Pilot Tests on the Treatment of Bath Wastewater by a Membrane Bioreactor

Abstract

In order to save water and reduce the cost of water in public areas, we studied the feasibility of recycling bath wastewater by a membrane bioreactor (MBR) at a college campus scale. The results showed that the treatment of bath wastewater by the MBR could achieve a chemical oxygen demand (COD) <50 mg/L with an average removal rate of 83%, a final NH3–N concentration of <10 mg/L with an average removal rate of 72%, and a turbidity of <0.5 ntu, with an average value of chromaticity of 26.4 tu. The treated water could meet or exceed the urban miscellaneous water standard of China (GB/T 18920-2002), and the processing cost is 1.70 CNY/m3 or 0.25 USD/m3, which is below the price of tap water. The results demonstrated both the economic benefit and the conservation of natural resources.

Microbial Electrochemical Systems and Membrane Bioreactor Technology for Wastewater Treatment

“…These particles adhere to the membrane surface and deposit in the membrane pores, clogging the pores and reducing membrane permeability [20,21]. Due to the heterogeneous nature of suspended solids and active microorganisms in mixed liquid suspended solids (MLSSs), membrane fouling is still an unsolved problem for MBR systems in the long term [16,22]. Moreover, MES is still subject to several significant limitations, Siti Mariam Daud 2 Zainura Zainon Noor 1,2, * Noor Sabrina Ahmad Mutamim 3 Nurul Huda Baharuddin 1 Azrul Nurfaiz Mohd Faizal 4 Azmi Aris 2 Rabialtu Sulihah Ibrahim 1 -1 such as low power output, membrane fouling, high cost, short lifetime, and limited energy efficiency.…”

Treatment of Wastewater from a Food and Beverage Industry Using Conventional Wastewater Treatment Integrated with Membrane Bioreactor System: A Pilot-Scale Case Study

“…In addition, the MBR system has to be capable of providing stable system operation, which may ease the industrial personnel system handling despite its capability to undergo a nitrification and denitrification process in the degradation of organic matter in a wastewater treatment system [ 14 ]. MBR is also flexible in terms of its suitability to be installed after undergoing an aerobic or anaerobic pre-treatment system in a wastewater treatment plant [ 15 , 16 ]. Other than producing a better quality of effluent and complied to standard of treated water, the wastewater treatment system generated less sludge production, which led to the significant reduction of sludge disposal cost [ 3 ].…”