slaughterhouse offal and animal mortalities. Pre-processing and equipment of each company varies as the feedstock changes. 2.3.2 Separation Separation is mainly for ensuring whether all feedstock is biodegradable and clean organic material. Non-biodegradable material take space and have a negative impact on HRT and size of the reactor. Separation process for food waste usually contains three main steps: Separation in home, restaurant or food industry Food Separation: Manual Sorting : Remove inorganic material like rock and metal Mechanical Sorters : Screens, Rotating Trommels, magnetic separation. 2.3.3 Hygienisation: Hygienisation is used for feedstock which contaminated in some form or contain pathogens or infectious material. Many companies this part don’t consider because pathogens is considered to be destroyed with simple mesosphilic 32C digestion. 2.3.4 Mechanical hydrolysis: Thermal pre-treatment (incineration) of MSW and Mechanical Biological pretreatment of waste are the most common methods in use for the pretreatment of municipal solid waste. Thermal pre-treatment of waste involves the controlled burning of waste, with or without energy recovery. This method of waste pre-treatment has increasingly been in use over the past few years mainly to reduce the amount of waste and to decrease their biological activity. However, this method of waste pre-treatment entails a much higher cost; longer pay back periods due to high capital investment and although, modern incinerators do comply with existing emission regulations, the public are still concerned with the adverse effects associated with the emissions from incinerators on health. Thermal hydrolysis has many advantageous to use which brought bellow:
slaughterhouse offal and animal mortalities. Pre-processing and equipment of each company varies as the feedstock changes. 2.3.2 Separation Separation is mainly for ensuring whether all feedstock is biodegradable and clean organic material. Non-biodegradable material take space and have a negative impact on HRT and size of the reactor. Separation process for food waste usually contains three main steps: Food Separation: Separation in home, restaurant or food industry Manual Sorting : Remove inorganic material like rock and metal Mechanical Sorters : Screens, Rotating Trommels, magnetic separation. 2.3.3 Hygienisation: Hygienisation is used for feedstock which contaminated in some form or contain pathogens or infectious material. Many companies don’t consider this part because pathogens is considered to be destroyed with simple mesosphilic 32C digestion. 2.3.4 Mechanical hydrolysis: Thermal pre-treatment (incineration) of MSW and Mechanical Biological pretreatment of waste are the most common methods in use for the pretreatment of municipal solid waste. Thermal pre-treatment of waste involves the controlled burning of waste, with or without energy recovery. This method of waste pre-treatment has increasingly been in use over the past few years mainly to reduce the amount of waste and to decrease their biological activity. However, this method of waste pre-treatment entails a much higher cost; longer pay back periods due to high capital investment and although, modern incinerators do comply with existing emission regulations, the public are still concerned with the adverse effects associated with the emissions from incinerators on health. Thermal hydrolysis has many advantageous to use which brought bellow:
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