Bacterial application increased the flow rate of CaCO3-clogged emitters of drip irrigation system

Eroğlu, Seçkin; Şahin, Üstün; Tunç, Talip; Şahi̇n, Fikrettin

doi:10.1016/j.jenvman.2011.12.014

Cited by 28 publications

(22 citation statements)

References 17 publications

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“…Drip irrigation systems stand out for the use of wastewater within the environmental context (DAZHUANG et al, 2009;EROGLU et al, 2012). Although this technology limits human exposure to wastewater and presents high application efficiency, the susceptibility to clogging of the emitters by biofouling emerges as a potential problem (BATISTA et al, 2010;PUIG-BARGUES et al, 2010;SILVA et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Drip Units Operating With Dilute Landfill Leachate

et al. 2016

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-Drip irrigation systems stand out for the use of wastewater, by minimizing water losses and risks to the environment and public health, however, the clogging of emitters is a potential problem in this technology. The objective of this study was to evaluate the flow coefficient of variation (FCV) and the coefficient of statistical uniformity (CSU) of drip irrigation units operating with water-diluted landfill leachate. The experiment was conducted in a completely randomized split-plot design, with emitter types in the plots (G1 -non-pressure compensating, and G2, G3 and G4 -pressure compensating) and evaluation times in the subplots (0, 20, 40, 60 80, 100, 120, 140 and 160 hours), with four replications. The FCV, CSU and physicochemical and biological characteristic values of the dilute landfill leachate were determined every 20 hours to complete 160 hours of operation of the drip units. The biofouling caused major value changes in the FCV and the CSU of the drip unit with the G1 emitter (non-pressure compensating) compared to the units with the G2, G3 and G4 emitters (pressure compensating). The G3 emitter was the most adequate for applying the dilute landfill leachate.Keywords: Wastewater. Biofouling. Irrigação. UNIDADES GOTEJADORAS OPERANDO COM PERCOLADO DE ATERRO DILUÍDORESUMO -Os sistemas de irrigação por gotejamento se destacam para a aplicação de águas residuárias, devido à minimização das perdas de água, dos riscos ambientais e de saúde pública, porém a obstrução dos emissores representa um problema potencial dessa tecnologia. Objetivou-se com este trabalho avaliar o coeficiente de variação de vazão (FCV) e o coeficiente de uniformidade estatístico (Us) de unidades gotejadoras abastecidas com percolado de aterro sanitário diluído em água de abastecimento. O experimento foi conduzido sob delineamento inteiramente casualizado no esquema de parcelas subdivididas, tendo nas parcelas os tipos de gotejadores (G1 não autocompensante; e G2, G3 e G4 autocompensantes) e nas subparcelas os tempos de avaliação (0, 20, 40, 60, 80, 100, 120, 140 e 160 horas), com quatro repetições. Os valores de FCV, CSU e das características físico-químicas e biológicas do percolado de aterro sanitário diluído foram determinadas a cada 20 horas, até completar 160 horas de operação das unidades gotejadoras. A bioincrustação proporcionou maiores alterações nos valores de FCV e CSU da unidade gotejadora com gotejador G1 (não autocompensante) em relação às unidades dotadas dos gotejadores G2, G3 e G4 (autocompensantes). O gotejador G3 foi o mais adequado na aplicação do percolado de aterro sanitário diluído.Palavras-chave: Água residuária. Bioincrustação. Irrigation.

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Section: Introductionmentioning

