Sewage deep denitrification biochemical pool

A biochemical pool and sewage technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems that cannot meet the nitrogen and phosphorus removal of sewage, and achieve the increase of attachment points and the removal efficiency High, easy film hanging effect

Active Publication Date: 2022-03-18
HEBEI HAIYING SECURITY TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main A / O biochemical pools, A2 / O biochemical pools, oxidation ditch biochemical pools, SBR biochemical pools, MSBR biochemical pools, etc. are commonly used. However, with the increasing amount of sewage discharge and stricter discharge standards, Existing biochemical pools can no longer meet the needs of sewage nitrogen and phosphorus removal

Method used

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  • Sewage deep denitrification biochemical pool
  • Sewage deep denitrification biochemical pool
  • Sewage deep denitrification biochemical pool

Examples

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Embodiment 1

[0059] This embodiment provides a sewage deep denitrification biochemical pool, which is composed of a pre-anoxic pool, anaerobic pool, anoxic pool, and aerobic pool connected in sequence. The sewage from the aerobic pool flows back into the anoxic pool with a reflux ratio of 150 %;

[0060] Among them, the bamboo charcoal / polyurethane composite filler after the activated sludge has been domesticated and film-coated is added to the anaerobic pool and the anoxic pool.

[0061] Described bamboo charcoal / polyurethane composite filler is prepared through following method:

[0062] 1) After mixing 8mL of toluene and 2mL of ethanol, put 1g of bamboo charcoal into it, extract it after 30min, grind it to 150 mesh, then put it into 8mL of acidic solution, stir at 40°C for 1h, take it out, wash it with water, and dry it in vacuum to obtain activated bamboo charcoal; The acid solution comprises 20wt% nitric acid, 3.5wt% tartaric acid;

[0063] 2) 150g of ethylene glycol polyether polyo...

Embodiment 2

[0071] The present embodiment provides another kind of biochemical tank for deep denitrification of sewage. The difference from Example 1 is that in the step 2) of preparing bamboo charcoal / polyurethane composite filler, DL-malic acid dihydrazide, 5-(N-cyclopropyl ) The addition amount of amide acid anhydride is 0.6g, 0.05g respectively; Others are all the same.

[0072] This embodiment also provides a method for treating sewage by using the above-mentioned deep denitrification biochemical pool for sewage, the steps of which are basically the same as those in Example 1.

Embodiment 3

[0074] The present embodiment provides another kind of biochemical tank for deep denitrification of sewage. The difference from Example 1 is that in the step 2) of preparing bamboo charcoal / polyurethane composite filler, DL-malic acid dihydrazide, 5-(N-cyclopropyl ) The addition amount of amide acid anhydride is 1g, 0.2g respectively; Others are all the same.

[0075] This embodiment also provides a method for treating sewage by using the above-mentioned deep denitrification biochemical pool for sewage, the steps of which are basically the same as those in Example 1.

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Abstract

The invention provides a sewage deep denitrification biochemical pool, and belongs to the technical field of sewage treatment.The sewage deep denitrification biochemical pool is composed of a pre-anoxic pool, an anaerobic pool, an anoxic pool and an aerobic pool which are sequentially communicated, compared with a traditional deep denitrification process, bamboo charcoal / polyurethane composite filler is added into the anaerobic pool and the anoxic pool, and the anaerobic pool and the aerobic pool are communicated in sequence; the biofilm has the advantages of good biocompatibility, easy biofilm formation, good adsorbability, high removal efficiency of organic pollutants such as BOD, ammonia nitrogen and heavy metals, and good pressure resistance, and can realize deep denitrification of sewage.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a deep sewage denitrification biochemical pool. Background technique [0002] With the rapid development of urbanization, the discharge of urban sewage, domestic sewage, industrial sewage, etc. has increased year by year. Sewage contains a large amount of nitrogen (N), phosphorus (P) and other nutritional inorganic salts, which are discharged into natural water bodies without treatment. It will cause great harm, mainly in the following aspects: 1. Eutrophication of water body, leading to the death of other aquatic organisms and destroying the water ecological environment; 2. Endangering the survival of animals and plants, causing hypoxic poisoning of animals, etc.; 3. Affecting humans health, induce cancer, and even endanger life. Therefore, the effective removal of nitrogen and phosphorus in sewage is of great significance for reducing pollution and controlling eutroph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/30C02F101/16C02F101/20C02F101/30
CPCC02F3/2806C02F3/30C02F2101/16C02F2101/30C02F2303/02C02F2101/20Y02W10/10
Inventor 郑光凤路青杜栋孙茜刘会青张艳丽
Owner HEBEI HAIYING SECURITY TECH ENG
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