Paper on bioreactor

Operating instructions of membrane bioreactor

It is recommended to use a diffused aerator to scrub the membrane by fully shaking the membrane fiber through the bubbles and water flow generated by aeration. At the same time, the intermittent operation mode is adopted. The self-priming pump pumps for 13 minutes and stops for 2 minutes, which can prevent the membrane hole from blocking and make long-term stable operation possible. When the system is running, the method of constant flow is adopted. The suction negative pressure can be read through the electric contact pressure gauge

Commissioning and management of MBR membrane bioreactor

MBR membrane bioreactor is an advanced sewage treatment method, which combines the advantages of traditional biochemical method and membrane treatment method. It has many advantages such as effluent quality, stability and reliability. A key link of the sewage treatment system is debugging and management. This paper focuses on the sewage treatment process of membrane bioreactor, from clean water commissioning to sludge inoculation operation, to daily management and dosing

Technical and economic analysis of membrane bioreactor

Technical and economic analysis of membrane bioreactor

Membrane bioreactor technology: process details

This book is a professional book on membrane bioreactor, which introduces the principle, engineering design and specific process of the biofilm process in detail.

Technical progress of dynamic membrane bioreactor

This paper introduces the membrane forming mechanism of dynamic membrane bioreactor (Dyan mci m ebm anr e bi 􀀂 er ac ot r, DMBR), membrane structure, shape, filtration model and resistance characteristics, and discusses the effect of substrate selection sludge concentration (M ling S), effluent head cross flow velocity, on dynamic membrane bioreactor

Performance and Application of Pressurized Aerated Bioreactor

A pressurized aeration bioreactor was developed, and its performance, kinetic parameters, operating parameters and application in industrial wastewater treatment were introduced.

Pressurized Aerated Bioreactor and Its Process Design

The process design of pressurized aeration bioreactor and its treatment system is introduced, including reactor principle, process flow, operating parameters, process design features, etc.

Advantages, disadvantages and improvement ideas of membrane bioreactor

MBR has different classifications according to different standards. The common ones are split MBR and integrated MBR, both of which have advantages and disadvantages, and are applied in practice.

Industrial design and manufacture of small membrane bioreactor

This paper introduces a membrane bioreactor with hollow fiber microfiltration membrane as the core membrane module. Including pollution and prevention of membrane module, self-designed small experiment, etc. The influence of MBR during operation was analyzed

Design of MBR membrane bioreactor

Including mbr overview, FLEXELL hollow fiber membrane module, mbr system design, for reference.

COD and UV254 of effluent from membrane bioreactor

The membrane bioreactor built in the laboratory was used to treat catering wastewater. The CODCr and UV254 values of several groups of effluent were measured respectively, and the linear relationship between COD and UV254 was obtained after the data were analyzed and processed with the Origin software. Through this relationship, COD can be directly obtained from UV254 value, which not only shortens the test time, but also improves the

Membrane fouling mechanism and prevention of membrane bioreactor

This paper introduces the latest research status of the mechanism, mathematical model and prevention methods of membrane pollution at home and abroad in recent years, and discusses the research frontiers of membrane pollution prevention technology.

Treatment of wastewater from paint factory by membrane bioreactor

The design and operation of membrane bioreactor (MBR) for wastewater treatment in paint factory were introduced. The practice shows that the average removal rates of COD and SS in the effluent pretreated by coagulation and filtration by MBR are 91% and 85% respectively, and MBR has the advantages of simple process, easy management, high operation efficiency, etc.

Research and Application Progress of Anaerobic Membrane Bioreactor

AnMBR is a new efficient water treatment technology that effectively combines membrane separation technology and anaerobic biological treatment unit. On the basis of retaining many advantages of anaerobic technology, this technology also brings a series of advantages due to the introduction of membrane modules to achieve efficient solid-liquid separation.

Characteristics of Membrane Bioreactor for Domestic Sewage Treatment

The characteristics of membrane bioreactor applied in domestic sewage treatment are reviewed. Membrane modules can be divided into tubular membrane and plate membrane.

