A reaction device and method for producing pha by mainstream recycling of organic matter in beer wastewater

A technology for brewing wastewater and organic matter, applied in chemical instruments and methods, food industry wastewater treatment, water aeration, etc., can solve problems such as effective recovery of unwatered resources, and achieve the effect of promoting wide application, reducing emissions, and alleviating the greenhouse effect.

Active Publication Date: 2022-05-03
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this process does not effectively recover water resources

Method used

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  • A reaction device and method for producing pha by mainstream recycling of organic matter in beer wastewater
  • A reaction device and method for producing pha by mainstream recycling of organic matter in beer wastewater

Examples

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and examples, but the present invention is not limited to the following examples.

[0029] In this example, wastewater from a brewery in Beijing was used as the research object, and the water quality characteristics are shown in Table 1.

[0030] Table 1 Composition and main properties of brewery wastewater

[0031]

[0032] Carry out according to the process step method in the summary of the invention.

[0033] The effective volume of the first aeration tank is 8L, the effective volume of the second aeration tank is 27L, the influent flow rate is 1.65L / h, the controlled aeration rate is 120L / h, the daily residual sludge volume is 17.5L, and the sludge age is 2d. When the system runs stably, the maximum PHA accumulation capacity of the sludge is 58.77%, and the daily output of PHA is 64.57g / d. The COD effluent concentration is 60-100mg / L, and the removal rate is 94....

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Abstract

The invention relates to a reaction device and a method for producing PHA by mainstream recycling of organic matter in beer wastewater, and belongs to the technical field of sewage treatment and resource utilization. The method includes the following steps: (1) pretreatment: grid filtration; (2) anaerobic acidification: converting organic matter in brewery wastewater into volatile fatty acids; (3) aerobic biological treatment, and simultaneously enriching PHA-accumulating flora; (4) Advanced oxidation advanced treatment to remove organic matter; (5) Production of PHA by batch fermentation of excess sludge. The method realizes the recovery and production of PHA in the mainstream process while treating the beer wastewater, and the system does not generate excess sludge. The recovery efficiency of organic matter and the removal rate of COD in wastewater are high, and the PHA produced can bring certain economic benefits to the sewage plant.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and recycling technology. In particular, it relates to a method for treating brewery wastewater and recovering PHA as a resource. Background technique [0002] Beer wastewater is mainly produced in the saccharification, fermentation, filling and other processes in the beer production process. It is a high-concentration organic wastewater with a COD concentration of 1800-3500mg / L. It does not contain toxic and harmful substances and has good biochemical properties. In recent years, in the field of high-concentration organic wastewater, resource recovery has become one of the research hotspots, and organic matter in wastewater is one of the important renewable energy sources. Brewery wastewater is the main high-concentration organic wastewater, and the recycling of organic matter in water is a major measure to realize the application of sewage resources. The traditional brewery wastewater...

Claims

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Application Information

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IPC IPC(8): C02F9/14C12P7/625C02F103/32C02F101/30
CPCC02F9/00C12P7/625C02F1/001C02F1/66C02F7/00C02F3/30C02F2001/007C02F2101/30C02F2103/325
Inventor 崔有为王好韩黄基霖
Owner BEIJING UNIV OF TECH
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