Comprehensive treatment method for livestock and poultry breeding wastewater

A technology for comprehensive treatment of livestock and poultry breeding wastewater, applied in the field of livestock and poultry wastewater treatment, can solve the problems of inability to meet wastewater treatment requirements, large area for forest restoration treatment, single biogas utilization method, etc., and achieves high energy recovery and utilization rate. The effect of improving energy recovery rate and strong impact resistance

Inactive Publication Date: 2016-09-21
FUJIAN YUYI ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Returning fields and forests covers a large area, and is affected by weather and seasons, which cannot meet the wastewater treatment requirements of large-scale farms; traditional anaerobic + aerobic biological treatm

Method used

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  • Comprehensive treatment method for livestock and poultry breeding wastewater
  • Comprehensive treatment method for livestock and poultry breeding wastewater
  • Comprehensive treatment method for livestock and poultry breeding wastewater

Examples

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Example Embodiment

[0039] Example 1

[0040] For the waste water discharge from the livestock and poultry breeding plant A, the comprehensive treatment method for livestock and poultry breeding wastewater of the present invention is adopted, and the specific steps are as follows:

[0041] (1) After the conventional solid-liquid separation pretreatment, the aquaculture wastewater flows into the anaerobic pond for anaerobic reaction, and the reaction time is 7d;

[0042] (2) The effluent from the anaerobic pond enters the reaction tank, and after adding the wastewater treatment agent to the reaction tank for reaction 6, it enters the sedimentation tank for sedimentation for 2 hours;

[0043] (3) The effluent from the sedimentation tank will be discharged up to the standard after being intensified by the ecological pond.

[0044]The raw materials of the waste water treatment agent in step (2), in parts by weight, include: 45 parts of blast furnace slag, 22 parts of sodium carbonate, 10 parts of po...

Example Embodiment

[0052] Example 2

[0053] The waste water from the livestock and poultry breeding plant B is discharged, and the comprehensive treatment method of the livestock and poultry breeding wastewater of the present invention is adopted, and the specific steps are as follows:

[0054] (1) After the conventional solid-liquid separation pretreatment, the aquaculture wastewater flows into the anaerobic pond for anaerobic reaction, and the reaction time is 10d;

[0055] (2) The effluent from the anaerobic pond enters the reaction tank, and after adding the wastewater treatment agent to the reaction tank for 12 hours, it enters the sedimentation tank for sedimentation for 4 hours;

[0056] (3) The effluent from the sedimentation tank will be discharged up to the standard after being intensified by the ecological pond.

[0057] The raw materials of the waste water treatment agent in step (2) include: 55 parts by weight of blast furnace slag, 25 parts of sodium carbonate, 15 parts of polydi...

Example Embodiment

[0065] Example 3

[0066] For the waste water discharge from the livestock and poultry breeding plant C, the comprehensive treatment method for livestock and poultry breeding wastewater of the present invention is adopted, and the specific steps are as follows:

[0067] (1) After the conventional solid-liquid separation pretreatment, the aquaculture wastewater flows into the anaerobic pond for anaerobic reaction, and the reaction time is 8d;

[0068] (2) The effluent from the anaerobic pond enters the reaction tank, and after adding the wastewater treatment agent to the reaction tank for 9 hours, it enters the sedimentation tank for sedimentation for 3 hours;

[0069] (3) The effluent from the sedimentation tank will be discharged up to the standard after being intensified by the ecological pond.

[0070] The raw materials of the waste water treatment agent in step (2) include: 50 parts by weight of blast furnace slag, 23 parts of sodium carbonate, 12 parts of polydimethyldia...

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Abstract

The invention discloses a comprehensive treatment method for livestock and poultry breeding wastewater. Breeding wastewater flows through an anaerobic pond, a reaction tank, a sedimentation tank and an ecological pond after being subjected to solid-liquid separation pretreatment, and then outlet water is drained after reaching the standard. A wastewater treatment agent is added in the reaction tank and is prepared from, by weight, 45-55 parts of blast furnace slag, 22-25 parts of sodium carbonate, 10-15 parts of poly dimethyl diallyl ammonium chloride, 6-9 parts of titanium dioxide, 8-10 parts of activated carbon, 3-5 parts of zeolite powder and 70-80 parts of water. By means of the method, C, N and P in wastewater are effectively removed, outlet water stably reaches the standard, the average removal rate of COD can reach 99% or above, the removal rate of ammonia nitrogen can reach 97% or above, the removal rate of total phosphorus can reach 99% or above, the recycling rate of energy is high, and operation is stable; the ecological pond treatment method has the basic advantages that pollution transfer is avoided, emission reduction is guaranteed, full ecologic coverage is achieved, and full biological treatment is achieved, and complete treatment of wastewater, sludge and dirt is achieved.

Description

technical field [0001] The invention belongs to the field of livestock and poultry wastewater treatment, and in particular relates to a comprehensive treatment method for livestock and poultry breeding wastewater. Background technique [0002] With the improvement of residents' living standards, the increase in demand for meat promotes the vigorous development of aquaculture, which leads to a sharp increase in the emission of pollutants from the aquaculture industry. According to the analysis of the "First National Pollution Source Survey Bulletin" released in February 2010, livestock and poultry The COD and ammonia nitrogen emissions from the breeding industry are 12.6826 million tons and 717,300 tons respectively, accounting for 41.9% and 41.5% of the national COD and ammonia nitrogen emissions. [0003] At present, the main treatment modes of aquaculture wastewater are returning to fields, returning to forest resources, recycling and anaerobic + aerobic biological treatme...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/20
CPCC02F9/00C02F3/28C02F3/301C02F3/32C02F2103/20C02F2203/006
Inventor 杨圣云黄伟萱廖斌斌兰秋生王国宁宁松进肖君华
Owner FUJIAN YUYI ENVIRONMENT TECH CO LTD
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