Method for reducing and controlling wastewater pollution of pig farm

A technology for pig farms and wastewater, applied in the field of agricultural environment, can solve the problems of direct discharge of waste pollutants, accumulation and loss of nitrogen and phosphorus in farmland, etc.

Inactive Publication Date: 2013-10-23
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
View PDF11 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because my country's current planting industry and aquaculture industry are seriously out of touch, the excessive application of nitrogen and phosphorus chemical fertilizers in...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing and controlling wastewater pollution of pig farm
  • Method for reducing and controlling wastewater pollution of pig farm
  • Method for reducing and controlling wastewater pollution of pig farm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In Shangyu Fuqiang Animal Husbandry Co., Ltd., Shaoxing City, Zhejiang Province (60,000 live pigs in stock, 110,000 live pigs annually; 700 tons of wastewater per day, COD content in wastewater is 8500mg / L, ammonia nitrogen content is 1700mg / L, and total phosphorus content is 140mg / L L) A large-scale pig farm waste pollution reduction and control pilot project, which includes a solid-liquid separation system, a 4-level biomass purification tank treatment system, and a 5-level green foxtail algae ecological wetland treatment system. Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0044] A method for reducing and controlling pig farm wastewater pollution, the steps of which are:

[0045] A. Solid-liquid separation system: Solid-liquid separation facilities, pig farm waste 1 use "solid-liquid separation machinery and equipment (such as Dafeng Zhongkun Environmental Protection Machinery Manufacturing Co., Ltd. and othe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention discloses a method for reducing and controlling wastewater pollution of pig farm, comprising the steps of: A, using a solid-liquid separation facility for performing solid-liquid separation of pig farm waste, stacking the solid waste for fermentation to produce an organic fertilizer; B, building a four-level biomass purification tank treatment system, constructing biomass purification tanks which are connected by pipes, putting straw in the biomass purification tank of each level; C, building a five-level green watermifoil ecological wetland treatment system including ecological wetlands which are naturally divided by ridges, planting green watermifoil, culturing the green watermifoil into a plant population, keeping an up level ecological wetland and a down level ecological wetland including a first level ecological wetland, a second level ecological wetland and a third level ecological wetland to facilitate the flow and purification of waste water. The method is easy to operate and low in construction cost, does not need running cost, and is suitable for application and promotion in pig farms in the majority of sub-tropical areas in middle and lower reaches of the Yangtze River.

Description

technical field [0001] The present invention relates to the field of agricultural environment, and more specifically relates to a large-scale pig farm (50,000-80,000 pigs in stock, 100,000-150,000 pigs for slaughter each year; 500-800 tons of waste water per day, and a COD content of 6000 tons in the waste water. -9000mg / L, ammonia nitrogen content 1600-2200mg / L, total phosphorus content 140-170mg / L) waste pollutant treatment method, especially suitable for the reduction and control of waste pollutants in subtropical large-scale pig farms, and achieve discharge standards. Background technique [0002] In recent years, with the rapid development of the economy, the eutrophication of rivers and lakes has gradually become an important ecological environmental problem facing our country. For example, several large lakes (Taihu Lake, Chaohu Lake, Dianchi Lake, etc.) and their surrounding areas frequently broke out "cyanobacteria", Many large and small rivers (Beijing-Hangzhou Gra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/14C02F103/20
Inventor 吴金水肖润林李裕元刘锋张树楠李红芳何阳白志辉
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap