Wastewater treatment for reuse in urban agriculture; the case of Moshi Municipality, Tanzania

Kihila, Jacob; Mtei, Kelvin; Njau, Karoli N.

doi:10.1016/j.pce.2014.10.004

Cited by 44 publications

(38 citation statements)

References 24 publications

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“…For instance, García-Delgado et al [40] saved considerable amounts of fertilizer (37% N, 66% P and 12% K) by applying treated urban wastewater in pepper cultivation. In fact, wastewater effluent reuse has been widely implemented in many countries with Israel and California (USA) leading wastewater reuse with 65-70% of the wastewater reused in agriculture [41].…”

Section: Effect Of Influent Feeding Mode (Pulse Vs Continuous)mentioning

confidence: 99%

Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

Melián

Borreguero-Fabelo

Araña

et al. 2018

Water

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Abstract:A hybrid constructed wetland mesocosm has been used for the treatment of raw urban wastewater. The first stage was a mulch-based, subsurface, horizontal flow constructed wetland (HF). The HF achieved good removals of COD (61%; 54 g/m 2 ·day) and Total Suspended Solids (84%; 29 g/m 2 ·day). The second stage was composed of vertical flow constructed wetlands (VF) that were employed to study the effect of substrate (gravel vs. mulch), feeding mode (continuous vs. intermittent) and the number of stages (1 vs. 2) on performance. High hydraulic and organic surface loadings (513-583 L/m 2 ·day and 103-118 g/m 2 ·day of COD) were applied to the reactors. The mulch was more efficient than gravel for all the parameters analyzed. The continuous feeding allowed a 3 to 6-fold reduction of the surface area required.

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Section: Effect Of Influent Feeding Mode (Pulse Vs Continuous)mentioning

confidence: 99%

Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

Melián

Borreguero-Fabelo

Araña

et al. 2018

Water

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“…Nessa perspectiva, a utilização de água residuária poderá ser fonte de nutrientes para as plantas e, com isso, possibilitar redução na aplicação de adubos minerais em áreas de cultivo agrícola (KIHILA et al, 2014).…”

Section: Introductionunclassified

Potencial, Economia De Água E Adubação Com a Aplicação De Efluente Do Tratamento Preliminar De Esgoto Doméstico Na Fertirrigação De Capim-Elefante

Marques

Matos

Pereira

et al. 2017

HOLOS

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A fertirrigação como alternativa de disposição final de esgoto doméstico é uma solução viável, tendo em vista o baixo custo de sua implantação, o aproveitamento dos nutrientes pelas plantas e a obtenção de melhorias na estruturação do solo. Neste trabalho, será avaliado o potencial do uso de efluente do tratamento preliminar de esgoto doméstico (EDP), a economia de água na irrigação e na adubação, considerando--se sua qualidade química para fertirrigação do capim--elefante (Pennisetum purpureum). Cada parcela experimental foi constituída por 4 linhas plantadas e 3 sulcos de aplicação de água/esgoto doméstico, sendo o espaçamento entre linhas de 0,6 m e o comprimento de 40 m. Foram impostos dois tratamentos: T1 -- aplicação de adubação química convencional e água potável, em irrigação; e T2 --aplicação, em fertirrigação, de EDP, sendo a necessidade hídrica das plantas complementada com água da rede de abastecimento. A dose de aplicação do EDP foi estabelecida considerando--se suas características químicas e as necessidades nutricionais e de água do capim--elefante. Os resultados obtidos demonstraram que o EDP utilizado na fertirrigação do capim--elefante, considerando--se uma lâmina de aplicação para fornecimento de 300 kg ha --1 ano --1 de Na, foi capaz de suprir 100% do P 2 O 5 , 33% do K 2 O e 93% do N demandado na adubação do capim--elefante, gerando uma economia financeira de US$ 445,00 ha --1 , no que se refere à adubação; de US$ 624,00 ha --1 , no que se refere ao custo de produção; e de US$ 6,00 ha --1 , no que se refere ao custo de irrigação, proporcionando uma economia total de US$ 630,00 ha --1 e uma economia hídrica de 58% do total demandado. PALAVRAS--CHAVE:Custo de produção, custo de irrigação, economia hídrica. POTENTIAL, WATER AND FERTILIZATION ECONOMY WITH APPLICATION OF PRELIMINARY TREATMENT EFFLUENT OF DOMESTIC SEWAGE IN FERTIGATION OF ELEPHANT GRASS ABSTRACTFertigation as an alternative of final disposal of domestic sewage is a viable solution, considering the low cost of its implantation, the use of nutrients by the plants and the obtaining of improvements in the soil structure. In this work, the potential of the effluent of the preliminary domestic sewage treatment (PST), the water savings in irrigation and fertilization, will be evaluated, considering its chemical quality for elephant grass (Pennisetum purpureum) fertigation. Each experimental plot consisting of 4 planted lines and 3 water/domestic sewage application grooves, between 0.6 m and 40 m long lines. Two treatments were imposed: T1 --application of conventional chemical fertilization and drinking water, in irrigation; and T2 -- application in PST fertigation, being the water requirement of the plants complemented with water from the supply network. The application rate of EDP was established considering its chemical characteristics and the nutritional and water needs of elephant grass . The results showed that the EDP used in elephant grass fertigation, considering an application sheet for to supply 300 kg ha --1 ano --1 of Na, wa...

