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Floated solids separation

A floating body and solid technology, applied in the direction of solid separation, separation method, filtration separation, etc., can solve the problems of increasing transportation cost, difficult and expensive removal of free water, etc.

Inactive Publication Date: 2014-01-15
WORLD WATER WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Buoys are often consigned to a separate location for further processing, but excess water increases shipping costs
In addition, the process of moving the float, either by gravity or by the pump, can shear the float and make free water removal more difficult and expensive
This additional processing adds additional space and energy requirements to the liquid-solid separation process

Method used

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  • Floated solids separation
  • Floated solids separation
  • Floated solids separation

Examples

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Embodiment Construction

[0018] "Top sludge," "sludge," or "float" is a mixture of separator, air, and water that has been floated to a surface by microbubbles using a DAF system. Isolates can include total suspended solids, which include fats, oils, grease, insoluble impurities, or any other solids suspended in water or wastewater. It is advantageous to separate the solids from free water before further processing.

[0019] figure 1 and figure 2An embodiment of a modified dissolved air flotation (DAF) system 1 is shown. DAF system 1 includes air saturation system 2 , separation unit 3 , and rotary screen assembly 4 . The air saturated system 2 produces white foam by saturating atmospheric air into the water. The air saturation system 2 has a white foam outlet 18 from which the white foam exits. The separation unit 2 has two main compartments, a separation vessel 5 and an effluent tank 6 . Liquid / solid separation takes place in the separation vessel 5 and the purified liquid moves into the effl...

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PUM

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Abstract

A method and apparatus for removing solids separated from wastewater, or algae from algal solution, using an improved dissolved air flotation system that incorporates a slowly rotating cylindrical sieve at the end of an upward sloping beach to drain free water from the float, which has been pushed up the beach and onto the rotating sieve, and a doctor blade that removes the thickened float from the rotating sieve is disclosed.

Description

field of invention [0001] The present invention relates to the use of an improved dissolved air flotation (DAF) system to remove solids that have been separated from aqueous slurries, including wastewater or algae solutions, and in particular, to enhancing the removal of solids from dissolved air flotation systems Dryness process and equipment. Background technique [0002] Dissolved air flotation (DAF) systems have been used for over 100 years. DAF systems are used to separate total suspended solids (TSS) - fats, oils and greases (FOG) and other insoluble impurities from wastewater. DAF removes these solids suspended in water using microbubbles that interact with particles to cause them to float and the floating particles are subsequently skimmed and separated. A variety of designs and arrangements of DAF exist, including trade names such as BAF, CAF, EAF, and GEM. Generally, DAF systems have technology that introduces micro-bubbles into the water stream, which causes su...

Claims

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Application Information

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IPC IPC(8): B01D35/05
CPCB03D1/1431B03D1/1462C02F1/24C02F1/52C02F11/121C02F2101/32C02F2301/066B01D21/0027
Inventor K·布思M·科思比M·福斯哈格S·波D·施莱格尔
Owner WORLD WATER WORKS
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