Mr. Xia was doubtful of the laboratory technician's explanation. He walked around the laboratory twice and suddenly asked, "Do you have any remaining wastewater samples for testing?"
"Each batch of samples will be disposed of after testing. If you need it, we can take samples now." Several laboratory technicians naturally respect the chief engineer of the entire factory.
"How long will it take for sampling and testing operations?"
"It takes about forty minutes including taking samples and testing."
"Okay, take a sample of the treated wastewater for testing and let me take a look."
Lao Xia and her assistant were waiting in the laboratory. Ten minutes later, a laboratory technician came back with the samples. Seeing that Lao Xia was eager to know the results, she immediately started testing. After some operations, twenty minutes later, the laboratory technician A report sheet was handed to Lao Xia, "Mr. Xia, these are the test results of the samples taken just now. Take a look."
After receiving the test report, Lao Xia repeatedly checked the above data. Judging from the test results of this sample, all indicators in the wastewater did meet the discharge standards.
Lao Xia returned the report sheet to the laboratory technician, "Do you have a record of all the laboratory results since the beginning of the experiment? Show it to me."
Facing Mr. Xia, the laboratory technician did not dare to show any slightest indifference, "Yes, yes, every test result is saved, and it's all here." As he said that, the laboratory technician handed a stack of report sheets to the manager. summer.
After reading it from beginning to end, through comparison, Lao Xia found that the data on each report sheet only had slight differences after the decimal point, indicating that the results were quite stable.
Walking to the test bench, Lao Xia picked up the sampling bottle and looked at the wastewater sample again and again. He even went to the mouth of the bottle and smelled it. Maybe he didn't smell any unpleasant smell. He even looked at the mouth of the bottle. Take two deep breaths.
"Mr. Xia, are you checking the smell of wastewater samples?" The assistant came over.
"Come and smell it." Lao Xia handed the bottle to the assistant.
Taking the sample bottle, the assistant carefully smelled the mouth of the bottle and found no unpleasant smell. He took two more deep breaths and placed the bottle on the experimental table. "I didn't smell anything."
Lao Xia nodded, "Yes, I didn't find any smell. Combined with these test results, it shows that steam distillation is effective in treating iron powder reduction wastewater. However, this is only the first step. Although the organic matter in the wastewater is removed , the unpleasant smell has been eliminated, but the color of the wastewater has not been treated and it still cannot be discharged directly.”
On the way back to the general engineer's office, the assistant couldn't help but ask a question, "Mr. Xia, do we still need to do small experiments in the laboratory?"
"The plan has been put forward, and the equipment, equipment and reagent materials have been purchased. Small experiments in the laboratory must be done, but we must seize the time and work, and we can no longer procrastinate like before."
In fact, these are all excuses. The reason why Lao Xia continued to do small experiments in the laboratory was mainly to save his own face, because at that time he could not trust Fang Hanmin, so he proposed the idea of using small experiments to verify it in the laboratory. Now Fang Hanmin has taken the lead in He had achieved success with the industrial equipment in the workshop. Even if he went through the process to show off, Lao Xia still had to complete the procedure.
The dignified chief engineer of Hongxing Pharmaceutical Factory was slapped in the face by a young temporary worker. Lao Xia's face was really not good-looking. Even though he knew that Fang Hanmin's steam distillation test had been successful, the top factory director Yuan did not talk to Lao Xia about it. After all, Fang Hanmin's test was only the first step, and the color of the wastewater had not been removed, so it still could not be directly emission.
Lao Yuan believes that when Fang Hanmin has gone through the entire process of wastewater treatment, removed the color of the wastewater, and the treated wastewater can be discharged directly, it will not be too late to inform Lao Xia. ...
Lao Yang, the workshop director, knew immediately that the steam distillation test was successful, but the settlement tank construction project he was responsible for had not yet been completed. "Isn't this holding back Fang Hanmin?" Lao Yang was worried about this.
This morning, Fang Hanmin took time to go to the settlement tank construction site to check the progress of the project. When Lao Yang saw him, he felt very sorry, "It will take three to five days for the settlement tank to be put into use. It will delay your test!"
"Director, your speed is fast enough. The civil construction project cannot be rushed. It will not work without any process. Let alone three or five days, it doesn't matter even if we wait ten or eight days."
Fang Hanmin said this entirely to reassure Lao Yang. On the one hand, he knew that civil construction projects do take time. Even if Lao Yang has done his best on this matter, it takes more than ten days to build three thousands of cubic meters. The sedimentation tank is also a difficult thing to do. In addition, since the process improvement test of the "acylation" position, workshop director Lao Yang has given Fang Hanmin a lot of understanding and help. Now that the situation has reversed, how can he not understand Lao Yang?
Fang Hanmin is very clear that the key to the success of the wastewater treatment process lies in the success of steam distillation. As for the subsequent graded sedimentation, as long as there is enough time, there is no problem.
Now that steam distillation has been successful, it shows that this wastewater treatment plan is completely feasible. Fang Hanmin believes that the subsequent staged sedimentation can be completed a few days earlier and a few days later, so there is no need to worry about it at all.
In order to obtain better decolorization results, Fang Hanmin suggested installing an electromagnetic adsorption device at the outlet of the final sedimentation tank to achieve better treatment results.
