Processing technique for comprehensive waste water of saponin-alcohol

Abstract

The invention relates to a processing technique for comprehensive waste water of saponin-alcohol. The processing technique for comprehensive waste water of saponin-alcohol is characterized by comprising the following steps: 1) draining the comprehensive waste water of saponin-alcohol into a regulating reservoir at first, infiltrating the comprehensive waste water of saponin-alcohol into a primary pH regulating desilter to regulate the pH value to 5.0-6.5, and then depositing; 2) improving the temperature of the comprehensive waste water into 30 DEG C by a sewage pump through a heat exchanger, and then pumping the comprehensive waste water into a hydrolytic acidification tank to implement hydrolysis acidification reaction; 3) spilling the comprehensive waste water into an acidification settling tank for clarification, and pumping the supernate into an inner aeration electrolyzation reactor to generate electrolyzation reaction; 4) feeding the supernate into a secondary pH regulating desilter to regulate the pH value to 7.0-8.0 and then depositing; 5) pumping the supernate into a collector well and improving the temperature to 38 DEG C, then feeding the supernate into an improved UASB reactor to implement anaerobic treatment through a charge pump; 6) feeding the supernate into a five-grade bio-contact oxidation reactor to implement aerobic treatment; 7) recycling or discharging the effluent after the supernate enters a depth processing unit and is processed after the flowing of the effluent flowing into the desilter to deposit.

Description

technical field [0001] The invention relates to a treatment process for saponin-alcohol comprehensive wastewater. Background technique [0002] Currently, the production of turmeric saponin mainly adopts acid hydrolysis process, including sulfuric acid method and hydrochloric acid method. The application of turmeric saponin SMRH clean production process has basically eliminated the largest source of water pollution, the hydrolysis stock solution produced by turmeric saponin. Compared with the traditional process, the production of wastewater from the production line (that is, "SMRH terminal wastewater") and COD concentration Both have dropped significantly, which has reduced the treatment capacity and difficulty of treatment of saponin production wastewater. [0003] The final wastewater of turmeric saponin SMRH clean production process, that is, the comprehensive wastewater is mainly "SMRH terminal wastewater" and "alcohol wastewater" produced by the by-product sugar liqui...

AI Technical Summary

Problems solved by technology

Although the COD concentration of the comprehensive wastewater has decreased significantly compared with the traditional saponin wastewater, the comprehensive wastewater still has poor biodegradability (m(BOD 5 ) / m(COD)=0.25~0.30), high pollution load (COD=15000~25000mg / L), high acidity (pH=1.5~3.0), SO 4 2- It is characterized by high content (6500-8000mg / L), high chroma (600-1000 times), and contains water-soluble saponins, tannins, pectin and other substances that are toxic to microorganisms. It is a high-concentration refractory organic wastewater

At present, there is no industrialized treatment project that effectively treats saponin wastewater

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