Mechanical Biological Treatment of Municipal Solid Waste

Mechanical biological treatment(MBT) of municipal solid waste includes mechanical and biological treatment, which can complete waste treatment independently, and can also be combined with other waste treatment technologies such as incineration technology and landfill technology to complete waste treatment together.

The mechanical part of mechanical biological treatment mainly uses sorting and screening equipment to undertake the treatment of components with high combustion value in mixed municipal solid waste, such as organic matter, plastic, residue, paper, wood and other components. The system solution is suitable for the front-end pretreatment of waste treatment processes such as circulating fluidized bed power generation, cement kiln cooperation, pyrolysis gasification, dry anaerobic, etc. At the same time, it is suitable for biological treatment technology, including anaerobic and aerobic technology, to realize deep processing and utilization of organic waste from many aspects, such as biodegradation, fermentation and ripening, biological drying, and energy utilization.

Technical characteristics

• The process route is short and compact, and the failure rate is reduced in design;
• All rotating equipment is equipped with double overload protection, single overload protection and interlocking overload protection to improve the service life of the equipment and reduce the cost of maintenance and overhaul;
• The whole array high-pressure pulse atomization purification system in the workshop can automatically detect the odor concentration and ensure the gas quality in the workshop.
• The centralized drainage and gas gathering device at the inlet and outlet, combined with the outdoor centralized purification treatment device, can achieve indoor micro-negative pressure environment and eliminate the possibility of gas leakage outside the workshop;
• The system integrates a bulky waste crushing and screening unit, which can be used for collaborative disposal of bulky waste in municipal solid waste.

System advantages

1. Strong adaptability: it can handle municipal solid garbage of various components and regions without being affected by garbage components;
2. High resource utilization rate: all available resources can be recovered to the maximum extent;
3. Thorough energy utilization: for non-renewable resource combustibles, use energy utilization;
4. Strong environmental affinity: no longer blindly incinerate, realize systematic comprehensive control and treatment from solid, liquid and gas three states;
5. Full-function processing: the combination of various technologies can realize the best and reasonable use of all substances; 
6. Good cost-effectiveness: biological treatment, complementary utilization of resources, automatic control, and reduction of operating costs.

System products

Compared with traditional processing methods, mechanical biological treatment includes a wider range of processing processes and has more types of product output.

• Recyclable resources, metal, paper, plastic, glass, wood, chemical fiber fabric;
• Refuse derived fuel (RDF) has a high calorific value due to the high content of paper and plastic;
• Stable bio-organic matter, produced by biological treatment.