vazão relativa foram determinadas para expressar os níveis de desobstrução. Na recuperação da vazão dos gotejadores houve efeito significativo dos tratamentos T2 e T3 enquanto para a redução da vazão relativa às doses do produto não apresentaram diferença estatística em relação aos tipos de gotejadores.

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“…Previous studies have focused on biofilm formation and clogging during reutilization of wastewater for irrigation purposes (Capra et al 2004;Lubello et al 2004;Yan et al 2009;Tarchitzky et al 2013). Among them, Yan et al (2009) analyzed the matrix structure in biofilms from drip irrigation emitters distributing reclaimed water using scanning electron microscopy (SEM).…”

Section: Introductionmentioning

confidence: 99%

Prevalence of potentially thermophilic microorganisms in biofilms from greenhouse-enclosed drip irrigation systems

et al. 2014

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A manuscript re-submitted to: Archives of Microbiology AbstractDrip irrigation systems using reclaimed water often present clogging events of biological origin. Microbial communities in biofilms from microirrigation systems of an experimental greenhouse in Almería, SE Spain, which used two different qualities of water (treated wastewater and reclaimed water), were analyzed by DGGE (Denaturing Gradient Gel Electrophoresis) and subsequent sequencing of amplified 16S rRNA gene bands. The most remarkable feature of all biofilms was that regardless of water origin, sequences belonging to Firmicutes were prevalent (53.5% of total mean band intensity) and that almost all sequences recovered had some similarity (between 80.2 and 97%) to thermophilic microorganisms. Mainly, sequences were closely related to potentially spore-forming organisms, suggesting that microbial communities able to grow at high temperatures were selected from the microbiota present in the incoming water. These pioneer results may contribute to improve management strategies to minimize the problems associated to biofouling in irrigation systems.

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Biofilm structure and its influence on clogging in drip irrigation emitters distributing reclaimed wastewater

Cited by 80 publications

References 31 publications

Global Experiences on Wastewater Irrigation: Challenges and Prospects

Global Experiences on Wastewater Irrigation: Challenges and Prospects

Biological treatment of drippers clogged by the use of treated domestic wastewater

Prevalence of potentially thermophilic microorganisms in biofilms from greenhouse-enclosed drip irrigation systems

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