Rural domestic breeding mixed sewage treatment integrated system

A mixed sewage and integrated system technology, applied in the field of water treatment, can solve problems such as difficult to achieve treatment efficiency and operating costs, pollute receiving water bodies, endanger human health, etc., achieve sewage discharge standards, increase microbial biomass, and reduce pollution loads Effect

Inactive Publication Date: 2016-05-25
UNIV OF SCI & TECH BEIJING +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In some rural areas in China, there are problems of scattered breeding of livestock and poultry, and mixed living of humans and animals. Most of the wastewater from livestock and poultry breeding is mixed with domestic sewage and discharged directly, which seriously pollutes receiving water bodies, endangers human health, and destroys the ecological environment.
[0003] The concentration of pollutants in rural domestic breeding mixed sewage is between breeding wastewater and domestic sewage. There are many treatment technologies for single livestock and poultry breeding wastewater or domestic sewage, but it is difficult to achieve treatment efficiency and operational efficiency by simply applying breeding wastewater or domestic sewage treatment technologies. cost optimization

Method used

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  • Rural domestic breeding mixed sewage treatment integrated system
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  • Rural domestic breeding mixed sewage treatment integrated system

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Embodiment 1

[0030] The integrated system of the present invention is used to treat the mixed domestic sewage of a village in Shangguan Town, Dali City, Yunnan Province. The daily treatment capacity is 55 tons, the hydraulic retention time of the contact anaerobic tank is 36 hours, and the surface load of the single-stage gravel bed is 0.772m 3 / (m 2 d), the empty bed residence time is 22.5h, and the surface compound of the natural aerated soil purification tank is 0.125m 3 / (m 2 · d), the depth of the pool is 0.8m. The influent water quality is COD1494.50mg / L, TN156.90mg / L, TP11.45mg / L, the effluent COD is 23.67mg / L, TN is 2.54mg / L, and TP is 0.42mg / L. The removal rates were 98.4%, 98.4% and 96.3%, respectively.

Embodiment 2

[0032] The integrated technology of the present invention is used to treat the mixed domestic sewage of a village in Shangguan Town, Dali City, Yunnan Province, with a daily treatment capacity of 40 tons, a hydraulic retention time of 36 hours in contact with anaerobic tanks, and a surface load of a single-stage gravel bed of 0.581 m 3 / (m 2 d), the empty bed residence time is 30.9h, and the surface compound of the natural aerated soil purification tank is 0.122m 3 / (m 2 · d), the depth of the pool is 0.8m. The influent water quality is COD2059.30mg / L, TN195.36mg / L, TP15.21mg / L, the effluent COD is 36.95mg / L, TN is 9.65mg / L, and TP is 0.39mg / L. The removal rates were 98.2%, 95.1% and 97.4%.

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Abstract

The invention provides a rural domestic breeding mixed sewage treatment integrated system, and belongs to the technical field of water treatment. The system comprises a water collection well, an oil-separating tank, a contact anaerobic tank, a gravel bed, a regulating tank and a natural oxygen enriched soil purification tank which are sequentially connected by virtue of pipelines. The technical flow of the system comprises: mixed sewage flows through the oil separator, the contact anaerobic tank, the multi-stage gravel bed and the natural oxygen enriched soil purification tank, and is drained. According to the system, sewage natural flow can be implemented by reasonably laying sewage treatment facilities for villages distributed along slopes, external force is not needed, and operation cost is not generated; for flat-relief villages, sewage only needs once lifting in a submersible sewage pump, is treated in various treatment systems, and is drained. The integration technology has the advantages of convenient construction, simple operation, low operation cost, high treatment efficiency and the like, is easy to manage and maintain, and is suitable for rural areas with more breeding.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an integrated system for treating mixed sewage of rural life and farming. Background technique [0002] In some rural areas in China, there are problems of scattered breeding of livestock and poultry, and mixed living of humans and animals. Most of the wastewater from livestock and poultry breeding is mixed with domestic sewage and discharged directly, which seriously pollutes receiving water bodies, endangers human health, and destroys the ecological environment. [0003] The concentration of pollutants in rural domestic breeding mixed sewage is between breeding wastewater and domestic sewage. There are many treatment technologies for single livestock and poultry breeding wastewater or domestic sewage, but it is difficult to achieve treatment efficiency and operational efficiency by simply applying breeding wastewater or domestic sewage treatment technologies. Cost optim...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F1/40C02F3/28C02F3/30C02F3/32
Inventor 马方曙周北海袁蓉芳
Owner UNIV OF SCI & TECH BEIJING
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