A. The tests on adding chlorine to the water. B. The measures the city officials took. C. The bans the city officials made. D. Mayor Colli ns' opinion on solv ing the polluti on problem. 相关知识点: 试题来源: 解析 B 解析:主旨大意题。第四段谈道:为了解决问题,市政官员向水中加碳和...
Adding chlorine to the chilled waterPROBLEM TO BE SOLVED: To provide a slime preventing method in an open circulating cooling water system capable of suppressing the corrosion by metals and effectively suppressing the generation of slime.飯村 晶...
aBlatchley is currently studying the effects of UV radiation on pool water. Other alternatives include ozone or salt water pools. But even salt water pools contain chlorine -- the salt is used to generate chlorine in the water instead of a pool operator adding chlorine directly. While it reduc...
Once a pool has been installed, it must be maintained. Certain pool maintenance items, such as water test kits, chlorine and chemicals, are consumable and will need to be restocked upon occasion. Electric prices change, but, as of 2010, pool filters could increase an electric bill by $50 ...
3. The water treatment system and method as disclosed in claim 1, wherein said disinfectant at said fourth injection point is chlorine dioxide. 4. The water treatment system and method as disclosed in claim 1, wherein said metal salt catalyst is ferric sulfate or ferric chloride in a 50-...
A. The tests on adding chlorine to the water。 B. The measures the city officials took. C. The bans the city officials made. D. Mayor Collins’ opinion on solving the pollution problem. 相关知识点: 试题来源: 解析 B 解析:主旨大意题。第四段谈道:为了解决问题,市政官员向水中加碳和氯。...
While adding chlorine to the raw water which includesPROBLEM TO BE SOLVED: To provide a cleaning treatment method for manganese-containing water capable of certainly removing soluble manganese in raw water by a compact apparatus, having no possibility of clogging even when the turbidity of raw ...
providing a device for chlorination of water which requires no electrical energy, no valves or moving parts, reducing the need for maintenance and involves simple mixing tank, a reservoir and a cooperative dispensing unit adapted for effective and appropriate mixing of the chlorine solution in water...
Adding the chlorine-based oxidizer to the raw water which containsPROBLEM TO BE SOLVED: To provide a membrane separation method of manganese from soluble manganese-containing water which enables the removal of soluble manganese with a small consumption of a chemical.志水 浩三...
Chlorine use takes a dive in public-pool experiment ; Adding an enzyme to pool water reduces the phosphate level, requiring less chlorine and saving some money.BETH QUIMBY By BETH QUIMBY Staff Writer