Bismillahir Rahmani Rahim

I'm @tanvirn From @Bangladesh🇧🇩 ![1000007775.jpg](https://cdn.steemitimages.com/DQmapM4t9xDD47SRz1ss8fjWQ6KcAeW6ENi4tWT6CWbWqtX/1000007775.jpg) Hello Dear Steemines;;;🙋‍♂️| |-|

My dear friends I hope you are well. I welcome you to my diary. Alhamdulillah I am fine. To visit the factory on STP. Let me tell you the details below.

![1000007609.jpg](https://cdn.steemitimages.com/DQmeLvFxjNDga3G8VASVQFV4UYMrKU1ZcoMF98EkP5bhicQ/1000007609.jpg)

Me and my friend left the house and in front of the airport my other friends were standing there.That's why we all go to Factory Veget together.So when everyone was at one place, after that we took one bus. We all left for the purpose of factory visit.The location of our factory is Gazipur Malek's house. So we all went and stayed in front of the factory. Then I called Ismail Bhai under whom we are coming and said that we all come here. We are now located in front of the factory.Then he called the security guard at the gate and informed that some boys under him are coming for factory visit. To take them inside the factory.Then the security guard uncle, is taking us inside the factory to Ismail Bhai.So we all together went to Ismail bhai and introduced ourselves.

![1000007622.jpg](https://cdn.steemitimages.com/DQmaszKmiGVEBJdwUTneDtXPUKV3uL2QPCDXf665J8WeKEo/1000007622.jpg) ![1000007626.jpg](https://cdn.steemitimages.com/DQmUXubcVKHYMKXF55jjh2r7LjyEWje7Xy8d5fjxaWVSHUF/1000007626.jpg) Sewage Treatment Plant (STP)| |-|

Sewage treatment (or domestic wastewater treatment, municipal wastewater treatment) is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges. Sewage contains wastewater from households and businesses and possibly pre-treated industrial wastewater. There are a high number of sewage treatment processes to choose from. These can range from decentralized systems (including on-site treatment systems) to large centralized systems involving a network of pipes and pump stations (called sewerage) which convey the sewage to a treatment plant. For cities that have a combined sewer, the sewers will also carry urban runoff (stormwater) to the sewage treatment plant. Sewage treatment often involves two main stages, called primary and secondary treatment, while advanced treatment also incorporates a tertiary treatment stage with polishing processes and nutrient removal. Secondary treatment can reduce organic matter (measured as biological oxygen demand) from sewage, using aerobic or anaerobic biological processes. A so-called quarternary treatment step (sometimes referred to as advanced treatment) can also be added for the removal of organic micropollutants, such as pharmaceuticals. This has been implemented in full-scale for example in Sweden.

![1000007624.jpg](https://cdn.steemitimages.com/DQmTLnLRLF5QqARmeUfgXjPWCMnWMkyhh4iMxfSAJFSyKsH/1000007624.jpg)

Further details about STP are given in above figure. And they are given how to work and how they work from start to finish.

>Thank you all so much for reading my post, and I tried to present you some beautiful moments of the whole day today. Please comment how you like it. Thanks again everyone, stay well.
Again,See you soon in next post. In Sha Allah| |-|