Biological carrier for treating sewage and application thereof

Abstract

The invention relates to a biological carrier for treating sewage and an application of the biological carrier. The biological carrier is characterized by being prepared from the following materials in percentage by mass: 80-85% of regenerated plastic grains as the main ingredient as well as 6-10% of zinc oxide, 2-3% of polyving alcohol and 4-7% of glycerinum as the auxiliary materials. Isolating walls and guide plates are additionally arranged in a biochemical pool of a sewage treatment plant, an original large pool is divided into a plurality of small pools, stopping nets are additionally arranged in the small pools, the biological carrier is fed according to the ratio of 25-35% to the volume of the stopping nets, and corresponding equipment is additionally arranged inside the pools, so that the biological carrier is in the fluidization state in the sewage in the pools, and the biological loading quantity is 40g / L; and as the equipment is solidly combined with the biological carrier, the biologic carrier has small possibility of dropping off, the service life is more than 20 years, and the biologic carrier is good in elimination effect on various pollutants, particularly when being used for eliminating ammonia nitrogen.

Description

technical field [0001] The invention belongs to the technical field of sewage prevention and control, and in particular relates to a biological carrier for sewage treatment and its application. Background technique [0002] Domestic pollution is the main discharge source of ammonia nitrogen, and urban sewage treatment is the main means to reduce ammonia nitrogen, which will become the most important field of ammonia nitrogen emission reduction. At present, my country's water environment is seriously polluted, and permanganate index, five-day biochemical oxygen demand and ammonia nitrogen are still the main pollution indicators. Sewage treatment facilities cannot meet the requirements of ammonia nitrogen emission reduction. Some sewage treatment plants built in the early stage only considered the removal of chemical oxygen demand at the beginning of construction, and did not have nitrification function. The ammonia nitrogen control technology generally includes adding biologi...

AI Technical Summary

Problems solved by technology

Sewage treatment facilities cannot meet the requirements of ammonia nitrogen emission reduction. Some sewage treatment plants built in the early stage only considered the removal of chemical oxygen demand at the beginning of construction, and did not have nitrification function. The ammonia nitrogen control technology generally includes adding biological fillers in the reaction tank to improve The biomass in the reaction tank or the addition of biological aerated filter after the sedimentation tank has high ammonia nitrogen in the effluent. How to upgrade these sewage treatment plants to remove ammonia nitrogen and exert the efficiency of ammonia nitrogen emission reduction is an urgent problem to be solved.