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Biological treatment method and device for dairy wastewater

A dairy wastewater and biological treatment technology, applied in the field of biological treatment of dairy wastewater, can solve the problems of unstable biofilm adhesion, large reactor volume, complicated operation, etc., so as to improve impact resistance and metabolism, and reduce backwashing. Number of times, the effect of promoting adhesion

Pending Publication Date: 2022-03-22
PEKING UNIV
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  • Application Information

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Problems solved by technology

However, the traditional biological treatment process has disadvantages such as complex operation, large reactor volume, the need to set up a secondary sedimentation tank, and unstable biofilm attachment, which limit the further application of these technologies

Method used

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  • Biological treatment method and device for dairy wastewater
  • Biological treatment method and device for dairy wastewater

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specific Embodiment approach

[0061] Adopt the present invention to process the waste water of a dairy waste water treatment plant in my country's Heilongjiang Province, the specific implementation is as follows:

[0062] (1) Loading of the carrier: use functional polyurethane material as the carrier, cut into cubes with a side length of 1-2cm before use, wash with clean water, dry at 60°C, and put them in at a filling rate of 80% after natural cooling. 15L reactor.

[0063] (2) Dosing microorganisms: compound microbial reagents at 1g L -1 Dosing. The microorganisms used are complex microorganisms containing dominant bacterial genera such as Acinetobacter sp., Fusibacter sp., Nannocystissp., and norank_f_NS9_marine_group sp. . The microbial reagent used is FZ35M, purchased from Beijing Fengze Lvyuan Environmental Technology Co., Ltd., which is a commonly used commercial product.

[0064] (3) Reactor water inlet adjustment: The bottom of the reactor is connected to the water inlet pipe, and the dairy wa...

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Abstract

The invention discloses a biological treatment method and device for dairy wastewater. According to the method, carbon and nitrogen in the dairy wastewater are removed mainly under the action of dominant bacteria represented by acinetobacter, and the method sequentially comprises the following steps: filling a carrier, adding microorganisms, adjusting water inlet of a reactor, adjusting aeration of the reactor, domesticating the microorganisms and treating the dairy wastewater. The method can quickly remove pollutants in the dairy wastewater, shortens the wastewater treatment period, is low in repair cost, does not cause secondary pollution, is simple and easy to implement, and is suitable for treatment of dairy wastewater of various scales.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a biological treatment method for dairy waste water. Background technique [0002] The food industry is considered to be one of the three industries that consume the most water resources. The improvement of people's living standards has increased the demand for milk and dairy products, thereby promoting the development of the dairy industry. During the production of dairy products, a large amount of wastewater will be generated, such as washing wastewater, production circulating water (condensation, heating, etc.) and domestic water in the factory area. The concentration of pollutants in different wastewaters also varies, depending on the type of industrial process, production rate and seasonal changes, etc. Dairy wastewater is mainly composed of biodegradable organic matter such as starch, sugar, and protein, and has the characteristics of high organic matter content, strong bi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/34C02F103/32C02F101/30C02F101/16
CPCC02F3/108C02F3/109C02F3/34C02F2103/327C02F2101/30C02F2101/16Y02W10/10
Inventor 叶正芳陈柳州赵泉林
Owner PEKING UNIV