China's energy conservation and environmental protection industry is the last of the strategic new waste industries, with strong policy support. It is estimated that during the 12th five-year plan period, the investment in the environmental protection industry will reach 3.1 trillion yuan, and the key investment in environmental protection will cover many aspects such as solid waste disposal, desulfurization and denitrification, municipal sewage, sludge and industrial wastewater.Other, war industry informationization department general office high "for an industrial solid waste comprehensive exercise base fostering pilot things tell" pointed out that the "twelfth five-year" eventually, the pilot regional industrial solid waste comprehensive exercise rate will be 2010 NianGen roots increased 10-12%, foster a number of different characteristics of industrial solid waste comprehensive exercise base, forming a short war in bits and pieces of industrial solid waste comprehensive exercise policies for machine made, to day high industrial solid waste comprehensive exercise growing by leaps and bounds.The solid waste disposal industry in China is facing an excellent opportunity for industrial growth.
The solid waste disposal investment is outside our country environmental protection investment accounts for a long time in the low, causes the current solid waste disposal measures to be nervous insufficient, "the twelfth five-year plan" will be the solid waste disposal industry investment degree from the low back high stride a inflection point, has not gone five years will enter the support peak.During the 11th five-year plan period, the total investment was 86.29 billion yuan, and the annual investment was 17.3 billion yuan.The total investment in treatment of solid waste, including medical waste and industrial waste, is about 210 billion yuan, with an average annual growth rate of 18.5%.
"Twelfth five-year" era, China's solid waste disposal industry will enter a high-speed growth period.In the past five years, the investment in solid waste disposal industry in China will reach 800 billion yuan, accounting for 25.8% of the total investment of 3.1 trillion yuan in the environmental protection industry, with a compound annual growth rate of about 30%, which is twice the growth rate of the overall investment in the environmental protection industry.With the advance of policy, China's solid waste policy will face more pessimistic growth space.The layout of heavy metal infection management during the 12th five-year plan period has been approved by the state council, and 60 billion yuan has been invested in the management of heavy metal infection during the 12th five-year plan period in the xiangjiang river basin.Driven by these policies or industrial layout, solid waste disposal engineering, equipment and solid waste measures and measures management and other sub-industries will enter a high-speed growth period.In addition, solid waste engineering equipment companies will be the first to benefit, and amateur operators will also face greater opportunities for growth.
The disposal of solid waste usually refers to the process of transforming solid waste into suitable for transportation, storage, exercise or disposal by physical, chemical, biological, biological and biochemical methods.Someone thought of solid waste is a kind of "three wastes" the hardest to freedom, because it contains the ingredients is huge, its physical properties (volume, liquidity, uniformity, cold damage, moisture content, value, etc.) are fixed, to reach the "harmless, reduction, qualitative capitalization" indicator will encounter is the eve of the trouble, usually infection prevention and control of solid waste, to bring the tail first to master it is qualitative, for example, gradually transforming rural fuel position (cover civil industry) master works of material consumption, norm to extend the service life of products, improve the acceptance ratio of waste;The second is to carry out comprehensive exercise, the solid waste as a capital war energy to deal with to be treated, practical can not exercise by compression war after non-toxic treatment into the final state of solid waste, and then landfill war light sea, the main points of today's important to adopt including compaction, fracture, separation, solidification, ignition, biological measures.
Solid waste disposal skills
Compaction skills
Compaction is a kind of experiment through a process to deal with waste reduction capacity, high transport costs, waste landfill of pre freedom of life skills, compaction is a kind of solid waste throughout the pre freedom of essentials, such as cars, such as cans, plastic bottles usually end take freedom of compaction, suitable for the solid wastes of compaction freedom of cutting volume, is unfavorable take compaction freedom, some can lead to manipulation performance of waste, such as tar, sludge or liquid materials, also for compaction of freedom.
Rupture skills
In order to reduce the shape of waste materials such as point furnace, landfill, compost and so on, it is necessary to stop the crack disposal of solid waste afterwards, because the large open space is eliminated, the size is uniform, and the texture is uniform, and it is compacting outside the landfill process.There are many key points of solid waste fracture, such as blow fracture, shear fracture, extrusion fracture, friction fracture and other proprietary high temperature fracture and mixed fracture.The most effective solid waste slag breaker is the shear breaker, which is more effective for landfill waste and compost waste.
Sorting skills
Solid waste sorting is an important method to realize capitalization and quality reduction of solid waste. Through sorting, effective enrichment can be exercised and harmless enrichment can be separated.The other is to separate the waste of different particle size level, the basic principle of separation is to exercise some sexual aspects of the material difference, to separate it.For example, the exercise of waste outside the magnetic war non-magnetic different stop separation;Exercise different particle size to stop breaking up;Exercise proportion different stop separation, etc.According to different conditions, it is not supposed to build a variety of machines to deal with solid waste to stop sorting, sorting including manual picking, picking, gravity sorting, magnetic sorting, eddy current sorting, optical sorting, etc.
Solid processing skills
Curing skills is back to add the waste solidification base material, make harmless solid waste solid or inclusion are inert curing a harmless process of freedom outside the base material, through freedom of curing product should have superior resistance to permeability, superior machine and leaching resistance, resistance to wet, freezing-thawing resisting features, freedom based on solidifying base material of different whether as light solidification, asphalt solidification, glass curing glue, curing, etc.
Fire and cold spell
Ignition method is a comprehensive treatment process of high temperature analysis and deep oxidation of solid waste.Because outside no combustion content gradually increase the proportion of the solid waste, take the ignition point freedom of solid waste, can exercise their cold has become a necessary trend of growth, this kind of freedom of essentials, solid waste, covering an area of long, the freedom of eve, is to protect the environment, ignition factory set is the eve of the country of over 100000 people, more and can absorb bits and pieces quality.Due to the land shortage, Japan has adopted the ignition method to gradually increase the temperature. Can the cold obtained in the ignition process be used for generating electricity, exercising the cold quality produced by the ignition stove, so as to keep the inhabitants warm and keep the room temperature in the greenhouse?Today, Japan and Switzerland turn over 65% of their municipal waste every year into renewable energy.However, ignition method also has drawbacks, such as large investment, ignition process exhaust smoke to form secondary infection, equipment rust scene tension.Cold solution is to increase the high temperature (1000℃-1200℃) of organic matter before oxygen or oxygen deficiency and cold it into three types of products: gas, liquid and solid. Compared with ignition method, cold solution method is a more promising method of processing and control. Its most obvious advantage is long capital construction investment, and the gas produced after cold solution can not be used as fuel.
Biological processing skills
Biological freedom of skills is the exercise of microbes to deal with the analysis of organic solid waste to do with whether to make it harmless to the transformation of organic solid waste to energy, food, feed, fertilizer, borrow ever to use outside extracting metals from waste slag, is an effective skills essentials of solidified waste capitalization, use today to deal with as wide a: composting, biogas, produce waste made sugar, cellulose fiber feed, biological leaching, etc.
Steel solid waste disposal skills
Because in the past two years to rural haze to more and more nervous, the steel industry environmental management are increasingly on the agenda, steel mills solid waste freedom of skills such as rotary hearth furnace indirectly through the original iron and steel slag to exercise (cold steel slag frowsty, tightness in the steel slag pit) skills, marl acceptance of cold-bound pellets of dust skills, gas energy-saving lime shaft kiln are all a hotchpotch of iron and steel industry the most progress predecessors solid waste freedom of skills.
