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Livestock and poultry breeding waste water treatment method

A livestock and poultry breeding wastewater and treatment method technology, applied in the field of wastewater treatment, can solve problems such as slag content, high concentration of organic matter and nitrogen and phosphorus, high management and operation costs, and immature treatment technology, so as to improve economic value and reduce treatment costs. Cost, effect of simplifying processing steps

Inactive Publication Date: 2015-12-23
TONGREN CITY WANSHAN DISTRICT WANXING RARE BIRD ECOLOGICAL FARMING FARMER PROFESSINAL COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the volume of livestock and poultry wastewater fluctuates greatly, the slag content, organic matter and nitrogen and phosphorus concentrations are high, the treatment technology is not mature enough, and the management and operation costs are high
At present, many large-scale farms in my country have carried out the treatment of livestock and poultry breeding wastewater, but most of the wastewater treatment effluent quality of large-scale farms has not yet reached the national first-level discharge standards, far less than half of the industrial wastewater treatment compliance rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for treating livestock and poultry breeding wastewater, the method comprising the following steps:

[0021] a. Sedimentation treatment: discharge the livestock and poultry breeding wastewater to be treated into the sedimentation tank, add organic flocculant according to 1% of the influent quality, and stir evenly with a stirrer while adding the flocculant. After the flocculant is added, Stand still for 12 hours, then carry out solid-liquid separation to obtain supernatant liquid and sludge;

[0022] b. Composting treatment: Mix and stir the separated sludge with rapeseed dregs and bean dregs at a mass ratio of 20:7:3 to form a compost heap with a height of 1.5m, carry out fermentation and decomposing treatment, and then granulate to obtain fertilizer;

[0023] c. Heat treatment: After heating the obtained supernatant to 30°C, enter the anaerobic hydrolysis tank for anaerobic digestion treatment, and the hydraulic retention time is 3h;

[0024] d. Anaerobic am...

Embodiment 2

[0028] A method for treating livestock and poultry breeding wastewater, the method comprising the following steps:

[0029] a. Sedimentation treatment: discharge the livestock and poultry breeding wastewater to be treated into the sedimentation tank, add an organic flocculant according to 2% of the influent quality, and stir evenly with an agitator while adding the flocculant. After the addition of the flocculant is completed, Stand still for 24 hours, then carry out solid-liquid separation to obtain supernatant liquid and sludge;

[0030] b. Composting treatment: Mix and stir the separated sludge with rapeseed dregs and bean dregs at a mass ratio of 20:7:3 to form a 2.0m high compost heap, carry out fermentation and decomposing treatment, and then granulate to obtain fertilizer;

[0031] c. Heat treatment: After heating the obtained supernatant to 40°C, enter the anaerobic hydrolysis tank for anaerobic digestion treatment, and the hydraulic retention time is 8h;

[0032] d....

Embodiment 3

[0036] A method for treating livestock and poultry breeding wastewater, the method comprising the following steps:

[0037] a. Sedimentation treatment: discharge the livestock and poultry breeding wastewater to be treated into the sedimentation tank, add an organic flocculant according to 1.5% of the influent quality, and stir evenly with a stirrer while adding the flocculant. After the addition of the flocculant is completed, Stand still for 18 hours, then carry out solid-liquid separation to obtain supernatant liquid and sludge;

[0038] b. Composting treatment: Mix and stir the separated sludge with rapeseed dregs and bean dregs at a mass ratio of 20:7:3 to form a compost heap with a height of 1.8m, ferment and decompose, and then granulate to obtain fertilizer;

[0039] c. Heat treatment: After heating the obtained supernatant to 35°C, enter the anaerobic hydrolysis tank for anaerobic digestion treatment, and the hydraulic retention time is 6h;

[0040] d. Anaerobic ammo...

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PUM

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Abstract

The invention discloses a livestock and poultry breeding waste water treatment method. The livestock and poultry breeding waste water treatment method comprises the following steps: carrying out sedimentation treatment, composting, heating, carrying out anaerobic ammonia oxidation, carrying out secondary sedimentation treatment, separating and discharging. The livestock and poultry breeding waste water treatment method has the advantages that firstly livestock and poultry breeding waste water is separated and then respectively treated; sludge is separated and then subjected to composting, so that the sludge can be effectively recycled, economic value is increased, and treatment cost is reduced; meanwhile, upper not-good liquor obtained through separation is subjected to heating, anaerobic ammonia oxidation and secondary sedimentation treatment and then can be discharged, so that a treatment process is simplified, and efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a treatment method for livestock and poultry breeding wastewater. Background technique [0002] In recent years, with the adjustment of my country's agricultural structure and the advancement of agricultural industrialization, the large-scale and intensive livestock and poultry breeding industry has developed rapidly and has become an important part of my country's agricultural and rural economy. However, the development of these farms not only meets the large demand of urban residents for meat, poultry and eggs, but also becomes an important source of pollution to pollute water bodies. The annual discharge of wastewater from livestock and poultry farming in my country exceeds 10 billion tons, far exceeding the total discharge of industrial wastewater and domestic wastewater in the country. At the same time, the volume of livestock and poultry wastewater fluctuates ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C05F15/00C05F17/00C02F103/20
CPCY02W30/40
Inventor 杨胜堂
Owner TONGREN CITY WANSHAN DISTRICT WANXING RARE BIRD ECOLOGICAL FARMING FARMER PROFESSINAL COOP