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Integrated methane-producing denitrogenation dephosphorization desulfurization sewage treatment method and device thereof

A sewage treatment method, nitrogen and phosphorus removal technology, applied in biological sludge treatment, anaerobic digestion treatment, waste fuel, etc. Good quality effect, full contact effect

Inactive Publication Date: 2008-08-13
太原大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The present invention aims at the disadvantages of poor nitrogen and phosphorus removal effect of current anaerobic treatment technology, effluent has odor, and traditional anaerobic and aerobic combined process has complicated process, complicated management and still needs a large amount of aeration, and provides A compact structure, low initial investment and operating costs, good treatment effect, and flexible scale integrated methane production, nitrogen, phosphorus and sulfur removal process for sewage

Method used

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  • Integrated methane-producing denitrogenation dephosphorization desulfurization sewage treatment method and device thereof

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Effect test

Embodiment 1

[0055] The integrated methane-producing, nitrogen-removing, phosphorus- and sulfur-removing sewage treatment device of the present invention is shown in FIG.

[0056] The high-speed anaerobic granular sludge reactor 13 is made of plexiglass, and the whole reactor is divided into two parts: a reaction zone and a sedimentation zone. Among them, the inner diameter of the reaction zone is 100mm, the height is 1.7m, and the volume is 12.0L; the inner diameter of the precipitation zone is 140mm, the height is 0.6m, and the volume is 6.0L.

[0057] The sewage storage tank 1 is used to store sewage, and the backflow water storage tank 2 is used to store backflow water. They communicate with the water tank 10 through the water inlet pump 6 , the backflow pump 7 , and respective flowmeters 8 and valves 9 . An aeration head 3 is arranged in the sewage storage tank 1 and the return water storage tank 2 respectively, and the aeration head 3 is selectively aerated into the sewage storage ta...

Embodiment 2

[0070] The dewatered sludge from the digestion tank of a sewage treatment plant in Taiyuan was used for activity recovery and then inoculated into the experimental reactor. The domestic sewage was taken from a family area of ​​a university in Harbin, and the COD concentration of the sewage influent was 146-563mg / L. Using self-prepared beer wastewater, inoculate a small amount of granular sludge and municipal digested sludge into the reactor at a mass ratio of 1:6, start the operation at 35°C, maintain HRT3.4h, and reduce the influent COD from 200mg / L increased to 1000mg / L, influent load from 1.58kgCOD / m 3 ·d increased to 7.5kgCOD / m 3 d, Granular sludge was formed rapidly, the reactor was successfully started, the sludge concentration reached 32.7g / L, VSS / SS reached 0.66, and the COD removal rate reached 92%. If this reactor does not go through any adaptation process, it can directly treat the actual domestic sewage, and it can achieve good operation results: when the influent...

Embodiment 3

[0073] Take the dewatered sludge from the digestion tank of a sewage treatment plant in Taiyuan for activity recovery and inoculate it into the reactor used for the experiment. The beer wastewater is taken from a brewery in Taiyuan. The operation is started at 35°C, and the influent COD concentration is 867-3750mg / L. The formation of granular sludge is promoted by means of low influent concentration and high organic load. Low influent concentration of about 500mg / L, high influent flow rate of 3.0L / h, high return flow rate of 12L / h, high liquid rising velocity of 2.5m / h, 2.88kgCOD / m 3 · Run for a week under the condition of about d water inflow load. From the 7th day, in order to increase the methane-producing activity of the sludge and form a stable microbial community where various microorganisms such as acid-producing bacteria and methanogenic bacteria coexist as soon as possible, the influent flow rate was reduced to 0.9L / h, and the return flow rate was reduced to 0 , th...

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Abstract

The present invention provides an integrated produced methane denitriding and phosphorus-sulfur eliminating wastewater treating technique and the equipment thereof, the technique comprises leading the wastewater of the mixing water of wastewater and the reflux water into the high speed anaerobic particle sewage reactor from the bottom, and providing oxygen to the inner part of the reactor to keep the micro-aerobic state in the reactor and facilitate that the contaminant in the water is treated by the degradation of the particle sewage sludge. The present invention provides an environment in which the aerobic bacteria, anaerobium and amphimicrobe coexist and the oxidizing reaction and reducing reaction function together, the COD eliminating (producing methane) and denitriding and phosphorus-sulfur eliminating are simultaneously executed in a reactor, the eliminating efficiency of the contaminant is high and the stay time is short.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an integrated sewage treatment process for methane production, denitrification, phosphorus and sulfur removal and equipment thereof. Background technique [0002] In the past, as the main process of biological treatment of urban sewage or industrial wastewater, almost all aerobic treatment processes. But now the aerobic biological treatment technology is faced with huge energy consumption during aeration, and a large amount of excess sludge needs to be disposed of. The land occupied by the disposal of a large amount of excess sludge has caused long-term pollution, and the structures are open to operation and harmful gases escape. Issues such as air pollution have attracted people's attention. [0003] Anaerobic treatment technology is called environmental resource technology, which consumes the least resources and energy, and can obtain resources or energy from ...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F11/04
CPCY02E50/343Y02E50/30
Inventor 董春娟潘青业冯令艳邢金龙汪燕霞孙慧丽侯姝敏兰贵亭
Owner 太原大学
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