Biological rotating disc process operation method for disposing waste water in villages and towns

Abstract

The invention discloses a biological rotating disc process operation method for disposing waste water in villages and towns. The operation method comprises a phased launch biofilm-culturing stage, a normal operation stage, an alternate intermittent operation stage and an operation suspension stage. Biological rotating discs which are in parallel connection are subjected to the alternate operation of the four stages in batches according to water inflow and water inlet load, the cultured biofilm thickness and homogeneity of the biological rotating discs are adjusted in a periodical mode, and the biofilm updating efficiency is improved. According to the operation method, the alternate operation of the biological rotating discs and water inlet load control can be utilized, and under the condition of satisfying water outlet of the biological rotating discs, it can be guaranteed that the biological rotating discs run durably and stably.

Description

technical field [0001] The invention relates to the field of biochemical treatment of township sewage, in particular to a biological turntable process operation method for treating township sewage. Background technique [0002] As a kind of biofilm method, the biological turntable has the characteristics of large biomass, low energy consumption, small sludge output and strong impact load resistance. However, my country's township sewage treatment generally has the characteristics of small treatment volume, low influent concentration, and uneven distribution of water quality and water volume. Considering that investment costs and operation management meet the current needs of township sewage treatment, the biological turntable process is often used in small-scale sewage treatment. Parallel rather than hierarchical series. Due to the uneven water quality and quantity in townships, the influent load is sometimes high and sometimes low, and the operation of sewage treatment in t...

AI Technical Summary

Problems solved by technology

However, my country's township sewage treatment generally has the characteristics of small treatment volume, low influent concentration, and uneven distribution of water quality and water volume. Considering that investment costs and operation management meet the current needs of township sewage treatment, the biological turntable process is often used in small-scale sewage treatment. Parallel instead of hierarchical series

Due to the uneven water quality and quantity in townships, the influent load is sometimes high and sometimes low, and the operation of sewage treatment in townships is limited by the technical level of operators, it is impossible to adjust the operating status of the biological turntable according to the situation of film formation, and the rotation speed of the biological turntable is often maintained at a constant speed , unable to adjust the speed in time

In this case, the film will be too thick, the film will be uneven, and the biofilm will be anaerobic, which will affect the operation of the biological turntable, resulting in problems such as poor treatment effect and heavy turntable.