Tohkemy Moving Layer Type Filtration Equipment Water Treatment Systems

Manufacturer: Tohkemy Corporation
Model: Moving Layer Type Filtration Equipment

Features

Flow raw water in and send air, then both filtration and washing process are done at the same time.
No need for back wash pump.
Unnecessary for keeping the amount of washing water inside the treated water tank, reduction of installation space.
Fully automated operation, easy for maintenance.

Applications

Decontamination for raw water with much of suspended substances (Pretreatment filtration)
Iron removal filtration with high concentration

Product Specifications

Operating Environment	Place of installation	Indoor _or outdoor
Operating Environment	Temperature	0～40℃
Raw Water	Water temperature	0～40℃ (No freezing)
Raw Water	Water quality	Turbidity: Not more than 100 degree SS: Not more than 100/L
General Conditions of Use	Filter material type	Single-layer: Filter sand (Filter material only for Moving Layer Type Filtration Equipment)
General Conditions of Use	Filteration velocity	Standard LV8~10m/h
Treated Water	Water quality	Turbidity: Not more than 10 degree SS: Not more than 10mg/L
Washing	Wash water flow rate	10～15% of raw water flow rate
Washing	Washing air volume	30～60NL/（min・m²） 0.2～0.3MPa

This device also complies with the “Sewerage Service Agency Specifications.”
Sewerage Service Agency Specifications

Continuous Filtration Method	Continuous Filtration, Continuous Cleaning Sand Filter
Filtration Rate	Below 200m/day (LV=8.3m/h _or less)
Raw Water Concentration _and Selected Water	When BOD is 20 mg/L _or less and SS is 20 to 30 mg/L The SS concentration of filtered water is 10 mg/L _or less
Cleaning	Water volume: Less than 10% of raw water volume Air volume: Less than 30 NL/min/m² Air pressure: 0.3 Mpa
Filter Media Type	Effective Diameter: Approx. 1.0mm Uniformity Coefficient: 1.4 _or less Loss on Ignition: 0.75% _or less Specific Gravity: 2.57–2.67