METHOD FOR DIRECTIONALLY REGULATING SULFUR-BASED FILLER AUTOTROPHIC DENITRIFICATION FILTER

WIPO Patent Application WO/2024/021422

A1

The present invention provides a method for directionally regulating a sulfur-based filler autotrophic denitrification filter. In the method, denitrification treatment of wastewater is achieved by means of adjusting the water drop height, exposing a reaction bed layer, and dosing a sulfur source. In addition, a dissolved oxygen probe, a liquid level detector, a bed layer height monitor, and an online nitrate nitrogen monitoring device are arranged in the denitrification filter. Nitrate nitrogen content in influent and effluent wastewater is monitored in real time, and the difference between the two values is calculated by means of a central control system, and by means of comparing the difference with a set value, the water drop height is promptly regulated, the reaction bed layer is exposed, and the sulfur source is dosed. The method can not only achieve regulation for high denitrification loads but can also achieve regulation for low loads, such that nitrate nitrogen removal content is controlled within a certain range, which not only facilitates improving wastewater treatment effectiveness but can also effectively reduce treatment costs, making the method suitable for being applied to actual production.

CHENG HAOYI (CN)
DONG HENG (CN)
CHEN XINJIE (CN)
WANG AIJIE (CN)
SUN YILU (CN)
XU JIAMIN (CN)

PCT/CN2022/136037

February 01, 2024

December 01, 2022

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HARBIN INST TECHNOLOGY SHENZHEN (CN)

C02F3/28

CN201010580Y	2008-01-23
CN111704239A	2020-09-25
CN214734805U	2021-11-16
EP2196438A1	2010-06-16
JP2006346589A	2006-12-28

BEIJING CONCEPT INTELLECTUAL PROPERTY AGENCY (CN)

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