A treatment method for all activated sludge resources and zero discharge
A technology of activated sludge and treatment methods, which is applied in the direction of sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of failure to fully utilize resources, failure to avoid secondary pollution, failure To achieve zero discharge and other issues, to achieve the effects of easy absorption by animals, easy automatic control, and fast dehydration
Active Publication Date: 2011-12-21
刘文治 +1
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Problems solved by technology
All the remaining activated sludge extracted from microbial protein has not been treated, and all resources have not been utilized, secondary pollution has not been avoided, and zero emissions have not been achieved.
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[0038] A treatment method for zero discharge of all activated sludge resources, comprising the following steps:
[0039] 1. Leaching: Put the activated sludge into the leaching tank, add water 6 times the weight of the activated sludge, and use ultrasonic leaching with a frequency of 45KHz. During ultrasonic leaching, add alkali to control pH8-10, and ultrasonic The leaching temperature is 60°C, and the time is 5 minutes; after ultrasonic leaching, continue to leaching by mechanical stirring, the temperature of mechanical stirring leaching is 60°C, the stirring speed is 20-80 rpm, and the time is 20 minutes -2 hours; get extract A;
[0040] 2. Separation: Precipitate and filter the extract A obtained in step 1 to obtain deproteinized activated sludge and protein sol; extract A is first filtered and separated with a microporous membrane series ultrafiltration membrane, and the concentration factor is 8 times , the pump pressure is 0.02MPa, the filtration rate of microporous me...
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Abstract
The invention discloses a full recycling and zero discharge treatment method of activated sludge remained after biochemical treatment of urban sewage and industrial organic wastewater, which belongs to the fields of solid waste treatment and resource regeneration. The method comprises the following steps: firstly, microprotein is leached through breaking the wall by using ultrasonic wave and a mechanical stirring method, and the microbiological feed protein additive is obtained after membrane separation concentration, vacuum thin-film evaporation concentration and impinging stream drying; and heavy metal in the rest deproteinized activated sludge is removed through chemical hydrolysis to obtain ferrite, and finally, the deproteinized sludge which is subject to heavy metal removal is prepared into organic fertilizer, thus the purposes of completely harmless treatment, full recycling, no secondary pollution and zero discharge without remains are further achieved.
Description
technical field [0001] The invention relates to the field of solid waste treatment and resource regeneration, in particular to a treatment method for all the remaining activated sludge produced by biochemical treatment of urban sewage and organic industrial wastewater into resources and zero discharge. Background technique [0002] The traditional treatment methods for the remaining activated sludge produced by the biochemical treatment of urban sewage and organic industrial wastewater are high-temperature anaerobic digestion and composting fermentation, which rely on the natural microorganisms in the activated sludge to decompose the organic matter in the activated sludge. degraded, converted into greenhouse gases, CH 4 , CO 2 , CO, H 2 , NO X , SO 2 and malodorous gases; inorganic sulfur, H 2 Although S and organic sulfur, HCN, organic amines, and organic substances containing aldehydes and ketones have been reduced, they will cause secondary pollution, parasitize mos...
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IPC IPC(8): C02F11/00C05F7/00
CPCY02A40/20
Inventor 刘文治宋荟
Owner 刘文治