CN104310706A - Method for comprehensive treatment of dung of dry dung collection dairy farm as pasture of less than 500 livestock on hand - Google Patents

Abstract

A method for comprehensive treatment of manure and waste from dairy farms with less than 500 cows. The collected sewage is filtered and transported to the adjustment tank through the dark pipe; the effluent from the adjustment tank is introduced into the anaerobic reactor, and the anaerobic fermentation of the anaerobic reactor is carried out. After the treatment, the organic matter is fully degraded, and then led to the aerobic tank for aeration treatment; the aerobic tank achieves the effects of deodorization and deammonization through aerobic treatment, and the remaining water is directly used for planting through the appropriate ratio of the mixed irrigation tank ; The collected solid manure is directly transported to the manure shed as a raw material reserve for secondary resource utilization, or as a substrate for earthworm culture or directly composted and decomposed manure is directly used as fertilizer for planting. The advantages of the present invention are: the method collects and classifies feces and sewage, reduces investment costs and operating costs; has good versatility, wide application range, and high stability; effectively improves the environmental sanitation of farms and surrounding areas; and is easy to operate and maintain , can realize semi-automatic operation.

Description

Comprehensive treatment method for manure and sewage in dairy farms with less than 500 cows

technical field

The invention relates to a technology for comprehensive treatment of manure and sewage in dairy farms, in particular to a method for comprehensive treatment of manure and sewage in dairy farms with less than 500 cows.

Background technique

According to the Ministry of Agriculture's "National Advantageous Agricultural Products Regional Planning and Layout 2008-2015" statistics, at present, my country's per capita dairy product consumption is only equivalent to 1/4 of the world's average level and 1/12 of that of developed countries, and there is broad room for development. In recent years, with the increase in the demand for dairy products and driven by the cow-dominant areas, my country's dairy industry has continued to develop at a high speed, and a number of star enterprises and well-known brands have emerged, achieving remarkable results. According to statistics from the Animal Husbandry Yearbook, the national breeding volume in 2012 was 14.4 million head, and according to the plan, it is estimated that by 2015, the national dairy cow breeding volume will reach 17 million head. With the continuous expansion of breeding scale and the increase in the number of intensive dairy farms, the environmental pollution caused by large-scale dairy farm manure, especially the pasture-type large-scale dairy farms that use dry manure as the main manure cleaning process A large amount of high-concentration farming manure is causing widespread concern in the society.

Due to the large amount of manure generated and discharged during the industrial development process has not been effectively controlled and utilized in a timely manner, resulting in a large waste of resources and threatening the quality of livestock products and the safety of the breeding environment. To this end, the national and local governments have issued a series of laws, regulations, standards and norms to constrain and promote the healthy development of the industry. On January 1, 2014, the State Council officially promulgated the "Regulations on the Prevention and Control of Pollution from Large-scale Livestock and Poultry Breeding"; Poultry Breeding Industry Pollution Prevention and Control Technical Specifications, and Livestock and Poultry Breeding Industry Pollution Control Engineering Technical Specifications to constrain and solve livestock and poultry breeding pollution problems.

The dry cleaning manure-type large-scale dairy farm breeding method and its manure collection method are universal in the dairy farming industry and have an important impact on the healthy development of the industry. The vast majority of farms, especially small and medium-sized farms, mainly use the dry manure cleaning process. Compared with the manure production and discharge of water flushing dairy farms, manure is mainly collected in the form of solids. The amount of aquaculture wastewater is relatively small, and the organic matter content in the wastewater is low. However, if it is not treated and discharged randomly, it will also cause serious environmental pollution. An economical, applicable and targeted manure treatment process should be developed It is the key problem to be solved in the present invention.

Through industry research, the manure of large-scale dry-cleaning dairy farms mainly comes from cowsheds and sports fields; the waste water in the dry-clearing process mainly comes from the flushing water of the milking parlor equipment pipeline, the floor flushing water of the waiting hall, cow urine, summer Spray water for cowsheds, where farms with spray conditions are the main source of seasonal drainage. Different breeding scales will produce different amounts of wastewater, and the corresponding treatment methods will also be quite different. The present invention mainly aims at formulating corresponding treatment processes for large-scale dairy farms with less than 500 cows.

Contents of the invention

The purpose of the present invention is to provide a method for comprehensive treatment of manure and sewage in pasture-type dry-cleaned dairy farms with less than 500 cows in view of the characteristics and existing problems of manure production and discharge in pasture-type dry-cleaned dairy farms with less than 500 cows. Manure is collected and treated by category, with seasonal adaptability, certain storage and deep purification capabilities, and a comprehensive manure treatment method that can realize the combination of planting and breeding.

