Brief Introduction to Urban Sewage Treatment Project in Dinghu District, Zhaoqing City, Guangdong Province

Dinghu District Urban Sewage Treatment Integration Project, with a treatment capacity of 20000 m3/d, is another major application of Huayuan Environment's new functional nano flat Ceramic membrane in the field of domestic sewage treatment.

In this project, the raw water enters the facultative area of the biochemical tank after pretreatment in the front section, then passes through the micro oxygen area I, micro oxygen area II, and finally enters the membrane tank for Nitration, organic hydrolysis, shortcut nitrification and denitrification or Denitrification, phosphate reduction, etc. The process takes the nano flat Ceramic membrane reactor as the core, through the precise control of dissolved oxygen concentration in different functional areas, combines the traditional "cascade" sewage biochemical treatment process with the new functional nano ceramic flat membrane treatment technology, and "cascade" as a unit. While achieving simultaneous removal of COD and nitrogen and phosphorus, it can also transform the surplus sludge into internal carbon source, greatly reducing operating costs.

This process has outstanding advantages such as stable effluent quality, small footprint, low sludge disposal cost, modular functionality, and intelligent operation management. The successful operation of the project in Dinghu District marks that Huayuan Environnement's nano ceramic flat membrane is an absolute leader in the field of municipal sewage treatment.

Inlet and outlet water quality of domestic sewage treatment project in Dinghu District：

Indicator items	COD	BOD	SS	Ammonia nitrogen	TN	TP
Design inlet water quality	≤250	≤125	≤150	≤25	≤35	≤3.5
Design effluent quality	≤30	≤6	≤10	≤1.5(5)	≤15	≤0.3
Actual effluent quality	≤15	≤3	≤0.5	≤0.1	≤8	≤0.3