Comprehensive Utilization Patterns And Techologies Of Biogas In Countrysides Together With Research On Strategies Related To It In Huaiying District

Huaiyin District, lying on the Northern subtropical and temperate zone,has a mildly damp monsoon climate of warm-temperate zone,with rich soil and abundant nutrition. Meanwhile,it is a large agricultural area, which includes 970,000 667m2 farmland,with 230, 000 of them for vegetables. Large scales of domestic animals,such as pigs, meat-supply cattle,cows and goats, and poultry, like meat-supply pigeons, provide plenty of resources for biogas. After analyzing the advantages basics,the essay mainly expounds the comprehensive utilization patterns and technologies of biogas in countryside, and provides the strategies and proposals on the tissue,hoping to push ahead the development of biogas in countryside in a healthy way in order to achieve the economic, ecological and social benefits. It is based on scientific methods which combines experiments and investigations into the biogas users,description and charts,as well as analysis and conclusion.It's beneficial to develop biogas in countryside. Not only does it provide farmers with life energy, but it also helps to protect environment, which is a promising public system with great meanings and loaded with heavy hope. The overall use of biogas helps to better the resources structures in countryside, increase the agricultural effects and farmers' income, leading ecology to recycle healthily, and advancing instruction of new countryside. The true values in biogas are reflected in its comprehensive benefits. A pigsty of 3 to 5 heads can make a biogas pool of 6 to 8 square meters work, producing 350 cubic meters of biogas annually. The amount can make an extra income profit of 1000 Yuan,saving the resource costs of cooking, lights,and bath with the biogas and dropping expenses on fertilizer for crops and increasing outputs of fruits and vegetables with its waste. Comprehensive utilization of biogas will make even greater economic, ecological and social profits if the gas is used to breed seeds, raise silkworms, to hatch chickens, to store gains or keep fruits fresh and the liquid to raise fish,pigs, with the waste to grow mushroom and edible fungus. Analyzing the local climate and geographic situation, band combining investigations into growing and breeding, Huaiyin District expands a biogas pool pattern of round column, whose capacity is about 8 cubic meters. The pool is modeled with bricks and inlaid with concrete. The main steps follow like this: firstly,decide column and prepare material; secondly,choose a proper site; thirdly, line and dig the hole; fourthly, build bricks and inlay concrete. Next,whiten the walls. At last, use it after testing its biogas and pressure.Based on the surveys and experiments, the essay analyzes the benefits from the comprehensive utilization pattern of biogas in countryside in Huaiyin District. Compared with maize-raising pigs pattern, the soil of maize-biogas-raising pigs is up to 7.9% productive than the traditional compost and 16.2% more productive than pure chemical fertilizer, according to a test on the situation of and nutrients in soil. Biogas waste can improve the situation and add to the nutrients, making plants grow stronger and able to resist pests and deceases. According to a survey, it is found that biogas cut down on expenses in costs of natural gas and coal, save money on fertilizer and pesticides and increases the income from higher outputs of fruits and vegetables, making extra 300 Yuan every year. In addition, biogas has noted ecological profits.Considering the present scale and future development space of biogas in countryside in Huaiyin District, the essay puts forward some programmed principles and development projects,and brings up development strategies and policy proposals when building biogas pools. They should be developed scientifically on the local climate and geography and in a specialized and industrialized way.Technologies after construction should be updated in administration in time and seek various service patterns so as to prolong the use of biogas pool and exploit the comprehensive utilization benefits.