Effective use of sewage sludge

We incinerate sludge generated by sewage treatment to reduce and stabilize it.
The sludge incineration ash remaining after incineration is used 100% effectively as "improved soil" and "cement raw materials".

Improved soil plant

Improved soil

Improved soil is soil that is made by mixing about 10% of incinerated ash into soil excavated during sewerage work, etc., to use high-quality backfill material.

Sludge incineration ash contains a lot of lime that makes the soil of high quality, and also has the effect of absorbing the moisture of the soil. We pay attention to the properties of this incinerated ash and set up an improved soil plant to produce improved soil.

The operation of the improved soil plant is carried out using the PFI method, a business method that utilizes the vitality of the private sector.

Improved soil plant PFI project
http://www.city.yokohama.jp/me/kankyou/gesui/pfi/kairyoudo/

Sewage sludge incineration ash uses sludge incineration ash as an alternative to clay because its components are similar to clay, which is the main raw material of cement production.

Cement is used a lot in civil engineering and construction work, so a large amount of sludge incineration ash can be used effectively.

• Case studies of effective use of improved soil using sewage sludge incineration ash
  Created on August 5, 2009