厭氧生物處理工藝的運(yùn)行管理
-
在消化池進(jìn)行正式投產(chǎn)運(yùn)行之前,需要進(jìn)行清水試驗(yàn),用以檢查消化池本身是否存在漏水、漏氣的問題;
-
隨后就可以向消化池中投放接種污泥,接種污泥通常來自于已經(jīng)成功運(yùn)行的消化池中的污泥,投放之前要采用濾網(wǎng)(2*2或5*5mm)進(jìn)行過濾。
-
接種污泥投放之后,就可以少量的投加濃縮后的生污泥;
-
對(duì)產(chǎn)氣量、沼氣的成分、pH、上清液的VFA(揮發(fā)性脂肪酸)等指標(biāo)進(jìn)行檢測(cè);
-
消化池正常運(yùn)行后,就可以逐步增加投泥量,經(jīng)過50~60天就可以達(dá)到設(shè)計(jì)時(shí)的負(fù)荷。
-
使用污泥啟動(dòng),培養(yǎng)出顆粒污泥,通常需要1~3個(gè)月的時(shí)間一般分為啟動(dòng)期、顆粒污泥形成期和顆粒污泥成熟期;
-
對(duì)于接種污泥,通常采用厭氧污泥消化池中的厭氧污泥;
-
培養(yǎng)過程中要求水溫,pH等環(huán)境條件要穩(wěn)定;
-
反應(yīng)器中的污泥負(fù)荷需要控制在0.05~0.1kgCOD/(kgSS·d),容積負(fù)荷則要小于0.5kgCOD/(m³·d);
-
VFA濃度需要保持在一個(gè)較低的濃度;
-
為了淘汰部分絮狀污泥,表面水力負(fù)荷要大于0.3m³/(㎡·d);
-
進(jìn)水中可以適當(dāng)?shù)奶峁o機(jī)顆粒(鈣、鐵等),必要時(shí)適當(dāng)補(bǔ)充微量金屬元素(鎳、鈷、鉬等),促進(jìn)產(chǎn)甲烷菌的生長(zhǎng);
顆粒污泥的形狀多種多樣,呈現(xiàn)出球形、卵形、絲狀等;
-
平均粒徑1mm,粒徑通常在0.1~2mm之間,最大的也能達(dá)到3~5mm;
-
顏色多為黑色、灰色和灰白色,也會(huì)出現(xiàn)黃色或鐵紅色。
Recommended Posts
-
In recent years, the hygienic condition of dental unit waterline (DUWL) has gradually received attention in China. At the same time, many local standards have been introduced. For example, Beijing issued "DB11/T 1703- 2019 Technical Specifications for Waterway Disinfection of Oral Comprehensive Treatment Units" on December 25th, 2019, while Zhejiang Province issued "DB33/T 2307-2021 Technical Specifications for Cleaning and Disinfection of Dental Waterway Systems" on January 29, 2021. In fact, various countries in the world have begun to pay attention to issues related to waterway pollution in dental treatment units much earlier, and have made relevant specifications. This article summarizes the standards of various countries in this regard as follows: Foreign standards related to the waterway of dental treatment units In 1996, the American De...
comment