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3365results about "Non-contaminated water treatment" patented technology

Preparation method of load type metal compound catalyst used for water treatment

The invention relates to a preparation method of a load type metal compound catalyst used for water treatment, in particular to a catalyst comprising a metal oxide and metal salt. The method comprises the following steps: a porous inorganic material carrier, metal salt, a dispersant, a stabilizing agent and a accelerant which are treated are added into an organic solvent and stirred to form a load type catalyst before-preparation body mixture, the load type catalyst before-preparation body mixture stands for 1 to 9 days under a sealed condition until the load of the catalyst is completed, a steady load type catalyst before-preparation body is prepared, put in a baking oven for baking, moved into a muffle furnace and heated to 300 DEG C to 600 DEG C under air atmosphere at the speed of 2 DEG C/min to 6 DEG C/min, the temperature is kept for 1 to 8 hours, and finally, the load type metal compound catalyst used for water treatment, which forms a fixed catalyst layer with the layer thickness of 15nm to 28mum on the surface of the carrier, is prepared. The method has lower cost, little loss of raw materials in the preparation technology process and simple preparation technology, and is suitable for industrial mass production.
Owner:内蒙古海驰创新中心有限公司

Circulation type water purifier

There is provided a circulation type water purifier which maximally prevents production of bacteria and microbes by periodically circulating water in the water purifier, and improves lifetime and power saving of a pump by varying the number of circulation times depending on an amount of water used. The circulation type water purifier includes a clean water filter; a storage tank in which water purified through the clean water filter is stored; a cold/hot water supply tank cooling and heating the water supplied from the storage tank to drain the cooled and heated water to respective drain outlets; a drain pipe 351 connected to the cold/hot water supply tank to drain the water in the cold/hot water supply tank when cleansing the interior of the cold/hot water supply tank; a pump 400 periodically circulating water at every circulation time under a control of a microcomputer; a circulation pipe connecting the clean water filter, the cold/hot water supply tank, the drain pipe and the pump, the circulation pipe including a first circulation pipe connecting the clean water filter and the storage tank, a first auxiliary circulation pipe connecting the storage tank and the cold/hot water supply tank, a second circulation pipe connecting the storage tank and the clean water filter, and a second auxiliary circulation pipe connecting the cold/hot water supply tank and the second circulation pipe! and a sterilizer installed to the circulation pipe to sterilize water flowed into the circulation pipe.
Owner:APPL TECH CORP

Method and apparatus for electrodeionization of water

An electrodeionization apparatus has an anolyte compartment 17 having an anode 11, a catholyte compartment 18 having a cathode 12, concentrating compartments 15, and desalting compartments 16. The concentrating compartments 15 and the desalting compartments 16 are alternately formed between the anolyte compartment 17 and the catholyte compartment 18 by alternately arranging a plurality of anion-exchange membranes 13 and a plurality of cation-exchange membranes 14. The desalting compartments 16 are filled with ion-exchanger and the concentrating compartments 15 are filled with ion-exchanger, activated carbon, or electric conductor. Electrode water flows into the anolyte compartment 17 and the catholyte compartment 18. Concentrated water is introduced into the concentrating compartments 15. Raw water is fed into the desalting compartment 16 to produce the deionized water from the desalting compartment 16. Water containing silica or boron at a lower concentration than the raw water is introduced into the concentrating compartments 15 as the concentrated water in a direction from a side near an outlet for the deionized water toward a side near an inlet for the raw water of the desalting compartments 16. At least a part of concentrated water flowing out of the concentrating compartments 15 is discharged out of a circulatory system.
Owner:KURITA WATER INDUSTRIES LTD
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