Control system and process for wastewater treatment

A waste water treatment and fluid technology, applied in water treatment parameter control, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of large system, time delay, not receiving mixing time and mixing energy, etc.
CN101506101AInactive Publication Date: 2009-08-12WORLD WATER TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WORLD WATER TECH
Publication Date
2009-08-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

A system and process is provided for optimizing chemical additions, mixing energy, mixing time, and other variables while treating a contaminated liquid stream. Samples from the contaminated liquid stream are tested to determine the optimal parameter for each variable, including type and amount of the chemicals to be added, chemical sequence, mixing energy, mixing time, temperature, and pressurization. A system of mixers, a flotation chamber, and a dewatering subsystem are designed to achieve optimal turbidity of the wastewater stream. The system can be modified in real-time in response to a continually changing contaminated liquid stream via a controller and set of sensors, valves, and ports.
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Description

Background of the invention

[0001] [Paragraph 1] The present invention relates generally to wastewater treatment. More specifically, the present invention relates to control systems and methods for wastewater treatment, including control of monitoring and adjusting mixing time, mixing energy, and the amount of chemicals in wastewater to optimize waste removal from a constantly changing liquid stream via a unique flotation system system.

[0002] [Paragraph 2] Industrial wastewater treatment presents many challenges to current technologies. Contaminants are usually in the form of suspended solids. Such solids range in size from macroscopic (inches to hundreds of microns) to colloidal (submicron) to nanoscale particles. Immiscible oils and other lipophilic substances (called hydrophobic substances) are also sometimes present and are emulsified (solubilized) with the addition of suitable emulsifiers - surfactants (detergents) or surface-active polymers. Cost-effective, reliab...

Claims

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