Water Reuse

DWA is active

Water scarcity depends on population growth, climate changes, and urbanization. The reuse of treated wastewater is a contribution to the management of limited resources in developing as well as in industrialized countries in the fields of agriculture, urban development, industry, hotels and transport.

Since 2005, the DWA working group BIZ 11.4 “water reuse” with its interdisciplinary experts deals with the improvement of frame conditions for project implementation in the field of design and training capacities.

Spokesman 2005 – 2008: Hans Huber, Berching
Spokesman 2009 – 2014: Prof. Peter Cornel, Darmstadt
Spokesman since 2015: Prof. Jens Haberkamp, Münster

Brochures

DWA-Topics - Non-Potable Water Reuse - Development, Technologies and International Framework for Agricultural, Urban and Industrial Uses - June 2019

DWA Topics: Non-Potable Water Reuse – Development, Technologies and International Framework Conditions for Agricultural, Urban and Industrial Uses” focuses on reuse of reclaimed water produced from municipal wastewater by centralized or decentralized treatment facilities. This report is intended to provide general guidance for water utilities, consulting engineers and regulatory agencies for planning and expanding non-potable water reuse as an alternative freshwater supply, in particular for agricultural irrigation, urban landscape irrigation and other urban uses, and industrial practices. The report provides an overview regarding relevant regulations and guidelines of water reuse, continues to describe the various aspects of risk management involved in water reuse, and also highlights the various technologies that are applied for water reuse. It does not provide numerical recommendations, which must be derived from site and country specific conditions and assessments. The report is structured into ten chapters, covering the relevance of water reuse, regulations and compliance, development of water reuse projects, health risk management, socio-cultural aspects and public perception, ecological and agricultural aspects, energy requirements, economics, as well as an assessment matrix regarding various treatment processes. An additional compilation of case studies provides valuable experiences.

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Guideline DWA-M 512-1E - Sealing Systems in Hydraulic Engineering, Part 1: Earthwork Structures - February 2012; check 2016 approved by experts

It covers surface and internal sealing systems for soil structures in hydraulic engineering as they are applied in practice. Described are surface and internal sealing systems used in earthwork structures, including asphalt and concrete sealing systems, geosynthetic clay liners, mineral sealings, geomembranes, fully grouted riprap, sheet pile walls and internal sealing systems made of hydraulically bound sealing-wall materials (concrete, plastic concrete, injections, jet grouting, diaphragm walls, thin slurry diaphragm walls, soil-grouting processes). For each of these sealing systems, a summary is given of possible applications, construction materials, methods of placement, design principles, quality assurance and maintenance requirements, and reference is made to the latest developments and their applications.

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Part of the DWA topics Non-Potable Water Reuse is a matrix of commonly used processes of wastewater treatment, which has been elaborated in order to support the selection of the most suitable treatment techniques for several reuse purposes. Each process step was assessed with regard to various aspects such as discharge quality, costs, consumption of material and energy, expenses for maintenance etc..

The assessment matrix considers the following treatment steps for water reuse:

Mechanical treatment (screening, filtration)
Ponds, storage and treatment tanks
UASB, ABR, activated sludge process, trickling filter, helophyte treatment plants
Downstream filtration/precipitation/flocculation, membrane technology
Disinfection

The assessment matrix is available as Excel file for the readers of the report HERE

The former version [2008] of the assessment matrix is still available in German, French, Spanish, Arabic, Chinese and Farsi on personal request.

Contact: knitschky@dwa.de

Training material for water reuse

„DWA guidance for the practical implementation of water reuse” cover theory and in-practice solutions of water reuse in their interdisciplinary context with 500 slides including four elaborated case studies.

Importance of water reuse
Regulation and standards
Planning and implementation and operation of water reuse projects (project manager, water reuse projects, requirements, organisation, quality assurance)
Acceptance (target groups, strategies, lessons learnt)
Energy (potential, emissions, climate impact)
Hygiene (pathogens, disinfection)
Ecology and agriculture (water balance, climate, irrigation)
Economic aspects( costs, financing, case studies)
Case studies from Tunisia, Bahrain, Jordan and Germany

For exchange of training and teaching material on water reuse please contact the DWA headquarters.
Contact: knitschky@dwa.de

Seminar "water reuse - overview for practitioners and case studies"

DWA can offer a whole training package “water reuse” according to your needs. The 2-day seminars “water reuse - overview for practitioners and case studies” and further field trip trainings in Germany.

Ask for your inhouse training in Germany, abroad or web-based:
Contact: international@dwa.de