CN1103628A - Drinking water purifying technique with compound permanganate medicament - Google Patents

Abstract

By the present invented water purifying technique, organic and inorganic pollutant and mutating material in water can be eliminated to achieve transformation of mutating activity from positive to negative. The secondary by-product of chloride disinfection can effectively be controlled and water quality of waterworks is obviously improved. The said technique is esp suitable for waterworks with polluted water source.

Description

Drinking water purifying technique with compound permanganate medicament belongs to water supplying purifying technique.

Surface water and underground water have been subjected to trade effluent as the important water source of tap water, sanitary sewage and farmland irrigating water's pollution, and also pollution is on the rise.According to reports, the U.S. has detected more than 700 kind of micro quantity organic pollutant altogether from Drinking Water, and the research of China recent years shows that also a lot of drinking water sources are subjected to organic severe contamination.Having in the micro quantity organic pollutant in the water much is very big carcinogenic of hazardness, teratogenesis, mutagenic matter, these micro quantity organic pollutants in the contaminated water source, with traditional conventional handling technology of water supply flow processing, clearance is very low, causes various micro quantity organic pollutants to enter in the tap water, in addition, in the cholorination process, organism also can generate chlorinated secondary product--the halogenated organic matters that human body is had potential hazard with the chlorine reaction.

How removing the organic pollutant in the tap water, is a domestic and international question of common concern, and some developed countries in the west have adopted feedwater advanced treatment technology such as ozone-active carbon coupling at present.But in China owing to reasons such as economic condition still are difficult to apply.Therefore, the organic pollutant of removing cost-effectively in the tap water is a very urgent research topic.

The characteristics of drinking water purifying technique with compound permanganate medicament are the organic pollutants that can remove economic, effectively in the water.Toxicological test shows, adopt this technical finesse after, the mutagenesis activity of filter back water reduces significantly, transfers feminine gender to by the positive; Simultaneously, adopt this technology can remove the precursor of cholorination by product effectively, the by product that produces in the control cholorination process has improved effluent water quality, makes that the mutagenesis activity of water also reduces significantly behind the cholorination.

Ultimate principle of the present invention is in the handling technology of water supply flow process, with compound adding in water to be clean such as a spot of permanganate composite chemical and coagulating agent, make it with water in organic pollutant effect for some time, thereby reach the purpose of decomposing or removing organic pollutant in the water.

The present invention has carried out systematic research to organic pollutant technology in the employing permanganate composite chemical removal tap water; Organic contamination in the water samples such as the source water in this handling technology of water supply flow process, filter back water, cholorination water is detected, and done to compare test; Simultaneously, the check and analysis of Ames toxicological test and conventional guidelines for drinking water quality above various water samples have been carried out.Result of study shows that this technology has very high removal efficient to organic pollutant in the water, can control the generation of chlorinated secondary products such as halogenated organic matters, and the organic contamination substrate concentration is high more in the water, pollution is serious more, and the effect of this technology is obvious more; This technology can be removed mutagenic matter and mutagenesis precursor in the water effectively, causes the active significantly reduction of mutagenesis in the chlorination process; From guidelines for drinking water quality, adopt this technology that water quality is significantly improved, and do not have any detrimentally affect.

The invention has the advantages that: compare with domestic and international other tap water depollution technology, this technology is more economical, effective, and operational administrative is easy, use and flexibly, do not need to increase big equipment and initial cost, do not increase day-to-day operation and overhead charges, be easy to traditional conventional handling technology of water supply Connection between Processes etc.

This technology is applicable to that the water source is subjected to organic contamination or is subjected to the water treatment plant that iron, manganese, heavy metal etc. pollute, and can improve effluent water quality economical, effectively.

Embodiment: at the polluted water situation of water treatment plant, permanganate composite chemical is made into finite concentration (0.1%-15%), give water treatment medicament or depollution measure coupling with routine, adding the position can be determined on a case-by-case basis, dosage can make it the good throwing amount of the amount of adjusting to by certain specific optimal controller according to the contaminated extent control in water source between 0.1～12mg/L.Conventional chemical analysis, the Ames mutagenesis toxicological test that treatment effect can be by output water, the analysis of micro quantity organic pollutant wait and investigate.

Claims (10)

1, a kind of water technology of giving is used for removing and drinks water pollutant, it is characterized in that Xiang Shuizhong adds permanganate composite chemical.

2, in accordance with the method for claim 1, it is characterized in that, as low temperature, low turbid, high luminance relay, contain algae, iron content, contain manganese, contain heavy metal and handled by the organism polluted water contaminated various surface water.

3, in accordance with the method for claim 1, it is characterized in that the underground water that is subjected to various pollutions is handled.

4, according to claim 1,2 and 3 described methods is characterized in that permanganate composite chemical is composited by in the following medicament one or more: permanganate, calcium oxide, calcium hydroxide, SODIUM PHOSPHATE, MONOBASIC (potassium), Sodium phosphate dibasic (potassium), sodium phosphate (potassium), iron(ic) chloride, magnesium chloride, calcium chloride, hydrogen peroxide, chlorine, clorox, Losantin, water glass, activated silicic acid, copper sulfate, ferrous sulfate, Potassium Persulphate, potassiumiodide, potassium perchlorate (sodium), sodium-acetate (potassium), acetate, ferrate, polyacrylamide, clay, iron trichloride, polymeric aluminum, Tai-Ace S 150.

5, according to claim 1,2,3 and 4 described methods, it is characterized in that it is before the reaction tank of handling technology of water supply that permanganate composite chemical adds the position, promptly preceding at intake or medicament mixing device (pond).

6,, it is characterized in that the permanganate composite chemical filling before the water absorption tube of source water water pump, or annotate in the water of source, or annotate in contaminated phreatic stratum, or filling is before the filtration of treatment process according to claim 1,2,3 and 4 described methods.

7, according to claim 1,2,3,4,5 and 6 described methods, the dosing method that it is characterized in that permanganate composite chemical also can add by solid form for to add with aqueous solution form.

8, according to claim 1,2,3,4,5,6 and 7 described methods, the dosage that it is characterized in that permanganate composite chemical is 0.1-12mg/L.

9, according to claim 1,2,3,4,5,6,7 and 8 described methods, the application conditions that it is characterized in that permanganate composite chemical is pH5.2-9.5.

10,, it is characterized in that adding with a kind of special controller of permanganate composite chemical makes dosage be controlled at work under the optimization state according to claim 1,2,3,4,5,6,7,8 and 9 described methods.