What process is used to treat kitchen waste water to meet secondary discharge standards?
Thread Content
There is currently a centralized treatment facility that collects waste water from hotels and restaurants; this water needs to be treated to meet secondary discharge standards. Do you have any proven treatment methods? Thanks!
I would like to ask, LZ, what kind of meals do you usually cook at home? Only then can you know what to do with the kitchen waste from your home!
Domestic water contains a high amount of organic matter and oil; therefore, oil separation tanks and biological treatment processes are necessary to ensure proper treatment. Currently, the MBR method is relatively simple and requires less space for domestic wastewater treatment. However, no matter which treatment process is chosen, it is important to know the volume of water that needs to be treated
Physical treatment methods cannot meet the second-level standards; due to the high COD level and large amount of oil in swill, an oil separator is used first, followed by contact oxidation, which makes it possible to meet the second-level standards.
Thank you! ! Firstly, sedimentation for oil removal is necessary. The water quality parameters are roughly COD 7000 and BOD 4000; aerobic treatment alone may not be sufficient. The current plan is to use ABR combined with three-stage contact oxidation, and if that doesn’t work, the third stage can be replaced with MBR, which should resolve the issue. Are there any experts in ABR? Please provide some design parameters, thanks! !
The water volume is 120 m3/d, with a maximum hourly flow rate of 15 m3/h. I looked up information on MBR membranes and found that their pore sizes range from 0.1 to 0.4 microns, while their flux ranges from 125 to 250 l/m2·d – there is quite a difference between these values. Are there anyone with experience in working with MBR membranes? Could you provide the technical specifications for MBR membranes from a few different manufacturers? !