52results about How to "Improve the efficiency of biochemical reactions" patented technology

The invention discloses a membrane bioreactor and an application method thereof in wastewater treatment. The membrane bioreactor comprises a biochemical reaction unit which adopts a particle biofilm medium, a pulse type air supply unit and a membrane filtering unit, wherein, a pulse airflow transforms wastewater entering the membrane filtering unit into pulse aerated flow, the particle biofilm medium in the wastewater is fluidized and rubbed and scraped with a membrane component, and fouling sedimentary on the membrane surface is removed. The membrane bioreactor and the application method have the advantages that the biochemical treatment of the particle biofilm medium has good effect, and the effect of rubbing and cleaning the membrane component is good; combined with the disturbing strengthening cleaning effect of the pulse aerated flow, synergistic effect is played, thus improving the membrane pollution preventing effect of an MBR unit, reducing the running cost of the unit, and being applicable to various wastewater treatment occasions.

A processing method for produced water for ultra-low permeable oil field reinjection relates to a waste water processing method which solves the problems of complex operation, high cost, solid contentsuspended in effluent quality and incapability of medium particle size for achieving the 5, 1, 1 standard of produced water of the ultra-low permeable oil field existing in the existing method for processing oil field produced water. The processing method comprises the following steps: 1. preparing a supernatant; 2. carrying out acclimatization treatment in an activated sludge-biomembrane reaction tank, and then introducing the supernatant; and 3. after precipitation, carrying out hyperfiltration. The processing method adopts an activated sludge-biomembrane compound technology as a reactive agent, can give consideration to long-and-short sludge age, aerobic / anaerobic / anoxic environments, simultaneously removes nutritive materials and hard-degradable organic material in water and has highbiochemical reaction efficiency; the processing method has simple operation and low cost; after the processing method of the invention is adopted, effluence can stably achieve the water quality standard-the 5, 1, 1 standard of produced water of the ultra-low permeable oil field.

The invention relates to a domestic sewage treatment device for a ship. An aeration chamber, a precipitation chamber and a membrane chamber are formed in the body of the device respectively; the membrane chamber is a flat cube and is positioned on one side of the body; the aeration chamber and the precipitation chamber form a box type cube which is positioned on the other side of the body; a clapboard of which a half is isolated is arranged in the aeration chamber; the bottom of the precipitation chamber is funnel-shaped, and the top of the precipitation chamber is trumpet-shaped; and a water outlet cavity on the upper part of the precipitation chamber is positioned at the central position of the box type cube. Due to the design of the clapboard in the aeration chamber, a plug flow movement locus is formed while sewage is aerated by using an aerator at the bottom of the aeration chamber, so that higher biochemical reaction efficiency is realized for sewage; and by improving the structure of the precipitation chamber, the chemical oxygen demand (COD), biochemical oxygen demand after 5 days (BOD5) and total suspension solid (TSS) value can be lowered effectively. By improving the water outlet cavity of the precipitation chamber, a liquid in the precipitation chamber can keep in stable state no matter which direction the device is inclined in, and the stability of the device is further enhanced.