A method for treating sewage by copolymerization air flotation
A technology for copolymerization of air flotation and sewage, applied in flotation water/sewage treatment, multi-stage water treatment, chemical instruments and methods, etc., can solve the problems of long flocculation process, low effective utilization rate of microbubbles, short contact time, etc. Achieve the effects of increasing the probability of collision, strengthening the flocculation process and effect, and accelerating the coagulation speed
Active Publication Date: 2016-05-25
SHANDONG JIANZHU UNIV
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Problems solved by technology
However, the traditional air flotation technology adopts the method of one-time reflux of dissolved air water, that is, the raw water is fully coagulated and then refluxed into dissolved air water. Microbubbles do not participate in the coagulation process of particles. The collision contact lag and short contact time are equivalent to the secondary flocculation of microbubbles and flocs. The efficiency is not high, and the effective utilization rate of microbubbles is low
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[0030] One: The structure of the air flotation clarifier
[0031] The air flotation clarifier of the present invention is as figure 1 and figure 2 As shown, the air flotation clarifier consists of a primary flocculation zone 3, a secondary flocculation zone 7, an air flotation contact zone 8, a solid-liquid separation zone 9, a clear water drainage zone 10, and a sludge return zone.
[0032] The specific structure is: the upper part of the overall structure of the air flotation clarifier is cylindrical, and the lower part is conical.
[0033] The primary flocculation zone 3 is located in the lower part of the air flotation clarifier, which is conical and equipped with a stirrer 6 and a stirring paddle 4 , as well as a water inlet pipe 1 and a water inlet distribution area 2 .
[0034] Above the primary flocculation zone, a secondary flocculation zone 7, an air flotation contact zone 8, and a solid-liquid separation zone 9 are distributed sequentially from the inside to th...
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The present invention relates to a method for treating sewage, in particular to a method for treating sewage by copolymerization air flotation which integrates clarification and air flotation. Secondary flocculation zone, for contact coagulation and copolymerization air flotation; (3) Then enter the air flotation contact zone, the air-carrying flocs are then contacted and coagulated with the dissolved air water released by the releaser, and the air-carrying flocs are in full contact with the microbubbles , forming copolymerized macrobubble flocs; (4) entering the solid-liquid separation zone. Effectiveness of the present invention: the organic combination of the traditional mechanical agitation clarifier and the air flotation process, including the organic combination of mixing, primary flocculation, secondary flocculation, air flotation, sedimentation and sludge reflux contact flocculation, etc., dissolved air and water The micro-bubbles directly participate in the coagulation and co-polymerize with the flocs, and the bubbles are sandwiched between the flocs, which not only fully exerts the coagulation effect of the bubbles, but also firmly adheres the bubbles to the flocs, forming a "copolymerization air flotation".
Description
technical field [0001] The invention relates to a sewage treatment method, in particular to a method for treating sewage by a copolymerization air flotation method integrating clarification and air flotation functions. Background technique [0002] At present, the problem of reservoir water pollution is becoming more and more prominent, among which algae pollution is particularly serious. At present, the reservoir water tends to have the characteristics of high algae in summer and low temperature and low turbidity in winter. As the degree of eutrophication of water sources increases year by year, algal blooms are becoming more and more serious, especially in spring and autumn when the temperature changes greatly, algae outbreaks occur from time to time, posing a certain threat to the operation of water plants and water supply safety. The density of algae is small, and it is difficult to effectively remove it by traditional coagulation, sedimentation, and filtration processe...
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IPC IPC(8): C02F9/04
CPCC02F1/24C02F1/52C02F9/00C02F2301/08
Inventor 王永磊陈文娟张克峰李梅贾瑞宝宋武昌楚广诣孔令华贾伟建
Owner SHANDONG JIANZHU UNIV