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Equipment for deweighting city sewage sludge by MBR combined with helminth attaching biological bed

A technology for sludge reduction and urban sewage, applied in biological water/sewage treatment, sustainable biological treatment, water/sludge/sewage treatment, etc., can solve problems such as difficult sludge treatment, achieve sludge concentration reduction, The effect of enhanced sludge activity and reduced frequency of membrane fouling

Active Publication Date: 2008-04-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an MBR combined with worm-attached biological bed to reduce the amount of municipal sewage sludge, so as to solve the bottleneck problem that the sludge in the existing sewage treatment process is difficult to handle, and realize "pure ecological" sludge reduction

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  • Equipment for deweighting city sewage sludge by MBR combined with helminth attaching biological bed
  • Equipment for deweighting city sewage sludge by MBR combined with helminth attaching biological bed
  • Equipment for deweighting city sewage sludge by MBR combined with helminth attaching biological bed

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specific Embodiment approach 1

[0010] Specific Embodiment 1: The present embodiment will be specifically described below with reference to FIG. 1 to FIG. 4 . This embodiment consists of a membrane bioreactor, No. 1 mud pump 30, No. 2 mud pump 31, and worm-attached biological bed Y. The entrance of worm-attached biological bed Y is connected to the membrane bioreactor through No. 1 mud pump 30. The bottom of one side of the tank body 13 of the membrane bioreactor, and the outlet of the worm-attached biological bed Y is connected to the bottom of the other side of the tank body 13 of the membrane bioreactor through No. 2 sludge pump 31.

[0011] The worm-attached biological bed Y is composed of a container 8, a plurality of deflector plates 7, an aeration device 6 and a plurality of worm attachment plates 9. The front end of the container 8 has an entrance 8-1, and the rear end of the container 8 has a At the outlet 8-2, a plurality of deflectors 7 are distributed in the container 8 from the inlet 8-1 to the ...

specific Embodiment approach 2

[0022]Specific Embodiment 2: The present embodiment will be specifically described below with reference to FIG. 1 . In this embodiment, the membrane bioreactor includes a membrane module 11, a tank body 13, an aeration device 10, and a vacuum pumping system 18. The membrane module 11 is arranged in the middle of the tank body 13, and the aeration device 10 is arranged below the membrane module 11. The vacuum pumping system 18 penetrates into the top of the tank body 13 and is connected to the outlet of the membrane module 11 to discharge the water treated by the membrane module 11 .

[0023] The water temperature in the tank 13 is 15 to 25 degrees. The membrane module 11 adopts the polyvinylidene fluoride hollow fiber micro-filtration curtain membrane module produced by Tianjin Motian Technology Company. The membrane pore size is 0.22 μm, and the inner and outer diameters of the hollow fiber membrane are 0.5 mm. and 0.8mm. The membrane area of ​​each membrane module is 12.5m ...

specific Embodiment approach 3

[0035] Specific Embodiment Three: The present embodiment will be specifically described below with reference to FIG. 1 . The difference between this embodiment and Embodiment 1 is that it also includes a regulating tank 4 and two gate valves 2. The outlet of the tank body 13 of the membrane bioreactor is connected to the No. 1 sludge pump 30 through the gate valve 2, and the No. 1 sludge pump The outlet of the pump 30 is connected to the inlet of the regulating tank 4, and the outlet of the regulating tank 4 is connected to the inlet 8-1 of the worm-attached biological bed Y through the gate valve 2.

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Abstract

A device using an MBR-combined-worm attaching type biological bed for decreasing the amount of sludge in city sewage is disclosed. The invention belongs to the technical field of sludge treatment with biological technology and relates in particular to an MBR-worm attaching type biological bed combined system. The system overcomes the shortcomings of high sludge concentration and high membrane pollution frequency of the prior sludge decrement equipment with membrane biological reaction, and consists of a membrane biological reactor, a first dredge pump 30, a second dredge pump 31 and a worm attaching type biological bed Y, wherein, the entrance of the worm attaching type biological bed Y communicates with the bottom of one side of a tank body 13 of the membrane biological reactor via the first dredge pump, and the exit of the worm attaching type biological bed Y communicates with the bottom of the other side of the tank body 13 of the membrane biological reactor via the second dredge pump. The sludge decrement can exceed 95 percent and the outlet water has excellent quality, so the reclaimed water reuse can be realized.

Description

technical field [0001] The invention belongs to the technical field of using biological technology to treat sludge, in particular to a combined system of MBR and worm-attached biological bed. Background technique [0002] Sewage sludge, as an inevitable product in the process of sewage treatment, has brought about increasingly serious environmental pollution problems. Municipal domestic sewage is treated by ordinary activated sludge method and AB method, 48% and 58% of the influent BOD will be converted into sludge, and its output accounts for about 0.5 to 1.0% of the total treated water volume. In the true sense, the oxidative decomposition of BOD is only Accounted for 42% and 34%. Therefore, for most wastewater treatment, influent pollutants will be transformed into nature in the form of sewage sludge. [0003] my country's sewage treatment rate has increased from 33.15% in 2000 to 56% at the end of 2006. In 2006, the amount of sludge (dry weight) discharged by my countr...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F3/32
CPCY02W10/10
Inventor 田禹左薇卢耀斌
Owner HARBIN INST OF TECH