Industrial Waste Treatment Plant
1 Introduction
2. Process’s
3. Effluent Water Sample Results
4. Future Development’s
5. Conclusion
6. Appendix
Mitchell Gaze M.Phys – Director
M. Gaze & Co Ltd, Crossways Farm, Thurlton, Norwich, Norfolk, NR14 6NZ.
1. Introduction
The industrial waste treatment plants process’s aims to achieve, recovery and
treatment of a wide range of waste stream’s
using the machanincs of clarifers and grading trummels and screening too separte soild
and luid comapnts from mixed liquid and solid waste streams and the subsequent tremant
of the comonents too an inert level
solids non bioderagle waste is cleaned and recycling using washing trummes and sand
orags
. Our control strategy is to maintain certain levels of biomass and dissolved oxygen
in the aeration tank by manipulating waste sludge flow, return sludge flow and aeration
capacity. Such strategies are based on measurements of the concentrations of mixed
liquor suspended solids and dissolved oxygen.
The respiration rate of activated sludge is an essential part of our control, since it is an
essential variable in the activated sludge process and provides information on activity and
concentration of the biomass, influent waste concentration, toxicity and concentration of
biodegradable matter in the effluent. Therefore these effects have been used to
manipulate the respiration rate by control systems. This is due to adequate measurement
techniques and partly to a high level of respiratory-based control.
In order for this to be achieved and controllable a DAF plant is necessary on the feed to
reduce influent solids to a minimum for COD/BOD reduction and enable control of
biomass mass levels and age.
An important part of this control of this biomass, is its temperature, as a high
temperature adversity affects activated sludge settle ability. This is controlled you a heat
exchange and large local reservoir acting as heat sink, too reduce the overall
temperature of the activated sludge.
Any ‘carry over’ of biological solids from the activated sludge plant are removed using a
sand filter, with an automated wash back too clear sand period ally.
As a final polishing treatment the effluent water is introduce in the a circulating reed bed
system and aerated lined reservoir of 25,000 tonnes. This treats the waste water by
allowing it to flows through stones or gravel in an artificially created wetland containing
the reed Phragmites Australis.
2. Process
2.1 Tanker Discharge and mechanical waste treatment and grading
2.2 Silt and sand recovery and treatment via compositing
2.3 High Soluble COD removal Via precipitation, heat and Daf
2.4 High Soluble COD removal Via precipitation, heat and decanter
2.5 Oil/water treatment and separation and recovery
2.6 Removal of Solids from inert or low COD waste streams
2.7 Shredding of waste and containers
2.8 Rag…metal and Plastic cleaning and recycling
2.9 Site plan and over all drainage flow of waste stream