The colours of criminal dumping

bangladesh pollution colours

I’ve been seeing red very often these days. It started early this year when The Guardian posted a picture of a bright red Jianhe River in Luoyang, China. The colour was caused by illegal wastewater discharges from chemical plants. Continue reading

Show some energy

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It has been known for a long time that there is energy in wastewater. Nearly any wastewater has an energy value of 13-15 kJ/g COD. The organic matter present in wastewater is theoretically sufficient to more than offset all the energy used in its treatment. Continue reading

Food waste – down the bin, drain or in the soil?

I have just discovered a new fact about America. Most American households do not throw their kitchen waste in the garbage bin; they throw it down their drains. An interesting contraption installed under the kitchen sink called the garbage disposal unit captures the food waste, shreds it into small pieces (less than 2mm) after which it passes into the plumbing. Continue reading