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Novel method for culturing and acclimating activated sludge in winter

A technology of activated sludge and new method, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc. The effects of short acclimation time, stable process parameters and simple implementation

Inactive Publication Date: 2014-04-30
GNSG ANHUI HONG SIFANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] (2) Difficult to grasp and operate
[0006] There are many process parameters that need to be controlled, and each parameter is closely related, so it is difficult to cultivate and domesticate

Method used

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  • Novel method for culturing and acclimating activated sludge in winter

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Experimental program
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Effect test

Embodiment Construction

[0035] (1) Cultivation of activated sludge

[0036] ①Put industrial water into the IMC biochemical pool, the water depth is 70% of the pool depth, and the pool water temperature is raised to 30°C with steam; the IMC biochemical pool is placed in municipal sewage dehydrated cake, and the amount added to each pool is 50 tons;

[0037] ② Manually start the IMC pool circulating water pump, blower, and blower inlet valve, blow air into the IMC pool, adjust the air volume at the outlet of the blower, and take a water sample from the IMC pool to analyze CODcr and NH after 20 minutes of aeration. 3 -N;

[0038] ③According to the analysis results, add flour to the IMC pool to make the CODcr reach 500mg / L, and the dosage is calculated as 1.0g CODcr plus 1g flour;

[0039] ④ Supplement nitrogen and phosphorus nutrients to the IMC pool according to the ratio of CODcr:N:P=100:5:1;

[0040]⑤ Manually start the IMC pool circulating pump, blower, and blower inlet valve to blow air into the ...

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Abstract

The invention discloses a novel method for culturing and acclimating activated sludge in winter. The method comprises the following steps: injecting industrial water into IMC biochemical pools, wherein the water depth is 70-80% of the pool depth, and the temperature of pool water is increased to 30-35 DEG C by steam; placing municipal sewage dehydrated sludge cake in the IMC biochemical pools, wherein addition for each pool is 50-60 tons; starting circulating pumps of the biochemical pools for mixing, starting the blowers for aeration, adding flour and alkali, ceasing the blowers for a rest; culturing the sludge according to process parameters in an implementation scheme; after successful propagation of the sludge, starting a sludge acclimation stage; forming multiple stages of A / O in the biochemical pools, wherein a single biochemical pool currently comprises 4 A / O stages, or determining the frequency of A / O according to the quality of sewage; stopping the circulating pumps to reach a precipitation state in the biochemical pools; and draining water in the biochemical pools, and discharging according to standards. The method for culturing and acclimating activated sludge has the advantages of short time for culture and acclimation, simple scheme, stable process parameters, easiness for operation, and low cost for acclimation.

Description

technical field [0001] The method relates to the field of synthetic ammonia wastewater treatment, in particular to a new method for cultivating and acclimating activated sludge in winter. Background technique [0002] The traditional activated sludge cultivation and domestication is to inject air into the wastewater of the biochemical tank and perform aeration, retain the sediment every day, and replace fresh sewage. After doing this for a period of time, a yellowish-brown floc is formed in the sewage, that is, active sludge. sludge. The sewage biological treatment process with activated sludge as the main body is called activated sludge method. [0003] (1) Long training time and high cost [0004] Keep abreast of the COD and dissolved oxygen changes in the biochemical pool at any time, replenish carbon sources and adjust the gas supply in a timely manner; the pH value of the biochemical pool is best controlled between 7--8.5 during commissioning, and find out the cause i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 谢中平王晓华季汝义刘俊王斌马建华曹宗元
Owner GNSG ANHUI HONG SIFANG
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