| 英文摘要 |
The start date of this plan is March 27, 2023, and the plan performance period is November 30, 2024. This year, 8 companies have been matched with priority to promote the use of biogas residue and biogas slurry as agricultural land fertilizer, and completed Submit 8 applications for biogas slurry and biogas residue as agricultural land fertilizer points to the Agriculture Bureau for review, of which 7 are pig farms and 1 is a cattle farm. And there is one company located upstream of the key measuring station in the watershed under its jurisdiction (accounting for 12% of the total), with a total irrigation area of 9.46 hectares and an irrigation volume of 9,361 metric tons. The main crop applied for irrigation is feed corn, and the number of irrigation heads is approximately 1,152 heads, it is expected to reduce BOD: 21.1 metric tons/year, SS: 36.7 metric tons/year, ammonia nitrogen: 4.1 metric tons/year, save about 371 packages of chemical fertilizers, and reduce carbon emissions by 13.4 metric tons.
In 2024, 19 livestock farms, including Fushun Livestock Farm, Guancheng Ranch, Changxing Ranch, Yufeng Livestock Farm, and Xiaoxianrou Livestock Farm, have been guided to apply for water recycling for irrigation. All of them have completed the change of license documents and are applying for water recycling this year. There are 4 irrigation companies located upstream of key measuring stations. The main crops to be irrigated are flowers, trees and grass, followed by bamboo shoots. The total area applied for irrigation is 3.4801 hectares, and the annual approved irrigation volume is 25,798.2 metric tons. It is expected that the annual BOD can be reduced: 69.4 metric tons/year, SS : 70.6 metric tons/year, ammonia nitrogen: 8.5 metric tons/year.
This project has held a publicity briefing on livestock manure resource utilization regulations in July. During the meeting, a preliminary willingness survey and satisfaction survey form for livestock farmers was distributed to allow the livestock industry and farmers to check whether they are willing to use livestock manure and urine biogas slurry. After the meeting, the staff will conduct a willingness survey and statistics on the use of biogas residue agricultural land fertilizers. For those who are interested in animal husbandry and farmers, dedicated personnel will further contact and go to the site to evaluate the situation of the livestock farms. If they meet the conditions, dedicated personnel will match the livestock farmers. We worked with farmers to apply for the use of livestock manure, slurry and digestate as agricultural land. A total of 83 people attended the regulatory publicity and briefing session. Among them, Zhanxing Livestock Farm and Chuanming Livestock Farm applied through our team to use the digestate and digestate as agricultural land. Fertilizer Use Policy.
In 2024, there are 98 livestock farms that should monitor groundwater and soil in the demonstration households of biogas slurry and sludge. The background value detection of groundwater quality in irrigated farmland should include items such as conductivity, ammonium nitrogen (NH4+-N) or ammonia nitrogen, and groundwater well data (coordinates/site number/well depth). The background value detection of soil quality in irrigated farmland should include items such as conductivity of saturated soil extract, copper, zinc, soil texture, and sampling location information (coordinates/site number). As of November 20, soil quality monitoring of 98 demonstration households (180 points) has been completed, and 180 soil samples have been collected, and monitoring reports have been obtained for all of them. The monitoring results of the monitoring reports that have been issued show that the soil heavy metal copper (Cu) meets or is lower than the "Soil Pollution Monitoring Standard (Food Crop Farmland) Limit Value": 120 mg/kg, the average value is 13.7 mg/kg, the maximum value is 52 mg/kg, and the minimum value is 1.2 mg/kg; the soil heavy metal zinc (Zn) meets or is lower than the "Soil Pollution Monitoring Standard (Food Crop Farmland) Limit Value": 260 mg/kg, the average value is 76.0 mg/kg, the maximum value is 222 mg/kg, and the minimum value is 32.7 mg/kg. The soil conductivity monitoring results showed an average value of 590 μS/cm, a maximum value of 3,310 μS/cm, and a minimum value of 30 μS/cm, all of which met the expert-recommended standard value of 4,000 μS/cm for stopping irrigation (based on saturated extract test results).
|