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Quick start method of source water biological denitrification system

A technology for biological denitrification and rapid start-up, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. Saving resources, fast startup, good effect

Inactive Publication Date: 2012-10-03
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These three start-up methods are different in the cycle of film formation and the characteristics of the biofilm formed, but the treatment effects are basically the same when they reach stability after start-up
Drinking water source water usually has high dissolved oxygen content and low organic carbon content, so under normal conditions, it takes a long time for its denitrification to start

Method used

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  • Quick start method of source water biological denitrification system
  • Quick start method of source water biological denitrification system
  • Quick start method of source water biological denitrification system

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Embodiment

[0023] This embodiment adopts a self-made biofilm reactor, biofilm reactor or biofilter, made of plexiglass, with an inner diameter of 380mm, a height of 2000mm, and an effective volume of 200L; the biological denitrification system includes a heating rod 1, Flow pump 2, metering pump 3, circulation pump 4, reactor 5, replenishment tank 6 and circulation pipeline 7, see attached figure 1 ; Add ceramsite to the biofilm reactor as a growth carrier for denitrifying bacteria. The diameter of ceramsite is 2-3cm, the filling rate of the system is 80%, and the filling height is 1600mm; take 5L of reflow activated sludge with good properties from the urban sewage treatment plant , put 5L of activated sludge into the biological denitrification system, then add glucose oxidase 200 units / L, add glucose to make the concentration 160mg / L (C / N ratio is 6.6:1), inject the source water to be treated, The water quality of the source water is shown in Table 1; start the internal circulation pum...

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Abstract

The invention belongs to the technical field of environment-friendly water treatment, and relates to a quick start method of a drinking-water source water biological denitrification system. The quick start method comprises the steps of: selecting a biomembrane reactor, filling sand and the like in the biomembrane reactor, inoculating activated sludge as a denitrifying strain, and then supplementing the source water to be treated; adding glucose and glucose oxidase to the biomembrane reactor, adding glucose and glucose oxidase generating bacteria to the reactor, and adjusting and controlling the operating temperature of the biomembrane reactor to 15-35 DEG C; controlling pH at 7.0-8.5; starting an internal circulation pump to circulate for 3-5 cycles, and carrying out culture and domestication by adopting continuous water inflow; and when the dissolved oxygen in the biomembrane reactor decreases to less than 0.5mg / L, completing the start of the biological denitrification system, connecting to the source water to be treated for normal operation, and supplementing an organic carbon source according to the content of the organic carbon source in the source water. The method has the advantages that the reactor is simple in structure, the principle is reliable, the operating cost is low, the denitrification efficiency is high, the effect is good, environmental friendliness is achieved, resources are saved and the start speed is high.

Description

Technical field: [0001] The invention belongs to the technical field of environmental protection water treatment, and relates to a quick start-up method for a drinking water source water biological denitrification system, which is suitable for biological denitrification of lake water, reservoir water and groundwater fresh water drinking water source water. Background technique: [0002] With the rapid development of industrial and agricultural production, the environmental resources that human beings rely on for survival are impacted by various pollutions, nitrogen being one of them. Nitrogen pollution in various water environments is one of the main causes of eutrophication in drinking water sources (lakes, reservoirs, etc.), which has become a worldwide environmental problem and has attracted more and more attention. Nitrogen in surface water and groundwater is mainly ionic nitrogen, mainly nitrate nitrogen, followed by ionic ammonia nitrogen and nitrite nitrogen. Salt po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/34
Inventor 宋志文钱生财刘伶俐冯梦雪
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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