Title Navodnjavanje bosiljka i graha RO retentatom Title (english) Irrigation of basil and beans with RO retentate Author Fran Hrlić Mentor Davor Dolar (mentor)Committee member Davor Dolar (predsjednik povjerenstva)Committee member Danijela Ašperger (član povjerenstva)Committee member Vilko Mandić (član povjerenstva)Granter University of Zagreb Defense date and country 2024-07-12, Croatia Scientific / art field, TECHNICAL SCIENCES Abstract Otpadne vode iz tekstilne industrije predstavljaju veliku opasnost za okoliš te su u pravilu zagađene širokim spektrom tvari čije uklanjanje nije jednostavno. Cilj ovog rada bio je simulirati postrojenje za obradu tekstilnih otpadnih voda (TOV) koristeći hibridni ultrafiltracijsko (UF) – reverzno osmotski (RO) proces, ali s naglaskom na zatvaranje vodenog kruga, odnosno da se sve struje iz membranskog procesa oporabe ili koriste za određene svrhe. Realni uzorci TOV-a prvo su podvrgnuti ultrafiltraciji te je skupljan permeat. Taj permeat je potom obrađivan reverznom osmozom te je retentat korišten za navodnjavanje biljaka bosiljka i graha. Rezultati pokazuju da je UF, kao prva membranska operacija, uspješno smanjila vrijednosti mutnoće, kemijske potrošnje kisika te spektralnog apsorpcijskog koeficijenta. S druge strane, RO je neophodna membranska operacija ukoliko se želi značajno smanjiti vrijednost električne vodljivosti te koncentracija raznih iona u obrađivanim vodama. Analiziranjem voda, biljnog materijala i tla, zaključuje se da su RO retentati te RO retentati razrijeđeni s vodovodnom vodom u omjeru 50:50 sigurni za razvoj biljaka u pogledu koncentracija klorida, nitrata, amonijevih kationa, sulfata, željeza i mangana te pH vrijednosti. U biljkama navodnjavanim TOV-om uočene su veće koncentracije dušika, fosfora i kalija u odnosu na iste biljke navodnjavane vodovodnom vodom, no primjenom razrijeđenih RO retentata u biljkama je utvrđena slična koncentracija navedenih tvari kao u biljkama navodnjavanih vodovodnom vodom. U tlu navodnjavanom TOV-om uočene su značajno veće koncentracije sumpora i fosfora u odnosu na tlo navodnjavano vodovodnom vodom. Primjenom razrijeđenih i nerazrijeđenih RO retentata vrijednosti koncentracija navedenih elemenata niže su nego kod uzorka tla navodnjavanog TOV-om.
Abstract (english) Textile wastewater (TWW) poses a major threat to the environment and is usually contaminated with a variety of substances that are difficult to remove. The aim of this work was to simulate a textile wastewater treatment plant using a hybrid ultrafiltration (UF) – reverse osmosis (RO) process, with the primary objective of closing the water cycle so that all process streams from the membrane process can be reused or utilised for other purposes. Real samples of TWW were first treated with the UF process and the UF permeate was collected. This permeate was then treated with the RO and the RO retentate was collected as it was used as irrigation water for basil and beans. The results show that UF was the first membrane operation to successfully reduce the values for turbidity, chemical oxygen demand, and spectral apsorption coefficient. On the other hand, RO is the necessary membrane operation when it comes to significantly reducing the values of electrical conductivity and the concentration of various ions in the treated water. Analysis of the water, plant material and soil showed that all RO retentates and all RO retentates diluted 50:50 with tap water were harmless to plant development in terms of chloride, nitrate, ammonia, sulphate, iron, and manganese concentrations and pH. Plants irrigated with TWW were found to have higher concentrations of nitrogen, phosphorus and potassium than plants irrigated with tap water, but when diluted RO retentates were used, these plants had similar concentrations of these substances to the plants irrigated with tap water. In the soil irrigated with TWW, sulphur and phosphorus concentrations were found to be much higher than in the soil irrigated with tap water. When using diluted and undiluted RO retentates, the concentration values of the mentioned elements were lower compared to the soil samples irrigated with TWW.
Keywords
tekstilna otpadna voda
ultrafiltracija
reverzna osmoza
oporaba
navodnjavanje
Keywords (english)
textile wastewater
ultrafiltration
reverse osmosis
reuse
irrigation
Language croatian URN:NBN urn:nbn:hr:149:405906 Project Number: MYP-G6087 Study programme Title: Applied Chemistry - Graduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry Type of resource Text File origin Born digital Access conditions Embargoed access Terms of use Created on 2024-07-15 14:08:28
