2results about How to "Improve oxygen use efficiency" patented technology

The application relates to the technical field of waste gas treatment, and discloses a low-temperature plasma catalytic treatment system and method for organic waste gas. The system comprises a first reaction unit, a second reaction unit, a third reaction unit, an ozone generator (18) and a COx filter (19), wherein the first reaction unit is a plasma reactor connected with a high-voltage power supply, the second reaction unit comprises two or more plasma reactors connected with high-voltage power supplies, and the third reaction unit is a reactor provided with a transition metal oxide catalyst. According to the technical scheme, the degradation of VOCs in oxygen-poor waste gas can be realized at a lower operation cost and without changing the gas composition.

This invention discloses an operation control method for achieving deep nitrogen removal in a membrane-aerated biofilm reactor, comprising the following steps: S1. Biofilm cultivation and thickness control; installing a hollow fiber permeable membrane module in the reactor, and controlling the ratio of membrane area to effective reactor volume to be 80-150 m². 2 / m 3 The invention employs the following steps: 1. Establishing a soft sensor for biofilm thickness based on the linear relationship between exhaust oxygen purity and bulk ammonia nitrogen concentration to regulate biofilm thickness; 2. Optimizing the denitrification process of the hybrid MABR process; Immersing the membrane module in anoxic suspended sludge zone, oxygen is transferred from the inside of the membrane to the outside biofilm via a reverse diffusion mechanism, while ammonia nitrogen and organic matter in the wastewater diffuse from the bulk liquid phase into the biofilm, forming an aerobic layer and anoxic layer from the inside out within the biofilm along the oxygen diffusion direction; 3. Deep denitrification and N2O emission reduction. This invention's operation control method reduces process energy consumption, achieves high denitrification rates, and saves energy and reduces emissions; furthermore, the biofilm exhibits excellent stability and extended lifespan.