Attingal municipality set to upgrade waste treatment facility

By Times Of India on 26 Oct 2017 | read
THIRUVANANTHAPURAM: Attingal municipality - which is one of the very few civic bodies to have a well-managed centralised waste treatment facility - is set to upgrade its system. The municipality will install an organic waste converter (OWC) at its centralised treatment facility to ensure hassle-free waste management, especially waste collected from hotels and fish markets.

OWC will have a capacity to process 5 tonnes of waste a day and will be equipped with 18.8HP motor. At present, the waste treatment plant processes 16 tonnes a day which is collected from 31 wards in the municipality.

Three types of waste management namely windrow composting, vermin-composting and biomethanation are being followed at the treatment plant. The municipality is going for an additional OWC to deal with challenges arising from the increasing quantity of waste

"We use biomethanation to process hotel waste, however during some days we are unable to handle the waste due to its quantity. Besides, we have had certain technical glitches recently that led to leakage and we decided to have an additional facility," said T Alexander, health supervisor, Attingal municipality.

Officials said that they were taking a step ahead considering the bitter experiences of other civic bodies. "The moment something goes wrong, people come up and raise their voice and protest. We want to avert that situation and are upgrading our facilities so that we don't have to deal with leakage or odour," he said.

OWC is a biomechanical compost unit which comprises a shredder, pulveriser and converter where waste is processed into dry powder within a few days. The waste is sliced, ground and converted into compost. The municipality is also set to launch an effluent treatment plant (ETP) at Alamcode fish market to process waste water.

At ETP, the effluent is moved through the screen unit to remove the floating solids and the rest is collected in equalisation tank. The effluent is then led to anaerobic digester. The digested wastewater is then led to the aeration tank where the water is aerated by diffused aeration system and is directed to secondary clarifier where settling and separation takes place. ETP was recently set up at Kazhakkoottam market by Kerala coastal area development corporation.