Water purifying apparatus with electric field generator

A purifying apparatus for purifying water flowing in a flowing direction over a flowing-water bed, comprising:

• a negative electrode plate to be disposed on the flowing water bed;
• and a positive electrode plate to be disposed at an upper surface of the flowing water opposite to the negative electrode plate so as to have upstream and downstream end portions and opposing side portions with respect to the flowing direction of the water;
• said positive electrode plate being adapted so as to be dipped below the upper surface of the flowing water with floats being disposed at least at one of the upstream and downstream end portions of the positive electrode plate and the opposing side portions of the positive electrode plate;
• wherein structure is provided to position said positive electrode plate at a position of the upper surface of the flowing water opposite the negative electrode plate;
• and wherein said positive electrode plate and said negative electrode plate are provided with an electric field generator so that water pollution substances contained in the flowing water are oxidized and decomposed by a generation of high electric field pulses;
• and wherein a turbidity detector is provided at a location to be upstream of said positive electrode plate, thereby constituting an automatic control mechanism for changing an electric current value between 1 mA and 100 mA in compliance with the turbidity.

A purifying apparatus for purifying water flowing in a flowing direction over a flowing-water bed, comprising:

• a negative electrode plate to be disposed on the flowing water bed;
• and a positive electrode plate to be disposed at an upper surface of the flowing water opposite to the negative electrode plate so as to have upstream and downstream end portions and opposing side portions with respect to the flowing direction of the water;
• said positive electrode plate being adapted so as to be dipped below the upper surface of the flowing water with floats being disposed at least at one of the upstream and downstream end portions of the positive electrode plate and the opposing side portions of the positive electrode plate;
• wherein structure is provided to position said positive electrode plate at a position of the upper surface of the flowing water opposite the negative electrode plate;
• and wherein said positive electrode plate and said negative electrode plate are provided with an electric field generator so that water pollution substances contained in the flowing water are oxidized and decomposed by a generation of high electric field pulses;
• and wherein a flow velocity meter is installed in the flowing water, thereby constituting an automatic control mechanism for changing a frequency between 10 kHz and 150 kHz based on the flow velocity.

A purifying apparatus for purifying water flowing in a flowing direction over a flowing-water bed, comprising:

• a negative electrode plate to be disposed on the flowing water bed;
• and a positive electrode plate to be disposed at an upper surface of the flowing water opposite to the negative electrode plate so as to have upstream and downstream end portions and opposing side portions with respect to the flowing direction of the water;
• said positive electrode plate being adapted so as to be dipped below the upper surface of the flowing water with floats being disposed at least at one of the upstream and downstream end portions of the positive electrode plate and the opposing side portions of the positive electrode plate;
• wherein structure is provided to position said positive electrode plate at a position of the upper surface of the flowing water opposite the negative electrode plate;
• and wherein said positive electrode plate and said negative electrode plate are provided with an electric field generator so that water pollution substances contained in the flowing water are oxidized and decomposed by a generation of high electric field pulses;
• and wherein there is adjunctively provided, together with a unit for collecting and separating sediments generated by a suspension, a sedimentation tank decreasing the flow velocity in a rear of the unit in the flowing direction, or there is adjunctively provided a system in which a water flow is dammed and a part thereof is pumped up by a pump so as to be bypassed from the water flow and the sediments are deposited in a gravity sedimentation tank, and a supernatant liquid is returned to an original river.