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<p><span>污水可生化性指的是污水中污染物被微生物降解的難易程度，即污水生物處理的難易程度。污水的可生化性取決于污水的水質(zhì)，即污水所含污染物的性質(zhì)。若污水的營(yíng)養(yǎng)比例適宜，污染物易被生物降解，有毒物質(zhì)含量低，則污水的可生化性強(qiáng)，反之亦然。適于微生物生長(zhǎng)的污水，可生化性強(qiáng)，不適于微生物生長(zhǎng)的污水可生化性差。</span></p><p><span><br/></span></p><p><span>1、污水可生化性評(píng)價(jià)方法</span></p><p><span>污水的可生化性常用BOD5或COD的比值來(lái)評(píng)價(jià)。5日生化需氧量BOD5粗略代表可生物降解的還原性物質(zhì)的含量（主要是有機(jī)物），化學(xué)需氧量COD粗略代表還原性物質(zhì)（主要為有機(jī)物）的總量。</span></p><p><span><br/></span></p><p><span>由BOD5/COD=1/m*CODB/COD（CODB為可生物降解的還原性物質(zhì)含量）知，BOD5/COD為還原性物質(zhì)中可生物降解部分所占的比例（CODB/COD）與生物降解速度（1/m）的乘積，能粗略代表還原性物質(zhì)可生物降解的程度和速度，即污水的可生化性。一般情況下，BOD5/COD值越大，污水的可生化性越強(qiáng)，具體評(píng)價(jià)標(biāo)準(zhǔn)參照表1。</span></p><p><span><br/></span></p><p><span>表1　污水可生化性評(píng)價(jià)標(biāo)準(zhǔn)</span></p><p><span><br/></span></p><p><span>2、污水可生化性評(píng)價(jià)中的注意事項(xiàng)</span></p><p><span>BOD5/COD只能近似代表污水的可生化性，適用BOD5/COD評(píng)價(jià)污水的可生化性時(shí)應(yīng)考慮以下方面的影響。</span></p><p><span><br/></span></p><p><span>⑴ 固體有機(jī)物</span></p><p><span><br/></span></p><p><span>有些固體有機(jī)物可在COD測(cè)定中被重鉻酸鉀氧化，以COD的形式表現(xiàn)出來(lái)，但在BOD5測(cè)定時(shí)對(duì)BOD5的貢獻(xiàn)很小，不能以BOD5的形式表現(xiàn)出來(lái)，致使此時(shí)污水的BOD5/COD雖小，但生物處理的效果卻不差。</span></p><p><span><br/></span></p><p><span>⑵ 無(wú)機(jī)還原性物質(zhì)</span></p><p><span><br/></span></p><p><span>污水中的無(wú)機(jī)還原性物質(zhì)在BOD5和COD的測(cè)定中也消耗溶解氧。同一種無(wú)機(jī)還原性物質(zhì)在兩種測(cè)定中消耗的溶解氧量不同，指示BOD5/COD降低，但此時(shí)污水的可生化性不一定差。</span></p><p><span><br/></span></p><p><span>⑶ 特殊有機(jī)物</span></p><p><span><br/></span></p><p><span>有些有機(jī)物比較特殊，能被微生物部分氧化，卻不能被K2Cr2O7氧化。BOD5/COD雖大，但實(shí)際上污水的可生化性較差。</span></p><p><span><br/></span></p><p><span>⑷ BOD5/TOD</span></p><p><span><br/></span></p><p><span>TOD比COD更能準(zhǔn)確代表污水中有機(jī)物的含量，用BOD5/TOD評(píng)價(jià)污水的可生化性更加準(zhǔn)確。</span></p><p><span><br/></span></p><p><span>⑸ 接種微生物的馴化</span></p><p><span><br/></span></p><p><span>在測(cè)定BOD5時(shí)是否采用經(jīng)過(guò)馴化的菌種，對(duì)測(cè)定結(jié)果影響很大。采用未經(jīng)馴化的微生物接種，測(cè)得的結(jié)果偏低，采用經(jīng)過(guò)馴化的微生物接種，測(cè)得的結(jié)果更加符合處理設(shè)施的實(shí)際運(yùn)行情況。接種未經(jīng)馴化的微生物測(cè)得的BOD5/COD偏低，由此推斷污水的可生化性較差是不符合實(shí)際情況的。因此，在測(cè)定BOD5時(shí)，須接入馴化菌種。</span></p><p><span><br/></span></p><p><span>⑹ 水樣稀釋</span></p><p><span><br/></span></p><p><span>測(cè)定BOD5時(shí)，往往需要對(duì)原污水加以稀釋。因?yàn)橛卸疚镔|(zhì)在濃度不同時(shí)毒性不同，所以，不同的稀釋比對(duì)測(cè)定結(jié)果影響很大。合成有機(jī)物、無(wú)機(jī)鹽、重金屬、硫化物和SO42－等在濃度高時(shí)對(duì)微生物有毒害作用，而微生物的生長(zhǎng)，此時(shí)污水的可生化性較差。如果在測(cè)定這種污水的BOD5時(shí)，水樣將稀釋，則由于有毒物質(zhì)濃度降低，毒性減弱，所以污水可生化性增強(qiáng)，測(cè)得的BOD5/COD高。由此推斷原污水的可生化性較強(qiáng)是錯(cuò)誤的。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">產(chǎn)品介紹</span></strong></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">GNST-900S 基于物聯(lián)網(wǎng)智能化發(fā)展思路，歷經(jīng) 3 年研發(fā)的全新一代高性能、高可靠性的多參數(shù)水質(zhì)測(cè)定儀，儀器采用 LED 冷光源和光學(xué)結(jié)構(gòu)，搭載 Genesite 智能檢測(cè)系統(tǒng)，每秒可進(jìn)行十幾次數(shù)據(jù)均化計(jì)算，采用 ST32 位 ARM 處理器，運(yùn)轉(zhuǎn)速度更快，穩(wěn)定性更強(qiáng)。