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Environment-friendly process for improving treatment capacity of EMBR system by utilizing volume synergistic effect of homogenizing tank and inlet and return water flow diversion design

A technology of synergistic effect and processing capacity, applied in the field of chemical wastewater treatment, can solve the problems of high MLSS of sewage, abnormal metabolism and swelling, malnutrition of sludge, etc., to improve membrane treatment efficiency, reduce treatment pressure, and reduce sludge discharge and the effect of environmental treatment costs

Active Publication Date: 2021-02-23
陕西麦可罗生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006]In order to solve the problem of excessively high sewage MLSS in the existing production, which leads to abnormal membrane effluent and high sludge discharge costs, abnormal metabolism and abnormal sludge caused by malnutrition and environmental changes Expansion problem, the present invention provides an environmental protection process that utilizes the volume synergy effect of the homogenization tank and the design of inlet and outlet water diversion to improve the treatment capacity of the EMBR system. or COD) enters the homogenization tank, double-low sewage (low ammonia nitrogen, low COD) enters the biological waterfall gas tank, the sewage in the homogenization tank is anaerobically decomposed, and then enters the EMBR treatment unit, and the biofilm tank is used for filtration and drainage, while the biofilm Backwater diversion in pool design: Every day, part of the activated sludge in the membrane pool enters the pre-acidification collection pool for acid hydrolysis, and then enters the homogenization pool for secondary anaerobic decomposition to achieve the effect of sludge biodegradation

Method used

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  • Environment-friendly process for improving treatment capacity of EMBR system by utilizing volume synergistic effect of homogenizing tank and inlet and return water flow diversion design

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. After the production sewage and domestic sewage are combined, they enter the homogenization tank through the sewage collection tank. The homogenization time is about 5 days, the pH is controlled between 5.5-8.5, the average COD is 3500-5000mg / L, and the ammonia nitrogen is 250-350mg / L.

[0034] 2. After homogenization, the sewage enters the anoxic tank at a constant rate every day for denitrification treatment, then enters the contact oxidation tank for oxidation and decomposition, and finally enters the biological aeration tank, where it is filtered and drained through the biofilm tank.

[0035] 3. The daily sewage treatment capacity is 360-400m³, the membrane flux is 16-20m³ / h, the membrane regeneration frequency is 10min per hour, the membrane regeneration water consumption is 48m³ per day, the actual operation time is 20h, and the effluent COD is between 400-550mg / L Between, the ammonia nitrogen is between 40-60mg / L.

Embodiment 2

[0037] 1. Production drainage diversion design:

[0038] 1) Double-high sewage with a solid content greater than 0.4% and ammonia nitrogen greater than 100mg / L enters the homogenization tank with an inflow of 350m 3 / d.

[0039] 2) Double-low sewage with a solid content of less than 0.4% and ammonia nitrogen less than 100mg / L directly enters the biological aeration tank with an inflow of 100mgm 3 / d.

[0040] 3) Production drainage includes: raw material medicine and preparation workshop production sewage of kasugamycin, polyoxin, and Zhongshengmycin, and a small amount of domestic sewage.

[0041]2. EMBR processing system:

[0042] 1) The production double-high drainage enters the double-high wastewater collection tank, and the sewage is pumped into the homogenization tank, the pH balance reaches 5.0-7.0, and 300-400m³ / d is continuously pumped into the anoxic tank for denitrification treatment, and the anoxic tank is controlled The pH is 7.0-8.0, then enters the contact o...

Embodiment 3

[0050] 1. Production drainage diversion design:

[0051] 1) The double-high sewage with COD greater than 2000mg / L and ammonia nitrogen greater than 100mg / L enters the homogenization tank, and the water inflow is 450m³ / d.

[0052] 2) The double-low sewage with COD less than 2000mg / L and ammonia nitrogen less than 100mg / L directly enters the biological aeration tank, and the water inflow is 200m³ / d.

[0053] 3) Production drainage includes: raw material medicine and preparation workshop production sewage of kasugamycin, polyoxin and Zhongshengmycin, and a small amount of domestic sewage.

[0054] 2. EMBR processing system:

[0055] 1) The production drainage enters the double-high wastewater collection tank, and is pumped into the homogenization tank through the sewage, the pH balance reaches between 5.0-7.0, and 600-700m³ / d is continuously pumped into the anoxic tank for denitrification treatment, and the pH of the anoxic tank is controlled at 7.0-8.0, then enter the contact ...

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Abstract

The invention discloses an environment-friendly process for improving the treatment capacity of an EMBR system by utilizing a volume synergistic effect of a homogenizing tank and inlet and return water flow diversion design. The main process flow of the process is as follows: production water drainage diversion collection is designed, namely double-high sewage (high ammonia nitrogen, high organicmatter or COD) enters a homogenizing tank, double-low sewage (low ammonia nitrogen and low COD) enters a biological aeration tank, the sewage in the homogenizing tank is subjected to anaerobic decomposition and then enters an EMBR treatment unit, and a biological membrane tank is adopted for filtration and water drainage; meanwhile, the return water diversion of a biological membrane tank is designed, namely part of active sludge of the membrane tank enters a collecting tank for acidolysis every day and then enters the homogenizing tank for secondary anaerobic decomposition, so that the physical and chemical decomposition and biodegradation effects of the sludge are achieved. According to the system, through sewage inlet water diversion collection process design and biological membrane tank return water diversion design, the volume synergistic effect of the collection tank and the homogenizing tank is innovatively utilized, the optimized operation process of the EMBR sewage treatment system is achieved, and on the basis that a large amount of investment is not increased to construct infrastructure and original hardware design is not changed, the sewage treatment capacity is increased by 30-50% every day, the membrane flux is increased by 30-35%, the effluent quality is improved by 60%-65%, and the membrane material consumption is also effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical wastewater treatment, and in particular relates to an environment-friendly process for improving the treatment capacity of an EMBR system by utilizing the volume synergistic effect of a homogenization tank and the diversion design of inflow and return water. Background technique [0002] The high-concentration organic wastewater produced in the antibiotic production process contains relatively high levels of antibiotics. At the same time, it has the problem of drug-resistant gene pollution to the natural environment. Its collection, storage, and disposal must be strictly implemented in accordance with the standards stipulated in the national hazardous waste list. [0003] Bio-pesticide antibiotic wastewater has complex water quality, which contains industrial materials, intermediate products and products lost with water, as well as various by-products and microbial secondary metabolites produced i...

Claims

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Application Information

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IPC IPC(8): C02F3/30
CPCC02F3/30Y02W10/10
Inventor 王卫富马文艳潘忠成王梦飞李蒲民
Owner 陕西麦可罗生物科技有限公司