Solution

Classification: Core advantages

Status of kitchen waste disposal

According to the "Thirteenth Five-Year Plan for the Construction of Harmless Treatment Facilities for Urban Domestic Waste", nearly 86% of my country's kitchen waste has not been treated harmlessly, let alone resource utilization.

Kitchen waste characteristics:High moisture content, high organic content, containing a large number of pathogenic microorganisms, easy to rot and stink, breeding pests.

Early disposal: landfill or incineration

The investment is large, which is not conducive to the development of the ecological environment; the traditional landfill is easy to rot and stink and breed mosquitoes and flies in a relatively short period of time; the high moisture content affects the calorific value of the incineration plant

Domestic current main treatment process: aerobic composting, anaerobic digestion

Aerobic Compost:Poor compost quality. The maturity is low, the content of organic matter is more than 20%, and the content of impurities such as sand, glass and plastic is high. The composition is complex, the front sorting line is complex and lengthy, and the sorting effect is not good. The project occupies a large area and the odor control is difficult.

Anaerobic Digestion:Compared with aerobic composting, the investment is larger, but it has the advantages of short fermentation time, small footprint, resource utilization of biogas produced in anaerobic process, and small secondary pollution.

Advantages of dry anaerobic technology

Strabag LARAN dry anaerobic technology has a variety of specifications (1900m3~3200 m3), which can be flexibly selected according to the project situation. Moreover, the technology has low requirements for pretreatment process and high compatibility with impurities. It also has certain advantages in heating, such as low heating demand, low loss, strong adaptability to dry matter content in the reactor, low heat requirement and low process water consumption;
Strabag LARAN dry anaerobic uses alternating low-speed motors (feeding screws and agitators), with low operating cost. The discharge of digested biogas residue uses a vacuum discharge system that is not easy to wear, and the application is reliable. The material flows in the reactor in a flat push flow mode, avoiding the short circuit phenomenon of direct discharge of fresh material, with long residence time of organic matter, high decomposition rate and large biomass production. Garbage treatment load capacity, flexibility to cope with large fluctuations in processing capacity.
Strabag LARAN dry anaerobic slurry has a patented stirring device, which is not easy to produce scum and sediment in the reactor. The digestion reactor is small in size and compact in arrangement, with high degradation rate of volatile suspended solids, high biogas output and low head pressure in the reactor. The digestion reactor has high structural strength; Modular design is easy to expand later.
Strabag LARAN dry anaerobic technology has a variety of specifications (1900m3~3200 m3), which can be flexibly selected according to the project situation. Moreover, the technology has low requirements for pretreatment process and high compatibility with impurities. It also has certain advantages in heating, such as low heating demand, low loss, strong adaptability to dry matter content in the reactor, less heat required and process water consumption, and low sewage volume;
Strabag LARAN dry anaerobic uses alternating low-speed motors (feeding screws and agitators), with low operating cost. The discharge of digested biogas residue uses a vacuum discharge system that is not easy to wear, and the application is reliable. The material flows in the reactor in a flat push flow mode, avoiding the short circuit phenomenon of direct discharge of fresh material, with long residence time of organic matter, high decomposition rate and large biomass production. Garbage treatment load capacity, flexibility to cope with large fluctuations in processing capacity.
Strabag LARAN dry anaerobic slurry has a patented stirring device, which is not easy to produce scum and sediment in the reactor. The digestion reactor is small in size and compact in arrangement, with high degradation rate of volatile suspended solids, high biogas output and low head pressure in the reactor. The digestion reactor has high structural strength; Modular design is easy to expand later.

Dry anaerobic technology in construction case