Since after sludge concentrated or digested, it still keep liquid flow state, with large volume, can not be transported and disposed of, in order to further reduce the moisture content and as low as possible, it need to make sludge dehydrated through sludge dehydrated device, finally to reduce the volume of sludge and convenient for transportation.

Mechanical vapor recompression (MVR) evaporator make use of the secondary steam generated in the evaporator, through compression, pressure, temperature increase, heat increase, and then sent to the evaporator heating chamber as heating steam, so that keep the liquid boiling state, while the heating steam itself condenses into water. By this way, the original steam to be discarded has been fully utilized, not only realize recovery of latent heat, and improve thermal efficiency.

The so-called zero emissions, refers to the unlimited reduction activities of pollutants and energy emissions up to zero, means that to recycle industrial waste water and to concentrate highly the salt content and pollutants into wastewater and all (more than 99%) for recycling, finally discharge no any waste liquid from factory.

Principle: Under the action of catalyst, inject ammonia into 280-420℃ fumes , so as to deoxidize NOx into N2 and H20.

The principle of double alkali method fume desulfurization technology is that adopt sodium hydroxide solution as a starting desulfurize agent, put formulated sodium hydroxide solution directly into the desulfurization tower so as to wash and desulfurize SO2 of fumes, and then these desulfurization by-product deoxidized sodium hydroxide through desulfurization regeneration tank and then back into the desulfurization tower for recycling.

Limestone or lime is used as a desulfurization absorbent, limestone is broken and finely ground into powder,then mixed with water to form an absorbent slurry, when lime is used as an absorbent, lime powder is digested and made into an absorbent slurry. In the absorption tower, the absorbent slurry is mixed with the fume, and the sulfur dioxide in the fume reacts with the calcium carbonate in the slurry and the air oxide in the drum so as to be removed, and final reaction product is gypsum.