Technical scheme of the present invention:

A method for comprehensively treating manure and sewage in dairy farms with less than 500 cows in stock, the steps are as follows:

1) First, the equipment flushing water produced in the milking parlor, the ground flushing water in the parlor to be milked, cow urine and a small amount of cow manure are collected from the underground ditch in the parlor, and after collection, the animal cilia and grass mustard are filtered out through the grid, and then collected by the dark The pipe is transported to the regulating tank;

2) The effluent from the regulating tank is introduced into the anaerobic reactor, and the organic matter is fully degraded after anaerobic fermentation treatment in the anaerobic reactor, and most of the nitrogen-containing organic matter is converted into ammonia nitrogen. The biogas generated can be used as clean energy for comprehensive utilization, and the effluent is led to Aerobic tank for aeration treatment;

3) The aerobic pool achieves the functions of deodorization and deamination through aerobic treatment. The organic matter of the aquaculture wastewater after aeration treatment has been effectively degraded, and the free ammonia has been removed. After disinfection treatment, it can be reused in the waiting room instead of clean water After flushing the ground, the remaining water body will be a good water and fertilizer resource suitable for plants to absorb and utilize, and it can be directly used for planting through the appropriate ratio of the mixed irrigation tank;

4) The solid manure collected from cowsheds and sports fields is directly transported to the manure shed by the manure cleaning truck as a raw material reserve for secondary resource utilization, or as a substrate for earthworm breeding or directly composted and decomposed manure is sold directly and finally used as fertilizer for crop farming.

the

Advantage and positive effect of the present invention are:

1) This method makes full use of the characteristics of manure and sewage production and discharge in pasture-type dry-cleaning dairy farms with less than 500 cows in stock, with the ultimate goal of realizing the resource utilization of breeding waste, and classifies and collects manure and sewage for treatment, reducing the need for manure treatment. investment and operating costs;

2) This method has good versatility and a wide range of applications, and can meet the manure treatment of pasture-type dry-cleaning dairy farms with a stock of less than 500 cows in different regions;

3) The regulating tank can effectively relieve the seasonal sewage treatment pressure brought by a large amount of spray water and improve the stability of the system;

4) This method can effectively improve the environmental sanitation of the farm and its surroundings, and provide a guarantee for the development of clean farming;

5) This method can realize semi-automatic operation, and the operation and maintenance are simple. The operation of the whole system only needs part-time operation, and no fixed personnel are required.

the

Description of drawings

Fig. 1 is a schematic flow chart of the method for comprehensive treatment of manure and sewage in a pasture-type dry cleaning dairy farm.

the

Detailed ways

Example:

A method for comprehensive treatment of manure and sewage in dry-cleaning dairy farms with less than 500 cows in stock, as shown in Figure 1, including the following processes:

1) First, collect the equipment flushing water from the milking parlor, the ground flushing water from the parlor to be milked, cow urine and a small amount of cow manure from the underground ditch in the parlor, and filter out animal cilia and grass mustard through the grid after collection, and then The dark pipe is transported to the regulating tank;

2) The regulating tank should be larger than the storage volume of 30 times the daily discharge in the spraying season, which can play the role of conditioning and homogenizing, primary acidification and sewage buffering in peak seasons, and protect the normal operation of subsequent anaerobic reactors. Oxygen reactor treatment;

3) After the anaerobic fermentation treatment in the anaerobic reactor, the organic matter is fully degraded, and most of the nitrogen-containing organic matter is converted into ammonia nitrogen, and the generated biogas can be used as clean energy for comprehensive utilization. Aerobic treatment achieves deodorization and deammonization effects. After aeration treatment, the organic matter of the aquaculture wastewater has been effectively degraded, free ammonia has been removed, and after disinfection treatment, it will be reused in the waiting hall instead of clean water to wash the ground. The remaining water will be It is a very good water and fertilizer resource suitable for plant absorption and utilization, and can be directly used for planting through the appropriate ratio of mixed irrigation tanks;

4) The solid manure that can be collected in cowsheds and sports fields can be directly transported to the manure shed by the manure truck to be used as a raw material reserve for secondary resource utilization. It is sold and eventually used as fertilizer for planting.

This method fully combines the characteristics of the breeding process and the manure cleaning process of pasture-type dry manure cleaning dairy farms with less than 500 cows, and collects manure and sewage by classification, reducing the investment cost and operation cost of manure treatment. The process has good versatility and a wide range of applications, and can effectively improve the environmental sanitation of the farm and its surroundings. The process technology is perfect, it is well used, and it has significant technical and economic effects.

Claims (1)

1. A method for comprehensive treatment of manure and sewage in pasture type dry-cleaning dairy farms with less than 500 cows in stock, characterized in that the steps are as follows: 1) First, the equipment flushing water produced in the milking parlor, the ground flushing water in the parlor to be milked, cow urine and a small amount of cow manure are collected from the underground ditch in the parlor, and after collection, the animal cilia and grass mustard are filtered out through the grid, and then collected by the dark The pipe is transported to the regulating tank; 2) The effluent from the regulating tank is introduced into the anaerobic reactor, and the organic matter is fully degraded after anaerobic fermentation treatment in the anaerobic reactor, and most of the nitrogen-containing organic matter is converted into ammonia nitrogen. The biogas generated can be used as clean energy for comprehensive utilization, and the effluent is led to Aerobic tank for aeration treatment; 3) The aerobic pool achieves the functions of deodorization and deamination through aerobic treatment. The organic matter of the aquaculture wastewater after aeration treatment has been effectively degraded, and the free ammonia has been removed. After disinfection treatment, it can be reused in the waiting room instead of clean water After flushing the ground, the remaining water body will be a good water and fertilizer resource suitable for plants to absorb and utilize, and it can be directly used for planting through the appropriate ratio of the mixed irrigation tank; 4) The solid manure collected from cowsheds and sports fields is directly transported to the manure shed by the manure cleaning truck as a raw material reserve for secondary resource utilization, or as a substrate for earthworm breeding or directly composted and decomposed manure is sold directly and finally used as fertilizer for crop farming.