Anaerobic Acid Phase Production Acid Bacteria And Sulfate Reducing Bacteria Collaborative Production Acid Desulfurization Test Research

There are many contradictions and defects in traditional biological nitrogen phosphorus removal process, Containing sulfate in the traditional treatment of high concentration organic wastewater technology bear the main Removal of sulfate-reducing bacteria (SRB) and methane-producing bacteria (MPB) exists on Camp oxygen matrix-competitive effects, Thereby inhibiting the activity of sul fate-reducing bacteria (SRB),Resulting in different degrees of reduction of the sulfate removal efficiency. Proposed system as an effective solution to the contradictions and shortcomings of the traditional craft has opened up a new way to produce acid-sulfate reduction,The sulfate removal efficiency is greatly improved.The test on the basis of previous studies, Experimental study of aci do genie sulfate reduction in the two-phase anaerobic process. First start by determining the best start condition on the acid-producing reactor; And then, on the basis of stable operation in the acid-producing reactor, Acid production-the start of the sulfate-reducing reactor Experimental Study, Synergy and explore of SRB bacteria and AB bacteria during start-up; Finally, the acid production sulfate-reducing reactor stable operation on the basis of, Investigating COD/SO42-with HRT ABR reactor SRB bacteria degrading ability.Adption low load start mode, After33d of the boot process, the acid production phase COD removal efficiency of more than40%and is in a stable state, continue to lower the pH value, stabilized at between4.0to4.3, and the effluent VFA is risingstable at about1400mg/L, effluent alkalinity continue to reduce until zero, the acidogenic phase started successfully.Amond acid-sulfate-reducing reactor,whenCOD/SO42-is3, AB bacteria to maintain stable hydrolysis acidification capacity, SRB bacteria can timely degradation the AB liquid end products of the bacteria, and can increase by10%to15%degree of acidification; able to achieve the synergy of good bacteria and SRB bacteria AB.Control HRT of8.5h, influent COD3000mg/L (glucose) in the case of water sulphate removal gradually decreased With COD/SO42-reduced;COD/SO42-6,ABR reactionis obvious production acid-sulfate-reducing phase and methanogenic phase,split-phase characteristics,with the COD/SO42-decreases due to the increase in sulfate stimulated SRB bacteria degradation of SO42-removal of spread to the respective compartment, the methane production in the reactor is gradually weakened.Control COD/SO42-of3circumstances the effluent sulfate removal gradually reduced, with the decrease of HRT. HRT of8h, ABR sulfate removal occurred in compartment1With the decrease of HRT bear sulfate main compartment remove gradually move backward when HRT reduced to2h removal of sulfate, ABR2,3compartment.Acid production in the two-phase anaerobic biological desulfurization test phase, an effective solution to the contradictions and shortcomings of the traditional biological desulfurization process, improve biological desulfurization efficiency.