"Although adding this set of equipment won't cost much, I'm afraid the construction period will be delayed by a few more days. Wouldn't this delay even more time?" The settlement tank was not completed in time. Lao Yang already felt that his work was not done well. If he postponed it again, He felt that he could not explain to the factory leaders and Fang Hanmin.
"Director, you don't have to think so much. The delay in the construction schedule is entirely my business and has nothing to do with you. What I care about is how to achieve the best effect of the wastewater treatment process."
In accordance with Fang Hanmin's request, Lao Yang discussed with the project contractor and installed an electromagnetic adsorption device at the outlet of the last-stage sedimentation tank. The entire project was delivered for use seven days later.
Fang Hanmin personally directed the joint test run. In the first step, the wastewater generated from the iron powder reduction section of the second workshop was fully recovered through steam distillation to fully recover the organic matter and eliminate the odor in the wastewater. The wastewater from the first step entered The sedimentation tank carries out the second step of treatment. After three-stage sedimentation and electromagnetic adsorption, the water quality type of the wastewater discharged from the last-stage sedimentation tank determines the success or failure of the wastewater treatment process.
It takes fifty hours from the first step to the time when the wastewater leaves the outlet of the last-stage sedimentation tank, two-thirds of which is consumed in the second step of treatment, which is the third-stage sedimentation stage.
At around 11 noon on the third day, Fang Hanmin asked workers to take samples from the outlet of the last-level sedimentation tank for testing. Only when the indicators of the samples met the national water quality standards could the gate be opened and discharged.
The samples were sent to the laboratory, and the technicians worked nervously. They not only tested the content of various organic compounds in the samples, but also tested the water hardness and color.
By the time the laboratory technician sent several test reports to Fang Hanmin, it was already past two o'clock in the afternoon. Fang Hanmin is not concerned about the test results of organic components, because the results of the first step have already reassured him. Now he only cares about the hardness and color of the water. Only if these two indicators are qualified can the success of the entire process be proven.
After analyzing the relevant indicators of the test report and comparing it with relevant national standards, it was found that the water quality at the outlet of the third-level sedimentation tank was lower than the national Class IV water quality standard, but higher than the Class V water quality standard.
This is a pretty good result! According to relevant national regulations, Category 5 water quality is suitable for agricultural and general landscape water use. The wastewater treated by this process is better than Category 5 water quality standards, but slightly lower than Category 4 water quality, fully meeting the discharge requirements.
Because it involves wastewater discharge, Fang Hanmin must report the results to the superiors in a timely manner so that relevant departments in the factory can contact the local government.
In the afternoon of the same day, the two leaders of the second workshop reported Fang Hanmin's test results to Director Yuan. Lao Yuan slapped his thigh and said, "It's good this time! As long as the sewage is effectively treated, the paracetamol API in your second workshop can be produced at full capacity again." , this is of great significance to the entire Hongxing Pharmaceutical Factory! The development of Hongxing Pharmaceutical Factory depends entirely on this product."
"But, what to do next?"
"Do you need to say more? Of course we will resume full production!"
"Director Yuan, only half of the equipment in the second workshop is in operation now, and the employees only work for half a month. There is only one set of equipment for the wastewater treatment test. If the workshop resumes full production, the existing test equipment will definitely not be able to meet the sewage treatment requirements. , what we mean is, should we consider expanding sewage treatment capacity?" Lao Yang explained.
"Oh, you mean to ask the factory to invest in expanding its sewage treatment capacity? This is easy to handle. As long as it is conducive to the production and development of Hongxing Pharmaceutical Factory, the factory will certainly invest, but I want to discuss this matter with the team members and strive for I have everyone’s support.”
The next morning, Lao Yuan took time to go to the second workshop to understand the operation of the wastewater treatment test device on the spot. Fang Hanmin accompanied him throughout the process and introduced the process flow and the process principles of each step to Lao Yuan in detail.
Finally coming to the third-level sedimentation tank, Director Yuan pointed to the clear water at the drainage outlet and asked: "After this process, the quality of the wastewater flowing out from here has reached the fourth to fifth category water quality standards stipulated by the country. ?”
"Yes, this water quality not only fully meets agricultural irrigation standards, but can also be used as urban landscape water. So, to be precise, the water discharged from here should not be called wastewater." Fang Hanmin corrected the factory director's statement.
In the afternoon of the same day, Lao Yuan convened a meeting with the entire factory leadership team to inform everyone of the wastewater treatment test results of the second workshop and discuss the investment and construction of sewage treatment projects.
Before the meeting officially started, Lao Yuan remembered the laboratory verification of the wastewater treatment plan, and asked the chief engineer Lao Xia about the situation. At this time, the laboratory work had only been carried out for a few days, and no test results had been produced yet. But Lao Xia also went to the site to understand the operation of Fang Hanmin's experimental device. Even though he didn't gain anything in the laboratory, he still spoke clearly about the process of steam distillation.
"In general, steam distillation is effective in eliminating the smell of wastewater, but the subsequent sedimentation effect remains to be seen, because the sedimentation effect also affects water quality." Perhaps Lao Xia has been immersed in laboratory work in recent days, and Lao Xia followed His assistant still does not know Fang Hanmin's final test results.
Factory Director Yuan smiled and said, "No need to observe. After the meeting, you can go to the test site of the second workshop to have a look." Then, he informed the participants in detail about the test situation and final results he learned.
Previously, other members of the team only knew sporadic information. After Lao Yuan's report, they truly realized that the temporary worker in the second workshop had really succeeded in this big thing!
