Method for reclaiming saponifying abietyl from industrial waste water and device thereof

Abstract

The invention provides a way for recovering the saponified rosin in industrial sewage, which is characterized in that first the anti-dyeing wax on wax-printed figured cloth is withdrawn by caustic soda, and a lot of saponified rosin is left in the sewage; the sewage containing a lot of saponified rosin is collected and stored, and conveyed into a neutralizing and separating device; the acid amount necessary for the neutralizing reaction is adjusted by monitoring the pH value of the sewage from wax printing by a pH meter; meanwhile, the sewage and the acid are mixed evenly by a mixer; the sewage from wax printing is heated by a heater, and the suspended rosin particles are separated to the max. extent, then the suspended rosin particles are sent again to a hi-temperature furnace for smelting, the foreign matter and water are removed by filtering; one or a plurality of hi-temperature smeltings can be done, till the rosin is purified and solved and recovered. The invention is of simple process, easy to operate, of good efficiency and low cost. The invention saves natural resource, protects the ecologic environment, and facilitates the emission of waste near to null. The invention greatly improves the utilization of natural resource, is an ideal way and equipment for recovering saponified rosin in industrial sewage.

Description

technical field [0001] The invention relates to waste water treatment technology, more specifically, a method and a device for recovering saponified rosin from industrial waste water used for the treatment and reuse of pollution sources such as printing and dyeing sewage and waste water. Background technique [0002] Rosin is an important chemical raw material, widely used in papermaking, chemical and other industries. In recent years, rosin has only been used in the production of resist printing of batik fabrics. The industrial wastewater of the existing batik printing cloth production plant contains a large amount of saponified rosin, only 50% of which can be recovered by machinery, and 50% of the rosin is discharged with the sewage after being saponified by caustic soda, and the COD value of the wastewater is as high as tens of thousands to tens of thousands. Tens of thousands have seriously damaged the surrounding environment. If it cannot be treated thoroughly, it wil...

AI Technical Summary

Problems solved by technology

At present, there is still a serious shortage of rosin supply, which poses a serious threat to the development of related industries

However, the traditional batik sewage treatment cannot meet the standards of environmental protection. It is often the key finer of the environmental protection department. Simply relying on fines cannot solve the pollution problem. How to solve the problem of batik wastewater treatment is the current batik manufacturer's control of environmental pollution. The existing batik wastewater treatment technology can no longer meet the needs of people's work and life

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