Wastewater treatment method, and cross-flow membrane bioreactor ultrafiltration system used therein

A bioreactor and ultrafiltration system technology, which is applied in the field of cross-flow membrane bioreactor ultrafiltration system, can solve the problems of popularization and use of catering in difficult urban areas, poor catering wastewater treatment effect, and difficulty in meeting the needs of catering wastewater treatment. The effect of activated sludge concentration, cost saving and energy saving

Active Publication Date: 2019-04-30
广州市世来至福科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in practice, for catering wastewater, simple oil separation devices or biochemical treatment devices are mostly used. Due to some problems in terms of economy, energy consumption, treatment effect and land occupation, it is difficult to promote the use in urban catering
[0004] Moreover, the conventional wastewater treatment process has a poor treatment effect on catering wastewater, and it is difficult to adapt to the daily large-scale catering wastewater treatment in terms of processing flux (the total amount of treatment per unit time) or decontamination effect (such as COD reduction value). need

Method used

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  • Wastewater treatment method, and cross-flow membrane bioreactor ultrafiltration system used therein
  • Wastewater treatment method, and cross-flow membrane bioreactor ultrafiltration system used therein
  • Wastewater treatment method, and cross-flow membrane bioreactor ultrafiltration system used therein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A cross-flow membrane bioreactor ultrafiltration system, such as Figure 1-3 As shown, it includes: ceramic membrane group 1000, spray device 2000, aerobic tank 3000, liquid system, central control system and flexible ceramic membrane filter device 6000.

[0053] The ceramic membrane group includes a ceramic substrate for the attachment and growth of microorganisms, the ceramic substrate is vertically arranged, and the surface of the ceramic substrate is provided with a plurality of pores, and at least one substrate pipeline is arranged inside the ceramic substrate, and the plurality of pores and The substrate is plumbed, as Figure 4 shown. It can be understood that the ceramic substrate can be a conventional hollow ceramic plate.

[0054] In this embodiment, the ceramic membrane group also includes a number of detachable assembled box-type ceramic membrane boxes, for example, including a frame that surrounds and fixes the ceramic substrate, such as Figure 5 As sho...

Embodiment 2

[0088] Adopt the cross-flow membrane bioreactor ultrafiltration system of embodiment 1 to carry out waste water treatment, comprise following operation:

[0089] 1. Aerobic box treatment process:

[0090] 1. Aeration treatment.

[0091] Through the aeration of the aeration device, the concentration of dissolved oxygen in the aerobic tank is increased, and aerobic microorganisms are multiplied. Part of the bred aerobic microorganisms remains in the aerobic tank to react with wastewater, aerobically degrades the pollutants, and the other Part of it adheres to and grows on the surface of the ceramic substrate along with the spraying process, forming a biofilm.

[0092] Second, the ceramic membrane group treatment process.

[0093] 1. The first liquid level (low liquid level) treatment process.

[0094] When the liquid level sensing device senses that the wastewater liquid level is at the first liquid level, that is, lower than the low liquid level, the central control system c...

Embodiment 3

[0109] The cross-flow membrane bioreactor ultrafiltration system of Example 1 was used, and the catering wastewater was treated according to the wastewater treatment method of Example 2.

[0110] The catering wastewater was taken for filtration, and the pre-treatment and post-treatment samples of different dates in 2018 were taken for testing. The results are shown in the table below.

[0111] Table 1. Effects of catering wastewater treatment on different dates

[0112]

[0113] Table 2. Catering wastewater treatment effect at different time points

[0114]

[0115] Note: COD refers to Chemical Oxygen Demand, chemical oxygen demand;

[0116] Raw water refers to the catering wastewater before treatment;

[0117] Biochemical water refers to the water after microbial oxidation and decomposition treatment and biofilm biochemical treatment;

[0118] Water produced by ceramic membrane refers to the purified water flowing out of the substrate pipeline of the ceramic membrane...

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Abstract

The invention relates to a wastewater treatment method, and a cross-flow membrane bioreactor ultrafiltration system used therein, and belongs to the technical field of wastewater treatment. The cross-flow membrane bioreactor ultrafiltration system comprises: a ceramic module comprising ceramic substrates for microorganisms to adhere and grow, wherein the ceramic substrates are vertically arranged;a spraying device comprising spraying nozzles and a spraying pipeline; an aerobic tank comprising an aerobic tank body and an aerator, wherein the aerobic tank body is arranged below the ceramic module; and a liquid path system comprising a spraying water pump, an ultrafiltration valve, an ultrafiltration outlet valve and a module pipeline, wherein one end of the module pipeline is communicated with a substrate pipeline, the other end of the module pipeline is communicated with the ultrafiltration outlet valve, and the ultrafiltration valve is arranged on the module pipeline. The cross-flow membrane bioreactor ultrafiltration system integrates a membrane separation technology with a biological treatment technology, is a novel wastewater treatment system mainly based on biochemical treatment and also having a membrane filtration function, and has a high throughout and a good treatment effect on restaurant wastewater.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment method and a cross-flow membrane bioreactor ultrafiltration system adopted therein. Background technique [0002] With the development of cities and urbanization, the scale and number of hotels, hotels, and canteens are increasing day by day, and the resulting amount of catering wastewater is increasing, and there is a growing trend. [0003] At present, in practice, for catering wastewater, simple oil separation devices or biochemical treatment devices are mostly used. Due to some problems in terms of economy, energy consumption, treatment effect and land occupation, it is difficult to promote their use in urban catering. [0004] Moreover, the conventional wastewater treatment process has a poor treatment effect on catering wastewater, and it is difficult to adapt to the daily large-scale catering wastewater treatment in terms of processing f...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/02C02F3/12C02F3/34C02F9/14
CPCC02F3/02C02F3/1268C02F3/301C02F3/34Y02W10/10
Inventor 曹辉
Owner 广州市世来至福科技有限公司
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