Mechanisms to clean sewage

Sewage drained from homes passes through a sewer pipe and enters a sand basin.
In this pond, remove the large garbage and sand in the sewage, pump it up with a sewage pump, and first sent to sedimentation pond.

　　　　　　Image (Not)　　　　　　　　　　　　　　　　Removing equipment (ki)　 　　　　　　　　　　　　　Sewage pump　

Slowly drain the sewage slowly, sinking the fine garbage that had not been removed in a sand basin (Chinachi). ) Remove.
The submerged mud is collected by a sludge machine and sent to the adjusted sludge (choseioi) tank.

　　　　　　　Image (Not)　　　　　　　　　　　 　sedimentation pond first entrance　　　　　　　　　　 　 　Sludge (Odei) scraping machine

The mud (doro) with small creatures (microorganisms) that cannot be seen in the eyes is called activated sludge.
This activated sludge and the water that first came out of sedimentation pond (Saishochindenchi) are blown by blowing air with a scattering device. Stir while watching.
The dirt of the sewage is eaten by small creatures, and the water is cleaned.

　　　　　　　Image (Not)　　　　　　　　　　 　　 Inside the reaction tank　　　　　　　　　　　　　 　Sprators

Since the water (water) that comes out of the reaction tank contains activated sludge, it slowly spends time (jikan) and mud (doro) sink in this pond.
The drained water (mizu) above overflows from the triangular (Sankaku) cough on the surface of the pond and flows into the contact tank. .
The mud that sinks (doro) returns to the reaction tank, and the excess mud is sent to the adjustment sludge tank.

　　　　　　　Image (Not)　　　　　　　　　　　　　 　Triangle (Sankaku) cough　　　　　　　　　　　　　　　Water (water)

The clean water (mizu) is disinfected with hypochlorous acid (Jiaensosan) sodium solution (yoeki) and flows to Tsurumi River.

　　　　　　Image (Not)　　　　　　　　　　　　　　　Contact tank

The extra mud of sedimentation pond first and last sedimentation pond is further submerged.
Deep mud is sent to the Northern Sludge Resource (Hokubuo Deikagen) conversion center and treated.

　　　　　　Image (Not)　　　　　　　　　　　　　Adjusted sludge in the tank

At the Water Reclamation Center, we check every day to see if water is clean.
In addition, the microscope (kenbisho) of activated sludge is also checked with a microscope.

　　　　　　　State of analysis　　　　　　　　　　　　　　　Beetle　　　　　　　　　　　　A friend of mine

At the Tsuzuki Water Reclamation Center, you can receive a request for facility tours at any time. For more information, please see here (link to the tour guide page).