1. Lý do chọn đề tài Việc thiếu nư

1. Lý do chọn đề tài
Việc thiếu nước sạch sinh hoạt nhận được nhiều sự quan tâm của mọi người trên thế giới, từ đó đã có nhiều sản phẩm lọc nước hiện đại ra đời. Để xử lý nguồn nước bị nhiễm phèn sắt, người dân đã sử dụng một số phương pháp truyền thống để lọc nước như đánh phèn chua; lọc qua cát sạn. Nhưng chất lượng nước sau khi xử lý vẫn chưa đạt tiêu chuẩn, không đảm bảo được sức khỏe khi sử dụng.

Kết quả (Anh) 1:

1. Reason for choosing the subject The lack of clean water activities that get the attention of people all over the world, from which there have been many modern water filtration products. To process infected water source iron alum, people had to use some method to filter the water such as alum; filtered through sand. But after handling water quality standards, yet are not guaranteed to be healthy when used.

Kết quả (Anh) 2:

1. Why choose topics
The lack clean water get more attention from people all over the world, from which there have been many modern water filtration products was born. To handle iron alum contaminated water, people had to use some traditional method for purifying water as rated alum; Hotel filtered through sand. But water quality after treatment has not yet reached the standard, does not guarantee health when used.

Kết quả (Anh) 3:

1. Why choose themeThe lack of clean water act to get too much attention to everyone in the world, there are a lot of products is the modern water filtration treatment of contaminated water from the birth of jarosite, people use some traditional methods to filter the water through the filter into the alum. Sand Hotel. But the quality of water after treatment is still not qualified, can not ensure the health use.