Biological sewage treatment equipment and process of internal recycle suspension padding

Abstract

The invention discloses biological sewage treatment equipment and a process of internal recycle suspension padding, which utilize an aeration generator to enable the suspension padding and the sewage to circularly flow in a reactor, and simultaneously an aerobic reaction area and an anoxia reaction area are formed in the reactor, thereby improving the growth and degradation capability of a biological film on the suspension padding, and having large volume loading and high process efficiency; and by the circularly flow of the sewage and the padding in the aerobic reaction area and the anoxia reaction area, the device and the method degrade or convert the organic matters, nitrogen and the like in the sewage fully, thereby achieving the aim of quickly purifying water quality. The integral structure of the device develops towards space longitudinally, has small occupied area, and simple and convenient mounting, and can be widely applied to the retexture of the sewage.

Description

technical field [0001] The invention relates to the theory, method and technology of sewage treatment and recycling, in particular to a sewage biological treatment device and process for direct treatment of sewage with internal circulation suspended filler. Background technique [0002] (1) Necessity and feasibility of recycling sewage [0003] With the increase of population and the rapid development of economy, the serious shortage of water resources in my country has become an important restrictive factor for the development of national economy and the improvement of people's living standards. In order to alleviate the current situation of water shortage, in addition to opening up new water sources (such as South-to-North Water Diversion, seawater desalination, etc.) and emphasizing water conservation, it is also crucial to accelerate the process of sewage resource utilization and actively promote the reuse of reclaimed water. As early as 1987, the Beijing Municipal Gove...

AI Technical Summary

Problems solved by technology

However, the traditional BAF process has high requirements for pretreatment. Generally, high-efficiency sedimentation tanks, flocculation sedimentation tanks, or air flotation are used for pretreatment to ensure that the SS and BOD indicators of the subsequent BAF influent cannot be too high (general requirements SS≤ 60mg / L), otherwise it will affect the BAF treatment effect and greatly shorten the backwash cycle

In addition, the head loss of BAF is relatively large (generally 3-4m), and the water consumption of backwashing is large. It is necessary to set up a large-volume backwashing wastewater storage tank, and the equipment will stop running when the filter material is backwashed.

Images