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環保各行業處理工藝與廢氣分析

作者: 來源: 日期:2016-8-4 14:14:27 人氣:0 評論:0

化工廢氣處理:

    化工廢氣是指化工生產制造中產生的有毒有害的氣體?;U氣中含有的污染物種類很多,物理和化學性質復雜,毒性也不盡相同,嚴重影響人體健康和污染環境。按照污染物存在的形態,化工廢氣可分為顆粒污染物和氣態污染物——通常顆粒污染物主要有塵粒、粉塵、煙塵、霧塵、煤塵等;氣態污染物主要有含硫化合物、含氯化合物、碳氧化合物、碳氫化合物、鹵氧化合物等。


制藥工業廢氣處理:

    生物制藥行業的廢氣,也是值得關注的主要污染源之一,以其最有代表性的原料藥車間為例,其生產過程主要四個步驟,基本為間歇式投料,24小時生產,在排出的廢氣中含有甲苯、乙酸乙酯、甲醇、二氧六環、三乙胺、DMSO等多種復雜的有機物成分,現部分車間已用PVC管和PVC收集罩收集后輸送到簡易水洗塔經過水洗排放。排放廢氣中有機物的總濃度平均值約為1500毫克/立方米左右,對廠區及周邊環境造成較大的污染,環境需要進行有效治理,已達到國家規定的排放標準。生物制藥干燥廢氣處理、藥行業生產過程中在發酵、干燥、污水處理等工序均產生大量的惡臭異味氣體,發酵工段產生的含氨廢氣(擴散型)未經處理、生產過程中產生的廢氣已影響企業的環境空氣質量和人體健康,亟待處理。


涂裝行業廢氣處理:

    涂裝是產品表面保護和裝飾采用的最基本的技術手段,涂裝作業遍及國民經濟各個部門:家具、汽車等金屬、塑膠、竹木制品加工制作作業、涂裝車間與打造成型(切、銷、磨)車間是環境污染主要的生產場所。在噴涂作業中,溶劑型涂料的50%~70%在涂裝過程中以漆霧飛散掉,涂料中絕大本分有機溶劑揮發釋放到空氣中。


污水處理廠惡臭氣味處理:

    各個行業污水處理站點與城市污水處理廠在運行過程中產生擾民的惡臭氣味,污水處理工程中產生的惡臭成分主要是由蛋白質、脂肪、碳水化合物的微生物呼吸、發酵過程的產物和不完全產物、一般分為一下三類


1.含硫化合物——硫化氫、硫化鉀、甲基硫醚等;


2.含氮化合物——氨三甲胺;


3.碳、氧或碳、氫、氧組成的化合物——低級醇、醛、脂肪酸。


惡臭氣味主要產生環節在于進水格柵、調節池、曝氣塵沙池、厭氧池、缺氧池、曝氣池、污泥濃縮池和污泥中轉等工序。


垃圾固廢中轉站及填料場臭氣處理:

    垃圾中轉站的目的是把居民區垃圾集中后,壓縮打包,在運送至垃圾填理場或垃圾處理廠進行集中處理。垃圾的生產、收集、運輸過程中同時伴隨著發酵與腐爛,散發出以硫化氫、氨氣、甲硫醇、甲硫醚為主的惡臭氣體,且車輛進出、裝卸時引起垃圾滲濾液滲漏和揚塵,對周邊產生滋擾。


Chemical waste gas treatment:


    Chemical Waste Gas refers to chemical manufacturing generated toxic and harmful gases. Chemical pollutants in the exhaust gas species contained a lot of complex physical and chemical properties, toxicity, are not the same, serious impact on human health and pollute the environment. In accordance with the form of the presence of pollutants, chemicals can be divided into the exhaust gas particulate pollutants and gaseous pollutants - usually particulate pollutants are mainly dust particles, dust, smoke, fog and dust, coal dust; gaseous pollutants are mainly sulfur compounds, chlorine compounds, oxides of carbon, hydrocarbons, halogen-oxygen compounds.


Pharmaceutical industrial waste gas treatment:


    One of the main sources of gas in the biopharmaceutical industry, is also noteworthy for its most representative pharmaceutical raw materials workshop, for example, four major steps of its production process, substantially intermittent feeding, 24-hour production, in the exhaust gas contains a variety of complex organic components toluene, ethyl acetate, methanol, dioxane, triethylamine, DMSO, etc., are part of the plant has been using PVC pipe and PVC cover collection after collection transported to simple washing after washing tower emissions. The total concentration of organic matter in the average emissions of about 1500 mg / cubic meter, the plant site and the surrounding environment cause greater pollution, environmental need for effective governance, have reached the national emission standards. Biopharmaceutical drying gas processing, pharmaceutical industry in the production process of fermentation, drying, sewage treatment and other processes are generating a lot of stench smell of gas, ammonia gas generated by the fermentation section (diffusion) of untreated exhaust gas generated in the production process has been affect ambient air quality and human health, urgent treatment.


Paint industry waste gas treatment:


    Painting is the most basic technology products surface protection and decorative uses, painting jobs throughout the various sectors of the national economy: furniture, automobiles and other metals, plastics, wood products processing and production operations, paint shop and create shape (cut, pin , grinding) plant is the main production sites of environmental pollution. In spraying operations, 50% to 70% solvent-based coatings in the coating process in order to fly out of the mist, paint the vast sub-volatile organic solvents released into the air.


Sewage Treatment Plant bad odor treatment:


    Site sewage treatment industries and urban sewage treatment plant odor nuisance odor during operation, malodorous components sewage treatment project is mainly generated by the breathing of protein, fat, carbohydrates microbial product of the fermentation process and incomplete product, what is generally divided into three categories


1. The sulfur compounds - hydrogen sulfide, potassium sulfide, methyl sulfide and the like;


2. The nitrogen-containing compounds - ammonia trimethylamine;


3. The compound of carbon, oxygen, or carbon, hydrogen and oxygen consisting of - lower alcohols, aldehydes, fatty acids.


The main aspects that produce foul odors inlet grille, regulation pool, dust aeration tank, anaerobic tank, anoxic, aeration tank, sludge thickener and sludge transfer processes.


Refuse solid waste transfer station and a filler field Odor Treatment:

    Refuse transfer stations aim is to focus on residential garbage after compression packaged, transported to the landfill management in the field or waste treatment plant for centralized treatment. Waste production, collection, transport process is accompanied by fermentation and decay, it emits hydrogen sulfide, ammonia, methyl mercaptan, dimethyl sulfide-based malodorous gases and vehicle access, causing leakage of leachate when loading and unloading and dust on the surrounding generate nuisance.



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