Patent · US Active

Apparatus and method for removing nitrogen and phosphorus from sewage by using sponge iron and activated sludge

US10800686B2 · kind B2 · utility

0Cited by

11References

7Claims

0Family size

Inventors

Dongyang Wei · 流花街道, CN
Yonggang Wu · Hunan, CN
Xiang Wei · Fremont, US
Wenting JIANG · Wuhu, CN
Tao He · Wilmington, US
Xiaowen Liu · Yongzhou, CN
Xi Chen · New York, US
Wen-Wen Zhou · 流花街道, CN
Jialiang Zhu · 流花街道, CN

Key dates

Filing date	Oct 8, 2018
Grant date	Oct 13, 2020
Priority date	—
Expiry date	Oct 8, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W10/10
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An apparatus and a method for removing nitrogen and phosphorus from sewage by using sponge iron and activated sludge are disclosed herein. The apparatus comprises a raw tank, a pH adjusting tank, a primary SBR reactor, a secondary SBR reactor, an intermediate tank, and a discharge tank; by modification of sponge iron, preparation of composite filler, sludge inoculation and domestication, and sewage treatment, an effect of simultaneous denitrification and dephosphorization is achieved in one reactor using the combined action of sponge iron and activated sludge with high nitrogen and phosphorus removal efficiency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.