Wastewater treatment system
a wastewater treatment system and wastewater technology, applied in the direction of moving filter element filters, filtration separation, separation processes, etc., can solve the problems of impeding the flow through the system, affecting the efficiency of the system, and requiring a great deal of maintenance. , to achieve the effect of increasing chemical additives and speeding up the system's drive of the chemical feed pump
Inactive Publication Date: 2015-10-08
CRISWELL DENNY ALLEN
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Problems solved by technology
The treatment of industrial wastewater is a necessary and difficult task common to most, if not all manufacturing facilities.
However, filtration systems require a great deal of maintenance and are subject to clogging or partial clogging, thereby impeding flow through a system.
One great difficulty of this system of wastewater treatment is that, if the wastewater input stream changes appreciably, the additives must be readjusted, thereby requiring additional jar tests.
Furthermore, in many manufacturing environments it is impractical to train personnel to monitor the effluent stream, conduct periodic and frequent jar tests, calculate additive flow rates, make pump adjustments, and carefully monitor incoming stream flow rates in order to maintain the treatment system's operation.
2012 / 0000859), but the results obtained using such systems have been less than satisfactory.
Such system does not provide real time chemical additions.
Thus, while such system, especially with the up-front NTU meter, may cut down the back feed time for providing clarity values to the controller, it uses that time and more due to the need to wait for the completion of the jar tests.
Such delay compromises both the accuracy of any measurements made and the integrity of removal of contaminants from the effluent stream.
Method used
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[0023]An embodiment of the invention obviates the aforementioned problems inherent in the prior art by providing a system and method of wastewater treatment that produces an effluent stream within an acceptable turbidity / pH range without the need for costly and time-consuming jar tests typically practiced in the art.
[0024]Specifically, the invention uses a controller, for example an industrial controller having a microprocessor, data memory, and a plurality of inputs and outputs that interface with various system components, as set forth in greater detail below. The controller is operatively coupled to a turbidity meter, or a plurality thereof, that provides a signal representative of turbidity at a point or points in the effluent stream for determining whether the effluent stream is within an acceptable turbidity.
[0025]A plurality of pumps are provided for supplying a plurality of chemical additives to the wastewater stream to control the turbidity thereof. Each pump is operatively...
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Abstract
A system for treating a wastewater stream produces an effluent having an acceptable level of turbidity. A PID controller is operatively coupled to at least one turbidity meter for monitoring turbidity of the effluent stream. A plurality of chemical treatment additive pumps are provided for adding a plurality of treatment chemicals to the wastewater stream in real time under supervision of the controller, and responsive to monitored turbidity.
Description
BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The invention relates to the treating of wastewater to produce a chemically acceptable effluent stream. More particularly, the invention relates to an automated system and method for treating wastewater that controls contaminant levels of a plurality of contaminants present in the wastewater.[0003]2. Description of the Background Art[0004]The treatment of industrial wastewater is a necessary and difficult task common to most, if not all manufacturing facilities. A vast array of contaminants that are byproducts of manufacturing processes may be removed from the process by a wastewater stream. Accordingly, this wastewater stream carries contaminants in the form of suspended solids that range widely in size, as well as an assortment of liquids, oils, surfactants, polymers, acids, fats, blood, process ingredients, metal salts, total suspended solids (TSS), biological oxygen demand (BOD), chemical oxygen demand (COD), and the like....
Claims
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IPC IPC(8): C02F1/24B03D1/14
CPCC02F1/24B03D1/1431C02F2209/40C02F2209/005C02F2209/11C02F2209/003B01D21/01B01D21/32B03D1/028C02F1/008C02F1/5209C02F1/5245C02F1/56C02F1/66C02F2209/006C02F2209/06C02F2209/10
Inventor CRISWELL, DENNY ALLEN
Owner CRISWELL DENNY ALLEN