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Preparation and application of anaerobic hydrolytic acidification composite bacterium embedded bioactive filler

A technology of hydrolysis, acidification and biological activity, applied in anaerobic digestion treatment, water pollutants, biological water/sewage treatment, etc. The effect of good state, improved stability and increased toughness

Active Publication Date: 2020-07-31
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high technical requirements for the production of mesh carriers, it is difficult to achieve high efficiency in the output of a single machine, resulting in problems in production cost and production efficiency.
[0006] In recent years, we have used the embedding technology in (ZL201410137270.7) to produce hydrolyzed acidified bioactive fillers. We have carried out pilot and productive application tests by using reticulated straight cylindrical hydrolyzed acidified bioactive fillers. During the process of making and using the filler, it is found that the filler has a large room for improvement in the preparation process, manufacturing cost and the complexity of the filler structure.

Method used

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  • Preparation and application of anaerobic hydrolytic acidification composite bacterium embedded bioactive filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Preparation of hydrolytic acidified culture culture

[0026] Take the concentrated excess sludge (water content 97%) of the existing sewage treatment plant, and add the soybean product processing wastewater sediment under the low-intensity stirring condition of 80r / min (adjust the dosage according to the remaining amount of protein to maintain The remaining protein content is 0.2mg / L as the standard, and the sediment is added), and the trace element solution is added at 5mL / L (trace element composition: ZnSO 4 ·7H 2 O: 0.50mg / L; NaMoO 4 2H 2 O: 0.12mg / L; CoCl 2 ·6H 2 O: 0.20mg / L; MnSO 4 ·H 2 O: 0.50mg / L; NiCl 2 ·6H 2 O: 0.70mg / L; CuSO 4 ·5H 2 O: 0.60mg / L; FeCl 3 ·6H 2 (0:0.80mg / L), detect the pH change, control the pH in the range of 6.5-7.0, run continuously for 7 days, dehydrate and concentrate the culture to a water content of 80%, and finally form a hydrolytic acidifying bacteria culture.

[0027] 2. Preparation of filler (1)

[0028] Utilize 90 ℃ of ...

Embodiment 2

[0034] 1. hydrolytic acidification culture culture preparation (same as example 1)

[0035] 2. the preparation of filler (same as example 1)

[0036] 3. Application of hydrolytic acidification active filler (municipal sewage)

[0037] Add 100 suspension balls prepared in 2. to the hydrolytic acidification reactor with an effective volume of 100L filled with filler (1), and finally form a hydrolytic acidification embedded bioactive filler with a filling rate of 20% and a water temperature of 22 ± 3 °C, HRT= 2h , the pH is 6.8-7.3, the raw water is municipal sewage, the reactor runs continuously 24 hours a day, and the ammonia nitrogen conversion output effect of the reactor is measured every day. The test results of the effluent showed that the release concentration of ammonia nitrogen was stable at about 7.0 mg / L after 13 days of culture recovery, and the organic nitrogen was fully converted and released. The bioactive filler reaction tank was continuously operated for nearl...

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Abstract

The invention discloses preparation and application of an anaerobic hydrolytic acidification composite bacterium embedded bioactive filler, and belongs to the field of sewage and wastewater treatment.By utilizing advanced control means, the hydrolytic acidification composite bacteria are optimized and intensively cultured, then the bacteria embedding technology is used for manufacturing the hydrolytic acidification composite bacteria embedded bioactive filler, the filler is used for achieving biological treatment of sewage and waste water, and the result is that the technological process is simple, high in efficiency and free of complex control processes.

Description

Technical field: [0001] The invention belongs to the field of sewage and wastewater treatment, and in particular relates to the preparation and application of an anaerobic hydrolysis acidification composite bacteria-embedded bioactive filler. Background technique: [0002] In the treatment of nitrogen-containing pollution and wastewater, organic matter, especially protein, contains a large amount of organic nitrogen. These organic nitrogen must pass through a relatively complete anaerobic biochemical process. The core is to convert organic nitrogen into ammonia nitrogen in the process of hydrolysis and acidification, so that it can be used in subsequent treatment. This part of the nitrogen can be removed. The activated sludge in the single sludge system of the traditional activated sludge method maintains the sludge (bacteria) in the entire system through the sludge return method, and the activated sludge returned to the anaerobic area is passed through anoxic, aerobic and s...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/34C02F101/38
CPCC02F3/2806C02F3/348C02F2101/38
Inventor 杨宏
Owner BEIJING UNIV OF TECH
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