Side biological treatment process for processing sludge-digestion liquid by adopting SNAD-MBBR technology as core

A sludge digestion solution and core treatment technology, applied in the field of environmental engineering, can solve the problems affecting the start-up speed and bacterial activity of the anammox reactor, the long time of sludge doubling, and the limitation of wide application, etc., to maintain long-term stable operation , Improve oxygen utilization rate, low operating cost

Inactive Publication Date: 2018-12-11
大连海川博创环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Anammox bacteria are easily affected by the environment and the sludge doubling time is long, which largely limits the wide application of this technology.
Especially when dealing with actual wastewater, complex water quality and fluctuations in water volume will affect the start-up speed and bacterial activity of the anammox reactor
Therefore, the current nitrification and anammox technologies face application challenges

Method used

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  • Side biological treatment process for processing sludge-digestion liquid by adopting SNAD-MBBR technology as core
  • Side biological treatment process for processing sludge-digestion liquid by adopting SNAD-MBBR technology as core

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The side biological treatment system of the sludge digestion liquid includes the dosing pump 1, the coagulation sedimentation tank 2, the primary sedimentation tank 3, the SNAD-MBBR unit 4 and the secondary sedimentation tank 10 connected in sequence, in the coagulation sedimentation tank 2 An agitator 13 is installed inside to mix the coagulant and the sludge digestion liquid. The top of the primary sedimentation tank 3 is provided with an overflow weir, and the bottom is in the shape of a cone. A mud scraper 11 is provided in the primary sedimentation tank 3. At the bottom of the primary sedimentation tank 3, there is a sludge discharge pipeline 9 used to discharge the sludge separated by the mud scraper 11 out of the primary sedimentation tank 3. The effluent from the primary sedimentation tank 3 overflows to the SNAD-MBBR unit 4, where 4 is equipped with heater 5, at the bottom of SNAD-MBBR unit 4 is equipped with perforated aeration pipe 6, inside SNAD-MBBR unit 4 is...

Embodiment 2

[0027] The side biological treatment system of the sludge digestion liquid, including the dosing pump 1, the coagulation sedimentation tank 2, the primary sedimentation tank 3, the collection well A 14, the SNAD-MBBR unit 4, the secondary sedimentation tank 10 and the collection well B connected in sequence 15. The sludge digestion liquid is stored in the digestion liquid storage tank, and the sludge digestion liquid flows into the coagulation sedimentation tank 2 through the pipeline, and the coagulation sedimentation tank 2 is equipped with a stirrer 13 for mixing the coagulant and the sludge Digestion liquid, the top of the primary sedimentation tank 3 is provided with an overflow weir, and the bottom is in the shape of a cone. A mud scraper 11 is provided in the primary sedimentation tank 3, and a mud drain pipeline 9 is provided at the bottom of the primary sedimentation tank 3 for The sludge separated by the scraper 11 is discharged out of the primary sedimentation tank 3,...

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Abstract

The invention relates to a side biological treatment process for processing a sludge-digestion liquid by adopting an SNAD-MBBR technology as a core. The side biological treatment process mainly comprises two parts of coagulating sedimentation and SNAD-MBBR. Firstly, the sludge-digestion liquid enters a coagulating sedimentation tank, and a coagulant is fed to carry out flocculation reaction; thenwater without suspended matters discharged through a primary sedimentation tank enters a biological denitrification unit, wherein during the process, an organic carbon source and most nitrogen remained in the sludge-digestion liquid are effectively removed; finally, the treated sludge-digestion liquid is discharged into a sewage treatment tank. The side biological treatment process provided by theinvention has the advantages of low operation energy consumption, high treatment efficiency, low secondary pollution, small occupied area and the like, meanwhile, the nitrogen load impact on the sewage treatment plant is reduced, and the operating cost of a water plant is reduced. The side biological treatment process provided by the invention can become the preferred process for the side biological treatment of wastewater with high ammonia-nitrogen and low carbon nitrogen ratio.

Description

Technical field [0001] The invention belongs to the field of environmental engineering, and particularly relates to a biological denitrification process and device for wastewater with high ammonia nitrogen and low carbon to nitrogen ratio. Background technique [0002] The anaerobic digestion of surplus sludge in urban sewage treatment plants is an effective measure for the stabilization of urban surplus sludge. This technology has the advantages of energy recovery, waste reduction and harmlessness. In the anaerobic digestion process, anaerobic bacteria decompose the organic matter in the sludge to generate methane gas, which is recovered as energy. At the same time, the deamination of microorganisms will release nitrogen (mainly ammonia nitrogen and a small amount of organic nitrogen). After dehydration, most of the nitrogen will remain in the sludge digestion solution, so the nitrogen content in the digestion solution is very high (500-2000mg / L). The sludge digestion liquid p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16
CPCC02F1/5281C02F3/30C02F9/00C02F2101/16C02F2301/08
Inventor 王刚徐晓晨靳文尧杨凤林
Owner 大连海川博创环保科技有限公司
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