CAJ | 학술논문

以城市污水处理厂的储泥池高浓度的污泥作为研究对象,用Fe2+活化过硫酸钠( PDS)产生具有强氧化性的硫酸根自由基对污泥进行氧化破解。分别探讨同反应时间、初始pH、 C( Fe2+)/C( S2 O2-8)、 PDS投加量以及不同的反应温度对污泥破解能力的影响。结果表明：当C(PDS)=15 mmol/L、 C(Fe2+)/C(S2O2-8)=0.3、 T=35℃、 pH=3的较优条件下反应8 h,污泥比阻(SRF)从1.65e+11降到4.6e+10,溶解性COD(SCOD)从85 mg/L升高到550 mg/L。随着pH的增加,提高C(Fe2+)/C(S2O2-8)度均使污泥破解效果逐渐减弱,而升高温度有利于污泥破解。
이성시오수처리엄적저니지고농도적오니작위연구대상,용Fe2+활화과류산납( PDS)산생구유강양화성적류산근자유기대오니진행양화파해。분별탐토동반응시간、초시pH、 C( Fe2+)/C( S2 O2-8)、 PDS투가량이급불동적반응온도대오니파해능력적영향。결과표명：당C(PDS)=15 mmol/L、 C(Fe2+)/C(S2O2-8)=0.3、 T=35℃、 pH=3적교우조건하반응8 h,오니비조(SRF)종1.65e+11강도4.6e+10,용해성COD(SCOD)종85 mg/L승고도550 mg/L。수착pH적증가,제고C(Fe2+)/C(S2O2-8)도균사오니파해효과축점감약,이승고온도유리우오니파해。
The oxidative disintegration of sludge in wastewater treatment plant as main target by strong oxidizing sulfate radicals generated from sodium peroxydisulfate ( PDS) activated by Fe2+ was studied. The effects of initial time, initial solution pH, mol ratio of Fe2+and PDS C( Fe2+)/C( PDS) , PDS dosage and reaction temperature were investigated. The results showed the sludge specific resistance decreased from 1. 65 e+11 to 4. 6 e+10 and soluble chemical oxygen demand ( SCOD) increased from 85 mg/L to 550 mg/L in 8 h under typical condition:C( PDS)=15 mmol/L, C( Fe2+)/C(PDS)=0. 3, pH=3 and 35 ℃. The sludge disintegration effect decreased with the increasing pH and C(Fe2+)/C( PDS). Moreover, increasing reaction temperature would promote sludge distinguish.