Papers by Author: Chun Liu

Abstract: Sequencing Batch Reactor (SBR) was investigated for the treatment of liquor wastewater in this paper. This study includes the test of start-up of the SBR, running of the reactor by treating the wastewater. During the start-up process the activated sludge was cultured and acclimated. After acclimation the removal efficiency of COD_cr can reach around 99%. Following investigations were focused on evaluation of the treatment efficiency and the reactive cycle during running the SBR. The experimental results showed that running parameters of SBR reaction system were Fill 0.5 h, React 10.0 h, Settle 2.0~2.5 h, Drain 0.5h, Idle 4.0h. Under these conditions the removal rate of COD_cr can reach 99%. So the performance of SBR for the wastewater was satisfactory as the wastewater had 1400~2000mg/l of COD_cr. The cyclic operation of SBR used in this study proved more effective in treating the wastewater.

Abstract: The effect of chelating agents Diethylene Triamine Penta Methylene Phosphonic Acid in bamboo kraft cooking was studied. The results show that the bamboo pulp yield was 49.52% when DTPMPA dosage is 0.4%, at the same time the Kappa number was lower. With the increasing of DTPMPA dosage in bamboo kraft pulping, the bamboo pulp strength was increased.

Abstract: This paper focused on the effluent chroma which is a long-term puzzle about the aerobic treatment for pulping midcourse wastewater. The organic in the influent and effluent was tested by GC-MS. The analysis indicates that the macromolecular lignin-type substances are partly degraded using aerobic technique. Some micromolecular substances are produced accordingly, which leads to the auxochrome groups and chromophore groups increasing. There are two organic coloration compositions in influent but three in effluent, which account for 22.98% of the organic substances in influent but 33.12% of the organic substances in effluent.