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Biological treatment process technology for MBR (Meane Biological Reactor) membrane of engineering bacteria fed by using activated carbon as carrier

A treatment process and activated carbon technology, applied in the field of MBR membrane biological treatment process, can solve the problems of rising operating costs for the owner, high cost of high-efficiency bacteria, and difficulty in popularization, etc., to promote the number of bacteria, alleviate the blockage of MBR membrane and reduce the flux. , the effect of eliminating the loss of bacteria

Inactive Publication Date: 2012-08-15
上海集策膜技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Engineering bacteria and high-efficiency bacteria are expensive, and regular dosing will greatly increase the owner's operating costs, so their use is limited and difficult to promote

Method used

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  • Biological treatment process technology for MBR (Meane Biological Reactor) membrane of engineering bacteria fed by using activated carbon as carrier
  • Biological treatment process technology for MBR (Meane Biological Reactor) membrane of engineering bacteria fed by using activated carbon as carrier
  • Biological treatment process technology for MBR (Meane Biological Reactor) membrane of engineering bacteria fed by using activated carbon as carrier

Examples

Experimental program
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Effect test

Embodiment 1

[0049]Example 1: Taking fine chemical intermediate wastewater from a certain factory as an example, after anaerobic and aerobic treatment, the effluent COD: 300-500mg / l, BOD: 40-50mg / l, B / C about 0.1, biodegradable very bad. Taking the aerobic effluent as the influent, three groups of control experiments were started, namely ① engineering bacteria + granular activated carbon (20 mesh); ② engineering bacteria + powdered activated carbon (300 mesh) + MBR, ③ aerobic activated sludge + MBR, among which ① and ② the number of engineering bacteria, the same weight of activated carbon, ② SV3032%. The test was run continuously for 70 days, the temperature was strictly controlled at 25±2°C, and the volume load was 0.5-0.6kgCOD / (m3.d). In the first 55 days of operation, the removal rates of ① and ② are very high, reaching more than 78%, while ③ only achieves a removal rate of 35%. This shows that the engineered bacteria have energy-consuming removal effect on refractory components in w...

Embodiment 2

[0050] Example 2: The expansion and transformation of a certain pharmaceutical and chemical sewage process:

[0051] After the sewage is settled by inclined plate and sand filter to further remove impurities in the water, it enters the aeration tank, and the MBR membrane module is installed in the aeration tank.

[0052] (1) MBR membrane module inlet water quality:

[0053] PH: 6.5~8.5; COD: 900~1200mg / l; TDS: 9000~15000mg / l; NH3-N: 10~30mg / l; SS: ≤100mg / l.

[0054] (2) Outlet water quality requirements:

[0055] COD≤350mg / l; NH3-N≤10mg / l; SS≤10mg / l; chromaticity is zero.

[0056] (3) The amount of water treated by the MBR membrane module:

[0057] 450~600 tons / day.

[0058] (4) Brief introduction of treatment process:

[0059] Special aerobic strains are used, and 200-mesh powdered activated carbon is used as the carrier. Activated carbon and EMO bacteria are intercepted by MBR membrane. The dosage of powdered activated carbon is 60 tons. The sludge yield of special stra...

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Abstract

The invention discloses a biological treatment process technology for an MBR (Meane Biological Reactor) membrane of engineering bacteria fed by using activated carbon as a carrier, which belongs to the technical field of sewage treatment, and has the process that a sloping plate sedimentation tank and a sand filter are prepositioned, thoroughly removing particulate matters in inflow water, the length-width ratio of an aeration tank is 3:1, the depth of the tank is 5-6m, an MBR membrane component is placed on the tail end of the aeration tank, an aerating system comprises a plurality of groups of liftable micropore aerator pipes, overhauling and replacement can be carried out at any time without affecting operation of the system when failures occur, the activated carbon adopts 300-mesh powdered carbon, the feeding amount reaches 30-40 percent under the condition of normal water level SV 30, the MBR membrane component adopts a high-quality microfiltration membrane with the hole diameter being 0.1 mum, spoil disposal is not carried out when the system is in operation, aged sludge can be removed through aerobic digestion, and the MBR membrane process adopts a parallel pump to discharge water. The process technology is simple, is stable to operate, is simple to manage, and has low energy consumption, convenience in maintenance, low manufacturing cost, and easiness in adjustment.

Description

[technical field] [0001] The invention relates to a biological treatment technology, in particular to an MBR membrane biological treatment technology in which activated carbon is used as a carrier and engineering bacteria are added. [Background technique] [0002] At present, in the MBR membrane biological treatment process, conventional activated sludge is used as inoculation sludge for domestication and cultivation. Due to the interception effect of the MBR membrane, it is very effective in preventing sludge loss and increasing the sludge age and sludge concentration. Therefore, the MBR process has a short commissioning period, stable operation, relatively high COD removal rate, clear effluent, and good water quality. However, for some industrial wastewater with complex water quality, poor biodegradability, and high drainage requirements, the MBR treatment effect is unsatisfactory, and there are few application cases. [0003] In order to improve the treatment effect and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 程兆鹏周国勇张忠政狄秋明
Owner 上海集策膜技术工程有限公司
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