生物脫硫工藝是20世紀(jì)80年代發(fā)展起來的常規(guī)脫硫 替代新工藝，通過微生物菌群的作用，將硫化物轉(zhuǎn) 化成單質(zhì)硫和硫酸。

　　Biological desulfurization process is a new conventional desulfurization process developed in the 1980s, which converts sulfides into elemental sulfur and sulfuric acid through the action of microbial communities.

       H2S + OH-→ HS-+ H2O    (1)

　　2HS-1 + O2→ 2S0 + OH- △G0= -169.35 KJ/mol    (2)

　　2HS-1 + 4O2→2SO42- + 2H+ △G0= -732.58KJ/mol (3)

　　生物脫硫特點與優(yōu)勢

　　Characteristics and advantages of biological desulfurization

　　.高效率：H2S脫除＞99%，簡易的濾料清洗程序 減少了系統(tǒng)的停機(jī)時間

　　High efficiency: H2S removal>99%, simple filter material cleaning program reduces system downtime

　　.低成本：與其它脫硫技術(shù)相比，運行成本最低 （0.03-0.05元/m3沼氣），能耗低

　　Low cost: Compared with other desulfurization technologies, it has the lowest operating cost (0.03-0.05 yuan/m3 biogas) and low energy consumption

　　.系統(tǒng)工藝穩(wěn)定：抗沖擊負(fù)荷高、操作彈性大

　　Stable system technology: high impact resistance and high operational flexibility

　　.占地面積小：緊湊、豎直的塔體設(shè)計節(jié)省占地

　　Small footprint: Compact and vertical tower design saves space

　　.高安全性：精準(zhǔn)的自動化控制操作，故障報警

　　High security: precise automation control operation, fault alarm

　　.維護(hù)簡單：少量的維護(hù)工作（如定期校正pH探頭）

　　Simple maintenance: Minor maintenance work (such as regularly calibrating pH probes)

　　.綠色環(huán)保：工藝水循環(huán)利用，單質(zhì)S可回收它用

　　Green and environmentally friendly: process water is recycled, and elemental S can be recycled for other purposes

　　1、酸式生物脫硫

　　1. Acid based biological desulfurization

　　原理：酸式生物脫硫工藝為生物滴濾池工藝。沼氣進(jìn)入脫硫塔后， 在塔內(nèi)微生物、氧氣和循環(huán)水的作用下完成H2S的吸收和降 解，凈化后的氣體從塔頂排出。微生物塔內(nèi)附著生長，非游 離態(tài)。

　　Principle: The acid biological desulfurization process is a biological drip filter process. After entering the desulfurization tower, biogas is absorbed and degraded by microorganisms, oxygen, and circulating water inside the tower. The purified gas is discharged from the top of the tower. Microbial tower attachment growth, non free state.

　　酸式生物脫硫特點

　　Characteristics of acid based biological desulfurization

　　一、適用范圍：

　　1、 Applicable scope:

　?、僬託庵蠬2S含量為500ppm-6000ppm，若H2S含量為500ppm-3000ppm效果更 佳；H2S含量為3500ppm-6000ppm堿式的成本更低；

　?、?The H2S content in biogas is 500ppm-6000ppm, and the effect is better if the H2S content is 500ppm-3000ppm; The cost of basic H2S with a content of 3500ppm-6000ppm is lower;

　　②產(chǎn)氣原料為油性或者非油性均可；

　?、?Gas production raw materials can be either oily or non oily;

　　③用途為集中供氣和普通用氣；

　?、?Intended for centralized gas supply and general use;

　　二、生物脫硫系統(tǒng)能夠確保脫硫后的沼氣中硫化氫含量≤ 20ppm，去除率達(dá)到 99%以上，很少有單質(zhì)S產(chǎn)生；

　　2、 The biological desulfurization system can ensure that the hydrogen sulfide content in the desulfurized biogas is ≤ 20ppm, with a removal rate of over 99%, and there is little production of elemental S;

　　塔內(nèi)惰性填料孔隙率高、阻力小，當(dāng)進(jìn)氣H2S含量＜4000ppm，1-2年需要清 洗填料；進(jìn)氣H2S含量＞4000ppm，則半年清洗填料；

　　The inert filler inside the tower has a high porosity and low resistance. When the H2S content in the intake is less than 4000ppm, the filler needs to be cleaned within 1-2 years; If the H2S content in the intake is greater than 4000ppm, clean the filling material within six months;

