The solid rate of dry anaerobic system is generally 25%-50%, similar to the nature of kitchen waste and some organic waste. No dilution, can be directly anaerobic. Damp heat and anaerobic inlet density less than 8%. If a 25% or 20% solid rate of garbage must be diluted, it must be diluted more than twice and the amount of biogas must be increased. The cost is very expensive and will increase operating costs, so what is the difference between wet anaerobic and dry anaerobic?

What is the difference between wet anaerobic and dry anaerobic?

The solid rate of dry anaerobic system is generally 25%-50%, similar to the nature of kitchen waste and some organic waste. No dilution, can be directly anaerobic. Damp heat and anaerobic inlet density less than 8%. If a 25% or 20% solid rate of garbage must be diluted, it must be diluted more than twice and the amount of biogas must be increased. The cost is very expensive and will increase operating costs, so what is the difference between wet anaerobic and dry anaerobic?

What is the difference between wet anaerobic and dry anaerobic?

Compared with wet and oxygen fermentation, dry anaerobic fermentation is less than 35% in the fermentation process, so there are fewer by-products. Correspondingly, the threshold of dry thermal fermentation technology is high, and there is no outstanding dry fermentation technology provider in China for the time being.

What is the wet anaerobic treatment method?

1. Aerobic, wet anaerobic and dry anaerobic fermentation. Among them, aerobic fermentation is widely used in the three treatment methods of wet waste. Aerobic fermentation mainly refers to the fermentation of waste under oxygen-containing conditions. The process is relatively simple, easy to popularize, and the equipment cost is low. This also makes good oxygen fermentation the dominant wet waste treatment method in many areas. But good oxygen fermentation has two major problems: transportation and output use.

2. On the one hand, due to technological reasons, good oxygen fermentation is inevitable under open conditions, but garbage fermentation is often accompanied by odor emitted into the air. Although it is not a harmful gas, it seriously affects the lives of residents.

2. The process is a biological treatment process that uses anaerobic microorganisms to complete the decomposition of organic matter in the material, and most of them are converted into biogas. The great advantage of this technology is that it consumes very rare energy and chemically degrades organic matter, and can also recover the available biomass green energy. It's a process that really becomes a treasure.

3. Has been applied in many countries around the world. After actual inspection and verification, the technology is stable and reliable, and the operation and maintenance cost is lower than other similar technologies. The process is widely used in municipal solid waste (kitchen waste, sludge, kitchen waste, etc.). Agricultural waste (straw, fruits and vegetables, manure, etc.) And high concentration of industrial wastewater and waste residue (yeast wastewater, grain, vinegar and small household appliances, etc., with the successful application of ANAMET anaerobic process, Plack has been rated as a leader in the field of organic waste treatment in China's solid waste industry from 2014 to 2020 for many years. Progress Award. The Changsha United Kitchen and Sanitary Project, which has won many awards such as "Hunan Resource Recycling Case" and "Hunan Environmental Sanitation Industry Bench Project", also adopted this technology.

What is the advantage of wet anaerobic?

1. The metal reactor can be made into a steel reactor, with a short construction period and a long service life. At present, there are reactors that have been in operation for more than 20 years in China; at present, the unit volume of anaerobic reactors for sludge and organic waste can reach 14000 m3.

2. The project is large, the system equipment is few, the maintenance and control is simple, and the land is saved; the debugging is simple, the operation is stable, and there is no impact load.

3. The organic degradation rate is high, and the gas produced is more.

4. Use a special mechanical stirrer, uniform stirring, low energy consumption, not easy to wear, and will not form short-circuit current.

5. Extracorporeal heat exchange, equipped with suitable heat exchanger, high efficiency and convenient maintenance.