1.2 Contact details of resource persons and institutions involved in the assessment and documentation of the Technology

Name of project which facilitated the documentation/ evaluation of the Technology (if relevant)

Name of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)

1.3 Conditions regarding the use of data documented through WOCAT

The compiler and key resource person(s) accept the conditions regarding the use of data documented through WOCAT:

Ja

1.4 Declaration on sustainability of the described Technology

Is the Technology described here problematic with regard to land degradation, so that it cannot be declared a sustainable land management technology?

Nee

Comments:

recursos disponibles, son locales

2.1 Short description of the Technology

Definition of the Technology:

El biofiltro para tratamiento de aguas grises es una zanja de cemento llenada con piedrín, arena, y con carbón activado. El agua filtrada puede servir para riego de jardinería y plantas frutales.

2.2 Detailed description of the Technology

Description:

La tecnología del Biofiltro para tratamiento de aguas grises es implementada en la cuenca del Rio Dipilto, en el departamento de Nueva Segovia, en Nicaragua. Se aplica a fincas y hogares de las comunidades y hogares ubicados en zonas peri-urbanas de los municipios de Dipilto y Ocotal. Consiste en una zanja o un foso de 3 metros de largo, revestido de cemento o ladrillo de barro cocido. El ancho es de 0.4 metros y su profundidad es también 0.4 metros. El foso o zanja esta dividido en 4 espacios o divisiones de 0.75 metros cada uno, el primero es para recibir las aguas grises provenientes de las actividades domesticas, el segundo esta lleno de piedrín, el tercero con arena y el ultimo con carbón activado, la pendiente de 2-3% permite la circulación de las aguas grises a través de los materiales filtrantes, el agua sale filtrada por una manguera de 2 pulgadas, la que al final del filtrado es usada para riego en jardineria o frutales. El propósito es el tratamiento de las aguas grises para reducir la contaminación de las aguas superficiales. Para su instalación se necesita piedrín, arena, carbon activado y mangueras de 2 pulgadas. El mantenimiento se realiza mensualmente lavando el piedrín y ocasionalmente la arena si esta muy sucia. El carbón se reemplaza cada año, dependiendo del uso. La tecnología reduce la contaminación del agua y el agua se puede reusar para riego. Los usuarios de la tierra dicen que es excelente porque quita del agua el Jabón, grasas, etc.

2.3 Photos of the Technology

2.5 Country/ region/ locations where the Technology has been applied and which are covered by this assessment

Country:

Nicaragua

Region/ State/ Province:

Nueva Segovia

Further specification of location:

Municipios de Ocotal y Dipilto

Specify the spread of the Technology:

• evenly spread over an area

If the Technology is evenly spread over an area, specify area covered (in km2):

97.0

If precise area is not known, indicate approximate area covered:

• 100-1,000 km2

Is/are the technology site(s) located in a permanently protected area?

Ja

Map

×

2.6 Date of implementation

If precise year is not known, indicate approximate date:

• less than 10 years ago (recently)

2.7 Introduction of the Technology

Specify how the Technology was introduced:

• through projects/ external interventions

Comments (type of project, etc.):

En un programa de gestion comunitaria para el manejo de la cuenca del Río Dipilto.

3.1 Main purpose(s) of the Technology

• conserve ecosystem
• protect a watershed/ downstream areas – in combination with other Technologies
• adapt to climate change/ extremes and its impacts
• create beneficial social impact

3.2 Current land use type(s) where the Technology is applied

Land use mixed within the same land unit:

Ja

Cropland

• Annual cropping
• Tree and shrub cropping

Tree and shrub cropping - Specify crops:

• coffee, shade grown

Number of growing seasons per year:

• 1

Specify:

Hay cultivos que se cosechan todo el año (cultivo de enramadas, frutas, musaceas)

Is intercropping practiced?

Ja

If yes, specify which crops are intercropped:

Cultivos de enramadas (Chayotes, maraculla, granadilla), musaceas (Platano, bananos) Café, Cacao, Firjol.

Is crop rotation practiced?

Nee

3.3 Has land use changed due to the implementation of the Technology?

Has land use changed due to the implementation of the Technology?

• No (Continue with question 3.4)

Settlements, infrastructure

• Settlements, buildings

Remarks:

El poposito de la tecnologia es el tratamiento de las aguas servidas domiciliares

3.4 Water supply

Water supply for the land on which the Technology is applied:

• rainfed

3.5 SLM group to which the Technology belongs

• water diversion and drainage
• surface water management (spring, river, lakes, sea)
• waste management/ waste water management

3.7 Main types of land degradation addressed by the Technology

water degradation

other

Specify:

La tecnología esta destinada a enfrentar la reduccion de la calidad de las aguas superficiales originadas por las aguas grises o servidas que llevan consigo contaminantes como jabón, grasas, detergentes y aceite, que son vertidas directamente a las masas de agua fresca en la cuenca del Río Dipilto.