　　三、營養(yǎng)液的pH值維持在1.5左右，通過控制溶解氧（DO）即可維持。運行溫 度為30℃

　　3、 The pH value of the nutrient solution is maintained at around 1.5, which can be maintained by controlling dissolved oxygen (DO). Operating temperature is 30 ℃

　　2、堿式生物脫硫

　　2. Alkaline biological desulfurization

　　原理：堿式脫硫為生物洗滌器工藝。H2S在脫硫塔內(nèi)被吸收，而后在再 生池經(jīng)硫細(xì)菌的作用生成單質(zhì)S，單質(zhì)S可被分離利用，脫硫過程完成。微生物再生池內(nèi)附著生長，為非游離態(tài)。。

　　Principle: Alkaline desulfurization is a biological scrubber process. H2S is absorbed in the desulfurization tower and then generates elemental S through the action of sulfur bacteria in the regeneration tank. The elemental S can be separated and utilized, and the desulfurization process is completed. The attached growth in the microbial regeneration pool is non free..

　　堿式生物脫硫特點

　　Characteristics of alkaline biological desulfurization

　　適用范圍：

　　Applicable scope:

　?、僬託庵蠬2S含量為＞3500ppm；

　?、?The H2S content in biogas is>3500ppm;

　?、诋a(chǎn)氣原料為非油性物質(zhì)；或前端加除油裝置。

　　② The raw materials for gas production are non oily substances; Or add and remove oil device at the front end.

　?、圻m用于沼氣提純；

　?、?Suitable for biogas purification;

　　高效：沼氣中硫化氫去除率達(dá)99.5%以上，經(jīng)過脫硫的沼氣中甲烷含量可達(dá) 80%左右，因脫硫過程不僅能去除H2S，也能去除CO2；

　　Efficient: The removal rate of hydrogen sulfide in biogas reaches over 99.5%, and the methane content in the desulfurized biogas can reach about 80%, because the desulfurization process can not only remove H2S but also CO2;

　　安全可控：曝氣發(fā)生在再生池，塔的進(jìn)氣端沼氣內(nèi)的氧氣含量幾乎為零；

　　Safe and controllable: aeration occurs in the regeneration tank, and the oxygen content in the biogas at the inlet of the tower is almost zero;

　　需要加堿中和：系統(tǒng)運行過程中有小部分單質(zhì)S被氧化為硫

　　Alkaline neutralization is required: During system operation, a small portion of elemental S is oxidized to sulfur生物脫硫工藝是20世紀(jì)80年代發(fā)展起來的常規(guī)脫硫 替代新工藝，通過微生物菌群的作用，將硫化物轉(zhuǎn) 化成單質(zhì)硫和硫酸。

　　Biological desulfurization process is a new conventional desulfurization process developed in the 1980s, which converts sulfides into elemental sulfur and sulfuric acid through the action of microbial communities.

　　生物脫硫特點與優(yōu)勢

　　Characteristics and advantages of biological desulfurization

　　.高效率：H2S脫除＞99%，簡易的濾料清洗程序 減少了系統(tǒng)的停機(jī)時間

　　High efficiency: H2S removal>99%, simple filter material cleaning program reduces system downtime

　　.低成本：與其它脫硫技術(shù)相比，運行成本最低 （0.03-0.05元/m3沼氣），能耗低

　　Low cost: Compared with other desulfurization technologies, it has the lowest operating cost (0.03-0.05 yuan/m3 biogas) and low energy consumption

　　.系統(tǒng)工藝穩(wěn)定：抗沖擊負(fù)荷高、操作彈性大

　　Stable system technology: high impact resistance and high operational flexibility

　　.占地面積小：緊湊、豎直的塔體設(shè)計節(jié)省占地

　　Small footprint: Compact and vertical tower design saves space

　　.高安全性：精準(zhǔn)的自動化控制操作，故障報警

　　High security: precise automation control operation, fault alarm

　　.維護(hù)簡單：少量的維護(hù)工作（如定期校正pH探頭）

　　Simple maintenance: Minor maintenance work (such as regularly calibrating pH probes)

　　.綠色環(huán)保：工藝水循環(huán)利用，單質(zhì)S可回收它用

　　Green and environmentally friendly: process water is recycled, and elemental S can be recycled for other purposes

　　1、酸式生物脫硫

　　1. Acid based biological desulfurization

　　原理：酸式生物脫硫工藝為生物滴濾池工藝。沼氣進(jìn)入脫硫塔后， 在塔內(nèi)微生物、氧氣和循環(huán)水的作用下完成H2S的吸收和降 解，凈化后的氣體從塔頂排出。微生物塔內(nèi)附著生長，非游 離態(tài)。

　　Principle: The acid biological desulfurization process is a biological drip filter process. After entering the desulfurization tower, biogas is absorbed and degraded by microorganisms, oxygen, and circulating water inside the tower. The purified gas is discharged from the top of the tower. Microbial tower attachment growth, non free state.

