Water Re-Use & Re-Cycling Training Course

Introduction

Continued population growth, contamination of both surface water and groundwater, uneven distributions of water resources and periodic droughts have forced water agencies to search for new sources of water supply. The use of highly treated wastewater effluent, now discharged to the environment from municipal wastewater treatment plants, is receiving more attention as a reliable water resource. In many parts of the world, water reuse is already an important element in water resource planning and implementation. While water reuse is a viable option, water conservation, efficient use of existing water supplies, and new water resources development and management are other alternatives that must be evaluated. The purpose of this course is to introduce the basic concepts and issues involved in water reclamation and reuse. Because water reuse is a rapidly evolving field, especially with respect to water quality, emerging issues are considered in the end of the course. Several topics will be covered during this course including definition of terms, public and environmental health considerations, risk assessment, principal treatment technologies used for water reclamation, storage of reclaimed water, irrigation water reuse, industrial water reuse, groundwater recharge and potable water reuse.

Objectives

• To introduce the technical terms used in water reuse practices.
• To present the role or water reclamation and reuse in the context of the hydrologic cycle.
• To discuss the principal water reuse applications.
• To evaluate the impact of new scientific findings and knowledge concerning the constituents in water.
• To examine the public health significance and environmental impact of the constituents in treated wastewater that to be reused.
• To review existing water reuse criteria and guidelines.
• To review some of the constituent removal technologies.
• To discuss selected treatment process flow diagrams used in water reclamation applications.
• To discuss problems involved with storage of reclaimed water and management strategies that can be used to overcome these problems.
• To provide understanding of the problems involved in the industrial water reuse.
• To discuss effective planning for water reclamation and reuse.

Training Methodology

This is an interactive course. There will be open question and answer sessions, regular group exercises and activities, videos, case studies and presentations on best practice. Participants will have the opportunity to share with the facilitator and other participants on what works well and not so well for them, as well as work on issues from their own organizations.

Who Should Attend?

Environmental Engineers, Civil Engineers, Agricultural Engineers, Industrial Engineers, Managers of the water sector, Managers of the agricultural sector, Managers of industries, operators of many industrial facilities.

Course Outline

Day 1: Wastewater reclamation and reuse an introduction

Definition of terms, The Role of Water Recycling in the Hydrologic

Cycle, Historical Perspective, Wastewater Reuse

Applications Need for Water Reuse.

Public health and environmental ISSUS in water reuse

Constituents in Reclaimed Water, Public Health Issues, Environmental

Issues, Water Reclamation Criteria, What level of

Treatment is Necessary?

Day 2: Introduction to risk assessment

Risk Assessment, Risk Management, Ecological Risk Assessment,

Risk Assessment for Water Reuse, Limitations in

Risk Assessment for Water Reuse.

Water reclamation technologies

Constituent Removal Technologies, Conventional Wastewater

Treatment Process Flow Diagram for Water Reclamation Advanced Wastewater Treatment Process Flow Diagrams, Performance Expectations for Water Reclamation Process, Treatment Process Reliability.

Day 3: Storage of reclaimed water

Needs for Storage, Meeting Water Quality Discharge Requirements, Operation of Storage Reservoirs, Problems Involved with Storage of Reclaimed Water, Management Strategies for Open and Enclosed Reservoirs.

Agricultural and landscape irrigation

Evaluation of Irrigation Water Quality, Other Problems.

Day 4: Industrial water reuse

Industrial Water Use, Cooling Tower Makeup Water, Water and Salt Balances in Cooling Tower Systems, Common Water

Quality Problems in Cooling Tower Systems.

Groundwater recharge with reclaimed water

Groundwater Recharge Methods, Pretreatment Requirements for Groundwater Recharge, Fate or Contaminants in Groundwater, Groundwater Recharge Guidelines.

Day 5: Planned indirect and direct potable water reuse

Planned Indirect Potable Water Reuse, Planned Direct Potable

Water Reuse, Planned Potable Water Reuse Criteria, What is the Ultimate Water Reuse Goal?

Planning for wastewater reclamation and reuse

Planning Basis, Market Assessment, Monetary Analyses, Other Planning Factors, Planning Report.

Epilogue on water reuse issues