54results about How to "High removal load" patented technology

The invention discloses a method for forcibly removing nitrogen and phosphorus from a sewage plant by means of in-situ enrichment of nitrifying bacteria coupled with sludge hydrolysis, and belongs to the field of sewage treatment. Specific to the defects of the conventional mainstream nitrogen and phosphorus removing process, two independent serial or parallel reaction tanks namely, an S-NDN tank and an S-HY tank, are arranged on a sludge return line; sludge returning from a sludge return pump room is shunted into the S-NDN tank and the S-HY tank respectively; the other part of return sludge directly returns into a main biological tank; a nitrogen-rich supernatant generated on a sludge treatment segment of the sewage plant is introduced into the S-NDN tank for serving as a nitrogen source for use in a nitration process, and is applied to in-situ enrichment culture of the nitrifying bacteria; active sludge in the S-HY tank undergoes anaerobic hydrolysis and generates soluble chemical oxygen demand (SCOD); and a mud-water mixed solution which is subjected to the biochemical process in the two reaction tanks returns into a main biological tank respectively. By adopting the method, the nitrogen and phosphorus removing efficiencies can be increased remarkably, and sludge reduction can be realized.

The invention discloses a process for treating epoxy resin production wastewater. The process comprises: removing oils, suspended particle organic matters, a part of high polymers and toluene in high-salinity wastewater through a cavitation air flotation system, transforming macromolecular organic matters in the wastewater into micromolecular organic matters through an iron-carbon micro-electrolysis reactor, then, oxidizing non-biodegradable and non-chemical oxidable organic matters in the wastewater through a catalytic oxidation reactor under the action of an Fenton reagent, carrying out anaerobic biochemical treatment to reduce the chemical oxygen demand and the biochemical oxygen demand in the wastewater, carrying out aerobic biochemical treatment to anaerobically degrade a part of aerobic organic matters incapable of being degraded by aerobiont into biochemically degradable organic matters, finally, conveying the wastewater into a clean-water reservoir, filtering the wastewater through a multi-medium filter, and discharging the wastewater after meeting the standard. The process disclosed by the invention has the advantages of small energy consumption, high removal load and capability of recycling biogas as an energy source, and the purified water quality meets the emission standard so as to protect the ecological environment.

The invention discloses a method for producing microorganisms for processing ammonia-containing wastewater. Inoculums are put into a bioreactor for carrying out three-level amplification culture step by step, wherein the inoculums are microorganisms for processing the ammonia-containing wastewater and having strong endurance capacity; the first-level culture adopts a way of supplementing ammoniumsalts in batch, the second-level culture and the third-level culture adopt ways of alternately supplementing materials in batch and changing water in batch; and the microorganisms are collected afterthe three-level amplification to be used for a high ammonia-nitrogen containing wastewater processing system or storage for later use. The method has the advantages of high culture efficiency, large production quantity and the like, and is suitable for largely and commercially producing the microorganisms for processing the ammonia-containing wastewater. The microorganisms can effectively processlow-COD and high ammonia-nitrogen containing wastewater, such as catalyst production wastewater and the like.

The invention discloses a vertical flow artificial wetland. The vertical flow artificial wetland comprises a first-stage vertical flow artificial wetland pond, a second-stage vertical flow artificial wetland pond and a third-stage vertical flow artificial wetland pond which are sequentially connected in series, wherein aerator pipes are arranged in the first-stage vertical flow artificial wetland pond and the third-stage vertical flow artificial wetland pond, filling layers are arranged above the aerator pipes, soil layers are arranged on the filling layers, and aquatic plants are planted on the soil layers; and the aerator pipe is not arranged in the second-stage vertical flow artificial wetland pond, the other inner structure of the second-stage vertical flow artificial wetland pond is same as that of the first-stage vertical flow artificial wetland pond, and a second water inlet pipe is arranged above the second-stage vertical flow artificial wetland. The invention further provides a method for treating nitrogen, phosphorus and tetracyclines in sewage by virtue of the vertical flow artificial wetland. By virtue of the purification capacity of a middle and rear segment of the vertical flow artificial wetland, the removal load is increased, and the occupied area is reduced; and the effluent index of the vertical flow artificial wetland is increased by virtue of aeration, so that the effluent reaches the standards, and a simple and feasible method for the small-scale sewage treatment is provided.