Abstract: The present disclosure provides an ultrasonic imaging method and apparatus. The apparatus includes an ultrasonic signal emission source and a receiving array including ultrasonic signal receiving circuits; the method includes: turning on the source to perform emission of ultrasonic waves toward an object to be detected and causing the ultrasonic waves to propagate through the object, a depth-wise direction of which is along a propagation direction of the ultrasonic waves; after a first predetermined time period having elapsed since the source was turned on, turning on the receiving array to receive reflected echoes returning from a first section plane of the object to be detected perpendicular to the depth-wise direction; thereafter, turning off the receiving array, storing the reflected echoes by the ultrasonic signal receiving circuits and acquiring reflected echo signals, and successively reading the reflected echo signals from the ultrasonic signal receiving circuits during a reading time period.

Abstract: The invention relates to an electrobiological treatment device for organic sewage, comprising a shell, a biological filler and one or more pairs of electrodes, wherein the biological filler and the electrodes are placed in the shell. The space inside the shell is separated into an outlet chamber, a reaction chamber and an inlet chamber by an upper distribution board and a lower distribution board, the reaction chamber positioned in the middle part in which the biological filter and the electrodes are placed. This device combines electrolysis treatment process with biological treatment process to exert oxidation reduction function of electrolysis treatment, improve conditions of biological treatment, increase treatment capability and get good effects.

Abstract: The invention relates to a water circulation treatment system in housing estate comprising an oxidative biologic filter chamber, a sloping plate sedimentation chamber, an electric biology organic sewage processor and a carbon absorption chamber, said oxidative biologic filter chamber, said sloping plate sedimentation chamber, said electric biology organic sewage processor and said carbon absorption chamber are connected in sequence, wherein the electric biology organic sewage processor includes a shell and a plurality pairs of electrodes, the plurality pairs of electrodes placed in the shell of the electric biology organic sewage processor and surrounded by filter materials, the extending directions of the electrodes are perpendicular to that of water flow in the shell of the electric biology organic sewage processor. This system can purify discharged water which meet sewage discharged standards to a high degree of purification to be used as drinking water.

Abstract: This invention relates to a photocatalysed oxidation purification device, comprising middle part, upper part and lower part which are divided by two transverse clapboards, wherein the upper clapboard is micropore plate and the lower clapboard is macropore plate, the middle part of said device is a fluidized bed chamber, the lower part of said device is a mixing chamber and the upper part of said device is a current regulating chamber, several ultraviolet lamps are placed in the said fluidized bed chamber with particles photocatalyst inside, the inlet pipe of said device is connected to the said mixing chamber and its running direction is oblique or tangential, the outlet pipe of said device is connected to the current regulating chamber and its running direction is radial. There is also an ozonizer on the device. This device possesses a higher purifying degree, a larger processing capacity and a relatively lower processing cost, which is suitable for locations requiring higher purified water.

Abstract: This invention relates a wastewater purifying system in hospitals, comprising interconnected grilles, a regulating disinfection pool, a coagulation pool, a preliminary settling tank, a hydrolysis-acidification pool, an aerobic bio-filter, a secondary settling tank, an advanced oxidation device, a sludge pool and a recycling impounding reservoir. The regulating disinfection pool is used to accumulate original wastewater released from every source and the advanced oxidation device is used to oxidize remained organic matters into inorganic molecules via chemical and biochemical methods or via physical methods and could be an electric biological oxidation treatment device. This system possesses high purifying degree and purified water from this system can be used as reclaimed water.