Cookie tracking notice
Are we allowed to crumble with cookies and anonymous tracking?

We use cookies on our website. Some of them are essential for the operation of the site (so called session cookies), while others help us to improve this site and the user experience (tracking cookies). We use the application Matomo and the external service etracker to analyze your behavior on our website anonymously. Because we value your privacy, we are here with asking your permission to use the following technologies. You can change your settings any time via this link or the menu item in footer menu. For more information visit our Data Policy

Investigating the potential of deep row entrenchment of pit latrine and waste water sludges for forestry and land rehabilitation purposes - WRC Project No. K5/1829

Still, D., Louton, B., Bakare, B., Taylor, C., Foxon, K., Lorentz, S. (2012)

Published in: 2012

Water Reserach Commission (WRC), South Africa

Still, D., Louton, B., Bakare, B., Taylor, C., Foxon, K., Lorentz, S.

Uploaded by:
SuSanA secretariat

Partner profile:
common upload


 Location of library entry

Content - Summary

This study investigated the application of the deep row entrenchment method under South African conditions with the aim of establishing whether the use of pit latrine and wastewater sludges as a fertilizer substitute for the agro-forestry sector can be recommended and thereby also establishing a safe and beneficial technique for the disposal of faecal and wastewater sludges.

The development of the deep row entrenchment method in the 1970s and subsequent studies were reviewed as were the South African guidelines for the utilisation of wastewater sludge. No guidelines currently exist for the classification or utilisation of pit latrine sludge. Pit latrine sludge was buried at different loading rates on a sandy site at a disused oxidation pond in Umlazi, south of Durban, and wastewater sludge from the Howick Wastewater Treatment Works was entrenched at a Sappi research site near Howick. The sites were characterised and monitored over time in order to document the movement of nutrients out of the trenches and changes in groundwater over time. The HYDRUS-2D was used to model the movement of soil-water, phosphorus and nitrate. The fate of pathogens over time was also investigated. Tree growth was monitored in order to document differences in growth rates between trees provided with different loading rates of sludge and control groups. Two smaller studies were also conducted to investigate the impact of sludge on tree growth under controlled conditions and the application of deep row entrenchment for on-site sludge disposal.

Bibliographic information

Still, D., Louton, B., Bakare, B., Taylor, C., Foxon, K., Lorentz, S. (2012). Investigating the potential of deep row entrenchment of pit latrine and waste water sludges for forestry and land rehabilitation purposes - WRC Project No. K5/1829. Water Reserach Commission (WRC), South Africa

Filter tags

English Faecal sludge treatment processes Faeces or faecal sludge Food security and productive sanitation (WG5) Groundwater protection (WG11) Sub-Saharan Africa


Investigating the potential of deep row entrenchment for sludge disposal - WRC 1829

Format: pdf file
Size: 8.81 MB

Share this page on    

Follow us on    

SuSanA Partners  currently 400 partners

Networks Circle


Latest SuSanA Blog Articles

SuSanA Blog »

SuSanA newsletter

Stay informed about the activities of SuSanA and its partners. The SuSanA newsletter is sent out around four times per year. It contains information about news, events, new partners, projects, discussions and publications of the SuSanA network.

Subscribe to newsletter »




Resources and publications

Our library has more than 3,000 publications, factsheets, presentations, drawings etc. from many different organisations. It continues to grow thanks to the contributions from our partners.

Add item to library »

The three links below take you to special groups of items in the library for more convenient access:


The project database contains nearly 400 sanitation projects of many different organizations dealing with research, implementation, advocacy, capacity development etc. Advanced filtering functions and a global map are also available. Information on how and why this database was created is here.

People working for SuSanA partners can add their own projects through their partner profile page. You might need your SuSanA login upgraded for this purpose. Please contact us if you would like to add a project.

Trainings, conference and events materials

Missed important conferences or courses? Catch up by using their materials for self study. These materials have been kindly provided by SuSanA partners.

Shit flow diagrams, excreta flow diagrams (310 SFDs worldwide)

Shit flow diagrams (SFDs) help to visualize excreta management in urban settings. Access SFDs and more through the SFD Portal.

Emersan eCompendium

Humanitarian Sanitation Hub

Sanitation Workers Knowledge and Learning Hub




Discussion forum

Share knowledge, exchange experiences, discuss challenges, make announcements, ask questions and more. Hint: Your discussion forum login is the same as your SuSanA login. More about the forum's philosophy »

Integrated content

We are hosting content from some other communities of practice and information-sharing portals. This section also provides a link to SuSanA's Sanitation Wikipedia initiative.

Suggest content to add »

SuSanA partners

Not yet a SuSanA partner? Show your organisation's support to SuSanA's vision and engage in  knowledge sharing by becoming partners.

Apply to become a partner »

Individual membership

Register as an individual member of SuSanA free of charge. As a member you can interact with thousands of sanitation enthusiasts on the discussion forum.  You can also get engaged in one of our 13 working groups and our regional chapters. Our FAQs explain the benefits further.

By getting a SuSanA login you can fully participate in the SuSanA community!

Register as a member


Forgot your password?
Forgot your username?