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A d-a2/o wastewater treatment reactor with alternate two-phase anaerobic and anoxic operation

An alternate operation, D-A2 technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc. The effect of improving and saving operating costs

Inactive Publication Date: 2015-11-25
YUXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

D-A 2 The research on the / O reactor has not been reported yet, and it is the first of its kind

Method used

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  • A d-a2/o wastewater treatment reactor with alternate two-phase anaerobic and anoxic operation
  • A d-a2/o wastewater treatment reactor with alternate two-phase anaerobic and anoxic operation
  • A d-a2/o wastewater treatment reactor with alternate two-phase anaerobic and anoxic operation

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Embodiment Construction

[0027] Below in conjunction with specific embodiment, further describe the present invention.

[0028] A two-phase anaerobic-anoxic alternating operation D-A 2 O sewage treatment reactor, it is characterized in that comprising water tank 1, acidification pond 2, anaerobic pond 4, anoxic pond 5, aerobic pond 7 and secondary settling pond 9, the domestic sewage in described water tank 1 passes through acidification successively by pump Pond 2, anaerobic pond 4, anoxic pond 5, aerobic pond 7 and secondary settling pond 9 obtain clean water from water outlet 15, and sludge is discharged by the sludge outlet 14 of secondary settling pond 9.

[0029]The acidification tank 2 has a suspended film-hanging filler 3, the anaerobic tank 4 and the anoxic tank 5 both have an agitator 6, and the aerobic tank 7 has an aeration head 8.

[0030] There is a mixed liquid return pump 11 between the aerobic tank 7 and the anoxic tank 5, and the return liquid is returned to the anoxic tank 5; there...

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Abstract

The present invention relates to a D-A2 / O sewage treatment reactor with two-series of anaerobic-anoxic alternate operations. The D-A2 / O sewage treatment reactor is characterized by comprising a water tank (1), an acidification tank (2), an anaerobic tank (4), an anoxic tank (5), an aerobic tank (7), and a secondary sedimentation tank (9). The D-A2 / O reactor provided in the present invention has the technical advantages of high nitrogen and phosphorus removal effect, stable effluent quality, small excess sludge yield and the like.

Description

technical field [0001] The patent of the present invention relates to a sewage treatment reactor. Background technique [0002] A 2 / O and SBR are common processes with high denitrification and dephosphorization efficiency. In comparison, the development of SBR is limited due to its high automation control and intermittent water discharge. Traditional A 2 The principle of nitrogen and phosphorus removal by / O process is not complicated. The anaerobic, anoxic and aerobic three-stage process formed by the improvement of traditional activated sludge can not only effectively remove organic matter, but also simultaneously remove nitrogen and phosphorus. But existing A 2 / O also has the problem that it is difficult to further significantly improve the efficiency of nitrogen and phosphorus removal. There are two reasons for this: (1) there is a problem of carbon source competition between nitrogen and phosphorus removal; (2) the ability of microorganisms to release and absorb p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
CPCC02F3/286C02F3/2806C02F3/305C02F3/308
Inventor 叶长兵周志明李涛
Owner YUXI NORMAL UNIV
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