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“…Some of the countries in which the use of low-quality water has been reported include Greece, Israel and Italy (Kalavrouziotis et al, 2013), Australia (Barker, Amoah, & Drechsel, 2014), Palestine (Shaheen, 2003), Bangladesh (Mojid, Biswas, & Wyseure, 2012), Tanzania (Kihila, Mtei, & Njau, 2014) and Ghana (Keraita, Drechsel, & Konradsen, 2008a ;Owusu, Bakang, Abaidoo, & Kinane, 2011). Like many parts of the world, Tanzania is using low-quality water in irrigation to cope with climate change challenges that cause unreliable of rainfall and periodic drought (Kihila et al, 2014). Low-quality water is used for irrigated agriculture as an alternative source of water since the resource is readily available during the time needed, is free of charge and accessible (Weckenbrock et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…A recent study by Kihila et al (2014) in Moshi, Tanzania on wastewater treatment for reuse in urban agriculture looked at the perception of farmers on the quality of wastewater as well as their acceptance of the crop grown using such water, but did not look at the farmers' perceptions of the health hazards of using low-quality water. Furthermore, most studies in the field of low-quality water use in irrigated agriculture identified the health hazards of low-quality water based on laboratory test results of stool samples of the exposed group.…”

Section: Introductionmentioning

confidence: 99%

Perceived Health Hazards of Low-Quality Irrigation Water in Vegetable Production in Morogoro, Tanzania

Mayilla¹,

Magayane²,

Keraita³

et al. 2015

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This study assessed the perceptions of vegetable farmers, traders, consumers and key informants on the health hazards of using low-quality water in irrigation vegetable production in Morogoro, Tanzania. Methods used to collect data were a survey involving all farmers in Changarawe village and Fungafunga area using low-quality water for irrigation vegetable production (n=60), consumers of low-quality water irrigated vegetables (n=70) and vegetable traders selling low-quality water irrigated vegetables (n=60), focus group discussions (n=7) and key informant interviews (n=25). The study employed cross sectional research design. Descriptive statistics were used to calculate mean, frequencies and percentages while Mann-Whitney U-test and Kruskal-Wallis H-test assessed the association between social-demographic variables and respondents score on the health hazard perception scale of using low-quality water in vegetable production. Results showed skin itching, fungal diseases, bilharzias and worm infestation as among the perceived health hazards in using low-quality irrigation water. Health hazard perception differed among groups of farmers, consumers and vegetable traders (p<0.001). The mean ranks of the groups indicated that farmers perceive less health hazards in using low-quality water (mean rank = 147.98) compared to consumers (mean rank = 72.68) and vegetable traders (mean rank 69.64). More health hazards were perceived by Fungafunga farmers compared to farmers from the Changarawe village (p<0.001) while female farmers perceived less hazards in using low-quality water than male farmers (p < 0.05). Consumers with formal education perceived more health hazards than consumers with no formal education (p < 0.001) while vegetable traders from Fungafunga area perceived more health hazards in selling low-quality water irrigated vegetable than vegetable traders from the Changarawe village (p<0.001). These findings demonstrate the need to design health hazards minimization interventions for specific target group.

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Wastewater treatment for reuse in urban agriculture; the case of Moshi Municipality, Tanzania

Cited by 44 publications

References 24 publications

Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

Potencial, Economia De Água E Adubação Com a Aplicação De Efluente Do Tratamento Preliminar De Esgoto Doméstico Na Fertirrigação De Capim-Elefante

Perceived Health Hazards of Low-Quality Irrigation Water in Vegetable Production in Morogoro, Tanzania

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