Installation for measuring concentration in dense granular material of a flow and water treatment system comprising same
First Claim
1. Installation for measuring the concentration of dense granular material in a flow comprising a liquid, a dense granular material and fine particles in suspension, characterised by:
- at least one separation unit for the separation of the dense granular material from liquid and fine particles in suspension;
at least one measuring device comprising a time delay element for the measuring of at least one parameter representing the quantity of dense granular material separated during a predetermined time period T.
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Accused Products
Abstract
The invention concerns an installation for measuring the concentration in dense granular material in a flow comprising a liquid, a dense granular material and suspended fine particles. The invention is characterised in that it comprises: at least a member for separating the dense granular material from the liquid and the suspended fine particles, at least a device for measuring (12, 12a, 13) at least a parameter representing the amount of separated dense granular material for a specific time interval T. Such an installation may be integrated in a ballasted-floc water treatment system.
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Citations
20 Claims
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1. Installation for measuring the concentration of dense granular material in a flow comprising a liquid, a dense granular material and fine particles in suspension, characterised by:
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at least one separation unit for the separation of the dense granular material from liquid and fine particles in suspension;
at least one measuring device comprising a time delay element for the measuring of at least one parameter representing the quantity of dense granular material separated during a predetermined time period T. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. System for water treatment comprising:
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at least one assembly of coagulation-flocculation zones provided with water intake means, intake means for at least one coagulating reagent, intake means for at least one granular material denser than water and stirring means;
at least one sedimentation zone provided with a recuperation and evacuation zone for sludges and means for evacuating clarified water;
means for recycling at least a part of the granular material contained in said sludges upstream relative to the sedimentation zone through the intermediary of a hydrocyclone making it possible to recycle the granular material and to evacuate excess sludges as overflow, characterised by;
an installation for measuring the concentration of said dense granular material comprising at least one separation unit for the separation of the dense granular material from liquid and fine particles in suspension, and at least one measuring device for the measuring of at least one parameter representing the quantity of dense granular material separated during a predetermined time period T.
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Specification