Specification for engineering design of membrane bioreactor

1.0.1 This procedure is formulated to standardize the engineering design of membrane bioreactor and achieve advanced technology, reasonable economy, safe application and qualified quality. 1.0.2 This procedure is applicable to the design of new construction, expansion and reconstruction projects of urban sewage treatment using microfiltration or ultrafiltration membrane bioreactor. Design of industrial wastewater treatment project similar to urban wastewater quality

Study on treatment of domestic sewage by single-stage membrane bioreactor

For single-stage membrane bioreactor 6= The treatment of domestic sewage was studied, and the removal effect of the reactor on ∋ (>) and nitrogen and its influencing factors were investigated under four working conditions. The test results showed that the reactor had a good removal effect on ∋ (>), and the removal rate was above ≅: α 8 for nitrogen removal

Application of membrane bioreactor in wastewater reuse in residential quarters

This paper summarizes the design principles and common process flow of sewage treatment in urban residential quarters, and introduces in detail that the sewage in residential quarters can meet the water quality requirements of reclaimed water reuse after advanced treatment and disinfection, which provides an alternative process for sewage treatment and reuse in residential quarters

Principle and development of ABR reactor

With the rapid development of industry and the continuous increase of population, the problems of energy, resources and environment have become increasingly serious. In the past 30 years, the shortage of energy has become prominent. Using traditional aerobic biological treatment method to treat wastewater will consume a lot of energy, and the energy consumption for wastewater in developed countries has accounted for about 1% of the total power consumption of the country. The essence of aerobic biological treatment of wastewater is to use electric energy

Initial startup of UASB reactor

The wastewater treatment plant of an alcohol enterprise treats the secondary steam condensate discharged by the alcohol evaporation process and part of the centrifugal clear liquid discharged in accident. The average water volume is 405 m3/d, the average temperature is about 50 ℃, the pH value is 3.6, the COD of the stock solution is about 8000 mg/l, and the SS is 1600 mg/l

Integrated membrane bioreactor for treatment of traditional Chinese medicine wastewater

The design and operation of integrated membrane bioreactor (MBR) process for treating Chinese medicine wastewater were introduced. The monitoring results show that MBR operates stably, and its effluent quality meets the first class discharge standard of GB8978-1996.

New Process of Membrane Bioreactor Wastewater Treatment

New Process of Membrane Bioreactor Wastewater Treatment

Application Status and Existing Problems of Membrane Bioreactor

Membrane bioreactor (MBR) is a highly efficient wastewater treatment process newly developed in recent years. It is mainly used for the treatment of domestic sewage, water supply denitrification, oily wastewater and toxic industrial wastewater. Purified water is reused as reclaimed water. Membrane bioreactor has many advantages that cannot be compared with traditional process, but there are also problems such as high membrane cost, high energy consumption and membrane pollution in practical application. through

Specification for membrane bioreactor wastewater treatment

This standard specifies the technical requirements for process design, main process equipment and materials, monitoring and control, construction and acceptance, operation and maintenance of sewage treatment engineering using membrane bioreactor method

Study on membrane fouling control in membrane bioreactor

The methods of controlling membrane fouling were studied in terms of the type of membrane bioreactor, the ratio of gas to water and the concentration of powdered activated carbon. The results show that the optimal types of integrated membrane bioreactor and separated membrane bioreactor are different; Large air-water ratio is beneficial to reduce membrane pollution, but under certain water quality conditions, the reduction rate of membrane flux caused by increasing aeration rate is limited; throw

Influencing factors of membrane fouling in hollow fiber membrane bioreactor

In this paper, the effects of different external factors on membrane fouling of two PVDF hollow fiber membrane bioreactors (MBR) with different pore sizes in municipal wastewater treatment were studied.

