An enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water sources

Abstract

The invention discloses an intensified flocculation-aerobic nitrification treatment system aiming at a low-ammonia nitrogen water source. The system comprises a flocculation basin, wherein a water inlet and a water outlet are formed in the flocculation basin; an aeration head is arranged on the bottom surface of the flocculation basin; the density of the aeration head is gradually reduced along the water flow direction; a carbon source adding device is arranged at the water inlet of the flocculation basin. The system also comprises a settling pond communicated with the flocculation basin, as well as a mud-storage basin, a sludge discharging pipeline and a sludge return pipeline, wherein the inlet of the mud-storage basin is communicated with the settling pond, and the outlet of the mud-storage basin is respectively communicated with the sludge return pipeline and the sludge discharging pipeline; and the sludge return pipeline is communicated with the flocculation basin. The intensified flocculation-aerobic nitrification treatment system disclosed by the invention has the beneficial effects that the aeration head is arranged at the bottom of the flocculation basin, so that the occupied area is reduced, and the investment cost is saved; aeration is performed when the flocculation reaction is carried out, a flocculating agent, sewage and sludge are fully mixed with one another when oxygen is supplied, the density of the aeration head is reduced in the water flow direction, the flocculating constituent formed at the initial stage is prevented from being broken, the flocculating effect is good, and the ammonia nitrogen can be efficiently removed.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water sources. Background technique [0002] In recent years, with the increasing urban population and the continuous development of industry and agriculture, water pollution accidents have occurred frequently. Many lakes and reservoirs have become eutrophic due to the discharge of nitrogen and phosphorus, which seriously threatens human production and ecological balance. . Not only that, the deterioration of the water source has led to the deteriorating quality of the influent water of the water purification plant, and people's requirements for tap water are increasing. Therefore, it is more and more urgent to improve the water purification process of the water purification plant in an efficient and reasonable way. [0003] At present, the treatment method for removing nitr...

AI Technical Summary

Problems solved by technology

However, according to the traditional process of existing waterworks: flocculation, sedimentation, filtration, and disinfection, there is basically no ability to remove low ammonia nitrogen in the influent, and the traditional grid flocculation tank has the disadvantages of dead angle and low flocculation effect

In addition, considering the limitations of water plant investment and construction and land occupation, it is obviously not economically reasonable to build a new biochemical system for the removal of low-concentration ammonia nitrogen in raw water, and it will also bring troubles in management.

Images