How should pig farms be environmentally friendly? How to treat pig manure and waste water? What procedures do you need to set up?

Pork is an indispensable ingredient on the table of many people, so China's pork market is also very good, so many pig farms have been built. for farmers, how should pig farms be environmentally friendly? How to treat pig manure and waste water? What procedures do you need to set up? All these issues need to be considered, especially now that the environmental tax has been levied.

First, how should pig farms be environmentally friendly?

1. The location of pig farms should be legal and reasonable: pig farms should not be built in prohibited areas.

two。 Pig farm procedures and equipment should be complete:

(1) legal procedures approved by the local government

(2) use production sites and supporting production facilities commensurate with the scale of feeding

(3) having qualified personnel for epidemic prevention and animal husbandry and veterinary technicians

(4) facilities and facilities for the treatment of excreta and solid waste

(5) the pig farm should meet some other conditions stipulated by the laws and regulations of our country.

Second, how to deal with pig manure and waste water in pig farms?

Treatment of pig manure:

1. Pig manure can be used as fertilizer to return to the field: pig manure plays an important role in improving soil and increasing agricultural yield. The way of returning pig fecal sewage to the field is directly related to the manure removal process. Pig breeding in some countries in the world uses water to flush the dung, and the fermented dung water is used by tankers along with sowing or special machines to break the soil in the cultivated land. Pig manure is raised by the way of dry pig manure, the manure can be treated by the self-purification of the soil, the soil can obtain fertilizer and purify the manure at the same time, which saves the treatment cost.

two。 Composting of pig manure: in the process of pig manure decay, the temperature can reach 50-70 ℃ and kill most of the microorganisms, parasite eggs and weed seeds in pig manure. The treated fertilizer has low water content and no odor, so it is a late-acting fertilizer and is safe and convenient to use. The simple method of mature composting is to pile the mixed materials into strips on the cement floor or on the floor covered with plastic film, or in the cement tank, 1.5-2.0 meters high and 1.5-3.0 meters wide, and the length is determined according to the site.

3. Pig manure to biogas for power generation: biogas fecal sewage can be used to produce biogas, which is a mixed gas produced by anaerobic microorganisms (mainly methane bacteria) to decompose carbon-containing organic compounds in manure. Biogas is a kind of energy, which can be used for lighting, fuel, power generation and so on. The fermented biogas residue can be used as fertilizer, and the biogas slurry can be discharged into mermaid ponds for biological treatment.

4. Pig manure is used as aquatic plant feed: water hyacinth and fine green duckweed are planted with organic wastewater, in which water hyacinth is resistant to high concentration fecal water, fine green duckweed is resistant to medium concentration fecal water, and high concentration organic manure water can be absorbed and purified in water hyacinth pond for 7 ~ 8 days.

Treatment of waste water:

1. According to the sewage quality characteristics and drainage status of pig farms, a solid-liquid separation section is set up at the front end of the sewage treatment process to facilitate the preliminary separation of feces from sewage and reduce the amount of sewage treatment. The separated faeces and artificially removed faeces are processed into organic manure and sold after accumulation and fermentation.

two。 The separated sewage flows into the settling tank and regulating tank, and after precipitation, acidification and balanced adjustment, part of the hydrolyzed sludge is removed to the sludge drying tank. After being lifted by the pump, the sewage enters the baffled anaerobic reaction tank (ABR) and carries out the first-stage biochemical treatment to produce biogas for power generation, canteen drinking, heating and so on. After the precipitated sludge is dried by the sludge drying tank, it is sent to the composting plant and the manure removed to accumulate and ferment together for the use of compound fertilizer.

Third, what procedures are required for a pig farm to open?

1. The establishment of a pig farm should first obtain the "qualification Certificate of Animal epidemic Prevention conditions", and the location of the pig farm should comply with the regulations.

two。 The factory area should have good lighting and ventilation facilities, as well as disinfection and epidemic prevention facilities.

3. Pig farms should have harmless treatment and sewage treatment equipment commensurate with the scale of production.

4. Managers and employees should have the relevant conditions and obtain certificates for the use of land.

Part of the professional knowledge comes from the network.