Low temperature start-up of suspended diatomite bioreactor

Diatomite has the characteristics that can be used as a suspension carrier for microorganism attachment and growth. The suspended diatomite bioreactor is a bioreactor that uses diatomite as a microbial carrier. The research results of the low temperature start-up process of the pilot plant of suspended diatomite bioreactor show that environmental factors have a weak impact on the nitrification of organisms attached to the diatomite surface

At the same time, aerobic anoxic bioreactor is used to treat waste water from garbage compression station

Simultaneous aerobic anoxic reactor was used to treat waste water from garbage compression station. The test results show that the reactor has a good treatment effect on CODCr, NNH4+- N and TN of waste water from garbage compression station. During the test, the average removal rates of CODCr, NH4+- N and TN were 71.30

Application and prospect of membrane bioreactor in reclaimed water reuse

Abstract: As a new sewage treatment process, membrane bioreactor (MBR) has been widely used in the field of sewage treatment. This paper briefly describes the necessity of reclaimed water reuse in China, analyzes the characteristics of membrane bioreactor (MBR) and its advantages in reclaimed water reuse, summarizes the application status of MBR in reclaimed water reuse in China, and looks forward to the application of MBR process in China

Technical Proposal for 100 ton/day Membrane Bioreactor. pdf

Rapid remediation of slightly polluted urban water by bamboo fiber bioreactor

In order to test the feasibility and advantages of bamboo fiber bioreactor in treating low pollution water, the removal efficiency and mechanism of COD, NH4+- N and turbidity of the bioreactor were discussed by using a small scale test method, and the pollutant removal characteristics of bamboo fiber bioreactor were analyzed.

Market status and engineering application of membrane bioreactor in the world

The remarkable advantages of membrane bioreactor (MBR) make it a competitive choice in the treatment and reuse of urban sewage and industrial wastewater, and it is regarded as the "Best Available Technology". The number of projects and treatment scale are increasing rapidly

Study on improving the performance of bio contact oxidation and nitrification by reactor zoning

In order to overcome the problem that nitrification activity is affected by the competitive disadvantage of nitrifying bacteria and organic matter degrading bacteria in ordinary biological contact oxidation reactor, the reactor is simply separated, and the nitrification performance is improved through microbial ecological regulation. The results show that under the medium load conditions of BOD and TN loads of 1.0 and 0.19 kg/(m3. d) respectively, the reactor is partitioned

Study on membrane fouling mechanism in submerged membrane bioreactor

In order to reduce membrane pollution caused by microbial flocs, a membrane bioreactor with a settling chamber was designed. Membrane A and membrane B were submerged in the supernatant and sludge mixture respectively and operated in the same suction mode Contrary to the expected results, the fouling rate of membrane A is faster than that of membrane B In order to explore the mechanism of membrane fouling, the effects of different components in sludge mixture on membrane fouling were investigated,

Effect of dissolved oxygen on integrated membrane bioreactor (IMBR)

Abstract: In view of the impact of dissolved oxygen (DO) and gas water ratio on the effluent effect of IMBR process and energy consumption, the best working point between the gas water ratio, dissolved chlorine and sewage treatment effect is discussed from the impact of gas water ratio on DO and the impact of DO on the removal effect of COD and NHN. The test results show that P (MLSS) is 4.23 and 4 respectively

Analysis on Treatment of Landfill Leachate by Membrane Bioreactor

In view of the problems of poor treatment effect and unstable operation of membrane bioreactor (MBR) system for landfill leachate at present, the sludge concentration and composition of MBR system for landfill leachate were predicted and analyzed through theoretical model. The results show that the concentration of sludge in leachate MBR of waste incineration plant is too high (22.0 g/L

Study on Treatment of Printing and Dyeing Wastewater by Membrane Bioreactor Enhanced with Bioboosters

This information is mainly about the research on the treatment of printing and dyeing wastewater by membrane bioreactor enhanced by biological growth promoter, and the content is very detailed for reference.

Relationship between suitable operating flux and critical flux of flat membrane bioreactor

By investigating the membrane fouling of the flat membrane bioreactor after constant flow operation with different initial start-up fluxes, the relationship between the appropriate operating flux and the critical flux of the system was studied. The results showed that the critical flux of the MBR was 40 ～ 43L/(m2 · h). Membrane fouling after constant current operation with different fluxes