Aeration biological filter bed and sewage advanced treatment method thereof

A technology of aerated biological filter bed and microporous aerator, which is applied in the field of water treatment, can solve the problems of biofilm aerated filter clogging, etc., and achieve the effects of high processing load, long service life and simple control

Active Publication Date: 2012-11-21
大连浩海水处理技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The further object of the invention of the present invention is to solve the clogging and maintenance problems of the existing biofilm aerated filter (BAF), so that the debugging and operation of the equipment are simple and convenient

Method used

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  • Aeration biological filter bed and sewage advanced treatment method thereof
  • Aeration biological filter bed and sewage advanced treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A certain aquatic product processing wastewater, with a treatment volume of 120t / d, adopts the following process:

[0052]

[0053] Raw water quality: COD≤2000mg / L, BOD≤800mg / L, SS≤350mg / L, TN≤60mg / L, TP≤8mg / L Oily substances: 80mg / L

[0054] FBAF influent water quality is COD≤300mg / L, BOD≤80mg / L, NH 3 ≤20mg / L, SS≤200mg / L, effluent requires COD≤100mg / L BOD≤30mg / L SS≤70mg / L TN≤20mg / L, FBAF equipment adopts modified HH-FBMP filler, which has a huge specific surface area, Can reach 80000m 2 / m 3 , after modification, microorganisms are easy to attach and grow, and can effectively remove COD and NH 4 + -N. Aeration is required for this equipment to operate. Effectively remove the remaining COD and NH after passing through this equipment 4 + -N. The diameter of the equipment is 1.2 meters, the height is 4.5 meters, and the thickness of the packing is 1.8 meters. The equipment is made of polymer materials for corrosion protection. Design pool capacity load 20kgCO...

Embodiment 2

[0057] A certain aquatic wastewater, the effluent from the biochemical tank directly enters this equipment, the FBAF equipment adopts our modified HH-FBMP filler, the thickness is 3 meters, the daily treatment capacity is 200t / d, the air-water ratio is adjusted to 6:1, there is no backflow, and the film is formed naturally During the period (the 3rd day after the system was started), the influent COD was 450mg / l. After two cycles of circulation treatment, the effluent detected COD 97mg / L, suspended solids: 8mg / L, and after one week of operation, the effluent reached COD 37mg / L, suspended solids: 8mg / L L, the effluent fully meets the first-level discharge standard in the "Comprehensive Sewage Discharge Standard GB8978-98", the suspended solids in the effluent meet the reuse standard, and meet the first-level A discharge standard in the "Pollutant Discharge Standard for Urban Sewage Treatment Plant GB18918-2002", To achieve the purpose and requirements of sewage treatment resourc...

Embodiment 3

[0059] A certain paint wastewater, the effluent from the biochemical pool directly enters this equipment, the daily treatment capacity is 2t / d, the air-water ratio is adjusted to 10:1, the return flow can be increased first and then decreased, and gradually decreased from 100% to 50%. The FBAF equipment adopts our Modified HH-FBMPHEA filler, the thickness of the filler is 5 meters, the commissioning is completed and started, after 10 days of operation, the influent COD is 860mg / l, the treated effluent COD is 95mg / L, and the suspended matter is less than 10mg / L, which meets the "Comprehensive Wastewater Discharge Standard GB8978-98" The medium-level discharge standard, the suspended solids in the effluent meet the reuse standard. No backwashing once. It was originally planned that the equipment should be backwashed every 2 days, the amount of backwashed gas should be increased by 3 times, the amount of water should be doubled, and the backwashed water will enter the biochemical...

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Abstract

The invention discloses an aeration biological filter bed and a sewage advanced treatment method thereof. The water distribution facility of the aeration biological filter bed comprises an upper water distribution plate and a lower water distribution plate, wherein the upper water distribution plate and the lower water distribution plate are fixed by porous plates, and the filler is fibrous filler. The structure solves the problem of choking, can not clamp the plates or rotate, does not generate a fault or unstable operation, and does not need maintenance. The advanced purification method forpollutants in the water body by using the aeration biological filter bed comprises the following steps: making the fibrous filler to the height of 2-10 meters, forming membranes of microbes, startingthe aeration biological filter bed, regulating the gas-water ratio, processing the biochemical wastewater by the aeration biological filter bed, leading the biochemical wastewater to enter the lower water distribution plate and the lower porous plate orderly via the water distribution facility so as to react with the filler, enabling the water to enter the water outflow facility via the upper porous plate, and discharging; and flushing back. The sewage advanced treatment method by using the aeration biological filter bed has the advantages of high processing load, high efficiency, stable quality of outflow water, fewer suspended matters in outflow water, area saving, convenient control and operation, and high inoculation speed, and can be combined with various technologies.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to an advanced biological treatment and purification equipment for pollutants in water bodies, and also relates to an advanced biological treatment and purification method for water body pollutants. Background technique [0002] The advanced treatment of sewage plays a very important role in the reuse and treatment of urban and industrial sewage. After traditional biological treatment, advanced treatment is used to remove additional pollutants, specific metals, and other harmful components. The existing advanced treatment methods include physical and biochemical methods such as media filtration, adsorption, membrane technology, advanced oxidation and disinfection, but they have problems such as large investment, large floor space, and high operating costs, which limit their application and development. [0003] Commonly used biochemical sewage advanced treatment methods include advan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/02C02F3/10
CPCY02W10/10
Inventor 黄昊
Owner 大连浩海水处理技术有限公司
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