Denitrification deep-bed filter tank denitrification treatment system and method thereof

A nitrification deep bed and treatment system technology, applied in the field of denitrification deep bed filter denitrification treatment system, can solve the problems of increased pool depth and investment cost, poor uniformity of water distribution and gas distribution system, etc., to save investment costs, reverse Good flushing effect, accurate and reasonable dosage of carbon source

Pending Publication Date: 2020-09-15
北控水务(中国)投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a denitrification deep bed filter denitrification treatment system and method to solve the problem of increasing the depth and investment co

Method used

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  • Denitrification deep-bed filter tank denitrification treatment system and method thereof
  • Denitrification deep-bed filter tank denitrification treatment system and method thereof
  • Denitrification deep-bed filter tank denitrification treatment system and method thereof

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Embodiment 1

[0040] Such as figure 1 As shown, the present embodiment provides a denitrification deep bed filter denitrification treatment system, including a filter 4, and the filter 4 includes a superelevation zone, a filter water head zone, a filter material zone 9, Air-water distribution system 10 and water collecting channel. The air-water distribution system 10 includes a stainless steel screen 101 at the top and a pipeline 102 at the bottom, and the top of the pipeline 102 is connected to the stainless steel screen 101 . The top of the stainless steel filter screen 101 can directly support the filter material in the filter material area 9, and the pipeline 102 can extend to the water collection channel and communicate with the water collection channel, wherein the stainless steel filter screen 101 has a semicircular arc structure in longitudinal section. Preferably, the pipeline 102 has a columnar structure.

[0041] Preferably, the stainless steel filter screen 101 has a height o...

Embodiment 2

[0060] Such as image 3 As shown, this embodiment provides a denitrification deep-bed filter denitrification treatment method, and the treatment method is operated by the denitrification deep-bed filter denitrification treatment system described in Example 1. The treatment method includes a dosing process, a nitrogen driving process and a backwashing process within a filtration cycle.

[0061] Preferably, the dosing process includes obtaining the carbon source dosage value based on the influent flow rate, the influent nitrate nitrogen concentration, the dissolved oxygen content of the filter and the effluent nitrate nitrogen target value, and adding the obtained carbon source dosage value to the carbon Source mixing pool.

[0062] Preferably, the nitrogen removal process includes starting a nitrogen removal program based on the set nitrogen removal period.

[0063] Preferably, the backwashing process includes starting the backwashing procedure based on the opening of the out...

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Abstract

The invention provides a denitrification deep-bed filter tank denitrification treatment system and a method thereof. The invention relates to the technical field of sewage treatment systems. The problems that the tank depth is increased and the investment cost is increased due to the arrangement of a supporting layer in the existing denitrification deep-bed filter tank are solved; the technical problem of poor uniformity of a water and gas distribution system is solved. The system comprises a filter tank, wherein the filter tank comprises an ultrahigh area, a filter head area, a filter material area, a gas-water distribution system and a water collecting channel which are sequentially arranged from top to bottom; the gas-water distribution system comprises a stainless steel filter screen located at the upper part and a pipeline located at the lower part, a filter material is directly supported above the stainless steel filter screen, the pipeline extends to the water collecting channeland is communicated with the water collecting channel, and the longitudinal section of the stainless steel filter screen is of a semi-arc structure. According to the invention, the semi-arc stainlesssteel filter screen and the pipeline are used as a water distribution system for directly supporting the filter material, so that the arrangement of a supporting layer is omitted, and the height andinvestment cost of the filter tank are reduced. Meanwhile, the coverage area of the stainless steel filter screen is large, so that water distribution and gas distribution are more uniform.

Description

technical field [0001] The invention relates to the technical field of sewage treatment systems, in particular to a denitrification treatment system and method for a denitrification deep bed filter. Background technique [0002] With the advancement of the national ecological civilization strategy, sewage discharge standards have become more stringent, and urban sewage treatment standards have become a general trend. Among them, the deep removal of total nitrogen indicators is the key and difficult point. Denitrification deep bed filter is one of the technical options for deep denitrification, which has been widely studied and applied in recent years. Compared with other advanced treatment processes, the denitrification deep bed filter integrates filtration and denitrification functions, has a slight advantage in filter material maintenance cost and denitrification efficiency, and is relatively simple to manage. Moreover, the denitrification deep bed filter has advantages i...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/28C02F2203/006C02F2209/005C02F2303/14
Inventor 景香顺李鑫玮李凌云林虹李中杰孙海良王矩郭立宁
Owner 北控水务(中国)投资有限公司
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