The color can be detected by the consumer that if increased about 15 units a real color True Colour Units TCU and produces the color in the water due to the melting of organic materials such as Fulvic acids and Alheiomk melting metals such as iron, which causes the brown color of the water.
Hi Paul is your MBR a membrane bio reactor or a multiple step bioreactor. when it is the second choice use a tight ultrafiltration membrane which you operate with ambient pressure. The flow you can can expect is about 10 l/h m2 membrane. If it is the first the easiest is to use active carbon or a simple filtration through earth material like the nature does it. Then you need an additional filtration device.
Besides chlorination of the finished water which is likley to help with the color, another consideration is to decrease the pH of the water to around 6 or increase it to around 8.6 at which pH color-casuing compounds of various origin may precipitate or dissolve - try it in beakers first to see if pH adjustment will help with the color removal.
The effluent of which you speak is the representation of the liquid element of waste waters of a normal habitat. The color brown clearly shows that it contains corresponds to the diffuse pollution of waste waters. A part comes from the dissolved fecal matter by the micro organizations, a part comes from the urine (Urea, ammonia, nitrogenize, nitrate, mug up, phophate and other chemical components). Micro materials. For that he is necessary to add water to it (rinsing of the toilets, lava hands) and the water of the bar (sink, washing of glasses of the small Dishes) it is necessary to add to it the water of flow of the various devices (fridge, coffee machine, cooling agent, refrigerator). Dirty water coming from the cleaning of the ground and surface medical. Micro pollutant chemical what gives for this effluent a toxic concentration is very important: With not using so that it is. DANGER