ICNEA 4620—Sewage treatment and its recycling

Where 4620 sits

1. D Electricity, heat, gas and water production and supply industry
2. 46 Water production and supply industry
3. 462 Sewage treatment and its recycling
4. 4620 Sewage treatment and its recycling

What 4620 includes

• It includes the following sewage treatment and recycling activities：
• Collection of sewage
• Sewage treatment and deep purification
• Refers to the treatment and disposal of sewage sludge, and the reuse activities after purification.

What 4620 excludes

• The management of urban and rural domestic sewage discharge networks is included in 7810 (Municipal facilities management)

4620 in other systems