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Intensified sludge treatment method of activated sludge and wastewater treatment technology

A technology for sewage treatment and sludge disposal, applied in water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, sludge treatment, etc. Dehydration to 60% moisture content, poor dehydration effect, etc., to achieve the effect of easy operation, simple operation and unique process

Active Publication Date: 2013-03-20
大连迈克环境科技工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Intensified sludge treatment method of activated sludge and wastewater treatment technology
  • Intensified sludge treatment method of activated sludge and wastewater treatment technology

Examples

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Embodiment 1

[0018] A method for intensifying sludge disposal in an activated sludge sewage treatment process, involving a sewage biological treatment process-sludge from a constant-water-level sequencing batch reactor. The rapidly proliferating microbial population of zone C1 (formerly known as zone 2), the second part of the fast-settling sludge (hereinafter referred to as part B) is composed of the microbial population with faster settling ability.

[0019] First, the above two parts of sludge are separated: a pool is divided into 3 functional zones with constant water level SBR sewage sludge treatment system, decanter E2 and aerator E1 are installed in zone 2, and zone 3 receives decanter water through decanter E1. The treated effluent from the second zone discharged from the decanter, after the first decanting is over, restart the fan P1 of the constant water level SBR to aerate the sludge again to suspend the sludge again. Carry out the decanting and sludge removal process, and disch...

Embodiment 2

[0022] According to the treatment method of Example 1, the dewatered sludge was further sterilized respectively, the A part contained a small amount of eggs and was rapidly sterilized, and the B part was longer than the A part due to the large amount of sludge. The separately disinfected biological sludge is mixed with the sludge, and the solid content is more than 40%.

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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, a sewage biological treatment process is introduced. The sewage flows into 3 functional areas divided by hydraulic sails, and the sewage is aerated in the second area. Proliferate to form activated sludge, and the amount of activated sludge depends on the amount of carbon sources contained in the sewage that the microorganisms can utilize. The treated effluent is discharged into rivers and lakes, and the resulting activated sludge must also be fully treated for further use in agricultural production, energy production or other resource applications. The conventional method for treating sludge with a moisture content of up to 98% is: traditional mechanical dewatering methods such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/14
Inventor 詹技灵A·戴德里奇斯
Owner 大连迈克环境科技工程有限公司