发泡多孔性藻朊酸钙胶体在UASB反应器生物造粒中的应用研究

Study on the Cultivation of Granular Sludge in a UASB reactor with a Foaming Porous Calcium Alginate Colloid.

在ＵＡＳＢ反应器启动初期．以发泡性藻朊酸钙胶体为形成生物粒子的核和促进造粒的辅助剂，进行加速ＵＡＳＢ反应器启动试验的研究，并论述了藻朊酸钙胶体的制作过程。在ＵＡＳＢ反应器中，接种污泥后立即培养，然后投入已制成的该胶体与菌种混合。经过２０ｄ的连续运转，甲烷含量达７０％、ＴＯＣ去除率为７０％，颗粒内部作为核的藻肪酸钙胶体已被微生物所取代，生物粒子的沉速为３００ｍｍ／ｍｉｎ，粒子数为７０００个／ｍｌ左右。试验表明，在较短的时间内形成了高活性和良好沉降性能的颗粒污泥，取得较为满意的结果。

Based on the experiment,this paper describes the effects of foaming porous calcium alginate colloids,as the nuclues of biological granula and the promoter of granular sludge,on the accelaration of operation at the beginning of up flow in an anaerobic sludge bed reactor.It also indicates the process of producing calcium alginate colloids.In the reactor,sludge was cultivated immediately after the microorganisms were introduced,then the produced colloids were taken to mix with the microorganisms. After a continuous 20 day operation, the measurements showed that the content of CH4 decreased to 70%and the removal rate of TOC reached 70% when calcium alginate colloids,as the nucleus of granula,were replaced by microorganisms with the sedimentation of biological granula at a rate of 300mm/min and a number of about 700 particles/ml. A satisfactory result was obtained by giving a granular sludge of high activities and better sedimentation performance.