Design of an anechoic room under the conditions of forced ventilation;

Domestic waste composting was tested with the bench scale aerated static bin and the experimental results proved that the equipment realized the composting.

The control of positive aeration adopted the timer temperature feedback with integral variable flow rate is suitable for aerated static pile(ASP),in which the highest core temperature is controlled under 60℃;the container composting systems should adopt the control of aeration through O 2 feedback maintaining interstitial O 2 with 15%～20%( V/V ).

On the basis of analyzing the merits and defects of present landfilling methods,these methods are improved and organically forced aeration and leachate recirculation are combined into MSW aerobic bioreactor.

the composting tests which were comprised by forced aeration program to tannery sludge.

The forced aeration composting technique was used for composting of digested sludge from Tuandao Sewage Treatment Plant,and the air blower of the composting equipment was controlled by both time and temperature controller.

The kind and character of gas treatment are discussed and the forced ventilation type and the application of inactive gas on iron and steel enterprise are also put forward.

This paper finds out some solving method of ventilation and selection of exhaustion through the problems of natural and positive ventilation.