從而飛躍性的實(shí)現(xiàn)了水質(zhì)測(cè)定儀的智能化、高性能、低噪音、穩(wěn)定性強(qiáng)的特點(diǎn)。8 英寸 IPS高清彩色觸摸屏，讓檢測(cè)結(jié)果直觀明了，可檢測(cè) COD、氨氮、總磷、總氮、重金屬等 40 多種檢測(cè)項(xiàng)目，產(chǎn)品內(nèi)置水質(zhì)分析、光度測(cè)量、系數(shù)曲線、樣品曲線等多種應(yīng)用程序。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">應(yīng)用領(lǐng)域</span></strong></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">儀器廣泛應(yīng)用于科研院所、污水處理、環(huán)境監(jiān)測(cè)、石化、造紙、制藥、印染、紡織、皮革、釀酒、電子、市政、</span> <span style="font-family:微軟雅黑">高校等行業(yè)并受到廣大用戶的*。</span> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">測(cè)定原理</span></strong></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">•COD的測(cè)定依據(jù)《HJ/T 399-2007水質(zhì) 化學(xué)需氧量快速消解分光光度法》</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">•氨氮的測(cè)定依據(jù)《HJ 535-2009 水質(zhì) 氨氮的測(cè)定納氏試劑分光光度法》</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">•總磷的測(cè)定依據(jù)《GB 11893-89水質(zhì)總磷的測(cè)定鉬酸銨分光光度法》</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">•總氮的測(cè)定依據(jù)《</span><span style=";font-family:宋體;font-size:16px">變色酸法</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">》</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">產(chǎn)品特點(diǎn)</span></strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>1）支持 COD、氨氮、</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">總磷、</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">總氮、色度、懸浮物、濁度、重金屬等</span> 40 多種水質(zhì)污染物的測(cè)定。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>2）LED 冷光源 10 萬(wàn)小時(shí)光學(xué)壽命，性能穩(wěn)定，檢測(cè)結(jié)果準(zhǔn)確。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>3）搭載 Genesite 智能檢測(cè)系統(tǒng)，每秒可進(jìn)行十幾次數(shù)據(jù)均化計(jì)算，配合濾波算法濾除干擾，提高檢測(cè)數(shù)據(jù)準(zhǔn)確性。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>4）ST32 位 ARM 處理器，運(yùn)轉(zhuǎn)速度更快，穩(wěn)定性更強(qiáng)。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>5）8 英寸 IPS 級(jí)高清彩色電容觸摸屏，畫質(zhì)清晰，反應(yīng)靈敏。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>6）ABS 材質(zhì)，高強(qiáng)度、耐腐蝕、耐高溫外殼。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>7）多參數(shù)水質(zhì)測(cè)定儀和消解儀采用分體式設(shè)計(jì)，不影響光源系統(tǒng)和光學(xué)傳感器的穩(wěn)定性。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>8）檢測(cè)結(jié)果自動(dòng)打印、批量檢測(cè)、引導(dǎo)檢測(cè)模式等功能。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>9）引導(dǎo)式操作系統(tǒng)，扁平式 UI 設(shè)計(jì)，使用者初次上手便能快速完成污染物檢測(cè)。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>10）配備</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">SJ-16X</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">多功能智能消解儀，僅需一鍵完成項(xiàng)目消解。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">（</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">11</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">）</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">搭配</span>GENEX系列移液器，輕巧耐用，移液準(zhǔn)確</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>1</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">2</span><span style="font-family: 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