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Why should sludge be dewatered and dried

2021-06-30 16:21 108
Jiaozuo ZJN Environmental Protection Equipment Technology Co., Ltd.

 

After sewage treatment, the organics, inorganic and harmful substances including heavy metals in sewage will be transferred to sludge. Because of the high moisture content of sludge, it is difficult to treat sludge. The purpose of sludge dehydration and drying is to reduce the water content of sludge. The sludge with high mobility is transformed into solid or semi-solid dry sludge, which is convenient for subsequent disposal and reuse of sludge.

At present, the popular way of dehydration and drying treatment on the market is low temperature drying. Through the use of thermal energy technology to evaporate most of the water in the sludge, the sludge can achieve the effect of capacity reduction. Low temperature drying can effectively avoid the release of harmful gases in sludge, while retaining the heat value of sludge. The technology has the characteristics of energy saving, low carbon and environmental friendly.

 

Jiaozuo ZJN Environmental Protection Equipment Technology Co., Ltd.

 

Jiaozuo ZJN Environmental protection equipment technology Co.,ltd is a specialized manufacturer of sludge drying equipment. The drying process of the equipment is "rotary harrow three cylinders multiple-loop", "low temperature and large air volume". The drying mode is to increase the air volume and drying efficiency by increasing the wind speed properly when the temperature of hot air is low.

The sludge drying equipment is assembled by three cylinders with different diameters. The inner cylinder adopts forward flow drying, which can evaporate most of the water; the middle cylinder adopts reverse flow drying, which can make the materials continuously turn over during the drying period, fully contact with the hot air, and can make the materials evenly heated to further remove the moisture of sludge; the outer cylinder adopts AC plus reciprocating drying, which can meet the drying requirements under the effect of air volume and special material plate , automatic discharge.

Sludge drying equipment is to achieve the goals of sludge stabilization, harmless, reduction and resource utilization, and to open a new stage of sludge resource utilization.

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