Tech. Comparison

Background

Due to abnormal climate caused by climate changes, industrialization and urbanization, an innovation countermeasure on the prevention of backflow of currents, flooding and drainage of inner basin is demanded to prevent flooding damage in the low basin area and shore area.

Comparison

Passive floodgate, which solves the problems of existing floodgates, is operated unmanned and powerless by natural energy (buoyancy) according to the rise and fall of water surface level that it is effective in flood damage prevention through rapid backflow prevention and drainage of inner basin and can respond to climate changes immediately as well.

Problems with traditional Floodgate

Previous
Powered Floodgate		 Previous
Automatic Gate
Normally Status Partially opened Closed
Problem
  • It is sometimes opened artificially for drainage and may result in damage by backflow in case of unexpected heavy rain
  • Only applied below 1.5m x 1.5m
  • Odor/gas generated inside the sewerpipes are brought into the house sewer
  • Fish/wild animals can’t move
  • Strict management of driving device and mechanical device necessary (cost)
  • Excessive maintenance cost for gate repair, electricity cost, etc.
  • Hinders views & contaminates water(grease filling, etc.)
In case of emergency Operation Operator manually operates or remotely operates in case of backflow Operates according to the discharge by internal water pressure
Problem
  • Unable to operate due to machine malfunction or blackout by lightning
  • Flooding damage in case of control mistake or accident to managing personnel
  • Possibility of incomplete opening/closing
  • Discharge of large debris isn’t smooth, causing malfunction
  • Sewer can’t be opened completely due to the weight of cutoff gate, limiting the amount of discharge
Previous
Powered Floodgate
Normally StatusPartially opened
Problem
  • It is sometimes opened artificially for drainage and may result in damage by backflow in case of unexpected heavy rain
  • Only applied below 1.5m x 1.5m
  • Odor/gas generated inside the sewerpipes are brought into the house sewer
  • Fish/wild animals can’t move
In case of emergency OperationOperator manually operates or remotely operates in case of backflow
Problem
  • Unable to operate due to machine malfunction or blackout by lightning
  • Flooding damage in case of control mistake or accident to managing personnel
Previous
Automatic Gate
Normally StatusClosed
Problem
  • Strict management of driving device and mechanical device necessary (cost)
  • Excessive maintenance cost for gate repair, electricity cost, etc.
  • Hinders views & contaminates water(grease filling, etc.)
In case of emergency OperationOperates according to the discharge by internal water pressure
Problem
  • Possibility of incomplete opening/closing
  • Discharge of large debris isn’t smooth, causing malfunction
  • Sewer can’t be opened completely due to the weight of cutoff gate, limiting the amount of discharge

Our passive floodgate

Passive floodgate is operated unmanned and powerless by natural energy (buoyancy) according to the rise and fall of water surface level,
so it is effective in flood damage prevention through rapid backflow prevention and drainage of inner basin and can respond to climate changes immediately as well.

Our
passive floodgate
Normally Status Permanently opened
Strengths
  • Completely automatic opening/closing
  • Normally opened 100%
  • No need of power
  • No need of operating personnel
  • Small repair/maintenance cost
  • Fish/wild animals can use as migration channel
In case of emergency Operation 100% automatic operation by buoyance based on water level
Problem
  • No expected problem as problems of existing floodgate were completely supplemented
Our
passive floodgate
Normally StatusPermanently opened
Strengths
  • Completely automatic opening/closing
  • Normally opened 100%
  • No need of power
  • No need of operating personnel
  • Small repair/maintenance cost
  • Fish/wild animals can use as migration channel
In case of emergency Operation100% automatic operation by buoyance based on water level
Problem
  • No expected problem as problems of existing floodgate were completely supplemented