Geological resources revealed the law of water production and dehydration of sludge aerobic fermentation process

The water content of dehydrated urban sludge is as high as about 80%, and the high water content brings many problems to the treatment and disposal of sludge. Biological drying through sludge aerobic fermentation is an energy-saving and economical drying treatment method. Mastering the changes of water input and output during sludge aerobic fermentation can better understand the dehydration efficiency of the reactor and optimize the process strategy accordingly. The research team of Chen Tongbin, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, conducted in-situ on-line monitoring of the water content and evaporation of the reactor body to calculate the equilibrium of the reactor water content and studied the water production and dehydration rules of the sludge aerobic fermentation process.

Studies have shown that when the CTB aerobic fermentation process is used for aerobic fermentation of sludge, the apparent dehydration, evaporation and water production of the reactor at high temperature are up to 28.8 ± 7.90 kg d-1 and 37.7 ± 7.09 kg d-1, respectively. And 7.93 ± 2.39 kg d-1. After the first leveling, the apparent dehydration increased and then decreased again; on the 17th to 20th days, the apparent dehydration and evaporation of the reactor were very close, and the decline tended to be flat. During the whole aerobic fermentation process of sludge, the water production of the reactor accounted for a low proportion of evaporation, which was 13.2%. Forced ventilation promotes the evaporation of water in the reactor, and the high temperature period is the peak period of water production and dehydration of the reactor.

The research results were published in the journal Bioresource Technology (Lu Cai, Ding Gao, Tong-Bin Chen, Hong-Tao Liu, Guo-Di Zheng, Qi-Wei Yang. Moisture variation associated with water input and evaporation during sewage sludge bio-drying. Bioresource Technology. 2012, 117: 13-19).

Manufacturer of a wide range of products which include bopp laminated wall putty bags, PP Woven Putty Bag, multicolor printed wall putty bags, two layer bopp laminated wall putty bags, wall putty laminated bags and wall putty laminated packaging bags.

Since our inception in this domain, we are considered as one of the prime manufacturers, exporters and suppliers of Putty bag . With the perfect combination of strength and durability, PP putty sack is ideal to pack the wall putty to ensure its non-contact with moisture during storage. Woven Lime Bag is specifically manufactured by our ingenious professionals using optimum quality polymers and avant-garde techniques. Beside this, we offer this Limestone sack to the clients in different colours, sizes and finishes at negotiable prices.

PP Woven Putty Bag

Putty bag, PP putty sack, Woven Lime Bag, Limestone sack

Shijiazhuang Boda Plastic Chemical Co., Ltd. , https://www.ppwovenbag-factory.com