3.8 Prevention, reduction, or restoration of land degradation

Specify the goal of the Technology with regard to land degradation:

• not applicable

4.1 Technical drawing of the Technology

Technical specifications (related to technical drawing):

Es una zanja o foso de 3 mts de largo, revestido de cemento o ladrillo de barro cocido, el ancho es de 0.4 mts y su profundidad es tambien 0.4 mts . El foso o zanja esta dividido en 4 compartimentos o divisiones de 0.75 mts cada uno, el primero es para recepcionar las aguas grises provenientes de las actividades domesticas, el segundo esta lleno de piedrin, el tercero con arena y el ultimo con carbón activado, la pendiente de 2-3% permite la circulación de las aguas grises a través de los materiales filtrantes, el agua sale filtrada por una manguera de 2 pulgadas, la que al final del filtrado es usada para riego en jardineria o frutales.

Author:

Carlos Marín

Date:

20/03/2019

4.2 General information regarding the calculation of inputs and costs

Specify how costs and inputs were calculated:

• per Technology unit

If relevant, indicate exchange rate from USD to local currency (e.g. 1 USD = 79.9 Brazilian Real): 1 USD =:

33.3

4.3 Establishment activities

Comments:

Es una tecnología que puede construirse en cualquier época del año.

4.4 Costs and inputs needed for establishment

If you are unable to break down the costs in the table above, give an estimation of the total costs of establishing the Technology:

257.75

If land user bore less than 100% of costs, indicate who covered the remaining costs:

Programa de gestión comunitaria de la cuenca del rió Dipilto

Comments:

La tecnologia es barata porque el protagonista asume mucho del costo de mano de obra y materiales.

4.5 Maintenance/ recurrent activities

Comments:

Los materiales filtrantes son locales.

4.6 Costs and inputs needed for maintenance/ recurrent activities (per year)

If you are unable to break down the costs in the table above, give an estimation of the total costs of maintaining the Technology:

58.56

Comments:

El mantenimiento es barato por que lo asume el protagonista

4.7 Most important factors affecting the costs

Describe the most determinate factors affecting the costs:

Solamente el costo de transporte de los materiales desde el mercado hasta la finca/hogar

5.1 Climate

5.2 Topography

Indicate if the Technology is specifically applied in:

• not relevant

5.3 Soils

5.4 Water availability and quality

Is water salinity a problem?

Nee

Is flooding of the area occurring?

Nee

5.5 Biodiversity

5.6 Characteristics of land users applying the Technology

5.7 Average area of land used by land users applying the Technology

5.8 Land ownership, land use rights, and water use rights

Land ownership:

• individual, titled

Land use rights:

• individual

Water use rights:

• communal (organized)

Are land use rights based on a traditional legal system?

Ja

Specify:

Dueño de la propiedad segun titulo y/o escritura publica

5.9 Access to services and infrastructure

6.1 On-site impacts the Technology has shown

Socio-economic impacts

Water availability and quality

Socio-cultural impacts

Ecological impacts

Water cycle/ runoff

Soil

Biodiversity: vegetation, animals

6.2 Off-site impacts the Technology has shown

6.4 Cost-benefit analysis

How do the benefits compare with the establishment costs (from land users’ perspective)?

How do the benefits compare with the maintenance/ recurrent costs (from land users' perspective)?

6.5 Adoption of the Technology

• 11-50%

If available, quantify (no. of households and/ or area covered):

426

Of all those who have adopted the Technology, how many did so spontaneously, i.e. without receiving any material incentives/ payments?

• 0-10%

Comments:

Todos lo han hecho con el programa.

6.6 Adaptation

Has the Technology been modified recently to adapt to changing conditions?

Ja

other (specify):

De acuerdo a materiales disponibles

Specify adaptation of the Technology (design, material/ species, etc.):

La estructura se ha revestido de concreto, ladrillos de barro cosidos y bloques de cemento, si hay poco espacio se hace vertical sin perder las dimensiones y la posicion de los materiales filtrantes.

6.7 Strengths/ advantages/ opportunities of the Technology

6.8 Weaknesses/ disadvantages/ risks of the Technology and ways of overcoming them

7.1 Methods/ sources of information

7.2 References to available publications

Title, author, year, ISBN:

No aplica