4results about How to "Reduce backwash frequency" patented technology

The utility model belongs to water treatment technical field, specifically discloses a perforated folded plate for sedimentation tank and the sedimentation tank of oblique installation perforated folded plate. The perforated folded plate is the plate -like structure of undulating extension and includes at least three folded plate tops of undulating top end and three folded plate bottoms of undulating bottom end, and the folded plate top of perforated folded plate is adjacent to the folded plate bottom and is provided with a plurality of folded plate holes on or close to the folded plate top. The water inlet and the water outlet of the sedimentation tank are separately arranged in the lower part and the upper part of the pool body, a folded plate support is fixed above the water inlet in the pool body, a plurality of aforementioned perforated folded plates are obliquely arranged on the folded plate support in the pool body, the folded plate top of the perforated folded plate faces upwards and the folded plate bottom faces downwards. The perforated folded plate top of the utility model is provided with the folded plate hole, and the sewage can flow upwards through the folded plate hole, which not only can increase the sedimentation area, but also can realize automatic sludge discharge, has the characteristics of simple structure, wide application range, high sedimentation efficiency and automatic sludge discharge.

The utility model discloses a kind of waste recovery devices for lens processing, it is related to waste recovery technical field, including jar body, the water inlet pipe is connected in the side top end of jar body, the inside top end fixedly connected with inner tube of jar body, the water outlet pipe that penetrates jar body is connected in the side of inner tube, the filter core is fixedly connected in the inside of inner tube, the liquid inlet that is communicated with filter core inner cavity is equipped in the bottom end of inner tube, filter screen is fixedly connected in the liquid inlet place;Spiral fairlead is fixedly connected in the outside of inner tube, multiple side baffles are vertically fixedly connected along the circumferential direction of the inner wall of jar body, the bottom end of jar body is equipped with deslag pipe.This waste recovery device for lens processing can gradually recover glass waste in wastewater from big to small, with small floor area, high recovery processing efficiency.

This invention discloses a method for treating highly hydrochloric acid wastewater from the rare earth industry by recycling hydrochloric acid, belonging to the field of rare earth metallurgical wastewater treatment and resource recovery technology. The method includes the following steps: first, homogenizing the wastewater, followed by primary membrane filtration to remove the extractant and secondary membrane filtration to remove impurities; then, tertiary membrane forced circulation for extractant-water separation; and finally, deep purification through ion exchange to complete the treatment. This invention provides a method for treating highly hydrochloric acid wastewater from the rare earth industry by recycling hydrochloric acid. This method has strong acid resistance and adaptability, requires no reagent adjustment, achieves thorough extractant and impurity removal, has a high resource recycling rate, achieves zero discharge, has strong process stability, good shock resistance, and high industrial adaptability, enabling large-scale industrial application. It solves the problems of high reagent consumption, incomplete hydrochloric acid recovery, easy membrane and resin fouling, waste of extractant resources, and easy secondary pollution in existing treatments of highly hydrochloric acid wastewater from the rare earth industry.

The utility model discloses a membrane separation and adsorption combined advanced treatment technology device aiming at electrophoresis wastewater, which comprises a working bottom plate, a water purification cylinder is fixedly connected to one side of the working bottom plate, and a drainage pipe is arranged on one side of the water purification cylinder; one side of the precipitation assembly is fixedly connected with the top of the working bottom plate, and the precipitation assembly is used for precipitating large-particle impurities in the electrophoresis wastewater; the bottom of the purification assembly is fixedly connected with the two sides of the inner wall of the water purification cylinder, and the purification assembly is used for carrying out purification treatment on the precipitated electrophoresis wastewater. According to the membrane separation and adsorption combined advanced treatment technology device for electrophoresis wastewater, the purification assembly is arranged, two purification plates with different heights are adopted, identification and replacement are convenient, and a subsequent water pump is matched, so that the membrane separation and adsorption combined advanced treatment technology device is a low-energy-consumption process form for driving membrane filtration through liquid level difference.