Intensified sludge treatment method of activated sludge and wastewater treatment technology

Abstract

The invention relates to a sludge treatment method produced by a wastewater biological treatment technology. An intensified sludge treatment method of an activated sludge wastewater treatment technology relates to a wastewater biological treatment technology-sludge of a constant water level sequencing batch reactor. A first part of low-speed precipitated biological sludge consists of a plurality of micropopulations which quickly propagate in a reaction region, and a second part of high-speed precipitated biological sludge consists of a plurality of micropopulations which precipitate more quickly; and the two parts of sludge are separated from each other, and then the sludge is deeply dehydrated again respectively. The method is unique in technology and simple and easy to operate; a third region of a pool is used for receiving treated water which is discharged out of a sludge collecting device in a second region, and simultaneously, the low-speed precipitated sludge is separated from the high-speed precipitated sludge in the second region by the device; and the equipment investment is not added when the treated water quantity and the water-discharging index of the constant water level SBR (sequencing batch reactor) technology are guaranteed to meet the requirement, so that the high-speed precipitated sludge is mechanically dehydrated in an intensifying way finally.

Description

technical field [0001] The invention relates to a sludge treatment method produced by a sewage biological treatment process, in particular to a method for strengthening sludge disposal. Background technique [0002] Based on the European 1132248 patent and the Chinese 200720009520.4 application for a sewage biological treatment process, the sewage flows into 3 functional areas divided by the hydraulic sail, and the sewage is aerated in the 2 area, the dissolved sewage pollutants are degraded by microorganisms, and the microorganisms continue Proliferation forms activated sludge, and the amount of activated sludge depends on the amount of carbon source contained in the sewage that microorganisms can use. The effluent of the treated sewage is discharged into rivers and lakes, and the activated sludge produced must also be fully treated to be further used in agricultural production, energy production or other resource applications. The conventional method of treating sludge wi...

AI Technical Summary

Problems solved by technology

The second part of sludge can be dehydrated to a water content below 60% through enhanced mechanical dehydration, while the first part of sludge is much worse in dewatering performance. The traditional sludge dewatering process is to dehydrate the mixture of the two parts of sludge together. The result Although the first part of sludge is only a small part of the total amount of sludge, a large amount of sludge is full of adsorption water and capillary water, resulting in poor dehydration effect, and the final solid content can only be 25%-30%.

Therefore, even if the two parts of sludge are mixed and dehydrated in the same process, it still cannot achieve the goal of dewatering to a moisture content of 60% by conventional dehydration methods

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