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MBBR system for enhancing ammonia nitrogen treatment via efficient flocculation sedimentation tank and operation method

A settling tank and flocculation technology, which is applied in the direction of chemical instruments and methods, special treatment targets, water/sewage treatment, etc., can solve the problems of increasing system footprint and complicated process flow, and achieve saving of secondary sedimentation tank footprint and process flow Short, the effect of overcoming poor movement

Pending Publication Date: 2021-03-23
QINGDAO SPRING WATER TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the process can be formed as a whole, it has a certain degree of intensiveness and reduces the production cost to a certain extent, but its process flow is too complicated. The activated sludge method used requires three sedimentation tanks for settlement, which greatly increases the area occupied by the system.

Method used

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  • MBBR system for enhancing ammonia nitrogen treatment via efficient flocculation sedimentation tank and operation method
  • MBBR system for enhancing ammonia nitrogen treatment via efficient flocculation sedimentation tank and operation method

Examples

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Embodiment 1

[0057] A river slightly polluted water treatment project with a design water volume of 300,000 m 3 / d, influent COD, NH 3 , SS design values ​​are 11.00, 1.00, 15.00mg / L respectively, using high-efficiency flocculation sedimentation tank to strengthen ammonia nitrogen treatment MBBR system, in which the total tank capacity of flocculation reaction zone and sedimentation zone is 7500m 3 , the pool capacity of the aeration reaction area is 12500m 3 . Dosing suspended carrier in the aeration reaction zone, the density of the suspended carrier is 0.98g / cm 3 , the effective specific surface area is 800m 2 / m 3 , the filling rate is 40%; the width of the first intercepting screen at the bottom of the aeration reaction zone is consistent with the width of the bottom of the aeration reaction zone, and the length is 15% of the length of the bottom of the aeration reaction zone; There is a diversion wall, and the vertical distance between the lower end of the diversion wall and the...

Embodiment 2

[0059] An integrated sewage treatment device with a design water volume of 350m 3 / d, influent COD, NH 3 , SS design values ​​are 150, 20, and 200mg / L respectively, and the high-efficiency flocculation sedimentation tank is used to strengthen the ammonia nitrogen treatment MBBR system, in which the suspended carrier is added in the aeration reaction zone, and the suspended carrier density is 0.98g / cm 3 , the effective specific surface area is 800m 2 / m 3, the filling rate is 30%; the width of the first intercepting screen at the bottom of the aeration reaction zone is consistent with the width of the bottom of the aeration reaction zone, and the length is 15% of the length of the bottom of the aeration reaction zone; There is a diversion wall, and the vertical distance between the lower end of the diversion wall and the bottom of the pool in the water outlet area is 1.0m; there is a mud baffle between the mud passage and the sedimentation area, which is at an angle of 55° to...

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Abstract

The invention discloses an MBBR system for enhancing ammonia nitrogen treatment via an efficient flocculation sedimentation tank and an operation method, belonging to the technical field of water treatment. The MBBR system comprises a reaction tank, a main water inlet pipeline and a main water outlet pipeline, wherein the interior of the reaction tank is sequentially divided into a flocculation reaction zone, a sedimentation zone, an aeration reaction zone and a water outlet zone from front to back; the main water inlet pipeline is connected to a tank body of the flocculation reaction zone; the main water outlet pipeline is connected to a tank body of the water outlet zone; to-be-treated water enters from the main water inlet pipeline, sequentially passes through the flocculation reactionzone, the sedimentation zone, the aeration reaction zone and the water outlet zone, and is then discharged through the main water outlet pipeline; a sludge collecting hopper is additionally arranged in the water outlet zone to ensure the sludge collecting effect of the water outlet zone; and a sludge discharging pump is arranged in the sludge collecting hopper to promote sludge discharging. A biological membrane falling off from the aeration reaction zone enters a sludge passing channel through a first intercepting screen arranged at the bottom of the water inlet end of the aeration reaction zone and flows to the sludge collecting hopper in the sedimentation zone along the sludge passing channel. According to the invention, ammonia nitrogen, TP, COD and SS in the water to be treated can beremoved, and purification is achieved.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an MBBR system and an operation method for enhancing ammonia nitrogen treatment in a high-efficiency flocculation sedimentation tank. Background technique [0002] Ammonia nitrogen, COD and SS are routine control parameters in sewage treatment, and their discharge concentration is an important indicator to measure the effect of sewage treatment. At present, sewage treatment requires three-stage treatment in order to meet the discharge standard. Among them, influent SS and insoluble COD are mainly removed through primary treatment through sedimentation, filtration or proper aeration. Ammonia nitrogen and soluble COD are removed by aerobic oxidation through an aeration tank with activated sludge through secondary treatment. Gravity sedimentation is carried out; ordinary sewage still contains SS and COD which are difficult to biodegrade after secondary treatment, so it is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/5281C02F3/10C02F2203/006C02F2209/08C02F2209/10C02F2209/14C02F2303/14Y02W10/10
Inventor 吴迪韩文杰周家中黄子进管勇杰李凤达关闯李新利刘宜龙路晖
Owner QINGDAO SPRING WATER TREATMENT