ABSTRACT
The design entitled "Xuanhua a woolen mill wastewater treatment process design," The works are mainly treated sewage effluent from dyeing and washing lines, washing blankets, embroidery workshop wastewater components. Confirmed by the construction side, the design of handling the largest-scale water daily : 2500 cubic meters per day (including water discharge from the station). Sewage major pollutants CODcr, SS, BOD5, S2-, color, the effluent quality are as follows : dyeing wastewater : CODcr=1495mg/L, BOD5=340mg/L, SS=540mg/L. S2-=1.35-2.16mg/L, pH=3.7-8.62, color 300 times; washing line, washing blankets, embroidery workshop wastewater:CODcr=480mg/L, BOD5=300mg/L. SS=200mg/L, S2-=1.2mg/L, PH=3.7-8.62. color 50 times. The average winter temperature -14.9 ℃, average summer temperature of 29.2 ℃, with the average rainfall 427.1mm. Winter winds led to the northwest, the summer winds led to the southeast. Water Disposal Station : BOD5 ≦ 20mg/l, CODcr ≦ 100mg/l, SS ≦ 70mg/l, PH=6-9, color ≦ 50, the effluent quality in the state's two emission standards.
The design acid hydrolysis Biological oxidation wastewater treatment. Dealing with the main structures regulation pool, pool acid hydrolysis, biological oxidation pond, the vertical flow sedimentation tank, concentrated pool, pumping stations, Dehydration room and the other blower. The main structures of biological oxidation pond used for the traditional contact-oxidation, using a total of two, each divided into eight blocks. significant treatment effect. Pretreatment Regulation pools and pool acid hydrolysis effectively reduce the sewage indicators of biological oxidation pond inundated. Intake provides the best indicator, but also effectively reduce sewage color, plus behind the vertical flow sedimentation tank of flocculation and sedimentation, color indicators greatly reduced. Basically meet water requirements.
Keywords : dyeing wastewater wastewater treatment biological oxidation