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本研究首先系统调查了制革工业以及生产中产生污染物质最多、危害最大的几个工序——毁毛膨胀、复灰、铬鞣的废水治理现状,它们主要采用综合废水的终端处理及主要污染废水的单独处理。据此,提出了采用三股主要废水循环利用工艺以及前后工艺经优化组合后的整个清洁化制工艺,在生产中尽量减少或消除污染物的排放,充分利用作为废物排放的不可再生资源,体现制革生产的“原子经济性”。本研究形成的一套清洁化制革工艺技术,投资少,效果显著。
This study first systematically investigated the status of wastewater treatment processes in the tannery industry and in the production of the most polluting substances, the most harmful ones, namely, hair removal swelling, ash and chrome tanning. They mainly use the terminal treatment and main pollution of integrated wastewater. Separate treatment of wastewater. Based on this, the entire clean-up process using the three major wastewater recycling processes and the optimized combination of the front and rear processes was proposed to minimize or eliminate the emission of pollutants during production, making full use of the non-renewable resources as a waste discharge and embodying the system. The “atomic economy” of leather production. The set of cleansing tanning process technology formed in this study has a low investment and significant effect.