Industrial wastewaters

NAME OF THE COURSE Industrial wastewaters



Year of study


Course teacher

Prof Nediljka Vukojević Medvidović

Credits (ECTS)


Associate teachers

Type of instruction (number of hours)






Status of the course


Percentage of application of e-learning

0 %


Course objectives

Students get to know the source and types of wastewaters, the indicators of their pollution, wastewater treatments and the methods of wastewater sludge disposal.

Course enrolment requirements and entry competences required for the course


Learning outcomes expected at the level of the course (4 to 10 learning outcomes)

It is expected that the outcome of learning to provide knowledge about:
- wastewater treatment and relationship with sustainable development
- sources and types of waste water and their characteristics
- processes of the preliminary, first, second and third phase of wastewater treatment
- selection of processes of wastewater treatment based on wastewater characteristics and composition
- biogas production and its useful application
- disposal of sludge remain after treatment of wastewater from different industries
- natural wastewater treatment systems
- legislation related to wastewater treatment

Course content broken down in detail by weekly class schedule (syllabus)

1st week: Water importance for human. Water use. Water distribution on the Earth. Hydrological cycle. Importance of hydrological cycle on recovery of water source. Seminar with examples of purification of waste water from different industries is given to students.
2nd week: Fresh water supply on Earth. The impact of anthropogenic activities on the hydrological cycle. Water and sustainable development. Contamination and pollution of natural water.
3rd week: Wastewater pollution indicators. Point and nonpoint source of pollution.
4th week: Urban wastewater. Industrial wastewater. (I written evaluation)
5th week: Cooling wastewater. Rainfall wastewater. Leachate wastewater from landfill. Calculation of the wastewater loading with harmful substances expressed as population equivalent (PE)
6th week: Physical, chemical and biological process of autopurfication. Disorders of aquatic ecosystems. Eutrophication.
7th week: Wastewater treatment. Preliminary and first phase of wastewater treatment
8th week: Second phase of biological wastewater treatment. Aerobic processes. (II written evaluation)
9th week: Performance of aerobic process. Anaerobic processes. Third phase of wastewater treatment. Natural wastewater treatment systems.
10th week: Treatment and disposal of sludge.
11th week: Seminar- Legislation related to wastewater treatment: Water Act (NN 153/09, 130/11, 56/13), Regulation on water classification (NN 77/98 i 137/08), State water protection plan (NN 08/99), Regulation on hazardous substances in water (NN 78/98 i 137/08) Regulation on limit values and other hazardous substances in water (NN 40/99, 94/08), Regulation on limited values of emission in wastewater (80/13). (III written evaluation)
12th week: Seminar: Technological solution of wastewater treatment from different industries (beer production, production and processing of meat and meat products, fish processing and dairy industry)
13th week: Seminar: Technological solution of wastewater treatment from different industries (pulp and paper industries, textile industries, chemical industries)
14th week: Seminar: Technological solution of urban wastewater treatment from different cities such as Zagreb, Split and Zadar
15th week: Seminar: Oral presentation of student seminars (IV oral evaluation)
Exercise 1-Determination of basic physical and physical-chemical parameters in wastewater samples.
Exercise 2-Determination of chemical oxygen demand (COD) using dichromate method.
Exercise 3-Determination of biochemical oxygen demand (BOD) using Winkler method.
Exercise 4-Treatment and removal of dissolved substance of heavy metals - zinc ions removal from wastewater by neutralization and precipitation.
Exercise 5-Effect of adding demulsifies and dewatering agent on separation of phase from oily wastewater.
Exercise 6-Characterisation of bioactive sludge: sedimentation of active sludge in Imhofe and determination of mixed liquor suspended solids (MLSS) of active sludge
Fieldtrips for visiting of wastewater treatment plants.

Format of instruction:

Student responsibilities

Attending lectures is 80%, while seminars, laboratory exercises and field work 100% of the total hours.

Screening student work (name the proportion of ECTS credits for eachactivity so that the total number of ECTS credits is equal to the ECTS value of the course):

Class attendance




Practical training


Experimental work








Seminar essay






Oral exam




Written exam






Grading and evaluating student work in class and at the final exam

Every laboratory exercises include oral exam before exercise and writing of final report. The entire exam can be applied over the three written evaluation and one oral evaluation of seminar during the semester. Passing threshold is 60%. Students who have not passed evaluation during the semester should attend at the final exam in the regular examination period. Final exam will include written and oral exam. Passing threshold is also 60%. Rating: 60% -70% - satisfactory, 70% -80% - good, 80% -90% very good, 90% -100% - excellent.

Required literature (available in the library and via other media)


Number of copies in the library

Availability via other media

D. Hendricks, Water treatment unit processes, Taylor and Francis Group, Boca Raton, 2006.


Metcalf & Eddy, Wastewater Engineering, Irwin McGraw-Hill, New York, 1991


B. Tušar, Pročišćavanje otpadne vode, Kigen d.o.o. i Geotehnički fakultet Sveučilišta u Zagrebu, Zagreb, 2009.


B. Tušar, Ispuštanje i pročišćavanje otpadne vode, Croatiaknjiga, Zagreb, 2004.


S. Tedeschi, Zaštita voda, HDGI, Zagreb, 1997.


J. Margeta: Oborinske i otpadne vode: teret onečišćenja i mjere zaštite; Sveučilište u Splitu, Građevinsko-arhitektonski fakultet, Split, 2007.


J. Perić, N. Vukojević Medvidović, I. Nuić, Inženjerstvo otpadnih voda, Priručnik za laboratorijske vježbe, Kemijsko tehnološki fakultet Sveučilišta u Splitu, lipanj 2012. (



Znanstveni i stručni radovi iz područja obrade otpadnih voda


Optional literature (at the time of submission of study programme proposal)

R.T. Wright and B.J. Nebel, Environmental Science, 9th edition, Prentice Hall Inc, New Jersey, 2004.
L.D. Benefield, et al., Process Chemistry for Water and Wastewater Treatment, Prentice-Hall Inc., Englewood Cliffs, New Jersey, 1982.

Quality assurance methods that ensure the acquisition of exit competences

- monitoring of students suggestions and reactions during semester
- students evaluation organized by University

Other (as the proposer wishes to add)