摘要
以内蒙古通辽某公司年2.0×105t玉米为原料进行味精生产为例,对其污染排放进行较为系统的分析。结果表明,味精生产容易导致水污染的发生,其中以发酵提取阶段排放的污水污染最为严重,其悬浮物(SS)、化学耗氧量(CODCr)和生化需氧量(BOD5)分别依次达3.0×103、2.5×104和1.2×104mg.L-1;排放的大气污染物主要有粉尘、恶臭污染物硫化氢(H2S)以及热风炉产生的烟尘和二氧化硫SO2,尤其是H2S的污染浓度高达7.0×104mg.m-3。固体废弃物的污染主要是淀粉沉渣、纤维渣、麸质、细渣、胚芽渣和碎玉米渣等。通过对污水处理和大气污染治理的系统控制以及对固体废弃物的综合利用研究,结果表明,以玉米为原料的味精产业污染排放能够达到国家的相关标准。
A case study was marie on the environmental issues from the contamination discharging of a 2.0 × 10^5 t· yr^- 1 malze-based monosodium glutamate production in a company of Tongliao City, Inner Mongolia. The results showed that monosodium glutamate production could easily induce water pollution which was most serious at fermentation-extraction phase. At this phase, the SS, CODCr and BOD5 in discharged wastewater were up to 3.0 × 10^3, 2.5 × 10^4 and 1.2 × 10^4 mg· L^-1, respectively. The main air pollutants discharged included dust, H2S, and the soot and SO2 from sirocco furnaces. The concentration of discharged H2S could be up to 7.0 × 10^4 mg· m^- 3. As for solid wastes pollution, the main pollutants were starch sinking dreg, fibre dreg, gluten, fine dreg, embryo dreg, and broken maize dreg. Through the systematic control of wastewater and air discharge and the comprehensive utilization of solid wastes, the contamination discharging from this company was achieved to the relevant national standards of this country.
出处
《生态学杂志》
CAS
CSCD
北大核心
2006年第1期45-49,共5页
Chinese Journal of Ecology
基金
国家重点基础研究发展规划项目(2004CB418503)
国家杰出青年科学基金资助项目(20225722)。
关键词
污水排放
大气污染
固体废物
味精产业
玉米发酵
wastewater discharge, air pollution, solid waste, monosodium glutamate industry, maize fermentation
