I. Overview of pig breeding wastewater
1. Characteristics of pig breeding wastewater
Pig breeding wastewater has a high content of organic substances and nutrients which are indicated by parameters such as: COD, BOD5, SS … In addition, pig breeding wastewater contains high levels of N and P. Besides, it also contains a large amount of bacteria that cause extremely dangerous diseases affecting the health of people as well as other animals in the area.
In pig farms, a simple and time-saving way to clean manure is to use water for washing. Final wastewater contains organic matter content 70-80% including carbohydrates, amino acids, protit, fats, cellulose and their derivatives in feces and leftovers. In addition, there are easily biodegradable organic substances, 20-30% inorganic substances including soil, sand, salts, urea fertilizers, chlorides, SO42- …
2. Waste characteristics
Washing the barn with water also makes it difficult to collect dry manure. Besides, some farming households often use dry manure to fertilize their fields, most of them do not have waste collection. Therefore, in most farms, it is necessary to collect fertilizers and wastewater for treatment. In the feces contains a very small portion of trash, fillers and excess food. In the wastewater treatment process, the farm must treat both wastewater and manure at the same time.
3. Urgently needed to treat pig breeding wastewater
The World Health Organization (WHO) has warned that if there are no measures to properly collect and treat swine waste, it will seriously affect human and livestock health and cause serious environmental pollution. important. Pig breeding wastewater contains dangerous pollutants, many pathogens, bacteria and viruses that cause disease. It not only affects the environment, pollutes the country and air, but also affects human health.
II. Wastewater treatment technology for pig breeding
1. Properties of input wastewater of pig breeding wastewater after Biogas:
|
No. |
Parameter | Unit | Value |
|
1 |
pH | – | 5,5-6,5 |
|
2 |
COD |
mg/L |
800-1200 |
|
3 |
BOD |
mg/L |
400-600 |
|
4 |
TSS |
mg/L |
800 – 1000 |
|
5 |
Amoni (NH4+) |
mg/L |
300-500 |
| 6 | TN | mg/L |
350-550 |
Source: refer to the results of analyzing wastewater samples from some pig farms in Dong Nai
2. Wastewater treatment technology for pig breeding:
Please call the hotline of Thanh An Environmental Company (Hotline: 0907071879) for detailed consultation support.