confidence: 99%

Drip Units Operating With Dilute Landfill Leachate

et al. 2016

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“…The clogging caused by chemical precipitation (scale) from water has been investigated in many fields (Talozi and Hills, ; Li et al ., , , ; Liu and Huang, ). However, there have been few studies of chemical precipitation under saline water application to date (Eroglu et al ., ; Sahin et al ., ). Investigations of the formation mechanism and characteristics of chemical precipitation primarily focused on industrial hard water treatment systems (Barrett and Parsons, ; Coey and Cass, ; Alimi et al ., ).…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers have investigated emitter clogging with different irrigation water quality, and the chemical clogging caused by deposits is considered to be one of the most difficult clogging problems to control (Talozi and Hills, 2001;Li et al, 2009Li et al, , 2012aLi et al, , 2012bLiu and Huang, 2009). It has been reported that emitter clogging under saline water application is closely related to the formation and aggregation of chemical precipitation in a drip irrigation system (Hills et al, 1989;Yuan et al, 1998;Aali et al, 2009;Eroglu et al, 2012;Sahin et al, 2012). The clogging caused by chemical precipitation (scale) from water has been investigated in many fields (Talozi and Hills, 2001;Li et al, 2009Li et al, , 2012aLi et al, , 2012bLiu and Huang, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Sahin et al (2012) evaluated chemical clogging in emitters under magnetized saline water and found that the magnetized treatment could reduce emitter clogging and that the magnetic effect had a negative relationship with water salinity. Eroglu et al (2012) suggested that microbial treatment with Bacillus subtilis OSU-142 could be a novel and environmentally friendly method of reducing chemical clogging of drip irrigation system emitters. Moreover, effective methods of preventing chemical clogging are still needed, in part because the characteristics and mechanisms of emitter chemical clogging are not yet fully understood, and studies of the response mechanisms of chemical clogging under saline water drip irrigation and key substances that result in chemical clogging have rarely been reported.…”

Section: Introductionmentioning

confidence: 99%

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Chemical Clogging of Emitters and Evaluation of Their Suitability for Saline Water Drip Irrigation

Zhangzhong

Yang

Ren

et al. 2016

Irrigation and Drainage

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Drip irrigation with saline water is one of the most effective methods to ease the current worldwide water shortage. However, there are more ionic compositions in saline water, resulting in easy clogging of drip irrigation emitters. In this study, we selected five common emitters as study subjects and conducted a saline water drip irrigation experiment in the Hetao Irrigation District (Inner Mongolia, China). The results showed that, as the running time increased, the discharge ratio variation (Dra) and coefficient of uniformity (CU) both declined. The Dra and CU of cylindrical emitters decreased gently, while those of flat emitters showed a 'slow–fast' downward trend. The Dra of the five different emitters decreased to 46.3–78.6% and the CU dropped to 23.5–85.0% over the course of the experiment. Cylindrical emitters with higher flow showed better anti‐clogging capacity. The temporal and spatial distribution of clogging materials within emitters differed. Specifically, the dry weights (DW) of clogging materials in different positions occurred in the order of DWhead < DWmiddle < DWend laterally, and clogging materials accumulated gradually with time. The average clogging materials distribution density showed a significant negative linear relationship with Dra and CU (R2 = 0.81 and 0.88). It indicated that as the clogging materials accumulated, the anti‐clogging capacity of emitters degraded. The chemical constituents of the clogging materials in the different emitters were the same (Ca + Mg carbonate, quartz, silicate and litter sodium chloride). The amounts of Ca + Mg carbonate showed a strong positive correlation with Dra and CU (R2 = 0.93 and 0.92), while the amounts of quartz showed a remarkable negative linear relationship with Dra and CU (R2 = 0.85 and 0.87). The main material responsible for emitter clogging was calcium carbonate deposits, which accounted for >88.1% of the total. Copyright © 2016 John Wiley & Sons, Ltd.

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“…The most used practices for unclogging the drippers include chemical treatment, using chlorination and acidification (Batista et al, 2012), increase in operating pressure (Silva et al, 2013), washing of lateral lines (Puig-Bargues et al, 2010) and biological treatment (Şahin et al, 2005;Eroglu et al, 2012).…”

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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Bacterial application increased the flow rate of CaCO3-clogged emitters of drip irrigation system

Cited by 28 publications

References 17 publications

Drip Units Operating With Dilute Landfill Leachate

Drip Units Operating With Dilute Landfill Leachate

Chemical Clogging of Emitters and Evaluation of Their Suitability for Saline Water Drip Irrigation

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

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