On December 3, the Ministry of Ecology and Environment sent a letter to the China Rubber Industry Association saying that the "Emission Standard for Odor Pollutants (Draft for Comment)" has been completed and requires the China Rubber Association to give feedback to the company before January 15, 2019. department.
"China Rubber" learned that compared with the current standards, the newly completed standards have been severely tightened, and the maximum tightening rate is 86.67%. The Ministry of Ecology and Environment asserts that 56% of related enterprises are expected to be inconsistent after the implementation of this standard. It is necessary to upgrade the existing governance facilities. It is estimated that the total investment required by the enterprises involved will reach 36 billion yuan.
The China Rubber Association reminds all enterprises that the odor emission standard will include the entire rubber products industry. Once it is officially implemented or will increase the environmental pressure of enterprises, enterprises should seriously study the situation and submit feedback to the association as soon as possible.
The preparation working group stated that the new standard was revised on the basis of the current version (released in 1993), and the perimeter concentration limits of ammonia, trimethylamine and hydrogen sulfide were tightened, and the range of tightening ranged from 16.67% to 86.67%. The concentration limit of ammonia is the largest, the tightening degree of dimethyl disulfide is the smallest, and the average tightening is 62.54%; the weekly limit of odor concentration is the same as GB 14554-93.
According to industry sources, VOCs emitted by rubber industries such as tires are an important source of odorous substances and precursors of secondary particulate matter formation in PM2.5. Some enterprises have been repeatedly complained of emissions of odorous gases and face environmental penalties. And the risk of relocation and other orders.
The Ministry of Ecology and Environment mentioned in the compilation instructions that with the improvement of people's living standards, the awareness of the people's environmental protection has gradually increased, and the irregular behavior of relevant producers has led to a surge in complaints. The new standards for this preparation have been high in some respects. Or maintain the relevant standards in Japan, Korea and Taiwan.
The department reminded that enterprises with excessive odor concentration should improve according to the existing conditions, upgrade and upgrade existing technology equipment (improve processing scale, replace processing technology, and add multi-level processing units) to meet standard requirements. Excessive emission enterprises of deodorization facilities shall install deodorization and purification facilities during the transition period of standard implementation.
In addition, it is recommended that the newly-built enterprises incorporate the odor pollution control into the enterprise plan. According to the odor concentration limit stipulated by the new standard, the deodorization technology should be reasonably selected according to the actual situation during the construction stage, and the unorganized emission source (raw material storage warehouse, production) Workshops, etc.) carry out scientific layout and closed management to reduce the spread of malodorous gases and reduce the degree of pollution of enterprises to the surrounding environment.