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Anaerobic acclimation-culturing process and device for sludge

A domestication culture and anaerobic culture technology, applied in the field of sludge anaerobic domestication culture process and equipment, can solve the problems of sludge floating, poor aerobic sludge settling performance, start-up failure, etc., and achieve the effect of rapid start-up

Inactive Publication Date: 2010-09-22
CHINA COAL ENERGY HEILONGJIANG COAL CHEM
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Problems solved by technology

However, the anaerobic process is often used to treat high-concentration industrial wastewater or sewage containing toxic and harmful substances. The sedimentation performance of the aerobic sludge is poor, and the adaptability to the water quality treated by the anaerobic process is poor. The aerobic residual sludge is used to inoculate the anaerobic sludge. process, there will be problems such as difficulty in starting the system, sludge floating and loss, etc., which will cause serious start-up failure

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  • Anaerobic acclimation-culturing process and device for sludge
  • Anaerobic acclimation-culturing process and device for sludge

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Embodiment

[0038] First settle the aerobic sludge in the sludge settling tank for 20 hours. Then, after removing the supernatant, transfer the sludge with high concentration settled at the bottom to the anaerobic sludge acclimatization tank until the sludge concentration reaches 20000mg / L, and allow the sludge to continue to settle for 24 hours in an anaerobic environment.

[0039] After the sludge has been settled and buffered, it begins to be domesticated and cultivated, and the influent is introduced into the anaerobic sludge domestication tank. In the first stage, the sludge is domesticated and cultivated by intermittent water inflow, and the COD concentration in the influent is controlled at 1000mg / About L, the influent is circulated in the anaerobic sludge acclimation tank, the flow rate is 20t / h, the influent residence period is 24h, and the operation is 30d. element, where Ca 2+ Dosing 20mg / L, Fe 2+ Dosing 5mg / L, Co 2+ Dosing 0.05mg / L, Ni 2+ Dosing 0.05mg / L, Mn 2+ , S 4+ ,...

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Abstract

The invention provides an anaerobic acclimation-culturing process for sludge, which comprises the following steps of: a) settling aerobic sludge; b) putting the settled aerobic sludge into an anaerobic acclimation-culturing device and settling the settled aerobic sludge continually; and c) introducing water into the anaerobic acclimation-culturing device to perform anaerobic acclimation culturing on the settled sludge. The invention also provides the anaerobic acclimation-culturing device for the sludge, which comprises a sludge settling device and an anaerobic sludge acclimating device connected with the sludge settling device. The anaerobic acclimation-culturing process and the anaerobic acclimation-culturing device for the sludge provided by the invention well solve the problems of an acclimation-culturing process in which aerobic active sludge is taken as an anaerobic technical sludge source and realize successful and rapid startup of an anaerobic process.

Description

technical field [0001] The invention relates to the technical field of sewage biochemical treatment, in particular to a sludge anaerobic domestication cultivation process and device. Background technique [0002] Due to its high pollutant load, stable process operation, low energy consumption, and the ability to treat high-concentration sewage and sewage containing toxic and harmful substances, the anaerobic process has been more and more widely used, especially in the treatment of high-concentration industrial wastewater. The feasibility and effectiveness of the anaerobic process have been fully confirmed. However, in the engineering practice of a large number of high-efficiency anaerobic reactors in China, many problems are still encountered. The sludge concentration required for anaerobic biological treatment is high, and the sludge in the reactor grows slowly. Therefore, the start-up process of the anaerobic treatment unit The amount of inoculated sludge required is lar...

Claims

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Application Information

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IPC IPC(8): C02F3/28
Inventor 曲江张德胜吴昌祥李龙家金刚石李生敏周志远王俊龙于志坚韩洪军王伟
Owner CHINA COAL ENERGY HEILONGJIANG COAL CHEM
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