5results about How to "Increase denitrification rate" patented technology

The invention discloses a method for promoting anaerobic denitrification by electroactive bacteria. According to the method, electroactive bacteria and denitrifying bacteria are co-cultured in an anaerobic denitrification system to promote denitrification. The method for promoting anaerobic denitrification by using the electroactive bacteria has the characteristics of increasing the denitrification rate, reducing the accumulation of nitrite and nitrous oxide, reducing the denitrification cost and avoiding secondary pollution, and has important application prospects in the fields of sewage denitrification and polluted sediment remediation.

The present invention discloses a functional zoning coupled gas lift stirring high-efficiency anaerobic biological treatment device and method, belonging to the field of biological devices for treating organic wastewater. The device is composed of a denitrification functional zone, a sulfur reduction functional zone and a three-phase separation zone, which are interconnected from bottom to top. The middle of the denitrification functional zone is a second reaction chamber inoculated with denitrification sludge, and the middle of the sulfur reduction functional zone is a first reaction chamber inoculated with anaerobic sludge, and an air lift coupling stirring device is arranged in the first reaction chamber. An air distributor is arranged at the bottom of the sulfur reduction functional zone, and the air distributor is connected to the air outlet end of the air inlet pipe, and the air outlet end of the air inlet pipe is connected to the second reaction chamber. An air collecting device is arranged inside the three-phase separation zone, and a guide plate for separating sludge is arranged at the bottom thereof. The device integrates the removal of carbon, nitrogen and sulfur through functional zoning; gas lift coupling stirring is achieved through self-production of gas by the device; the overall device has a compact structure and occupies a small area, and is suitable for coal chemical wastewater treatment.

The utility model relates to sewage treatment technical field, concretely is a sewage treatment integrated intelligent circulation system, including ground, the ground top is fixed with anaerobic tank, the anaerobic tank right -hand member is fixed with oxygen -deficient pool, the oxygen -deficient pool right -hand member is equipped with the aerobic tank, the aerobic tank right -hand member is equipped with the electric catalysis advanced oxidation ware, the anaerobic tank the oxygen -deficient pool the aerobic tank with the electric catalysis advanced oxidation ware right -hand member all are equipped with the filter box, each the filter box right -hand member is fixed with the delivery pipe, the anaerobic tank the oxygen -deficient pool with the aerobic tank top all are equipped with the sealing plate, the anaerobic tank the oxygen -deficient pool with the aerobic tank inside all are equipped with stirring and sensor network, the utility model discloses through the synergies of multistage biochemical treatment and electric catalysis advanced oxidation, has improved the removal efficiency of each kind of pollutant in hospital sewage greatly, and the system avoids the disinfection by -product produced by chemical disinfection method, reduces the secondary pollution to the environment.

The utility model relates to rural domestic sewage treatment technical field provides a sewage treatment combined pool, and the denitrogenization phosphorus removal effect of sewage treatment facilities to rural domestic sewage is relatively poor, and the effluent quality is poor, and the problem of high energy consumption of facility operation, including first anoxic tank, anaerobic tank, aerobic tank, oxygen consumption pool, second anoxic tank, air flotation tank, artificial wetland ecological pond, the first anoxic tank and anaerobic tank all are equipped with inlet pipe, be equipped with reflux pipe in oxygen consumption pool, the reflux pipe one end links with first anoxic tank, the artificial wetland ecological pond includes primary filler area and secondary filler area, and is equipped with clearance area between primary filler area and secondary filler area, the air flotation tank includes air flotation area and effluent area, is separated with baffle between air flotation area and effluent area, is equipped with air flotation device in air flotation area.

The application discloses a method for relieving the inhibition of carbon dioxide on denitrification and promoting denitrification. The method comprises the following steps: inputting 0.3%-20% of CO2 into a closed reactor, inoculating Proteiniphilum aceticum into a denitrification system of P.denitrificans, and realizing the effect of relieving the inhibition of CO2 on denitrification and promoting the denitrification efficiency through the interaction of the two bacteria, wherein the inoculation ratio of P.denitrificans and Proteiniphilum is 1:2-1:15, the carbon-nitrogen ratio of the denitrification system is 1-5, the pH of the denitrification system is 6.0-9.0, and the temperature of the denitrification culture is 30-37 DEG C. The application promotes anaerobic denitrification by using the interaction of Proteiniphilum and P.denitrificans, has low cost, has no secondary pollution, can obviously relieve the inhibition of CO2, improves the nitrate removal effect, and reduces the accumulation of nitrite and nitrous oxide.