| 英文摘要 |
The project aims at surveying animal husbandry in Yunlin County. The content of survey includes the distribution of animal husbandry, the percentage of pollution contributed, the relative locations of key survey stations, and so on. The survey objects are focused on the animal husbandry business which owners have registration certificates for breeding livestock or poultry, and the survey areas are mainly at Beigang, Xinhuwei, Zhuoshui River basin, and Dayilun, Bajiaoting, Shicuoliao, Youcailiao, Magongcuo, as well as Niutiaowan Drain. The survey areas also include Tuku, Yunjia, Guanguang, Haifeng and Feng Bridge.
Based on the distribution of animal husbandry and pollution load condition, the project comes up with a suggestion list of 98 livestock farms which could be counseled for using biogas fermentation residue as fertilizer. Project developers visit those livestock farms to check whether the facilities are qualified, to understand current conditions of waste water treatment facilities in farms, days of anaerobic fermentation, conditions of biogas collection and utilization, farm lands which can be used for biogas fermentation residue irrigation, and also to introduce farm owners the application procedures for biogas fermentation residue as fertilizer, as well as related water pollution regulation.
In order to raise farm owners’ interest in using biogas fermentation residue as fertilizer, project developers have printed 2,000 guidance brochures and hand them out during on-site counseling and promotional meetings. It is estimated that 10 promotional meetings will be held in the duration of the project, and by 30 November there were already 8 meetings held, 894 participants joining, and 222 willingness questionnaires collected. There were 38 farm owners who already have anaerobic pools and biogas bags on their farms showing interest in applying for the project. Among the farm lands of these owners, there were 29 self-owned farm lands. Project developers also counsel these 29 farm lands on site. There were a demonstrative observation tour held on 26 April with 52 participants, excluding staffs from the Environmental Protection Bureau and other staff members.
Meanwhile, in order to counsel large livestock farms in Yunlin County to use biogas fermentation residue as fertilizer, and to check whether some small to medium farms are still operating, project developers conduct waste water facilities operation and waste water discharge inspection on farms in which less than 3,000 pigs are fed and on those which often receive people’s statements. The inspected amount of farms reached 528 by 30 November. nineteen of them were temporarily suspended, and eighteen of them were visited with no owners around. None of the inspected farms were inspected with bypass discharge. For the farms in which more than 3,000 pigs are fed, those which often receive people’s statements or unwilling to use biogas fermentation residue as fertilizer, water sampling is conducted. 171 farms were inspected by 30 November, and among the 171 effective reports, 68 of them are under qualified. The under-qualification rate is 39.8%. There are 20 farms which fail at qualifying BOD and SS, 11 farms fail at reaching BOD standard, and 37 farms fail at reaching SS standard. During the water sampling process, there were 23 farms which owners are willing to use biogas fermentation residue as fertilizer, with project developers conducting counseling afterwards. So far, six of them are assisted by the project to apply for the biogas fermentation fertilizer.
As to 8 performance tracking in demonstrative areas in year 2016, 8 dry and wet season groundwater table monitoring and soil monitoring were accomplished. The monitoring results will be compared and contrasted with the background value first proposed in year 2016 in order to understand the influence to groundwater system and soil near farm lands irrigated with biogas fermentation residue.
As to assisting the application of using biogas fermentation residue as fertilizer, there were 59 farm lands conducted with biogas fermentation residue check, soil and groundwater check by 30 November. 177 pre-instrumental analysis for farm lands which will be irrigate with biogas fermentation residue were also finished by the same date mentioned before. 59 application documents are written and submitted. By December 31, 54 applications were approved. In total, there were 68 applications that were approved in 2016 and 2017. These 68 businesses’ irrigation area was 280.390996 hectares and their irrigation volume were 208,202.39 tonnes / year. It is estimated that each day BOD can be reduced by about 2,281.67 kilograms, and NH3-N can be reduced by about 219.61 kilograms. Each year water pollution control fees can be reduced by NTD 701,836. The use of No.5 Taiwan Fertilizer can be reduced by about 12,558 bags, which cost about NTD4,144,140.
According to 2016 Statistical Yearbook of the Council of Agriculture, the planted area in Yunlin County was about 119,452.07 hectares. Rice was the most widespread crop. The planted area of rice was 44,436.06 hectares (37.2%). Root and tuber crops and leaf vegetables together accounted for 23.8 % of the total planted area. The planted area of Pennisetum purpureum Schumach was 323.54 hectares. Assuming each pig generates 20 litres of wastewater each day, and each cattle generates 80 litres of wastewater each day, the planted area in Yunlin County was large enough to use all the biogas residue and biogas slurry generated from pig farms and cattle farms. Further promotion is needed to increase farmers’ willingness to adopt this method.
As to 2017 Rivers and Streams Pollution Remediation (including Watershed Management) Project, performance review meetings across units were held on June 28 and October 24. The project also participated in a related evaluation meeting on December 25. The self-evaluation score was about 76.504 for the performance between January and October, 2017.
|