Automated trash collectors to be deployed in Hussainsagar The new systems deployed at the lake will be a combination of conveyors and fences, that work in tandem to remove the trash; HMDA invites tenders for five years Share Via Email | A+A A- To arrest the flow of suspended solid waste from four upstream nalas into Hussainsagar, the HMDA is preparing to set up automated trash collection systems. (Photo | EPS/S Senbagapandiyan) Express News Service HYDERABAD: To arrest the flow of suspended solid waste, primarily plastic waste, from four upstream nalas into Hussainsagar lake, the Hyderabad Metropolitan Development Authority (HMDA) is going to deploy automated trash collection systems at the mouth of four nalas and clear the lake of trash.At the mouth of the streams or nalas, one can find floating plastic, rubber, pet bottles, candy wrappers, slippers, rag material and other waste material.