Saltwater.

Lagi 3 jam, kelas Liquid Effluent.




Buka nota minggu lepas.

Liquid effluent ialah bahan-bahan buangan dalam bentuk cecair. Dari mana2 pun dia datang - industri, kegunaan domestik, dan sebagainya, asalkan ia kehilangan kualiti sebagai air asli (read: pure water), ianya dipanggil liquid effluent.



Water made up 71% of the earth composition. 

From that amount of water, only 2.5% is fresh water, while the rest is salt water. 

And from that amount of freshwater, only 30.3% is available in form of ground water, while the rest is covered in the mountainous regions in the form of ice and snow.

Reference: nota kuliah Dr Pandhal






Subhanallah.

Dalam satu kajian, bila disenaraikan Top 10 krisis yang bakal dihadapi manusia di peringkat global, Air menduduki tempat kedua. With raising number of populations, increasing amount of pollution and higher demand for water supply, we will face a serious depletion of clean water supply - water scarcity.

Punyalah banyak air di planet bernama bumi ni, how on earth will we ever face that problem?

Rupanya hanya 2.5% air tawar.

Antara solusi kepada krisis ini ialah menggunakan teknologi desalination - penyah-asinan air. Tapi kosnya teramat tinggi, dan hampir mustahil di-mampu-miliki oleh negara-negara kelas ketiga - basically those who will face this crisis the most.

Subhanallah. The water is not readily clean as you obtain it from the pipe!

Belajar module yang ini, selalu buat insaf membazir air secara sengaja mahupun tidak.





Tutup lecture notes. Sambung tilawah kejap. Al-Waqi'ah,

"Pernahkah kamu memperhatikan air yang kamu minum?"
"Kamukah yang menurunkannya dari awan ataukah Kami yang menurunkannya?"
"Sekiranya Kami menghendaki, nescaya Kami menjadikannya masin, mengapa kamu tidak bersyukur?"
 [56:68-70]






Astaghfirullah.
It's by Your desire that you made 97.5% of the earth water salty.
It's by Your greatness that we are dyingly in need of water so much.

Terenggut.
Alangkah hadirnya Engkau.
Alangkah agungnya Engkau, di atas ilmu duniawi kami.

O Allah, let us discover more of You, as we discover more of Your knowledge.
Grant us the knowledge that is beneficial to know more of You,
Make us among the people of knowledge, and those who practise it.