Integrated internal circulation type denitrification and decarburization bio-membrane reactor and operating method thereof

A biofilm reactor, internal circulation technology, applied in aerobic and anaerobic process treatment and other directions, can solve the problems of large power consumption, high operating cost, low denitrification rate, etc., achieve low operating cost, reduce operating cost, The effect of low engineering cost

Inactive Publication Date: 2012-09-12
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] The technical problem of the first aspect to be solved by the present invention is to overcome the defects of large power consumption, high operating cost and low denitrification rate of the integrated biological denitrification reactor in the prior art, and it is a suitable solution for the denitrification of small and medium-sized domestic sewage or industrial waste water. Nitrogen and carbon removal treatment provides an integrated internal circulation denitrification and carbon removal biofilm reactor with energy saving, high efficiency denitrification, and small footprint

Method used

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  • Integrated internal circulation type denitrification and decarburization bio-membrane reactor and operating method thereof
  • Integrated internal circulation type denitrification and decarburization bio-membrane reactor and operating method thereof
  • Integrated internal circulation type denitrification and decarburization bio-membrane reactor and operating method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0085] Industrial wastewater with a small amount of water to be treated, such as printing and dyeing wastewater after coagulation and sedimentation pretreatment, belongs to wastewater with poor biodegradability. The integrated reactor provided by the invention is used for processing. Methods as below:

[0086] First, the pretreated raw water is lifted into the anoxic zone A through the water inlet pipe 1 by a lift pump. In the lower part of the anoxic zone A, the incoming water will first contact the filler 3. Due to the disturbing effect of the incoming water, the filler 3 below the anoxic zone will continuously roll up and down, so that the sludge deposited at the bottom of the anoxic zone is in a suspended state without dead ends, which is conducive to the full contact of mud and water . Then the water flows through the orifice plate 2A, and after being dispersed and cut, it enters into the top of the orifice plate 2A in a multi-point water inlet manner. Here, the raw w...

Embodiment 2

[0092] The urban domestic sewage with slightly larger water volume is treated, and the urban domestic sewage belongs to the nitrogenous sewage that needs to remove a small amount of phosphorus, and the integrated reactor provided by the invention is used for treatment. Methods as below:

[0093] First, determine the amount and efficiency of phosphorus and nitrogen removal required. Then use the lift pump to directly lift the pre-settled sewage into the anoxic zone A through the water inlet pipe 1 . Below the anoxic zone A, the domestic sewage first contacts the filler 3, and then enters the top of the orifice plate 2A. Here, the denitrifying bacteria degrade part of the organic matter as a carbon source during the denitrification process. The biodegradability of the sewage itself is very good, and the concentration of organic matter entering the anoxic zone is relatively high. Therefore, there is no need to add additional carbon sources in the anoxic zone. Moreover, the pH v...

Embodiment 3

[0098] Treatment of industrial wastewater, such as printing and dyeing wastewater pretreated by coagulation and sedimentation, should be treated with the integrated reactor provided by this patent. The steps are as in Example 1, and the final test enters the water quality of the printing and dyeing wastewater after the pretreatment of the integrated reactor, the organic matter COD cr The ammonia nitrogen is 225-322mg / L, the ammonia nitrogen is 24-28mg / L, the total nitrogen is 41-46mg / L, the color is 80-102 times, and the suspended matter SS is 84-115mg / L. In treated sewage, COD cr The ammonia nitrogen is 50-72mg / L, the ammonia nitrogen is 1.4-3.2mg / L, the total nitrogen is 7.0-13.1mg / L, the color is 22-33 times, and the suspended matter SS is 21-46mg / L. The denitrification efficiency reached 93.4%, COD cr The removal rate reached 72.7%, and the removal rates of chroma and suspended solids were 64.4% and 72.0%, respectively. It can be seen that the integrated anoxic-aerobic ...

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Abstract

The invention provides an integrated internal circulation type denitrification and decarburization bio-membrane reactor and an operating method thereof. The main body of the reactor consists of an anoxic zone on the lower part, an aerobic zone on the upper part and a settling zone on the periphery of the aerobic zone; a composite filler is filled in the anoxic zone, and a water inlet pipe is communicated with the bottom of the anoxic zone; the aerobic zone is partitioned into a filler zone for adding a carrier on the upper part and a mud-water mixing zone on the lower part by adopting an orifice plate, the anoxic zone and the aerobic zone are partitioned through an impermeable partition plate, and a plurality of aeration pipes are arranged at the bottom of the aerobic zone and provided with air inlet pores; and the settling zone consists of three parts, namely a clean water zone, a contact settling zone and a sludge returning zone which are sequentially arranged from top to bottom, wherein the bottom of the sludge returning zone is provided with a sludge returning seam and communicated with the bottom of the aerobic zone. The reactor realizes zero power consumption in sludge returning, and is compact in structure; and a back flushing system is not required in the contact settling zone, and additional agents and carbon sources are not required, so that the reactor is low in running cost.

Description

technical field [0001] The invention relates to environmental protection engineering equipment, in particular to an integrated internal circulation biofilm reactor for denitrification and carbon removal and an operation method thereof. Background technique [0002] With the rapid development of industrial technology, human civilization has brought not only progress and prosperity, but also serious water pollution. The treatment of domestic sewage and industrial wastewater in the world today is mostly carried out by physical, chemical or biological methods and then discharged into water bodies after reaching the standard. For discharge standards, my country's urban sewage treatment plants currently implement the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002), in which the first-level A standards for ammonia nitrogen and total nitrogen are 5mg / L and 15mg / L, respectively, while The ammonia nitrogen index of the secondary standard is 25mg / L. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 郭永福储金宇杨海华郝志胜沐涛曹宇
Owner SUZHOU UNIV OF SCI & TECH
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