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a kind of a 2 /o process improvement

A process, anaerobic pool technology, applied in the field of sewage treatment A2/O process, can solve the problems of carbon source shortage and difficulty in greatly improving denitrification removal rate, so as to improve utilization efficiency, avoid carbon source loss, and avoid denitrification The effect of nitrogen rate

Active Publication Date: 2022-02-08
ENVIRONMENTAL PROTECTION RES INST OF LIGHT IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main shortcomings are three points: first, it is impossible to optimize both denitrification and phosphorus removal at the same time; first, it is difficult to increase the removal rate of nitrogen removal significantly;

Method used

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  • a kind of a <sup>2</sup> /o process improvement
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  • a kind of a <sup>2</sup> /o process improvement

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Embodiment

[0015] In this embodiment, anaerobic pool 1, anoxic pool 2, aerobic pool 3, secondary settling pool 4, recoil pool 5, medium sinking pool 6, ammonia absorption pool 7, steady flow pool 8, nitrification pool 9, nitrification The pool 10 and the buffer pool 11 are composed; the ammonia absorption pool 7 has more than two grids, each grid is independent; the sewage runs according to the following steps:

[0016] Step 1, the sewage enters the anaerobic tank 1 to carry out the corresponding biochemical process; in the anaerobic tank 1, the reaction of anaerobic phosphorus release is mainly carried out, and the sludge returned from the secondary sedimentation tank 4 is aerobic after releasing phosphorus here. Phosphate ready. After the reaction, the mixed solution in the anaerobic pool 1 enters the anoxic pool 2 to carry out the corresponding biochemical process; Under the action of denitrifying bacteria, the organic carbon source is used to reduce it to N 2 . After the reaction,...

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Abstract

The invention discloses a 2 The improvement of / O process is composed of anaerobic tank, anoxic tank, aerobic tank, secondary sedimentation tank, recoil tank, intermediate sedimentation tank, ammonia absorption tank, steady flow tank, nitrification tank, nitrification tank and buffer tank; The ammonia absorption pool has more than two grids, and each grid is independent; the ammonia nitrogen in the sewage is adsorbed by using the zeolite’s adsorption effect on ammonia nitrogen, and the zeolite is individually nitrified and regenerated, so that the nitrification process can be carried out independently, avoiding the loss of carbon sources, and making The utilization efficiency of the carbon source is improved, and at the same time, the denitrification rate that is difficult to increase due to the limitation of the reflux ratio is avoided, so that the denitrification rate is improved.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a sewage treatment A 2 / O process. Background technique [0002] A 2 The / O process is a classic process for sewage treatment, and its process flow is shown in the attached drawing of the manual. figure 2 . This process has many advantages, but also has disadvantages. The main shortcomings are three points: first, it is impossible to optimize both denitrification and phosphorus removal at the same time; [0003] To this end, the technician on A 2 / O process, a lot of improvement work has been done, with pre-denitrification A 2 / O, invert A 2 / O, UCT, Phoredox and other processes. [0004] The characteristics of the zeolite in this patent for adsorbing ammonia nitrogen, for A 2 The / O process also made an improvement. Contents of the invention [0005] The technical problem to be solved by the present invention is to provide a 2 The improvement of / O process is characteriz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/10
Inventor 张建中梁爽
Owner ENVIRONMENTAL PROTECTION RES INST OF LIGHT IND