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vol.2 FISHING GEAR CLEANING FACILITY

FISHING GEAR CLEANING FACILITY

This centre cleans fishing instruments, such as seines, fish traps and other types of gear. The wastewater left after cleaning was stored in an underground tank which was emptied periodically by another company for processing. They decided to install NIHON KASETSU equipment to do their own water management and reduce operating costs.
 
First, the dirty water was extracted from the underground tank for temporary storage into 2 tanks. From there, the water was transferred to the NWC-60 equipment for treatment; the purified water was run off into a river and the sludge buried.
 
 
             
 
 
NWC-60 equipment
 
 
Pumping the dirty water from the tank
 
 
Raw water tanks
 
NWC-60 equipment Pumping the dirty water from the tank Raw water tanks
 
 
From the tanks to the treatment equipment
 
 
Running off the purified water into the river
 
 
Settling tank for the sludge, which was subsequently buried
 
  From the tanks to the treatment equipment   Running off the purified water into the river   Settling tank for the sludge, which was subsequently buried  
 
Wastewater treatment process
The water turbidity was excessively high, up to 300.000 mg/L SS, due to the high concentration of organic components. River water had to be added to the collection tank to dilute the mixture to facilitate treatment and stop the pump from blocking.
 
             
 
 
Collection tank
 
 
Close-up of NWC-60 equipment primary coagulation tank
 
 
Close-up of NWC-60 equipment primary sedimentation tank
 
Collection tank Close-up of NWC-60 equipment primary coagulation tank Close-up of NWC-60 equipment primary sedimentation tank
 
 
Close-up of NWC-60 equipment secondary sedimentation tank
 
 
Purified water outlet for discharging into the river
 
 
Cleaning the pump
 
  Close-up of NWC-60 equipment secondary sedimentation tank  Purified water outlet for discharging into the river   Cleaning the pump