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Method for processing food processing wastewater by adopting facultative membrane bioreactor and facultative membrane bioreactor

A membrane bioreactor, food processing wastewater technology, applied in aerobic and anaerobic process treatment, food industry wastewater treatment and other directions, can solve the problems of high energy consumption, unsatisfactory ammonia nitrogen removal effect, high operating cost, and achieve treatment efficiency High, simplified water treatment process engineering, small footprint

Inactive Publication Date: 2014-06-18
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional aerobic MBR process is not ideal for the removal of ammonia nitrogen, consumes a lot of energy, and has high operating costs, which are restricted to a certain extent in engineering applications.

Method used

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  • Method for processing food processing wastewater by adopting facultative membrane bioreactor and facultative membrane bioreactor
  • Method for processing food processing wastewater by adopting facultative membrane bioreactor and facultative membrane bioreactor
  • Method for processing food processing wastewater by adopting facultative membrane bioreactor and facultative membrane bioreactor

Examples

Experimental program
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Effect test

Embodiment 1

[0033] In this embodiment, the method of the present invention for treating food processing wastewater using a facultative membrane bioreactor is used to treat pastry food processing wastewater. The processing scale is 50t / d, and the main process flow is: food processing wastewater→pretreatment→ Adjusting tank → facultative membrane bioreactor → effluent.

[0034] see Figure 2 ~ Figure 4 , this embodiment adopts a facultative membrane bioreactor, including biochemical reaction tank II and the membrane module 3 installed therein and the aeration head device 5, the aeration head device 5 is arranged under the membrane module 3, and the high The preliminarily treated wastewater from the tank I is transported to the biochemical reaction tank II through the water pipe with the water inlet valve 1 and the flow meter 2, and the air pump 7 is set outside the biochemical reaction tank II, and the air pump 7 passes through the water tank with the air valve 6 The air pipeline of the ai...

Embodiment 2

[0045] This embodiment is basically the same as Embodiment 1, especially in that:

[0046] In this embodiment, the method for treating food processing wastewater using a facultative membrane bioreactor comprises the following steps:

[0047] a. same as embodiment one;

[0048] b. same as embodiment one;

[0049] c. In the reaction zone 10 in the biochemical reaction tank II, a bacterial phase form in which facultative bacteria are the main form, and aerobic and facultative bacteria coexist, forming a facultative membrane biological reaction purification system;

[0050] d is the same as in Example 1.

[0051] In this embodiment, facultative bacteria are the main form, and aerobic and facultative bacteria coexist to form a facultative membrane biological reaction purification system, which can more effectively biochemically treat sewage and improve sewage treatment efficiency.

Embodiment 3

[0053] This embodiment is basically the same as the previous embodiment, and the special features are:

[0054] In this example, see Figure 5 , water is transported between the biochemical reaction tank II and the clear water tank III through a mixed parallel pipeline system formed by the first water outlet pipeline and the second water outlet pipeline, after the treatment in the biochemical reaction tank II The clean water enters the clean water tank III through the pre-first control valve G1 and the rear first control valve K1 set on the first outlet pipeline in turn, and the clean water treated in the biochemical reaction tank II is returned to the tank in turn. It can enter the clear water pool III through the second outlet pipeline with a pre-installed second control valve G2 and a rear-installed second control valve K2 at one time, the first outlet pipeline and the second outlet pipeline There is also a connecting pipe between them, so that the clean water can enter th...

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Abstract

The invention discloses a method for processing food processing wastewater by adopting a facultative membrane bioreactor. By adopting the method, pretreatment is carried out on the food processing wastewater to remove coarse impurities and suspended solids in the wastewater, and then the wastewater enters a regulating reservoir to adjust the water quality and quantity; the wastewater enters the facultative membrane bioreactor to carry out biological treatment, and the wastewater continuously and alternatively passes through an aerobic zone, a facultative region and an anaerobic zone inside the reaction region in the facultative membrane bioreactor, so that he anaerobic ammonia oxidation denitrification is achieved when biodegradation and transformation are carried out on pollutants; the processed clean water is reused or discharged. The invention also provides the facultative membrane bioreactor. By adopting the method and the facultative membrane bioreactor, the water treatment process engineering is simplified, the equipment is more compact and concentrated, small in floor area, high in biochemical treatment efficiency of organic sewage, and small in yield of residual organic sludge, not only can the effluent be discharged up to the emission standard, but also near zero emission of the residual organic sludge can be achieved, and synchronous reuse of sewage treatment can be achieved.

Description

technical field [0001] The invention relates to a method for treating high-concentration organic wastewater, in particular to a method for treating food processing wastewater by using a membrane bioreactor, which is applied in the technical field of wastewater biological treatment. Background technique [0002] Food industry wastewater mainly comes from three production sections: raw material cleaning section, production section and forming section. In the first stage, a lot of sand, leaves, skins, phosphorus, meat, and hair enter the wastewater, which makes the wastewater contain a large amount of suspended solids; Part of it enters the wastewater, which makes the wastewater contain a large amount of organic matter; in the third stage, due to the addition of various food additives, part of it will be lost into the wastewater during the actual operation, resulting in the complexity of the chemical composition of the wastewater. [0003] Due to the wide variety of food and w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F103/32
Inventor 刘华琼刘晓艳李红兵王倩顾玲锋陈婷茹张新颖
Owner SHANGHAI UNIV
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