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A conference center for about 10,000 visitors will be built near the city of Kingston, Jamaica (Old Harbour). Are there any collegues, which might be able to come up with design hints, tips, comments etc. I would be grateful to share opinions and to listen to advices. My background: I am a...

COD/TSS problems at effluent from fastfood WW treatment in Jamaica W.I. We have the following problem with one treatment plant: The customer is a fastfood restaurant, we treat about 5 m3/d of the combined kitchen and sewage WW after extensive grease/scum and primary treatment/removal in an...

bimr, why do you think its a lagoon system? Its a small TP behind a restaurant. Cheers munich

You guys have bauxite industry nearby? They will love to sell you caustic since it's their by-product, but don't use lime, please... 30" pipe? that's a large TP. Cheers munich

bimr, thanks again. Detention time is at the lower end, it's about 10 d, however we have very limited space, cost pressure etc. (site is in Savanna la Mar, Jamaica, near Negril). Well, with respect to your MLSS figure of 1,500 mg/L: this converts to an Imhoff volume of about 190 ml/L at an SVI...

bimr, thanks for your post. I will not try myself but I needed to know if we can trust one these firms here in Jamaica. Cheers munich

adrianviorel, thanks for your post, these are bad new, I hoped that bacteria etc. require water for their metabolism (osmotic pressure on membranes etc.). Since these oils contain lots of unsaturated fatty acids they require hydrogenation before being suitable for a blend with reg. diesel as...

Does anybody know if bacteria, viruses etc. survive in waste oil? The promlem is the following: We need reduce levels of oil, fat and grease to enter the grease trap of a fast food restaurant. By using a separating device such as a dipper we will be able to separate a good deal of these...

rbcoulter: thanks for your post, I will go there, MLSS increase makes sense a lot. Cheers munich

rbcoulter of the water treatment forum suggests increased MLSS. I like this. Thanks again for all replies. I am glad I found this site. Cheers munich

We treat effluent of a fast food restaurant in an activated sludge treatment plant. Our effluent is quite turbid, TSS levels around 50 mg/L and COD levels of the effluent are around 300 - 500 mg/L. COD inflow is around 1,500 mg/L. BOD5 levels are very low, around 1-3 mg/L. MLSS is about 200...

Does anybody know if bacteria, viruses etc. survive in waste oil? The promlem is the following: We need reduce levels of oil, fat and grease to enter the grease trap of a fast food restaurant. By using a separating device such as a dipper we will be able to separate a good deal of these...

JasonMoore Check the solubility of CO2 in water. If I remember right it's low. TerraSouth is perfectly right with his hint towards de-nitrification, however CO2 and its solubility may be the limiting factor. Cheers munich

TerraSouth, thanks for your message. I agree with what you say. The problem of the aeration tank is that it's too small thus detention time insuffucient. We have/had massive space problem with the location. Also cost matters played a role. Since the stand-by aerator is there already, we...

We treat effluent of a fast food restaurant in an activated sludge treatment plant. Our effluent is quite turbid, TSS levels around 50 mg/L and COD levels of the effluent are around 300 - 500 mg/L. COD inflow is around 1,500 mg/L. BOD5 levels are very low, around 1-3 mg/L. MLSS is about 200...