Cassava alcohol wastewater whole mash anaerobic high temperature fermentation tank water distribution system

Abstract

The invention discloses a cassava alcohol waste water mash anaerobic high-temperature fermentation cylinder water distributing system, which comprises an umbrella-shaped water separator arranged at bottom of a fermentation cylinder, the umbrella-shaped water separator is connected to a vertically arranged water distributor, the water distributor comprise two layers, an outer layer water distributor is characterized in that the 316L stainless steel external layer water distributor is employed on the liquid surface of the fermentation cylinder, a carbon steel seamless steel pipe is employed below the liquid surface, natural water seal is formed between the outer layer and the inner layer by using mash, so that biogas leakage can be avoided; the inner layer water distributing is connected to a water distribution device arranged outside the fermentation cylinder through a flange, the water distribution device enables deposition and interception of partial mud and sand, so that wearing on the water distributors can be mitigated; the water distribution device comprises a deversoir, a sand settling bucket is connected to the lower part of deversoir, an inlet pipe communicated to the sand settling bucket is arranged on the side wall of the sand settling bucket; a sand discharged pipe communicated to the sand settling bucket is arranged at bottom of the sand settling bucket; and a horizontally arranged stabilier is arranged in the sand settling bucket.

Description

technical field [0001] The invention relates to a water distribution system for an anaerobic high-temperature full-mash fermenter used for cassava alcohol waste mash. technical background [0002] At present, my country's alcohol fermentation mainly uses corn, rice, and wheat as raw materials. However, due to food security issues, the country clearly proposes to use non-grain raw materials as the main raw materials for the development of alcohol production. As a non-grain crop, cassava has high starch content and the planting area Wide, large yield, drought-resistant, more economical as raw materials, can obtain good economic benefits. The production of alcohol from cassava will produce a large amount of waste mash, which mainly contains residual starch, protein, sugar, sediment, cellulose, various inorganic salts, etc. CCOD Cr It can reach 35,000-80,000 mg / L, and SS can reach 35,000-50,000 mg / L. It is a kind of organic wastewater with high concentration, high temperature, h...

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Problems solved by technology

[0003] Most of the traditional anaerobic fermentation tank water distribution system adopts perforated pipe water distribution or multi-point water distribution, which is installed at the bottom of the fermentation tank. However, due to the large amount of sediment, cassava skin and particles in the mash, the water distribution system is severely worn and corroded. It is easy to block, and the water distribution system will be paralyzed in a short time, resulting in uneven water distribution and a decrease in treatment efficiency. It is necessary to stop production and clear the tank before maintenance

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