　　酸式生物脫硫特點

　　Characteristics of acid based biological desulfurization

　　一、適用范圍：

　　1、 Applicable scope:

　　①沼氣中H2S含量為500ppm-6000ppm，若H2S含量為500ppm-3000ppm效果更 佳；H2S含量為3500ppm-6000ppm堿式的成本更低；

　　① The H2S content in biogas is 500ppm-6000ppm, and the effect is better if the H2S content is 500ppm-3000ppm; The cost of basic H2S with a content of 3500ppm-6000ppm is lower;

　?、诋a(chǎn)氣原料為油性或者非油性均可；

　?、?Gas production raw materials can be either oily or non oily;

　　③用途為集中供氣和普通用氣；

　　③ Intended for centralized gas supply and general use;

　　二、生物脫硫系統(tǒng)能夠確保脫硫后的沼氣中硫化氫含量≤ 20ppm，去除率達(dá)到 99%以上，很少有單質(zhì)S產(chǎn)生；

　　2、 The biological desulfurization system can ensure that the hydrogen sulfide content in the desulfurized biogas is ≤ 20ppm, with a removal rate of over 99%, and there is little production of elemental S;

　　塔內(nèi)惰性填料孔隙率高、阻力小，當(dāng)進(jìn)氣H2S含量＜4000ppm，1-2年需要清 洗填料；進(jìn)氣H2S含量＞4000ppm，則半年清洗填料；

　　The inert filler inside the tower has a high porosity and low resistance. When the H2S content in the intake is less than 4000ppm, the filler needs to be cleaned within 1-2 years; If the H2S content in the intake is greater than 4000ppm, clean the filling material within six months;

　　三、營養(yǎng)液的pH值維持在1.5左右，通過控制溶解氧（DO）即可維持。運行溫 度為30℃

　　3、 The pH value of the nutrient solution is maintained at around 1.5, which can be maintained by controlling dissolved oxygen (DO). Operating temperature is 30 ℃

　　2、堿式生物脫硫

　　2. Alkaline biological desulfurization

　　原理：堿式脫硫為生物洗滌器工藝。H2S在脫硫塔內(nèi)被吸收，而后在再 生池經(jīng)硫細(xì)菌的作用生成單質(zhì)S，單質(zhì)S可被分離利用，脫硫過程完成。微生物再生池內(nèi)附著生長，為非游離態(tài)。。

　　Principle: Alkaline desulfurization is a biological scrubber process. H2S is absorbed in the desulfurization tower and then generates elemental S through the action of sulfur bacteria in the regeneration tank. The elemental S can be separated and utilized, and the desulfurization process is completed. The attached growth in the microbial regeneration pool is non free..

　　堿式生物脫硫特點

　　Characteristics of alkaline biological desulfurization

　　適用范圍：

　　Applicable scope:

　?、僬託庵蠬2S含量為＞3500ppm；

　?、?The H2S content in biogas is>3500ppm;

　?、诋a(chǎn)氣原料為非油性物質(zhì)；或前端加除油裝置。

　?、?The raw materials for gas production are non oily substances; Or add and remove oil device at the front end.

　?、圻m用于沼氣提純；

　?、?Suitable for biogas purification;

　　高效：沼氣中硫化氫去除率達(dá)99.5%以上，經(jīng)過脫硫的沼氣中甲烷含量可達(dá) 80%左右，因脫硫過程不僅能去除H2S，也能去除CO2；

　　Efficient: The removal rate of hydrogen sulfide in biogas reaches over 99.5%, and the methane content in the desulfurized biogas can reach about 80%, because the desulfurization process can not only remove H2S but also CO2;

　　安全可控：曝氣發(fā)生在再生池，塔的進(jìn)氣端沼氣內(nèi)的氧氣含量幾乎為零；

　　Safe and controllable: aeration occurs in the regeneration tank, and the oxygen content in the biogas at the inlet of the tower is almost zero;

　　需要加堿中和：系統(tǒng)運行過程中有小部分單質(zhì)S被氧化為硫

　　Alkaline neutralization is required: During system operation, a small portion of elemental S is oxidized to sulfur

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