METHOD FOR RECOVERING AMMONIA NITROGEN IN KITCHEN WASTE AND PREPARING CARBON SOURCE FOR SEWAGE TREATMENT

WIPO Patent Application WO/2023/206810

A1

Disclosed is a method for recovering ammonia nitrogen in kitchen waste and preparing a carbon source for sewage treatment. The method uses nine systems including a kitchen waste crushing and sorting system, a screw extrusion system, a sand and impurity removing system, a thermal hydrolysis system, an oil extraction system, a solid-liquid separation system, a coagulation-sedimentation system, and a deamination system. By means of the method, grease and NH3 in the kitchen waste can be recovered, salt in the kitchen waste can be reduced, and the quality of an organic carbon source prepared from the kitchen waste can be improved.

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LIU DONG (CN)
LIU JIE (CN)
ZHANG XIAOSAI (CN)
LIU JUN (CN)
ZHU JING (CN)
WANG JINJIN (CN)
YUAN JIANHAI (CN)

PCT/CN2022/103753

November 02, 2023

July 04, 2022

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NANJING WONDUX ENVIRONMENTAL TECH CO LTD (CN)

B09B3/35; B09B3/30; B09B3/32; B09B3/38; B09B3/45; B09B3/70; B09B5/00; C01C1/02; C01C1/26

CN112808738A	2021-05-18
CN109455884A	2019-03-12
CN113664023A	2021-11-19
CN113816549A	2021-12-21
KR101267054B1	2013-05-27
CN103773818A	2014-05-07

NANJING RUIHONG PATENT & TRADEMARK AGENCY (ORDINARY PARTNERSHIP) (CN)

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