The use of moving bed bio-reactor to laundry wastewater treatment

Abstract

Abstract. Large laboratory scale biological treatment test of industrial real wastewater, generated in industrial big laundry, has been conducted in the period of May 2016-August 2016. The research aimed at selection of laundry wastewater treatment technology included tests of two-stage Moving Bed Bio Reactor (MBBR), with two reactors filled with carriers Kaldnes K5 (specific area -800 m 2 /m 3 ), have been realized in aerobic condition. Operating on site, in the laundry, reactors have been fed real wastewater from laundry retention tank. To the laundry wastewater, contained mainly surfactants and impurities originating from washed fabrics, a solution of urea to supplement nitrogen content and a solution of acid to correct pH have been added. Daily flow of raw wastewater Qd was equal to 0.6-0.8 m 3 /d. The values of determined wastewater quality indicators showed that substantial decrease of pollutants content have been reached: BOD5 by 94.7-98.1%, COD by 86.9-93.5%, the sum of anionic and nonionic surfactants by 98.7-99.8%. The quality of the purified wastewater, after star-up period, meets the legal requirements regarding the standards for wastewater discharged to the environment.

Spent Coffee as a Composite Filler for Wastewater Treatment

“…The moving bed technology is not only limited to urban wastewater treatment. It can be successfully used to treat hospital wastewater, which is a major source of pharmaceuticals, in the industry to remove benzotriazoles and benzothiazoles, to purify industrial laundry wastewater, which mainly contains surfactants, to treat wastewater from the pulp and paper industry, which is characterized by high COD, BOD, and the presence of toxic chemicals, as well as in household treatment plants [ 13 , 17 , 18 , 19 , 20 ].…”

Anaerobic Reactor Filling for Phosphorus Removal by Metal Dissolution Method

“…This type of improvement usually allows for more efficient adaptation of reactors and faster achievement of the target technological performance [ 29 ]. The ecological effect of deploying AF is also associated with the reduction in secondary pollution of wastewater with chemical compounds that are used in the chemical precipitation of phosphorus with inorganic coagulants or polyelectrolytes [ 30 ]. Modified fillings can be produced from waste materials, which is in line with the assumptions of a circular economy [ 31 ].…”

Hybrid System Coupling Moving Bed Bioreactor with UV/O3 Oxidation and Membrane Separation Units for Treatment of Industrial Laundry Wastewater

“…Another attempt was based on the utilization of biological technologies such as membrane bioreactors (MBR) [1,[12][13][14], sequencing batch reactors (SBR) [4], or moving bed bioreactors (MBBR) [15][16][17]. MBR and MBBR technologies were found to be effective in the treatment of wastewater containing detergents both when applied as a stand-alone process or as the first stage before laundry water renewal processes [1,[18][19][20].…”

“…MBR and MBBR technologies were found to be effective in the treatment of wastewater containing detergents both when applied as a stand-alone process or as the first stage before laundry water renewal processes [1,[18][19][20]. It was found that the laundry wastewater treated in MBBR met the quality standards required by law for wastewater discharged to surface waters [16,17]. Furthermore, it was reported that the MBR effluent could be directly reused as a process water, although only when low or medium water quality is required [1].…”

“…One solution for the fouling problem could be application of advanced oxidation processes (AOPs), such as photo-Fenton, H 2 O 2 oxidation, TiO 2 photocatalysis, or combined UV/O 3 and UV/TiO 2 /O 3 systems [18,23]. Several researchers confirmed a positive influence of applying various AOPs on membrane fouling mitigation [17,[23][24][25][26][27][28][29][30][31].…”