BEST PRACTICE IN SEWAGE AND EFFLUENT TREATMENT TECHNOLOGIES 

Introduction:

The quality of groundwater used cannot be compromised any longer and the servicing requirements of on-site sewage disposal systems cannot be ignored. With limited funds available to you, the private owner or regulatory agency who is responsible for inspection, the task of on-site sewage treatment and disposal is becoming very difficult.

With limited funds available to the owners we believe this workshop will help you to install an effective system. You will learn numerous tips and tricks throughout the workshop to make it very practical and relevant to your applications.

PROGRAMME OUTLINE 

PLANNING CONSIDERATIONS – PROVINCIAL AND NATIONAL GOVERNMENT 

Economic, social and environmental goals of planning Environmental assessment
Need for health and safety
Factors in preparing municipal plans

Protection for stepped up demand

WASTE WATER FUNDAMENTALS 

Basic terminology
Contaminant considerations
Biological, phosphorous, ammonia
Pathogens
Effluent objectives
Alternate discharge options
Receiving water capacity-provincial water quality objectives Surface discharge
Subsurface discharge

DESIGN CONSIDERATIONS 

Collection of sewage
Aerobic and anaerobic treatments
Critical design parameters for communal sewage treatment systems

TREATMENT TECHNOLOGIES 

Suspended solids removal BOD removal
Nitrification and denitrification Phosphorous reduction

TREATMENT SYSTEMS 

Conventional septic tank
As the treatment system Enhanced septic tanks
As a primary for other bioreactors Bioreactors

Fixed film
Rotating
Suspended
Batch
Filters-sand, peat, stone, synthetics
New technologies targeting specific contaminants

RECIRCULATING SAND FILTERS YEAR ROUND TREATMENT 

History experimental design Construction
Operation

SUBSURFACE DISCHARGE 

Filter bed
Shallow trench Leaching bed “Constructed wetland” Recycle, reuse

DIRECT DISCHARGE 

Stream assimilative capacity Mixing zone
Disinfection

BIOSOLIDS DISPOSAL 

Hauled waste Compost
Lime stabilisation

MANAGEMENT OF COMMUNAL WASTE WATER SYSTEMS 

Regular monitoring
Long term satisfactory performance

FINANCIAL AND LEGAL ISSUES 

Funding sources
Approval process Regulatory compliance Municipal and owner liability

DESIGN AND INSTALLATION OF YOUR OWN SYSTEM 

Simple design rules
Implementation of your system
Tips and tricks
The thirteen golden rules of working with waste water systems