SELF-SUSTAINABLE ZERO INFLUENT AND ZERO DISCHARGE WASTE TO ENERGY SYSTEM AND METHOD FOR TREATING SUGAR INDUSTRY EFFLUENT AND DISTILLERY SPENT WASH

摘要

A self-sustainable zero influent and zero discharge waste to energy system and method for treating sugar factory effluent, press mud, and distillery spent wash, said system comprises: first Biomethanation and Anaerobic Digestion Module adapted to receive sugar factory effluent, press mud, and reverse osmosis reject water for obtaining biogas and organic digestate; second Biomethanation and Anaerobic Digestion Module adapted to receive distillery spent wash and liquid filtrate from Micro Strainer for obtaining biogas and dilute organic liquid effluent digestate; Biogas Cleanup Module for converting hazardous hydrogen sulphide in the biogas into elemental sulphur, and moisture-free Dry biogas; Biogas Engine Generator Module for producing electrical power, hot exhaust gas and hot water; Biogas Engine Exhaust Gas Waste Heat Recovery Module for producing Steam, and cooled exhaust gas for expulsion into atmosphere; Solid Fuel Module for producing solid fuel for a co-generation plant, liquid filtrate from Micro strainer for said second Biomethanation and Anaerobic Digestion Module; Hot condensate water from Solid Fuel Dryer returned in close loop to said Biogas Engine Exhaust Gas Waste Heat Recovery Module for producing steam; and Reverse Osmosis Waste Water Treatment Module for obtaining filtered effluent for reverse osmosis unit which outputs a first predefined portion of reverse osmosis, usable water and a second remainder predefined portion of reverse osmosis reject effluent as feed to first Biomethanation and Anaerobic Digestion Module.