4results about How to "Efficient removal effect" patented technology

The utility model provides a circulating oxygen control enhanced biochemical sewage treatment system. The circulating type oxygen control enhanced biochemical sewage treatment system comprises a pool body, a mixing area, a screening area, an enhanced biochemical area, a selection area, a circulating area, a mud-water separation area and a backflow area are sequentially arranged in the pool body in a communicating mode, and a sewage inlet is formed in the mixing area. The screening area, the enhanced biochemical area and the selection area are respectively provided with an aeration device and a dissolved oxygen meter to control the dissolved oxygen concentration, the circulation area is provided with an air lifting and pushing device, the sludge-water separation area is provided with a filler layer, a water outlet and a sludge outlet, the sludge outlet is communicated with the backflow area, and the backflow area is communicated with the mixing area to enable at least part of sludge to flow back to the mixing area. The system disclosed by the utility model can be used for removing different pollutants in the same pool body and in the same microbial environment, and has the advantages of shortening the treatment flow, improving the treatment effect, saving the operation cost and the like.

The utility model discloses an RTO (Regenerative Thermal Oxidation) type combustion device based on efficient removal of VOCs (Volatile Organic Compounds) and NOx, which belongs to the field of environmental protection and comprises an amino reducing agent nozzle, a fuel gas nozzle and an RTO type reaction device body, and the RTO type reaction device body is sequentially divided into a purging chamber, a flow guide chamber, a heat exchange chamber and a combustion chamber from bottom to top; the amino reducing agent nozzle and the fuel gas nozzle are sequentially installed on the side wall or the top of the same side of the combustion chamber from top to bottom. And the heat exchange chamber is filled with a heat accumulator. According to the utility model, VOCs thermal oxidation and NOx reduction reaction are integrated in the same RTO device, and synchronous treatment of two pollutants is realized by spraying ammonia in a combustion area, so that the problems of complex system design and high energy consumption of the traditional tandem process are avoided, and meanwhile, the equipment investment and the occupied area of the equipment are reduced.

The invention relates to the technical field of sewage treatment, in particular to an air flotation device with efficient removal capacity. According to the technical scheme, an auxiliary output matching seat is arranged in a pressurized dissolved air outlet conveying pipeline, the auxiliary output matching seat comprises a cylindrical main body matching mounting seat, and an all-through cylindrical main body conveying matching hole is formed in the central axis position of the main body matching mounting seat; the upper end of the main body conveying matching hole is provided with two arc-shaped reinforcing and limiting matching plates which are symmetrically distributed, and the upper ends of the reinforcing and limiting matching plates and the upper end face of the main body matching mounting base are located on the same plane; and a filter screen mounting limiting plate is arranged at the position, between the two reinforcing limiting matching plates, in the main body conveying matching hole. The device has the advantages that gas at the gas outlet position can be buffered and matched, the stability during gas outlet is better, the adhesion effect with impurities in sewage during later use is better, and the more efficient removal effect is achieved.

The invention relates to the technical field of oil field drilling waste treatment, in particular to a water-based drilling pressure filtrate deep purification method which comprises the following steps: feeding water-based drilling pressure filtrate into a fixed bed reactor for destabilization enzymolysis; the added immobilized compound enzyme is prepared by adsorbing a compound enzyme preparation onto a porous solid-phase carrier and incubating in a tetraethyl orthosilicate solution; feeding into a coalescence reactor for decoloration, hardness removal and filtration; the added modified adsorption coalescence agent is obtained by carrying out shake culture on carboxymethyl chitosan in a microbial liquid; and finally, feeding into an electrochemical bioreactor for decoloration and hardness removal so as to realize recycling and pulp preparation. The added microbial activator is prepared by compounding a carbon source, a nitrogen source, a phosphorus source and molasses fermentation liquor. The method provided by the invention solves the problems of high purification difficulty of the press filtrate and low recycling rate of the press filtrate caused by the gel breaker.