Waste Water Treatment and Gaseous Emission Reduction

Garant předmětu:

Lecturer:

Tutor:

Supervisor:

Department of Process Engineering

Synopsis:

Waste water = WW pollution, amount of sewage, determination of pollution, self-purification of surface water, principles (processes) of waste water treatment, mechanical and biological treatment (aerobic and anaerobic), sludge management, examples of typical equipments and types of various waste water treatment plants = WWTP (mechanical + aerobic + anaerobic; mechanical + anaerobic + aerobic).

Renewable sources of energy, places of emissions origin, methods and equipments of emissions reduction. Mechanical waste gases cleaning (dust etc. separation) = dry and wet separators, filters, electro-filters. Processes and equipments for harmful gaseous substances collecting and treatment (SO2, volatile organic compounds ...).

Requirements:

Syllabus of lectures:

1.Ecological balance and impacts, hydrological balance, types of water and their characteristic, calculation of WW amount and its pollution.

2.Design of WWTP and sewage system, kinds of WW pollution, determination of WW pollution, recipient, self purification of surface water.

3.Principles of WW treatment. Mechanical ways of WWT - bar screens, screen filters, sand filters, sand traps, hydro-cyclones, vortex traps, slot settlers. Sedimentation of particles.

4.Types of settlers, lamella separator, grease and oil catchers. Data for their design.

5.Sludge management, sludge treatment and their mechanical dewatering. Biological WWT - microbial growth phases in WW, comparison of aerobic and anaerobic ways of WWT, WW clearing on roots.

6.Trickling filter, rotary biological contactors. Aerobic WWT (activation, activated sludge, types of activation tanks, types of activation and their parameters), WWTP monitoring and control. Ways of aeration.

7.Anaerobic WWT, anaerobic processes, agitated reactor, UASB reactor, sludge digester, anaerobic column with filling.

8.Examples of typical flow sheets of WWTP for sewage and WW from a sugar factory, other practical examples and experiences. Excursion to ÚČOV Trója.

9.Ecology and living environment, sources of emissions, methods of gas cleaning, properties of particles and other contaminants, principles of their separation.

10.Surface, kinetic, electric and transfer properties of particles. Types of separators, evaluation of separators. Dry separators.

11.Cyclones and their design, wet separators, filters, el. separators. Principles of volatile organic compounds disposal.

12.Separation of volatile organic compounds, procedure of selection of proper technology. Principles of desulphurization.

13.Dry, wet-dry and wet flue gas desulphurization, regenerative heat exchangers, temperature regime of the process.

14.Regenerative methods of desulphurization. Examples of various ways and practical experiences.

Syllabus of tutorials:

1.Ecological balances

2.Design of cesspool, septic tank, sand filter and irrigation tubes.

3.Sludge and sand sedimentation. Design of air-lift pump.

4.Design of WWTP - calculation of WW amount and its pollution.

5.Design of WWTP - trickling filter, rotary biological contactor and activation. Effect of WW on recipient.

6.Desulphurization - wet-dry method (balance and design), desulphurization - wet method (balance and design).

7.Final test

Study Objective:

Knowledge of following branches:

Waste water = WW pollution, amount of sewage, determination of pollution, self-purification of surface water, principles (processes) of waste water treatment, mechanical and biological treatment (aerobic and anaerobic), sludge management, examples of typical equipments and types of various waste water treatment plants = WWTP (mechanical + aerobic + anaerobic; mechanical + anaerobic + aerobic).

Renewable sources of energy, places of emissions origin, methods and equipments of emissions reduction. Mechanical waste gases cleaning (dust etc. separation) = dry and wet separators, filters, electro-filters. Processes and equipments for harmful gaseous substances collecting and treatment (SO2, volatile organic compounds ...).

Study materials:

Hoffman P., Novák V.: Zpracování exhalací a odpadů. ČVUT, Gray N. F.: Water technology. Elsevier 2005, Reynolds T. D., Richards P. A.: Unit operations and processes in environmental engineering., PWS Publishing company, 1996, Hocking M.B.: Chemical technology and pollution control, Elsevier 2005, CD Rom with lectures and exercises

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans: