Method for treating wastewater from livestock and poultry breeding by constructing vertical flow artificial wetland based on water supply plant sludge

A technology for water supply plant sludge and aquaculture wastewater, which is applied in water/sludge/sewage treatment, biological water/sewage treatment, sustainable biological treatment, etc. It can solve the problem of continuous and stable treatment effect and poor adsorption performance of unfavorable constructed wetland systems. problems, to achieve the effect of reducing disposal costs, low cost, and convenient operation

Active Publication Date: 2014-06-25
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

Traditional constructed wetland fillers (such as soil, sand, gravel, etc.) have poor adsorption performance, which is not conducive to maintaining the continuous and stable treatment effect of the entire constructed wetland system

Method used

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  • Method for treating wastewater from livestock and poultry breeding by constructing vertical flow artificial wetland based on water supply plant sludge
  • Method for treating wastewater from livestock and poultry breeding by constructing vertical flow artificial wetland based on water supply plant sludge
  • Method for treating wastewater from livestock and poultry breeding by constructing vertical flow artificial wetland based on water supply plant sludge

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Embodiment Construction

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] Using waste sludge from a water treatment plant as raw material, the content of iron and aluminum in the sludge is 100 and 50mg·g respectively -1 , the specific surface area is 78.8m 2 g -1 . After the sludge from the water supply plant is dried and crushed, particles with a particle size of 1 to 2 cm are selected as filling materials for the constructed wetland. The constructed wetland is composed of polyethylene columns with an inner diameter of 9cm and a height of 80cm. Fill the bottom section of the column with clean stones as a supporting layer, and the filling height is 10cm; then fill it with the prepared sludge from the water supply plant Upper section, packing layer height 60cm( figure 1 ). The quality of filling sludge from the water supply plant is 2.85kg (water content 10.82%), the effective volume V of the co...

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Abstract

The invention discloses a method for treating wastewater from livestock and poultry breeding based on a vertical flow artificial wetland with water supply plant sludge as fillers, belonging to the technical field of wastewater treatment. The method is characterized in that water supply plant sludge is dried and crushed as fillers to construct a vertical flow artificial wetland for treating high-concentration wastewater from livestock and poultry breeding, wastewater from livestock and poultry breeding is allowed to enter the artificial wetland by stages and discharged out from the system for a certain hydraulic retention time under the condition of intermittent aeration. The pollutants such as organic substances, nitrogen and phosphorus in wastewater can be effectively removed by the treatment method disclosed by the invention and the total removal rates of ammonia nitrogen and total phosphorus are higher than 90%. According to the method disclosed by the invention, the problem of a way out for water supply plant sludge is also solved while wastewater from livestock and poultry breeding is effectively treated, and thus the method is conducive to achieving a purpose of "treatment of wastes with processes of wastes" and is in line with the concept of circular economy and sustainable development.

Description

technical field [0001] The invention belongs to the technical field of water pollution control engineering sewage treatment, and in particular relates to a method for treating aquaculture wastewater in a vertical flow artificial wetland using sludge from a water supply plant as a filler. Background technique [0002] With the rapid development of large-scale aquaculture, the pollution of aquaculture wastewater is becoming more and more serious. The characteristics of livestock and poultry breeding wastewater are high suspended solids, high organic matter and high ammonia nitrogen, and are highly biodegradable. At present, conventional anaerobic-eutrophic combined process or SBR treatment process is usually used for large-scale aquaculture wastewater treatment. Such as application (patent) No. 201210493586.0 relates to a kind of aerobic reactor that adopts semi-fixed carrier to process livestock and poultry breeding wastewater; Treatment method; Application (patent) No. 201...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 裴元生刘娟凤王昌辉
Owner BEIJING NORMAL UNIVERSITY
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