Clean Technology (PB386) Click to edit Master title style Numfon Eaktasang, Ph.D. numfon.e@fph.tu.ac.th numfoneak@hotmail.com

Principle of Clean Technology Cleaner Technology Reuse/Recycle Source Reduction Product Change Process Change Reuse Recycle Raw Material Change Technology Improvement Operational Management Before After

Waste Reduction at Source Final change or intermediate products change To reduce waste generation and environmental load Ecolabelling Product design Life cycle assessment (LCA) Product Change

Waste Reduction at Source Process Change Raw Material Change Technology Improvement Operational Management

Waste Reduction at Source Input material changes Material substitution Replace toxic chemical by non-toxic chemical Increasing material cost but saving in waste treatment and disposal cost Raw Material Change

Waste Reduction at Source Redesign production system, using automatic machine Quality checking/maintenance Improving chemical synthesis such using more selective catalyst to reduce by-product formation Improving process control Redesign or reconfiguring process to improve heat recovery Improving the selectivity of separation processes Technology Improvement

Waste Reduction at Source Good operating practice Preventing unnecessary releases and merges into on-site recycling Operational Management

Reuse and Recycle On-site reuse Off-site reuse Material recovery Energy recovery Recycle Waste New product

Reuse and Recycle Energy recovery

Process of Clean Technology Planning and Organization Pre-Assessment Detail Assessment Feasibility Study Implementation and Evaluation

Process of Clean Technology CT working team Goal and objective setting 1. Planning and Organization

Process of Clean Technology Scope of the study Manufacturing process inspection Identify pollution sources Mass balance (input-process-output) Waste Evaluation Economic evaluation (cost-benefit analysis) Environmental impact assessment Priority setting 2. Pre-Assessment

Process of Clean Technology Identify source of pollution or energy loss Mass balance: energy balance, water balance, material balance Analysis and find the solutions Not effect on production process and quality of product Clean technology options 3. Detail Assessment

Process of Clean Technology Choose appropriate option Feasibility study in terms of 3Es (Engineering, Economic, Environment) 4. Feasibility Study

Process of Clean Technology Tool, equipment Experience Area Product Quality Safety Maintenance Interrupt the normal production process Engineering

Process of Clean Technology Investment cost Machine Under improvement/ stop production Maintenance Etc. Saving cost Material cost saving Energy cost saving Treatment cost saving By-product Etc. Economic

Process of Clean Technology Reduce environment impact Pollution prevention Waste reduction Environment

Process of Clean Technology To action must include a detailed work plan Target area, Timing and responsibilities Monitoring and evaluation to ensure that the practice is based on work plan If any there will be further revised. 5. Implementation and Evaluation

Project Implementation CT team Policy Goal Objective Technical team Data report & assessment Identified option Evaluation Next plan Supporting information Process information - Supervisor Process engineer Environmental engineer

Sugar Production Process Boiling and Evaporation Thickener Sugar crystal Dark brown sugar Sugar cane Sugar cane Juice Washing

Boiling and evaporation Mass Balance Sugar cane Sugar cane juice Thickener Boiling and evaporation Crystal Washing Dark brown sugar 100 tons Hot water 33 tons Calcium oxide 0.08 ton Flocculants 0.01 ton Bagasse 28 tons Steam 78.65 tons Steam 10.21 tons Filter cake 2.86 tons Molasses 8.86 tons 10.34 tons Hot water 0.19 tons Hot water 5.64 tons 105 tons 102.23 tons 23.58 tons 19.01 tons 10.34 tons

Mass Balance Material balance Energy balance Water balance

Assignment 2 Study the manufacturing process of pulp and paper Drawing production flow chart by using mass balance concept Deadline: 21th September 2017

Thank You !