Introduction to the market prospect of the leachate treatment

With the increase of urban population in China, the expansion of city scale and improvement of living standards of residents, the output of municipal solid waste in China has increased dramatically. By 1999, our country city life garbage output has reached 1. 400 million tons, and increasing at an annual rate of 8% ~ 10%, nissan rubbish has more than 1 kg per capita, close to the industrial level of the developed countries.

waste leachate treatment industry has entered the industry boom at the end of 20 billion yuan in the next 10 years the rest of the market space. Leachate treatment facilities construction of the golden period is over five years, incremental market since 2012, has a significant downward trend, in the next few years will enter a steady development.

development garbage leachate treatment in our country

leachate treatment plant construction in our country also started relatively late, from the time on the leachate treatment has experienced two stages. The first phase from the early 90 s, main reference to urban sewage treatment process, the second stage since the late 90 s by adopting the combination of biochemical treatment + physicochemical treatment method. COD waste leachate treatment standards in 1997 to 1000 mg/L, this is relatively easy to processing standards, treatment costs are relatively low; Processing standard COD in 2008 within the 100 mg/L, in sensitive areas such as water source reserve requirements COD reach 60 mg/L, which on the basis of processing standards in 1997 and then cut to reach more than 90% of COD load standard in 2008, for the traditional biological treatment process is hard to do, must be combined with physical processing technology to improve, such as nanofiltration, reverse osmosis and ultrafiltration technology, but the process of investment is high, the running cost is higher also. For example, one day processing 1000 tons of landfill leachate, adopts the traditional process to achieve discharge standard cost about 1997 in less than 20 yuan per ton, and achieve discharge standard operating costs will increase to 2008-40 50 yuan per ton.

two standard market demand stimulus rubbish infiltration processing

the water quality characteristics of landfill leachate is mainly COD, ammonia nitrogen, heavy metal content is high, the COD concentration in 6000 - in general 10000 mg/L, some even as high as 50000 - 60000 mg/L, far higher than that of general urban sewage. Generally speaking, processing one ton of rubbish leachate equivalent to about 100 tonnes of municipal sewage processing. Garbage leachate due to its concentration is much higher than city life sewage, also has brought the difficulty of processing. On July 2, 1997, the national environmental protection bureau released the landfill pollution control standard GB16889 - 1997). , to the life of waste generated in the landfill leachate effluent BOD, COD, ammonia nitrogen, suspended solids content put forward specific requirements.

this standard after the domestic garbage leachate treatment demand appears the first wave of high tide. On July 1, 2008, the country 'standard of living garbage landfill pollution control' ( GB16889- 2008). The official start of the new standard. Relative to the old standard in 1997, the new standards not only improved the leachate treatment standard, also mandates that existing and new domestic waste landfill site leachate treatment should be built and complete facilities, leachate treatment standards are allowed to discharge, the original life landfill should be before July 1, 2011 to meet the requirements of the new standard, the domestic demand for waste leachate treatment significantly increased, in the second wave of demand.