Sewage sludge

CPC v2.1 Code: 3992

About sewage sludge

cpc code 3992 covers the industry of sewage sludge, a crucial byproduct of wastewater treatment processes. Sewage sludge plays a vital role in the broader waste management and environmental protection sectors, as it is a valuable resource that can be repurposed and recycled. This industry is essential for maintaining sustainable water infrastructure and reducing the environmental impact of human activities.

Production process

The production of sewage sludge involves several key steps. First, wastewater is collected and transported to treatment facilities, where it undergoes a series of physical, chemical, and biological processes to remove contaminants. The remaining solid material, known as sewage sludge, is then dewatered, stabilized, and prepared for further processing or disposal.

Production inputs

The main inputs required for the sewage sludge industry include the wastewater itself, as well as various chemicals and energy sources used in the treatment process. Specialized equipment, such as centrifuges, driers, and digesters, are also essential for the efficient processing of sewage sludge. Additionally, the industry relies on a skilled workforce of water treatment professionals and engineers.

Production outputs

The primary output of the sewage sludge industry is the treated and processed sludge, which can be used as a soil amendment or fertilizer in agricultural applications 0115 Corn farming, 0116 Soybean farming, and 0119 Other crop farming. Sewage sludge can also be used as a fuel source in energy production or as a raw material for the manufacture of construction materials, such as bricks and cement.

Family tree for sewage sludge

    graph LR
    A["<a href='/classifications/cpc/v2-1/3'>3: Other transportable goods, except metal products, machinery and equipment</a>"]
A --> B["<a href='/classifications/cpc/v2-1/39'>39: Wastes or scraps</a>"]
B --> C["<a href='/classifications/cpc/v2-1/399'>399: Other wastes and scraps</a>"]
C --> D["<a href='/classifications/cpc/v2-1/3992'>3992: Sewage sludge</a>"]

    C --> E["<a href='/classifications/cpc/v2-1/3991'>3991: Municipal waste</a>"]
C --> F["<a href='/classifications/cpc/v2-1/3993'>3993: Clinical waste, including pharmaceutical waste</a>"]
C --> G["<a href='/classifications/cpc/v2-1/3994'>3994: Waste organic solvents</a>"]
C --> H["<a href='/classifications/cpc/v2-1/3995'>3995: Wastes from chemical or allied industries</a>"]
C --> I["<a href='/classifications/cpc/v2-1/3999'>3999: Other wastes n.e.c.</a>"]

    D --> J["<a href='/classifications/cpc/v2-1/39920'>39920: Sewage sludge</a>"]


    %% Color coordination by level

    classDef level1 color:#000,fill:#a8f9ff,stroke:#333,stroke-width:2px
    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level1
class B level2
class C level3
class D level4
class E level4
class F level4
class G level4
class H level4
class I level4
class J level5

  class D highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class D highlight