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A kind of integrated farm wastewater biological treatment reactor

A biological treatment and wastewater treatment technology, applied in the field of environmental engineering, can solve the problems of poor aerobic biodegradability of digestive juice, lower biodegradability of digestive juice, imbalance of nutrient ratio, etc., achieve high ammonia nitrogen removal efficiency, high organic load, Good effect of intercepting suspension

Active Publication Date: 2018-08-28
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention finds on the basis of data analysis and experiments that the COD removal rate can reach more than 70% when the wastewater from the farm is subjected to anaerobic digestion reaction, but the aerobic biodegradability of the digestive juice is very poor. Further experiments have found that the main cause of this phenomenon is The reason is that the degradation of various pollutants in the anaerobic digestion process is not synchronized, resulting in an imbalance in the ratio of nutrients such as C / N, which reduces the biodegradability of the digestive juice

Method used

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  • A kind of integrated farm wastewater biological treatment reactor
  • A kind of integrated farm wastewater biological treatment reactor

Examples

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Effect test

Embodiment 1

[0033] Example 1: Integrated high-efficiency biological treatment reactor for farm wastewater

[0034] Reactor plan view and sectional view of the present invention are as figure 1 As shown, it contains hydrolytic acidification zone (1), primary anaerobic zone (2), secondary anaerobic zone (3), aerated nitrosation zone (4), anammox zone (5), precipitation zone (6); wherein between the hydrolytic acidification zone (1) and the primary anaerobic zone (2), between the primary anaerobic zone (2) and the secondary anaerobic zone (3), between the secondary anaerobic zone (3) ) and the aerated nitrosation zone (4), between the aerated nitrosation zone (4) and the anammox zone (5), between the anammox zone (5) and the precipitation zone (6) There are baffles (8).

[0035] Wherein, the hydrolytic acidification zone (1) is directly connected with the anaerobic ammonium oxidation zone (5) through pipelines. The bottom of the hydrolytic acidification zone (1) is perforated and contains...

Embodiment 2

[0037] Embodiment 2: working principle

[0038] The present invention will be described in further detail below through examples, but not as a limitation of the present invention.

[0039] Such as figure 1As shown, what the present invention provides is a kind of reactor for treating farm waste water, the waste water enters the hydrolytic acidification zone (1) evenly through the perforated water distribution pipe at the bottom, and through the joint action of suspended and fixed microorganisms growing on the filler (7), the The macromolecular organic matter in the wastewater is hydrolyzed into small molecular organic matter; the hydrolyzed wastewater is divided, and part of it enters the primary anaerobic zone (2) through the baffle plate (8), and part of it enters the anaerobic ammonium oxidation zone (5); After being treated in the primary anaerobic zone, it enters the secondary anaerobic zone (3) under the guidance of the baffle plate (8); the waste water flows into the a...

Embodiment 3

[0040] Embodiment 3: the application of reactor

[0041] The integrated farm wastewater high-efficiency biological treatment reactor of the present invention is applied to the wastewater treatment of a certain dairy farm in Shanghai. The specific parameters are: flow rate Q=2L / d, hydrolytic acidification zone HRT=24h, primary anaerobic zone HRT=12h, Secondary anaerobic zone HRT = 12h, aerated nitrosation zone HRT = 12h, anammox oxygen zone HRT = 16h, precipitation zone HRT = 12h, total residence time of the reactor = 88h, the wastewater after hydrolysis and acidification enters anaerobic The ammonia oxidation zone and the primary anaerobic zone each account for half, and the dissolved oxygen in the nitrosation zone is controlled at 1mg / L. The monitoring results of influent and effluent water quality are shown in Table 1:

[0042] Table 1 Wastewater indicators before and after treatment

[0043]

[0044] In addition, the inventors have found through experiments that the de...

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Abstract

Disclosed is an integrated reactor for the biological treatment of livestock farm wastewater, sequentially comprising a hydrolytic acidification region (1), a primary anaerobic region (2), a secondary anaerobic region (3), an aeration nitrosation region (4), an anaerobic ammoxidation region (5) and a precipitation region (6). Further disclosed is a method for the treatment of livestock farm wastewater.

Description

technical field [0001] The invention relates to an integrated biological treatment reactor for farm wastewater, which belongs to the technical field of environmental engineering. Background technique [0002] With the rapid development of livestock and poultry breeding in my country, the output of poultry meat, pork, and eggs in China continues to increase. Large-scale farms can reduce farm costs and increase economic income. However, the scale has also caused excessive concentration of excrement and urine in the farm, which puts great pressure on the surrounding environment of the farm. The pollution situation of farm wastewater is very serious. How to efficiently treat farm wastewater and avoid the pollution of water and soil caused by the wanton discharge of wastewater has become an imminent and major problem. [0003] The main sources of farm wastewater: manure leachate, site flushing water and urine. It is characterized by complex components, high concentrations of or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F101/16
CPCC02F3/284C02F3/286C02F3/2866C02F2101/16C02F3/28Y02E50/30
Inventor 邹华刘青青朱荣
Owner JIANGNAN UNIV