Study On High Concentrations Of Organic Wastewater Disposal Process

A great deal of organic wastewater was released in the production process of food, feed and feed additives. The wastewater is not only the high-color, high concentrations of org-antic matter, but also contain potassium, sodium and tannin. If we don't solve the problem as soon as possible, the surrounding environment will be seriously polluted.Based on general survey of the home and foreign study, a further research on ante. robic hydrolysis acidification process for organic wastewater was carried out in order to provide more effective theoretic basis and desing advice to its industriyThe pilot of the sludge through the cultivation and domestication, have been qualified sludge, and the determination of the properties. And then take glucose solution, soy sauce and pyridine wastewater effluent for research on acid hydrolysis pretreatment of the theoretical study.Firstly ,with the glucose used as the only carbon source, the effects of HRT, pH and OL on anaerobic hydrolysis acidification process were studied.The experimental result showed that the optimum condition are pH=7.0 and the influent concentration of CODcr below 5000 mg/L, and the maximum acidification efficient (AE) and acidification degree (AD) were 44.6% and 64.6%.Then, the process was carried out to pretreat the soy sauce wastewater, and the result indicated that it call obviously improve the biodegradability of the wastewater and shorten the residence time of the aerobic process Under the condition of pH=7.0 and HRT=4h, the BOD5/CODcr ratio of the soy sauce wastewater was improved from 0.34 to 0.52. CODcr removal rate up to 15.35 percent.Moreover, for the pyridine wastewater, which was hardly degraded by the aerobic and the anaerobic treatment, the process was proved to be a 200d pretreatment method in this experiment Under the condition of pH=6.0 and HRT=60h. The pyridine can be degraded completely at influent concentration below 50 m/L, and the percent conversion can reach 75.27% and 55.86% at the influent concentration of 102.7 mg/L and 198.4 mg/L, respectively.For a company commssioned by the wastewater treatment works, according to acid hydrolysis pretment come to the optimyn conditions, based on the national standards for sewage discharge and the polices and measures of environmental protection, a process related to the design is given. The trial operation showed that meet users' requirements.