US 2021/0197115 A1Published application

System for treating malodorous gas from sludge

AssigneeAnhui Resource Saving Environmental Technology Co., Ltd.

InventorsDudu HUANG, Yun WU, Sihai XU, Lei CUI

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Abstract

The present application provides a system for treating malodorous gas from sludge, which includes an air compressor, a first pressure swing adsorption tower, a second pressure swing adsorption tower, a buffer tank, a decomposition tank, an exhaust gas scrubber and a vacuum device. The present invention relates to a process for treating malodorous gas from sludge treatment, which includes several steps as follow: compressing the malodorous gas by using an air compressor, and adsorbing by using a pressure swing adsorbent. The air for removing the malodorous component is configured for sludge separation and aerobic aeration in the treatment tank. When the pressure swing adsorbent reaches the design upper limit value, the intake air is stopped, decompression and desorption start, and the enriched malodorous component is sent to catalytic combustion or photocatalytic decomposition, and then the acid gas in the tail gas is neutralized with an alkaline absorbent, and finally discharged to the standard. The treatment system in the present invention has the advantages of low processing cost, reduced malodor treatment volume, complete treatment of malodorous gas, and easy disposal of three wastes.

Claims9

Dependent claims

A system for treating malodorous gas from sludge, includes:

an air compressor, a first pressure swing adsorption tower, a second pressure swing adsorption tower, a buffer tank, a decomposition tank, an exhaust gas scrubber and a vacuum device;
the inlet of the air compressor is configured for accessing the malodorous gas to be treated, the outlet of which is connected to the inlet of the first pressure swing adsorption tower through a first valve, and is connected to the inlet of the second pressure swing adsorption tower through a second valve;
the outlet of the first pressure swing adsorption tower is connected to the inlet of the decomposition tank through a third valve, and connected to the inlet of the buffer tank through a fifth valve;
the outlet of the second pressure swing adsorption tower is connected to the inlet of the decomposition tank through a fourth valve, and is connected to the inlet of the buffer tank through a sixth valve;
the outlet of the buffer tank is configured for outputting the treated gas;
the outlet of the decomposition tank is connected to the inlet of the exhaust gas scrubber, the outlet of the exhaust gas scrubber is connected to the inlet of the vacuum device, and the vacuum device is configured for discharging the exhaust gas.

3 more elements

Dependencies are inferred from the claim text.