The sludge produced after the urban sewage treatment was dirty and smelly, and many people shunned it. Hainan Nongfengbao Fertilizer Co., Ltd. took these urban sludges as a baby and used biotechnology to treat sewage at the Haikou Baishamen Sewage Treatment Plant. The resulting sludge is rendered harmless and resource-recycling, producing bio-organic fertilizers that are required for a variety of crops, enabling the recycling of sludge.
Dirty mud secondary pollution troubled sewage treatment plant
With the acceleration of urbanization in China, the city's sewage production has increased dramatically. The sewage treatment plants that protect the environment have also become large polluters, because sewage treatment plants produce a lot of sludge during the treatment of sewage, which contains more than 60% of the Organic matter will continue to change in nature, such as rot and stink. At present, there are mainly two types of sludge treatment methods: incineration and landfill. The incineration process is used in many foreign countries. Due to huge investment, only one or two sewage treatment plants in China have started to select this process.
Due to various conditions, sludge produced by most of the sewage treatment plants in China can only be landfilled, but there are many drawbacks to this treatment method. Landfills need to occupy valuable land resources and cause garbage to become mountains, secondary pollution of the surrounding environment and groundwater sources, and are not conducive to the protection of the urban ecological environment.
Agricultural Fengbao company eye knowledge treasure
The Baishamen Sewage Treatment Plant, which was completed in October 1999, is responsible for the processing of most of the domestic sewage in Haikou City. It produces about 40,000 tons of sludge each year. In the past, the disposal of dewatered sludge in Haikou was mainly transported to the Yan Chunling dump site, and the annual disposal cost was 2.5 million yuan.
In addition, there is a bad odor without sludge treatment, which is not only met with fierce opposition from farmers around the landfill site, but also the transportation costs are too high. Sometimes the sludge cannot be transported overseas for landfill and is accumulated in large quantities in the sewage treatment plant area in Haikou City. , seriously affected the normal production order of the factory and the quality of life of the surrounding residents.
According to the inspection of the environmental protection department, the heavy metal content of urban sludge in Haikou City is much lower than the national allowable standard, and it can be used as a raw material for high-quality organic fertilizers. Hainan Nongfengbao Fertilizer Co., Ltd. is eye-catching and sees this business opportunity. Under the coordination of the municipal government, at the end of 2002, Hainan Nongfengbao Fertilizer Co., Ltd. and Baishamen Wastewater Treatment Plant signed a contract to purchase the entire sewage treatment plant sludge at a price of RMB 15 per ton.
Sludge shakes organic fertilizer
Since then, Hainan Nongfengbao Fertilizer Co., Ltd. has cooperated with relevant scientific research institutions to use microbial treatment methods to kill harmful organisms such as nematodes and E. coli in sludge, and then used sludge as a base fertilizer to develop and produce up to 20 more. A variety of organic fertilizers, compound fertilizers and microbial fertilizers. After the product passed the environmental protection and quality inspection of relevant departments in Haikou, it was put on the market at the end of 2002 and was widely used for the cultivation and fertilization of rubber, off-season vegetables, and tropical fruits in Hainan.
After years of extensive and in-depth research on urban sludge, Nongfengbao Company has achieved the following topics: "Urban Sludge Harmless Agricultural Technology" and "Development and Application of Non-environmental Biological Fertilizer Fermentative Bacteria (Green Bacteria)" Technological achievements.
According to experts, the organic fertilizer made from sludge not only contains high nitrogen, but also has a higher fertilizer efficiency than organic fertilizer made from livestock and poultry manure, and is more conducive to the absorption of crops. In addition, in the process of producing organic fertilizer, the sludge has reached 100% utilization, and it has been truly reduced, harmless, and resource-resourced.
The experience of Nongfengbao Company in carrying out circular economy construction earlier in the country has aroused the attention of all parties. Zhejiang, Jiangsu, Fujian, Liaoning, Shandong and other sewage treatment related units have come to learn from it. Dalian, Qingdao and other water supply groups also invited this. The chairman of the company is a consultant.
Bubble Waffle Maker,Waffle Maker,Commercial Waffle Machine,Industrial Waffle Maker
Guangzhou New Power Catering Equipment Manufacturing Co.,Ltd , https://www.gznewpower.com