There are biogas tanks, still polluted

: Monday - 26/09/2016 23:20  |  Viewed: 1210
Farmers share that biogas is just one of the important steps in animal waste management alongside other options.

Techno-biogas digestion tunnel is being applied at her farm

Many livestock farms have been invested in the construction of biogas reactors, but they can not handle environmental pollution. Farmers share that biogas is just one of the important steps in animal waste management alongside other options.

Need to raise the level of support to build large biogas reactors Nguyen Van Kim, manager of livestock farms of Tam Toan One Member Limited Company in Cam Thang commune, Cam Xuyen district (Ha Tinh) said that the project support construction The medium-scale biogas of the Low Carbon Agriculture Support Project (LCASP) is working very well. The company's farm has a size of 4,000 porkers. The investment of the system of environmental protection works is of special interest to the Company. Recently supported by the project company built a biogas tunnel, fuel from this biogas tunnel to serve the daily life of workers in the farm, saving 2 - 3 million dong for industrial gas. "However, to help large scale farms protect the environment more effectively, the project should raise the level of construction support and support additional items in the environmental impact assessment report. "It is very likely that if farmers are encouraged to build large biogas reactors while the gas demand of the farms is not high, excess gas will be bad for the environment," Kim said. With regard to investment efficiency and environmental treatment of large-scale biogas plants, many farmers in Ha Tinh are not interested in implementing this project. This is partly due to the low level of support from the LCASP project and the lack of specific guidance. They tend to build smaller, medium-sized buildings, because of the cost of investing to build barns and breeding animals, food, and so on. The investment in livestock waste disposal systems is usually improved gradually, when the farm owner has earned a certain amount of profit. Chau Minh Duc, 66 years old, wounded 2/4, owner of pig farm in Thanh Thoi An commune, Tran De district (Soc Trang), said that the efficiency of biogas plant in animal husbandry is very necessary. To protect the green environment, clean. This is evident to small-scale projects suitable for smallholders. "For large scale livestock, the total number of sows per 100 of my farm must be estimated at 60m3." The LCSP project management board is investigating and calculating business Fee for bank loans of 1.5 billion VND, but for large biogas plants, the family uses gas is not exhausted, if the source of excess gas to develop effectively, have to invest some extra works. There is a need for more capital, such as generators, but the generators ignite biogas with impurities so it is easy to smoke, the machine is not stable, "Duc shared.

People are not salty but According to the recognition of Binh Dinh provincial authorities, there are some farms and farms in the area are not interested in participating in the project to build medium-scale biogas plants. and big.

If you do not use up gas, large HDPE biogas reactors can be an environmental pollutant

Because of the low level of support, only 10 million VND for a medium scale construction project and 20 million VND for a large scale project. Meanwhile, construction of a medium and large scale projects cost from several hundred million to 1 billion. Due to the level of support compared with costs such as "salt break", although the sector guides the livestock producers involved in the construction of medium and large projects within the framework of the project but they still ignore, not participate. .

However, it is true that some farms and farms, despite not receiving financial support from the project, still spend their money to build medium and large biogas plants. However, during the construction process, they were not technically instructed so the works were not up to standard, nor were they taught how to use them. Although there are biogas tanks but farms are still polluting. "Farm-scale husbandry not only involves the construction of large-scale biogas plants, but also the construction of disinfected lakes, filter tanks and ecological lakes in series, from the inside to the environment. To ensure the breeding environment, "said Dao Van Hung, director of Binh Dinh LCASP project management board.

Being invested in a modern, 4 hectare area, Nguyen Thi Men's farm in Rang Dong Town (Nghia Hung District, Nam Dinh) is still worried about the environment of animal husbandry.

"My farm invests in 3 biogas tanks, of which the largest is 300m3. In addition, we also invest in the system of settling tanks, waste water and then into the pond regulate the environment, drowned in. However, it is only temporary, because the amount of waste, wastewater per day to discharge tons.

With the amount of manure, large wastewater like this, it is impossible to put all of them into biogas digester to make biogas. At the moment we are also excess gas, do not know what to use, is very waste. To overcome this, we use a separator, partially in the biogas tunnel, the rest is sold to the people who plant fruit trees, flowers ...

In addition, planting trees around the farm creates fresh air, preventing noise, stench, absorbing pollutants ... The most difficult problem is access to bank capital. To invest in modern machinery and environmental technology, as well as to expand the scale of breeding, "she said.

We visited a pig farm of 150 sows and more than 1,000 pigs of Mr. Nguyen The Thuyet in Ninh Xuyen village, Tien Dung commune, Yen Dung district. At present, the farm has invested in biogas system of 200m3 volume. However, because the amount of waste is too large, the stench of stinky odors, many surrounding households have reflected on the local government. If there is no remedy, certainly his contracted land area will be withdrawn because of environmental pollution.

Before that situation, he used a pond in the area to dispose of waste residue (after treatment through biogas reactor) and planted 5 acres of water hyacinth. The situation has improved, but still not resolved the smell. He continued to use a 1.5-acre pond to make a settling tank. Because the water quality is not good, only the freshwater catfish can live.

Every year, Mr. Thuyet has to spend about 40 million to hire people to exhaust all waste in biogas and ponds. It costs a great deal, and it certainly will make the profitability of livestock farmers decline.

Talking with us, Mr. Theory frankly shared that, if the management of environmental control, certainly his environmental treatment system is not guaranteed. In Yen Dung district, many farms were fined for environmental pollution. For example, formerly Mr. Truc's house was fined 70 million. The fine was too heavy, he had to give up farming.

"When I learned that the LCASP project will be implementing a fertilizer application model for microbial fertilizer production, I am very happy. Land for producing clean vegetables in the locality to provide micro-organism fertilizers for them, "said Thuyet.

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