Anoxic/oxic-membrane bioreactor water treatment device and sewage treatment method thereof

A water treatment device and sewage technology, applied in the field of water treatment, can solve the problems of large floor space and high sludge treatment costs, and achieve the effects of high volume load, strong adaptability and saving sludge treatment costs.

Active Publication Date: 2011-07-13
LONG JIANG ENVIRONMENT PROTECTION GROUP SHARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problems of high sludge treatment cost and large floor area in the A / O process; furthermore, it provides an A / O-MBR water treatment device and a method for treating sewage

Method used

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  • Anoxic/oxic-membrane bioreactor water treatment device and sewage treatment method thereof
  • Anoxic/oxic-membrane bioreactor water treatment device and sewage treatment method thereof

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Experimental program
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Effect test

specific Embodiment approach 1

[0016] Specific implementation mode one: combine figure 1 To illustrate, the A / O-MBR water treatment device in this embodiment includes a water inlet pipe 1, a trash rack 2, a pressure controller 3, a first connecting pipe 4, an interceptor 5, a first control valve 6, a return pipe 7, First flowmeter 8, fan 9, negative pressure transmitter 10, first water outlet pump 11, second flowmeter 12, second connecting pipe 13, water outlet pipe 14, ultraviolet disinfection device 15, second water outlet pump 16, clean water Pool 17, membrane module 18, aeration device 19, reflux pump 20, oxidation tank 21, agitator 22, anaerobic tank 23, discharge pipe 24, crushing pump 25, grid slag collection tank 26, adjustment tank 27 and the second control Valve 28; the water outlet of the water inlet pipe 1 is connected with the water inlet of the trash rack 2, the water outlet of the trash rack 2 is connected with the water inlet of the regulating tank 27 top, and the water outlet of the regulat...

specific Embodiment approach 2

[0017] Embodiment 2: This embodiment differs from Embodiment 1 in that: a filter screen is installed in the retainer 5 . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Specific embodiment three: In this embodiment, the method for treating sewage by the A / O-MBR water treatment device is realized through the following steps:

[0019] Step 1: Inoculate activated sludge into anaerobic pool 23 and aerobic pool 21, feed municipal sewage to domesticate activated sludge until MLSS (circulation ratio) reaches 3000 mg / L, pass water to membrane module 18, and then continuously feed water to MLSS Reach 6000mg / L to complete the start;

[0020] Step 2, the municipal sewage is filtered through the trash rack 2 after passing through the water inlet pipe 1, and then passed into the regulating tank 27, then pulverized by the crushing pump 25 and then filtered by the interceptor 5;

[0021] Step 3, the sewage treated in step 2 is passed into the anaerobic pool 23 together with the nitrifying liquid in the aerobic pool 21, and denitrification and denitrification treatment is carried out under the condition of stirring, and the hydraulic retention time is...

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Abstract

An anoxic/oxic-membrane bioreactor (A/O-MBR) water treatment device and a sewage treatment method thereof belong to the water treatment field. The invention aims to solve the technical problems of the A/O technology that the sludge treatment cost is high and the floor area is large. In the device of the invention, a water outlet on the lower part of an anaerobic tank is communicated with a water inlet on the lower part of an aerobic tank, and a membrane component is arranged in the aerobic tank. After the device of the invention is started, denitrification treatment is performed in the anaerobic tank, the microorganisms in the anaerobic tank are used to decompose and convert the organic matter, the membrane component is used to treat and then ultraviolet sterilization is performed. The water quality of the effluent meets the level-one A standard. The method combines the A/O technology with the MBR technology and utilizes membrane separation to leave activated sludge in the system, thus greatly saving the sludge treatment cost.

Description

technical field [0001] The invention belongs to the field of water treatment. Background technique [0002] With the acceleration of urbanization, the construction and demand of sewage treatment facilities in small towns are becoming more and more urgent. Most of the various treatment processes of existing urban sewage plants are evolved on the basis of the introduction, digestion and absorption of foreign large-scale urban sewage plant treatment technologies. Although there have been many improvements and developments in the past thirty years, these improvements and developments are all aimed at large and medium-sized sewage treatment plants. For sewage treatment plants with thousands of tons per day and below, the large and medium-sized sewage treatment process is basically used, but the size is reduced, and each function is quite different. This will inevitably lead to high investment costs per ton of water and operating costs per ton of water. At the same time, the ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30
Inventor 朴庸健刘德斌张福贵徐勋
Owner LONG JIANG ENVIRONMENT PROTECTION GROUP SHARE
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