A method for producing ramie degumming water by using waste water discharged up to standard

Abstract

The invention belongs to the technical field of sewage treatment, discloses a method for producing ramie degumming water from emission compliance wastewater, and aims to solve the problem of producing the ramie degumming water from emission compliance wastewater. The method comprises the following steps: 1) conveying the emission compliance wastewater to a flocculation settling pond, and adding polymeric aluminum chloride into the flocculation settling pond by using a dosing machine; 2) conveying the water treated in the step 1) to a hydrolysis acidification pool, wherein combined packing is suspended inside the hydrolysis acidification pool; 3) conveying the water treated in the step 2) into an oxidation pond, wherein the oxidation pond is equipped with an ozone generator, and ozone generated from the ozone generator is mixed with the water and is ejected into the oxidation pond together; 4) conveying the water treated in the step 3) into a filter tank, wherein a stainless steel support rack and backwash nozzles are mounted at the bottom of the filter tank, and a quartz sand layer, a carbon core layer and a pebble bed are sequentially arranged from top to bottom at the upper end of the stainless steel support rack inside the filter tank.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for producing ramie degumming water by using waste water discharged up to the standard. Background technique [0002] Ramie is commonly known as "Chinese grass", and its main production areas are in Sichuan, Hunan and other places in China; there is no ramie abroad, so there are no ramie degumming companies abroad. Degumming ramie to produce lean hemp for spinning and weaving is a very important link in the hemp spinning industry. Due to the high water consumption of ramie degumming, the production of one ton of dry hemp requires 380-400 cubic meters of water, which is a high water consumption industry, and water shortage is also a common problem faced by the whole hemp spinning industry. During the "brilliant" period of hemp textile production, there were more than 400 hemp spinning enterprises in the country, but they were gradually closed down. U...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the water quality requirements of ramie degumming water cannot be met by the external drainage (standard water) of the existing factory that has been treated up to the standard, the present invention provides a method for producing ramie degumming water using the wastewater that has been discharged up to the standard, which can treat the factory that has been treated up to the standard The external drainage (standard water) is treated twice to meet the water quality requirements for ramie production. On the one hand, it can be recycled to save water, and on the other hand, it can also reduce the discharge of pollutants.

Images