2 research outputs found
νμ§λ―Έμλ¬Όμ λΆμμλ¬Όνμ μ 보λ₯Ό λ°μνλ μνμ λͺ¨λΈμ κ°λ°
νμλ
Όλ¬Έ (μμ¬)-- μμΈλνκ΅ λνμ : 건μ€ν경곡νλΆ, 2012. 2. μ νν.νμ±μ¬λ¬μ§λ₯Ό ꡬμ±νλ λ―Έμλ¬Όμ νμ±μ¬λ¬μ§ λͺ¨λΈ(ASM)μμ λ§€μ° λ¨μννμ¬ κ΅¬λΆνκ³ μμΌλ©°, νμμ²λ¦¬ μμ€ν
μ ꡬμ±κ³Ό ν¨μ¨μ νκ°νκ³ μμΈ‘νλλ° μμ΄μ νμ±μ¬λ¬μ§μ νμ§λ₯μ λ§€μ° μ€μν μμμμλ λΆκ΅¬νκ³ λλ ₯ν κ³μλ νλμ μμλ‘ κ΅¬μ±λμ΄ μλ€. νμ± μ¬λ¬μ§μ μν νμ§λ°μμ μ°νλ μ§μλ₯Ό νκΈ°μ νμκ³Όμ μ ν΅νμ¬ κΈ°μ²΄ μνλ‘ λ§λ€μ΄ λκΈ° μ€μΌλ‘ λλ €λ³΄λ΄λ κ³Όμ μΌλ‘μ νμ μ€ μ§μ μ±λΆμ μ κ±°νλ κ³Όμ μ ν μΆμ λ΄λΉνλ€.
λ³Έ μ°κ΅¬μμλ κΈ°μ‘΄μ 곡νμ μΈ νμ§λ₯ λΆμλ°©λ²μΈ NUR batch testμ nitrite reductaseλ₯Ό μ΄μ©ν λΆμμλ¬Όνμ μΈ λΆμλ°©λ²μ ν΅νμ¬ μλ£λ₯Ό μμ§νκ³ , λΆμμλ¬Όνμ μ 보λ₯Ό λ°μν NUR batch test λͺ¨μ¬ λͺ¨λΈμ κ°λ°νμ¬ λͺ¨λΈλ‘λΆν° νμ§λ₯μ μμΈ‘νκ³ μ μλνμλ€. μ΄μ AO 곡μ κ³Ό MLE 곡μ μ νμ§λ₯κ³Ό nir-gene μ λμ 보λ₯Ό μ΄μ©νμ¬ νμ§λ―Έμλ¬Όμ λνλ΄λ XDenμ ASM2μ μ μ©νμλ€. λͺ¨λΈμ μ μ©ν λ€μν νμ±μ¬λ¬μ§λ₯Ό ν보νκΈ° μν΄ AO 곡μ κ³Ό Bardenpho 곡μ μ μ€νμ€μμ μ½ 80μΌκ° μ΄μ νμκ³ , λ€μν 곡μ μΌλ‘ μ΄μ λλ μ¬λ¬ νμμ²λ¦¬μ₯μ λ°©λ¬Ένμ¬ μνλ§ νμλ€. νμ± μ¬λ¬μ§ μνμ NUR batch testλ₯Ό μ€μνμ¬ νμ§λ₯μ μΈ‘μ νκ³ νμ§ λ―Έμλ¬Όμ μ λνλ₯Ό μν΄ Real-time PCRμ μννμλ€.
μ’
μμμλ―Έμλ¬Ό(XH) μ€, νμ§λ―Έμλ¬Όμ΄ 80%μ ν΄λΉνλ€λ μλ―Έλ‘ μ¬μ©λλ Ξ·NO3μ defaultκ°μΈ 0.8μ νμ§λ₯κ³Ό μκ΄κ΄κ³κ° μμμ νμΈνμλ€. λ°λ©΄μ, νμ§λ₯κ³Ό λΉλ‘κ΄κ³μ μλ XDenμ nirSμ nirKμ μ μ μ μμ ν©κ³Όλ λΉλ‘κ΄κ³μ μλ€.
μ€νμ€μμ μ΄μ ν λ°μμ‘°μ NUR batch test κ²°κ³Ό, λ°μμ‘° μ μ
μμ μ§μμ νμμ μ μ
λμ΄ μλμ μΌλ‘ μ»Έλ Bardenpho λ°μμ‘°μ νμ§λ₯μ΄, AO λ°μμ‘°μ λΉν΄ μλ±ν λμλ€. λν, μ¬λ¬ νμμ²λ¦¬μ₯μ μ¬λ¬μ§λ₯Ό μ΄μ©ν NUR batch test κ²°κ³Ό, νκ· μ μΌλ‘ 5μμ νμ§λ₯μ΄ κ°μ₯ λμμΌλ©°, T νμμ²λ¦¬μ₯μ νμ§λ₯μ΄ λ€λ₯Έ νμμ²λ¦¬μ₯ μ€ νκ· νμ§λ₯μ΄ κ°μ₯ λμ κ²μΌλ‘ λ°νμ‘λ€.
Real-time PCR λΆμ κ²°κ³Ό, νμ§λ₯μ΄ λμ νμ± μ¬λ¬μ§ μνμμλ λ§μ μμ nir μ μ μκ° μ‘΄μ¬νμλ€. λ°λΌμ νμ± μ¬λ¬μ§ λ΄μ μ‘΄μ¬νλ nir μ μ μμ μμ ν΄λΉ μ¬λ¬μ§μ νμ§λ₯μ κ²°μ νλ κ²μΌλ‘ μ¬λ£λλ€.
XDen μΈμλ₯Ό ν¬ν¨νλ modified ASM2κ° μ€νμ€ κ·λͺ¨μ νμ₯ κ·λͺ¨μ νμ±μ¬λ¬μ§ μνμ λνμ¬ μ€μΈ‘ μλ£μ κ°κΉκ² NUR batch testλ₯Ό λͺ¨μ¬νμλ€. λ°λΌμ νμ± μ¬λ¬μ§μ νμ§λ₯μ μμΈ‘ν μ, nir μ μ μμ μ λμ 보λ₯Ό λ°μνλ κ²μ μλ‘μ΄ νλμ μ μ©ν λ°©μμ΄λΌκ³ μ¬κ²¨μ§λ€.In the activated sludge process, denitrification is a representative nitrogen removal reaction. The ASM2 simulation of nitrogen removal helps engineers to understand and operate their treatment plant but this model generally lacked sufficient credibility. The objective of this study is to develop a modified ASM2 specific for denitrification.
Using previous study data, the ASM2 was modified reflecting quantitative information of nir - gene which is nitrite reductase. The modified ASM2 included a factor XDen which denitrifying heterotrophic biomass. The sludge samples from laboratory AO and Bardenpho processes and four WWTPs were obtained and performed NUR batch test and real-time PCR analysis to know denitrification potential and denitrifying bacteria abundance respectively. These data were applicated to ASM2 and modified ASM2 for simulation of NUR batch test.
In the modified ASM2, the calculated value of XDen is proportional to the measured sum of nir - gene quantity and the denitrification potential. The denitrification potential was higher in Bardenpho process than AO process reactor. Also, the denitrification potential of WWTPs' sludge was affected by various WWTPs' conditions. In all samples, the sum of nir - gene quantity indicates the denitrification potential of activated sludge. The modified ASM2 reflecting molecular information can simulate NUR batch test. As a result, it is a new alternative using quantitative information of nir-gene to estimate denitrification potential.Maste